- Thursday * *J March 23, 1995

- _

Part IDepartment of

Energy

, _-

Office of Energy Efficiency and

Renewable Energy

Ovens; and Clothes Washers; and

WE ~Dishwashers; Proposed Rule

_ 1

=Department of - Energy

5n .- Office of Energy Efficiency and

w - Renewable Energy

10 CFR Part 430

,r, Y' Test Procedures for Water Heaters;

c - : Kitchen Ranges, Ovens, and Microwave .- ~ ' '= Ovens; and Clothes Washers; and

_____ -- Reporting Requirements for Clothes

Washers, Clothes Dryers and . I Dishwashers; Proposed Rule

15329

EE-RM-94-230 COMMENT 49L

Thursday 

March 23, 1995 

Part 'II 

Department of 

Energy 

Office of Energy Efficiency and 

Renewable Energy 

10 CFR Part 430 

Test Procedures for Water Heaters; 

Kitchen Ranges, Ovens" and Microwave 

Ovens; and Clothes Washers; and 

Reporting Requirements for Clothes 

Washers, Clothes Dryers and 

Dishwashers; Proposed Rule 

L 

15329 
15330 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

DEPARTMENT OF ENERGY Dockets, Test Procedures for Water FOR FURTHER INFORMATION CONTACT:

Heaters; Kitchen Ranges, Ovens, and

Office of Energy Efficiency and HMicrowave Microwave Ovens; and Clothes William W Hui-Water Heaters (202) Ovens; and Clothes 586-914 5 l t a

Renewable EnergyWashers; and Reporting Requirements Ingrid M. WatsonRanges, Ovens and

10quiCremert 4n -for Clothes Washers, Clothes Dryers, Microwaves (202) 5868119

10 CR Part 430and Dishwashers," Docket No. EE-RM- Marc LaFrance-Clothes Washers and

(Docket No. EE-RFM4-230] 94-230, Forrestal Building, 1000 Der, an ishwashe (202)

Independence Avenue, SW., 843

Energy Conservation Program for Washington, DC 20585. UH. De Department mentofEner Ener of Energy, Energy Consumer Products: Test Procedures The hearing will be held at the U.S. Efficiency and Renewable

for WaterHeter; Kitchen Ranges, Department of Energy, Forrestal EnergyMal Station EE-431 Forrestal

Ovens, and Microwave Ovens; and Building, Room E-245, 1000Building, 1000 Independence Avenue

Clothes Washers; and Reporting Independence Avenue, SW., SW., Washington, DC. 20585

Requirement for Clothes Wahers, Washington, DC.Eugene Margol Esq., U.S. Department Clothes Dryers, and Dishwashers Requests may be hand delivered of Energy, Office of General Counsel,

AGENCY: Office of Energy Efficiency and between the hours of 8 a.m. and 4 p.m., Mail Station GC-72, Forrestal

Renewable Energy, Department of Monday through Friday, except Federal Building, 1000 Independence Avenue,

Energy . holidays. Requests should be labeled, SW., Washington, D.C. 20585, (202)

ACTiON: ACTION: Proposed Propose d Rule Rule and Publicar t Procedures for and Water Heaters; Public 586-9507. e"Test 

w Hearing. Kitchen Ranges, Ovens, and Microwave SUPPLEMENTARY INFORMATION: Hearming.owave; _Ovens; and Clothes Washers; and

SUMMARY: The Energy Policy and Reporting Requirements for Clothes 1. Introduction

Conservation Act, as amended, requires Washers, Clothes Dryers, and

the Department of Energy (DOE or the Dishwashers," (Docket No. EE-RM-94- Auhoty

Department) to administer an energy 230), both on the document and on the Part B of Title III of the Energy Policy

conservation program for certain major envelope. and Conservation Act, Pub. L. 94-163,

household appliances and commercial Copies of the transcript of the public as amended by the National Energy

equipment. Among other program hearing and public comments received Conservation Policy Act, Pub. L. 95-

elements, the Act requires that standard may be read and/or photocopied at the 619, the National Appliance Energy

methods of testing be prescribed for Department of Energy Freedom of Conservation Act of 1987, Pub. L. 100-

each covered product. Thepurposes Information Reading Room .S. 12, the National Appliance Energy

this Proposed Rulemaking are to:Department of Energy Forrestal Conservation Amendments'of 1988,

propose amendments to clarify.the Building, Room 1E-190, 1000 Pub. L. 100-357, and the Energy Policy

water heater; kitchen range, oven, and Independence Avenue, SW., Act of 1992, Pub. L. 102-486, created

microwave; and clothes washer test Washington, DC 20585, (202) 586-6020 the Energy Conservation Program for

procedures, announce the Department's between the hours of 9 a.m. and 4 p.m., Consumer Products other than

intentions to incorporate by reference Monday through Friday, except Federal Automobiles (Program). The products

test procedures adopted by the holidays. currently subject to this Program (often

International Electrotechnical The Department will incorporate by eferred to hereafter as "covered

Commission (IEC), and request data, reference test standards from theproducts") include water heaters;

comments, and information regarding nternational Electrotechnical kitchen ranges, ovens, and microwaves;

their applicability and workability. Commission upon publication of this and clothes washers, the subjects of

Today's amendments of the test rule as final These standards are listed today's notice.

procedures are not expected to alter the below: Under the Act, the Program consists

minimum energy conservation essentioally of three parts: Testing, International Electrotechnical Commissi labeling, and the Federal energy standards currently in effect, or those Publication 705, and Amendment 2-1993energy

being proposed in the Eight Products conservation standards. The

Notice of Proposed Rulemaking, . Microwave Ovens for Householdand SimilarDepartment, n consultationwith the

published March 4, 1994 (59 FR 10464). Purposes," Section 4, Paragraph 12 National Institute of Standards and

DATES: Written comments in response to "Microwave Power Output Measurement," Technology (formerly the National

this notice must be received by August Paragraph 13 "Electrical Power Output Bureau of Standards), is required to

Je31, 1995. Tn( sofCMeasurement," and Paragraph 14 amend or establish new test procedures

Oral views, data, and a rguments may "ffidency. as appropriate for each of the covered

be presented at the public hearing to be Copies of these standards may be productsEPCA section323.The

held in Washington, DC, beginning at viewed at the Department of Energy purpose of the test procedures is to

9:30 a.m. on July 12, 1995. Requests to Freedom of Information Reading Room produce test results which measure

speak at the hearing must be received by at the address stated above. Copies of energy efficiency,'energy use, water use

the Department no later than 4 p.m., the International Electrotechnical (in the case of showerheads, faucets,

June 28, 1995. Ten (10) copies of Commission Publication can be water closets and urinals), or estimated

statements to be given at the public obtained from the American National annual operating cost of a covered

hearing must be received by the Standards Institute, 11 West 42ndproduct during a representative average

Department no later than 4 p.m., July 5, Street, New York, New York 10036, use cycle or period of use, and must not

1995. (212) 642-4936. be unduly burdensome to conduct.

ADDRESSES: Written comments, and For more information concerning EPCA, section 323(b)(3). A test

requests to speak at the public hearing public participation in this rulemaking

are to be submitted to: U.S. Department proceeding, see Section XI, "Public Co of Title mofT Energy Policyand .f Energy, .ffie CofEnsergy Efficiency Comeivation Act, as amended, Is referred to in this

of Energy, Office of Energy Efficiency Comment Procedures," of the final rule as "EPCA" or the "Act." Par B of Title

and Renewable Energy, Hearings and SUPPLEMENTARY INFORMATION section. m is codified at 42 U.S.C. 6291-6309.

EE-RM-94-230 COMMENT 49L

15330 Federal Register I Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 

DEPARnlENT OF ENERGY Dockets, Test Procedures for Water 

Heaters; Kitchen Ranges, Ovens, and 

Office of Energy Efficiency and Microwave.Ovens; and Clothes 

Ren...,1e Energy· . Washers; and Reporting Requirements 

10 CFR Pan 430 . for Clothes Washers, Clothes Dryers, and Dishwashers," Docket No. EE-RM;'" 

[Dock" No. EE-.... 4-230] , 94-230, Forrestal Building, .1000 

Independence Avenue, SW., 

Energy Conservation Program for Washington, DC 20585. . . 

Consumer Products: Teat Procedures The hearing will b~ held at the U.S. 

for Water.Heaters; Kitchen Ranges, . Department of ErierllY, Forrestal 

Ovens, and Microwave Ovens; and Building, Room lE-245, 1000 

Clothes Washera; and Reporting . 'Independence Avenue, SW., . 

Requirements for Clothes Washers, Washington, DC. ' 

Clothes Dryers, and Dishwashers . Requests may.be hand delivered ' 

AGENCY: Office of Energy Efficiency and between the hours of 8 a.m. and 4 p.m., 

Renewable Energy, Department of Monday through Friday, except Federal 

Energy. holidays. Requests should be labeled, 

ACTION: Proposed Rule and Public "Test Procedures for Water Heaters; 

H . Kitchen Ranges, Ovens, and Microwave , eanng. Ovens; and Clothes.Washers; and 

SUIlllARY: The Energy Policy and Reporting Requirements for Clothes 

Conservation Act, as amended, requires Washers, Clothes Dryers; and 

the Department of Energy (DOE or the Dishwashers," (Docket No. EE-RM-94-

Department) to administer anenerllY 230), both on the document and on the 

conselVation program for certain major envelope. , ' 

household appliances and commercial Copies of the transcript of the public 

equipment. Among other program hearing and public comments received 

'elements, the Act requires thatstandard may be read and/or photocopied at the 

methods o~ testing be prescribed for Department of EnerllY Freedom of 

each covered product. The purposes of . Information Reading Room,'tJ.S. 

this Proposed Rulemaking are to: Department of EnerllY, Forrestal 

propose am~ndments to clarify-the Building, Room lE-190, 1000 

water heater; kitchen range, oven, arid Independence Avenue,SW., 

microwave; and clothes WaSher test Washington, DC 20585, (202) 586-6020 

procedures, announce the Department's between the hours of 9 a.m. and 4, p.m.; 

. intentions to incorporat~ by reference ,Monday through Friday, except Federal 

test procedures adopted by the . holidays. ' 

International Electrotechnical ' The Department will incorporate by, 

Commission, (lEC), and request data, reference test standards from the 

comments, and information regarding InternationalElectrotechnical' 

their applicability and workability. Commission upon publication of thi~ 

Today's amendments ofthe test rule as final. These standards are listed 

procedures are not expected to alter the below: 

minimum energy conservation International Electrotechnical Commission 

standards currently in effect, or those PubUcation 705, and Amendment 2-1993. 

being proposed in the Eight Products "Methods for Measuring the Performance of 

Notice of Proposed ~ulemaking; :Microwave Ovens for Household and Stmtlar 

published March 4, 1994 (59 FR 10464). Purposes:' Section~. Paragraph 12 

DATES: Written comments in response to "Microwave Power Output Measurement:' 

this notice must be received by August Paragraph 13 "Electrical Power Output 31, 1995. Measurement," and Paragraph 14 

"EfTidency ... Oral views, data, and arguments may 

be presented at the publ~c hearing to be Copies of these standards may be 

held in Washington, DC. beginning at viewed at the Department of EnerllY 

9:30 a.m. on July 12. 1995. Requests to Freedom oflruormation Reading Room 

speak at the hearing must be received by at the address stated above. Copies of 

the Department no later than 4 p.m., the International Electrotechnical 

June 28. 1995. Ten (10) copies of Commission Publication can be 

statements to be given at the public obtained from the American National 

,hearing must be received by the Standards Institute, 11 West 42nd ' 

Department no later than 4 p.m .• July 5. Street, New York, New York 10036, 

1995. " (212) 642-4936. ' 

/ ADDRESSES: Written comments, and For more information concerning 

, requests to speak at the public hearing public partiCipation in this rulel1laking 

are to be, submitted to: U.S. Department proceeding. see Section Xl, "Public 

of Energy, Office of Energy Efficiency Comment Procedures." of the 

and Renewable Energy, Hearings Clnd SUPPLEMENTARY INFORMATION section. ' 

FOR FURTHER IN~TlON CONTACT: 

WiIliam W. Hui-Water Heaters (202) 

586-9145 , Ingrid M. Watson-Ranges, Ovens and 

Microwaves (202) 586-8119 ' 

Marc LaFrance-Clothes Washers and 

Dryers, and Dishwashers (202) 586-

8423 

U.s. Department of Energy, Energy 

Efficiency and Renewable 

EnefJlY,Mail Station EE-431.Forrestal 

Building, 1000 Independence Avenue, 

SW .• Washington, DC. 20585 , Eugene Margolis, Esq .. U.S. Department 

of EnefJlY, Office of General Counsel, 

Mail Station GC;;'72. Forrestal 

Building. 1000 Independence Avenue: 

SW" Washington, D.C. 20585, (202) . 586-9507. ' 

SUPPLEMENTARY ,INFORMATION: 

I.' Introduction 

A. Authority 

Part B Of Title III of the Energy Policy 

and Conservation Act, Pub.' L, 94-163, 

as amended by the National Energy 

Conservation Policy Act. Pub. L. 95-

619, the National Appliance Energy 

Conservation Act of 1987. Pub.L.l00-

12. the National Appliance Energy , 

ConselVation Ainendments'of 1988. 

Pub. L. 100-357, and the Energy Policy 

,Act of 1992, Pub. L. 102-486. created 

the EnerllY ConselVation Program for 

Consumer Products other thim ' 

Automobiles (Program).l The products 

currently subject to this Program (often 

referred.to hereafter as "covered' 

products") include water heaters; 

kitchen ranges, ovens, and microwaves; 

and clothes washers, the subjects of 

today's notice. 

Under the Act"the'Program consists 

essentially of three parts: Testing, 

labeling, and the Federal energy 

conseavation standards. The 

Department, in consuitation with the 

National Institute of Standards and 

Technology (formerly the National 

Bureau of Standards), is required to 

amend or establish new test procedures 

as appropriate for each of the covered 

products~ EPCA. section'323. The 

purpose of the test procedureS 'is to 

produce test results which measure 

'energy efficiency. 'energy use,' water use 

(in the case of showerheads, faucets, 

water closets and urinals). or estimated' 

, annual operating cost of a covered 

product during a representative average 

use cycle or period of use, and must not ' 

be unduly burdensome to conduct. 

EPCA; section 323(b)(3). A test 

1 Part B of Title m of Energy Polley and ' 

Conservation Act, as amended. 15 referred to In this 

ftnal rule as "EPCA" or the "Act." Pan B of Title 

m Is codifled at 42 U .s.C. 6291~09. 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15331

procedure is not required if DOE (2) Kitchen ranges, ovens; and * Extend testing and performance

determines by rule that one cannot be microwaves. coverage to water-heating clothes

developed. EPCA, section 323(d)(1). (a) Revision of subpart B, section washers.

One hundred and eighty days after a test 430.22 to include test procedure * Extend coverage for clothes washers

procedure for a product is adopted, no changes. that have infinite/variable temperature

manufacturer may make representations (b) Revision of subpart B, appendix I. selection capability.

with respect to energy use, energy 1. Revise the annual useful energy 3. Addition of optional water

efficiency or water use of such product, output to reflect changes in the annual consumption and extraction procedures

or the cost of energy consumed by such usage of ranges, ovens, cooktops, and which include the following:

product, except as reflected in tests microwave ovens. * Add new definitions for the

conducted according to the DOE 2. Add definition for "IEC 705." following terms: modified energy factor,

procedure. EPCA, section 323(c) (2). Test 3. Eliminate the requirement to use a moisture removal energy and water

procedures appear at 10 CFR part 430, standard continuous flow calorimeter. consumption factor.

subpart B. 4. Incorporate by reference the · Add optional test procedures to

However, the 180-day period referred International Electrotechnical determine the above values.

to in section 323(c) (2) may be extended Commission Publication 705 (4) Addition to subpart F, § 430.62, to

for a period of up to an additional 180 Amendment 2-1993, section 4, add reporting requirements for energy

days if the Secretary determines that the Paragraphs 12-14. factors for clothes washers, clothes

requirements of section 323(c)(2) would 5. Include the clock energy in the dryers, and dishwashers.

impose undue burden. EPCA, section calculation of annual energy In addition, metric units of

323(c)(3). consumption for microwave ovens. measurements have been included in

Section 323(e) of the Act requires 6. Revise section 2.8 "Test Beakers" the three test procedures (English values

DOE to determine to what extent, if any, replace with new section 2.8 are given followed by their appropriate

a proposed test procedure would alter "Microwave Oven Test Load." International System of Units in

the measured energy efficiency, 7. Revise section 2.9.3.4 "Microwave parentheses).

measured energy use or measured water Oven and Test Load Temperature,"

use of any covered product as replace with new section 2.9.3.4 "Test II. Discussion

determined under the existing test Load Temperature." A. Water Heater Test Procedure

procedure. If DOE determines that an 8. Eliminate section 4.3

amended test procedure would alter the "Conventional Range," and section 4.5 Today's propsed amendments to the

measured efficiency or measured use of "Microwave/Conventional Range." water heatertest procedure include: Revisions to make the water heater test

a covered product, DOE is required to These two sections have been replaced Revisions to make the water heater test

amend the applicable energy with a new section 4.3 "Combined procedure applicable to electric and oilconservation standard accordingly. In Components" in this proposed rule. irensataes wate e

determining the amended energy (3) Clothes washers. coverage for testing storage-type water

conservation standard, DOE is required (a) Revision of subpart B, § 430.22 to heaters with rated storage capacities less

to measure the energy efficiency or include test procedure changes and to than 20 gallons (76 liters): revision of

energy use of a representative sample of revise the number of representative the first hour rating for storage-type

covered products that minimally average-use cycles per year. water heaters; amendment to the extant

comply with the existing standard. The (b) Revision of subpart B, appendix J. definition for heat pump water heater;

average efficiency of these 1. General test procedure clarification and addition of new definitions for heat

representative samples, tested using the which includes the following: pump water heater storage tank, add-on

ended estpredue s es th * Add new definitions for the heat pump water heater, integral heat

amended standard. EPCA, section following terms: thermostatically pump water heater, and solar water

323(e) (2). controlled valves, agitator, top-loader- heater.

vertical-axis clothes washer, and top- The Department does not believe any

B. Background loader-horizontal-axis clothes washer. of these changes would alter the energy

Today's notice proposes to modify the * Delete the requirement to conservation standards for water heaters

test procedures for water heaters; disconnect all lighting systems which currently in place, and requests

kitchen ranges, ovens, and microwave consume more than 10 watts during the comments on the impact of these

ovens; and clothes washers as follows: clothes washer test cycle. changes, if any. In addition, DOE

(1) Water heaters. * Introduce a new section, section requests comments on the adequateness

(a) Revision of subpart B, appendix E. 2.11 "Agitation and Spin Speed of the test procedure for heat pump

1. Modify the test procedures to Settings." water heaters regarding the use of

address electric and oil-fired a Delete reference to AHAM and backup electric resistance element(s). To

instantaneous water heaters. AHAM procedures. the Department's knowledge, most heat

2. Include testing of storage-type * Clarify the procedure for capacity pump water heaters are capable of

water heaters having rated storage testing. meeting the current test draw

capacities less than 20 gallons (76 * Clarify the requirements for requirements, and therefore, the backup

liters). "maximum fill" testing. electric resistance element(s) are often

3. Revise the method used to calculate 2. Incorporation of test procedure unnecessary, and are seldom activated.

the first hour rating of storage-type changes from approved Waivers to However, the current test setup and

water heaters. address the following issues: parameters may not represent operating

4. Amend the extant definition for * Add new definitions for the conditions requiring backup electric

heat pump water heater, and add new following terms: nonwater-heating resistance elements to activate. This is

definitions for heat pump water heater clothes washers and water-heating dependent on a number of factors, i.e.,

storage tank, add-on heat pump water clothes washers. temperature settings, draw volume and

heater, integral heat pump water heater, * Extend coverage for washers that rate, etc. Therefore, DOE is interested in

and solar water heater. operate at 120/208Y and 120/240 volts. receiving comments on the test

EE-RM-94-230 COMMENT 49L

Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15331 

procedure is not required if DOE 

determines by rule that one cannot be 

developed. EPCA, section 323(d)(l). 

One hundred and eighty days aftera test 

procedure for a product is adopted, no 

manufacturer may make representations 

with respect to energy use, energy 

efficiency or water use of such product, 

or the cost of energy consumed by such 

product, except as reflected in tests 

conducted according to the DOE 

procedure. EPCA, section 323(c) (2). Test 

procedures appear at 10 CFR part 430, 

subpart B. 

However, the 180-day period referred 

to in section 323(c) (2) may be extended 

for a period of up to an additional 180 

days if the Secretary determines that the 

requirements of section 323(c) (2) would 

impose undue burden. EPCA, section 

323 (c)(3). 

Section 323(e). of the Act requires 

DOE to determine to what extent, if any, 

a proposed test procedure would alter 

the measured energy efficiency! 

measured energy use or measured water 

use of any covered product as 

determined under the existing test 

procedure. If DOE determines that an 

amended test procedure would alter the 

measured efficiency or measured use of 

a covered product, DOE is required to 

amend the applicable energy 

conservation standard accordingly. In 

determining the amended energy 

conservation standard, DOE is required 

to measure the energy efficiency or 

energy use of a representative sample of 

covered products that minimally 

comply with the eXisting standard. The 

average efficiency of these 

representative samples, tested using the 

amended test procedure, constitutes the 

amended standard. EPCA, section 

323 (e)(2). 

B. Background 

Today's notice propo~es to modify the 

test procedures for water heaters; 

kitchen ranges. ovens. and microwave 

ovens; and clothes washers as follows: 

(1) Water heaters. . (a) Revision of subpart B. appendix E. 

1. Modify the test procedures to 

address electric and oil-fired 

instantaneous water heaters. 

2. Include testing of storage-type 

water heaters having rated storage 

capacities less than 20 gallons (76 

liters). 

3. Revise the method used to calculate 

the first hour rating of storage-type 

water heaters. 

4. Amend the extant definition for 

heat pump water heater. and add new 

definitions for heat pump water heater 

storage tank. add-on heat pump water 

heater. integral heat pump water heater. 

and solar water heater. 

(2) Kitchen ranges. ovens; and 

microwaves. . 

(a) Revision of subpart B. section 

430.22 to include test procedure 

changes. 

(b) Revision of subpart B. appendix I. 

1. Revise the annual useful energy 

output to reflect changes in the annual 

usage of ranges. ovens. cooktops. and 

microwave ovens. 

2. Add definition for "IEC 705." 

3. Eliminate the requirement to use a 

standard continuous flow calorimeter. 

4. Incorporate by reference the 

International Electrotechnical 

Commission Publication 705 

Amendment 2-1993. section 4. 

Paragraphs 12-14. 

5. Include the clock energy in the 

calculation of annual energy 

consumption for microwave ovens. 

6. Revise section 2.8 "Test Beakers" 

replace with new section 2.8 

"Microwave Oven Test Load." 

7. Revise section 2~9.3.4 "Microwave 

Oven and Test Load Temperature." 

replace with new section 2.9.3.4 "Test 

Load Temperature." 

8. Eliminate section 4.3 

"Conventional Range." and section 4.5 

"Microwave/Conventional Range." 

These two sections have been replaced 

with a new section 4.3 "Combined 

Components" in this proposed rule. 

(3) Clothes washers. 

(a) Revision of subpart B. § 430.22 to 

include test procedure changes and to 

revise the number of representative 

average-use cycles per year. 

(b) Revision of subpart B. appendix J. 

1. General test procedure clarification 

which includes the following: 

• Add new definitions for the 

following terms: thermostatically 

controlled valves. agitator. top-loadervertical-axis clothes washer. and toploader-horizontal-axis clothes washer. 

• Delete the requirement to 

disconnect all lighting systems which 

consume more than 10 watts during the 

clothes washer test cycle. 

• Introduce a new section. section 

2.11 "Agitation and Spin Speed 

Settings." . 

• Delete reference to AHAM and 

AHAM procedures. 

• Clarify the procedure for capacity 

testing. 

• Clarify the requirements for 

"maximum fill" testing. 

2. Incorporation of test procedure 

changes from approved Waivers to 

address the following issues: 

• Add new definitions for the 

following terms: nonwater-heating 

clothes washers and water-heating 

clothes washers. 

• Extend coverage for washers that 

operate at 120/208Y and 120/240 volts. 

• Extend testing and performance 

coverage to water-heating clothes 

washers. 

• Extend coverage for clothes washers 

that have infinite/variable temperature 

selection capabiUty. 

3. Addition of optional water 

consumption and extraction procedures 

which include the following: 

• Add new definitions for the 

following terms: modified energy factor. 

moisture removal energy and water 

consumption factor. 

• Add optional test procedures to 

determine the above values. 

(4) Addition to subpart F. § 430.62. to 

add reporting requirements for energy 

factors for clothes washers. clothes 

dryers. and dishwashers. 

In addition. metric units of 

measurements have been included in 

the three test procedures· (English values 

are given followed by their appropriate 

International System of Units in 

parentheses) . 

II. Discussion 

A. Water Heater Test Proc~ure 

Today's proposed amendments to the 

water heatertest procedure include: 

Revisions to make the water heater test 

procedure applicable to electric and oilfired instantaneous water heaters; 

coverage for testing storage-type water 

heaters with rated storage capacities less 

than 20 gallons (76 liters); revision of 

the first hour rating for storage-type 

water heaters; amendment to the extant 

definition for heat pump water heater; 

and addition of new definitions for heat 

pump water heater storage tank. add-on 

heat pump water heater. integral heat 

pump water heater. and solar water 

heater. 

The Department does not believe any 

of these changes would alter the energy 

conservation standards for water heaters 

currently in place. and requests 

comments on the impact of these 

changes. if any. In addition. DOE 

requests comments on the adequateness 

of the test procedure for heat pump 

water heaters regarding the use of 

backup electric resistance element(s). To 

the Department's knowledge. most heat 

pump water heaters are capable of 

meeting the current test draw 

requirements. and therefore. the backup 

electric resistance element(s) are often 

unnecessary. and are seldom activated. 

However. the current test setup and 

parameters may not represent operating 

conditions requiring backup electric 

resistance elements to activate. This is 

dependent on a number of factors. i.e.. 

temperature settings. draw volume and 

rate. etc. Therefore. DOE is· interested in 

receiving comments on the test 
15332 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

procedure for heat pump water heaters having rated storage capacities less than a result, the Department has been

regarding the use of backup electric 20 gallons (76 liters), the Department conducting a continuous effort to

resistance element(s). proposes to include the applicable draw improve the first hour rating method in

Concurrently, the Department is schedule accepted by the water heater rulemakings for water heaters. However,

conducting a rulemaking, independent industry. (See American National the concept of what the first hour rating

of today's notice, to propose revised Standards Institute/American Society of should represent (i.e., a balance between

minimum energy conservation Heating, Refrigerating and Air- storage capacity, recovery rate, and

standards for eight consumer products, Conditioning Engineers (ASHRAE) mixing characteristics) and how to

including water heaters. (59 FR 10464, Standard 118.2-1993: Method of Testing measure it accurately has proven to be

March 4, 1994). for Rated Residential Water Heaters.) a difficult task. Each attempt at

1. Electric and Oil-Fired Instantaneous The total volume withdrawn shall be 24 establishing a first hour rating test has

Water Heaters gallons (91 liters) for units having rated led to difficulties (repeatability problemstorage capacities greater than or equal with the 1989 proposal (54 FR 1890, The current test procedure does not to 10 gallons (38 liters), but less than 20 January 17, 1989), and a low estimate of

address testing of electric and oil-fired gallons (76 liters). The total volume hot water availability for certain water

instantaneous water heaters in that they withdrawn shall be 9 gallons (34 liters) heaters by the 1990 final rule. (55 FR

are not defined in the test procedure. for units having rated storage capacities 42162, October 17, 1990).) For example, The Department, therefore, proposes to less than 10 gallons (38 liters). The draw in a October 15; 1991, letter from GAMA

include definitions for these two types rate shall be 1.0±0.25 gallons per minute to DOE, GAMA stated that "Gas

of instantaneous water heaters, and to (3.8±0.95 liters per minute) for all units Appliance Manufacturers Association

amend the existing language to include having rated storage capacities less than members have results establishing first

the testing of them. Definitions for 20 gallons (76 liters). The Department hour ratings in the range of 70 to 75

storage-type water heaters are also requests comments and data regarding gallons for 120 gallon models. The

modified to differentiate these types any impact on a manufacturer(s) as a calculated first hour rating is

from the instantaneous-type water result of extending coverage of the significantly less than the amount of

heaters. As a result, oil-fired and electric existing minimum energy efficiency water drawn during the first draw."

instantaneous water heaters will be standards to storage-type water heaters This problem with the October 17, 1990,

subject to the applicable minimum of less than 20 gallons (76 liters). See current test method is most evident for

energy conservation standards of 0.59- appendix E to subpart B of Title 10 CFR large tanks with one heating element

(0.0019 x rated storage volume in part 430, sections 1.11, 5.1.4.1, and because of the greater weighing given by gallons) for oil-fired water heaters and 5.1.5. , I the test procedure to recovery rate

0.93-(0.00132 x rated storage volume in relative to storage volume.

gallons) for electric water heaters, 3. First Hour Rating for Storage-typeTo correct the problem of

respectively. For electric and oil fired Water Heaters understating hot water production cited

instantaneous water heaters, the rated Water heaters have historically been by GAMA, the Department requested

storage volume may be zero. In today's selected based on rated storage volume. NIST to evaluate a proposal

proposed notice, the Department The rate at which the water heater recommended by GAMA in its October

requests comments and data regarding produces hot water, and whether the 15, 1991, letter to DOE. GAMA's

the appropriateness of adding electric water heater uses a lone or multiple heat recommendation would prorate the final

:and oil-fired instantaneous water source, however, is also important when draw of the 1990 first hour rating test

heaters to the test procedure and selecting a water heater. For example, a with respect to a ratio of elapsed times.

subjecting them to the respective energy smaller electric water heater having two NIST summarized the advantages and

conservation standards. See appendix E 4.5-kilowatt elements may provide more disadvantages of GAMA's

to subpart B of Title 10 CFR part 430, hot water over a given time interval than recommendation. The major advantages

sections 1.8 and 5.2. a larger electric water heater having a are: The first hour rating would always

Hi- „,„ ,single 3.8-kilowatt element. The first be greater than or equal to the first draw 2. Storage-type Water Heaters Having hour rating seeks to account for the volume and retesting for FTC labeling Rated Storage Capacities Less Than 20 effect of storage capacity, heating rate, may be unnecessary if the needed

Gallons (76 liters) and the number of heat sources on the additional data was collected. The major

In a letterto the Department, dated water heater's ability to provide hot disadvantages are: The rating would

July 17, 1991, the Gas Appliance water. Ideally, the consumer will use represent a volume of hot water that is

Manufacturer Association (GAMA) first hour rating to initially identify greater than or equal to the maximum

stated that storage-type water heaters water heaters that will meet their hot volume of hot water that can be

having capacities less than 20 gallons water supply needs. Once the field has delivered in an hour (overstating), and

(76 liters) are covered by the National been narrowed based on this need, the it may not differentiate single-element

Appliance Energy Conservation Act of consumer will then use energy factor, from two-element electric water heaters

1987. The current test procedure does annual operating cost, first cost, (recovery capabilities unrecognized).

not cover storage-type water heaters warranty information, reputation of The Department, therefore, concludes

having rated storage capacities less than manufacturer, etc., indetermining that the disadvantages of GAMA's

20 gallons (76 liters) and, therefore, which water heater to select. recommendation outweigh the

those water heaters are not subject to the The first hour rating is not used in advantages and rejects this proposal.

minimum efficiency standards. In order computing the efficiency (i.e., energy The Department requested NIST to

to correct this, GAMA requested that the factor) of water heaters, but is used by conduct a second study to correct the

test procedure be revised. DOE proposes the Federal Trade Commission for problem of understating hot water

to provide coverage for storage-type presenting size ranges in the labeling production. NIST recommended that a

water heaters of less than 20 gallons (76 program for water heaters. It was hoped revised version of the 1989 test method

liters). - that this measure would gain be proposed. NIST stated its

With regard to conducting the 24-hour recognition as a sizing criterion for recommendation will correct the

simulated use test on water heaters consumers in selecting water heaters. As understating problem cited by GAMA in

EE-RM-94-230 COMMENT 49L

15332 Federal Register / Vol, 60, No. 56 / Thursday, March 23, 1995 I Proposed Rules 

procedure for heat pump water heaters 

regarding the use of backup electric 

resistance element(s). 

Concurrently, the Department is 

conducting a rulemaking, independent 

of today's notice, to propose revised 

minimum ene~gy consetvation 

standards for eight consumer products, 

includir:tg water heaters. (59 FR 10464. 

March 4.1994). ' 

1. Electric and Oil-Fired Instantaneous 

Water Heaters 

The current test procedure does not 

address testing of electric andoll-fired 

instantaneous water heaters in that they 

are not defined in the test procedure. 

The Department. therefore. proposes to 

include definitions for these two types 

of instantaneous water heaters. and to 

amend the existing language to include 

the testing of them. Definitions for 

storage-type water heatersare,also 

modified to differentiate these types 

from. the instantaneous-type water 

heaters. As a result. oil-fired and electric 

instantaneous water heaters will be 

subject to tfJe applicable minimum 

energy consetvation standards of 0.59- (0~0019 x rated storage volume in . 

gallons) foroll-fired water heaters and 

0.93-(0.00132 x rated storage volume in 

. gallons) for electric water heate,rs. 

respectively •. For electric and oil fired 

instantaneous water heaters. the rated 

storage volume may be zero. In today's 

proposed notice .. the Department 

requests comments and data regarding 

the appropriateness of adding.electric 

and oil-fired instantaneous water 

heaters to the test procedure and 

subjecting them to the respective energy 

consetvation standards. See appendix E 

to subpart B of Title 10 CFR part 430.' 

sections 1.8 and 5.2. 

2. Storage-type Water Heaters Having 

Rated Storage Capacities Less Than 20 

Gallons (76 liters) 

In a letterto the Department. dated 

July 17. 1991. the Gas Appliance 

Manufacturer Associatipn (GAMA) 

stated that storage-type water heaters 

having capacities less than 20 gallons 

(76 liters) are covered by the National 

Appliance Energy Consetvation Act of 

1987. The current test procedure does 

not cover storage-type water heaters 

having rated storage capacities less than 

20 gallons (76 liters) and. ,therefore, 

those water heaters are not subject to the 

minimum efficiency standards. In order 

to correct this. GAMA requested that the 

test procedure be revised. DOE proposes 

to provide coverage for storage-type 

water heaters of less than 20 gallons (76 

liters). . I 

. With regard to condu~ing the 24-hour 

simulated use test on water heaters 

having rated storage capacities less than . a result. the Department has been 

20 gallons (76 liters). the Department conducting a continuous effort to 

proposes to include the applicable draw improve the first hour rating method in 

schedule accepted by the water heater rule makings for water heaters. However; 

indusuy. (See American National the concept of what the first hour rating 

Standards Institute! American Society of should represent (i.e .• a balance between 

Heating, Refrigeratirlgand Air- storage capacity. recovery rate. and 

Conditioning Engineers (ASHRAE) mixing characteristics) and how to 

Standard 118.2-1993: Method of Testing . measure it accurately has proven to be 

, for Rated Residential Water Heaters.}. a difficult taSk. ,Each attempt at . 

Thelotal volume withdrawn shall be 24 establishing a first hour rating test has 

gallons (91 liters} for units I)aving rated led to diffic41ties (repeatability problem' 

storage capacities greater than or equal with the 1989 proposal (54 FR 1890. 

to 10 gallons (38 liters). but less than 20 J~muaJY 17. 1989). and a low estimate of 

gallons (76 liters). The total volume hot water availability for certain water 

withdrawn shall be 9 gallons (34 liters) heaters by the 1990 finid rule~ (55 FR 

for units having rated storage capacities 42162. October 17. 1990).} For example. 

less than 10 gallons (38 liters). The draw in a October 15; 1991. letter from GAMA 

rate shall be 1.0±0.25 gallons per minute to DOE. GAMA stated that "Gas 

(3.8±0.95 liters per minute) for all units Appliance Manufacturers Association 

having rated storage capacities less than members have results establishing first 

20 gallons (76 liters}. The Department hour ratings in the range of 70 to 75 

requests comments and data regarding gallons for 120 gallon models. The 

any impact on amanufacturer(s} as a calCulated first ho~ rating is 

result of extending coverage afthe significantly less than the amount of 

existing minimum energy efficiency water drawn during the first draw." 

standards to storage-type water heaters . This problem with the Qctober 17. 1990. 

of less thaI) 20 gallons (76 liters). See current test method is most eVident for' 

appendix E to subpart B of Title 10 CFR large tanks with one heating element 

part 430. sections 1.11. 5.1.4.1. and because of the greater weighing given by 

5.1.5. . , the test procedure to recovery rate . rel~tive to storage volume. 

3. First Hour Rating for Storage-type To correct the problem of , 

. Water Heaters understating hot water production cited 

Water heaters have historically been by GAMA. the Department requested 

selected based on rated storage volume. NIST to evaluate a proposal 

The rate at which the water heater recommended by GAMA in its October 

produces hot'water. and whether the . 15. 1991. letter to DOE. GAMA's 

water h~ter uses a lone or multiple heat recommendation would prorate the final 

source, however. is also i~portant when draw ofthe 1990 first hour rating test. 

selecting a water heater. For example, a with respect to a ratio of elapsed times. 

smaller electriC wat~ heater having two NIST summarized the advantages and 

4.5-kilowatt elements may provide more. disadvantages of GAMA's 

hot water over a given time intetval than recommendation. The rrtajor advantages' 

a larger electric water heater having a are: the first hour rating would always 

single 3.8-kilowatt element. The first be greater than or equal, to the first draw 

hour rating seeks to account for the· volume and retesting for FTC labeling 

effect of storage capacity. heating rate. may be unnecessary if the needed 

and the number of heat sources on the additional data was collected. The major 

water heater's ability to provide hot. disadvantages are: The rating would. 

water. Ideally,'the consumer will use represent a volume of hot water that is 

first hour rating to initially identify greater than or equal to the maximum 

water heaters that will meet their hot volume of hot water that can be . water supply needs. Once the field has delivered in an hour (overstating). and 

been narrowed based on this need. the it may not differentiate single-element 

consumer will then use energy factor. from two-element electric water heaters 

annual ~perating cost. firSt cost. (recovery capabilities unrecognized). 

warranty information. reputation of The Department. 'therefore. concludes 

manufacturer. etc .. in determining that the disadvantages of GAMA's 

which water heater to select.' recommendation outweigh the 

The first hour rating is not used in advan~es and rejects this proposal. 

computing the efficiency. (te .• energy The Department requested NIST to 

factor). of water heaters .. but is used by conduct a second study to correct the 

the Federal Trade Commission for problem of understating hot water' 

presenting siz~ ranges in the labeling . production. NIST recommended that a' 

program for water h~ters. It was hoped revised version of the 1989 test method 

that this measure. would gain . be proposed. NIST stated its 

recognition as aSizing.criterionfor recommendation will correct the _ 

consumers in selecting water heaters. As understating problem cited by.GAMA in 

t 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15333

the October 15, 1991, letter, and in DOE is not employing a temperature element thermostat or compressor

addition, will minimize the ratio correction to handle mixing effects. thermostat is heated to 135 + 5°F (57.2

aforementioned repeatability problem. The Department requests comments and ± 2.8°C) when cut-off occurs. The

The Department concurs and today data concerning the appropriateness of Department requests comments and data

proposes a revised first hour rating today's proposal relative to thermally on the appropriateness and workability

method for storage tank-type (including compensating dip tubes, internal mixing of the proposed changes to the test

heat pump) water heaters. Section 5.1.4. valves,'or any other mechanism used to method for heat pump water heaters

Included in the proposed first hour increase the amount of mixing of stored that use supplemental resistive heating.

rating are: Revisions to the test method hot water and make-up water during a See appendix E to subpart B of Title 10

for storage tank-type water heaters, hot draw. CFR part 430, section 5.1.4.2.

and cold water mixing characteristics, The Department also notes that with

and the criterion for initiating a multiple draw first hour rating test, 4 Definitions for Heat Pump Water

successive draws when conducting a like the one proposed today, a Heater

first hour rating test on heat pump water temperature ratio can be used to Heaters, Integral Heat Pump Water

heaters that use supplemental resistive compensate for the effect of the test Heaters, Solar Water Heaters and Heat

heating. tolerances allowed for the thermostat Pump Water Heater Storage Tanks

In regard to storage tank-type water setting(s) 1±5°F (±2,80C)], and for the The Department proposes to amend

heaters, for draws initiated prior to one make-up water temperature [±20F the extant definition for heat pump

hour (as a result of a thermostat cut-out), (±1.1°C)|. These test tolerances affect the water heaters (section 1.11.3); add

the maximum outlet temperature shall time required for the water heater to definitions of integral heat pump water

be determined for each draw and used recover from a hot water draw. For heater (section 1.11.3.a), add-on heat

for determining when to terminate that example, recovery time is quickest if the pump water heaters (section 1.11.3.b),

draw, i.e., at T*=, - 25°F, where i tank thermostat(s) is get to 130°F and solar water heaters (section 1.11.5)

corresponds to the draw number. If a (54.4°C), and the make-up water is set to differentiate these types of water

recovery is still in progress at one hour, at 60°F (15.6°C). Recovery time is heaters; and add definition of a heat

the draw imposed to remove any stored slowest for settings at 140°F (60°C) and pump water heater storage tank, i.e., the '

"hot" water shall be terminated based 56°F (13.3°C). To avoid the potential tank to be used with an add-on heat

on the cut-off temperature used for the complication and confusion that would pump water heater (section 1.6).

previous draw (T* -1 - 25°F). In result from an additional temperature B Kitchen Ranges Ovens and

addition, for draws imposed at one ratio correction, however, a test Microwave Ovens Test Procedures

hour, the first hour rating shall be the tolerance correction is not included in

sum of: All the withdrawn volumes and today's proposal. The Department The test procedures for kitchen

the final withdrawn volume, where the recognizes that an incentive exists to ranges, ovens and microwave ovens

final withdrawn volume is multiplied conduct the first hour rating test with have remained substantially unchanged

by the following temperature ratio: the tank thermostat set at or near 130°F since the final rule was published in the

(T*dl.,nT**ini -1 ) /(T*d.n- 1 (54.4°C), and with the make-up water at Federal Register on May 10, 1978 (43

-T*iD, - I). The subscripts n and n-1 or near 60°F (15.6°C). FR 20120). It was amended on April 13,

are used to indicate the final draw and Preliminary studies conducted by 1979, by prescribing that natural gas or

the next-to-last draw, respectively, NIST estimate today's proposed test propane would be the test gas used with

while T*n, 1I designates the water method is successful in minimizing the gas ranges and ovens (44 FR 22418).

temperature at which the next-to-last repeatability problem to within ± 5 Today's proposed amendment will

draw was terminated (T*min, -1 = percent relative to the 1989 proposal. change the annual useful cooking

T*,, - 1 - 250 F). For all other draw The Department today requests energy output for kitchen ranges, ovens

volumes, no temperature ratio comments and data concerning this and microwave ovens to make it

adjustment factor shall be used. repeatability issue. representative of current United States

The Department notes that a In addition, the Department proposes cooking product usage. In addition, the

temperature ratio can and has been used to modify the existing first hour rating proposed test procedure will no longer

in the past to compensate for the definition so that it differentiates contain annual energy consumption

amount of mixing that occurs between between storage and instantaneous calculations for ranges (cooktop and

the stored hot water and the entering water heaters. Section 1.5. oven combined), or other combined

make-up water during a draw. The In regard to heat pump water heaters appliances (multiple conventional

greater the volume of make-up water that use supplemental resistive heating, ovens, microwave and conventional

mixed into the outlet stream (while still a draw is currently initiated only after range combined). The Department is

maintaining an outlet temperature above all power to the water heater has been proposing to calculate the annual energy

the criterion of "hot" water), the greater reduced, which corresponds to the case consumption of combined appliances as

the first hour rating. The amount of where the compressor has cycled off the sum of the annual energy

mixing is typically small and repeatable and any resistive heating has ceased. consumption of each individual

for designs that introduce make-up The Department today proposes a component of the unit. Section 4.3. The

water near the bottom of the tank. revision to the criterion used to initiate Department is proposing to incorporate

However, if a water heater uses a successive draws so that credit is given by reference the International

thermally compensating dip tube (first if this type of water heater provides a Electrotechnical Commission (IEC),

discussed in the February 8, 1984, partial recovery. The proposed revision Publication 705, and Amendment 2-

Proposed Rulemaking, 49 FR 4870), or would require a draw to be initiated 1993, "Methods for Measuring the

an internal mixing valve, substantial after the thermostat controlling the Performance of Microwave Ovens for

mixing, and thus, a higher and upper or lone resistive element, or the Household and Similar Purposes,"

unrealistic first hour rating could occur. compressor is satisfied, whichever Section 4, Paragraph 12 "Microwave

At present, DOE is not aware of any occurs first. However, this criterion Power Output Measurement," Paragraph

currently manufactured water heaters shall be applicable only if the water 13 "Electrical Power Output

which contain these features. Therefore, located vertically above the resistive Measurement," and Paragraph 14

EE-RM-94-230 COMMENT 49L

Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15333 

the October IS, 1991. letter, and in 

addition, will minimize the 

aforementioned repeatability problem. 

The Department concurs and today 

proposes a revised first hour .rating 

method for storage tank-type (including 

heat pump) water heaters. Section 5.1.4. 

Included in the proposed first hour 

rating are: Revisions to the test method 

for storage tank-type water heaters, hot 

and cold water mixing characteristics, 

and the criterion for initiating 

successive draws when conducting a 

first hour rating test on heat pump water 

heaters that use supplemental resistive 

heating. , In regard to storage tank-type water 

heaters, for draws initiated prior to one 

hour (as a result of a thermostat cut-out), 

the maximum outlet temperature shall 

be determined for each draw and used 

for determining when to terminate that 

draw, i.e., at T* 1IUIJl,i - 25°F, where i 

corresponds to the draw number. If a 

recovery is still in progress at one hour, 

the draw imposed to remove any stored 

"hot" water shall be terminated based 

on the cut-off temperature used for the 

previous draw (I'*max.n-l -2S°F). In 

addition,.fordraws imposed at one 

hour, the first hour rating shall be the 

sum of: All the withdrawn volumes and 

the final withdrawn volume, where the 

final withdrawn volume is multiplied 

by the following temperature ratio: 

(1'* del.D - T* miD.D -I) /(T* del.D-I - T* miD.D-l). The subscripts nand n-l 

are used to indicate the final draw and 

the next-to-last draw. respectively. 

, While T* miD.n-l designates the water 

temperature at which the next-to-last 

draw was terminated (T* min,n - 1 = 

T*1IUIJl,D-I -2S°F). For all other draw 

volumes, 'no temperature ratio 

adjustment factor shall be used. 

The Department notes that a 

temperature ratio can and has been used 

in the past to compensate for the 

amount of mixing that occurs between 

the stored hot water and the entering 

make-up water during a draw. The 

greater the volume of make-up water 

mixed into the outlet stream (while still 

maintaining an outlet temperature above 

the criterion of "hot" water), the greater 

the first hour rating. The amount of 

mixing is typically small and repeatable 

for designs that introduce make-up 

water near the bottom of the tank. 

However, if a water heater uses a 

thermally compensating dip tube (first 

discussed in the February 8, 1984, 

Proposed Rulemaking, 49 FR 4870). or 

an internal mixing valve, substantial 

mixing,and thus, a higher and 

unrealistic first hour rating could occur. 

At present, DOE is not aware of any 

currently manufactured water heaters 

which contain these features. Therefore, 

DOE is not employing a temperature 

ratio correction to handle mixing effects. 

The Department requests comments and 

data concerning the appropriateness of 

today's proposal relative to thermally 

compensating dip tubes,internal mixing 

valves, 'or any other mechanism used to 

increase the amount of mixing of stored 

hot water and make~up water during a 

draw. 

The Department also notes that with 

a multiple draw first hour rating test, 

like the one proposed today, a 

temperature ratio can be used to 

compensate for the effect of the test 

tolerances allowed for the thermostat 

setting(s) 1±5°F (±2.8°C)], and for the 

make-up water temperature 1±2°F , 

(±l.l 0C)]. These test tolerances affect the 

time required for the water heater to 

recover from a hot water draw. For 

example, recovery time is quickest if the 

tank thermostat(s) is set to 130°F 

(S4.4°C), and the make-up water is set 

at SO°F (IS.S°C). Recovery time is 

slowest for settings at 140°F (SO°C) and 

SsoF (13.3°C). To avoid the potential 

complication and confusion that,would 

re~ult from an additional temperature 

ratio correction, however, a test 

tolerance correction is not included in 

today's proposal. The Department 

recognizes that an incentive exists to 

conduct the first hour rating test with 

the tank thermostat set at or near 130°F 

(54.4°C), and with the make-up water at 

or near SO°F (IS.S°C).-

Preliminary studies conducted by 

NIST estimate today's proposed test 

method is successful in minimizing the 

repeatability problem to within ± S 

percent relative to the 1989 proposal. 

The Department today requests 

comments and data concerning this 

repeatability issue. 

In addition, the Department proposes 

to modify the existing first hour rating 

definition so that it differentiates 

between storage and instantaneous, 

. water heaters. Section I.S. 

In regard to heat pump water heaters 

that use supplemental resistive heating, 

a draw is currently initiated only after 

all power to the water heater has been 

reduced, which corresponds to the case 

where the compresSor has cycled off 

and any resistive heating has ceased. 

The Department today proposes a 

revision to the criterion used to initiate 

successive draws so that credit is.given 

ifthis type.ofwater heater provides a 

partial recovery. The proposed revision 

would require a draw to be inltiated 

after the thermostat controlling the 

upper or lone resistive element, or the 

compressor is satisfied, whichever 

occurs first. However, this criterion 

shall be applicable only if the water 

located vertically above the resistive 

element thermostat or compressor 

thermostat is heated to 13S ± SOF (57.2 

± 2.8°C) when cut-off occurs. The 

Department requests comments and data 

on the appropriateness and workability 

of the proposed changes to the test 

method for heat pump water heaters 

that use supplemental resistive heating. 

See appendix E to subpart B of Title 10 

CF~ part 430, section 5.1.4.2. 

4. Definitions for Heat Pump Water 

Heaters, Add-on Heat Pump Water 

Heaters, Integral Heat Pump Water 

Heaters, Solar Water Heaters, and Heat 

Pump Water Heater Storage Tanks 

. The Department proposes to amend 

the extant defUlltion for heat pump 

water heaters (section 1.11.3); add 

definitions of integral heat pump water 

heater (section 1.11.3.a), add-on heat . 

pump water heaters (section 1.11.3.b), 

and solar water heaters (section 1.11.S) 

to differentiate these types of water 

heaters; and add definition of a heat 

pump water heater storage tank, i.e., the' 

tank to be used with an add-on heat 

pump water heater (section I.S). 

B. Kitchen Ranges. Ovens and 

Microwave Ovens Test Procedures 

The test procedures for kitchen 

ranges, ovens and microwave ovens 

have remained substantially unchanged 

since the final rule was published in the 

Federal Register on May 10, 1978 (43 

FR 20120). It was amended on April 13, 

1979. by prescribing that natural gas or 

propane would be the test gas used with 

gas ranges and ovens (44 FR 22418). 

Today's proposed amendment will 

change the annual useful cooking 

energy output for kitchen ranges, ovens 

and microwave ovens to make it 

representative of current United States 

cooking product usage. In addition. the 

proposed test procedure will no longer 

contain annual energy cons1,lmption 

calculations for rariges (cooktop and 

oven combined). or other combined 

appliances (multiple 'conventional 

ovens. microwave and conventional 

range combined). The Department is 

proposing to calculate the annual energy 

consumption of combined appliances as 

the sum of the annual energy 

consumption of each individual 

component of the unit. Section 4.3. The 

Department is proposing to incorporate 

by reference the International 

Electrotechnical Commission (1EC). 

Publication 70S, and Amendment 2-

1993, "Methods for Measuring the 

Performance of Microwave Ovens for 

Household and Similar Purposes," 

Section 4, Paragraph 12 "Microwave 

Bower Output Measurement," Paragraph 

13 "Electrical Power Output 

Measurement," and Paragraph 14 
15334 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

"Efficiency." DOE has not proposed test for Consumer Products, Volume 2, Volume 2, November 1993, DOE/EEprocedures for grill and griddle cook November 1993, DOE/EE-0009, Vol. 2 0009, Vol. 2 of 3, pp. 1-49. After

tops; the Department would consider of 3. reviewing several utility studies and

adding test procedures for these Mrwa comments, DOE is proposing to change

products if such exist . icrowave vensthe annual useful cooking energy 4 from

1., nwove~~nsThe proposed changes to the 34.2 kWh (123 M) per year to 77.3 kWh

.microwave oven test procedures are in (278.3 M) per year. This revision to the

Today's proposed revision to the oven response to a petition for rulemaking annual useful cooking energy reflects

test procedures lowers the constant for from the Association of Home current U.S. microwave cooking usage. annual useful cooking energy2 to make Appliance Manufacturers (AHAM) to This will change the value of Om in the

it representative of current United States use the International Electrotechnical test procedure to 77.3 kWh/yr 1143.2

cooking trends. This quantity is being Commission standard as the DOE test kWh/yr x 0.54 =77.3 kWh/yrl (278.3

changed for electric to 35.5 kWh (105.5 procedure. The current DOE test MJ/yr). (See appendix I to subpartB of

MJ) per year from 47.09 kWh (169.5 MJ) procedure is based on a 1975 version of title 10 CFR part 430, "Uniform Test

per year; for gas, to 124,200 BTU the International ElectrotechnicalMethod for Measuring the Energy

(131,038 kJ) per year from 160,700 BTU Commission standard. The Association Consumption of Conventional Ranges

(169,547 kJ) per year. Sections 4.1.2.1.1, of Home Appliance Manufacturers cited Conventional Cooking Tops,

4.1.2.1.2, and 4.1.4. Lawrence Berkeley the following deficiencies with the DOE Conventional Ovens and Microwave

Laboratory of Berkeley, California test procedure: Ovens," sections 4.4.3 and 4.4.5). calculated this constant from several (1) Errors caused by evaporative Lawrence Berkeley Laboratory of

utility studies. These results are cooling of the water and heat absorption erkele California calculated this

presented in the Technical Support of the water containers during the constant from an average of six utility

Document: Energy Efficiency Standards heating period, andstudies Th stdis in

for Consumer Products, Volume 2, (2) Errors caused by the constantly uawrence Berkeley Lab

November 1993, DOE/EE-0009, Vol. 2 changing sodium chloride concentration L aw r

en ce Daforkhe Reb tial and

of 3. due to sodium chloride precipitating out eln aesidential

In addition, the Department proposes of solution.t of a Residetial

to eliminate the requirement to use a The International Electrotechnical Forecasting Database," LBL 33717, May

standard continuous flow calorimeter Commission issued Publication 705 1994; American Electric Power, Utl

for gas cooking products because of the and Amendment 2-1993 entitled Estimates of Household Appliance

difficulty of locating this product. The "Method for Measuring the Performance Electricity Consumption," 1992;

instrument to be substituted for the of Microwave Ovens for Household and outhern CalforniaEdison,

standard continuous flow calorimeter is Similar Purposes" in 1993. The "Residential Appliance End-Use

left to the discretion of the Department asked the National Institute Survey," 1990 and 1991; Electric Power

manufacturer; although, it is required of Standards and Technology to perform Research Institute, "Residential End-Use

that the heating value of natural or tests using the 1993 International Energy Consumption: A Survey of

propane gas shall be measured with an Electrotechnical Commission testonditional Demand Estimates," CUinstrument and associated indicator procedure. The National Institute of 6487, October 1989; and the Sierra

readout device of a maximum error no Standards and Technology found the Pacific Power Company, "Integrating

greater than ±.5 percent of the measured test procedure to be acceptable for EIP and HESS Information for

value and a resolution of ±.2 percent or determining power output and Estimating End-Use Energies," March

less of the full scale reading of the efficiency, and recommended that the 1988. The microwave oven annual

indictor instrument. Section 2.9.4. Department of Energy incorporate by energy consumption proposed in

reference the International today's notice also includes the energy 2. Cook Tops Electrotechnical Commission 705 used by the clock thus, eliminating the

The proposed revision to the cook top Amendment 2-1993 test procedure for necessity to disable the clock during test

test procedures changes the constant for these purposes. In computing energy setup.

annual useful cooking energy 3 to make consumption, the International C. Clothes Washer Test Procedure

it representative of current United States Electrotechnical Commission 705

cooking trends. This quantity is being Amendment 2-1993 uses a watt meter The Department published the clothes

lowered for electric to 209 kWh (752.4 and timer, ignoring transients, to obtain washer test on eptemer 28,

Mi) per year from 277.7 kWh (1000 Mi) measurements from which energy 1977, (42 FR 49802) and subsequently

per year; for gas, to 732,500 BTU consumption can be calculated. The on June 29, 1979, (44 FR 37938)

(772,800 kJ) per year from 947,500 BTU Department believes that because of editorial changes were made. On

(999,600 kj) per year. Lawrence start-up transients, the use of a watt- December 22, 1993, (58 FR 67710) the

Berkeley Laboratory of Berkeley, hour meter is more accurate; therefore, Department published a proposed

California calculated this constant from today's notice includes the use of a amendment to the clothes washer test

several utility studies. These results are watt-hour meter, which is not found in procedure to address washers which

presented in the Technical Support the EC 1993 test proedure,to obtain offer a warm rinse lock-out feature. the IEC 1993wtest prockedure.,to obtain'

Document: Energy Efficiency Standards energy consumption.Today's proposed amendments tothe

-_The annual useful cooking energy in clothes washer test procedure will

2The annual useful cooking energy is energy the extant test procedure is 34.2 kWh

input to an oven which is transferred to the product (123 Ml) per basr d o 1976 data The annual useful cooking energy is energy

being cooked and is a constant used to find the ( peyar e n . input to an oven which is transferred to the product annual energy consumption and the energy factor. In the Eight Product rulemaking (59 FR being cooked and is a constant used to find the

The annual energy consumption is calculated by 10464, March 4, 1994), DOE used an annual energy consumption and the energy factor.

multiplying the constant by the ratio of test energy annual useful cooking energy of 145.8 The annual energy consumption is calculated by consumption to the energy used to heat the test kWh per year its analysis Technical multiplying the constant by the ratio of test energy block. The energy factor is the tconstant kWhperyearin tsanalysis. Technical consumption to the energy used to heat the test

to the total annual energy consumption Support Document: Energy Efficiency water load. The energy factor is the ratio of the

3 See footnote 2, supra. Standards for Consumer Products, constant to the total annual energy consumption.

EE-RM-94-230 COMMENT 49L

15334 Federal Register / Vol. 60. No. 56/ Thursday. March 23. 1995 / Proposed Rules 

· "EfficienCy." DOE has not proposed test for Consumer Products, Volume·2. , 

procedures for grill and griddle cook November 1993. DOElEE-0009. Vol. 2 

tops; the Department would consider of 3. 

adding test procedures for these' 3. Microwave Ovens .. products if such exist. 

The proposed changes to the 

.1. Ovens . . microwave oven test procedures are in 

Today's proposed revision to the oven response to a petition for rulemaking . 

test procedures lowers the constant for from the Association of Home' 

annual useful cooking energy 2 to make Appliance Manufacturers (AHAM) to 

it representative of curren~ United States use the International Electrotechnical 

cooking trends. This quantity is being . Commission standard as the DOE test 

changed for electric to 35,5 kWh (105.5. procedure. The current DOE test 

. MJ) per year from 47.09 kWh (169.5 MJ) procedure is based on a 1975 version of 

per year; for gas, to 124.200 BTU. the International Electrotechnical . 

(131.038 kj) per year from 160.700 BTU Commission standard. The Association 

(169.547 kJ) per year. Sections 4.1.2.1.1. of Home Appliance Manufacturers cited 

4.1.2.1.2, and 4.1.4. Lawrence Berkeley the following deficiencies with the DOE 

Laboratory of Berkeley. California test rrocedure: . , calculated this constant from several (1 Errors caused by evaporative 

· utility studies. These results, are • cooling of the water and heat absorption 

presented in the Technical Support of the water containers during.the 

Document: Energy EfficienCy Standards heating period. and'. . , 

for Consumer Products. Volume 2. (2) Errors. caused by the constantly 

November 1993. DOElEE-0009, Vol. 2 changing sodium chloride concentration 

of 3. due to sodium chloride precipitating out 

In addition. the Department proposes of solution. . · to eliminate the requirement to use a. The International EIectrotechnical 

standard continuous flow calorimeter Commission issued Publication 705. 

for gas cooking products because of the . and Amendment 2,..1993 entitled 

difficulty of locating this product. Thl[! "Method for Measuring the Performance 

instrument to be substituted for the of Microwave Ovens for Household and 

standard continuous flow calorimeter is' . Similar Purposes" in 1993. The' 

left to the discretion of the . . Department asked the National Institute 

manufacturer; although. it is required of Standards and Technology to perform 

. that the heating value of natural or tests using the 1993 International 

propane gas shall be measured with. an . Electrotechnical Commission test 

instrument and associated indicator procedure. The National Institute of 

readout device of a maximum error no Standards arid Technology found the 

greater than ±.5percent of the measured test procedure to be acceptable for 

value and a resolution of ±.2 percent or determining power output and 

less of the full scale reading of the efficiency, ana recommended that the.' 

indictor instrument. Section 2.9.4. Department of Energy incorPorate by 

reference the Intl[!rnational 

2. Cook Tops Electrotechnical Commission 705 

The proposed revision to .the cook top, Amendment 2-:-1993 test procedure for 

test procedures changes the constant for' these purposes. In computing energy 

annual useful cooking energy 3 to make consumption, the International. 

it representative of current United States Electrotechnical Commission 705 

cooking trends. This quantity is being Amendment 2-1993 uses a watt meter 

lowered for electric to 209 kWh (752.4 and timer, ignoring transients. to obtain 

MJ) per year from 277.1 kWh (1000 MJ) measurements from which energy 

per year; for gas, to 732.500 BTU '. ccinsumption can be calculated. The 

(772.800 kJ) per year from 947.500 BTU Department be~ieves that because of 

(999.600 kJ) per year. Lawrence start-up transients. the use of a wattBerkeley laboratory of Berkeley, hour meter is more accurate; therefore. 

California calculated this constant from today's nottceincludes the use of!i 

several utility studies. These results are watt-hour meter. which is not found in 

presented in the Technical Support the IEC 1993test procedure;to obtain 

Document: Energy Efficiency Standards energy consumption. 

The annual useful cooking energy in 

the extant test procedure is 34.2 kWh 

(123 MJ) per year b8sed on 1976 data. 

In the Eight Product rulemaking (59 FR 

10464. March 4. 1994). DOE used an 

annual useful cooking et:lergy of 145.8 

kWh per year in its analysis. Technical 

Support Document: Energy Efficiency 

Standards for Consumer Products, 

2 The annual useful cooking merBY Is enerBY 

input to an oven which is transferred to the product 

being cooked and is a constant used to find the 

annual enerBY consumption and the enef8Y factor. 

The annual enerBY consumption Is calculated by 

mulrtplylng the constant by the ratio of test enerBY 

consumption to the enef8Y used to heat the test' . 

block. The enef8Y factor Is the ratio of the constant 

to the total annual enerBY consumption. 

• See footnote 2, supra. . 

Volume 2. November 1993. DOEIEE0009, Vol. 2 of 3. pp. 1-49. After 

reviewing several utility studies and 

comments. DOE is proposing to change 

the annual useful cooking energy4 from 

34.2 kWh (123 MJ) per year to 77.3 kWh 

(278.3 MJ) per year. This revision to the 

annual useful cooking energy reflects 

. current U.S. microwave cooking usage. 

This. will change the value of 0", in the 

test procedure to 77.3 kWhlyr (143.2 

kWhlyr x 0.54 =77.3 kWhlyr) (278.3 . 

MJ/yr). (See appendix I to subpart'B of . 

.,title 10 CFR part 430. "Uniform Test 

Method for Measuring the Energy 

Consumption of Conventional Ranges. 

Conventional Cooking Tops. 

Conventional Ovens. and Microwave 

Ovens." sections 4.4.3 and 4.4.5). 

Lawrence Berkeley Laboratory of 

Berkeley. California calculated this 

constant from an average of six utility 

studies. These studies include: · Lawrence Berkeley Laboratory. . 

"Baseline Data for the Residential and 

Development of a Residential 

Forecasting Database," lBl 33717. May 

1994; American Electric Power. "Utility , 

Estimates of Household Appliance 

Electricity Consumption." 1992; 

Southern California Edison. . "Residential Appliance End-Use 

· SUlVey," 1990 and 1991; Electric Power 

Research Institute, "Residential End-Use 

Energy Consumption: A Survey of 

Conditional Demand Estimates. ,. CU6487. October 1989; andthe"Slerra 

Pacific Power Company, "Integrating 

EIP and HES5 Information for 

Estimating End-Use Energies." March 

1988. The microwave oven annual 

energy consumption proposed in 

today's notice also includes the energy 

used by the clock thus. eliminating the 

necessity to disable the clock during test 

setup. 

C. Clothes Washer Test Procedure 

The Department published the clothes. 

washer test procedure on September 28, 

1977. (42 FR 49802) and, subsequently 

on June 29. 1979. (44 FR 37938) 

editorial changes were made. On 

December 22. 1993. (58 FR6771 0) the 

Department published a proposed 

amendment to the clothes washer test 

procedure to address washers which, . 

offer a warm rinse lock-out feature. 

Today's proposed amendments tothe 

· clothes washer test ~rocedure will 

·The annual useful cooking enerBY Is en8f8Y 

input to an oven which Is transferred to the product 

being cooked and IS a constant 1B8d to ftndthe 

annual enerBY consumption and the enef8Y factor. 

The annual enerBY consumption IS calculated by 

multiplying the constant by the ratio of test enerBY 

consumption to the enef8Y used to heat the test 

water lOad. The enef8Y factor Is the ratio of the 

constant to the total annual enef8Y consumption. 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15335

address issues that are independent Department has become aware of top- Therefore, instead of developing

from the temperature selection lock-out loading-horizontal-axis clothes washers additional Temperature Utilization

feature. which are readily available in other Factors, the Department is proposing to

Today's proposed amendments to the countries. These clothes washers have require the use of the temperature

clothes washer test procedure do not not yet become available in the U.S. selection which results in the largest

alter the energy factor of any existing market; however, the Department wants amount of hot water consumption for

clothes washer that minimally complies to provide nomenclature for this type of the energy consumption calculations

with the existing efficiency standard. clothes washer. (section 4.1.1.1). The Department

In the Advance Notice of Proposed The Department is proposing to delete believes the use of the temperature

Rulemaking for energy conservation the following definitions: "AHAM" selection which results in the largest

standards for clothes washers (59 FR (section 1.1), "HWL-1" (section 1.7) and amount of hot water consumption is

56423, November 14, 1994), the "HLW-2EC" (section 1.8). The revised specified in the existing test procedure

Department said it would consider an test procedure proposed in today's ("hottest setting available" in section

energy conservation standard that notice does not use these terms. 3.2.2.2). The Department's proposal is

includes water extraction. The The Department is proposing to delete intended to remove any ambiguity

Department believes that mechanical the requirement specified in existing regarding the testing of clothes washers

water extraction in a clothes washer is test procedure section 2.2: "Disconnect equipped with this type of temperature

much more cost effective and efficient all console lights or other lighting selection. The Department welcomes

than thermal extraction in a clothes systems on the clothes washer, which comments regarding this issue.

dryer. The Department proposes today's do not consume more than 10 watts b. Test procedure revisions to include

procedures and calculations for water during the clothes washer test cycle." changes from approved Waivers.

extraction in clothes washers that would The Department believes that this The Department has granted two

be used in the standards rulemaking for requirement is burdensome. Petitions for Waivers to the clothes

consideration of water extraction. Any The Department is proposing to add a washer test procedure. Both Waivers

analysis for clothes dryer efficiency new requirement for "Agitation and were for water-heating clothes washers.

standards would account for the impact spin speed settings" (section 2.11). The New Harmony Systems Corporation

of moisture retention of clothes entering of moisture retention of clothes(entering existing test procedure does not specify (New Harmony) was issued a Waiver

the clothes dryer. agitation or spin speed settings. The (Case No. CW-001) by Decision and

The Department of Energy today Department is aware of clothes washers Order, published on April 4, 1994. (59

proposes to modify the clothes washer which allow selective agitation and spin FR 15710). Asko Incorporated (Asko)

testproedure as follows: speed settings independent of the was issued a Waiver (Case No. CW-002)

1. Title 10 CFR part 430, subpart B, normal cycle. Therefore, the proposed by Decision and Order, published on

section 430.220). test procedure specifies requirements April 4, 1994. (59 FR 15719).

sThe number of reresentative averae- for clothes washers with these features. The Department is proposing The nuber of represen ve averge- The Department is proposing to definitions for "nonwater-heating

use cycles per year is presently 416, change the symbol for density from "d" clothes washer" (section 1.11) and

based based on on Proctor Proctor and and Gamble Gamble survey survey to "p." The requirement to use the "water-heating clothes washer" (section

data from 1974-75. Nend density of water at 140°F was deleted, 1.24) to differentiate different types of Gamble survey data has indicated the so that the density of water at the clothes washers.

number of cycles consumers use on a measured temperature will be used. The Department is proposing to revise

yearly basis has decreased. Thus, the :The Department is proposing to the requirements for "electrical energy Department is proposing to revise the clarify the requirement for "maximum supply" (section 2.2) to allow for higher

representative average-use cycles to 392 fill" testing. The Department wants to voltage clothes washers. Furthermore,

per year.5 This change lowers annual ensure that testing of a clothes washer's voltage tolerance has been increased

energy use and annual energy cost. energy consumption accounts for the from approximately 1.6 percent to 2

2. Title 10 CFR part 430, subpart B, clothes washer's maximum fill percent to reduce testing burden. This

appendix J. . capability. The Department is proposing increase in tolerance will not reduce the a. General test procedure clarification to revise the test procedure to add accuracy of energy consumption testing/

The Department is proposing to add a "available on the clothes washer" after reporting.

definition for "agitator" (section 1.1). the test procedure requirement for The Department is proposing to add

The existing testprocedure mentions "maximum fill" (sections 3.2.1.2 and procedures for testing water-heating

"agitator" but, does not provide a 3.2.2.1). clothes washers which have variable

definition.. , ,The Department is aware that some temperature controls (sections 3.2.2

The Department is proposing to add a clothes washers may have similarly through 3.2.2.4). The Department is

definition for "thermostatically labeled wash/rinse temperature proposing to test water-heating clothes

controlled valves" (section 1.19). The selections, i.e., "automatic warm/cold" washers at the coldest and hottest

existing test procedure mentions and "warm/cold," on the same machine, setting available on the clothes washer

"thermostatically controlled valves" which actually provide different wash/ in addition to the existing test

but, does not provide a definition. rinse water temperatures. Under this procedure temperature settings for

The Department is proposing to scenario, the "automatic warm/cold" warm (nominally 100°F) and hot

replace the definition for a "top-loader" temperature selection has wash/rinse (nominally 140 0

F). clothes washer with "top-loader- water temperature adjusted through the The proposed temperature use factors

horizontal-axis clothes washer" (section use of thermostatically controlled for water-heating clothes washers are

1.21) and "top-loader-vertical-axis valves, whereas the "warm/cold" based on revised temperature use factors

clothes washer" (section 1.22). The temperature selection is "traditional," for a three temperature selection

in that control of temperature is based nonwater-heating clothes washer. The

year from 1986 through 1994, obtained by P & G

survey data and provided to the Department via believes that these machines are offering TUFs for a three temperature selection

letter dated September 2, 1994. additional temperature selections. nonwater-heating clothes washer are

EE-RM-94-230 COMMENT 49L

>;,.. ... 

Federal Register / Vol. 60. No. 56 / Thursday. March 23. 1995 / Proposed Rules 15335 

address issues that are independent 

from the temperature selection lock-out 

feature. 

Today's proposed amendments to the 

clothes washer test procedure do not 

alter the energy factor of any existing 

clothes washer that minimally complies 

with the existing efficiency standard. 

In the Advance Notice of Proposed 

Rulemaking for energy conservation 

standards for clothes washers (59 FR 

56423. November 14. 1994). the 

Department said it would consider an 

energy conservation standard that 

includes water extraction. The 

Department believes that mechanical 

water extraction in a clothes washer is 

much more cost effective and efficient 

than thermal extraction in a clothes 

dryer. The Department proposestoday's 

procedures and calculations for water 

extraction in clothes washers that would 

be used in the standards rulemaking for 

consideration of water extraction. Any 

analysis for clothes dryer efficiency 

standards would account for the impact 

of moisture retention of clothes entering 

the clothes dryer. 

. The Department of Energy today 

proposes to modify the clothes washer 

test procedure as follows: 

1. Title 10 CFR part 430. subpart B. 

section 430.220). 

The number of representative averageuse cycles per year is presently 416, 

based on Proctor and Gamble survey 

data from 1974-75. New Proctor and 

Gamble survey data has .indicated the 

number of cycles consumers use on a 

yearly basis has decreased. Thus. the 

Department is proposing to revise the 

representative average-use cycles to 392 

per year.s This change lowers annual 

energy use and annual energy cost. 

2. Title 10 CFR part 430. subpart B, 

appendixJ. . 

a. General test procedure clarification. 

The Department is proposing to add a 

definition for "agitator" (section 1.1). 

The eXisting test procedure mentions 

"agitator" but. does not provide a 

definition. 

The Department is proposing to add a 

definition for' 'thermostatically 

controlled valves" (section 1.19). The 

existing test procedure mentions 

"thermostatically controlled valves" 

but. does not provide a definition. 

The Department is proposing to 

replace the definition for a "top-loader" 

clothes washer with "top-Ioaderhorizontal-axis clothes washer" (section 

1.21) and "top-loader-vertical-axis 

clothes washer" (section 1.22). The 

5 392 represents the average number of cycles per 

year from 1986 through 1994, obtained by P & G 

survey data and provided to the Department vta: 

letter dated September 2, 1994. 

Department has become aware of toploading-horizontal-axis clothes washers 

which,are readily available in other 

countries. These clothes washers have 

not yet become available in the U.S. 

market; however. the Department wants 

to provide nomenclature for this type of 

clothes washer. 

The Department is proposing to delete 

the following definitions: "AHAM" 

(section 1.1). "HWL-l" (section 1.7) and 

"HLW-2EC" (section 1.8). The revised 

test procedure proposed in today's 

notice does not use these terms. 

The Department is proposing to delete 

the requirement specified in existing 

test procedure section 2.2: "Disconnect 

all console lights or other lighting 

systems on the clothes washer. which 

do not consume more than 10 watts , during the clothes washer test Cycle." 

The Department believes that this 

requirement is burdensome. 

The Department is proposiryg to add a 

new requirement for "Agitation and 

spin speed settings" (section 2.11). The 

existing test procedure does not specify 

agitation or spin speed settings. The 

Department is aware of clothes washers 

which allow selective agitation and spin 

speed settings independent of the 

normal cycle. Therefore. the proposed 

test procedure specifies requirements 

for clothes washers with these features. 

The Department is proposing to . 

change the symbol for density from "d" 

to "p." The reqUirement to use the 

density of water at 140°F was deleted. 

so that the density of water at the 

measured temperature will be used. 

The Department is proposing to 

clarify the requireJTlent for "maximum 

fiU" testing. The Department wants to 

ensure that testing of a clothes washer's 

energy consumption accounts for the 

clothes washer's maximum fill 

capability. The Department is proposing 

to revise the test procedure to add 

"available on the clothes washer" after 

the test procedure requirement for 

"maximum fill" (sections 3.2.1.2 and 

3.2.2.1). 

The Department is aware that some 

clothes washers may have similarly 

labeled wash/rinse temperature 

selections. i.e .. "automatic warm/cold" 

and "warm/cold." on the same machine, 

which actually provide different wash/ 

rinse water temperatures. Under this 

scenario, the "automatic warm/cold" 

temperature selection has wash/rinse 

water temperature adjusted through the 

use of thermostatically controlled 

valves. whereas the "warm/cold" 

temperature selection is "traditional." 

in that control of temperature is based 

on preset orifices. The Department 

believes that these machines are offering 

additional temperature selections. 

Therefore. instead of developing 

additional Temperature Utilization 

Factors. the Department is proposing to 

require the use of the temperature 

selection whiCh results in the largest 

amount of hot water consumption for 

the energy consumption calculations 

(section 4.1.1.1). The Department 

believes the use of the temperature 

selection which results in the largest 

amount of hot water consumption is 

specified in the existing test procedure 

("hottest setting available" in section 

3.2.2.2). The Department's proposal is 

intended to remove any ambiguity 

regarding the testing of clothes washers 

eqUipped with this type of temperature 

selection. The Department welcomes 

comments regarding this issue. 

b. Test procedure revisions to include 

changes from approved Waivers. ' 

The Department has granted two 

Petitions for Waivers to the clothes 

washer test procedure. Both Waivers 

were for water-heating clothes washers. 

New Harmony Systems Corporation 

(New Harmony) was issued a Waiver 

(Case No. CW-OOl) by DeciSion and 

Order. published on April 4. 1994.(59 

FR 15710). Asko Incorporated (Asko) 

was issued a Waiver (Case No. CW-002) 

by Decision and Order. published on 

Apr1l4. 1994. (59 FR 15719). 

The Department is proposing 

definitions for "nonwater-heating 

clothes washer" (section 1.11) and 

"water-heating clothes washer" (section 

1.24) to differentiate different types of 

clothes washers. 

The Department is, proposing to revise 

the requirements for "electrical energy 

supply" (section 2.2) to allow for higher 

voltage clothes washers. Furthermore. 

voltage tolerance has been increased 

from approximately 1.6 percent to 2 

percent to reduce testing btirden. This 

increase in tolerance will not reduce the , accuracy of energy consumption testing! 

re~orting. 

The Departmentis proposing to add 

procedures for testing water-heating 

clothes washers which have variable 

temperature controls (sections 3.2.2 

through 3.2.2.4). The Department is 

proposing to test water-heating clothes 

washers at the coldest and hottest 

setting available on the clothes washer 

in addition to the existing test 

procedure temperature settings for 

warm (nominally 100°F) and hot 

(nominally 140°F). , The proposed temperature use factors 

for water-heating clothes washers are 

based on revised temperature use factors 

for a three temperature selection 

nonwater-heating clothes washer. The 

Department believes that the existing 

TUFs for a three temperature selection 

nonwater-heating clothes washer are 
15336 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

appropriate for a water-heating clothes consumption using a 3 pound (1.36 kg) regarding the definition and calculation

washer, except that some consumers test load. The Department believes that of the moisture removal energy. The

will occasionally choose to use a consumers will occasionally wash loads Department is proposing a value of 0.5

temperature setting higher than the which are larger than 7 pounds (3.18 kg) Kwh/lb as the energy efficiency of a

"hot" setting'since it is available to and will also wash loads which are representative clothes dryer to remove

them. The existing temperature use smaller than 3 pounds (1.36 kg). This moisture. The Department also is

factors for "cold/cold" (15 percent), provision will allow for testing of interested in comments as to the

"warm/warm or warm/cold" (5.5 clothes washers that may have this validity and usage of this value,

percent) and "hot/warm or hot/cold" feature. The Department welcomes The Department is interested in

(30 percent) have been split into four comments on this proposed provision. developing a new energy descriptor,

TUFs, one of 15 percent for the c. Water consumption and extraction called a modified energy factor, which

"coldest" setting, one of 55 percent for testing. ' will include moisture removal energy,

the "warm" setting, one of 25 percent The Department is concerned about for possible future standard use. This

for "hot" and one of 5 percent for the water conservation and wishes to new descriptor will provide a means of

"hottest" setting. The Department does provide fora procedure to determine the determining and comparing the entire

not have data regarding the 5 percent water consumption of clothes washers. energy consumption of clothes washers.

value, but is proposing to use it as The Department believes, consistent Therefore, the Department is proposing

originally proposed by New Harmony. with the Energy Policy Act of 1992, Pub. to add a definition for "modified energy

The Department welcomes comments L. 102-486, that water conservation is factor" (section 1.9). The modified

on this proposal. important, and a need may exist to energy factor equals the ratio of the

The Department is proposing tighter determine actual water use. capacity of the clothes washer divided

tolerances for the supply water Therefore, the Department is by the total energy, which consists of

temperature, and the "warm" and "hot" proposing to add definitions, testing the mechanical, hot water and moisture

settings for water-heating clothes procedures, and calculations regarding removal energy. The calculations for the

washers as compared to nonwater- water use. Additionally, for those water modified energy factor are provided in

heating clothes washers. The or sewage utilities wishing to include the proposed test procedure section 4.4.

Department is proposing that the supply particular clotheswashers in rebate The Department requests comments,

water temperature be set at "a minimum programs, the DOE test procedure data, and other relevant information

of 55°F (12.8°C) and a maximum of 60°F would provide a standardized means of regarding the definition and calculation

(15.6°C)." The "warm" temperature testing for water consumption. of this new energy descriptor.

shall be set at "a minimum of 100 0F The Department is proposing to add a

(37.8°C) and a maximum of 1050F definition for a "Water consumption D. Reporting Requirements

(40.60C)" and the "hot" temperature factor" (section 1.23); Calculations for The Department is proposing to revise

shall be set at "a minimum of 1400

F the water consumption factor are the reporting requirements for clothes

(600C) and a maximum of 145 0F provided insection 4.3. The water washers, dishwashers and clothes

(62.8 0C)." These tighter tolerances are consumption factor is the ratio of the dryers. The present regulations do not

required for water-heating clothes clothes washer capacity divided by the require the reporting of the energy

washers to reduce variability in energy , weighted per-cycle water consumption. factors for these products. Prior to the

consumption testing/reporting and to The weighted per-cycle water May 14, 1991 final rule for clothes

ensure that a minimum temperature rise consumption is the actual weighted washers, dishwashers and clothes

is tested. The temperature tolerance and volume of water that a particular clothes dryers, there were no performance

minimum temperature rise issues are washer consumes. This measurement standards for these products. Now, since

unique to a water-heating clothes could be used to estimate water there are performance standards for

washer because the energy to raise the consumption on an annual basis. The these products, the Department is

water temperature is measured from Department welcomes comments on this proposing to include certification

electrical consumption versus being proposal. reporting Section 430.62(a)(2).

calculated as it is for nonwater-heating The Department is concerned about

clothes washers. water extraction in the clothes washers' . Environmental Review

Since the issue of machine-controlled final spin. The Department believes that Pursuant to section 7(a) of the Federal

water fill capability has been raised by mechanical extraction in a clothes Energy Administration Act of 1974

the Asko Waiver, the Department wants washer is more efficient than thermal (Pub. L. 93-275, 15 U.S.C. 766(a)), a

to provide a provision for the possibility extraction in a clothes dryer. Therefore, copy of this notice was submitted to the

of any type of clothes washer having the Department wishes to provide for a Administrator of the Environmental

this feature. Thus, the Department is procedure measuring the water Protection Agency for the

proposing to add the definition of extraction in clothes washers. The Administrator's comments concerning

"machine-controlled water fill Department is proposing to add a the impacts of this proposal on the

capability" (section 1.7) to the test definition for "moisture removal quality of the environment.

procedure. In addition, the Department energy" (section 1.10). Moisture DOE has concluded that this proposed

is proposing a revision to the "top- removal energy equals the weight of the rule falls into a class of actions

loader-vertical-axis clothes washer" residual water in the test load at the (categorical exclusion A5) that are

section (section 2.8.1) to require the use completion of the clothes washer cycle categorically excluded from NEPA

of a test.load for clothes washers with multiplied by the nominal energy review because they would not

a machine-controlled water fill needed to remove moisture using a individually or cumulatively have a

capability feature. Therefore, a clothes representative clothes dryer efficiency. significant impact on the human

washer equipped with machined- The calculations for moisture removal environment, as determined by DOE's

controlled water fill capability will be energy are provided in the proposed test regulations (10 CFR part 1021, Subpart

tested for maximum fill energy procedure section 4.2. In today's notice, D) implementing the National

consumption using a 7 pound (3.18 kg) the Department requests comments, Environmental Policy Act of 1969 (42

test load and for minimum fill energy data, and other relevant information U.S.C. 4321, 4331-35, 4341-47 (1976)).

EE-RM-94-230 COMMENT 49L

15336 Federal,' Register / Vol. 60,' No.,' 56 / Thursday, March 23, 1995, / Proposed Rules 

appropriate for a water-heating clothes 

washer, except that. some consumers 

will occasionally choose to use a 

temperature setting higher than the 

, "hot" setting'since it is available to 

them. The existing temperature use 

factors for "cold/cold',' (15 percent), 

"warm/warm or warm/cold" (5,5 

percent) and "hot/warm or hot/cold~' 

(30 percent) have been split into four 

TUFs, one of 15 percent for the 

"coldest" setting, one of ~5 percent for 

the "warm",setting, one of 25 percent 

for "hot" and one of 5 percent for the 

"hottest" setting. The Department does 

not have data regarding the 5 percent 

value, but is proposing to use it as 

originally proposed by New Harmony. 

The Departrrlent welcomes 'comments 

on this proposal. , The Department is proposing tighter 

tolerances for the supply water ' 

temperature, and the "warm" and "hot" 

settings for water-heating clothes 

washers as compared to nonwaterheating clothes washers. The 

Department i~ proposing that the supply, 

water temperature be set at "a minimum 

of 55°F (12.8°C) and a maximum of6QoF 

(l5.6°C)." The "warm" temperature 

shall be set at "a minimum of lOO°F 

(37.8°C) and a maximum of lO5°F 

(40.6°C)" and the "hot" temperature 

shall be set at "a minimum of 140°F 

(60°C) and a maximum of 145°F 

(62.8°C)." These tighter tolerances are 

required for water-heating clothes 

washers to reduce variability in energy 

consumption testing/reporting and to 

ensure that a minimum temperature rise 

is tested: The temperature tolerance and 

minimum temperature rise issues are 

unique to a water-heating clothes 

washer because the 'energy to raise the 

water temperature is measured from ' 

electrical consumption versus being , 

calculated as it is for nonwater-heating 

clothes washers. 

Since the issue of machine-controlled ' 

water fill capability has been raised by 

the Asko Waiver, the Department wants 

to provide a prOvision for the possibility , 

of any type of clothes washer having 

this feature. Thus, the Department is 

proposing to add the definition of 

"machine':controlled water fill 

capability" (section 1. 7) to the test 

procedure. In addition, the Department 

is proposing a revision to the "top': 

loader-vertical-axis clothes washer" 

section (section 2.8.1) to require 'the use 

of a test.load for clothes washers with 

a machine-controlled water fill 

capability feature. Therefore, a clotl1es 

washer equipped with machinedcontrolled water fill capability will be 

tested for maximum fill energy 

consutnptionusing a 7 pound (3.18 kg) 

test load and for minimum fill energy 

consumption using a 3 pound (1.36 kg) regarding the definition and calculation 

test load. The Department believes that of the 'moisture removal energy. The 

conSumers will occasionally wash loads Department is proposing a value of 0.5 

which are larger than 7 pounds (3.18 kg) Kwhllb as the energy effiCiency of a 

, and will also wash loads which are representative clothes dryer'to remove 

smaller than 3 pounds (1.36 kg). This moisture. The Department also is 

prOVision will allow for testing of interested in comments as to the 

clothes washers that may haVe this _ validity and usage of this value. 

feature. The Department welcomes The Department is interested in 

comments on this proposed proviSion. developing a new energy descriptor, 

c. Water consumption and extraction called a modified energy factor, which 

testing. \' , will include moisture removal energy, 

The Department is concerned about ' for possible future standard use; This 

water conservation and wishes to new descriptor will provide a means of 

provide fora procedure to determine the determining arid cbmpartngthe entire 

water consumption of clothes washers. energy consumption of do~es washers. 

The Department believes, consistent Therefore, the Department is proposing 

with the Energy Policy Act of 1992, Pub.' to add a definition for "modified energy 

L. 102-486, that water conservation is factor" (section 1.9). The modified 

important, and a need may exist to energy factor equals the ratio of the 

determine actual water use. , capacity of the clothes washer divided , Therefore, the Department is by thetotal energy, which consists of 

proposing to add definitions, testing the mechanical, hot water and moisture 

procedures, and calcuhitions regarding removal energy. The calculations for the 

water use. Additionally, forthose water modified energy factor are provided in ' 

or sewage utilities wishing to include the proposed test procedure section 4.4. ' 

particular clothes washers in reb3te The Department requests comments, 

programs, the DOE test procedure data, and other releVant information 

would provide a standardized means of regarding the definition and calcuhltion 

testing for water consumption. ,of this new energy descriptor. " 

The Department is proposing to add a 

definition for a "Water consumption D. ReportingRequirements 

fattor" (s'ection 1.23), Calculations for The Department is proposing to revise 

the water consumption factor are the reporting reqUirements for clothes 

provided in,section 4.3. The water washers, dishwashers and clothes 

consumption factor is the ratio of the dryers. The present regulations do not 

clothes washer capacity divided by the require the reporting of the energy 

, weighted per~cycle water' q>nsumption. factors for these products. Prior to the 

The weighted per-cycle water May 14, 1991 final rule for clothes 

consumption is the actual weighted washers, dishwashers and clothes 

volume of water that a particular clothes dryers, there were no performance 

washer consumes. This measurement standards for these products. Now, since 

could be used to estimate water there are performance standards for ' 

consumption on an annual basis. The these products, the, Department is 

Department welcomes comments on this' proposing to include certification 

proposal. " ' ,reporting. Section 430.62(a) (2). ' , The Department is concerned about 

water extraction in the clothes washers' m,Envlronmental Review 

final spin. The Department believes that Pursuant to section 7(a) of the Federal 

mechanicaJ. extraction in a clothes' Energy Administration Act of 1 ~7 4 

washer is more efficient than thermal (pub. L. 93-275, 15U.S.C. 766(a», a 

extraction in a clothes dryer. Therefore, copy of this notice was submitted to the 

the Department wishes to provide for a Administrator of the Environmental 

procedure measuring the water ,'Protection Agency for the , 

extraction in clothes washers. The Administrator's comments concerning 

Department is proposing to add a the impacts of this proposal on the 

definition for '!moisture removal quality of the environment. 

energy" (section 1.10). Moisture DOE has concluded that this proposed 

removal energy equals the weight of the rule falls into a class of actions 

" residual water in the test load at the (categorical exclusion A5) that are 

completion 'of the clothes washer cycle categorically excluded from NEP A 

multiplied by the nominal energy review because they would nOt 

needed to remove moisture using a individually or cumulatively have a 

representative clothes dryer efficiency. significant impact on the human 

'f.he calculations for moisture removal environment. as determined by DOE's 

energy are provided in the proposed test regulations'(10 CFR Part 1921, Subpart 

procedure section 4,,2. In today's notice,D) implementing the National . 

the Department requests cominents, Environmental Policy Act of 1969 (42 

data, and other relevant information U.S.C. 4321, 4331-35, 4341-47 (1976». 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15337

Therefore, this proposed rule does not substantial direct effects, the Executive 32(b) regarding the manner of public

require an environmental impact Order 12612 requires the preparation of participation.

statement or an environmental a Federalism assessment to be used in As required by section 32(c), DOE will

assessment pursuant to NEPA. decisions by senior policymakers in consult with the Attorney General and

IV Reg *ulator R *promulgating e or implementing the the Chairman of the Federal Trade

IV. Regulatory eview regulation. Commission concerning the impact of

Today's regulatory proposal has been DOE has identified a substantial these standards on competition, prior to

determined not to be a "significant direct effect that today's proposed rule prescribing final test procedures.

regulatory action" under Executive would have on State governments. It IX Paerwork ReductionAct Review

Order 12866, "Regulatory Planning and would initially preempt inconsistent

Review," (58 FR 51735, October 4, State regulations. However, DOE has No new information or recordkeeping

1993). Accordingly, today's action was concluded that such effect is not requirements are imposed by this

not subject to review under the sufficient to warrant preparation of a rulemaking. Accordingly, no OMB

Executive Order by the Office of federalism assessment for the following clearance is required under the

Information and Regulatory Affairs. reason: the Act provided for subsequent Paperwork Reduction Act (44 U.S.C.

V. Regulatory Flexibility Review State petitions for exemption. Thus, a 3501 et seq.).

V.RegulatoyFlexiby determination as to whether a State law X. Review Under Executive Order

The proposed rule has been reviewed prevails must be made on a case-by-case 12778

under the Regulatory Flexibility Act, basis using criteria set forth in the Act.

Pub. L. 96-354 (42 U.S.C. 601-612) When DOE receives such a petition, itcton 2 of Executive Order 12778

which requires preparation of a will then be appropriate to consider instructs each agency to adhere to

regulatory flexibility analysis for any preparing a federalism assessment certain requirements in promulgating

regulation that will have a significant consistent with the criteria in the Act. new regulations and reviewing existing

economic impact on a substantial o regulations. These requirements, set

number of small entities, i.e., small VIII. Review Under os forth in section32 2(a) and (b) (2), include

businesses and small government Federal Energy Administration eliminating drafting errors and needless businesses and small government Authorization Act ambiguity, drafting the regulations to jurisdictions. The proposed rule affects Authorization Actambiguity drafting the regulations to

manufacturers of water heaters: kitchen The test procedure amendments minimize litigation, providing clear and

ranges, ovens, and microwave ovens; proposed today incorporate the certain legal standards for affected

and clothes washers. The test International Electrotechnical conduct, and promoting simplification

procedures would not have significant Commission Publication 705, and and burden reduction. Agencies are also

economic impact, but rather, would Amendment 2-1993, "Methods for instructed to make every reasonable

provide common testing methods. DOE Measuring the Performance of effort to ensure that the regulation

accordingly certifies that the proposed Microwave Ovens for Household and specifies clearly any preemptive effect,

rule would not, if promulgated, have a Similar Purposes," section 4, Paragraph effect on existing Federal law or

significant economic impact on a 12 "Microwave Power Output regulation, and retroactive effect;

substantial number of small entities and Measurement," Paragraph 13 "Electrical describes any administrative

that preparation of a regulatory Power Output Measurement," and proceedings to be available prior to

flexibility analysis is not warranted. Paragraph 14 "Efficiency" to determine judicial review and any provisions for

the output power and efficiency for the exhaustion of such administrative

VI. "Takings" Assessment Review microwave ovens. proceedings; and defines key terms. The

It has been determined pursuant to Pursuant to section 301 of the DOE certifies that today's proposed rule

Executive Order 12630 (52 FR 8859, Department of Energy Organization Act meets the requirements of sections 2(a)

March 18, 1988) that this proposed (Pub. L. 95-91), DOE is required to and (b) (2) of Executive Order 12778.

regulation, if adopted, would not result comply with section 32 of the Federal XI. Public Comment Procedures

in any takings which might require Energy Authorization Act of 1974 (15

compensation under'the Fifth U.S.C. 788), which imposes certain A. Written Comment Procedures

Amendment to the United States requirements where a proposed rule Interested persons are invited to

Constitution. contains commercial standards or participate in the rulemaking by

The Department believes that test authorizes or requires the use of such submitting data, comments, or

procedures implementing a long- standards. information with respect to the

established statutory mandate in a The findings required of DOE by proposed test procedures set forth in

manner calculated to minimize adverse section 32 of the Act serve to alert the this notice to the address indicated at

economic impacts does not constitute a public and DOE regarding the use and the beginning of the notice.

"taking" of private property. Thus, background of commercial standards in Comments should be identified both

testing under the appliance standards a proposal and through the rulemaking on the envelope and on the documents

program does not invoke the provisions process. They allow interested persons as "Water Heaters; Kitchen Ranges,

of E.O. 12630. to make known their views regarding Ovens, and Microwave Ovens; and

VII. Federalism Reviw the appropriateness of the use of any Clothes Washers Test Procedures,

particular commercial standard in a Docket No. EE-RM-94-230." Ten.(10)

Executive Order 12612 (52 FR 41685, proposed rulemaking. copies are requested to be submitted. In

October 30, 1987) requires that DOE has evaluated the promulgation addition, the Department requests that

regulations or rules be reviewed for any of International Electrotechnical an electronic copy (31/2" diskette) of the

substantial direct effects on States, on Commission Publication 705, and comments on WordPerfectTM 5.1 be

the relationship between the Federal Amendment 2-1993, in light of the provided. All submittal received by the

Government and the States, or on the public participation criteria of section date specified at the beginning of this

distribution of power and 32(b). The Department is unable to notice will be considered by the

responsibilities among various levels of conclude whether development of these Department of Energy before final action

Government. If there are sufficient standards fully complied with section is taken on the proposed amendments.

EE-RM-94-230 COMMENT 49L

Federal Register I Vol. 60. No. 56 I Thursday. March 23. 1995 I Proposed Rules 15337 

Therefore. this proposed rule does not 

require an environmental impact 

statement or an environmental 

assessment pursuant to NEP A. 

IV. Regulatory Review 

Today's regulatory proposal has been 

determined not to be a "significant 

regulatory action" under Executive 

Order 12866 .. 'Regulatory Planning and 

Review." (58 FR 51735. October 4. 

1993). Accordingly. today's action was 

not subject to review under the 

Executive Order by the Office of 

Information and Regulatory Affairs. 

V. Regulatory Flexibility Review 

The proposed rule has been reviewed 

under the Regulatory Flexibility Act. 

Pub. L. 96-354 (42 U.S.C. 601-612) 

which requires preparation of a 

regulatory flexibility analysis for any 

regulation that will have a sigriificant 

economic impact on a substantial 

number of small entities. i.e .. small 

businesses and small government 

jurisdictions. The proposed rule affects 

manufacturers of water heaters: kitchen 

ranges. ovens. and microwave ovens: 

and clothes washers. The test 

procedures would not have significant 

economic impact. but rather. would 

provide common testing methods. DOE 

accordingly certifies that the proposed 

rule would not. if promulgated. have a 

significant economic impact on a . 

substantial number of small entities and 

that preparation of a regulatory 

flexibility analysis is not warranted. 

VI. "Takings" Assessment Review 

It has been determined pursuant to 

Executive Order 12630 (52 FR 8859. 

March 18. 1988) that this proposed 

regulation. if adopted. would not result 

in any takings which might reqUire 

compensation under'the Fifth 

Amendment to the United States 

Constitution. 

The Department believes that test 

procedures implementing a longestablished statutory mandate in a 

manner calculated to minimize adverse 

economic impacts does not constitute a 

"taking" of private property. Thus. 

testing under the appliance standards 

program does not invoke the provisions 

ofE.O.12630. 

VII. Federalism Review 

Executive Order 12612 (52 FR 41685. 

October 30. 1987) requires that 

regulations or rules be reviewed for any 

substantial direct effects on States. on 

the relationship between the Federal 

Government and the States. or on the 

distribution of power and 

responsibilities among various levels of 

Government. If there are sufficient 

substantial direct effects. tile Executive 

Order 12612 requires the preparation of 

a Federalism assessment to be used in 

decisions by senior policymakers in 

promulgating or implementing the 

regulation. 

DOE has identified a substantial 

direct effect that today's proposed rule 

would have on State governments. It 

would initially preempt inconsistent 

State regulations. However. DOE has 

concluded that such effect is not 

sufficient to warrant preparation of a 

federalism assessment for the following 

reason: the Act provided for subsequent 

State petitions for exemption. Thus. a 

determination as to whether a State law 

prevails must be made on a case-by-case 

basis using criteria set forth in the Act. 

When DOE receives such a petition. it 

will then be appropriate to consider. 

preparing a federalism assessment 

consistent with the criteria in the Act. 

VIII. Review Under Section 32 of the 

Federal Energy Administration 

Authorization Act 

The test procedure amendments . 

proposed today incorporate the 

International Electrotechnical 

Commission Publication 705. and 

Amendment 2-1993. "Methods for 

Measuring the Performance of 

Microwave Ovens for Household and 

Similar Purposes." section 4. Paragraph 

12 "Microwave Power Output 

Measurement." Paragraph 13 "Electrical 

Power Output Measurement." and 

Paragraph 14 "Efficiency" to determine 

the output power and efficiency for 

microwave ovens. 

Pursuant to section 301 of the 

Department of Energy Organization Act 

(pub. L. 95-91). DOE is required to 

comply with section 32 of the Federal 

Energy Authorization Act of 1974 (15 

U.S.C. 788). which imposes certain . requirements where a proposed rule 

contains commercial standards or 

authorizes or requires the use of such 

standards. 

The findings required of DOE by 

section 32 of the Act serve to alert the 

public and DOE regarding the use and 

background of commercial standards in 

a proposal and through the rulemaking 

process. They allow interested persons 

to make known their views regarding 

the appropriateness of the use of any 

particular commercial standard in a 

proposed rulemaking. 

DOE has evaluated the promulgation 

of International Electrotechnical 

Commission Publication 705. and 

Amendment 2-1993. in light of the 

public participation criteria of section 

32(b). The Department is unable to 

conclude whether development of these 

standards fully complied with section 

32(b) regarding the manner of public 

participation . . As required by section 32(c). DOE will 

consult with the Attorney General and 

the Chairman of the Federal Trade 

Commission concerning the impact of 

these standards on competition. prior to 

prescribing final test procedures. 

IX. Paperwork ReductionAct Review 

No new information or recordkeeping 

requirements are imposed by this 

rulemaking. Accordingly. no OMB 

clearance is required under the 

Paperwork Reduction Act (44 U.S.C. 

3501 et seq.). 

X. Review Under Executive Order 

12778 

Section 2 of Executive Order 12778 

instructs each agency to adhere .to 

certain requirements in promulgating 

new regulations and reviewing existing 

regulations. These requirements. set 

forth in sections 2(a) and (b) (2). include 

eliminating drafting errors and needless 

ambiguity. drafting the regulations to 

minimize litigation. providing clear and 

certain legal standards for affected· 

conduct. and promoting simplification 

and burden reduction. Agencies are also 

instructed to make every reasonable 

effort to ensure that the regulation 

specifies clearly any preemptive effect. 

effect on existing Federal law or 

. regulation. and retroactive effect; 

describes any admini~trative 

proceedings to be available prior to 

judicial review and any provisions for 

the exhaustion of such administrative 

proceedings; and defines key terms. The 

DOE certifies that today's proposed rule 

meets the requirements of sections 2(a) 

and (b)(2) of Executive Order 12778. 

XI. Public Comment Procedures 

A. Written Comment Procedures 

Interested persons are invited to . participate in the rulemaking by 

submitting data. comments. or 

information with respect to the 

proposed test procedures set forth in 

this notice to the address indicated at 

the beginning of the notice. 

Comments should be identified both 

on the envelope and on the documents 

as "Water Heaters; Kitchen Ranges. 

Ovens. and Microwave Ovens; and 

Clothes Washers Test Procedures. 

Docket No. EE~RM-94-230." Ten. (1 0) 

copies are requested to be submitted. In 

addition. the Department requests that 

an electronic copy (3 112" diskette) of the 

comments on WordPerfectTM 5.1 be 

prOVided. All submittal received by the 

date specified at the beginning of this 

notice will be considered by the 

Department of Energy before final action 

is taken on the proposed amendments. 
15338 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

Pursuant to the provisions of 10 CFR an interest, is an appropriate C. Issues for Public Comment

1004.11, any person submitting spokesperson, and give a telephoneThe Department of Energy is

information which he or she believes to number where he or she may be nterested in receiving comments and

be confidential and exempt by law from contacteddataonce the aura and

public disclosure should submit one ' Each person selected to be heard is workability of thesetest procedures. complete copy of the document and ten requested to submit an advance copy of wor ility oDefarthese ts p ees

(10) (10) copies, copies, Ifpossiblefromwhich if possible, from which the the their statement prior to the hearing nas as discussion lso te ertmen on improvements or information believed to be confidential indicated at the beginning of this notice. d ssion on iproveets or

has been deleted. The Department of In the event any persons wishing to alratiDves to the snaperesohe In

Energy will make its own determination testify cannot meet this requireqment, partcur, is inteested in

with regard to the confidential status of that person may make alternative gathering comments on the following:

the information and treat it according to arrangements with the Office of The appropriateness of including

its determination. Hearings and Dockets in advance by so test procedures fo electric and oil instantaneous water heaters, Factors of interest to DOE when indicating in the letter requesting to st eowate eate

evaluating requests to treat as make ' ar oral presentation. * The impacts on manufacturer(s) as

evaluating requests treatasmake to an oaprsa result of extending coverage of the confidential information that has been 2. Conduct of Hearing existing minimum energy efficiency submitted include: (1) A description of The Department of e E s n r eserv standards for electric and oil-fired the items; (2) an indication as to The Department of Energy reserves standards for eectric and oil-fired

whether and why such items are the right'to select the persons to be instantaneous water heaters.

customarily treated as confidential heard at the hearing, to schedule the · The appropriateness of including

within the industry; (3) whether the respective presentations, and to the draw schedule and draw rate of the

information is generally known by or establish the procedures governing the American National Standards Institute/

available from other sources; (4) conduct of the hearing. The length of American Society of Heating,

whether the information has previously 1 whether ^each presentation is limited to twenty Refrigerating and Air Conditioning the information has previously been made available to others without (20) minutes. Engineers Standard 118.2-1993 for been made availabe to others witho A DOE official will be designated to storage water heaters with rated storage

obligation concerning its preside at the hearing. The hearing will capacities less than 20 gallons (76 confidentiality (5) an explanation of the not be a judicial or an evidentiary-type liters).

competitive injury to the submitting hearing, but will be conducted in * The impacts on manufacturer(s) as

person which would result from public accordance with 5 U.S.C. 553 and a result of extending coverage of the disclosure; (6) an indication as to when section 336 of the Act. At the existing minimum energy efficiency

such information might lose its ·conclusion of all initial oral statements standards for storage-type water heaters

confidential character due to the at each day of the hearing, each person of less than 20 gallons (76 liters).

passage of time; and (7) why disclosure who has made an oral statement will be · The appropriateness of the

of the information would be contrary to given the opportunity to make a rebuttal proposed definition, first hour rating, the public interest. statement, subject to time limitations. for instantaneous and storage water

B. Public Hearing The rebuttal statement will be given in heaters.

the order in which the initial statements * The appropriateness of the

1. Procedures for Submitting Requests to were made. The official conducting the proposed first hour rating test method

Speak hearing will accept additional for storage tank-type water heaters.

The time and place of the public comments or questions from those * The appropriateness of a first hour

hearing are indicated' at the beginning of attending, as time permits. Any rating which mightgive unrealistic

this notice. The Department of Energy interested person may submit, to the results for water heaters containing

invites any person who has an interest presiding official, written questions to thermal compensating dip tubes.or

in today's proposed rule, or who is a be asked of any person making a internal mixing valves.

representative of a group or class of statement at the hearing. The presiding · The appropriateness of the

persons that has an interest in the official will determine whether the proposed definitions: heat pump water

proposed test procedures, to make a question is relevant, and whether time heater, add-on heat pump water heater,

written request for an opportunity to limitations permit it to be presented for integral heat pump water heater, solar

make an oral presentation. Such answer. water heater, and heat pump water

requests should be directed to the Any further procedural rules heater storage tank.

address indicated at the beginning of regarding proper conduct of the hearing * The adequateness of the test

this notice. Requests may be hand will be announced by the presiding provisions for heat pump water heaters

delivered to such address between the official. regarding the usage of backup electric

hours of 8 a.m. and 4 p.m., Monday A transcript of the hearing will be resistance element(s).

through Friday, except Federal holidays. made, and the entire record of this * The appropriateness of the'

Requests should be labeled "Test rulemaking, including the transcript, proposed test energy method to

Procedure for Water Heaters; Kitchen will be retained by DOE and made determine the output energy for

Ranges, Ovens and Microwave Ovens; available for inspection at the DOE microwave ovens.

and Clothes Washers; and Reporting Freedom of Information Reading Room, * The appropriateness to incorporate

Requirements for Clothes Washers, U.S. Department of Energy, Forrestal by reference the International

Clothes Dryers, and Dishwashers, Building, Room 1E-190, 1000 Electrotechnical Commission

Docket No. EE-RM-94-230," both on Independence Avenue, SW., Publication 705, and Amendment 2-

the document and on the envelope. Washington, DC 20585, (202) 586-6020, 1993, "Methods for Measuring the

The person making the request should between the hours of 9 a.m. and 4 p.m., Performance of Microwave Ovens for

briefly describe the interest concerned Monday through Friday, except Federal, Household and Similar Purposes,"

and state why he or she, either holidays. Any person may purchase a section 4, Paragraph 12 "Microwave

individually or as a representative of a copy of the transcript from the Power Output Measurement," Paragraph

group or class of persons that have such transcribing reporter. 13 "Electrical Power Output

EE-RM-94-230 COMMENT 49L

, 

15338 Federal Register / VQI. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 

Pursuant to the provisions of 10 CFR 

1004.11, any person submitting 

information which he or she believes to 

· beconfideritial and exempt by law from 

public disclosure should submit one' 

complete copy of the document and ten 

· (10) coples;'ifpossible, from which the ' 

information believed to be confidential 

has been deleted. The Department of 

Energy will make its own determination 

, with regard to the confidential status of 

the information and treat it according to 

its determination. 

Factors of interest to DOE when 

evaluating requests to 'treat as . 

· confidEmtialinformation that has been 

submittea include: (1) A description of 

. the items; (2) an indication as to 

whether arid why $uch items.are 

customarily treated as confidential 

within the industty; (3) whether the 

information is generally known by or 

available from other sources; (4) 

whether the inf~rmation has previously 

been made available to others without 

obligation concerning its 

confidentiality; (5) an,explanation of the 

competitive iryury to the submitting 

person which would result from public 

disclosure; (6) an indication as to when 

such information might lose its 

confidential character due to the 

passage of time; and (7) why disclosure 

.of the information would be contrary to 

the public interest. 

B. Public Hearing 

1. 'Procedures for Submitting Requests to 

Speak 

The time and place of the public 

hearing are indicated' at the beginning of 

· this notice. The Department of Energy 

invites any person who has an interest 

in tOday's proposed rule, or who is a 

. representative of a group or class of 

persons that has an irtterest in the 

proposed test procedures, to make a 

Written request for an opportunity to 

make an oral presentation. Such 

requests should be directed to the 

address indicated at the beginning of 

this notice. Requests may be hand 

delivered to such address between the 

. hours, of 8 a.m. and 4 p.m., Monday 

through Friday. except Federal holidays. 

Requests should be labeled "Test 

Procedure for Water Heaters; Kitchen 

Ranges. Ovens and Microwave Ovens; 

and Clothes Washers; and Reporting 

Requirements for Clothes Washers, 

Clothes Dryers, and Dishwashers. 

Docket No. EE-RM-94-230." both .on 

the document and on the envelope. .' 

The persOn making the request should 

. briefIy describe the interest concerned 

and state why he or she, either 

individually or, as a representative of a 

group or class of persons that have such 

an intereSt, is an appropriate 

spokesperson,-and'give a telephone 

number where he or she may be 

Contacted: ' 

Each person selected to be heard is 

requested to sub1l'it an advance c~py of 

their statement prior to the hearing as 

indicated at the beginning of this notice. 

'lnthe event any persons wishing to 

testify cannotmeet this requirement, 

that person may make alternative 

arrangements with the Office of 

Hearings and Dockets in advance by so 

indicating in the letter requesting to 

make ari oral presentation .. 

2. Conduct of Hearing 

The Department of Energy reserves 

the right' to select the persons to be 

heard at the hearing. to schedule the 

· respective presentations. and to 

establish the procedures governing the 

conduct of the hearing. The length of 

~ch presentation is limited to twenty 

(20) minutes. , · A DOE official will be designated to 

preside at the ,hearing. The hearing will. 

not be ajudidal or an evidentiary-type 

hearing. but will be conducted in 

accordance with 5 U.S.C. 553 and 

section 336 of the Act. At the 

· conclusion of all initial oral statements 

at each day of the hearing. each person 

who has made an oral statement will be 

given the opportunity to make a rebuttal 

statement. subject to time limitations. 

The rebuttal statement will be given in 

the order in which the initial 'statements 

were made. The official conducting the 

hearing will accept additional 

comments or questions from those. 

attending, as time permits. Any 

interested person may submit, to the 

. presiding official, written questions to 

be asked of any person making a 

statement at the hearing. The presiding 

official will determine whether the 

question is relevant, and whether time 

limitations permit it to be presented for 

answer. 

Any fUrther procedural rules 

. regarding proper conduct of the hearing. 

will be anl10unced by th~ presiding 

official. '. . A transcript of the hearing will be 

made. and the entire record of this 

rulemaking. including the transcript. 

will be retained by DOE and made 

available for inspection at the DOE 

Freedom of Information Reading Room. 

U.~. Department of Energy, Forrestal 

Building. Room lE-190, 1000 

Independence Avenue, SW .• 

Washington. DC 20585. (202) 586-6020. 

between the hours of 9 a.m. and 4 p.m .. . Monday through Friday, excep~Federal., 

holidays. Any person may purchase a 

copy of the transcript from the 

· transcribing reporter. 

C. Issues for Public Comment 

The Department of Energy is 

interested in receiving comments arid 

data 'concerning the acCuracy and 

workablllty of these test procedures. 

Also, the Department welcomes 

discussion on improvements or 

· alternatives to these approaches. In " 

particular, DOE is interested in 

gathering comments on the following: 

• The appropriateness of including 

test procedures for electric and oll 

instantaneous water heaterS. 

, . • The impacts on manufacturer(s) as 

a result of extending coverage of the . . 

existing minimum energy efficiency 

standards for electric and oil-fired 

instantaneous water heaters. 

• The appropriateness of including 

the draw schedule and draw rate of the 

American National Standards Institute/ 

American Society of Heating, 

Refrigerating and Air Conditioning 

Engineers Standard 118.2-1993 for 

storage water heaters with rated storage 

capacities less than 20 gallons (76 . 

liters). 

• The impactS on manufacturer(s) as 

a result of extending coverage of the 

existing minimum energy efficiency 

standard$ for storage-type water heaters 

of less than 20 gallons (76liters). 

• The appropriateness. of the . 

· proposed definition, first hour rating, 

for. instantaneous and storage water 

heaters. 

• The appropriateness of the 

proposed first hour rating test method 

for storag~ tank~type watei' he,aters. 

• The approprJateness of a flrsthour 

' ..rating which,mightgive unrealistic 

· results for water heaters containing 

thermal compensating dip tubes. or 

internal mixing valves. . 

• The appropriateness of the . proposed definitions: heat pump water 

heater, add-on heat pump water heater. 

integral heat pump water heater. solar 

water heater, and heat Pllmp water 

heater storage tank. . 

• The adequateness of the test ' 

provisions for heat pump water heaters 

regarding the usage of backup electric 

resistance element(s) .. 

• The appropriateness of the' 

proposed test energy method to . 

determine the output, energy for 

microwave ovens. 

• The appropriateness to incorporat~ 

by reference the International 

Electrotechnical Commission 

Publication 705, and Amendment 2-

1993~ "Methods for Measurlng the 

Performance of Microwave Ovens for 

Household and Similar Purposes," 

section 4, Paragraph 12 "Microwave 

Power Output Measurement," Paragraph 

13 "Electrical Power Output 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15339

Measurement," and Paragraph 14 (ii) U.S. Department of Energy, Office §430.23 Test procedures for methods of

"Efficiency" as a test method for of Energy Efficiency and Renewable energy consumption.

microwave ovens. Energy, Hearings and Dockets, Forrestal * * * *

*. The appropriateness of the Building, 1000 Independence Avenue, (j) * * *

proposed definitions: Agitator, machine- SW., Washington, DC 20585. (2)(i) The energy factor for automatic

controlled water fill capability, (3) * * * and semi-automatic clothes washers

modified energy factor, moisture (iv) Copies of the International shall be the quotient of the cubic foot

removal factor, nonwater-heating Electrotechnical Commission (liter) capacity of the clothes container

clothes washer, thermostatically Publication can be obtained from the as determined in 3.1 of appendix J to

controlled valves, top-loader-horizontal- American National Standards Institute, this subpart divided by the clothes

axis clothes washer, top- loader-vertical- 11 West 42nd Street, New York, New washer energy consumption per cycle,

axis clothes washer, water consumption York 10036, (212) 642-4936. expressed as: (for nonwater-heating

factor and water-heating clothes washer.. (4 * * clothes washers) the sum of the machine

o The appropriateness of the electrical energy consumption and the

proposed test and performance 13. International Electrotechnical hot water energy consumption as

measurement methods for water-heating Commission Publication 705, and determined in 4.1.1.4 and 4.1.1.3, Amendment 2-1993, "Methods for clothes washers. Mesrn the erform e of M e respectively, of appendix J to this

* The appropriateness of using 5 Ovens for Household and Similar Purposes, subpart (or for water-heating clothes

percent and 25 percent to prorate the Section 4, Paragraph 12 "Microwave Power washers) the energy consumption as

"hottest" available setting and the "hot" Output Measurement," Paragraph 13 determined in 4.1.2.2, of appendix J to

setting, respectively, for water-heating "Electrical Power Output Measurement," and this subpart. The result shall be rounded

clothes washers. Paragraph 14 "Efficiency." off to the nearest 0.01 cubic foot per

e The appropriateness of a new kilowatt-hour per cycle (0.01 liter per

descriptor (moisture removal energy) to 43023 (Amend] kilowatt-hour per cycle).

determine the efficiency of moisture 3. Section 430.23, Test procedures for (ii) The modified energy factor for

removal from the test load. measures of energy consumption, is automatic and semi-automatic clothes o The appropriateness of a new amended to read as follows: washers is determined in accordance

descriptor (water consumption factor) to A. In § 430.23(i)(1)(iii) (second with section 4.4.1 (nonwater-heating

determine the water consumption of sentence) replace "4.3.1, 4.2.2, 4.1.2:5, clothes washers) or 4.4.2 (water-heating

clothes washers. or 4.1.2.6, 4.4.3, and 4.5.1.3" with "4.3, clothes washers), of appendix J to this

* The appropriateness of a new 4.2.2, 4.1.2, and 4.4.3." subpart. The result shall be rounded off

efficiency descriptor (modified energy B. In §430.23(i)(2) (first sentence) to the nearest 0.01 cubic foot per

factor) for possible future use in replace "4.2.1.3, 4.1.3 and 4.4.2" with kilowatt-hour per cycle (0.01 liter per

establishing energy conservation "4.2.1, 4.1.3, and 4.4.4." kilowatt-hour per cycle).

standards for clothes washers. C. In § 430.23(1) (3) (first sentence) (iii) The water consumption factor for

List of Subjects in 10 CFR Part 430 replace "4.3.2, and 4.5.2" with "4.3" automatic and semi-automatic clothes washers is determined in accordance

Administrative practice and dubplac the comma following with section 4.3.3, of appendix J to this

procedure, Energy conservation, remainder of the sentence subpart. The result shall be rounded off

Household appliances, Incorporation by . i of th. itn to the nearest 0.001 cubic foot per gallon

reference.replace I 3n "4.3 , 430 .2.3, 4.1. 4, 4.4( 4 and t tper cycle (0.001 liter per liter per cycle). replace "4.3.3, 4.2.3, 4.1.4, 4.4.4 and Issued In Washington, DC, February 8, 4.5.3" with "4.3, 4.2.3, 4.1.4, 4.4.5." * * * * *

1995.E In §430.230)()(i(A) replace 416 4. Appendix E to subpart B of part 430

Christine Ervin, wih "392" is revised to read as follows: with " 3 9 2 " .

eAssantSecretary' EnergyEfficiencyand F. In §430.23(j)(1)(i) (B) replace Appendix E to Subpart B of Part 430-

"determined according to 4.6" with Uniform Test Method for Measuring the

For the reasons set forth in the "determined according to section 4.1.1.6 Energy Consumption of Water Heaters

preamble, part 430 of chapter Iof title (nonwater-heating) or 4.1.2.2 (water- Definitions 10, of the Code of Federal Regulations heating)"1. n means the

is proposed to be amended as set forth *ea.n). 1.1 Cut-in means the time or water

belowr G. In § 430.230) (1) (i) (introductory temperature when a water heater thermostat text) replace "When gas-heated or oil- has acted to increase the energy or fuel input

PART 430-ENERGY CONSERVATION heated water is used, the product of: the to the heating elements, compressor, or

PROGRAM FOR CONSUMER representative average-use cycle of 416 burner.

PRODUCTS cycles per year" with "When gas-heated 1.2 Cut-out means the time or water

or oil-heated water is used, the product temperature when a water heater thermostat

1. The authority citation for Part 430 of: the representative average-use cycle has acted to reduce to a minimum the energy

continues to read as follows: of 392 cycles per year (for nonwater- or fuel input to the heating elements,

Authority: 42 U.S.C. 6291-6309. heating clothes washers)".ompreso, or burner. means 1.3 DesignPowerRatingmeans the

2. Section 430.22 is amended by H. In §430.230) (1) (ii)(A) replace "4.4 nominal power rating that a water heater

revising parag h (a)()(iand addig with "4.1.1.4". manufacturer assigns to a particular design of revising paragraph (a))(2)3i) and adding paragraph (a) (3) (iv) and adding item I. In § 430.230)(1) (ii)(B) replace "in water heater, expressed in kilowatts or Btu

(a) * * * J. In § 430.23, paragraph 0) (2) is storage-type water heater can supply within

(2) * * * revised to read as follows: an hour that begins with the water heater

EE-RM-94-230 COMMENT 49L

Federal RegiSter / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15339 

Measurement." and Paragraph 14 

"Efficiency" as a test method for 

microwave ovens. a, The appropriatenes's ofthe 

proposed definitions: Agitator. machinecontrolled water fill capability. 

modified energy factor. moisture 

removal factor. nonwater-heating 

clothes washer. thermostatically 

controlled valves. top-loader-horizontalaxis clothes washer. top-Ioader-verticalaxis clothes washer. water consumption 

factor and water-heating clothes washer .. 

a The appropriateness of the 

proposed test and performance 

measurement methods for water-heating 

clothes washers. a The appropriateness of using 5 

percent and 25 percent to prorate the 

"hottest" available setting and the "hot" 

setting. respectively. for water-heating 

clothes washers. 

• The appropriateness of a new 

descriptor (moisture removal energy) to 

determine the efficiency of moisture 

removal from the test load. 

• The appropriateness of a new 

descriptor (water consumption factor) to 

determine the water consumption of 

clothes washers. 

• The appropriateness of a new 

efficiency descriptor (modified energy 

factor) for possible future use in 

establishing energy conservation 

standards for clothes washers. 

List of Subjects in 10 CFR Part 430 

Administrative practice and 

procedure. Energy conservation. 

Household appliances. Incorporation by 

reference. 

Issued in Washington. DC. February 8. 

1995. 

Christine Ervin. 

Assistant Secretary. Energy Efflclency and 

Renewable Energy. 

For the reasons set forth in the 

preamble. part 430 of chapter II of title 

10. of the Code of Federal Regulations 

is proposed to be amended as set forth 

below: 

PART 43o--ENERGY CONSERVATION 

PROGRAM FOR CONSUMER 

PRODUCTS 

1. The authority citation for Part 430 . continues to read as follows: 

Authority: 42 U.S.C, 6291--6309. 

2. Section 430.22 is amended by 

revising paragraph (a) (2) (ii) and adding 

paragraph (a)(3)(iv) and adding item 

number 13 to paragraph (a)(4) to read as 

follows:' . 

§ 430.22 Reference sources. 

(a) * * * 

(2) * * * 

(il) U.S. DepartmEmt ~fE~~rgy. Office 

of Energy Efficiency and Renewable 

Energy. Hearings and Dockets. Forrestal 

Building. 1000 Independence Avenue. 

SW .• Washington. DC 20585. 

(3) ** * 

(iv) Copies of the International 

Electrotechnical Commission 

Publication can be obtained from the 

American National Standards Institute. 

11 West 42nd Street. New York. New 

York 10036. (212) 642-4936. 

(4) * * * 

13. International Electrotechnical 

Commission Publication 705, and 

Amendment 2-1993, "Methods for 

Measuring the Performance of Microwave 

Ovens for Household and Similar Purposes." 

Section 4. Paragraph 12 "Microwave Power 

Output Measurement," Paragraph 13 

"Electrical Power Output Measurement," and 

Paragraph 14 "Efficiency." 

§ 430.23 [Amend~' 

3. Section 430.23. Test procedures for 

measures of energy consumption. is 

amended to read as follows: 

A. In § 430.23(i)(l)(iii) (second 

sentence) replace "4.3.1. 4.2.2. 4.1.2:5. 

or 4.1.2.6.4.4.3. and 4.5.1.3"with "4.3. 

4.2.2.4.1.2. and 4.4.3." 

. B. In §430.23(i)(2) (first sentence) 

replace "4.2.1.3.4.1.3 and 4.4.2" with 

"4.2.1.4.1.3. and 4.4.4." 

C. In § 430.23(1) (3) (first sentence) 

replace "4.3.2. and 4.5.2" with "4.3" 

and replace the comma following 

"subpart" with a period and remove the 

remainder of the sentence. 

D. In § 430.23(1)(4) (first sentence) 

replace "4.3.3. 4.2.3. 4.1.4. 4.4.4 and 

4.5.3" with "4.3. 4.2.3. 4.1.4.4.4.5." 

E. In §430.230)(I)(i)(A) replace "416" 

with "392". 

F. In §430.230)(I)(i)(B) replace 

"determined according to 4.6" with 

"determined according to section 4.1.1.6 

(nonwater-heating) or 4.1.2.2 (waterheating)". 

. G. In § 430.230)(I)(ii) (introductory 

text) replace "When gas-heated or oilheated water is used. the product of: the 

representative average-use cycle of 416 

cycles per year" with "When gas-heated 

or oil-heated water is used. the product 

of: the representative average-use cycle 

of 392 cycles per year (for nonwaterheating clothes washers)" . 

.H. ~~ § 430:~30)(I)(ii)(A) replace "4.4" 

With 4.1.1.4 . 

I. In § 430.230)(I)(ii)(B) replace "in 

Btu per cycle. determined according to 

4.5" with "in Btu per cycle (MJ per 

kwh). determined. according to section . 4.1.1.5". . 

J. In § 430.23. paragraph 0)(2) is 

revised to read as follows: 

§ 430.23 Test procedures for methods of 

energy consumption. 

* * * * * 

0> * * * 

(2)(i) The energy factor for automatic 

and semi-automatic clothes washers 

shall be the quotient of the cubic foot 

(liter) capacity of the clothes container 

as determined in 3.1 of appendix J to 

this subpart divided by the clothes 

washer energy consumption per cycle. 

expressed as: (for nonwater-heating 

clothes washers) the sum of the machine 

electrical energy consumption and the 

hot water energy consumption as 

determined in 4.1.1.4 and 4.1.1.3. 

respectively. of appendix J to this 

subpart: (or for water-heating clothes 

washers) the energy consumption as 

determined in 4.1.2.2. of appendix J to 

this subpart. The result shall be rounded 

off to the nearest 0.01 cubic foot per 

kilowatt-hour per cycle (0.01 liter per 

kilowatt-hour per cycle). 

(il) The modified energy factor for 

automatic and semi-automatic clothes 

washers is determined in accordance 

with section 4.4.1 (nonwater~heating 

clothes washers) or 4.4.2 (water-heating 

clothes washers). of appendix J to this 

subpart. The result shall be rounded off 

to the nearest 0.01 cubic foot per 

kilowatt-hour per cycle (0.01 liter per 

kilowatt-hour per cycle). 

(iii) The water consumption factor for 

automatic and semi-automatic clothes 

washers is determined in accordance 

with section 4.3.3. of appendix J to this 

subpart. The result shall be rounded off 

to the nearest 0.001 cubic foot per gallon 

per cycle (0.001 liter per liter per cycle). 

* * * * * 

4. Appendix E to subpart B of part 430 

is revised to read as follows: 

Appendix E to Subpart B of Part 430-

Uniform Test Method for Measuring the 

Energy Consumption of Water Heaters 

1. Def1nitions 

1.1 Cut-in means the time or water 

temperature when a water heater thennostat 

has acted to increase the energy or fuel input 

to the heating elements, compressor. or 

burner. 

1.2 Cut-out means the time or water 

temperature when a water heater thennostat 

has acted to reduce to a minimum the energy 

or fuel input to the heating elements • 

compressor. or burner. 

1.3 Design Power Rating means the 

nominal power rating that a water heater 

manufacturer assigns to a particular design of 

water heater. expressed in kilowatts or Btu 

(KJ) per hour as appropriate. 

1.4 Energy Factor means a measure of 

water heater overall efficiency. 

1.5 First Hour Rating is an estimate of the 

maximum volume of "hot" water that a 

storage-type water heater can supply within 

an hour that begins with the water heater 
15340 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

fully heated (i.e., all thermostats satisfied). and subsequent recovery and the end of the 1.14 Rated Storage Volume means the

For instantaneous water heaters, first hour 24-hour test: T.by,2 represents the total time water storage capacity of a water heater, in

rating designates the maximum volume of during the 24-hour simulated use test when gallons (liters), as specified by the

hot water that can be supplied during any water was not being withdrawn from the manufacturer.

hour. water heater.

1.6 Heat Pump Water Heater Storage 1.11 Storage-Type Water Heaters. 2. Test Conditions

Tank is an insulated tank designed, wired 1.11.1 Electric storage waterheatermeans 2.1 Installaton Requirements. Tests shall

and labeled for use exclusively with an add- a water heater that uses electricity as the be performed with the water heater and

on heat pump water heater or solar water energy source, is designed to heat and store instrumentation installed in accordance with

heater and being.unable to operate without water at a thermostatically controlled Section 4 of this appendix. an add-on heat pump water heater or solar temperature of less than 180°F (82°C), has a 2.2 Ambient Air Temperature. The

water heater. The heat pump water heater nominal input of 12 kilowatts or less, and has ambient air temperature sha be controlled

storage tank may contain one or two a manufacturers rated storage capacity of 120to a value between 65.0F and 70.0F (18.3C

thermostats and up to two electric resistance gallons (450 liters) or less.and 21 on a continuous basis. For heat

heating elements, and has a nianufacturer's 1.11.2 GasStorage WaterHeatermeans a

rated capacity of 120 gallons (450 liters) or water heater thater uses gas as the energy e he dry bulb

less. When tested with the add-on heat pump source. is designed to heat and store water at temperature shal be maintained at 67.5F +

water heater or solar water heater a thermostatically controlled temperature of F (19C 0.6C) and, n addition, the

inoperative, the heat pump water heater less than 180°F (82°C), has a nominal input relative humidity shal be maintained

storage tank shal have an energy factor that of 75,000 Btu per hour (79 MJ per hour) or between 49 and 51 percent.

is determined in accordance with the test less, and has a manufacturer's rated storage 2.3 Supply Water Temperature. The

procedure for water heaters. capacity of 100 gallons (380 liters) or less. temperature of the water being supplied to

1.7 ' Heat Trap meansa device which can 1.11.3 HeatPump WaterHeatermeans a the water heater shall be maintained at 58F±

be integrally connected or independently water heater that uses electricity as the 2aF (14.4Cil. 1°C) throughout the test.

attached to the hot and/or cold water pipe energy source, is designed to heat and store 2.4 Storage Tank Temperature.The

connections of a water heater such that the water at a thermostatically controlled average temperature of the water within the

device will develop a thermal or mechanical temperature of less than 180°F (82°C), has a storage tankshall be set to 135°F±5°F

seal to minimize the redrculatlon of water maximum current rating of 24 amperes (57.2°C±2.80C).

due to thermal convectionbetween the water (includes the compressor and all auxiliary 2.5 Supply Water Pressure. During the

heater tank and its connecting pipes. equipment such as fans, pumps, and test when water is not being withdrawn, the

1.8 .Instantaneous-Type Water Heaters controls, and if on the same circuit, any supply pressure shall be maintained between

1.8.1 Electric Instantaneous Water Heater resistive elements) for an input voltage of 250 40 psig (275 kPa) and the maximummeans a water heater that uses electricity as volts or less, and, if the tank is supplied, has allowable pressure specified by the water

the energy source, Initiates heating based on a manufacturer's rated storage capacity of 120 heater manufacturer.

sensing water flow, is designed to deliver gallons (450 liters) or less. Resistive elements 2.6 Electrical and/or Fossil Fuel Supply. water flow, is designed to deliverma uensing 

water at a controlled temperature of less t used to provide spplemental heating may 2.6.1 Electrical. Maintain the electrical

180°Ft (82°C) hasa maximum^input ofl use the same circuit as the compressor If (1) supply voltage to within ±1 percent of the

owatts or(82C), has a maxmumnput12 An interlocking mechanism prevents center of the voltage range specified by the kilowatts or less, and has a manufacturer'spratin and spnecifoed storage c haoao ufacturerless ta2 s concurrent compressor operation and water heater and/or heat pump manufacturer. specified stoage capacityrof less than 2istive heating, or (2) concurrent operation 2..2 Natura s. Maintathesupply

1.8.2 as nstantaneous WaterHeater Otherwise, separate circuits shall be used by pressure is not specified, maintain a supply

means a water h teter that uses gas as the the resistive elements and the heat pump pressureof 7 to 10 inches of water column

energy source, initiates heating based on components. A heat pump water heater may (1.7 Kpa to 2.5 Kpa). If twater i uheat 

sensing water flow, is designed to deliver be an integral type or an add-on type.7 Kpa to 2.5 Kpa). f the water heater is

water at a controlled temperature of less than a. Integral heat pump water. heater-An equipped wth a gas appliance pressure

180OF (820C), has an input greater than to-waterheatum tealwiregulator, the regulator outlet pressure shall to-water heat pump integral with an 50,000 Btu per hour (53 MJ per hour) but less insulatedstoragetanbe within 10% of the manufacturer's

than 200,000 Btu per hour (210 MJ per hour), b. Add-on heat pump water heater-An air specified manifold pressure. Use natural gas

and has a manufacturer's specified storage to-water heat pump designed for use with a having a higher heating value of

capacity of less than 2 gallons (8 liters). The heat pump water heater storage tank approximately 1,025 Btu per standard cubic

unit may use a fixed or variable burner input. 1114 Oil Storage Water Heatermeans a foot (38190 KJ per standard cubic meter).

1.8.3 Ol Instantaneous Water Heater water heater that uses oil as the energy 2.6.3 Propane Gas. Maintain the supply

means a water heater that uses oil as the source, is designed to heat and store water at pressure in accordance with the

energy source, initiates heating based on a thermostatically controlled temperature of manufacturer's specifications. If the supply

sensing water flow, is designed to deliver less than' 1800F (82°C), has a nominal energy pressure is not specified, maintain a supply

water at a controlled temperature of less than input of 105;000 Btu/hr (110 MJ/hr) or less, pressure of 11 to 13 inches of water column

180°F (82°C), has an input greater than and has a manufacturer's rated storage (2.7 kPa to 3.2 kPa). If the water heater is

50,000 Btu per hour (53 MJ per hour) but less capacity of 50 gallons (190 liters) or less. equipped with a gas appliance pressure

than 200,000 Btu per hour (210 MJ per hour), 1.11.5 Solar Water Heater means a water regulator, the regulator outlet pressure shall

and has a manufacturer's specified storage heater that is designed to obtain at least half be within ±10% of the manufacturer's

capacity of less than 2 gallons (8 liters). The of the annual energy for heating water from specified manifold pressure. Use propane gas

unit may use a fixed or variable burner input. the sun. with.a higher heating value of approximately

1.9 RecoveryEfficiencymeans the ratio of 1.12 ASHRAE Standard 41.1-86 means 2.500 Btu per standard cubic foot (93 kJ per

energy delivered to the water to the energy the standard published in 1986 by the standard cubic meter).

content of the fuel consumed by the water American Society of Heating, Refrigerating 2.6.4 Fuel Ol Supply. Maintain an

heater. and Air-Conditioning Engineers, Inc. and uninterrupted supply of fuel oil. Use fuel oil

1.10 Standby means the time during titled Standard Measurement Guide: Section having a heating value of approximately

which water is not being withdrawn from the on Temperature Measurements; 138,700 Btu per gallon (38,660 kJ per liter).

water heater. There are two standby time 1.13 ASTM-D-2156-80 means the test

intervals used within this test procedure: standard published in 1980 by the American stmetaton

T*byr, represents the elapsed time between the Society of Testing and Measurements and 3.1 Pressure Measurements. Pressure

time at which the maximum mean tank titled Method for Smoke Density in Flue measuring instruments shall have an error no

temperature is observed after the sixth draw Gases from Burning Distillate Fuels. greater than the following values: 1

, ' * * ' ' * ' , . r " '- ·' " " ' 

EE-RM-94-230 COMMENT 49L

15340 Federal Register / Vol. ,60, No. 56 I Thursday, March 23, i995 / Proposed Rules 

fully heated (I.e., all thermostats satisfied). 

For instantaneouS water heaters, first hour 

rating designates the maximum volume of 

hot water that can be supplied during any 

hour. 

1.6 Heat Pump Water Heater Storase 

Tank is an insUlated tank designed, wired 

and labeled for use exclusively with an addon heat pump water heater or solar water· 

heater and being.unable to operate without 

an add-on heat pump water heater or solar 

water heater. The heat pump water heater 

storage tank may contain one or two 

thermostats and up to twei electric resistance 

heating elements, and has a manufacturer's 

rated capacity of 120 gallons (450 liters) or . 

less. When teSted with the add-on heat pump 

water heater or sol8r water heater . 

and subsequent recovery and the end of the 

24 -hc;>ur test; 'tolby,l represents the total time 

during the 24-hour simulated wie test when 

water was not being withdraWn from the 

water heater. 

" I.IIStorase-Type Water Heaters. . 

· 1.11.1 Electric storage water heater means 

a water heater that uses electricity as the . 

energy source, isdesigned to heat and store 

water at a thermostatlciilly·controlled 

temperature o( less than 180°F (82°C), has a 

nom1n:al input of 12 kUowatts or, less; and has 

a manufacturer's rated storage capacity of 120 

gallons (450 liters) or less. 

1.11.2 Gas Storage Water Heater means a 

water heater that uses gas as the energy 

source, is designed to heat and store, water at 

a thermostatically controlled teniperature of 

less than 180°F (82°C), has a nomtnal input 

of 75,000 Btu per hour (79 MJ per hour) or inoperative, the heat pump water heater 

storage tank shall have an energy factor that 

is determtned in accordance with the test 

procedure for .waterheaters. 

, less, and has a nianufacturer's rated storage' 

capacity of 100 gallons (380 liters) or less. 

1.7.' Heat Trap means a device which can 

be integrally connected or independently 

. attached to the hot and/or cold water pipe , 

connections of a water heater such that the 

device will develop a thermal or mechanical 

seal to mtntmtze the recirculation of water' 

due to thermal convection between the water 

heater tank and its connectlng pipes. '. 

1.8 . Instantaneous"Type Water Heaters. 

1.8.1 Electric Instantaneous Water Heater 

,means a water ,heater that uses electricity as 

. the energy source, inttlates heating based on . 

sensing Water flow, is designed to deliver. 

water at a controlled temperature of less than 

180°F (82°C), has a maximum input ofl2 

kUowatts or less, and has a manufacturer's 

Specified storage capacity of less than 2 

gallons (8 liters). The unit may use a fixed 

or variable power input. 

1.8.2 Gas Instantaneous Water Heater 

means a water heater that uses gas as the 

energy source, inttlates heating based on 

sensing water flow, is designed to deliver . 

water at a controlled temperature of less than 

180°F (82°C), has an input greater than 

50,000 Btu per hour (53 MJ per hour) but less 

than 200,000 Btu per hour (210 MJ per hour), 

and has a manufacturer's spectfled storage 

capacity ofless ~ 2 gallons (8 liters). The 

unit may use a fixed or variable burner input. ' 

1.8.3 au Instantaneous Water Heater 

means a water heater tlult uses oU as the 

energy source, initiates heating based on 

sensing wa~er flow, is designed to deliver 

water :at a controlled temperature of less than 

180°F (82°C), has art input greater than 

50,000 Btu per hour (53 MJ per hour) but less 

than 200,000 Btu per hour (210 MJ per hour), 

and has a manufacturer's spectfled storage 

capacity of less than 2 gallons (8 liters). The 

unit may use a fixed or variable burner input. 

1.9 Recovery Efficiency means the ratio of 

energy deUvered to the water to the energy 

content of the fuel consumed by die Water 

heater. 

1.10 Sr:.rmdby means the time during 

which water is not being withdrawn from the 

water heater. There are two standby time 

intervals used within this test procedure: 

't....,..1 represents the elapsed time between the 

time at which the maXimum mean tank 

temperature is observed after the sixth draw 

1. n.3 Heat Pump Water Heater means a 

water heater that uses electricity as the 

energy source, is designed to heat and store 

· water at a thermostatically controlled 

temperature of less than 180°F (82°C), has a 

· maxini~ current rating of 24 amperes 

(includes the compressor and all auxlltary 

equipment !!uch as fans, pumps, and 

cOntrols, and if on the same circuit, any 

resistive elements) for an input voltage of 250 

vOlts or less, and, if the tank is supplied, has . 

· a manufacturer's rated storage capacity of 120 

gallons (450 liters) or less. Resistive. elements 

used to.provlde supplemental heating may . use the same circuit as the compressor if (I) 

An intedocktng mechanism prevents 

concurrent compressor operation and 

resistive heating, or (2) concurrent operation , 

does not.result in the maximum current 

rating of 24 amperes being exceeded. 

Otherwise, separate circuits sh:all be used by 

the resistive elements and the heat pump 

components: A heat pump water heater may 

be an integral type or an add-on type. 

. a. Integral heat pump water. heater-An aIrto-water heat pump integral with an 

insulated storage tank. 

b.·Add-on heat pump water heater-An aIrto-water heat pumpdestgned for use with a 

heat pump water heater storage tank. 

L 11.4 on Storage Water He~er means a 

water heater that uses oU as the energy 

source, is designed to heat and store water at 

a thermostatically controlled temperature of 

less than-180°F (82°C), has a nominal energy 

input of 105;000 BttiIhr (110 MJIhr) or less, 

and has a manufacturer's rated storage 

capacity of 50 gallons (190 Uters) or less. 

I. 1:1 .5 Solar Water Heater means a water 

heater that is designed to obtain at least half 

of the annual energy for heating water from 

the sun. 

1.12 A5HRAE Standard 41.1-86 means 

the standard published in 1986 by. the 

American S<idety of Heating, Refrigerating 

and Air-Conditioning Engineers, Inc. and , 

'titled Standard Measurement Guide: Section 

on Temperature Measurements; 

1.13 ASTM-D-2156-80means the test 

• standard publish~ in 1980 by the American 

Society ofTesttng and Measurements an~ 

titled Method for.Smoke DensitY in Flue 

Gases from Burning Distillate, Fuels. ' 

1.14 Ratfid Storage Volume means the 

. water storage capacity of a water heater, in 

gallons (liters). as spectfled by the 

manufacturer. 

2. Test Conditions 

2.1 Installation Requirements. Tests shall 

be performed With the water heater and , 

instrumentation installed in accordance with 

Section 4 of this appendix. 

2.2 Ambient Air Temperature. The 

ambient air tempera,ture shall be controlled 

to a value between 65.00F and 70;0°F (18.3°C 

and 2LloC) onacontinuous basis. For heat.: 

pump water heaters, the dry bulb 

temperature.sh:all be m8tntalned at 67.5°F:t . 

.I OF (I 9. 7°C:t 0.6°C) and, m addition, the' . 

relative humidity sha1I be maintained 

betvyeen 49 and 51 percent. r 

2.3 Supply Water Temperature. The 

temperatUre of the water being supplied .to 

the water heater shall be maintained at 58°F:t 

2"F (l4.4°C:tI.l°C) throughout the test. 

2.4 Storage Tank Temperature. The 

average temperature of the water within the 

storage tanksh:all be set to 135°F:t5°F 

(57.2°C:t2.8°C). 

2.5 Supply Water Pressure. During the 

test w~n water is not being vvithdrawn, the 

supply pressure sha1I be maintained between 

40 psig (275 kPa) and the maximum 

allowable pressure spectfled by the water 

heater manufacturer . 

.2.6 Electrical and/or Fossil Fuel Supply. 

2.6.1 Electrical. Maintain the electrical 

supply voltage to within:tl percent of the 

, center of the voltage range spectfled by the 

water heater and/or heat pump manufacturer. 

2.6.2 Natural Gas. Maintain the supply 

pressure in accordance with the , 

manufacturer's spectflcations. If the supply 

pressure is no~ spectfled, maintain a supply 

pressure of 7 to 10 inches of watercoJumn 

(1.7 Kpa to 2.5 Kpa). Hthe water heater is 

equipped with a gas appllarice pressure 

regulator, the regulator outlet pressure shall 

be within :t10% of the manufacturer's 

spet:tfled manifold pressure. Use natural gas 

having a higher heating value of 

approximately 1.025 Btu per standard cubic 

foot (38190 KJ per standard cubic meter). 

. 2.6.3 Propane Gas. Maintain the supply 

pressure in accordance with the 

manufacturer's spectflcations. H the supply 

pressure is not spectfled, maintain a supply 

pressure of II to 13 inches of water column 

(2.7 kPa to 3.2 kJla). Hthe water heater is 

equipped with a gas applianCe pressure 

regulator, the regulator outlet pressure shall 

be within :t1O% of the manufacturer's 

'. spectfled manifold pressure. Use propane gas 

wlth.a higher heating value of approximately 

2,500 Btu per standard cubic foot (93 kj per 

standard cublc meter).' . 

2.6.4 Fuel Oil Supply. Maintain an 

uninterrupted supply of fuel 011. Use fuel oU 

having a heattng value of approximately 

138,700 BtU per gallon (38,660kj per liter) .. 

3. Instrumentation . 

3.1 Pressure Measurements. Pressure . 

measuring instrUments shall have an' error no 

greater than tilt! following values: ; . 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15341

Item measured Instrument accuracy Instrument precision

Gas pressure ....................... 0.1 inch of water column (± 0.025 kPa) ....................... 0.05 inch of water column (± 0.012 kPa). Atmospheric pressure ......... ± 0.1 inch of mercury column (± 0.34 kPa) .................... ± 0.05 inch of mercury column (± 0.17 kPa). Water pressure .................... ± 1.0 pounds per square inch (± 6.9 kPa) ...................... ± 0.50 pounds per square inch (± 3.45 kPa).

3.2 Temperature Measurement. with the Standard Measurement Guide: 3.2.2 Accuracy and Precision. The

3.2.1 Measurement. Temperature Section on Temperature Measurements, accuracy and precision of the instruments,

measurements shall be made in accordance ASHRAE Standard 41.1-86. including their associated readout devices,

shall be within the limits as follows:

Item measured Instrument accuracy Instrument precision

Air dry bulb temperature ........................................ ........................................................................ ± 0.2 °F (± 0.1 C).....C). Air wet bulb temperature ........................................ ........................................ ± 0.2 °F (± 0.1 C)..... ± 0.1 F (± 0.06 C). Inlet and outlet water temperatures .................................................................... 0.2°IF 0.1 IC)...... ± 0.1 F ( 0.06 °C).

Storage tank temperatures .................................... ;. ..................................... 0.5 °F (± 0.3 °C) ..... ± 0.25 IF (± 0.14 C).

3.2.3 Scale Division. In no case shall the 3.8 Time. The elapsed time lines to outside of the Jacket or cabinet, type

smallest scale division of the instrument or measurements shall be measured with an "L" hard copper tubing shall be used to

instrument system exceed 2 times the instrument that is accurate within ±0.5 extend the water line horizontally to the

specified precision. seconds per hour. exterior of the jacket or cabinet. Unions may

3.2.4 Temperature Difference. 4. nst t be used to facilitate installation and removal

Temperature difference between the entering of the piping arrangements. A pressure gauge

and leaving water may be measured with any 4.1 Water Heater Mounting. A water and diaphragm expansion tank shall be

of the following: heater designed to be free standing shall be installed in the supply water piping at a

a. A thermopile installed according to the manufacturer's location upstream of the 24-inch (61

b. Caibrated resistance therm *ometers directions on a /4 inch (2 cm) thick plywood centimeters) cold water inlet pipe. An

. Precisiond r thermometers platform supported by three 2x4 inch (5 appropriately rated pressure and temperature cmx 10 cm) runners. If the water heater is not relief valve shall be installed on all water d. Calibrated thermistors approved for installation on combustible heaters at the port specified by the

e. Calibrated thermocouple flooring, suitable non-conibustible material manufacturer. Discharge piping for the relief

l. Quartz thermometers shall be placed between it and the platform. valve shall be non-metallic. If heat traps and/

3.2.5 Thermopile Construction. If a For heat pump water heaters without a or piping insulation and/or pressure relief

thermopile is used, it shall be made from storage tank supplied by the manufacturer, valve insulation are supplied with the water

calibrated thermocouple wire taken from a connections shall be made with a storage heater, they shall be installed for testing. single spool. Extension wires to the recording tank as described in section 4.10 and in Clearance shall be provided such that none device shall also be made from that same accordance with manufacturer-published of the piping contacts other surfaces in the

spool. installation instructions. The storage tank test room. 3.2.6 Time Constant. The time constant of and heat pump section shall be placed on 4.4 Fuel and/or Electrical Power and

the instruments used to measure the inlet platform(s) constructed as previously Energy Consumption. Install one or more and outlet water temperatures shall be no described. If installation materials are not instruments which measure, as appropriate,

greater than 5 seconds. provided by the heat pump manufacturer, the quantity and rate of electrical energy and/

3.3 Liquid Flow Measurements. The use uninsulated 8 foot (2.4 m) long or fossil fuel consumption in accordance

accuracy of the liquid flow rate connecting hoses, having an inside diameter with Section 3. For heat pump water heaters

measurement, using the calibration if of 5/8 inch (1.6 cm). Wall mounted water ·that use supplemental resistive heating, the

furnished, shall be equal to or less than ± 1% heaters shall be installed in accordance with electrical energy supplied to the resistive

of the measured value in mass units per unit manufacturer-published installation element(s) shall be metered separately from

time. instructions on a simulated wall section the electrical energy supplied to the entire

3.4 Electric Energy. The electrical energy made from 3/4 inch (2 centimeter) plywood appliance or to the remaining components

used shall be measured with an instrument and 2x4 inch (5x10 centimeter) studs. (i.e., compressor, fans, pumps, controls, etc.).

and associated readout device that are Placement in the test room shall be in an area 4.5 Internal Storage Tank Temperature

accurate within ±1 % of the reading. protected from drafts. Measurements. Install six temperature

3.5 Fossil Fuels. The quantity of fuel used 4.2 Water Supply. The water supply shall measurement sensors inside the water heater

by the water heater shall be measured with be capable of delivering water at conditions tank with a vertical distance of at least 4

an instrument and associated readout device as specified in sections 2.3 and 2.5. inches (10 centimeters) between successive

that is accurate within ±1% of the reading. 4.3 Water Inlet and Outlet Configuration. sensors. A temperature sensor shall be

3.6 Mass Measurements. For mass Inlet and outlet piping connections shall be positioned at the vertical midpoint of each of

measurements greater than or equal to 10 configured as illustrated in Figures 1, 2, or the six equal volume nodes within the tank.

pounds (4.5 kg), a scale that Is accurate 3. For water heaters that are 36 inches (91 Nodes designate the equal volumes used to

within ±1.0% of the reading shall be used to centimeters) or less in height and intended evenly partition the total volume of the tank.

make the measurement. For mass for installation either beneath, adjacent to, or As much as is possible, the temperature

measurements less than 10 pounds (4.5 kg), in conjunction with a counter (commonly sensor should be positioned away from any the scale shall provide a measurement that is referred to as an under-the-counter or table- heating elements, anodic protective devices,

accurate within ±0.1 pound (±0.045 kg). top model), the inlet and outlet connections tank walls, and flue pipe walls. If the tank

3.7 Heating Value. The higher heating shall be configured as illustrated in Figures cannot accommodate six temperature sensors value of the natural gas, propane, or fuel oil 4a and 4b. Type "L" hard copper tubing, the and meet the installation requirements

shall be measured with an instrument and same size as the connections on the water specified above, install the maximum

associated readout device that is accurate heater, shall be connected to the tank and number of sensors which comply with the

within ±1 % of the reading. The heating value extend 24 inches (61 centimeters) in length. installation requirements. The temperature

of natural gas and propane must be corrected If an under-the-counter type water heater is sensors shall be installed either through (1)

for local temperature and pressure not factory equipped with pipe to extend the the anodic device opening; (2) the relief valve

conditions. field connection point of the water heater opening; or (3) the hot water outlet. If

EE-RM-94-230 COMMENT 49L

Federal Register' / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15341 

Item measured Instrument accuracy Instrument precision 

. Gas pressure ....................... ± 0.1 inch otwater column (± 0.025 kPa) .................. ,.... ± 0.05 inch of water colurm (± 0.012 kPa). 

Atmosphetic pressure ......... ± 0.1 inch of mercury column (± 0.34 kPa) .................... ± 0.05 inch of mercury colurm (± 0.17 kPa). 

Water pressure .................... ± 1.0 pounds per square inch (± 6.9 kPa) ............ .......... ± 0.50 pounds per square inch (± 3.45 kPa). 

3.2 Temperature Measurement. 

3.2.1 Measurement. Temperature 

measurements shall be made in accordance 

with the Standard Measurement Guide: 

Section on Temperature Measurements, 

ASHRAE Standard 41.1-a6. 

3.2.2 Accuracy and Pff;c1s10n. The 

accuracy and precision of the instruments, 

including their associated readout devices, 

shall be within the llmits as follows: 

Item measured Instrument accuracy Instrument precision 

Air dry bulb temperature ......................................................................... ......................................... ± 0.2 OF (± 0.1 °C) ..... ± 0.1 OF (± 0.06 °C). 

Air wet bulb temperature ......................................................... :.............. ......................................... ± 0.2 OF (± 0.1 °C)' ..... ± 0.1 OF (± 0.06 °C). 

Inlet and oudet water temperatures ........................................................................ ........................ ± 0.2 OF (± 0.1 °C) ..... ± 0.1 OF (± 0.06 °C). 

Storage tank temperatures ........................................................................ ..................................... ± 0.5 OF (± 0.3 °C) ..... ± 0.25 OF (± 0.14 °C). 

3.2.3 Scale Division. In no case Shall the 

smallest scale division of the instrument or 

instrument system exceed 2 times the 

specified preCision. . 

3.2.4 Temperature Difference. 

Temperature difference between the entering 

and leaving water may be measured with any 

of the following: 

a. A thermopUe 

b. Calibrated resistance thermometers 

c. Precision thermometers 

d. Calibrated thennistors 

e. Calibrated thermocouple 

f. Quartz thermometers 

3.2.5 Thermopile Construction. If a 

thermopile is used, it shall be made from 

calibrated thermocouple wire taken from a 

single spool. Extension wires to the recording 

device shall also be made from that same 

spool. 

3.2.6 T1rne Constant. The time constant of 

the instruments used to measure the inlet 

and outlet water temperatures shall be no 

greater than 5 seconds. 

3.3 Liquid Flow Measurements. The 

accuracy of the liqUid flow rate 

measurement, using the calibration if 

furnished, shall be equal to or less than ± 1 % 

of the measured value in mass units per unit 

time. 

3.4 Electric Energy. The electrical energy 

used shall be measured with an instrument 

and associated readout device that are 

accurate within ±l % of the reading. 

3.5 Fossil Fuels. The quantity of fuel used 

by the water heater shall be measured with 

an instrument and associated readout device 

that is accurate within ±1 % of the reading. 

3.6 Mass Measurements. For mass 

measurements greater than or equal to 10 

pounds (4.5 kg), a scale that is accurate 

within ±1.0% of the reading shall be used to 

make the measurement. For mass 

measurements less than 10 pounds (4.5 kg), 

the scale shall provide a measurement that is 

accurate within ±D. 1 pound (±D.045 kg). 

3.7 Heating Value. The higher heating 

value of the natural gas, propane, or fuel oil 

shall be measured with an instrument and 

associated readout device that is accurate 

within ±1 % of the reading. The heating value 

of natural gas and propane must be corrected 

for local temperature and pressure 

conditions. .. 

3.8 T1rne. The elapsed time 

measurements shall be measured with an 

instrument that is accurate within ±D. 5 

seconds per hour. 

4. Installation 

4.1 Water Heater Mounting. A water 

heater designed to be free standing shall be 

installed according to the manufacturer's 

directions on a 0/4 inch (2 em) thick plywood 

platform supponed by three 2x4 inch (5 

emx 1 0 cm) runners. If the water heater is not 

approved for installation on combustible 

flooring, suitable non-combustible material 

shall be placed between it and the platform. 

For heat pump water heaters without a 

storage tank supplied by the manufacturer, 

connections shall be made with a storage 

tank as described in section 4.10 and in 

accordance with manufacturer-published 

installation instructions. The storage tank 

and heat pump section shall be placed on 

platform(s) constructed as preViously 

described. If installation materials are not 

provided by the heat pump manufacturer, 

use uninsulated 8 foot (2.4 m) long 

connecting hoses, having an inside diameter 

of sAl inch (1.6 cm). Wall mounted water 

heaters shall be installed in accordance with 

manufacturer-published installation 

instructions on a simulated wall section 

made from 3/4 inch (2 centimeter) plywood 

and 2x4 inch (5xl0 centimeter) studs. 

Placement in the testroom shall be in an area 

protected from drafts'. 

4.2 Water Supply. The water supply shall 

be capable of delivering water at conditions 

as specified in sections 2.3 and 2.5. 

4.3 Water Inlet andOuUet Conllguration. 

Inlet and outlet piping connections shall be 

configured as illustrated in Figures 1, 2, or 

3. For water heaters that are 36 inches (91 

centimeters) or less in height and intended 

for installation either beneath, adjacent to, or 

in conjunction with a counter (commonly 

referred to as an under-the-counter or tabletop model), the inlet and outlet connections 

shall be configured as illustrated in Figures 

4aand 4b. Type "L" hard copper tubing, the. 

same size as the connections on the water 

heater. shall be connected to the tank and 

extend 24 inches (61 centimeters) in length. 

If an under-the-counter type water heater is 

not factory equipped with pipe to extend the 

field connection point of the water heater 

lines to outside of the Jacket or cabinet, type 

"L" hard copper tubing shall be used to 

. extend the water line horizontally to the 

exterior of the jacket or cabinet. Unions may 

be used to facilitate installation and removal 

of the piping arrangements. A pressure gauge 

and diaphragm expansion tank shall be 

installed in the supply water piping at a 

location upstream of the 24-inch (61 

centimeters) cold water inlet pipe. An 

appropriately rated pressure and temperature 

relief valve shall be installed on all water 

heaters at the pon specified by the 

manufacturer. Discharge piping for the rellef 

valve shall be non-metallic. If heat traps and/ 

or piping insulation and/or pressure relief 

valve insulation are supplied with the water 

heater, they shall be installed for testing. 

Clearance shall be provided such that none 

of the piping contacts other surfaces in the 

test room. 

4.4 Fuel and/or Electrical Power and 

Energy Consumption. Install one or more 

instruments which measure, as appropriate. 

the quantity and rate of electrical energy and/ . 

or fossil fuel consumption in accordance 

with Section 3. For heat pump water heaters 

. that use supplemental resistive heating, the 

electrical energy supplied to the resistive 

element(s) shall be metered separately from 

the electrical energy supplied to the entire 

appliance or to the remaining components 

(Le., compressor, fans, pumps, controls, etc.). 

4.5 Internal Storage Tank Temperature 

Measurements. Install six temperature 

measurement sensors inside the water heater 

tank with a vertical distance of at least 4 

inches (10 centimeters) between successive 

sensors. A temperature sensor shall be 

positioned at the vertical midpoint of each of 

the six equal volume nodes within the tank. 

Nodes designate the equal volumes used to 

evenly partition the total volume of the tank. 

As much as is possible, the temperature 

sensor should be positioned away from any 

heating elements, anodic protective devices, 

tank Walls, and flue pipe walls. If the tank 

cannot accommodate six temperature sensors 

and meet the installation reqUirements 

specified above, install the maximum 

number of sensors which comply with the 

installation requirements. The temperature 

sensors shall be installed either through (1) 

the anodic device opening; (2) the relief valve 

opening; or (3) the hot water outlet. If 
15342 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

installed through the relief valve opening or and it no longer extends into the top of the installed on top of the tee fitting. Added

the hot water outlet, a tee fitting or outlet tank, a substitute relief valve that has a fittings shall be covered with thermal

piping, as applicable, shall be installed as sensing element that can reach into the tank insulation having an R value between 4 and

close as possible to Its original location. If the shall be installed. If the hot water outlet 8 hr.ft2.*F/Btu (0.7 and 1.4 m2.OC/W).

relief valve temperature sensor is relocated, includes a heat trap, the heat trap shall be. MLuIN CODE S64-oi-

·To Tl11 L r r 

Ex~fliten M aki

*' " .. *. . . ., ..

T o, 

Figure

To _o or T 

Wltrmo~r w r ' _* | :

Figure 2

To Scoal or

wValv

Fig. Sura 3

EE-RM-94-230 COMMENT 49L

15342 Federal RegiSter /Vol.60, No. 56/ Thursday, March 23,' 1995 / Proposed Rules / 

installed through,the relief valve opening or 

the hot water outlet; a tee fitting or outlet 

pip1r1g. as applicable. shall be installed as 

close as possible to its originallocat1on. If the 

, relief valve temperature sensOr is relocated, 

'/ 

To .... or 

• 

and it no longer extends into the top of the 

tank. a substitute relief valve that has a 

sensing element that can reach into the tank 

shall be installed. If the hot, water outlet' 

includes a heat trap. the heat trap shall be 

Teur 

P1pnl 

Tour 

Piaure 2 

",,;-'7'!III!'I+ 

ftsura 3, 

installed on top of the tee fitting. Added 

fittings shall be covered with thermal 

insulation having an R value between 4 and, ' 

8 hr·ft2.oFlBtu (0.7 and 1.4 m2.oCIW). 

BILLING CODE ~ 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15343

_ _ _ _ m

"W ater Suppl

Edpaisjon y asn

Tank

Figure 4b.

BILLING CODE 6450-01-C

· ,, f

3I. '-! l 1 2 4

Figure 4b.

BILUING CODE 645:.01.C

EE-RM-94-230 COMMENT 49L

Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15343 

~, 

, ... -.... 

I " • '-------, 

t· 'I 'I I' , I I ~-.. , I . ~ . " 

Figure 4a. 

, ... -.... , ~ " 1------, I·, I ' I 

I I 

Exp8nsion, 

Tank 

'Water Supply Main . 

To Scale or 

wa.rmeter 

I ' I 

I ,--, I,. IS- • ~ ,. Tour nuw, 

==::::;:;:==::;i=i====:!:::;P:i===' " ......... 

Figure 4b. 

BlWNG CODE 6450-01-C 
15344 Federal Register / Vol. 60, No. 56 / Thursday,'March 23, 1995 / Proposed Rules

4.6 Ambient Temperature. The ambient completely filled with water (with all air per minute (11.4±0.95 liters per minute) for

air temperature shall be measured eliminated and line pressure hpplied as units with rated storage capacities of 20

approximately at the vertical mid-point of the described in section 2.5) and dividing the gallons (76 liters) or more and 1.0±0.25

water heater and approximately 2 feet (60 resulting net weight by the density of water. gallons per minute (3.8±0.95 liters per

centimeters) from the surface of the water Density shall be evaluated based on the minute) for units with rated storage

heater. The sensor shall be shielded against temperature of the stored water. capacities less than 20 gallons (76 liters).

radiation. 5.1.2 Setting the Thermostat for a Collect the water in a container that is large

4.7 Inlet and Outlet Water Temperature Thermostatically Operated Water Heater. enough to hold the volume removed during

Measurements. Install temperature sensors in Starting with a tank of supply water, initiate an individual draw and suitable for weighing

the cold-water inlet pipe and hot-water outlet normal operation of the water heater. After at the termination of each draw.

pipe as shown in Figures 1, 2, 3, or 4a and cutout, determine the mean tank temperature Alternatively, a water meter may be used to

4b, as applicable. (based on all of the in-tank sensors) every directly measure the water volume(s)

4.8 Flow Control. A flow control valve minute until the maximum value is observed. withdrawn.

shall be installed to provide flow as specified Determine whether this maximum value for 5.1.4.2 Draw Initation Criterion. Begin

in Section 5. the mean tank temperature is within the the first hour rating test by Imposing a draw

4.9 Flue Requirements. range of 135°F5°F (57.2°C±2.8C). If not, on the storage-type water heater. After

4.9.1 Gas-Fired WaterHeaters. Establish a turn off the water heater, adjust the completion of this first draw, initiate

natural draft in the following manner. For thermostat, and refill the tank with supply successive draws based on the following

gas-fired water heaters having a vertically water. Then, initiate normal operation of the criteria. For gas- and oil-fired water heaters,

discharging draft hood outlet, a 5-foot (1.5 water heater, and once again determine the initiate successive draws when the

meter) vertical vent pipe extension having a maximum mean tank temperature after cut- thermostat acts to reduce the supply of fuel

diameter equal to the largest flue collar size out. Repeat this sequence until the maximum to the main burner. For electric water heaters

of the draft hood shall be connected to the mean tank temperature after cut-out is within having a single element or multiple elements

draft hood outlet. For gas-fired water heaters the range of 135°F+50 F (57.2°C±2.8C). that all operate simultaneously, initiate

having a horizontally discharging draft hood I an eletric water heater has two or more successive draws when the thermostat acts to

outiet, a 90-degree elbow having a diameter thermostats, the thermostat that controls the reduce the electrical input supplied to the

equal to the largest flue collar size of the draft upper-mot heating element shall beset firt element(s). For electric water heaters having

hood shallbe conneca maximum water temperature of two or more elements that do not operate

outlet. A 5-foot (1.5 meter) length of vent 135F±5F (57.25C±2.80C). as measured by simultaneously, initiate successive draws

pipe shall be c eted tonth ow and the in-tank sensors that are positioned above when the applicable thermostat acts to pipenshallbe connected to the elbow and the upper-most heating element. Thent oriented to discharge vertically upward. h re d uc e the rs a the contr ol t he element Dirented to discharge verticaly uward. thermostat that controls the heating element located vertically highest in the storage tank. Direct vent gas-fired water heaters shall be i positioned next highest in the tank shall then For heat pump water heaters that do not use installed with venting equipment specified in be set to yield a maximum water temperature at he er that do not use the manufacturer's instructions using the of 135°F±5°F (57.2°CI±2.8C). This process supplemental resistive heating, initiate

minimum vertical and horizontal lengths of shall be repeated until the thermostat successive draws immediately after the

vent pipe recommended by the manufacturer.controlling the lowest element is correcl electrical input to the compressor is reduced vent pipe recommended by the manufacturer controlling the lowest element is correctly the action ofthe water heater's thermostat. 4.9.2 Oil-Fired Water Heaters. Establisha adjusted When When adjusting the thermostat thatb thedthermostat.that by the aution of the theater's thermosat. draft at the flue collar as specified in the controls he lowest element, the maximum For heat pump water heaters that do use

manufacturer's literature. Establish the draft mean tank temperature after cut-out as supplemental resistive heating, nitiate

by using a sufficient length of vent pipe determined using all the in-tank sensors, successive draws immediately after the

connected to the water heater flue outlet and shall be within 135°F±5°F (57.2°Ci2.8°C). electrical input to the compressor or the

directed vertically upward. For an oil-fired When adjusting all other thermostats, use uppermost resistive element is reduced by

water heater having a horizontally only the in-tank temperature sensors the action of the applicable water heater

discharging draft hood outlet, a 90-degree positioned above the heating element in thermostat. This draw initiation criterion for

elbow having a diameter equal to the largest question to evaluate the maximum water heat pump water heaters that use

flue collar size of the draft hood shall be temperature after cut-out supplemental resistive heating, however,

connected to the draft hood outlet. A length For heat pump water heaters, which shall only apply when the water located

of vent pipe sufficient to establish the draft. control an auxiliary resistance element, the above the thermostat at cut-out is heated to

shall be connected to the elbow fitting and thermostat shall beset in accordance with 135F f5°F (57.2°C±2.8°C).

oriented to discharge vertically upward. the manufacturer's nstallation instructions. 5.1.4.3 Test Sequence. Establish normal

Direct vent oil-fired water heaters should be 5.1.3 Power Input Determination. For a water heater operation. If the water heater is

installed with venting equipment as specified water heaters except electric types having not presently operating, initiate a draw. The

in the manufacturer's instructions, using the immersed heating elements, initiate normal draw may be terminated anytime after cut-in

minimum vertical and horizontal lengths of operation and determine the power input, P, occurs. Once cut-out occurs (e.g., all

vent pipe recommended by the manufacturer. to the main burners (including pilot light thermostats satisfied), monitor the internal

4.10 Heat Pump WaterHeater Storage power, if any) after 15 minutes of operation. storage tank temperature sensors described in

Tank. The heat pump water heater storage If the water heater is equipped with a gas section 4.5 every minute. For each set of

tank to be used for testing a heat pump water appliance pressure regulator, the regulator measurements, calculate the mean tank

heater without a tank supplied by the outlet pressure shall be set within *10% of temperature. If any of these mean values are

manufacturer shall have a volume of 47.0 that recommended by the manufacturer. For outside the range specified in section 2.4,

gallons ±1.0 gallon C 180±4 liters with an oil-fired water heaters the fuel pump adjust the thermostat(s) as specified in

Energy Factor of 0.87±.01 as determined in pressure shall be within ±10% of the section 5.1.2 and reevaluate the mean tank

accordance with Section 6.1.7 with two 4.5 manufacturer's specified pump pressure. All temperature after all thermostats are again

kW heating elements controlled in such a burners shall be adjusted to achieve an satisfied.

manner as to prevent both elements from hourly Btu (kD rating that is within ±2% of Initiate a draw after a maximum mean tank

operating simultaneously. the value specified by the manufacturer. For temperature has been observed following cut-

-*~ T ,an oil-fired water heater, adjust the burner to out. Record the time when the draw is 5. Test Procedures gie a C2 reading recommended by the initiated and designate it as an elapsed time give a CO2 reading recommended by the lapsed time

5.1 Storage-Type Water Heaters, manufacturer and an hourly Btu (kJ) rating of zero, (X* - 0). The superscript * is used to

Including Heat Pump Water Heaters. that is within ±2% of that specified by the denote variables pertaining to the first hour

5.1.1 Determination of Storage Tank manufacturer. Smoke in the flue may not rating test. Record the outlet water

Volume. Determine the storage capacity, Vst,' exceed No. 1 smoke as measured by the temperature beginning 15 seconds after the

of the water heater under test, in gallons procedure in ASTM-D-2156-80. draw is initiated and at 5 second intervals

(liters), by subtracting the tare weight- 5.1.4 Frst Hour Rating Test. thereafter, until the draw is terminated.

measured while the tank is empty-from the 5.1.4.1 General. During hot water draws, Determine the maximum outlet temperature

gross weight of the storage tank when remove water at a rate of 3.00*0.25 gallons that occurs during this first draw and record

EE-RM-94-230 COMMENT 49L

15344 Federal Relister / Vol. 60. No. 56 / Thursday,' March 23. 1995 / Proposed Rules 

4.6. Ambient Temperature. The ambient 

'air temperature shall be measUJ'!'!d 

approximately at the vertical mid-point of the 

water heater and approximately 2 feet (60 

centimeters) from the surface of the water 

heater. 1be sensor shall be.shielded against 

radiation. 

4.7 Inlet and Oudet Water Temperature 

Measurements. Install temperature sensors in . .the cold-water inlet pipe and hot-water outlet .. pipe as shOwn in FigUres 1, 2, 3, or 4a and 

4b, as applicable. 

4.B Flow Control. A flow control valve 

shall be installed to provide flow as specified 

·in Section S.· . 

4.9 Flue Requirements; 

4.9.1 Gas-Fired Water Heaters. Establish a 

natural draft in the following manner. For 

gas-fired water heaters having a vertically 

discharging draft hood outlet, as-foot (1.S 

meter) vertical vent pipe extension having a 

diameter equal to the largest flue collar size 

of the draft hood shall be connected to the 

dnift hood outlet. For. gas-fired water heaters 

having a horizontally discharging draft hood 

outlet, a 90-degree elbow having a diameter 

equal to the laig~t flue collar size of the draft 

hOod shall be connected to the draft hood 

outlet.· A S-foot (I.S meter) length of vent 

pipe shall be connected to the elbow and 

oriented to discharge vertically upward. 

Direct vent gas-fired water heaters shall be 

installed with venting equipment spedfied in 

the manufacturer's instructions using the 

minimum vertical·and horizontal lengths of 

vent pipe recommended by the manufacturer. 

4.9.2 Oil-Fired Water Heaters. Establish a 

draft at the flue collar as spedfied in the 

manufacturer's literature. Establish the draft 

by using a suffident length ofvent pipe 

connected to the water heater flue outlet and 

directed vertically upward. For an oil-fired 

water heater having a horizontally 

discharging draft hood outlet, a 90-degree 

elbow having a diameter eqUal to the largest 

flue collar size of the draft hood shall be 

connected to the draft hoOd outlet. A length 

of vent pipe suffident to establish the draft, 

shall be connected to the elbow fitting and 

oriented to discharge vertically upward. , 

Direct vent oil-fired water heaters should be 

installed with venting equipment as specified 

in the manufacturer's instructions, using the 

minimum vertical and horizontal lengths of, 

vent pipe recommended by the manufactUrer. 

4.10 ,Heat Pump Water Heater Storil/le , Tank. The heat pump water' heater storage,· 

tank to be used for testing a heat pump water 

heater without a tank supplied.by the 

manufacturer shall have a volume of 47.0 

gallons ±1.0 gallon C IB0±4 liters with an 

Energy Factor ofO.S7±.01 as determined in 

accordance with Section 6.1. 7 with two 4.S 

kW heating elements controlled in such a manner as to prevent both elements from 

operating simultaneously. 

5. Test Procedures 

S.1 StoTillle-Type Water Heaters, 

Including Heat Pump Water Heaters. 

5.1.1 Detennmatlon of Storil/le Tank 

Volume. Determine the storage capacity, Vst, ' 

of the water heater under test,· in gallons 

(liters), by subtracting the tare weightmeasured while the tank is empty-from the • 

gross weight of the storage tank when 

completely ruled with water (with all atr 

eliminated and line pressure applied as 

described in section 2.S) and dividing the 

resUlting netweight by the density of water. 

Density shall be evaluated based on the 

temperature of the stored water. ' 

S.I;2 Setting the Thermostat for a Thermostatically Operated Water Heater. 

Starting with a tank·of supply water, initiate 

normal operation' of the water he,ater. After, 

cutout, determine the mean tank temperature 

(based on all of the in-tank sensors) every 

minute until the maximum value is observed. 

Determine whether this maximum value for 

the mean tank temperature is within the 

range of 13SDf±5DF (S7.2DC±2.SDC): If not, 

tum off the water heater, adjust the 

thermostat, and refill the tank with supply 

water. Then; initiate normal operation of the 

water heater, and once again detemiine the 

rDaxtmum mean tank temperature after cutout. Repeat this sequence until the maximum mean tank temperature after cut-out is within 

the range of 13SDF±SDF (S7.2DC±2.SDC). 

• If an eleCtric water heater has two .or more, 

thermostats, the thenilostat that controls the 

upper-moSt heating element shall be set first 

to yield a maximum water temperature of 

13SDF±5DF (S7.2DC±2.SDC), as measured by 

the in-tank sensors that are positioned above 

the upper-most heating element. The 

thermostat that controls the heating element 

positioned next highest in the. tank shall then 

be set to Yield a maximum water temperature 

of 13SDF±5DF (S7.2DC±2.S~C). This process 

shall be repeated until the thermostat . 

controlling the lowest element is correctly 

adjusted. When adjusting the thermostat that . 

controls the lowest element, the maximum 

mean tank temperature after cut-out, as· 

determined using all the in-tank sensors, ' 

shall be within 13SDF±SDF (S7.2DC±2.SDC). 

When adjUsting all other thermostats, use 

only the in-tank temperature sensors 

positioned above the heating element in 

question to evaluate the maximum water 

temperature after cut-out. 

For heat pump water heaters, which 

control an auXiliary resistance element, the . , thermostat shall be set in accordance with . 

, the manufacturer's inStallation instructions. 

S.I.3 Power Input Determination. For all 

water heaters except electric types having 

immersed heating elementS, initiate normal 

operation and determine d\e power input, p, 

to the main burners (including pUot light 

power, if any) after IS riunutes of operation. 

If the water heater is equipped with a gas 

applliuice pressure regulator, the regulator 

outlet pressure shall be !Mil within ±10% of 

that recommended by the manufacturer. For 

oil-fired water heaterS the fuel pump 

pressure shall be within±10% of the 

manufacturer's specified pump pressure. All . burners shall be adjusted to achieve an 

hOurly Btu (kJ) rating that is within±2% of 

the value specified by the manufacturer. For 

ari oil-fired water heater, adjust the burner to 

give a C02 reading recommended by the 

manufacturer and an hourly Btu (kJ) rating 

that is within ±2% of that specified by the 

manufacturer. Smoke 1n the flue may not 

exceed No. 1 smoke as measured by the 

procedure in ASTM-D-21S6-SO. 

S.1.4 . FlrstHourRatingTest. 

S.1.4.1 General. Durtng hot water draws, remove water at a rate of 3.00±0.2S gallons 

per minute (I 1.4:I:D.9Sliters per minute) for 

units with rated storage capacitieS of 20 

, gallons (76 li~rs) or more and 1.0:i:0.2S 

gallons per minute (3.8:tO.9S liters per 

minute) for units with rated~orage 

capacities less than 20 gallons (76 liters). 

Collect the water in a container that is large 

. enough to hold the volume removed during 

an individual draw and suitable for weighing 

at the termination of each draw. 

Alternatively, a water meter may be used to 

directly measure the water volume{s) 

withdrawn. 

,S.1.4.2 Draw InItiation Criterion. Begin 

the first hour rating test by imposing a draw 

on the storage-type water heater. After 

completion of thisOrst draw, initiate 

successive draws based on the following 

criteria. For gas- and oU-fired water heaters, 

initiate successive draws when the 

thermostat acts to reduce the supply of fuel 

to the maln burner. For electric water heaters 

having a single ,element or multiple elements 

that all operate simultaneously, initiate 

successive draws when the thermostat acts to 

reduce the electrical input suppUed to the 

element{s). For electric water heaters having 

tWo or more elements that do not operate 

simultaneously, initiate successive draws 

when the applicable thermostat acts to 

reduce the electrical input to the elel1lent 

located vertically highest in the storage tank. 

For heat pump water heaters that do not use 

supplemental reSistive hea~g, initiate 

successive draws immediately after the 

electrical input to the compressor is reduced 

by the action of the wa~r heater's thermostat. 

For heat pump water heaters that do use 

supplemental reS~tive heating, initiate 

successive draws immediately after the ., 

. electrical input to the co~pressor or the 

uppermost resistive element is reduced by 

the action of the appUcable water heater 

thermostat. This draw initiation criterion for , heat pump water heaters that use 

supplemental resistive heating, however, 

shall only apply when the water located 

above the thermostat at cut-out is heated to 

13SDF ±SDF (S7.2DC±2.SDC). , 

S.1.4.3 Test Sequence. Establish normal 

:water heater operation.· If the water heater is 

not presently oPerating, initiate a draw. 1be 

draw may be terminated anytime after cut-in 

occurs. Once cut-out occurs (e.g., all 

thermostats satisfied), monitor the internal 

storage tank temperature sensors described in 

section 4.S every minute. For each set of 

measurements" calculate the mean tank 

temperature. If any of these mean values are 

outside the rarige specified in section 2.4, 

adjust the thennostat{s) cis specified in 

section S .1.2 and reevalliate the mean tank ' 

temperature after all thermostats are agaln 

satisfied. 

Initiate a draw after a maximum mean·tank 

temperature has been observed folloWing cut- \ 

out. Record the time when the draw is 

initiated and designate it as an elapsed time 

of zero, (,;. - 0). The superscript * is used to 

denote, variables pertaining to the Orst hOur 

rating test. Record the outlet water 

, temperature beginning IS seConds after the 

draw is initiated and at S second intervals 

thereafter, until the draw is terminated.' 

Determine, the maximum outlet temperature 

that occurs during this Orst draw and record 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15345

it as T*m,i,. For the duration of this first pressure as described in section 2.5. Turn on T,i,. and the energy consumed by a gas or

·draw and all successive draws, in addition, the water heater and associated heat pump oil water heater, Qr. For heat pump water

monitor the inlet temperature to the water unit, if present. After the cutout occurs, heaters, the total electrical energy consumed

heater to assure that the required 58°F±2°F measure the mean tank temperature using the by the heat pump (including compressor, fan,

(14.4°C ± 1.1°C) test condition is met. temperature sensors described in section 4.5 controls, pump, etc.) and, If applicable, by

Terminate the hot water draw when the every minute until the maximum mean the resistive element(s) during the first

outlet temperature decreases to T'm., - storage tank temperature is achieved. If this recovery shall be recorded as Qr. In addition,

25°F (T*i, -13.9 0C). Record this maximum mean temperature is outside the the total operating time of the compressor

temperature as T*,-i 1. Following draw range specified in section 2:4, adjust the during the first recovery shall be determined

termination, determine the average outlet thermostat(s) as specified in section 5.1.2 and and recorded as rpi. Finally, for heat pump

water temperature and the mass or volume reevaluate the mean tank temperature after water heaters that use resistive heating

removed during this first draw and record all thermostats are again satisfied. After during the first recovery, the electrical energy

them as T*d.L, and M'* or V'i, respectively, thermostat adjustments are completed, the consumed by the resistive element(s) shall be

Initiate a second and, if applicable, water heater may be operated for up to three separately metered and recorded, Qr»,i.

successive draws each time the applicable cycles of drawing until cut-in and then At the end of the recovery period that

draw initiation criterion described in section operating until cut-out, prior to the start of follows the sixth draw, determine and record

5.1.4.2 is satisfied. As required for the first the test. the total electrical energy and/or fossil-fuel

draw, record the outlet water temperature At this time, record the mean tank consumed since the beginning of the test, Q.u.

beginning 15 seconds after initiating each temperature (To). and the electrical and/or In preparation for determining the energy

draw and at 5 second intervals thereafter fuel measurement readings, as appropriate. consumed during stand-by, record the

until the draw is terminated. Determine the Begin the 24-hour simulated use test by reading given on the electrical energy (wattmaximum outlet temperature that occurs withdrawing a volume from the water heater hour) meter, the gas meter, and/or the scale

during each draw and record it as T'.i, that equals one-sixth of the daily hot water used to determine oil consumption, as

where i refers to the draw number. Terminate usage. Record the time when this first draw appropriate. Record the maximum value of

each hot water draw when the outlet , is initiated and assign it as the test elapsed the mean tank temperature after cutout as T~iu.

temperature decreases to Tmi,i - 250F time (r) of zero. Record the average, storage Except as noted below, allow the water

(T~'m, - 13.9°C). Record this temperature as tank and ambient temperature every 15 heater to remain in the standby mode until

T'.mii. Calculate and record the average minutes throughout the 24-hour simulated 24-hours have elapsed from the start of the

outlet temperature and the mass or volume use test unless a recovery or a draw is test; i.e., since =r 0. Prevent the water heater

removed during each draw (T*ide,i and M*i or occurring. At elapsed time Intervals of one, from beginning a recovery cycle during the

V'i). Continue this sequence of draw and two, three, four, and five hours from r = 0, last hour of the test by turning off the electric

recovery until one hour has elapsed, at which initiate additional draws removing an power to the electrical heating elements and

time the electrical power and/or the fuel amount of water equivalent to one-sixth of heat pump, if present, or by turning down the

supplied to the water heater shall be the daily hot water usage with the maximum fuel supply to the main burner at an elapsed.

disconnected and/or terminated, allowable deviation for any single draw being time of 23 hours. If a recovery is taking place

If a draw is occurring at an elapsed time ±0.5 gallons (±1.9 liters) for units having at an elapsed time of 23 hours, wait until the

of one hour, continue this draw until the rated storage capacities of 20 gallons (76 recovery is complete before reducing the

outlet temperature decreases to T*.mu - liters) or greater, and ±0.1 gallons (0.4 liters) electrical and/or fuel supply to the water

25°F (T-'-,. - 13.9°C), at which time the for units having rated storage capacities less heater. At 24 hours, record the mean tank

draw shall be immediately terminated. The than 20 gallons (76 liters). The quantity of temperature, T24 , and the electric and/or fuel

subscript u shall be used to denote quantities water withdrawn during the sixth draw shall instrument readings. Determine the total

associated with the final draw. If a draw is be increased or decreased as necessary such fossil fuel or electrical energy consumption,

not occurring at an elapsed time of one hour, that the total volume of water withdrawn as appropriate, for the entire 24-hour

a final draw shall be imposed at one hour. equals: 64.3±1.0 gallons (243.4±3.8 liters) for simulated use test, Q. Record the time

'This draw shall be immediately terminated water heaters having rated storage capacities interval between the time at which the

when the outlet temperature first indicates a of 20 gallons (76 liters) or more, 24±0.5 maximum mean tank temperature is observed

value less than or equal to the cut-off gallons (90.8±1.9 liters) for water heaters after the sixth draw and the end of the 24-

temperature used for the previous draw having rated storage capacities less than 20 hour test as abyl. Record the time during

'T*mi). For cases where the outlet gallons (76 liters) but greater.than or equal to which water was not being withdrawn from

temperature is close to T*ni,.;t, the final 10 gallons (38 liters), and 9.0±0.5 gallons the water heater during the entire 24-hour

draw shall proceed for a minimum of 30 (34.1±1.9 liters) for water heaters having period as ct,2t.

seconds. If an outlet temperature greater than rated storage capacities less than 10 gallons 5.2 Instantaneous Water Heaters.

T'*i., 1 is not measured within 30 seconds, (38 liters). 5.2.1 Setting the Outlet Discharge

the draw shall be immediately terminated All draws during the simulated use test Temperature. Initiate normal operation of the

and zero additional credit shall be given shall be made at flow rates of 3.0±0.25 water heater at the full input rating. Monitor

towards first hour rating (i.e., M*u = 0 or V* gallons per minute (11.4±0.95 liters per the discharge water temperature and set to a

= 0). Once the final draw is terminated, minute) when testing water heaters having value of 135 0

F±50F (57.2°C±2.8°C) in

calculate and record the average outlet rated storage capacities of 20 gallons (76 accordance with the manufacturer's

temperature and the mass or volume liters) or more. For water heaters having rated instructions. If the water heater is not capable

removed during the draw (T'd.o, and M'. or storage capacities less than 20 gallons (76 of providing this discharge temperature when

V'n). liters), flow rates of 1.0±0.25 gallons per the flow rate is 3.00±0.25 gallons per minute

5.1.5 24-Hour Simulated Use Test. During minute (3.8±0.95 liters per minutes) shall be (11.4±0.95 liters per minute), then adjust the

the simulated use test, a total of 64.3 ±1 achieved. Measurements of the inlet and flow rate as necessary to achieve the

gallon (243±4 litbrs) shall be removed if the outlet temperatures shall be made beginning specified discharge water temperature.

rated storage tank volume is 20 gallons (76 15 seconds after the draw is initiated and at Record the corresponding flow rate as.V,,.

liters) or greater. If the rated storage tank every subsequent 5 second interval If the instantaneous water heater

volume is less than 20 gallons (76 liters) but throughout the duration of each draw. The incorporates a controller that permits

greater than or equal to 10 gallons (38 liters), arithmetic mean of the hot water discharge continuous burner or electric heating element

a total of 24±0.5 gallon (91±1.9 liters) shall temperature and the cold water inlet operation at a reduced input rate, adjust the

be removed; and if the rated storage tank temperature shall be determined for each flow rate as necessary to achieve a discharge

volume is less than 10 gallons (38 liters), a draw (Tad,i and Ti,,). Determine and record water temperature of 135°F±5°F

total of 9±0.5 gallon (34±1.9 liters) shall be the net mass or volume removed (Mi or Vi, (57.2°C±2.8°C) while maintaining the

removed. These values are referred to as the as appropriate, after each draw. minimum input rate. Record the

daily hot water usage in the following text. At the end of the recovery period following corresponding flow rate as V,,. If an outlet

With the water heater turned off, fill the the first draw, record the maximum mean temperature of 135"±50F (57.2°C±2.8°C)

water heater with supply water and apply tank temperature observed after cut-out, cannot be achieved at the minimum flow rate

EE-RM-94-230 COMMENT 49L

• 

Federal Register / Vol. 60, No, 56 / Thursday, March 23, 1995 / Proposed Rules 15345 

it as T" """,1, For the duration of this first 

·draw and all successive draws, in addition,. 

monitor the inlet temperature to the water 

heater to assure that the required 58°F±2°F 

(14.4°C ± 1.1 DC) test condition is met. 

Terminate the hot water draw when the 

outlet temperature decreases to TO max, I -

25°F (T" -.1 -13.9°C). Record this 

temperature as T°mia,I. Following draw 

termination, determine the average outlet 

water temperature and the mass or volume 

. removed during this first draw and record 

'them as tOdo1.1 and MOl or VOl, respectively. 

Inttiate a second and, if applicable, 

successive draws each time the applicable' 

draw tni tiation criterion described in section 

5.1.4.2 is satisfied. As required for the first 

draw, record the outlet water temperature 

beg1nn1ng 15 seconds after initiating each 

draw and at 5 second intervals thereafter 

untll the draw is terminated. Determine the 

maximum outlet temperature that occurs 

during each draw and record it as TO """,.i, 

where i refers to the draw number. Terminate 

each hot water draw when the outlet 

temperature decreases to T" max,i - 25°F 

(T0max,i - 13.9°C). Record this temperature as 

TO mia,i. Calculate and record the average 

outlet temperature and the l1!ass or volume 

removed during each draw (To do!,i and MOi or 

VOJ. Continue this sequence of draw and 

recovery untll one hour has elapsed, at which 

time the elecirica1 power and/or the fuel 

supplied to the water heater shall be 

disconnected and/or terminated. 

If a draw is occurring at an elapsed time 

of one hour, continue this draw untll the 

outlet temperature decreases to TOJIIU,D -

25°F (T0""",,D - 13.9°C), at which time the 

draw shall be immediately terminated. The 

subscript a shall be used to denote quantities 

associated with the final draw. If a draw is 

not occurring at an elapsed time of one hour, 

a final draw shall be imposed at one hour. 

This draw shall be immediately terminated 

when the outlet temperature first indicates a . 

value less than or equal to the cut-off 

temperature used for the previous draw 

(To miD,D-I). For cases where the outlet 

temperature is close to T" miD,D-I, the final 

draw shall proceed for a minimum of 30 

seconds. If an outlet temperature greater than 

TO miD,D-1 is not measured within 30 seconds, 

the draw shall be immediately terminated 

and zero additional credit shall be given 

towards first hour rating (I.e., MOa = 0 or VOa 

= 0). Once the final draw is terminated. 

calculate and record the average outlet 

temperature and the mass oJ volume 

removed during the draw (To do\,D and MO a or 

V°,J. 

5.1.5 24-HourSimulated Use Test. During 

the simulated use test, a total of 64.3 ±1 

gallon (243±4 liters) shall be removed if the 

rated storage tank volume is 20 gallons (76 

liters) or greater. If the rated storage tank 

volume is less than 20 gallons (76 liters) but 

greater than or equal to 10 gallons (38 liters), 

a total of 24±0.5 gallon (91±1.9 liters) shall 

be removed; and if the rated storage tank 

volume is less than 10 gallons (38 liters), a 

total of 9±0.5 gallon (34±1.9 liters) shall be 

removed. These values are referred to as the 

daily hot water usage in the following text. 

With the water heater turned off, ft11 the 

water heater with supply water and apply 

. . . . 

pressure as described in sectiori '2.5. Turn on 

the water heater and associated heat pump 

unit, if present. After the cutout occurs, 

measure the mean tank temperature'using the 

temperature sensors described in section 4.5 

every minute untll the maximum mean 

storage tank temperature is achieved. If this 

maximum mean temperature is outside the 

range specified in section 2:4, adjust the 

thermostat(s) as specified in section 5.1.2 and 

reevaluate the mean tank temperature after 

all thermostats are again satisfied. After 

thermostat adjustments are completed, the 

water heater niay be operated for up to three 

cycles of drawing untll cut-in and then 

operating untll cut-out, prior to the start of 

the test. 

At this time, record the mean tank 

temperature (to), and the elecirical and/or 

fuel measurement readings, as appropriate. 

Begin the 24-hour simulated use test by 

withdrawing a volume from the water heater 

that equals one-sixth of the daily hot water 

usage. Record the time when this first draw 

is initiated and assign it as the test elapsed 

time (t) of zero. Record the average. storage 

tank and ambient temperature every 15 

minutes throughout the 24-hour simulated 

use test unless a recovery or a draw is 

occurring. At elapsed time intervals of one, 

two, three, four, and five hours from t = 0, 

initiate additional draws remOving an 

amount of water equivalent to one-sixth of 

the dally hot water usage with the maximilin 

allowable deviation for any single draw being 

±D.5 gallons (±1.9 liters) for units having 

rated storage capacities of 20 gallons (76 

liters) or greater, and ±D.l gallons (0.4 liters) 

for units having rated storage capacities less 

than 20 gallons (76Uters). The quantity of 

water withdrawn during the sixth draw shall 

be increased or decreased as necessary such 

that the total volume of water withdrawn 

equals: 64.3±1.0 gallons (243.4±3.8 liters) for 

water heaters having rated storage capacities 

of 20 gallons (76 liters) or more, 24±0.5 

gallons (90.8±1.9 liters) for water heaters 

having rated storage capacities less than 20 

gallons (76 liters) but greater,than or equal to 

10 gallons (38 liters), and 9.0±0.5 gallons 

(34.1±1.9liters) for water heaterS having 

rated storage capacities less than 10 gallons 

(38 liters) .. 

All draws during the simulated use test 

shall be made at flow rates of 3.0±0.25 

gallons per minute (11.4±O.95 liters per 

minute) when testing water heaters having 

rated storage capacities of 20 gallons (76 

liters) or more. For water heaters having rated 

storage capacities less than 20 gallons (76 

liters), flow rates of 1.O±O.25 gallons per 

minute (3.8±0.95 liters per minutes) shall be 

achieved. Measurements of the inlet and 

outlet temperatures shall be made beginning 

15 seconds after the draw is initiated and at 

every subsequent 5 second interval 

throughout the duration of each draw. The 

arithmetic mean of the hot water discharge 

temperature and the cold water inlet 

temper~ture shall_be determined for each 

draw (T do1,i and T ia.J. Determine and record 

, the net mass or volume removed (Mi or VJ, 

as appropriate, after each draw. 

At the end of the recovery period following 

the first draw, record the maximum mean 

tank temperature observed after cut-out, 

t """,.1, and the energy consumed by a gas or 

oil water heater, Qr. For heat pump water 

heaters, the total electrical energy consumed 

by the heat pump (including compressor, fan, 

controls, pump, etc.) and, if applicable, by 

the resistive element(s) during the first 

recovery shall be recorded as Q.. In addition, 

the total operating time of the compressor . 

during the first recovery shall be determined 

and recorded as temp.I' Finally,for heat pump . water heaters that use resistive heating 

during the first recovery, the electrical energy 

consumed by the resistive element(s) shall be 

separately metered and recorded, Q .... I. 

At the end of the recovery period that 

follows the sixth draw, determine and record 

the total electrical energy and/or fossil-fuel 

consumed since the beginning of the test, Qou. 

In preparation for determ1n1ng the energy 

consumed during stand-by, record the 

reading given on the electrical energy (watthour) meter, the gas meter, and/or the scale 

used to determine oil consumption, as 

appropriate. Record the maximum value o( 

the mean tank temperature after cutout as T .... 

Except as noted below, allow the water 

heater to remain in the standby mode untll 

24-hours have elapsed from the start of the 

test; i.e., since t = O. Prevent the water heater 

from beginning a recovery cycle during the 

last hour of the test by turotng off the electric 

power to the elecirical heating elements and 

heat pump, if present, or by turning down the 

fuel supply to the main burner at an elapsed. 

time of 23 hours. If a recovery is taking place 

at an elapsed time of 23 hours, wait Until the 

recovery is complete before redudng the 

electrical and/or fuel supply to the water 

heater. At 24 hours, record the mean tank 

temperature, t 24, and the electric and/or fuel 

instrument readings. Determine the total 

fossil fuel or electrical energy consumption, 

as appropriate, for the entire 24-hour 

simulated use test, Q. Record the time 

intelVal between the time at which the 

maximum mean tank temperature is observed 

after the sixth draw and the end of the 24-

hour test as tatby,l' Record the time during 

which water was not being withdrawn from 

the water heater during the entire 24-hour 

period as t.tby,2. 

5.2 Instantaneous Water Heaters. 

5.2.1 Setting.the Outlet Discharge 

Temperature. Inttiate normal operation of the 

water heater at the full input rating. Monitor 

the discharge water temperature and set to a 

value of 135°F±5QF (57.2°C±2.8°C) in 

accordance with the manufacturer's 

instructions. If the water heater is not capable 

of providing this discharge temperature when 

the flow rate is 3.00±0.25 gallons per minute. 

(I I.4±D.95 liters per minute), then adjust the 

flow r.;Ite as necessary to achieve the 

specified discharge water temperature. 

Record the corresponding flow rate asV ....... 

If the instantaneous water heater 

incorporates a controller that permits 

continuous burner or eleciric heating element 

operation at a reduced input rate, adjust the 

flow rate as necessary to achieve a discharge 

water temperature of I 35°F±5°F 

(57.2°C±2.8°C) While maintaining the 

minimum input rate. Record the 

corresponding flow rate as V miD. If an outlet 

temperature of 135°±5°F (57.2°C±2.8°C) 

cannot be achieved at the minimum flow rate 
15346 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

, . 0

permitted by the instantaneous water heater, elapsed since the start of the test, I.e., since 6. Computations

record the flow rate as Vmh and the r - 0. At 24 hours, record the reading given 6.1 StorageTank andHeatPump Water

corresponding outlet temperature as Tmi-. by the gas meter, the scale used forHe

25.2.2 Power Input Determination. Gas- determining 6il consumption, and/or the 6 S Tank Ca TThe

fired and oil-fired instantaneous water electrical energy meter as appropriate. rge T paty. torage

heaters shall have the burners adjusted to the Determine the fossil fuel or electrical energy tak capacity is computed using the

maximum firing rate specified by the .consumed during the entire 24-hour following

manufacturer. simulated use test and designate the quantity

5.2.3 FirstHourRating Testfor asQ. (Wf Wt )

Instantaneous Water Heaters. Establish 5.2.4.2 Variable Input InstantaneousV =

normal water heater operation at the Water Heaters. If the instantaneous water p

maximum input rate with the discharge heater incorporates a controller that permits Where:

water temperature set in accordance with continuous operation ata reduced input rate,

section 5.2.1. During the test, do not interrupt the first three draws shall be conducted using Vtthe storage capacity of the water heater,

the electrical energy or fossil fuel supplied to the maximum flow rate, Vm., while gal L).

the water heater. During the one hour test, removing an amount of water equivalent to Wf-the weight of the storage tank when

either collect the withdrawn water for later one-sixth of 64.3 gallons (243 liters), with the completely filled with water, Ibm (kg).

measuring the total mass removed, or maximum allowable deviation for any one of Wt-the (tare) weight of the storage tank when

alternatively; use a water meter to directly the three draws being d0.5 gallons (2 liters). completely empty, Ibm (kg)

measure the water volume removed. The second three draws shall be conducted p-the density of water use to fill the tank;

Begin with the water flow rate temporarily at Vmn. If an outlet temperature of 135°F±5°F evaluated based on the temperature of

discontinued. Record the scale or water . (57.2°C±2.8°C) could not be achieved at the the water, Ibm/gal (kg/L).

meter reading as appropriate. Initiate a draw minimum flow rate permitted by the 6.1.2 First Hour Rating Computation. For

and record the corresponding time. Record nstantaneous water heater, the lastthree water heaters where the final draw was the inlet and outlet water temperatures draws should be lengtheninitiated suchthatpriorto elapsed time of one

beginning 15 seconds after'the draw is volume removed is: hour, the first hour rating shall be computed

initiated and at every subsequent 5 second using, interval throughout the duration of the draw. 643 gal 77 F

At the end of one hour terminate the draw. V4 6 =- x

Determine the mass of water withdrawn, 6 ( -58°F)F = MPHRm in pounds (kilograms), or the volume , i=l

of water withdrawn, VaHR, in gallons (liters) or Wh

with an error no greater than 2 percent.

5.2.4 24-Hour Simulated Use Test n-the number of draws that are completed

5.2.4.1 Fixed Input Instantaneous Water during the first hour rating test.

Heaters. Establish normal operation with the 243L 42.80C V*i-the volume of water removed during the

discharge water temperature and flow rate set V4,5,

6 =-x \ th draw of the first hou rating test, gal

to values of 135°F±5°F (57.2°C±2.80 C) and6 Tn - 14 4C)

V,, respectively. With no draw occurring, wherethe maximum allowable variation for

record the reading given by the gas meter, theany one of the three draws s .5 gaons scal used for determining oil consumption, · any one of the three draws is ± 0.5 gallons scale sed fr determining oil consmptin (2 liters). The quantity of water withdrawn M

and/or the electrical energy meter as during the sixth draw shall be increased or V = appropriate. Begin the 24-hour simulated use decreased as necessary such that the total P

test by drawing an amount of water out of the volume of water withdrawn equals Where

water heater equivalent to one-sixth of the (32.15+3xV4

,,)± .0 gallonsWhere

daily hot water usage, 64.3.gallons (243 ((121.7+3xV4s 6)3.8 liters). M*ithe mass of water removed during the

liters). Record the time when this first draw Measurements of the inlet and outlet water ith draw of the first hour rating test, Ibm

is initiated and designated It as an elapsed temperatures shall be made beginning 15 (kg). time, , of 0. Atelapsed time intervals of one, seconds after a draw is initiated and at every pthe water density corresponding to the

two, three, four, and five hours from -m 0, 5 second interval throughout the duration of average outlet temperature measured

initiate additional draws removing an the draw. Determine the arithmetic mean of during the ith draw (*si), Ibm/gal (kg/

amount of water equivalent to one-sixth of the hot water discharge temperature and the L).

64.3 gallons (243 liters), with the maximum cold water inlet temperature for each draw. For water heaters-where adraw was not in

allowable deviation for any single draw being Record the scale used to measure the mass progress at the elapsed time of one hour and

.+0.5 gallons (*2 liters). The quantity of water of the withdrawn water or the water meter a final draw was imposed at the elapsed time

drawn during the sixth draw shall be reading, as appropriate, after each draw. At of one hour, the first hour rating shall be

increased or decreased as necessary such that the end of the recovery period following the calculated using the total volume of water withdrawn equals first draw, determine and record the fossil

64.3±1.0 gallons (243±4 liters). fuel or electrical energy consumed, Qa. , . Measurements of the inlet and outlet water Likewise, record the reading of the meter or m.n- l

temperatures shall be made beginning 15 scale used to measure fossil fuel or electrical hr = i + * *n 

seconds after the draw is initiated and at energy consumption prior to the fourth draw . i=l Tn-de -l

every 5 second interval throughout the and at the end of the recovery period ' ' duration of the draw. The arithmetic mean of following the fourth draw, and designate the w he n d a re t h e s a e q as

the hot water discharge temperature and the difference as Qria. Following the sixth draw def n ed a

bove a nd,

cold water inlet temperature shall be and subsequent recovery, allow the water T*di*a- I

= the average water outlet

determined for each draw. Record the scale heater to remain in the standby mode until temperature measured during the

used to measure the mass of the withdrawn exactly 24 hours have elapsed since the start (n- l)th draw of the first hour rating test,

water or the water meter reading, as of the test, i.e., since Tr 0. At 24 hours, F (°C).

appropriate, after'each draw. At the end of record the reading given by the gas meter, the T*de.,=the average water outlet temperature

the recovery period following the first draw, scale used for determining oil consumption, measured during the nth (final) draw of

determine and record the fossil fuel or and/or the electrical energy meter, as the first hour rating test, °F (°C).

electrical energy consumed, Q, Following appropriate. Determine the fossil fuel or T*mi_ =the minimum water outlet

the sixth draw and subsequent recovery, electrical energy consumed during the entire temperature measured during the

allow the water heater to remain in the 24-hour simulated use test and designate the (n- I)th draw of the first hour rating test,

standby mode until exactly 24 hours have quantity as Q. °F (C).

EE-RM-94-230 COMMENT 49L

15346 Federal Register / Vol. 60, No. 56 I Thursday, March 23; 1995 /Proposed Rules 

pennltted by the instantaneous water heater. 

record the Dow rate as VmJa and the 

correspondtrig outlet temperature as T mJa· ' 

2S.2.2 Powet' Input Determination. Gasfired and oU-fired instantaneous water 

heaters shall have the burners adjusted to the 

maximum ftr1ng rate specified by the ' 

manufacturer. 

S.2.3 First HourRatlnlJ Test for 

Instantaneous Water Heaters. Establish 

normal water heater operation at the 

maximum input rate with the discharge 

water temperature set in accordance with 

section S.2.1. During the test. do not interrupt 

the electrical energy or fossil fuel supplied to 

the water heater. During the one hour test. 

either collect the withdrawn water for later 

measuring the totalmaSs removed. or 

alternatively; ~ a watermetei" to directly measure the water volume removed. ' 

Begin with the water Dow rate temporartly 

discontinued. Record the scale or water 

meter reading as appropriate. Initiate a draw 

and record the corresponding time: Record 

elapsed since the start of the test. i.e .• since 

taO. At 24 hours. record the reading given 

by the gas meter. the scale used for 

, deteimining ail consumptiori. and/or the 

electrical energy meter as appropriate. 

Determine the fossil fuel or electrical energy 

, consumed during the entire 24-hOur 

Simulated use test and designate the quantity . asQ. ' 

S.2.4.2 ' Variable Input Instantaneous 

Watet' Heaters. H the instantaneous water 

heater incorporates a controller that permits 

continuous operation atia reduced input rate. 

the first three draws shall be conducted using 

the maximum Dow rate. V-.. while , removirig an amount of water equivalent to 

one-sixth of 64.3 gallons (243 liters). with the 

maximum allowable deviation for anyone of 

the three draws being :!:O.Sgallons (2liteis). 

The second three draws shall be conducted 

at Vmm. Han putlet temperature of 1 35°F±S"F 

(S7.2"C±2.S0C) could not be achieved at the 

minimum Dow rate permitted by the 

instantaneous water heater. the last three 

6. Computations 

6.1 Storage Tank and Heat Pump Watet' . 

Heaters. 

S.1.1 Storage Tank Capadty. The storage 

tank capacity is computed using the ' 

following: ' 

(w,-wt ) V. = ~~--.,;~ 

'p 

Where: 

V_the storage capadtyofthe water heater. 

gal (L). 

WFthe weight of the storage tank when 

completely ruled with water. Ibm (k,g). 

Wt=the (tare) weight of the storage tank when' 

completely empty. Ibm (kg) 

p=the denSity of water use to fill the tank; 

evaluated based on the temperature of . the water; Ibm/gal (kgIL). 

6.1.2 First Hour RatlnlJ Computation. For 

water heaters where the final draw was " the inlet and outlet water temperatures 

- beginning IS seConds after the draw is 

initiated and at every subsequent S second 

interval thfoughout the duration of the draw. 

At the end of one hour tennlnate the draw. 

Deternitne the mass of Water withdrawn. 

Mnm; in pounds (kilograms). or the volume 

of water withdrawn. VFHR. in gallons (liters) 

with an error no greater than 2 percent. 

, draws should be iengthened such that the 

volume removed is: • initiated at or prior to an ela~ time oCone 

hour. ' the first hour rating shall be computed 

using. 

or 

S.2.4 24-Hour Simulated Use Test 

S.2.4.I, Fixed Input Instantaneous Water [ 1 

Heaters, Establish normal operation with the V' = 243L x 42.8°C 

discharge water temperature and Dow rate set 4.5.6 _ 6' '(Tmm' -,14.40 C) to values of 13soF±soF (S7.2°C±2.S0C) and _ 

V-.. respectively. With no draw occurring. where the maximum allowable variation for 

record the reading given by the gas meter. the', anyone of the three draws is ± O.S gallons 

scale used for determining oil consumption. (2 liters). The quantity of water withdrawn 

and/or the electrical energy meter as during the sixth draw shall be increased or 

D 

Fbr = Lvt , i=l 

Where: 

n=the number of draws that are completed 

during the first hour rating test. 

V*iathe volume of water removed 'during the 

ith draw of the first hour rating test. gal (L). . 

appropriate. Begin p the 24-hour simulated use decreased as necessary suCh that the,total 

test by drawf!!g an amount of water out of the volume of water withdrawn equals 

water heater equivalent to one-stxth of ,the (32 .IS+3xV4.s,J±I,O gallons Where: 

daily hot water usage. 64.3 gallons (243 ,«121.7+3xV".s,J±3.Sliters). M*i=the mass of water removed during the 

liters). Record the time when this first draw Measurements of the inlet and outlet water ith draw of the first hour rating test. Ibm 

is initiated and designated it as an elapsed temperatures shall be made J>eginning IS (kg). , tillie. t. of O. At,elapsed time intervals of one. seconds after a draw is initiated and at every p .. ttte water density corresponding to the 

two. three. four. and five hours from t .. O. S second interval throughout the duration of average outlet tempet:!lture measured 

initiate,additional draws removing an the draw. Detennine the arithmetic mean of during the ith draw (T*clel.J; Ibm/gal (kg! 

amount of water equivalent to one-sixth of the hot water discharge temperature and the L). 

64,.3 gallons (243 liters). with the maXimum cold water inlet temperature for each draw. - For water heaters where a draw was not in 

-allowable deViation for any single draw being Record the scale used to measure the mass progress at the elapsed time of one hour and 

:!:O.~ gallons (±2liters). The quantity of water of the withdrawn water or the water meter a final draw was imposed at the elapsed time 

drawndurtJ:ig the sixth draw'shall be reading. as appropriate. after each draw. At of one hour. the first hour rating shall be 

increased or decreased as necessary such that the end of the recovery period following the calculated using. ' ' 1_ ' 

the total volume of water withdrawn equals first draw. detemiine and record the fossil 

64.3±1.0 gallons (243±4 liters). -fuel or electrical energy consumed. Q...-.. ' [. ' J 

Measureinents of the inlet and outlet water Likewise. record the reading of the meter or F ='~,V .• +v. f del.D - T~D-l -

temperatures shall be made begftming IS scale used to measure fossil fuel or electricalbr £.J 1 D. • 

seconds after the draw is initiated ,and at energy conswription prior to the fourth draW , j=l , T del.n-l - Tmin,n':'l 

every S second interval throughout the and at the end of the recovery period , ' where nand, V,*i are the sam, e qUantities as duration of the draw. The arithmetic mean of following the fourth dravy. and designate the th~ hot water discharge temperature and the difference as Q..,JillA. Following the sixth draw ' defined above and. ' 

cold water inlet temperature shall be and subsequent recovery. allow the water T* cIoI.a-l~the average water outlet 

determined for each draw. Record the scale ,heater to remain in the standby mode until temperature measured during the 

used ta measure the mass of the withdrawn exactly 24 houls have elapsed since the start (n - I)th draw of the first hour rating test. 

water or the water meter reading. as, ofthe test. i.e .• since t = O. At 24 'hours. OF (OC). 

appropriate. after'each draw. At the end of record the reading, given by the gas meter. the . T* cIoI.D~the average water outlet temperature 

the recovery period followirig the first draw. scale used for deterinining oil consumption. measured during the nth (final) draw of 

determine and record the fossil fuel or and/or the electrical energy meter. as _ the first hour rating test. OF (OC). 

electrical energy consumed. Q... Following' appropriate. Determine the fossil fuel or T* mia.A-l=the minimum Water outlet. 

the sixth draw ~ subseq'!ent recovery. electrical energy consumed during the entire . temperature measured during the 

allow the water, heater to remain in the 24-hour simulated use test and designate the (n -I)th draw. of the first hour rating test. 

standby mode until exactly 24 hours have quantity asQ. 'oF(OC). . 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15347

6.1.3 Recovery Efficiency. The recovery 6.1.4 Hourly Standby Losses. The hourly p-density of the stored hot water as

efficiency for gas, oil, and heat pump storage standby losses are computed as evaluated at (T24+To)/2, lbm/gal (kg/L).

type water heaters is computed as: Where: Cp-speciflc heat of the stored water as evaluated at (T24+To)/2, Btu/lb.m'F (kJ/ „/=; _=T \kg. O.

Ml del-pl I Tdel mnlC - .T24=mean tank temperature at the end of the

71 r- + -- V-t*pC_ 24_-Tsu) 24-hour simulated use test, °F (C).

Qr Qtby To-mean tank temperature at the beginning

V nP r P C pF _ '=* =r _______ OQhr of the 24-hour simulateduse test,

VstP2c p2 ( 1 max, l-hr T recorded one minute before the first

tlby1, -draw is initiated, °F ("C).

Q r Qhthe hourly standby energy losses of the r-recovery efficiency of the hot water

Where: water heater. Btu/hr (kJ/hr). heater, dimensionless.

Mi=total mass removed during the first draw Qay'the total energy consumed by the water 6.1.6 AdjustedDafly WaterHeating

of the 24-hour simulated use test, Ibm heater between the time at which the Energy Consumption. The adjusted daly

i(k0 ' maximum mean tank temperature is water heating energy consumption, Qd, takes

=V'~^IX'I' X Piobserved after the sixth draw and the into account that the temperature difference

V=total x volume removed during the firstend of the 24-hour test period, Btu (k. between the storage tank and surrounding

draw of the 24-hour sinmulad use test. V.=measured volume of the storage tank, as ambient temperature may not be the nominal

dgalw (L). ot determined in section 6.1.1, gal (L). value of 67.5°F (135°F-67.5°F) or 37.5°C

p galden ofL the) wtap=denslty . of stored hot water as evaluated at, (57.2°C-19.7°C) due to the 10°F (5.6°C) p,=Idensity of the water as evaluated at the (T24+T./2, Ib./gal (kg/L). allowable variation in storage tank

water temperature at the point where the Cpspeciflc heat of the stored water as temperature, 135*5°F (57.2±2.8°C), and the

flow volume is measured, lb,/gal (kg/L). evaluated at (T24+T 8J/2, Btu/lb=.°F (kJ/ 5°F (2.8°C) allowable-variation in

Cp i=specific heat of the withdrawn water as kg.oC). surrounding ambient temperature 65F

evaluated at C(Td.L + Tin, 1

)/2 Btu/lb,.-F T24=the mean tank temperature at the end of (18.3°C) to 70°F (21.1°C). The adjusted daily

(kJ/kg.K). the 24-hour simulated use test, °F (°C). water heating energy consumption is

Tds.ii=average water outlet temperature T,=,maximum mean tank temperature computed as: measured during the first draw of the 24- observed after the sixth draw. °F (°C)

hour simulated use test,°F (°C). I- tb.Xs, ielapsed time between the time atQ = Qd [(Tsb Tay)- Ti,.I=average water inlet temperature which the maximum mean tankmeasured during the first draw of the 24- temperature is observed after the sixth (135 0F-67.5 0F)IUAT , hour simulated use test,°F (°C). draw and the end of the 24-hourtby,2

Vtmeasured volume of the storage tank, as simulated use test, hr.

determined in section 6.1.1, gal (L). The standby heat loss coefficient for the

p2-density of stored hot water evaluated at tk is c d

(Tur. +To)/2, lb./gal (kg/L).tank s computed or Qda = Qd -[(sby -TaT.y)-

Cp 2=speciflc heat of stored hot water

evaluated at (fTm, ,+To)/2, Btu/lbm.°F (kl/ UA = (57.2 "C-19.7 °C)UArtby,2

kg.K). T ttby- ,stby T=.i,l=maximum mean tank temperature Where:

recorded after cut-out following the first Where Qd.the adjusted daily water heating energy

draw of the 24-hour simulated use test, Qhrdeflned in section 6.1.4. consumption. in Btu (kJ).

°F (°C). T,',,=overall average storage tank Ttby=the mean tank temperature during the

T,=maximum mean tank temperature temperature between the time when the total standby portion, Tby,, of the 24-

recorded prior to the first draw of the 24- maximum mean tank temperature is hour test, in °F (°C).

hour simulated use test, °F (°C). observed after the sixth draw and the T.,by=the average ambient temperature

Q,.l electrical energy used by the end of the 24-hour simulated use test, °F during the total standby portion, Tby,2,

supplemental resistive elements of a heat (

o

C) of the 24-hour test, in °F (°C).

pump water heater during the first T,,ay=overall average ambient temperature UA-the standby heat loss coefficient for the

recovery of the 24-hour simulated use between the time when the maximum storage tank, in Btu/hr. F (kJ/hr.°C).

test, Wh. mean tank temperature is observed after xry,2=the number of hours during the 24-

, ~ithe total operating time of the the sixth draw and the end of the 24- hour simulated test when water was not

compressor of a heat pump water heater hour simulated use test, °F (°C). being withdrawn from the water heater.

during the first recovery of the 24-hour UA-standby heat loss coefficient of the A modification is also needed to take into

simulated use test, hr. storage tank, Btu/hr.-F (kJ/hr.°C). account that the temperature difference

Q,=the total energy used by the water heater 6.1.5 Daily Water Heating Energy between the outlet water temperature and

between cut-out prior to the first draw Consumption. The daily water heating energy supply water temperature may not be

and cutout following the first draw, consumption, Qd is computed as: equivalent to the nominal value of 77°F

including auxiliary energy such as pilot (I 35°F- 58°F) or 42.8°C (57.2°C - 14.4°C).

lights, pumps, fans, etc., Btu MJ). V pC ( -T The following equations adjust the

(electrical auxiliary energy shall be Q = Q - t p 24 ) experimental data to a nominal 77°F (42.8°C)

converted to thermal energy using thed temperature rise.

following conversion: I Kwh-3412 Btu). The energy used to heat water, Btu/day (kJ/ Where: day) may be computed as: The recovery efficiency for electric water

heaters with immersed heating elements is Qtotal energy used by the water heater

assumed to b 98 percent. during the 24-hour simulated use test 6 M.C . TM, -Tin, I

including auxiliary energy such as pilot QHW )

lights, pumps, fans, etc.. Btu (kJ)

(Electrical auxiliary energy shall be i r

converted to thermal energy using the Where:

following conversion: 1 kWh = 3412 Mi=the mass withdrawn for the ith draw (i=1

Btu). to 6), in lbm (kg). V.t=measured volume of the storage tank, as Cp-ithe specific heat of water, in Btu/lb=F

determined in section 6.1.1, gal (L). (k/kg.'C).

EE-RM-94-230 COMMENT 49L

Federal Register I Vol. 60, No .. 56 I Thursday, March 23, 1995 I Proposed Rules 15347 

6.1.3 Recovery Efficiency. The recovery 

efficiency for gas, oll, and heat pump storage 

type water heaters Is computed as: 

Where: 

MICpl(Tdel,1 -Tin,l) + 

Tlr Qr 

VstPZC pZ (T max,l- To) 

Qr 

MI=total mass removed during the first draw 

of the 24-hour simulated use test, Ib", 

(kg). . 

=V1 XPi 

V1=total volume removed during the first 

draw of the 24-hour simulated use test, 

gal (L). 

PI=density of the water as evaluated at the 

water temperature at the point where the 

fiow volume Is measured, Ibm/gal (kg/L). 

Cp I=SPectfiC heat <:>f the v.:ithdrawn water as 

evaluated at (Td.~1 + Tin,I)/2 Btullbm·oF . 

~lkg·K). 

Tdo~l=average water outlet temperature 

measured during the first draw of the 24-

hour simulated use test,"F (0C). 

Tin, 1 =average water inlet temperature 

measured during the first draw of the 24-

hour simulated use test, OF (oC). 

V..=measured volume of the storage tank, as 

determined in section 6. 1.1, gal (L). 

P2=de_nsity o( stored hot water evaluated at 

(Tawt, 1+ To)/2, Ibm/gal (kgIL). 

Cp2"'spedfic heat <:>f stor~ hot water 

evaluated at (Tmax,l+ To)/2, Btullb",·oF ~/ 

kg.K). 

Tawt,l=maximum mean tank temperature 

recorded after cut-out following the first 

draw of the 24-hour simulated use test, 

OF (OC). 

t o=maximum mean tank temperature 

recorded prior to the first draw of the 24-

hour simulated use test, of (0C). 

Q,.,..l=electrical energy used by the 

supplemental resistive elements of a heat 

pump water heater during the first 

recovery of the 24-hour simulated use 

test, Wh .. 

tcmp.l=the total ope'tating time of the 

compressor of a heat pump water heater 

during the first recovery of the 24-hour 

simulated use test, hr. . 

Qr=the total energy used by the water heater 

between cut-out prior to the first draw 

and cutout following the first draw, 

including auxiliary energy such as pilot 

lights, pumps, fans, etc., Btu (MJ). 

(electriccll auxiliary energy shall be. 

converted to thermal energy using the 

following conversion: I Kwh=3412 Btu). 

The recovery efficiency for electric water 

heaters with immersed heating elements is 

assumed to be 98 percent. 

6.1.4 Hourly Standby Losses. The hourly 

standby losses are computed as 

Where: 

Qstby 

Qbr = -' ____ .--.;,.,~r __ _ 

'f stby.l 

Qm=the hourly standby energy "losses of the 

water heater. Btu/hr ~lhr). 

Q.lby"'the total energy consumed by the water 

heater between the time at which the 

maximum mean tank temperature Is 

observed after the sixth draw and the 

end of the 24-hour test period, Btu ~. 

V .. =measured volume of the storage tank, as 

determined in section 6.1.1, gal (L). 

p=def}Sity _of stored hot water as evaluated at. 

(T 24+ T sul /2, Ibm/gal (kgIL). 

Cp=speciflc heat of the stored water as 

evaluated at (T24+Tsul/2, Btullbm·oF (kJ/ 

kg·oC). 

. t 24=the mean tank temperature at the end of 

the 24-hour simulated use test, OF (0C). 

T .. =maximum mean tank temperature 

observed after the sixth draw. OF (0C). 

tstby,l=elapsed time between the time at 

which the maximum mean tank 

temperature Is observed after the sixth 

draw and the end of the 24-hour 

simulated use test, hr. 

The standby heat loss coefficient for the 

. tank is computed as: 

Where: 

UA = =-_Q....;:;.:::br....-_ 

T t,stby- T a.stby 

Qm=defined in section 6.1.4. 

t ... ~verall average storage tank 

temperature between the time when the 

maximum mean tank temperature Is 

observed after the sixth draw and the 

end of the 24-hour simulated use test. OF 

(0C). 

t .. ...,y=overall average ambient temperature 

between the time when the maxiIllum 

mean tank temperature Is observed after 

the sixth draw and the end of the 24-

hour simulated use test, OF (0C). 

UA-standby heat loss coeffident of the 

storage tank, Btulhr·oF (kJ/hr.0C). 

6.1.5 Daily Water Heating Energy 

Consumption; The daily water heating energy 

consumption. Qd Is computed as: . 

VstpC AT 24-To) 

Tlr 

Where: 

Q=tot& energy used by the water heater 

during the 24-hour simulated use test 

including auxiUary energy such as pilot 

lights. pumps. fans. etc., Btu ~ 

(Electrical auxiUary energy shall be 

converted to thermal energy using the 

follOwing conversion: I kWh = 3412 

Btu). 

V..=measured volume of the storage tank. as 

determined in section 6.1.1, gal (L). 

p=density of the stored hot water as 

evaluated at (T24+to)/2,1b",/gal (kgIL). 

. Cp=spedfic heat of the_stored water as 

evaluated at (T24+ To)/2. BtuIlbm·oF (kJ/ kg .• C). 

t 24=mean tank temperature at the end of the 

24-hour simulated use test, OF (oC). 

t o=mean tank temperature at the beginning 

ofthe 24-hour simulated use test, 

recorded one minute before the first 

draw is initiated. OF (OC). 

lJr=recovery effidency of the hot water 

heater, dimensionless. 

6.1.6 Adjusted Daily Water Heating 

Energy Consumption. The adjusted daily 

water heating energy consumption. Qdo takes 

into account that the temperature difference 

between the storage tank and surrounding 

ambient temperature may not be the nominal 

value of 67.5°F (l35~F-67.5°F) or 37.5°C 

(57.2°C-19.7°C) due to the 10°F (5.6°C) 

allowable variation in storage tank 

temperature, 135±5°F (57.2±2.8°C), and the 

5°F (2.8°C) allowable variation in 

surrounding ambient temperature 65°F 

(l8.3°C) to 70°F (21.1 °C). The adjusted daily 

water heating energy consumption Is 

computed as: 

Qds =Qd -[(r.tby -Ta,stby)-

(135 OF -67.5 °F)]UA'fstby.

2 

or Qds = Qd -[(Tstby -Ta,stby)-

(57.2 °C-19.7 °C)]UArstby.

2 

Where: 

Qds=the adjusted dally water heating energy 

consumption, in Btu ~. 

T"by"'the mean tank temperature during the 

total standby portion, T stby,2. of the 24-

hour test, in OF (oC). , 

t .... by"'the average ambient temperature 

during the total standby portion, TS1by.2. 

of the 24-hour test, in OF (oC). 

. UA~the standby heat loss coeffident for the 

storage tank. in Btu/hr·oF (kJ/hr.oC). 

tolby,2=the number of hours during the 24-

hour simulated test when water was not 

being withdrawn from the water heater. 

A modification Is also needed to take into 

account that the temperature difference 

. between the outlet water temperature and 

supply water temperature may not be 

equivalent to the nominal value of 77°F 

(1 35°F -58°F) or 42.8°C (57.2°C -14.4°C). 

The folJowing equations adjust the 

experimental data to a nominal 77"F (42.8°C) 

temperature rise. 

The energy used to heat water, Btu/day (kJ/ 

day) may be computed as: 

Where: 

M;=the mass withdrawn for the.ith draw (i=l 

to 6). in Ibm (kg). 

Cpi",the specific heat of water, In Btullb", OF 

(kJlkg·oC). 
15348 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

Tdi.uthe average water outlet temperature M fT - minimum input rate. The recovery efficiency

measured during the ith draw (1-1 to 6), FHR ( de- i) used in subsequent computations is taken as °F(°C). - ( r 1 o p F the average of these two values. The

tinj-the average water inlet temperature p35 F ) maximum recovery efficiency is computed

measured during the fth draw (1=1 to 6), as:

OF(*C). MPHR(Tdel-T,)

rq-as defined in section 6.1.3. or F, del /M C T

The energy required to heat the same p(57.2°C - 14.4°C) l a inl

quantity of water over a 77°F (42.8°C) which may be expressed as: Qm

temperature rise, Btu/day (kI/day), is: , .rx :".~~~~ :'/~ -Where:

QHW 77»F = MFHR l l(Td Tin) Mi-defined in section 6.2.2.1.

*Qi, ' F ;'_.e 'Fh= F- - Cp,-deflned in section 6.2.2.1.

-~6 MC (1°35? 9v-580FP p(77°F) Tdiu-deflned in section 6.2.2.1. _____i__S____) _

r T.i 1

il-clefined in section 6.2.2.1.

-- _QrQ,x=the total energy used by the water

i=l tir MPHR I Tde T in heater between cut-out prior to the first

or Fh = draw and cut-out following the first or -w p(42.8°C) draw, including auxiliary energy such as or QHW, 42.gC= Where:pilot lights, Btu (kI).

6 MCI 57( 2C'14 4C MpHn-the mass removed during the one hour Them mumrecoveyeffceny MLp(5/.2~ C 14.4continuous draw, in bm (kg).computed . as:

*- , TieTdhl-the average delivery temperature, In °F . - i=l . r7',(o\. C) ' MM IT T 4 Cp4 (T del ,4 ) The difference between these two values is: Tin=the average Inlet temperature, In OF (°C). 17 r,minm p=the density of water at the'average delivery

QHWD = QHW,77°F -QHW temperature. in Ibm/gal (kg/L). Wh

If a water meter is used in lieu of a scale

or the first hour rating is computed as: M4=the mass withdrawn during the fourth .draw, in Ibm (kg).

QHWD iQHW,42.0C- - _v )Cp4-the _(TdCp-- specific heat of water, in Btu/lbm-°F QHWD,= qHW,42.sC -QHW V Tdel -Tin) (k/kg.°C).

which must be added to the adjusted daily Fhr = Td.,4=the average delivery temperature for

water heating energy consumption value. the fourth draw, in °F (C).

Thus, the daily energy consumption value ,Ti-,4-the average inlet temperature for the

which takes into account that the - fourth draw, in F (°C).

temperature difference between the storage F \ in) Q.i-the total energy consumed

tank and ambient temperature may not be or Fr 42 immediately prior to the fourth draw and

67.5°F (37.5°C) and the temperature rise cut-out following the fourth draw,

across the storage tank may not be 77°F Where: including auxiliary energy such as pilot

(42.8°C) is: V-the volume of water removed during the lights, in Btu (k]).

\ ~ ~~~~~, - , . one hour continuous draw, in gallons The recovery efficiency is computed as:

-Qdm = Qda +QHWD (liters). =Q'e+ W ~ Td.1-deftned in section 6.2.1. 6.1.7 EnergyFactor. The energy factor, Er, Tideflned in section 6.2.1. 1 rn

is computed as: 6.2.2 Recovery Efficiency 2

6 r (15 -'F6.2.2.1 6M Fixed Input Instantaneous Water Where:

= ME C35 58 F) Heaters. The recovery efficiency is computed ' rl,-defined in section 6.2.2.2.

i Qdm ;as: - q trin-deflned in section 6.2.2.2.

1 or " '1 /( _ v 6.2.3 Daily Water Heating Energy o r l M p Tdell -T in,l) Consumption. The daily water heating energy

_6 (57.2°C-14-.4C) MC 7

r = consumption, Qa is computed as:

Ef =vI

f . Q Where: Where: ·=1 Qan ~~1=1- do ; ~Mi-the mass withdrawn during the first Q-the energy used by the flow actuated

'Where: . -draw of the 24-hour simulated use test, Ibm water heater during the 24-hour

Qdm=the modified daily water heating energy (kg). simulated use test.

consumption as computed in accordance Cpl-the specific heat of water at the A modification is needed to take into

with section 6.1.6, in Btu (k). average temperature (Tid.l+Tisi)/2, Btu/ account that the temperature difference

Mi=as defined in section 6.1.6. lb,.F (k/kg.°C). between the outlet water temperature and

Cpi=as defined in section 6.1.6. Tdo,.,-the average temperature for the first supply water temperature may not be

6.1.8 Annual Energy Consumption. The draw, °F (°C). equivalent to the nominal value of 77°F

annual energy consumption for storage type TiO,.1 the average Inlet temperature for the ( 35F - 58F) or 42.8°C (57.2C - 14.4°C).

and heat pump water heaters is computed as: first draw, °F (°C). The following equations adjust the

Qr=the total energy used by the water experimental data to a nominal 77°F (42.8°C)

E u=365 -. x heater between cutout prior to the first draw temperature rise. a~nnual l - and cut-out following the first draw, The energy used to heat water may be

Where: including auxiliary energy such as pilot computed as:

Qdm-the modified daily energy consumption lights, pumps, fans, etc., Btu (k).

value, Btu/day (kj/day), and 365 is the 62.2.2. VariableInputlnstantaneous 6 M.C .T -T

number of days in a year. Water Heaters. For instantaneous water ' ( dli ii

6.2 Instantaneous Hot Water Heaters. heaters which have a variable firing rate, two HW

6.2.1 First HourRating Computation. recoveryefficiency values are computed, one i=l . r

Compute the first hour rating as: at the maximum input rate and one at the Where:

EE-RM-94-230 COMMENT 49L

15348 Federal Register / VoL 60. No. 56 / Thursday. March 23. 1995 / Proposed Rules 

T.s.u-the average water outlet t~perature measured durms the 1th draw (i-I to 6). 

°F(OC). 

'T la,i--the average water inlet temperature 

measured durms the 1th draw (i .. 1 to 6). 

°F(OC). 

TI.-as defined in section 6.1.3. 

The energy requlredto heat the same 

quantity of water over a 77°F(4Z.8°C) 

temperature rise, Btu/day ~/day),is: 

QHW. 77°F = 

t MiCpi(ljS~F-S8°F) 

i=l 

or QHW, 42~80C = 

,t MjCpi(S7.2°C-14.4°C) 

. , i=l Tlr' 

The difference between these two values is: 

Q HWD = QHW,77°F ...: Q HW 

or, 

QHWD,=QHW.42.8°C ~QHW 

which must be added to the adjusted dally 

water heatlrig energy cons).ll1lption value. 

Thus, the dally energy consumption value 

which takes into account that the ' 

temperature dlfl'erence between the storage 

,tank and ambient temperature may ~t be 

,67.5°F (37.5°C) and the temperature rise 

across the storage tank may not be 77°F 

(4Z.8°C) is: 

Qdm =Qda +QHWD 

6; 1.7 Energy Factor. The energy factor, Ee, 

ls computed as: 

or 

F = MFHR(T del-T in) 

hr p(13S0 F-S8.oF) 

, MFHR(T del-Tjn) or F = -,;..' ___ .l..-...;.;.... ___ ~ 

"hr p(S7.20 C-14.40 C) 

, which may be expressed as: 

F = MFHR(Tdel-Tin) 

hr ,'p(770 F), 

'Where: 

MFHIl=the mass removed during the one hour 

_ contlriuous draw. in Ibm (kg). 

T dol-the average delivery temperature, in OF 

(DC). 

T iD .. the average inlet temperature. in OF (DC). 

p .. the density of water at the'average delivery 

, temperature. in Ibm/gal (kgIL). 

. If a water meter is used in lieu of a scale 

the first hour ratlrig is eomputed as: 

. Where: 

V -the volume of water removed durms the 

one hour contlriuous draw. in gallons 

(liters). 

Tde1 .. defined in section 6.Z.1. 

T iDoodefined in section 6.Z.I. 

6.Z.Z Recovery EffIciency 

6.Z.Z.1 Fixed Input Instantaneous Water 

Heaters. The recovery efficiency is computed ' 

as: 

Where: 

M.--the mass withdrawn during the first 

Where: draw of the Z4-hour simulated use test. Ibm 

QcIm=the modified dally water heating energy (kg). 

consumption as computed in accordance CP.=the specific hel!t ofw~ter at the 

with section 6.1.6,in Btu ~. " average temperature (Tdol,.+ T~.)IZ, Btu/ 

Mi=8S defined in section 6.1.6. 1b"q·oF ~lkg·oC). ' , 

CPi=8S defined in section 6.1.6. T dol,.-the average temperature for the first 

6.1.8 Annua,l Emirgy Consumption. The draw. OF (OC). 

annual energy consumption for storage type TiD,.-the average inlet temperatUre for the 

and heat pump water heaters is computed as: first draw. OF (OC). , Qr=the total energy used by the water 

E aDDuaI = 36, S. x Qdm ,heater betwee,n cutout prior to the first draw 

and cut-out following the first draw. 

Where: 

QcIm-the modified dally energy consumption' 

value, Btu/day ~/day),and 365ls the 

number of days in a year. 

6.Z Instantaneous Hot Water Heaters. 

6;Z.1 First Hour Rating Computation. 

Compute the first hour rating as: 

including aux1llary energy such as pilot 

lights. pumps. fans, etc .• Btu ~. 

6;Z.Z.Z. VarlableInput Instantaneous 

Water Heaters. For instantaneous water 

heaters which have a variable firing rate, two 

recovery efficiency values are computed, one at the maxlmum input rate and one at the 

rnin1mum input rate. The recovery efficiency 

used in subsequent computations is taken as the average of these two values. The 

maximum recovery efficiency is computed as: . 

.' MICpl(Tdel.l :....T jD.1) 

Tlr•mu = Q . r,ma 

Where: 

M.=defined in section 6.Z.Z.1. ' 

gp ... defined in section 6.Z.Z.1. 

Td ...... defined in section 6.Z.Z.r. : . TIa,.oodefined in Section 6.Z.Z.1. 

Q.._=the total energy used by the water 

heater between cut-out prior to the first 

draw and cut-out following the first 

draw, including aux1l1ary energy such as 

pilot lights, Btu ~. 

The minimum recovery efficiency is, 

computed as: 

" ' _ M4Cp4(T deI.4-T in.4) 

Tlr,min -, 

. Qr,min 

Where: 

~=the mass withdrawn during the fourth . draw, in Ibm (kg). , CP4-the speciftc heat of water, in Btullbm·oF _ ~1kg.oC). 

Tdol,4",the averag~ delivery temperature for 

the fourth draw,in OF (OC). 

T iD,4",the average inlet temperature for the . fourth draw. in OF (OC). . 

Q..,asiD",the total energy consumed 

. immediately prior to the fourth draw and 

cut-out follOwing the fourth draw, ' ' 

including aUx1l1ary eriergy such as pilot 

lights. in Btu ~. 

The recovery efficiency is cOmputed as: 

TI = Tlr•mu + Tlr,min 

r 2 

Where: 

Tlr_-defined in section 6.Z.Z.Z. 

Tlr,miDoodefined in section 6.Z.Z.Z. 

6.Z.3 Dally Water HeatinB Energy . 

Consumption. The dally water heating energy , consumption, Qd is computed as: . 

Qd-Q ' 

Where: 

Q",the energy used by the flow actuated 

water heater during the ~4-hour 

simulated use test. , 

A modification is needed to tBke into 

account that the temperature difference 

between the outlet water temperature and 

supply water temperature may not be' 

'equivalent to the nominal value of 77°F 

(135°F - 58°F) or 4Z.8°C. (57.ZoC -14.4°C). 

The, following equations adjust the 

experimental data to a nom1na1 77°F (4Z.8°C) 

temperature rise. 

The energy used to heat water may be 

computed as: 

Where: 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15349

Mi-the mass withdrawn during the ith draw, Where: (2.8°C) of the temperature that the identical

in lbm (kg). Qdmthe modified daily energy consumption, areas of the same basic model of the

Cpi-the specific heat of water of the ith draw, in Btu/day (kJ/day) and 365 is the appliance would attain if It remained in the

In Btulb.'F(kJ/kg. °C). number of days within a year. test room for 24 hours while not operating

T6,Ai=the average delivery temperature of the with all oven doors closed and with any gas

ith draw, in °F(0C). 7. Ratings for Untested Models pilot lights on and adjusted in accordance

Tii=the average inlet temperature of the ith In order to relieve the test burden to with manufacturer's instructions.

draw, in °F(°C). manufacturers who offer water heaters which 1.7 Primary energy consumption means

,ridefined in section 6.2.2.2. differ only in fuel type or power input, either the electrical energy consumption of a

The energy required to heat the same ratings for untested models may be conventional electric oven or the gas energy

quantity of water over a 77IF (42.8°C) established in accordance with the following consumption of a conventional gas oven.

temperature rise is: procedures. In lieu of the following 1.8 Secondary energy consumption procedures a manufacturer may elect to test means any electrical energy consumption,

rQ _the unit for which a rating is sought. other than clock energy consumption, of a QHW,77°F 7.1 Gas Water Heaters. Ratings obtained conventional gas oven.

6 MiC .(135°F-58oF) for gas water heaters using natural gas can be 1.9 Standard cubc foot (L) ofgasmeans

_______ ________ 

p used for an Identical water heater which that quantity of gas that occupies 1 cubic foot

7 l- ~7rutilizes propane gas if the Input ratings are (L) when saturated with water vapor at a 1=1 r within 10 percent. temperature of 60°F (15.6°C) and a pressure

7.2 Electric Water Heaters of 30 inches of mercury (101.6 kPa) (density

or QHw,42.8sc = 7.2.1 First Hour Rating. Ifanelectric of mercury equals 13.595 grams per cubic

6 MCA f57 °C- - 14.4A° storage type water heater is available with centimeter). M (ipi * 2 C *14.40 )more than one input rating, the manufacturer 1.10 Thermocouple means a device

shall designate the standard input rating and consisting of two dissimilar metals which are

i=1 7

1

r the water heater need only be tested with Joined together and, with their associated

Where: heating elements at the designated standard wires, are used to measure temperature by

M-deftined above, input ratings. The first hour ratings for units means of electromotive force.

Misdefined above. .having power input rating less than the Cpideflned above. designated standard input rating shall be 2. Test Conditions

Tr=defned in above. assigned a first hour rating equivalent to the 2.1 Installation. A free standing appliance

The difference between these two values is: first draw of the first hour rating for the shall be installed with the back directly

electric water heater with the standard Input against, or as near as possible to, a vertical

QHWD = QHW,77F - QHW rating. For units having power Inputs greater wall which extends at least 1 foot above and

than the designated standard input rating, the on either side of the appliance. There shall

first hour rating shall be equivalent to that be no side walls. A drop-in, built-in or wallor QHWD = QHW,42.8'C - QHW measured for the water heater with the mounted appliance shall be installed in an

standard input rating. enclosure in accordance with the

which must be added to the daily water 7.2.2 Energy Factor. The energy factor for manufacturer's instructions. These

heating energy consumption value. Thus, the identical electric storage type water heaters, appliances are to be completely assembled

daily energy consumption value which takes with the exception of heating element with all handles, knobs, guards and the like

into account that the temperature rise across wattage, may use the energy factor obtained mounted In place. Any electric resistance

the storage tank may not be 77°F (42.80C) Is: during testing of the water heater with the heaters, gas burners, baking racks, and baffles

designated standard input rating. shall be in place in accordance with the

Qdm = Qd + QHWD 5. Appendix I to subpart B of part 430 is manufacturer's instructions: however, broiler

6.2.4 Energy Factor. The energy factor, Ef revised to read as follows: pans are to be removed from the oven's

is computed as: Appendix I to Subpart B of Part 430.- baking compartment. is c o m p u t e d a s : Appendix I to Subpart B of Part 43 0 - Disconnect any electrical clock which uses

6 M 1 F5°oUniform - Test Method for Measuring the energy continuously, except for the

Ef p (135 F - 580 F) Energy Consumption of Conventional microwave oven. Do not disconnect or

r

f n J 0Ranges, Conventional Cooking Tops, modify the circuit to any other electrical

i=l Qdm Conventional Ovens, and Microwave devices or features, except as indicated in

Ovens section 2.1.3.

6 M .C -(57.2°C-144°C i De2.1.1 Conventionalelectricranges, ovens,

or Ef = 5 1. DefinitIons and cooking tops. These products shall be ~~1 Qdm 1.1 Built-in means the product is connected to an electrical supply circuit with

Q

1

= dm supported by surrounding cabinetry, walls, voltage as specified in section 2.2.1 with a Where: or other similar structures. watt-hour meter installed in the circuit. The

Qdm=the daily water heating energy 1.2 Drop-in means the product is watt-hour meter shall be as described in

consumption as computed in accordance supported by horizontal surface cabinetry. section 2.9.1.1.

with Section 6.2.3, in Btu (kD. - 1.3 Forced convection means a mode of 2.1.2 Conventionalgas ranges, ovens, and

Mi=the mass associated with the ith draw, in conventional oven operation in which a fan cooking tops. These products shall be

Ibm (kg). is used to circulate the heated air within the connected to a gas supply line with a gas

Cpi=the specific heat of water computed at a oven compartment during cooking. meter installed between the supply line and

temperature of (58°F+135°F)/2, Btu/ 1.4 Freestandingmeans the product is not the appliance being tested, according to

lb.m°F [(14.4°C+57.20C)/2, kJ/kg.°C]. supported by surrounding cabinetry, walls, manufacturer's specifications. The gas meter

Tds.,=the average delivery temperature of the or other similar structures. shall be as described in section 2.9.2.

Ith draw, in °F(°C). 1.5 IEC 705 refers to the test standard Conventional gas ranges, ovens and cooking

T,,.i=the average inlet temperature of the ith published by the International tops with electrical ignition devices or other

draw, in OF(°C). Electrotechnical Commission, entitled electrical components shall be connected to

6.2.5 Annual Energy Consumption. The "Method for Measuring the Performance of an electrical supply circuit of nameplate

annual energy consumption for Microwaves Ovens for Household and voltage with a watt-hour meter installed in

instantaneous type water heaters is computed Similar Purposes," Publication 705, the circuit. The watt-hour meter shall be as as: Amendment 2-1993. described in section 2.9.1.1.

1.6 Normalnonoperating temperature 2.1.3 Microwave ovens. Install the

E~ - 365 x Q.m means the temperature of all areas of an microwave oven in accordance with the manual 365 XQdm appliance to be tested that is within 5 degrees manufacturer's instructions and connect to

EE-RM-94-230 COMMENT 49L

Federal Register I Vol. 60, No. 56 I Thursday, March 23, 1995 I Proposed Rules 15349 

Mi-the mass withdrawn during the ith draw, 

in Ibm (kg). 

Cpl-the specific heat of water of the ith draw. 

in BtuIlbmoF(kJlkg.oC). 

tdel.i=the average delivery temperature of the 

ith draw, in °F(°C). 

t iD,i=the average inlet temperature of the ith 

draw, in °F(oC). 

llr=deflned in sectionS.2.2.2. 

The energy required to heat the same 

quantity of water over a 77°F (42.S°C) 

temperature rise is: 

QHW,77°F = ± MiCpi(135°F-58°F) 

i=l 7]r· 

or QHW ,42.SoC = ± MiCpi(57.2°C-14.4°C) 

i=l 7]r 

Where: 

Mi=deflned above. 

Cpi=deflned above. 

'lr=deflned in above. 

The difference between these two values is: 

QHWD =QHW,77°F -QHW 

or QHWD = QHW,42.soc - QHW 

which must be added to the daily water 

heating energy consumption value. Thus, the 

daily energy consumption value which takes 

into account that the temperature rise across 

the storage tank may not be 77°F (42.S°C) is: 

Qdm = Qd +QHWD 

S.2.4 Energy Factor. The energy factor. Er, 

is computed as: 

6 M.C .(135°F -58°F) E

f 

= L--I .....:..f1l _____ _ 

i=l Qdm 

Where: 

Qdm=the daily water heating energy . 

consumption as computed in accordance 

with Section S.2.3, in Btu (kJ). 

Mi=the mass associated with the ith draw, in 

Ibm (kg). 

Cpi=the specific heat of water computed at a 

temperature of (SsoF+13S°F)I2, Btu/ 

Ibm· OF [(I4.4°C+S7.2°C)/2, kJlkg·oCl. 

t cIol,i=the average delivery temperature of the 

ith draw, in °F(°C). 

t iD,i=the average inlet temperature of the ith 

draw, in °F(°C). 

6.2.5 AnnuaJ Energy Consumption. The 

anriual energy consumption for . 

instantaneous type water heaters is computed 

as: 

E&IIIIual = 365 X Qdm 

Where: 

QtIm=the modified daily energy consumption, 

in Btu/day (kJ/day) and 3SS is the 

number of days within a year. 

7. Ratings for Untested Models 

In order to relieve the test burden to 

manufacturers who offer water heaters which 

differ only in fuel type or power. input, 

ratings for untested models may be 

established in accordance with the following 

procedures. In lieu of the following 

procedures a manufacturer may elect to test 

the unit for which a rating is sought. 

7.1 Gas Water Heaters. Ratings obtained 

for gas water heaters using natural gas can be 

used for an identical water heater which 

utilizes propane gas if the input ratings are 

within 10 percent. 

7.2 Electric Water Heaters , 7.2.1 First Hour Rating. If an electric 

storage type water heater is available with . 

more than one input rating, the manufacturer 

shall designate the standard input rating and 

the water heater need only be tested with 

heating elements at the designated standard 

input ratings, The first hour ratings for units 

having power fuput rating less than the 

designated standard input rating shall be 

assigned a first hour rating equivalent to the 

first draw of the first hour rating for the 

electric water heater with the standard input 

rating. For units having power inputs greater 

than the designated standard input rating. the 

first hour rating shall be equivalent to that 

measured for the water heater with the 

standard input rating~ 

7.2.2 Energy Factor. The energy factor for 

identical electric storage type water heaters, 

with the exception of heating element 

wattage, may use the energy factor obtained 

during testing of the water heater with the 

designated standard input rating. 

5. Appendix 1 to subpart B of part 430 is 

revised to read as follows: 

Appendix I to Subpart B of Part 430-

Uniform Test Method for Measuring the 

Energy Consumption of Conventional 

Ranges, Conventional Cooking Tops, 

Conventional Ovens, and Microwave 

Ovens 

i. Definitions 

1.1 Built-in means the product is 

supported by surrounding cabinetry, Walls, 

or other similar structures. 

1.2 Drop-in means the product is 

supported by horizontal surface cabinetry. 

1.3 Forced convection means a mode of 

convention~ oven operation in which a fan 

is used to circulate the heated air within the 

oven compartment during cooking. 

1.4 Freestanding means the product is not 

supported by surrounding cabinetry, walls, 

or other similar structures. 

1.5 lEC 705 refers to the test standard 

published by the International 

Electrotechnical Commission, entitled 

"Method for Measuring the Performance of 

Microwaves Ovens for Household and 

Similar Purposes." Publication 70S, 

Amendment 2-1993. 

1. S Normal nonoperating temperature means the temperature of all areas of an 

appliance to be tested that is within 5 degrees 

(2.S°C) of the temperature that the identical 

areas of the same basic model of the 

appliance would attain if it remained in the 

test room for 24 hours while not operating 

with all oven doors closed and with any gas 

pilot lights on and adjusted in accordance 

with nianufacturer's instructions. 

1.7 Primary energy consumption means 

either the electrical energy consumption of a 

conventional electric oven or the gas energy 

consumption of a conventional gas oven. 

I.S Secondary energy consumption means any electrical energy consumption, 

other than clock energy consumption, of a 

conventional gas oven. 

1.9 Standard cubic foot (L) of gas means 

that quantity of gas that occupies 1 cubic foot 

(L) when saturated with water vapor at a 

temperature of SO°F (1S.S°C) and a pressure 

of 30 inches of mercury (101.6 kPa) (density 

of mercury equals 13.595 grams per cubic 

centimeter) . 

1.10 Thermocouple means a device 

consisting of two dissimilar metals which are 

Joined together and, with their associated 

wires, are used to measure temperature by 

means of electromotive force. 

2. Test Conditions 

2.1 Installation. A free standing appliance 

shall be installed with the back directly 

against, or as near as possible to, a vertical 

wall which extends at least 1 foot above and 

9n either side of the appliance. There shall 

be no side walls. A drop-in, built-in or wallmounted appllance shall be installed in an 

enclosure in accordance with the 

manufacturer's instructions. These 

appliances are to be completely assembled 

with all handles, knobs, guards and the like 

mounted in place. Any electric resistance 

heaters, gas burners, baking racks, and baffles 

shall be in place in accordance with the 

manufacturer's instructions; however, broiler 

pans are to be removed from·the oven's 

baking compartment. 

Disconnect any electrical clock which uses 

energy continuously, except for the 

microwave oven. Do not disconnect or 

modify the circuit to any other electrical 

devices or features, except as indicated in 

section 2.1.3. 

2.1.1 Conventional electric ranges, ovens, 

and cooking tops. These products shall be 

connected to an electrical supply circuit with 

voltage as specified in section 2.2.1 with a 

watt-hour meter installed in the circuit. The 

watt-hour meter shall be as described in 

section 2.9.1.1. 

2.1.2 Conventional gas ranges, ovens, and 

cooklng tops. These products shall be 

connected to a gas supply line with a gas 

meter installed between the supply line and 

the appliance being tested. according to 

manufacturer's specifications. The gas meter 

shall be as described in section 2.9.2. 

Conventional gas ranges, ovens and cooking 

tops with electrical ignition devices or other 

electrical components shall be connected to 

an electrical supply circuit of nameplate 

voltage with a watt-hour meter installed in 

the circuit. The watt-hour meter shall be as described in section 2.9.1.1. 

2.1.3 Microwave ovens. Install the 

microwave ov.en in accordance with the 

manufacturer's instructions and connect to 
15350 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

an electrical supply circuit with voltage as range, conventional cooking top, or temperatures in any three consecutive cutspecified in section 2.2.1. A watt meter and conventional oven which is designed to off/cut-on actions of the gas burners,

watt-hour meter shall be installed in the operate using only natural gas as the energy excluding the initial cut-off/cut-on action, by

circuit and shall be as described in section source must be tested with natural gas. Any the thermostat after the temperature rise of

2.9.1.1. and 2:9.1.2. If trial runs are needed basic model'of a conventional range, 325°-5°F (162.8°-2.8°C) has been attained by

to set the "on" time for the test, the test conventional cooking top, or conventional the conventional gas oven. Remove the

measurements are to be separated according oven which is designed to operate using only thermocouple after the thermostat has been

to section 4, Paragraph 12.6 of IEC 705. LP gas as the gas energy source must be set.

2.2 Energy supply. tested with propane gas. 2.5 Ambient room air temperature.

2.2.1 Electricalsupply. Maintain the 2.3 Air circulation. Maintain air During the test, maintain an ambient room air

electrical supply to the conventional range, circulation in the room sufficient to secure a temperature, TR, of 77°i9°F (25°i5°C) for

conventional cooking top, and conventional reasonably uniform temperature distribution, conventional ovens and'cooking tops, or as oven being tested at 240/120 volts except that but do not cause a direct draft on the unit indicated in section 4, Paragraph 12.4 of IEC

basic models rated only at 208/120 volts shall under test. ' 705 for microwave ovens as measured at least

be tested at that rating. Maintain the voltage 2.4 Setting the conventional oven 5 feet (1.5 m) and not more than 8 feet (2.4

within 2 percent of the above specified thermostat. m) from the nearest surface of the unit under

voltages, except for the microwave oven 2.4.1 Conventional electric oven. Install a test and approximately 3 feet (.9 m) above the

testing. Maintain the electrical supply to a thermocouple approximately in the center of floor. The temperature shall be measured

microwave oven at 120 volts i 1 volt and at' the usable baking space. Provide a with a thermometer or temperature

60 hertz. temperature indicator system for measuring indicating system with an accuracy as 2.2.2 Gas supply. the oven's temperature with an accuracy as indicated in section 2.9.3.1.

2.2.2.1 Gas burneradjustments. indicated in section 2.9.3.2. If the oven 2.6 Normalnonoperatingtemperature.

Conventional gas ranges, ovens, and cooking thermostat does not cycle on and off, adjust All areas of the appliance to be tested shall

tops shall be tested with all of the gas burners or determine the conventional electric oven attain the normal nonoperating temperature,

adjusted in accordance with the installation thermostat setting to provide an average as defined in section 1.6, before any testing

or operation instructions provided by the internal temperature which is 325°±5°F begins. The equipment for measuring the

manufacturer. In every case, the burner must (162.8°±2.8°C) higher than the room ambient applicable normal nonoperating temperature

be adjusted with sufficient air flow to prevent air temperature. If the oven thermostat shall be as described in sections 2.9.3.1, a yellow flame or a flame with yellow tips. operates by cycling on and off, adjust or 2.9.3.2, 2.9.3.4, and 2.9.3.5, as applicable.

2.2.2.2 Natural gas. For testing determine the conventional electric oven 2.7 Test blocks for conventional oven and

convertible cooking appliances or appliances thermostat setting to provide an average cooking top. The test blocks shall be made of

which are designed to operate using only internal temperature which is 325°±5°F aluminum alloy No. 6061, with a specific

natural gas, maintain the natural gas pressure (162.8°±2.8°C) higher than the room ambient heat of 0.23 Btu/lb-°F (0.96 kJ/[kg°C]) and

immediately ahead of all controls of the unit air temperature. This shall be done by with any temper that will give a coefficient

under test at 7 to 10 inches of water column measuring the maximum and minimum of thermal conductivity of 2.6 to 2.8 BTU-in/

(1743.6 to 2490.8 Pa). The regulator outlet temperatures in any three consecutive cut- in-ft 2F .(154.8 to 171.5 W/[m°C]). Each

pressure shall equal the manufacturer's off/cut-on actions of the electric resistance block shall have a hole at its top. The hole

recommendation. The natural: gas supplied heaters, excluding the initial cut-off/cut-on shall be 0.08 inch (2.03 mm) in diameter and

should have a heating value of approximately action, by the thermostat after the 0.80 inch (20.3 mm) deep. The manufacturer

1,025 Btu's per standard cubic foot (38.2 kJ/ temperature rise of 325 0

±5°F (162.8°:2.8"C) conducting the test may provide other means L). The actual gross heating value, Hn, in has been attained by the conventional which will ensure that the thermocouple

Btu's per standard cubic foot (kJ/L), for the electric oven. Remove the thermocouple after junction is irstalled at this same position and

natural gas to be used in the test shall be the thermostat has been set. depth.

obtained either from measurements made by 2.4.2 Conventional gas oven. Install five The bottom of each block shall be flat to

the manufacturer conducting the test using parallel-connected weighted thermocouples, within 0.002 inch (0.051 mm) TIR (total

equipment that meet the requirements one located at the center of the conventional indicator reading). Determine the actual

described in section 2.9.4 or by the use of gas oven's usable baking space and the other weight of each test block with a scale with

bottled natural gas whose gross heating value four equally spaced between the center and an accuracy as indicated in section 2.9.5.

is certified to be at least as accurate a value the corers of the conventional gas oven on 2.7.1 Conventional oven test block. The

that meet the requirements in section 2.9.4. the diagonals of a horizontal plane through test block for the conventional oven, W1, 2.2.2.3 Propane. For testing convertible the center of the conventional gas oven. Each shall be 6.25±0.05 inch (158.8±1.3 mm) in

cooking appliances with propane or for weighted thermocouple shall be constructed. diameter, approximately 2.8 inches (71 mm)

testing appliances which are designed to of a copper disc that is 1-inch (25.4 mm) in high and shall weigh 8.5±0.1 lbs (3.86±0.05

operate using only LP-gas, maintain the diameter and a-inch (3.2 mm) thick. The kg). The block shall be finished with an propane pressure immediately ahead of all two thermocouple wires shall be located in anodic black coating which has a minimum

controls of the unit under test at 11 to 13 two holes in the disc spaced 1/-inch (12.7 thickness of 0.001 inch (0.025 mm) or with

inches of water column (2740 to 3238 Pa). mm) apart, with each hole being located V4- a finish having the equivalent absorptivity.

The regulator outlet pressure shall equal the inch (6.4 mm) from the center of the disc. 2.7.2 Small test block for conventional

manufacturer's recommendation. The Both thermocouple wires shall be silver- cooking top. The small test block, W2, shall

propane supplied should have a heating soldered to the copper disc. Provide a be 6.25±0.05 inches (158.8±1.3 mm) in

value of approximately 2,500 Btu's per temperature indicator system for measuring diameter, approximately 2.8 inches (71 mm)

standard cubic foot (93.15 kJ/L). The actual the oven's temperature with an accuracy as high and shall weigh 8.5±0. llbs (3.86±0.05

gross heating value, Hp, in Btu's per standard indicated in section 2.9.3.2. If the oven kg).

cubic foot (kJ/L), for the propane to be used thermostat does not cycle on or off, adjust or 2.7.3 Large test block for conventional

in the test shall be obtained either from determine the conventional gas oven cooking top. The large test block for the

measurements made by the manufacturer thermostat setting to provide an average conventional cooking top, W3, shall be

conducting the test using equipment that internal temperature which is 325°±5°F 9±0.05 inches (228.6±1.3 mm) in diameter,

meet the requirements described in section (162.8±°2.8°C) higher than the room ambient approximately 3.0 inches (76 mm) high and

2.9.4 or by the use of bottled propane whose air temperature. If the oven thermostat shall weigh 19±0.1 Ibs (8.62±0.05 kg).

gross heating value is certified to be at least operates by cycling on and off, adjust or 2.7.4 Thermocouple Installation. Install as accurate a value that meet the determine the conventional gas oven the thermocouple such that the thermocouple

requirements described in section 2.9.4. thermostat setting to provide an average junction (where the thermocouple contacts

2.2.2.4 Testgas. A basic model of a internal temperature which is 325°*5°F the test block) is at the bottom of the hole

convertible cooking appliance shall be tested (162.8±2.8°C) higher than the room ambient provided in the test block and that the

with natural gas, but may also be tested with air temperature. This shall be done by thermocouple junction makes good thermal

propane. Any basic model of a conventional measuring the maximum and minimum contact with the aluminum block. If the test

EE-RM-94-230 COMMENT 49L

15350 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 

an electrical supply drcuit with voltage as 

spedfied in section 2.2.1. Awalt meter and 

watt-hour meter shall be installed in the 

circuit and shall be as described in section 

2.9.1.1. and 2:9.1.2. If trial runs ate needed 

to set the "on" time for the test, the test 

measurements are to be separated according 

to section 4, Paragraph 12.6 of IEC 705. 

2.2 EneT1JY supply. 

2;2.1 Electrical supply. Maintain the 

. electrical supply to.the conventional range, 

conventional cooking top,and conventional 

oven being tested at 240/120 volts except that 

basic models rated only at 2081120 volts shall 

be tested at that rating. Maintain the voltage 

within 2 percent of the above spedfted 

voltages, except for the microWave oven 

testing. Maintain the electrical supply to a 

microwave oven at 120 volts ±.l volt and at ' 

60 hertz. 

2.2.2 Gas supply. 

2.2.2.1. Gas burner adjustments. 

Conventional gas ranges. ovens, and cooking 

tops shall be tested with all of the gas burners 

adjusted in accordance with the installation 

or operation instructions provided by the 

manufacturer. In every case, the bumer must· 

be adjusted with Suffideot ail flow to prevent 

. a yellow flame or a flame with yellow tips. 

2.2.2.2 Natural gas. For testing 

convertible cooking appliances or appliances 

. which are designed to operate using only 

natural gas, maintain the natural gas pressure 

immediately ahead of all controls of the unit 

under ~st at 7 to 10 inches of water column 

(1743.6 to 24.90~8 Pa). The regulator outlet 

pressure shall equal the manufacturer's 

recommendation. The natural: gas supplied 

should have a heating value of approximately 

1,025 Btu's per standard cubic foot (38.2 kJl 

L). The actual gross heating Value, Hn, in . 

Btu's per sc:andard cubic foot (kJ1L), for the 

natural gas to be used in the test shall be 

obtained either from measurements made by 

the manufacturer conducting the test using 

equipment that meet the requirements 

described in section 2.9.4 or by the use of . 

. bottled natural gas whose gross heating value 

is certified to be at least as accurate a value 

that meet the requirements in section 2.9.4. , 2.2.2.3 Propane. For testing convertible 

cooking appliances with propane offor 

testing appliances which are designed to 

operate using only LP-gas, maintain the . 

propane pressure immediately ahead of all . 

controls of the uilit under test at 11 to 13 

inches of water column (2740 to 3238 Pal. 

The regulator outlet pressure shall equal the 

manufacturer's recommendation. The 

propane supplied should have a heating , 

value of approximately 2,500 Btu's per . 

standard cubic foot (93.15 kJlL). The actual 

gross heating value, Hp , in Btu's per standard 

cubic foot (kJ1L), for the propane to be used 

lit the test shall be obtained either from 

measurements made by the manufacturer 

conducting the test using equipment that 

meet the requirements described in section 

2.9.4 or by the use of bottled propane whose 

gross heating value is certified to be at least as accurate a value that meet the 

requirements described in section 2.9.4. - 2.2.2,4 Test gas. A basic model of a 

convertible cooking appliance shall be tested 

with natural gas, but may also be tested with 

propane. Any basic model oh conventional 

range, conventional cooking top, or temperatures in any.three consecutive cutconventional oven which is designed to offlcut..on actions of the gas burners, , 

. operate using orily natural gas as the energy excluding the initial cut-off/cut-on action, by 

source must be tested with natural gas. Any the thermostat after the temperature rise of 

basic modeI'of a conventional i"ange,325~OF (162.8~.8°C) has been attained by 

conventional cooking top, or conventional the conventional gas oven. Remove the ' 

oven which is designed to operate using only thermocouple after the thermostat has been , LP gas as the gas energy source must be set. . 

tested with propane gas. . 2~5 Ambient room ali temperature. 

2.3 AIr c1rculatlon:Maintain air During the test, maintain an ambient room air 

circulation in the room suffident to secure a temperature, TRo of 77°±9°F (25°±5°C) for 

reasonably uniform temperature distribution, conventional ovens and' cooking tops, or as 

but do not cause a direct draft on the unit indicated in section 4, Paragraph 12.4 of IEC 

under test.. 705 for microwave ovens as measured at least 

2.4 Setting the conventional oven 5 feet (1.5 m) and not more than 8 feet (2.4 

theimostat. . m) from the nearest surface of the unit uDder 

2.4.1· Conventional electric oven. Install atesl and approximately 3 feet (.9 m) above the 

thermocouple approximately in the center of floor; The temperature shall be measured ' 

the usable baking space. Provide a with a thermometer or temperature 

temperature iridicator system for measuring indicating system with an accuracy as 

the oven's temperature with an accuracy as indicateq in section 2.9.3.1. 

indicated in section 2.9.3.2. if the oven 2.6 Normal nonoperating temperature .. 

thermostat does not cycle on and off, adjust All areas of the appliance to be tested shall 

ordetermihe the conventional electric oven attain the normal nonoperating temperature, 

thermostat setting to provide an average as defined in section 1.6, before any testing 

iriternal temperature which is 325°±5°F begins. The equipment for measuring the 

,(162.8°±2.8°C) higher than the room ambient _ appUcable normal nonoperating temperature 

air temperature. If the oven thermostat shall be as desci1t>ed in sections 2.9.3.1, 

operates by cycling on and off, adjust or 2.9.3.2. 2.9.3.4, and 2.9.3.5, as applicable. 

determine the conventional electric oven 2.7 Test blocks for conventional oven and 

therm~tat setting to provide tm average cooklng top. The test blocks shall be made of 

internal temperature which is 325~oF aluminum alloy No. 6061, with a speciftc 

(l62.8~.8°C) higher than the room anibient' heat of 0.23 Btulllr°F (0.96 kJ/[kg"C)) and 

air temperature. This shall be done by • ~th any temper that will give a coeffident 

.measui1ng the l1lllXimum and minimum of thermal conductivity of 2.6 to 2.8 BTU-in! 

temperatures in any three consecutive cut- in-ft2_oF.(154.8 to 171.5 W/[moC)). Each 

off/cut-on actions of the electric resistance block shall have a hole at its top. The hole 

heaters, excluding the initial cut-offlcut-on shall be 0.08 inch (2.03 mm) in diameter and 

action, by the thermostat after the' . 0.80 inch (20.3 rnm) deep. The manufacturer 

temperature rise of 325°±5°F (162.8°±2.8°C) conducting thetestmay provide other meims 

hils been attained by the conventional which will ensUre that the thermocouple 

electric oven. Remove the thermocouple after. junction is inStalled at this same position and 

the thermostilthas been set. , depth. 

2.4.2 Conventional gas oven. Install five The bottom of each block shall be flat to 

parallel-connected weighted thermocouples, within 0.002 inch (0.051 rnm) TIR (total 

one located at the Center of the conventional indicator reading). Determine the actual ' 

gas oven's usable baking space and the other weight of each test block with a scale with 

four equally spaced between the center and an accuracy as indicated in section 2.9.5 . 

the comers of the conventional gas oven on 2.7.1 Conventional oven test block. The 

the diagonals of a horizontal plane through test block for the conventional oven, WI. 

the center of the conventional gas oven. Each . shall be 6.25±O.05 inch (158.8±1.3 rnm) in 

weighted thermocouple shall be constructed. diameter, approximately 2.8 tDches (71 rnm) 

of a copper disc that is I-inch (25.4rnm) in high and shall weigh 8.5±O.llbs (3.86±O.05 

diameter and IAI-inch (3.2 mm) thick. The kg). The bloc;:k shall be finished with an 

two thermocouple wires shall be located in anodic black coating which has a minimum 

two holes in the disc spaced liz-inch (12.7 thickness of 0.001 inch (0.025 mm)or with 

mm) apart, with each hole being located 1/4- a finish having the equivalent absorptivity. 

trich (6.4· min) from the center of the disc. 2.7.2 Small test block for conventional 

BOth thermocouple wires shall be silver- cooklng top. The small test block, W2, shall 

soldered to the copper disc. Provide a be 6.25±O.05 inches (158.8±1.3 rnm) in 

'temperature ihdicatOr system for measuring diameter, approximately 2.8 inches (71 mm) .. 

the oven's temperature with an acCuracy as high and shall weigh 8.5±O.llbs. (3.86±O.05 

indicated in section 2.9.3.2.'« the oven kg). .' 

thermostat dOt!Sriot cycle 00 or off,adjust or 2.7.3 Large test block for conventional 

determihe the Conventional gas oven cooklng top. The large test block for the 

thermostat settlngto provide an average conventional cooking top, W3, shall be 

internal temperature which is 325~.oF 9±O.05 inches (228.6±1.3 mm) in diameter, 

(162.8°±2.8°C) higher than the room ambient approxiinately 3.0 inches (76 mm) high and 

air temperature. Hthe overi thermostat shall weigh 19±O.llbs (8;62±O.05 kg). 

opera~es by cycling on and off. adjustor '2.7.4 Thermocouple installation. Install 

determine the conventional·gas oven the thermocouple such that the thennocouple 

thermostat setting to provide ail average junction (where the thermocouple contacts 

internal temperature which is 325~oF the test block) is at the bottom of the hole 

(l62.8±2.8°C) higher than the room ambient provided in the test block and that the 

air temperature. This shall be done by thermocouple junction makes good thermal 

measuring the rrulxtmum and minimum contact with the aluminum blQCk. H the test 

I.' \ 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15351

blocks are to be water cooled between tests 2.9.3 Temperature measurement each of those two modes. If the oven the thermocouple hole should be sealed, or equipment thermostat does not cycle on and off, adjust

other steps taken, to insure that the 2.9.3.1 Room temperature indicating' or determine the conventional electric oven thermocouple hole is completely dry at the system. The room temperature indicating thermostat setting to provide an average

start of the next test. Provide a temperature system shall be as specified in section 4, internal temperature which is 325°+5°F

indicator system for measuring the test block Paragraph 12.3 of IEC 705. (162.8°±2.8°C) air temperature. If the oven temperature with an accuracy as indicated in 2.9.3.2 Temperature indicator system for thermostat operates by cycling on and off,

section 2.9.3.3. measuring conventional oven temperature. adjust or determine the conventional electric

2.7.5 Initial test block temperature. The equipment for measuring the oven thermostat setting to provide an average

Maintain the initial temperature of the test conventional oven temperature shall have an internal temperature which is 3250

±5°F

blocks, Ti, within ±4°F (±2.2°C) of the error no greater than ±4°F (±2.20C) over the (162.8°±2.80 C) higher than the room ambient

ambient room air temperature as specified in range of 65° to 5000

F (18°C to 2600 C). air temperature. The oven shall remain on for

section 2.5. If the test block has been cooled 2.9.3.3 Temperature indicator system for at least one complete thermostat "cut-off/cut-

(or heated) to bring it to room temperature, measuring test block temperature. The on" of the electrical resistance heaters or gas

allow the block to stabilize for at least 2 system shall have an error no greater than burners after the test block temperature has

minutes after removal from the cooling (or ±2F (±1. I °C) when measuring specific increased 2340F (112.2°C) above Its initial

heating) source, before measuring its initial temperatures over the range of 65° to 3300

F temperature.

temperature. (18.3°C to 165.6°C). It shall also have an error 3.1.1.1 Self-cleaning operation of a 2.8 Microwave oven test load. no greater than ±2°F (±1.1 °C) when conventional oven. Establish the test

2.8.1 Test container. The test container measuring any temperature difference up to conditions set forth in section 2, "TEST

shall be as specified in section 4, Paragraph 240°F (115.60C) within the above range. CONDITIONS," of this Appendix. Adjust any

12.2 of IEC 705. 2.9.3.4 Test load temperatures. The pilot lights of a conventional gas oven In

2.8.2 Test water load. The test water load thermometer or other temperature measuring accordance with the manufacturer's

shall be as specified in section 4, Paragraph instrument used to measure the test water' instructions and turn off the gas flow.to the

12.1 of IEC 705. load temperature shall be as specified in conventional cooking top. The temperature of

2.8.2.1 Test water load and test container section 4, Paragraph 12.3 of IEC 705. Use the conventional oven shall be its normal

temperature. Before the start of the test, the only one thermometer or other temperature nonoperating temperature as defined in

oven and the test container shall be at measuring device throughout the entire test section 1.6 and described in section 2.6.

ambient temperature as specified In section procedure. Then set the conventional oven's self4, Paragraph 12.4 of IEC 705. The test water 2.9.3.5 Temperature indicator system for cleaning process in accordance with the

load shall be contained in a chiller (not the measuring surface temperatures. The. manufacturer's instructions. If the selftest container) and maintained at 18°±1.8°F temperatures of an external surface of an cleaning process is adjustable, use the

(10°±l°C) below the ambient room -appliance shall be measured by means of a average time recommended by the

temperature. thermocouple in firm contact with the manufacturer for a moderately soiled oven.

2.9 Instrumentation. Perform all test surface. The temperature indicating system 3.1.1.2 Continuously burning pilot lights

measurements using the following shall have an error no greater than ±.45°F of a conventional gas oven. Establish the test

instruments, as appropriate: (±0.25°C) over the range 650 to 90°F (18°C to conditions set forth in section 2, "TEST

2.9.1 Electrical Measurements. 32°C). CONDITIONS," of this appendix. Adjust any

2.9.1.1 Watt-hour meter. The watt-hour 2.9.4 Heating Value. The heating value of pilot lights of a conventional gas oven in

meter for measuring the electrical energy the natural gas or propane shall be measured accordance with the manufacturer's

consumption of conventional ovens and with an Instrument and associated readout instructions and turn off the gas flow to the

cooking tops shall have a resolution of at device that has a maximum error no greater conventional cooking top. If a positive

least 1 watt-hour (3.6 kJ) and a maximum than .5% of the measured value and a displacement gas meter is used the, test

error no greater than 1.5 percent of the resolution of .2 % or less of the full scale duration shall be sufficient to measure a gas

measured value. The watt-hour meter for reading of the indicator instrument. The consumption which is at least 200 times the

measuring the energy consumption of heating value of natural gas or propane must resolution of the gas meter.

microwave ovens shall have a resolution of be corrected for local temperature and 3.1.2 Conventional cooking top. Establish

at least 0.1 watt-hour (.36 kj) and a maximum pressure conditions. the test conditions set forth in section 2, error no greater than 1.5 percent of the 2.9.5 Scale. The scale used for weighing "TEST CONDITIONS," of this appendix.

measured value. the test blocks shall have a maximum error Adjust any pilot lights of a conventional gas

2.9.1.2 Wattmeter. The wattmeter used to no greater than 1 ounce (28.4 g). The scale cooking top in accordance with the measure the conventional oven, conventional used for weighing the microwave oven test manufacturer's instructions and turn off the

range, microwave/conventional range clock water load shall be as specified in section gas flow to the conventional oven(s), if so

power or the power input of the microwave four, paragraph 12.3 of IEC 705. equipped. The temperature of the

shall have a resolution of at least 0.2 watt (0.2 conventional cooking top shall be Its normal

J/s) and a maximum error no greater than 5 3. Test Methods and Measurements nonoperating temperature as defined in

percent of the measured value. 3.1 Test methods. section 1.6 and described in section 2.6. Set

2.9.2 Gas Measurements. 3.1.1 Conventional oven. Perform a test the test block in the center of the surface unit

2.9.2.1 Positive displacement meters. The by establishing the testing conditions set under test. The small test block, W2, shall be

gas meter to be used for measuring the gas forth in section 2, "TEST CONDITIONS," of used on electric surface units of 7 Inches (178

consumed by the gas burners of the oven or this appendix, and adjust any pilot lights of mm) or less in diameter. The large test block,

cooking top shall have a resolution of at least a conventional gas oven in accordance with W3 , shall be used on electric surface units

0.01 cubic foot (0.28 L) and a maximum error the manufacturer's instructions and turn off over 7 inches (177.8 mm) in diameter and on no greater than 1 percent of the measured the gas flow to the conventional cooking top, all gas surface units. Turn on the surface unit

value. If a positive displacement gas meter is if so equipped; under test and set its energy input rate to the

used for measuring the gas consumed by the Before beginning the test, the conventional maximum setting (100 percent). When the

pilot lights, it shall have a resolution of at oven shall be at its normal nonoperating test block reaches 144°F (62.2°C) above its

least 0.01 cubic foot (0.28 L) and have a temperature as defined in section 1.6 and initial test block temperature, immediately

maximum error no greater than 2 percent of described in section 2.6. Set the conventional reduce the energy input rate to 25*5 percent

the measured value. oven test block Wl approximately in the of the maximum energy input rate. After

2.9.2.2 Flow meter. If a gas flow meter is center of the usable baking space. If there Is 15±0.1 minutes at the reduced energy setting,

used for measuring the gas consumed by the a selector switch for selecting the mode of turn off the surface unit under test.

pilot lights, it shall be calibrated to have a operation of the oven, set it for normal 3.1.2.1 Continuously burning pilot lights

maximum error no greater than 1.5 percent baking. If an oven permits baking by either of a conventional gas cooking top. Establish

of the measured value and a resolution of at forced convection by using a fan, or without the test conditions set forth in section 2,

least 1, percent of the measured value, forced convection, the oven is to be tested in "TEST CONDITIONS," of this appendix.

EE-RM-94-230 COMMENT 49L

Federal Register / Vol. 60. No. 56 / Thursday. March 23. 1995/ Proposed Rules 15351 

blocks are to be water cooled between tests 

the thermocouple hole should be sealed. or 

other steps taken. to insure that the 

thermocouple hQle is completely dry at the 

start of the next test. Provide a temperature 

indicator system for measuring the test block 

temperature with an accuracy as indicated in 

section-2.9.3.3. 

2.7.5 Init1al test block temperature. 

Maintain the initial temperature of the test 

blocks, TI• within ±4°F (±2.2°C) of the 

ambient room air temperature as specified in 

section 2.5. If the test block has been cooled 

(or heated) to bringit to room temperature. 

allow the block to stabilize for at least 2 

minutes after remoViil from the cooling (or 

heating) source. before measuring its initial 

temperature. 

2.S Microwave oven test load. 

2.8.1 Test container. The test contairler 

shall be as specified in section 4. Paragraph 

12.2 oflEC 705. 

2.S.2 Test water load. The test water load 

shall be as specified in section 4, Paragraph 

12.1 oflEC 705. 

2.8.2.1 Test water load and test container 

temperature. Before the start of the test, the 

oven and the test container shall be at 

ambient temperature as specified in section 

4, Paragraph 12.4 of lEC 705. The test water 

load shall be contairled in a chlller (not the 

test container) and maintatOed at ISo± 1.8°F 

(lO"±IOC) below the ambient room 

temperature. 

2.9 Instrumentat1on. Perform all test 

measurements using the following 

instruments. as appropriate: 

2.9.1 Electrical Measurements. 

2.9.1.1 Watt-hour meter. The watt-hour 

meter for measuring the electrical energy - consumption of conventional ovens and 

cooking tops shall have a resolution of at 

least 1 watt-hour (3.6 kj) and a maximum 

error no greater than 1.5 percent of the 

measured value. The watt-hour meter for 

measuring the energy consumption of 

microwave ovens shall have a resolution of 

at least 0.1 watt-hour (.36 kj) and a maximum 

error no greater than 1.5 percent of the 

measured value. 

2.9.1.2 Wattmeter. The wattmeter used to 

measure the conventional oven. conventional 

range, microwave/conventional range clock 

power or the power input of the microwave 

shall have a resolution of at least 0.2 watt (0.2 

J/s) and a maximum error no greater than 5 

percent of the measured value. 

2.9.2 Gas Measurements. 

2.9.2.1 Positive displacement meters. The 

gas meter to be used for measuring the gas 

consumed by the gas bUITlers of the oven or 

cooking top shall Qave a resolution of at least 

0.01 cubic foot (0.28 L) and a maximum error 

no greater than I percent of the measured 

value. If a positive displacement gas meter is 

used for measuring the gas consumed by the 

pilot lights, it shall have a resolution of at 

least 0.01 cubic foot (0:28 L) and have a maximum error no greater than 2 percent of 

the measured value. 

2.9.2.2 Flow meter. If a gas flow meter is 

used for measuring the gas consumed by the 

pilot lights, it shall be calibrated to have a 

maximum error no greater than 1.5 percent 

of the measured value and a resolution of at 

least I. percent of the measured value. 

2.9.3 Temperature measureiriimt 

equipment. . 

2.9.3.1 Room temperature indlcarms" 

system. The room temperature indicating 

system shall be as specified in section 4. 

Paragraph 12.30flEC 705. 

2.9.3.2 Temperature indicator system for 

measuring convent1onal oven temperature. 

The equipment for measuring the 

conventional oven temperature shall have an error no greater than ±4°F (±2.2°C) over the 

range of 65° to 500°F (l8°C to 260°C). 

2.9.3.3 Temperature indicator system for 

measuring test block temperature. The 

system shall have an error no greater than 

±2°F (± 1.1 0C) whelJ measuring specific 

temperatures over the range of 65° to 330°F 

(l8.3°C to 165.6°C). It shall also have an error 

. no greater than ±2°F (±1.1°C) when 

measuring any temperature difference up to 

240°F (l15.6°C) within the above range. 

2.9.3.4 Test load temperatures. The 

thermometer or other temperature measuring 

instrument used to measure the test water' . 

load temperature shall be as sped fleet in 

section 4, Paragraph 12.3 of IEC 705. Use 

only one thermometer or other temperature 

measuring device throughout the entire test 

procedure. -

2.9.3.5 Temperature indicator system for 

measuring surface temperatures. The. 

temperatures of an external surface of an 

-appliance shall be measured by means of a 

thermocouple in f1rm contact with the 

surface. The temperature indicating system 

shall have an error no greater than ±.45°F 

(±O.25°C) over the range 65° to goOF (l8°C to 

32°C). 

2.9.4 Heating Value. The heating value of 

the natural gas or propane shall be measured 

with an instrument and associated readout 

device that has a maximum error no greater 

than .5% of the measured value and a 

resolution of .2% or less of the full scale 

reading of the indicator instrument. The 

heating value of natural gas or propane must 

be corrected for local temperature and 

pressure conditions. 

2.9.5 Scale. The scale used for weighing 

the test blocks shall have a maximum error 

no greater than I ounce (28.4 g). The scale 

used for weighing the microwave oven test 

water load shall be as spedfied in section 

four, paragraph 12.;3 of lEC 705. 

3. Test Methods and Measurements 

3.1 Test methods. 

3.1.1 Conventional oven. Perform a test 

by establishing the testing conditions set 

forth in section 2, "TEST CONDmONS," of 

this appendix, and adjust any pilot lights of 

a conventional gas oven in accordance with 

the manufacturer's instructions and tum off 

the gas flow to the conventional cooking top, 

if so equipped. 

Before beginning the test, the conventional oven shall be at its normal nonoperating 

temperature as defined in section 1.6 and 

described in section 2.6. Set the conventional 

oven test block WI approximately in the 

center of the usable baking space. If there is 

a selector switch for selecting the mode of 

operation of the oven: set it for normal . 

baking. If an oven permits baking by either 

forced convection by using a fan, or without 

forced convection, the oven is to be tested in 

each of those two modes. If the oven 

thermostat does not cycle on and off, adjust 

or determine the conventional electric oven 

thermostat setting to provide an average 

internal temperature which is 325°±5°F 

(l62.8°±2.S°C) air temperature. If the oven 

thermostat operates by cycling on and off, 

adjust or determine the conventional electric 

oven thermostat setting to provide an average 

internal temperature which is 325°±5°F 

(l62.8°±2.8°C) higher than the room ambient 

air temperature. The oven shall remain on for 

at least one complete thermostat "cut~ff/cuton" of the electrical resistance heaters or gas 

burners after the test block temperature has 

increased 234°F (I 12.2°C) above its initial 

temperature. . 

3.1.1.1 Self-cleaning operat1on of a convent1onal oven. Establish the test 

conditions set forth in section 2, "TEST 

CONDITIONS," of this Appendix. Adjust any 

pilot lights of a conventional gas oven in 

accordance with the manufacturer's 

instructions and. turn off the gas flow.to the 

conventional cooking top. The temperature of 

the conventional oven shall be its normal 

nonoperating temperatUre as defined in 

section 1.6 and described in section 2.6. 

Thim set the conventional oven's selfcleaning process in accordarlCe with the 

manufacturer's instructions. If the self~ 

cleaning process is adjustable, use the 

average time recommended by the 

manufacturer for a moderately soiled oven. 

3.1.1.2 Cont1nuously burning pilot lights 

of a conventional gas oven. Establish the test 

conditions set forth in section 2. "TEST 

CONDITIONS," of this appendix. Adjust any 

pilot lights of a conventional gas oven in 

accordance with the manufacturer's 

instructions and turn ott the gas fiow to the 

conventional COOking top. If a positive 

displacement gas meter is used the, test 

duration shall be suffident to measure a gas 

consumption which is at least 200 times the 

resolution of the gas meter. 

3.1.2 Conventional cooking top; Establish 

the test conditions set forth in section 2, 

"TEST CONDmONS." of this appendix. 

Adjust any pilot lights of a conventional gas 

COOking top in accordance with the 

manufacturer's instructions and tum off the 

gas flow to the conventional oven(s), ifso 

equipped. The temperature of the 

conventional cooking top shall be its normal 

nonoperating temperature as defined in 

section 1.6 and described in section 2.6. Set 

the test block in the center of the surface unit 

under test. The small test block, W2, shall be 

used on electric surface units of 7 inches (I 78 

mm) or less in diameter. The large test block, 

W3, shall be used on electric surface units 

over 7 inches (l77.8 mm) in diameter and on 

all gas surface units. Tum on the surface unit 

under test and set its energy input rate to the 

maximum setting (100 percent). When the 

test block reaches 144°F (62.2°C) above its 

initial test block temperature, immediately 

reduce the energy input rate t025±5 percent 

of the maximum energy input rate, After 

15±O.1 minutes at the reduced energy settlrig, 

tum off the surface unit under test. 

3.1.2.1 Cont1nliously burnlng pilot lights 

of a conventional gas cooking top. Establish 

the test conditions set forth in section 2, 

"TEST CONDmONS," of this appendix. 
15352 Federal Register / Vol; 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

Adjust any pilot lights of a conventional gas cubic feet (L) of gas for conventional gas ED. If the thermostat controls the oven cooking top.in accordance with the ovens. For a gas oven that can be operated temperature without cycling on and off.

manufacturer's instructions and turn off the with or without forced convection, measure record Eo. For a gas oven which also uses

gas flow to the conventional oven(s). If a in watt-hours any electrical energy consumed electrical energy for the ignition or operation positive displacement gas meter is used, the by an ignition device or other electrical of the oven also record Em

test duration shall be sufficient to measure a components required for the operation of a 3.3.5 For a convenona oven that can be

gas consumption which is at least 200 times conventional gas oven while heating the test 3 a f n a t a n b

the resolution of the gas meter. block to To using the forced convection operated with or without forced conveon

3.1.3 Microwave oven. mode, (Eo) and without usingntrols forceoven the 

3.1.3.1 Microwaveoven testenergyor convection mode, (E0)2. temperature without cycling on and off,

power output. Establish the testing 3.2.1.2 Energy consumption of self- measure the energy consumed withthe

conditions set forth in section 2, "TEST cleaning operation. Measure the energy forced convection mode, (Eo)l, and without

CONDITIONS," of this appendix. Follow the consumption,-Es, in watt-hours of electricity the forced convection mode, (Eo)2. If the

test procedure as specified in section 4, or in standard cubic feet (L) of gas consumed conventional oven operates with or without

Paragraph 12.4 of IEC 705. during the self-cleaning test set forth in forced convection and the thermostat

3.2 Test measurements. section 3.1.1.1. For a gas oven, also measure controls the oven temperature by cycling on

3.2.1 Conventional oven test energy in watt-hours (k) any'electrical energy, Els, and off, record the conventional oven test

consumption. If the oven thermostat controls consumed by ignition devices or other measurements TA, EA. TB, EB, Tc, Ec, TD, and

the oven temperature without cycling on and electrical components required during the ED. For a gas oven that can be operated with

off, measure the energy consumed, Eo, when self-cleaning test. or without forced convection, measure any the temperature of the block reaches To (To 3.2.1;3 Gas consumption of continuously electrical energy consumed by an ignition

is 234°F (112.2°C) above the initial block burning pilot lights. Measure the gas device orother electrical components used

temperature, T). If the oven thermostat consumption of the pilot lights, Po, in d , the e ectr, i\

operates by cycling on and off, make the standard cubic feet (L) of gas and the test during the forced convection ode E

following series of measurements: Measure duration, Lo, in hours for the test set forth and without using the forced convection

the block temperature, TA, and the energy in Section 3.1.1.2. If a gas flow rate meter is mode, I o) 2

consumed, EA, at the end of the last "ON" used, measure the flow rate, PR, in standard 3.3.6 Record the measured energy

period of the conventional oven before the cubic feet per hour (L/s). consumption, Es, and for a gas oven, any

block reaches To. Measure the block 3.2.1.4 Clock power. If the conventional electrical energy, ELs for the test of the selftemperature, TB, and the energy consumed, oven, conventional range, or microwave/ cleaning operation of a conventional oven.

EB, at the beginning of the next "ON" period. conventional range includes an electric clock 3.3.7 Record the gas flow rate, PR; or the

Measure the block temperature, Tc, and the which is on continuously, and the power gas consumption, Po, and the elapsed time,

energy consumed, Ec, at the end of that "ON" rating in watts 0/s) of this feature is not Lo, that any continuously burning pilot lights

period. Measure the block temperature, TD, - known, measure the clock power, PcL, in of a conventional oven are under test.

and the energy consumed, ED, at the watts U/s.) 3.3.8 Record the clock power

beginning of the following "ON" period. 3.2.2 Conventional surface unit test measurement or rating, Pc., in watts.

Energy measurements for Eo, EA, EB, Ec and energy consumption. For the surface unit 3.3.9 For the surface unit under test,

ED should be expressed in watt-hours for under test, measure the energy consumption, record the energy consumption, EcrT the final

conventional electric ovens or standard cubic Ecr, in standard cubic feet (L) of gas or watt- test block temperature, Tcr, the total test

-feet (L) of gas for conventional gas ovens. For hours of electricity, and the test block me, TT For a gas cooking top which uses a gas oven, measure in watt-hours any temperature, Tcr, at the end of the 15 minuteelectrical energy for Ignition of the burners

electrical energy, Eio, consumed by an (reduced input setting) test interval for the also record Eic.

ignition device or other electrical test specified in section 3.1.2 and the total 3 30 RecordtheasfowrateP orthe

components required for the operation of a time, TT, in hours, that the unit is under test.

conventional gas oven while heating the test Measure any electrical energy, Ec consumedgas consumpton, Pc, and the elapsed time,

block to To. by an ignition device of a gas heating element Lc, that any continuously buning piot lights

\ 3.2.1.1 Conventionalovenaverage test in watt-hours. of a conventional gas cooking top are under

energy consumption. If the conventional 3.2.2.1 Gas consumption of continuously test.-

oven permits baking by either forced burning pilot lghts. If the conventional gas 3.3.11 Record the heating value, Ha, as

convection or without forced convection and cooking top under test has one or more determined in section 2.2.2.2 for the natural

the oven thermostat does not cycle on and continuously burning pilot lights, measure gas supply.

off, measure the energy consumed with the the gas consumed during the test by the pilot 3.3.12 Record the heating value, Hp, as

forced convection mode, (Eo) , and without lights, Pc, in standard cubic feet (L) of gas, determined in section 2.2.2.3 for the propane

the forced convection mode, (Eo 2, when the and the test duration; Lc, in hours.as supply.

temperature of theblock reaches To (To is specified in section 3.1.2.1. If a gas flow rate 3.3.13 Record the electrical input energy

234°F (112.2°C) above the initial block meter is used, measure the flow rate, P, in and power nput EM and PM for the

temperature, TI). If the conventional oven standard cubic feet per hour (L/s). microwave oven test; the initial and final

permits baking by either forced convection or 3.2.3 Microwave oven test energy temperature, T1 and T2, of the test water load;

without forced convection and the oven consumption and power input.the mass of the test container before filling

thermostat operates by cycling on and off, Measurements are to be made as specified in with the test water load and the mass of the

make the following series of measurements section 4, Paragraphs 12.4 and 13 of IEC 705. test water load Mc and Mw respectively and

with and without the forced convection Measure the electrical input energy, EM, in the measured room temperature To; as mode: Measure the block temperature, TA, watt-hours consumed by the microwave oven

and the energy consumed, EA, at the end of during the test. Repeat all tests three times. eterned section

the last "ON" period of the conventional 3.3 Recorded values. 4. Calculation ofDerived Results From Test oven before the block reaches To. Measure 3.3.1 Record the test room temperature, Measurements

the block temperature, TB, and the energy TR, at the start and end of each test, as nve nalov

consumed, EB, at the beginning of the next determined in section 2.5. 41 o ven. "ON" period. Measure the block temperature, 3.3.2 Record measured test block weights 1 Test energy consumption. For

Tc, and the energy consumed, Ec, at the end W1, W2, and W in pounds (kg). conventional oven with a thermostat which

of that "ON" period. Measure the block 3.3.3 Record the initial temperature. Ti, of operates by cycling on and of, calculate the

temperature, To, and the energy consumed, the test block under test. test energy consumption, Eo, corresponding

ED, at the beginning of the following "ON" 3.3.4 For a conventional oven with a to To with the aid of the figure in section 5

period. Energy measurements for Eo, EA; EB, thermostat which operates by cycling on and of this appendix, expressed in watt-hours (kDi

Ec and ED should be expressed in watt-hours off, record the conventional oven test for electric ovens and in Btu's (kJ) for gas

for conventional electric ovens or standard measurements TA, EA, TB, EB, Tc, Ec, To, and ovens, and defined as:

-' */*.

EE-RM-94-230 COMMENT 49L

15352 Federal Register / VoL 60, No. 56 iThursday, March 23, 1995 /Proposed Rules 

Adjust any pUot Ughts of a conventio'nal gas 

cooking top.in accordance with the 

. mamifacturer's instructions and tum off the 

gas now to the conventional oven(s) . .Ira 

positive displacement gas meter is used, the 

test duration shall be sufficient to measure a 

· gas consumption which is at least 200 times, 

the resolution of the gas meter. 

3.1.3 Microwave oven. 

3.1.3.1 Miaowave oven test energy or 

power output. EstabUsh the'testing 

conditions set forth in section 2, "TEST 

CONDmONS," of this appendix. Follow the 

test procedure as specified in section 4, 

Paragraph 12.4 of IEC 705. 

3.2 Test measurements. 

3.2.1 Conventional oven test energy 

cOnsumption: If the oven thermostat controls 

the oven temperature without ~cUng on and 

off, measure the energy consumed, Eo, when 

the temperature of the block reaches To (To 

is 234°F (112;2°C) above the lnltial block 

temperature, Tv. If the oven thermostat 

operates by cycling on and off. make the 

following series of measurenlents: Measure 

the block temperature. T A. and the energy 

consumed. EA. at the end of the last "ON" 

period of the conventional oven before the 

block reaches To. Measure the block 

temperature, TB. and the energy consumed. 

EB. at the beglnning of the next ".oN:' period., 

Measure the block temperature. T c. and the 

energy consumed. Ec. at the end of that "ON" 

period. Measure the block temperature. T D. 

and the energy consumed. ED. at the 

beglnning of the f?llowlng "ON" period. . 

Energy measurements for Eo. EA. EBi Ec and 

Eo should be expressed in watt-hOurs for 

conventional electric ovens or standard cubic 

·feet (L) of gas for conventional gas ovens. For . 

a gas oven, measure in watt-hours any 

electrical energy. EIO. consumed by an 

ignition device or other electr:1cal 

components required for the operation of a 

conventional gas oven whUe heating the test 

block to T (). . . 

\ . . 3.2.1.1 . Conventional oven averaae test 

energy consumption. If the conventional 

oven permits bakirig by either forced 

convection or without forced convection and 

me oven thermostat does not cycle on and . 

off. measure the energy consumed with the 

forced convection mode. (Eo) .. and without 

the forced convection mode. {Eoh. when the 

temperature of the block reaches To (To is 

· 234°F (112.2°C)above the intt1a1 bl0'7k 

temperature. Tv. If the conventional oven . 

permJts baking by either forced convection or 

· without forced convection and the oven 

thermostat operates by cycUngon and off. 

make the following series of measurements 

with and without the forced convection 

mode: Measure the block temperature. TA. 

and the energy consumed. EA. at the end of 

the last "ON" per1odofthe conventional 

oven before the block reaches To. Measure 

the block temperature. T B. and the energy 

consumed. EB. at the beginrl1ng of the next 

"ON" period. Measure the block temperature. 

T c.and the.energy consumed. Ec. at the end 

. of that "ON" period. Measure the block 

temperature. TD. and the energy consumed. 

Eo. at the beg1nn1ngof the foll<M1ng "ON" 

period. Energy measurements for. Eo. EA; EB. 

Ec and ED sHould be expressed in watt-hours 

for conventional electric ovens or standard 

cubic feet (L) of gas for conventional gas 

ovens. For a gas oven that can be operated 

with or without forced convection. measure 

in watt-hours any electrical energy consumed 

by an ignitiOn device or other electrical 

components required for the operation of a 

conventional gas oven whUe heating the test 

block to To using the forced convection 

mode. (EIO) .. and without tisifig the forced 

convection mode. (Eloh. 

3.2.1.2 Energy consumption of selfcleci'n1ng 'operation. Measure the energy 

conSumption.-Ea. in watt-hours of electricity 

or in standard cubic feet (L) ofgas consumed 

during the self-cleaning test set forth in 

section 3.1.1.1. For a gaS oven. also measure 

in watt-hours (kj)any'electriCaI energy. EIB. 

consumed by ignition devices or other 

electrical components required during the 

self-cleaning test. '. 

3.2.1;3 Gas consumption 'of continuously 

burning pilot lights. Measure the gas 

consumption of the pUot lights. Po. in 

standard cubic feet (L) of gas arid the test 

duration. La. in hours for the test set forth . 

in Section 3.1.1.2 . .If a gas now rate meter is 

. used. measUre the flow rate.Pa. in standard 

cubic feet per hour (LIs). . 

3;2.1.4 Clock power. If the conventional 

oven. conventional range. or microwavel 

conventional range includes an electric clock 

which is on continuously. and the power 

rating in watts O/s) of this feature is not 

known. measure the clock power. Pa.. in 

watts O/s.) 

3.2.2 Conventional surface unit test 

:. energy consUJDption. For the surface unit .. 

under test. measure the energy consumption. 

Ecr. in standard cubic feet (L) of gas or watthours of electricity. and the test block 

temperature, T CT. at the end of the IS minute 

(reduced input setting) test interval for the 

test specifled in section 3.1.2 and the total . 

time. T T.in.hours. that the unit is under test. 

Measure any electrical energy.EIC; consumed 

by an ignition device of a gas heating element 

in watt-hours. . 

3.2.2.1 Gas cOnsumption ofcontlnuously 

burning pilot ilghts. If the conventional gas . 

cooking toti under test has one or more 

continuo~ly burning pilot lights. measure 

the gas consumed during the test by the pUot 

lights. Pc. in standard cubic feet (L) of gas. 

and the testdurationi Le.in hours.as 

specifled in section 3.1.2.1. If a: gas now rate 

meter is used. measure the now rate. P .in 

standard cubic feet per hour (LIs). 

. 3.2.3 MicroWave oven test energy 

cOnsumption and power Input. 

Measurements ani to be made as spec1f1ed in 

sectibn 4. Paragraphs 12.4 and 130flEC 705. 

Measure the electrical input energy. EM. in 

watt-hours consumed by the microwave oven 

during the test. Repeat all tests three times. 

3.3 Recorded values. ' 

3.3.1 Record the test room temperature. 

T a. at the start arid end of each test, as 

determined in section 2.5. . 

3.3.2 Record measured test block weights 

W •• W2. and W3in pounds (kg). . 3.3.3 Record the lnlt1al temperature. TI. of 

the test block under test. 

. 3.3.4 For a conventional oven with a 

thermostat which operates by cycling on and 

off. record the conventional oven test 

measurements TA. EA. TB. Ea. Tc. Ec. TD. and 

Eo. If the thermostat controls the oven 

temperature without ~cUngon and off. 

record Eo. For a gas oven whic;:h also uses 

electrical energy for the ignition or operation 

· or the oven .. also record EIO. 

3.3.5 For a conventional oven that can be 

, operated with or without forced convection . 

and the oven thermostat controls the oven 

temperature without ~cUngon and off. 

measure the energy consumed with the 

forced convection mode. <Eo) •• and without 

the forced convection mode. (Eo)2. If the 

conventional oven operates with or without 

forced convection and the thermostat 

controls the oven temperature by ~cUng on 

and off. record the conventional oven test 

measurements TA• EA. TB. EB. Tc. Ec, TD• and 

· Eo. For a gas oven that can be operated with 

or without forced Convection. measure any 

electrical energy consumed by an ignition 

device.or other electrical components used 

during the forced convection mode. (EIO) •• 

and without using the forced convection 

mode. (Eloh. 

3.3.6 Record the measured energy 

consumption. Es; and for a gas oven. any 

electrical energy. EIB. for the test of the self-

· cleaning .operation of a conventiornlI oven. 

3.3.7 Record th~ gas now rate. Pa: or the 

gas consumption. Po. and the elapsed time. . 

La. that any continuously burning pUot Ughts , 

of a conventional oven are under test. . 

3.3.8 Record the cl~kPower 

measurement ot: rating. Pa.. in watts. 

3.3.9 For the surface unit under test, 

record the energy consumption. Ecr. the final 

test block temperature. TCT. the total test 

time. T T. Fora gas ~king top which uses 

electricaI energy for ignition of the burners. 

also record EIC. . . ' 

. 3.3.10 Record the gas now rate. P; or the 

gas consumption. Pc. and the elapsed time. 

Le. that any continuo~y burning pllot lights 

of a' conVentional gas cooking top are under 

test.' ' 

3.3.11 Record the heating value.' HD• as 

determined in section 2.2.2.2 for the natural 

gas supply. . 

3.3.12 Record the heatlrigvalue. Hp • as 

determined in section 2.2.2.3 for the propane 

supply. ". 

3.3.13 Record the electrical input energy 

and power input EM and PM for the 

· microwave oven test; the init1a1 and final 

temperature. T. and T 2. of the test water load; 

: the mass of the test container before ftlling 

with the test water load and the mass of the 

· test water load. Me and Mw respectively; and· 

the measured room temperature~ T~; as 

determined in section 3.2.3. 

4. Calculation of Derived Results From Test 

Measurements' 

4.1 ConveiJtional oven. 

4.1.1 Test energy consumption. For a 

conventional oven' with a thermostat which 

operates by ~cl1ng on and off. calculate the 

test energy consumption. Eo. corresponding 

to To with the aid of the figure in section 5 

ofthls appendix. expressed in watt-hotirs{kJ) 

· for electric ovens and in Btu's (kj) for gas 

ovens. arid defined as: 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15353

E = EAB+ (E0)1 + (E) consumption for cooking, Eso, expressed in

~T0-T.- .1x(E- E0 = 012 kilowatt-hours and defined as:

-TA (EcDA- = EE EIO x

L He xO

WCp .xT ' for electric ovens, \xT W X 

(E10 )

1 +(El 0)2 Where:

10 2 Elo=electrical test energy consumption as

and, E0 =(EAB X H) + measured in section 3.2.1 or as O

v d~E, AB,~x ) 7 Where: calculated in section 4.1.1.1.

.Y T -T 1 (Eo) =rtest energy consumption using the Oo=35.5 kWh per year, annual useful To- AjB x(E E AE ) xH forced convection mode in watt-hours cooking energy output.

[ TCD-~TAB - E(kJ) for electric ovens and in Btu's (kj) for H, W,, Cp, and T are as defined in section

gas ovens as measured in section 3.2.1.1. 4.1.2.1.1.

for gas ovens (Eo)2=test energy consumption without using 4.1.2.2 Annualenergyconsumptionof

-Where: the forced convection mode in watthours (kj) for electric ovens and in Btu's any continuously burning pilot lights. H-either H. or Hp, the heating value of the (J) for gas ovens as measured in section Calculate the annual energy consumption of

gas used in the test as specified in 3.2.1.1. any continuously burning pilot lights, Epo,

section 2.2.2.2 and section 2.2.2.3, (Eio) l=electrical energy consumption in watt- expressed in Btu's (ki) and defined as: expressed in Btu's per standard cubic hours (kJ) of a gas oven in forced

foot (kJ/L). convection mode as measured in section EP = PR H X (A-B),

To=234°F (112.2°C) plus the initial test block 3.2.1.1.

temperature. (EIo)2=electrical energy consumption in watt- or,

and, hours (k) of a gas oven without using the p

forced convection mode as measured in E = xH (A - B)

(TA + TB) section 3.2.1.1.E L

TAB =4.1.2 Conventional oven annual energy

consumption.Where:

(TC + TD) 4.1.2.1 Annual cooking energy PR=pilot gas flow rate in standard cubic feet

TCD = consumption. per hour (L/s), as measured in section

2 4.1.2.1.1 Annual primary energy 3.2.1.2.

(EA + EB) consumption. Calculate the annual primary Po=standard cubic feet (L) of gas consumed ·

EAB = energy consumption for cooking, Eco, by any continuously burning pilot lights,

2 expressed in kilowatt-hours (k) for electric as measured in section 3.2.1.2.

S(v E,)~ Povens * and in Btu's (kJ) for gas ovens, and Lo=elapsed test time in hours for any

E = TEC +E DJ . defined as: continuously burning pilot lights tested,

CD 2 as measured in section 3.2.1.2.

Where:- E XOfor electric ovens, H=H, or H ,

,the heating value-of the gas used Where: ECO0 = E0 ----- O -- for electric ovens, in the test as specified in section 2.2.2.2

TA-block temperature in °F (C) at the end W1 x Cp x T and section 2.2.2.3 in Btu's per standard

of the last "ON" period of the cubic foot (kJ/L).

conventional oven before the test block Where:A numb o e f hour i A-8,760, number of hours in a year. reaches To. Eo=test energy consumption as measured in 300, number of hours any continuously

Tblock temperature in F (C) at the section 3.2.1 or as calculated in sectionburning pilot lights contribute to the

beginning of the "ON" period following 4.1.1 or section 4.1.1.1. heang of an oven for cooking food.

the measurement of TA. H=3.412 Btu/Wh (3.6 kJ/Wh,) conversion

Tc=block temperature in °F (°C) at the end of factor of watt-hours to Btu's.4.1.2.3 Annualconventionaloven selfthe "ON" period which starts with TB. Oo=35.5 kWh per year, annual useful cleaning energy.

TD=block temperature in °F (°C) at the cooking energy output of conventional 4.1.2.3.1 Annualprimary energy

beginning of the "ON" period which electric oven. consumption. Calculate the annual primary

follows the measurement of Tc. Wi=measured weight of test block in pounds energy consumption for conventional oven

EA-volume of gas consumed in standard (kg). self-cleaning operations, Esc, expressed in

cubic feet (L) at the end of the last "ON" Cp=0.23 Btu/lb-°F (0.96 kJ/kg.°C), specific kilowatt-hours (kJ) for electric ovens and in

period before the test block reaches To. heat of test block. Btu's (k) for gas ovens, and defined as:

Es=volume of gas consumed in standard T=234°F (112.2°C), temperature rise of test

cubic feet (L) of gas at the beginning of block. Ec = ES X Se x C, for electric ovens,

the "ON" period following the or,h

measurement TA.

Ec=volume of gas consumed in standard E x O Es=energy consumption in watt-hours, as

cubic feet (L) of gas at the end of the o r g a s ov e n s measured in section 3.2.1.2.

"ON" period which starts with TB. W x Cp x T S.=ll , average number of times a selfED=volume of gas consumed in standard Where:cleaning operatior of a conventional

cubic feet (L) of gas at the beginning of electric oven is used per year.

"ON" pergy the consumption as measured In C=.001 kW/W conversion factor for watts to the "ONa period which follows th section 3.2.1. or as calculated In section kilowatts.

measurement of Tc. 4.1.1 or section 4.1.1. 1.

4.1.1.1 Average testenergyconsumption. Oo124,200Btu (131,038k)D peryear,annual or,

If the conventional oven can be operated useful cooking energy output of

with or without forced convection, determine conventional gas oven. ESC = Es x H x Sg, for gas ovens,

the average test energy consumption, Eo and Wi, Cp and T are the same as defined above. Where

Elo. in watt-hours (kJ) for electric ovens and 4.1.2.1.2 Annual secondary energy

Btu's (k) for gas ovens using the following consumption for cooking of gas ovens. sas c o n supto n s

tandard cubic feet

equations: Calculate the annual secondary energy, as measuren

EE-RM-94-230 COMMENT 49L

Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15353 

[( :c: -_T;:) x (Eeo - EAB)] 

for electric ovens, 

and, Eo =(EAB xH)+ 

[( TO-TAB )X(Eeo-EAB)XH] Teo-TAB -

for gas ovens 

-Where: 

Haeither Ha or H", the heating value of the 

gas used in the test as specified in 

section 2.2.2.2 and section 2.2.2.3, 

expressed in Btu's per standard cubic 

foot (kJ/L). 

To=234°F (lI2.2°C) plus the 1n1tial test block 

temperature. 

and, 

Where: 

TA=block temperature in of (0C) at the end 

of the last "ON" period of the 

conventional oven before the test block 

reaches To. 

TB ... block temperature in of (0C) at the 

beginning of the "ON" period following 

the measurement of T A. 

T c=block temperature in of (0C) at the end of 

the .. ON" period which starts with T B. 

T o=block temperature in of (0C) at the 

beginning of the "ON"period which 

foJlows the measurement of T c. -

EA =volume of gas _consumed in standard 

cubic feet (L) at the end of the last "ON" 

period before the test block reaches To. 

EB=volume of gas consumed in standard 

cubic feet (L) of gas at the beginning of 

the "ON" period following the . 

measurement T A. 

Ec=volume of gas consumed in standard 

cubic feet (L) of gas at the end of the 

"ON" period which starts with TB. 

_Eo=volume of gas consumed in standard 

cubic feet (L) of gas at the beginning of 

the "ON" period which follows the 

measurement ofTc. 

4.1.1.1 AverBlJe test energy consumption. 

H the conventional oven can be operated 

with or without forced convection, determine 

the average test energy consumption, Eo and 

EIO, in watt-hours (kJ) for electric ovens and 

Btu's (kJ) for gas ovens using the following 

equations: 

Where: 

(Eo) I =test energy consumption using the 

forced convection mode in watt-hours 

(kJ) for electric ovens and in Btu's (kJ) for 

gas ovens as measured in section 3.2.1.1. 

(Eoh=test energy consumption without using 

the forced convection mode in watthours (kJ) for electric ovens and in Btu's 

(kJ) for gas ovens as measured in section 

3.2.1.1. 

(EIO) I=electrical energy consumption in watthours (kJ) of a gas oven in forced 

convection mode as measured in section 

3.2.1.1. -

(EIO!2=electrical energy consumption in watthours (kJ) of a gas oven without using the 

forced convection mode as measured in 

section 3.2.1.1. 

4.1.2 Conventional oven annual energy 

consumption. 

4.1.2.1 Annual cooking energy 

consumption. 

4.1.2.1.1 Annual prtmaIY energy 

consumption. Calculate the annual primary 

energy consumption for cooking, Eco, 

expressed in kilowatt-hours (kJ) for electric 

ovens and in Btu's ~) for gas ovens, and 

defined as: 

for electric ovens, 

Where: 

Eo=test energy consumption as measured in 

section 3.2.1 or as calculated in section 

4.1.1 or section 4.1.1.1. 

He=3.412 BtulWh (3.6 kjlWh,) conversion 

factor of watt-hours to Btu's. 

00=35.5 kWh per year, annual useful 

cooking energy output of conventional . 

electric oven. 

WI =measured weight of test block in pounds 

(kg). 

Cp~.23 BtulIb-oF (0.96 kjlkg·oC). spectflc 

heat of test block. 

T =234 OF (l12.2°C), temperature rise oftest 

block. 

or. 

E _ EO xOo 

co - for gas ovens, 

WI xCp xT 

. Where: 

Eo=test energy consumption as measured in 

section 3.2.1. or as calculated In section 

4.1.I or section 4. 1.1.1. 

00=124,200 Btu (l31,038 kJ) per year, annual 

useful cooking energy output of 

conventional gas oven. 

WI, Cp and T are the same as defined above. 

4.1.2.1.2 Annual secondaIY energy 

consumption for cooking of gas ovens. 

Calculate the annual secondary energy 

consumption for cooking, Esc, expressed in 

kilowatt-hours and deflned as: 

E - _EIOxHexOO 

so - • WI xCpxT -

Where: 

EIO_Iectrical test energy consumption as 

- measured in section 3.2.1 or as 

calculated in section 4.1.1.1. 

0 0=35.5 kWh per year. annual useful 

cooking energy output. 

He. WI. Cp. and T are as defined in section 

4.1.2.1.1. 

4.1.2.2 Annual energy consumption of 

any continuously burning pilot lights. 

Calculate the annual energy consumption of 

any continuously burning pilot lights, EPO• 

expressed in Btu's (kJ) and defined as: 

or. 

Where: 

Epo =PR xHx(A-B), 

Po . Epo =-xHx(A-B) 

Lo 

I'R=pilot gas flow rate in standard cubic feet 

per hour (LIs). as measured in section 

3.2.1.2. 

Po=Standard cubic feet (L) of gas consumed . 

by any continuously burning pilot lights, 

as measured in section 3.2.1.2. 

Lo=elapsed test time in hours for any 

continuously burning pUot Ughts tested. 

as measured in section 3.2.1.2. 

H=Ha or Hp.the heating value-of the gas used 

in the test as spectfled in section 2.2.2.2 

and section 2.2.2.3 in Btu's per standard 

cubic foot ~/L). 

A=8.760. number of hours in a year. 

B=3oo. number of hours any continuously 

burning pilot Ughts contribute to the 

heating of an oven for cooking food. 

4.1.2.3 Annual conventional oven selfcleaning energy. 

4.1.2.3.1 Annual prtmaIY energy 

consumption. Calculate the annual primary 

energy consumption for conventional oven 

self-cleaning operations. Esc. expressed in 

kilowatt-hours (kJ) for electric ovens and in 

Btu's (kJ) for gas ovens, and defined as: 

Esc = Es x Se x C, for electric ovens, 

Where: 

Es=energy consumption in watt-hours. as 

measured in section 3.2.1.2. 

Se=ll. average number of times a selfcleaning operation of a conventional 

electric oven is used per year. 

C=.ool kWIW conversion factor for watts to 

kilowatts. 

or. 

Esc = Es x H x S8' for gas ovens, 

Where: 

Es=gas consumption in standard cubic feet 

(L). as measured in section 3.2.1.2. 
15354 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

H-Hn or Hp, the heating value of the gas used If the conventional gas oven uses electricaln

in the test as'specified in section 2.2.2.2 energy, calculate the total annual electrical E =S o)

and section 2.2.2.3 in Btu's per standard energy consumption, EAOE, expressed in

cubic foot (J/L). kilowatt-hours and defined as: t

Ss-7, average number of times a self-cleaningtotal annual energy consumption of any pilot

operation of a conventional gas oven is EAOE =E + Es,+ EC, lghts,

used per year. Where:

4.1.2.3.2 Annual secondary energy Where: Epo annual energy consumption of any

consumption for self-cleaning operation of Eso = annual secondary cooking energy continuously burning pilot lights

gas ovens. Calculate the annual secondary consumption as determined in section determined according to section 4.1.2.2.

energy consumption for self-cleaning 4.1.2.1.2. n - number of pilot lights in the basic model.

operations of a gas oven, Ess,'expressed in Ess - annual secondary self-cleaning energy If the ovenalso uses electrical ener kilowatt-hours and defined as: consumption as determined in section calculate the total annualectrica energy

4.1.2.3.2. E -ExSg xC , 4c -1-32consumption, ETOc, in kilowatt-hours and ESS =-EIS x Sg X C, .ECL - annual clock energy consumption as define as:

Where: ,.,^~~~~~Where: - determined in section 4.1.2.4.

EIs =electrical energy consumed during the 4.1.2.6 Total annual energy consumption ETE =ASO + AAS +

self-cleaning operation of a conventional of multiple conventional ovens. If the Where:

gas oven, as measured in section 3.2.1.2. cooking appliance includes more than one

S, 7, average number of times a self- conventional oven calculate the total annual

cleaning operation of a conventional gas energy consumption of the conventional oven is used per year. ovens using the following equations: ) E v 

C- .001 kW/Wconversionfactorfor watts 4.1.2.6.1 Conventional electric oven ASO - (ESO),

to kilowatts. energy consumption. Calculate the total i=1

4.1.2.4 Annual clock energy annual energy consumption. ETO. in kilowatt- average annual secondary energy

consumption Calculate the annual energy hours and define as: consumption forcooking,

consumption of any constantly operating Where:

electric clock, ECL, expressed in kilowatt- ETO EACO + + Ln number of conventional ovens in the

hours and defined as: Where: . basic model.

PECL ~X Y~ X =~~ -P y H 1 CEso ~ = annual secondary energy consumption CL = CL x HK x , - for cooking of gas ovens as determined

Where: in.section 4.1.2.1.2.

PCL - power rating of dock which is on EAc ( continuously, in watts, as measured in n = section 3.2.1.3. 1

HKi - 8,760, number of hours in a year. average annual primary energy consumptionEA =- (E

C - .001 kW/W conversion factor for watts' for cooking,\ n

to kilowatts. average aWhere: annual secondary self-cleaning 4.1.2.5 Total annual energy consumption n - number of conventional ovens in the energy consumption, of a single conventional oven. basic model. Where:

4.1.2.5.1 Conventional electric oven Eco - annual primary energy consumption n - number of self-cleaning ovens in the

energy consumption. Calculate the total for cooking as determined in section basic model.

annual energy consumption of a 4.1.2.1.1. - Ess = annual secondary self-cleaning energy conventional electric oven, EAO, expressed in cosumption of gas ovens as determined

kilowatt-hours and defined as: n section 4.1.2.3.2.

1 n ECL = annual clock energy consumption as EAO = ECO + ESC + EeL EASC =--(Ec)i. determined in section 4.1.2.4.

Where: n i= 4.1.3 Conventional oven cooking

Eco = annual primary cooking energy average annual self-cleaning energy efficiency.

consumption as determined in section consumption, 4.1.3.1 Single conventional oven.

4.1.2.1.1. Where 'Calculate the conventional oven cooking

Esc = annual primary self-cleaning energy n number of elfcleaning conventional efficiency, EffAo, using the following

consumption as determined in section ovens in the basic model equations:

4.1.2.3:1. Esc - annual primary self-cleaning energy For electric ovens: EcL - annual clock energy consumption as determined ~~~determined in sectioonsumption as determined acc tording in section 4.1.2.4.section 4.1 .2.3.1. Wx T

4.1.2.5.2 Conventionalgas oven energy cock eery consumpEffA = EcL= clock energy consumption as consumption. Calculate the total annual gas determined accordingto section 4.1.2.4. E X He

energy consumption of a conventional gasven energy

oven, EAOO in expressed Btus and -4.1. 2

-6.2 Conventional gas oven energy and, oven, EAOo, expressed in Btu's (ki) and

defined as: consumption. Calculate the total annual gas For gas ovens: energy consumption, EToa, in Btu's (kj) and

EA = Eco + E +EC, define as: W x Cp xT

Where: Where: E~=EA~+E~c+E~, EffAO, ,ETOG=EACOE C+E, Eo,+(i0xH,)' Eco - annual primary cooking energy

consumption as determined in section Where: Where:

4.1.2.1.1. - EAco - average annual primary energy Wi = measured weight of test block in

Epo - annual pilot light energy consumption consumption for cooking in Btu's kJ) as pounds (kg). as determined in section 4.1.2.2. defined in section 4.1.2.6.1. Cp - 0.23 Btu/lb-°F (0.96 kJ/kg.°C), specific

Esc = annual primary self-cleaning energy EASC - average annual self-cleaning energy heat of test block.

consumption as determined in section consumption in Btu's (k) as defined in T - 234°F (112.2°C), temperature rise of test

4.1.2.3.1. section 4.1.2.6.1. block.

EE-RM-94-230 COMMENT 49L

15354 , Federal Register / Vol. 60. No. 56 / Thursday. March 23. 1995 / Proposed Rules 

H-H.. or Hp. the heating value of the gas used 

in the test as'specified in section 2.2.2.2 

and section 2.2.2.3 in BtU's per standard 

" cubicfool (kJ1L).., ' 

5.=7. average number'oftlrnes a self-cleaning , 

operation of a conventional gas oven is 

I used per year. \ , 

4.1.2.3.2 Annual secondcuy enerBY 

consumption for self-cleaning operation of 

gas ovens. Calculate the aJDlual secondary 

energy consumption for self-cleaning 

operations of a gas oven. Ess.' expressed in 

kilowatt-hours and defined as: 

Where: 

Em = electrical energy consumed during the 

self-cleaning operation of a conventional " 

gas oven. as measured in section 3.2.1.2. 

5 .... 7. average number of times a Selfcleaning operation of a conventional gas 

oven is used per year. -

C .... 001 kW/w conversion factor for watts 

to kilowatts. 

4.1.2.4 Annual clock. energy 

consumption. Calculate the annual energy- , 

consumption of any constantly operating 

electric clock. Ea.. expressed in kilowatthours and defined as: 

, Where: 

, PCL .. power rating of clock. which is on , 

continuously. in watts, as measured in 

, sectjon 3.2.1.3. 

fk ..; 8,760, number of hours in a year. 

C ... 001 kW /W conversion factor for watts . 

to kilowatts. , 

4.1.2.5 Total annual energycansumptJon 

, of a sil18le conventional oven. 

4.1.2.5.1 Conventional electric oven 

, energy consumption. Calculate the total 

annual energy consumption of a 

conventional electric oven. EAo~expressedin 

kilowatt-hours and defined as: 

" Where: 

&0 = annual primary cooking energy 

consumption as determined in section 

4.1.2.1.1. 

Ese .. annual primary self-cleaning energy 

consumption as determined in section 

4.1.2.3:1. 

En .. annual clock energy consumption as 

, determined in section 4.1.2.4. 

4.1.2.5.2 Conventional gas oven energy 

consumption. Calculate the total annual gas 

energy consumption of a conventional gas 

oven. EAOO.expressed in Btu's ~ and 

defined as: 

EAOG =Eco+EPO+ESc' 

Where: ' 

&0 co annual primary cooking energy , consumption as determined in section 

4.1.2.1.1. 

EPO co aJDlual pUot Ught energy consumption as determtited in section 4.1.2.2. 

Esc ... annual primary self -cle8ntng energy 

consumption as determined in section 

4.1.2.3.1. 

If the conventional gaS oven uses electrical 

energy, calculate the total annual electrical 

energy consumption. EAcE. exPressed in 

kilowatt"hours and defined as: 

EAOE =Eso +Ess+ECL' 

Where: 

Eso ... annual secondary cooking energy . 

consumption as determined in section 

4.1.2.1.2. . 

Ess ... annual seCOndary self-cleaning energy 

consumption as determined in section 

4.1.2.3.2. 

, Ea. .. annual dock energy consumption as 

determined in Section 4.1.2.4. 

'4.1.2.6 Total annual energy consumption 

'of multiple conventional ovens. If the 

cookirig appliance includes more than one 

converltioDCl1 oVen calculate the total annual 

n 

ETPO = L(EPO)i' 

i=l 

total annual energy consumption of any pUot 

Ughts, 

Where: 

EPO .. annual energy consumption of any 

continuously burning pUot Ughts 

determined according to section 4.1.2.2. 

n .. number of pUotUghts in the basic model. 

If the oven also uses electrical energy. 

calculate the total annual electrical energy 

consumption, ElOB, in kilowatt-hours and 

define as: . 

,Where: 

energy consumption of the, conventional 1 D 

ovens using the folloWing equations: E ~(E' ) 

'4.1.2.6.1 COnventional electric oven ABO = - ~ , SO i' 

eneiBY consumption. calculate the total n i=l , annual energy consumption. E~, in kilowatt- average annual secondary energy 

hours an4 define as: " , consumption for cooking. 

Where: 

Ero = E ACO + E ABC + ECL • n .. number of conventional ovens in the 

Where: . basic model. 

Eso ... annual secondary energy cOnsumption 

for cooking of gas ovens as determined 

1 D 

EACO = - L(Eco)i' 

,n i=l 

average iumual primary energy consumption 

f6r cooking; 

Where: 

n .. number of conventional ovens in the 

basic model. 

Eco .. annualpdmary energy consumption 

for cooking as determined in section 

4.1.2.1.1.. ' 

1 n 

EAse =-L{Ese)j' 

n ;=1 

average annual self-cleaning energy 

. consumption. 

Where: 

n .. number of Self-cleaning conventional 

ovens in the basic mOdel. 

Ese ... annual primary self·deaning energy 

, consumption as determined according to 

section 4.1-.2.3.1. 

En ... clock energy consumption as 

dete~d according to section 4.1.2.4. 

, 4.1.2.6.2 'COnventional gas oven energy 

consumption. Calculltte the total annual gas 

energy cOnsumption, Eroo, in B~'s,~ and 

define as: 

ETOG =: E ACO -+- E ASC + ETPO • 

Where: 

EACO ... average annual primary energy 

consumption for cooking in Btu's ~ as 

defined in section 4.1.2.6.1. 

EAse co average annual self-cleaning energy 

consumption in Btu's ~ ,as defined in 

section 4~1.2.6.1. ' ' 

in section 4.1.2.1.2. 

1 ,n , 

EAAS =-L(Ess)i' 

n i=l , average annual secondary self-cleaning 

energy consumption, 

Where: 

it ... number of self-Cleaning ovens in the 

basic model. 

Eas'" annual secondary self-cleaning energy 

consumption of gas ovens as determined 

in section 4.1.2.3.2. , 

En = annual clock energy cOnsumption as 

" determined in section 4.1.2.4. ' 

4.1.3 COnventional oven cookllw 

effiCiency. " 

4.1.3.1 Slngle conventional oven. 

Calculate the conventional oven cooking 

efficiency, EfTAo, using the following 

equations: 

For electric ovens: 

and, 

For gas ovens: 

, WI xCp xT 

EffAO.=, , • 

, Eo +(EIO xHe) . 

Where: 

WI'" measured weight of test block in 

pounds (kg). 

c, .. 0.23 BtUllb-OF (0.96 kjlkg.oC),specific 

heat of test block. 

T co 234°F (l12.2°C), temperafure rise of test 

block. 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15355

Eo - test energy consumption as measured in Tsu = temperature rise of the test block: Final 4.2.2.1 Conventional electric cooking top

section 3.2.1 or calculated in section test block temperature, TCT, as energy consumption. Calculate the annual

4.1.1 or section 4.1.1.1. determined in section 3.2.2, minus the energy consumption of an electric cooking

He = 3.412 Btu/Wh (3.6 kJ/Wh), conversion initial test block temperature, TI, top, ECA, in kilowatt-hours per year, defined

factor for watt-hours to Btu's. expressed in °F (°C). as:

Eio = electrical test energy consumption H. = 3.412 Btu/Wh (3.6 kJ/Wh,) conversion

according to section 3.2.1 or as factor of watt-hours to Btu's. OC

calculated in section 4.1.1.1. Ecr - measured energy consumption, as ECA= --

4.1.3.2 Multiple conventional ovens. If determined according to section 3.2.2, EffT

the cooking appliance includes more than expressed in watt-hours. Where:

one conventional oven, calculate the cooking 4.2.1.2 Gas surface unit cooking Ocr = 209.4 kWh per year, annual useful

efficiency for all of the conventional ovens in efficiency. Calculate the cooking efficiency, cooking energy output

the appliance, EffTo, using the following Effsu. of the gas surface unit under test. EffcT = conventional cooking top cooking

equation: defined as: efficiency as defined in section 4.2.1.3.

4.2.2.2 Conventionalgas cooking top.

EffTo =- . W3

x C x T u 4.2.2.2.1 Annual cooking energy

°nO 1 ,' EffSU ~ -- consumption. Calculate the annual energy

Ei l Wff E consumption for cooking, Ecc, in Btu's (kJ)

i=l EffAO Where: ; per year for a gas cooking top, defined as:

Where: W3 = measured weight of test block as

n = number of conventional ovens in themeasured in section 3.3.2, expressed in

cooking appliance. pounds (kg).Eff

EffAo = cooking efficiency of each oven Cp and Tsu are the same as defined in section .C

determined according to section 4.1.3.1. 4.2.1.1. Where:

4.1.4 Conventional oven energy factor. and, OCT = 732,500 Btu (772,828 kJ) per year,

Calculate the energy factor, or the ratio of annual useful cooking energy output.

useful cooking energy output to the total E = [(Ecr - Ecp)X H]+(Ec xHe), Effcr = the gas cooking top efficiency as

energy input, Ro, using the following defined in section 4.2.1.3.

equations: Where: 4.2.2.2.2 Annual energy consumption of

For electric ovens, ECT = total gas consumption for the gas any continuously burning gas pilots.

surface unit test as measured in section Calculate the annual energy consumption of

0o 3.2.2. any continuously burning gas pilot lights of

Ro = ' Ec = electrical energy consumed by an the cooking top, Epc, in Btu's (k) per year,

EAO ignition device of a gas surface unit as defined as:

Where: measured in section 3.2.2.

Oo = 35.5 kWh per year, annual useful He = 3.412 Btu/Wh, conversion factor of watt- E = P x Ax H,

cooking energy output. hours to Btu's. Where:

EAO = total annual energy consumption for H = either H or Hp, the heating value of the

electric ovens as determined in section gas used in the test as specified in P = pt light gas flow rate as defined in

4.1.2.5.1. section 2.2.2.2 and section 2.2.2.3,secon 4.2.1.2, or as measured n section

For gas ovens: expressed in Btu's per standard cubic

foot (keL) s of gas. A = 8,760 hours, the total number of hours

0=to0.a anlEcp P x TT, (pilot consumption, in standard in a year. R = -- -- cubic feet(L), during unit test), where: H = either H. or H, the heating value of the

E a +(Eler xHr l d gas used in the test as specified in

a in e ~et~ .1....i tsas ineco3121.- 2.2.2.2. = and section +section 2.2.2.3,

Where: expressed in Btu's per standard cubic

Oo = 124,200 Btu (131,038 kj) per year, p (pilot flow in standard foot (kJ/L) of gas.

annual useful cooking energy output. L cubic feet per hour) 4.2.2.2.3 Total annual energy

EAOG = total annual gas energy consumption consumption of a conventional gas cooking

for conventional gas ovens as determined Where: top. Calculate the total annual energy

in section 4.1.2.5.2. Pc = any pilot lights gas consumption consumption of a conventional gas cooking

EAOE = total annual electrical energy idefined in section 3.2.2.1. top, EcA, in Btu's (kj) per year defined as:

consumption for conventional gas ovens Lc = elapsed time of the cooking top pilot as determined in section 4.1.2.5.2. lights testas defined in section 3.1.2.1. EA ECC + Epc, H= 3,412 Btu/kWh (3.6 kJ/Wh), conversion TT = the elapsed test time as defined in Wher

factor for kilowatt-hours to Btu's. section 3.2.2.

4.2 Conventional cooking top. 4.2.1.3 Cov cEcc energy consumption for cooking as 4.2.1i Conventional cooking top cooking determined in section 4.2.2.2.1.

4.2.1 Conventional king top cooking efficieny. Calculate the conventional Epc annual energy consumption of the pilot efficincy W C Where:facooking Effcr, top usingcooking efficiency, 4.2.1.1 Electric surface unit cookin oo oking efficiency, E, ing lights as determined in section 4.2.2.2.2.

efficiency. Calculate the cooking efficiency, 4.2.3 Conventional cooking top energy

Effsu. of the electric surface unit under test, factor. Calculate the energy factor or ratio of

defined as: nV Eff 1 fT ff useful cooking energy output for cooking to EffCT =I (EffsU) i' the total energy input, RCT, as follows:

1=1For M an electric cooking top, the energy

Effsu = W xC x SWhere: factor is the same as the cooking efficiency Efsu =Wp H Tn = number of surface units in the cooking as determined according to section 4.2.1.3.

Hex xCT top. For gas cooking tops,

Where: Effsu - the efficiency of each of the surface

W = measured weight of test block, W2 or W3, units, as determined according to section OCT

expressed in pounds (kg). 4.2.1.1 or section 4.2.1.2. CT =

Cp = 0.23 Btu/lb-°F (0.96 kJ/kg-'C), specific 4.2.2 Conventional cooking top annual CA

heat of test block. energy consumption. Where:

EE-RM-94-230 COMMENT 49L

Federal Register I Vol. 60, No. 56 I Thursday, March 23, 1995 I Proposed Rules 15355 

Eo '" test energy consumption as measured in 

section 3.2. 1 or calculated in section 

4.1.1 or section 4.1.1.1. 

He .. 3.412 BtulWh (3.6 kJlWh), conversion 

factor for watt-hours to Btu's. 

EIO .. electrical test energy consumption 

according to section 3.2.1 or as 

calculated in section 4.1.1.1. 

4.1.3.2 Multiple conventional ovens. If 

the cooking appliance includes more than 

one conventional oven, calculate the cooking 

efficiency for all of the conventional ovens in 

the appliance, EffTO, using the following 

equation: 

n 

Eff

TO 

= ±(_1 )' 

i=l EffAO i 

Where: 

n '" number of conventional ovens in the 

cooking appliance. 

EffAO '" cooking efficiency of each oven 

determined according to section 4.1.3.1. 

4.1.4 Conventional oven energy factor. 

Calculate the energy factor, or the ratio of 

useful cooking energy output to the total 

energy input, Ro, using the following 

equations: 

For electric ovens, 

Where: 

00" 35.5 kWh per year, annual useful 

cooking energy output. 

EAO .. total annual energy consumption for 

electric ovens as determined in section 

4.1.2.5.1. 

For gas ovens: 

Where: 

00 = 124,200 Btu (131.038 kJ) per year, 

annual useful cooking energy output. 

EAOG = total annual gas energy consumption 

for conventional gas OVE!ns as determined 

in section 4.1.2.5.2. 

, EAOE = total annual electrical energy 

consumption for conventional gas ovens 

as determined in section 4.1.2.5.2. 

He = 3,412 BtulkWh (3.6 kJlWh), conversion 

factor for kilowatt-hours to Btu's. 

4.2 Conventional cooking top. 

4.2.1 Conventional cooking top cooking 

effiCiency. 

4.2.1.1 Electric surface unit cooking 

effiCiency. Calculate the cooking efficiency, 

Effsu, of the electric surface unit under test, ' 

defined as: 

Effsu = W x Cp x,[ Tsu ), 

He xEcr 

Where: 

W .. measured weight of test block, W2 or W3, 

expressed in pounds (kg). 

c;. .. 0.23 Btul1b~oF (0.96 kJlkg-°C), specific 

heat of test block. 

T Su ..; temperature rise of the i:~t block: Final 

test block temperature, TCT, as 

determined in section 3.2.2, minus the 

initial test block temperature, TI , 

expressed in OF (OCl. 

He '" 3.412 BtulWh (3.6 kJlWh,) conversion 

factor of watt-hours to Btu's. 

Eer '" measured energy consumption, as 

determined according to section 3.2.2, 

expressedin watt-hours. 

4.2.1.2 Gas surface unit cooking 

efficiency. Calculate the cooking efficiency, 

Effsu. of the gas surface unit under test, 

defmedas: 

Where: 

W3 = measured weight oftest block as 

measured in section 3.3.2, expressed in 

pounds (kg). 

Cp and T su are the same as defined in section, 

4.2.1.1. 

and, 

E=[(Ecr-Ecp)xH]+(EIC xHe), 

Where: 

Ecr = total gas consumption for the gas 

surface unit test as measured in section 

3.2.2. 

EIC = electrical energy consumed by an 

ignition device of a gas surface unit as 

measured in section 3.2.2. 

He '" 3.412 BtulWh, conversion factor of watthours to Btu's. 

H = either H" or Hp , the heating value of the 

gas used in the test as specified in 

section 2.2.2.2 and section 2.2.2.3, 

expressed in Btu's per standard cubic 

foot (kJ1L) of gas. 

£CP' '" P x T T, (pilot consumption, in standard 

cubic feet (L), during unit test), where: 

P _ Pc (pilot flow in standard 

-L' cubic feet per hour) c 

Where: 

Pc" any pilot lights gas consumption 

defined in section 3.2.2.1. 

Lc = elapsed time of the cooking top pilot 

lights testaS defined in section 3.1.2.1. 

T T = the elapsed test time as defined in 

section 3.2.2. 

4.2.1.3 Conventional cooking top cooking 

effiCiency. Calculate the conventional 

cooking top cooking efficiency, Effcr, using 

the fOllowing equation: 

Where: 

n .. number of surface units in the cooking 

top. 

Effsu '" the efficiency of each of the surface 

units, as determined according to section 

4.2.1.1 or section 4.2.1.2. 

4.2.2 Conventional cooking top annual 

energy consumption. 

4.2.2.1 Conventional electric cooking top 

energy consumption. Calculate the annual 

energy consumption of an electric cooking 

top, EcA, in kilowatt-hours per year, defined 

as: 

Where: 

Ocr 

ECA =--. 

Effcr 

Ocr '" 209.4 kWh per year, annual useful 

cooking energy output. 

Effcr '" conventional cooking top cooking 

efficiency as defined in section 4.2.1.3. 

4.2.2.2 Conventional gas cooking top. 

4.2.2.2.1 Annual cooking energy 

consumption. Calculate the annual energy 

consumption for cooking, £ce, in Btu's (k.I) 

per year for a gas COOking top, defined as: 

Where: 

Ocr Ecc=--

Effcr 

Ocr ;= 732,500 Btu (772,828 kJ) per year, 

annual useful cooking energy output. 

Effer '" the gas cooking top efficiency as 

defined in section 4.2.1.3. 

4.2.2.2.2 Annual energy consumption of 

any continuously burning gas pilots. 

Calculate the annual energy consumption of 

any continuously burning gas pilot lights of 

the cooking top, Epc, in Btu's (kJ) per year, 

defined as: 

Epc =PxAxH, 

Where: 

P = pilot light gas flow rate as defined in 

section 4.2.1.2, or as measured in section 

3.2.2.1. 

A = 8,760 hours, the total number of hours 

in a year. 

H = either H. or Hp , the heating value of the 

gas used in the test as specified in 

, section 2.2.2.2. and section 2.2.2.3, 

expressed in Btu's per standard cubic 

foot (kJlL) of gas. 

4.2.2.2.3 Total annual energy 

consumption of a conventional gas cooking 

top. Calculate the total annual energy 

consumption of a conventional gas cooking 

top. EcA, in Btu's (k.I) per year, defined as: 

ECA = Ecc + Epc , 

Where: 

Ecc .. energy consumption for cooking as 

determined in section 4.2.2.2.1. 

Epe '" annual energy consumption of the pilot 

lights as determined in section 4.2.2.2.2. 

4.2.3 Conventional cooking top energy 

factor. Calculate the energy factor or ratio of 

useful cooking energy output for cooking to 

the total energy input, Rcr, asfollows: 

For an electric cooking top, the energy 

factor is the same as the cooking efficiency 

as determined according to section 4.2.1.3. 

For gas cooking tops, 

Where: 
15356 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

Ocr 732,500 Btu (772,828 kJ) per year. ET =4.4.3 Microwave oven annual energy annual useful cooking energy output of consumption. Calculate the microwave oven cooking top. 4.187Mw(T2 - T )+ 0.88Mc(T2 - To) annual energy consumption, EMo, in kWh's

EcA - total annual energy consumption of per year, defined as: cooking top determined according to HE

section 4.2.2.2.3. Where: EM XO

4.3 Combined Components. Mw - the measured mass of the test waterMO =

The annual energy consumption and load, in grams. ET

cooking efficiency of a kitchen range, e.g. a Mc - the measured mass of the test container Where

cooktop and oven combined, shall be the before filling with test water load, in sum of the annual energy consumption and grams.EM = the energy consumption as defined in

cooking efficiency of each of its components. T1 = the initial test water load temperature section 3.2.3.

The annual energy consumption and cooking in C (°F). OM - 77.3 kWh's per year, the microwave

efficiency for other combinations of ovens, T2 = the final test water load temperature, in oven annual useful cooking energy

cooktops and microwaves will also be treated °C (°F). output.

as the sum of the annual eneigy consumption To - the measured ambient room ET - the test energy as calculated in section

and cooking efficiency of each of its . temperature, in °F (°C). 4.4.1.

components. The energy factor of a combined C = 0.88 kl/kg-°C, (0.210 Btu/lb-°F) specific 4.4.4 Microwave oven cooking efficiency.

component is the sum of the ratio of the heat of test container. Calculate the microwave oven cooking annual useful cooking energy output to the Cp = 4.187 kJ/kg-°C, (1.0 Btu/lb-°F) specific efficiency, Effo, as specified in section four,

total annual energy consumption of each heat of water. aragraph 14 ofIEC 705.

component. Fl = 3.6 kJ/Wh (3.412 Btu/Wh,) conversion 5 cr oven en 4.4.5 Microwave oven enery factor. 4.4 Microwave oven. factor for Btu's to Watt-hours. Caculate the energy factor or the ratio ofthe

4.4.1 Microwave oven test energy. 4.4.2 Microwave oven test poweroutut useful cooking energy output to total energy Calculate the microwave oven test energy Calculate the microwave oven test power

output, ET, in watt-hour's (k ). The output, PT, in watts as specified in Section input on a yearly bass, RMO defined as calculation is repeated three times as four, paragraph 12.5 of IEC 705. The' O

required in section 3.2.3. The average of the calculation is repeated for each of the three R O

three ET's is used for calculations in 4.4.3 and tests as required in section 3.2.3. The average EM

4.4.5. For calculations specified in units of of the three PT's is used for calculations in M

energy (watt-hours), use the equation below: section 4.4.4. BLLING CODE 64O-O-P

, 

EE-RM-94-230 COMMENT 49L

15356 Federal Register / Vol. 60, No. 56 I Thursday, March 23, 1995 / Proposed Rules 

Ocr ... 732,SOO Btu (772,828 kJ) per year, 

annual useful cooking energy output of , 

cooking top. 

EcA .. total annwlI energy consumption of 

. cooking top detennined according to 

section 4.2.2.2.3. 

4.3 COmbined COmponents. 

The annual energy consumption and 

cooking effidency of a kitchen range, e.g. a 

cooktop and oven combined, shall be the, . 

. sum of the annual energy consumption and 

cooking effidency of each of its components. 

The annual energy consumption and cooking 

efficiency for other combinations of ovens, 

cooktops and microwaves will also be treated 

as the sum of the annual energy consumption 

and cooking efficiency of each of its 

components. The energy factor of a combined 

component is the sum of the ratio of the . 

annual useful cooking energy output to the 

total annual energy consumption of each 

component. 

4.4 MIcrowave oven. 

4.4.1 Microwave oven test energy. 

Calculate the microwave oven test energy 

, . output, ET, 10 watt-hour's ~}. The ' 

calculation is repeated three times as . 

required in section 3.2.3. The average of the 

three ET'S is used for calculations in 4.4.3 and 

4.4.S. For calculations spedfied in units of 

,energy (watt-hours), use theeqtiation ~loW: 

'Er = 

4.l87MW{T2 -T1)+O.88Mc(T2 -To) 

HE 

Where: 

Mw "= the measured mass of the test Water 

load, in grams. 

Mc .. the measured mass of the test container 

before filling with test water load, in 

grams. 

T I - the initial test water load temperature, 

in °C (oF). 

T 2 .. the final test water load temperature, in 

°C (oF). 

To" the measured ambient room temperature, in OF (OC). 

C .. 0.88 ~1kg_oC, (0.210 Btullb-oF) specific 

heat of test container. 

c;. ... 4.187 ~1kg_oC, (1.0 BtuIlb-oF) specific 

heat of water. 

Ii. .. 3.6 kj/Wh (3.412 BtulWh,) conversion 

factor for Btu's to Watt-hours. 

4.4.2 MIcrowave oven test power output. 

Calculate the microwave oven test power 

,output, PT, in watts as specified in Section 

four, paragraph 12.S oflEC 70S. The 

calculation is repeated for each of the three 

tests as required in section 3.2.3. The average 

of the three PT'S is used for calculations iIi 

section 4.4.4. ' 

4.4.3 Microwave oven annual energy 

consumpdon. Calculate the microwave oven 

annual energy consumption, EMO, in kWh's 

per year, defined as: 

Where: 

EM ... the energy consumption as defined in' 

section 3.2.3 .. 

OM'" 77.3 kWh's per year, the microwave 

oven annual useful cooking energy 

output. 

ET .. the test energy as calculated in section 

4.4.1. ' 

4.4.4 Microwave oVen cooklng efficIency. 

Calculate the microwave oven cooking 

efficiency, Eff'MO, as specified in section four, 

paragraph 14 oflEC 70S. . . 

'4.4.S Microwave oven enerllY factor. 

Calculate the ,energy factor or the ratio of the 

useful cooking energy output to total energy 

input on a yearly basis, RMO, defined as: 

OM RMO =--,. 

EMO 

BlWHO CODE M5O-O'I-P 

.-
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15357

5. ILLUSTRATION OF CONVENTIONAL OVEN TEST DATA

~. . .. ~TD

.T

IC~~~~~a.J~~~~~~~

T.

c I i B C--t-- n -

- Ts_-"B E -ag nr . -

: L; & . -. CD = Energy In

O 2 AboveOff ¢

E

ENERGY INPUT

BIN CODE- . On Cycle

BILLING CODE 64S001-C

EE-RM-94-230 COMMENT 49L

., 

Federal Register I Vol. 60. No. 56 I Thursday. March 23. 1995 I Proposed Rules 15357 

, 5. ILLUSTRATION OF CONVENTIONAL OVEN. TEST DATA I . . 

_.-

TB 

".,.- ---

T_. . 284 , All ... 

. ~ =., •. , T ........ ,. • 

BlUING CODE 8450-4~ 

T ·AS 

, 

, 

, 

, ...... -~I--- On Cycle-. ----...... , 

-

T ., 

.A • 

--

ENERGY .1 NPUT 

--rage 

CD = Energy In 

OffCycJe 
15358 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

Where: by the difference between weighted test load 2. Testing Conditions

OM - 77.3 kWh, annual useful cooking after the normal cycles and the weighted 2.1 Installation. Install the clothes washer

energy output. reference (bone-dry) weight of the test load. in accordance with manufacturer's

EMo - annual total energy consumption as 1.11 Nonwater-heating clothes washer instructions.

determined in section 4.4.3. refers to a clothes washer that has both hot 2.2 Electrical energy supply. Maintain the

6. Appendix J to subpart B of part 430 is and cold water supply pipe connections., electrical supply at the clothes washer

revised to read as follows: This type of clothes washer does not have an terminal block within 2 percent of 120/240

internal hot water heater device to generate or 120/208Y as applicable to the particular Appendix J to Subpart B of Part 430- the energy needed to heat inlet water. terminal block wiring system as specified by Uniform Test Method for Measuring the 1.12 Normal cycle means the cycle the manufacturer. If the clothes washer has

Energy Consumption of Automatic and recommended by the manufacturer for a dual voltage conversion capability, conduct

Semi-Automatic Clothes Washers washing cotton and/or linen clothes. the test at the highest voltage specified by the

.Deflnitons 1.13 Sensor filled refersto a type of water manufacturer.

fill control which automatically terminates 2. 3 Water temperature. For nonwater1.1 Agitator means the device that the fill when the water reaches an heating dothes washers not equipped with

provides the shaking or stirring motion to the aproriate level in the tubthermostaticaly controlled inlet water

clothes for washing. The device shall include 1. 14 S refe valves, the temperature of the hot and cold 1,14 Spray rinse cycle refers to a rinse all fixtures and other essential assemblies water supply shall be maintained at a 1 r F

needed for clothes washing in the normal cye in which water is spray±10F (37.8°C±5.5°C). For nonwater-heating

cycle. clothes load for a definite period of time clothes washers equipped with thermostatic

1.2 Bone-dry means a condition or a load without maintaining any specific water level controlled inlet valves, the temperature of the

of test oth which has been dried n a dryer in the clothes container. hot water supply shall be maintained at

at maximum temperature for minium a of 1. Standard refers to a clothes washer 140°F±5°F (60.0t

C±2.8oC) and the cold water

10 minutes, removed and weighed before which has a clothes container capacity of 1.6 supply shall be maintained at 60°F+5°F

cool down, and then dried again for 10- ft3 (45 L) or greater. (15.6°C2.8C). For water-heating clothes

minute periods until the final weight change 1.16 Suds-return means a feature or washers that have infinite or various

of the load is 1 percent or less. option on a clothes washer which causes the temperature selection feature, the

1.3 Clothes container means the stored wash water obtained by utilizing the temperature of the water supply shall be

compartment within the clothes washer that suds-saver feature to be pumped from the maintained at a minimum of 55°F (12.8°C)

holds the clothes during operation of the external laundry tub back into the clothes and a maximum of 60°F (15.6°C). Water

machine. washer. meters shall be installed in both the hot and

1.4 Compactrefers to a clothes washer 1.17 Suds-saver means a feature or option cold water lines to measure water

which has a clothes container capacity of less on a clothes washer which allows the user to consumption.

than 1.6 ft 3 (45 L). store used wash water in an external laundry 2.4 Water pressure. The static water

1.5 Deep rinse cyde refers to a rinse cycle tub for use with subsequent wash loads. pressure at the hot and cold water nlet

in which the clothes container is filled with 1.18 Temperature use factor means the connections of the machine shall be

water to a selected level and the clothes load percentage of the total number of washes a maintained during the test at 35 pounds per

is rinsed by agitating it or tumbling it through user would wash with a particular wash/ square inch gauge (psig)*2.5 psig (241.3

the water. rinse temperature setting. 'kPa*17.2 Kpa). The static water pressure for

1.6 Front-loadermeans a clothes washer 1.19 Thermostatically controlled valves a singe water inlet connection shall be

which sequentially rotates or tumbles refer to clothes washer valves which sense maintained during the test at 35 ps25 sg (241.3 Kpa±1 7.2 kPa). Water pressure gauges portions of the cothes load above the water water temperature and adjust valve orifices (241s be italled oth te ho and cold

level allowing the clothes load to fall freely appropriately to maintain a desired mixed water lines to measure water pressure.

clothes container is in a horizontal plane and 1.20 Time filledreferstoatypeofwater measurements using the following

the access to the clothes container is through fill control which uses a combination of instruments, as appropriate: the front of the machine.

7 Mchine-controlled water f water flow controls in conjunction with time 2.5. Weighing scales. i.7 Machine-controlled fTei water to terminate the water fill cycle. 2.5.1.1 Weighing scale for testcloth. The

capability means a clothes washer which has 1.21 Top-loader-horizontal-axs clothes scale shall have a range of 0 lbs (0 kg) to a the capability of automatically controlling washer means a clothes washer which maximum of 30 lbs (13.6 kg) with a the level of the water in vie tub dthetta osequentially rotates or tumbles portions of resolution of at least 0.2 oz(5.7 g) and a upon the size of the test load, without upon ethe size v of the test load, wcmthout the clothes load above the water level maximum error no greater than 0.3 percent

e18 Make-up water means the o amont of allowing the clothes load to fall freely back of any measured value within the range of 3

fre1. water needed suppment to the o into the water. The principal axis of the lbs (1.4 kg) to 15 lbs (6.8 kg).

eamount of stored water puped from the clothes container is in a horizontal plane and 2.5.1.2 Weighing scale for clothes

external laundry tub back into the clothes the access to the clothes container is through container capacity measurements. The scale

washer when the suds-rturn feature is the top of the clothes washer should have a range of 0 lbs (kg) to a electerial lenergy consumptin ant he energylo24 Wathetthese clothes washer rfs . 2 Wate of 0 Ibs ( ete a washer when the suds-return feature is- I "- V y, loader vertical axis clothes maximum of 500 lbs (226.8 kg) with a activated in order to achieve the required 1.22 Topoader-vertical-axis clothes maxresolution of 500 lbs (0226.23 kg)and a water washer means a clothes washer that flexes lution of 0.50 lbs (0.23 and a fill level in the clothes washer, maximum error no greater than 0.5 percent 1.9 Modified energy factormeans the and oscillates the submerged clothes'load of the measured value.

quotient of the cubic foot (liter) capacity of thugh the water by means of mechancal 2.5.2 Watt-hour meter. The watt-hour

the clothes container divided by the total agitation or other movement. The principal meter shall have a resolution of at least 1 Wh

clothes washer energy consumption per axis of the clothes container is in a vertical (3.6 k and a maximum error no greater than

cycle, expressed as the sum of the machine plane and the access to the clothes container 2 percent of the measured value forany

electrical energy consumption, the hot water i through the top of the cothes washer. demand greater than 50 Wh (180.0 k).

energy consumption, and the energy required 1.23 Water onsumptionfactor means the 2.5.3 Temperature sensing device. The

for removal of remaining moisture of the est quotient of the cubic foot (liter) capacity of temperature sensing device shall have an load for nonwater-heating clothes washers the cothes washer divided by the total error no greater than ±1 F (:0.6C) over the

and expressed as the sum of the machine weighted per-cycle water consumption. range of 32°F (0°C) to 200°F (93.30

C).

electrical energy consumption and the energy 1.24 Water-heating clothes washer refers 2.5.4 Water meter. The water meter shall

required for removal of moisture of the test to a clothes washer which does not have a have a resolution no larger than 0. 1 gallons load for water-heating clothes washers. supply pipe connection for hot water. This (0.4 liters) and a maximum error no greater 1.10 Moisture removal energy means the . type of clothes washer does have an internal than 2 percent for all water flow rates from

nominal energy required for a clothes dryer electrical water heating device to generate the 1 .gl/min (3.8L/min) to 5 gal/min (18.9 L/

to remove moisture from clothes multiplied energy needed to heat inlet water. rin).

EE-RM-94-230 COMMENT 49L

15358 Federal Register I Vol. 60, No. 56 I Thursday, March 23, 1995 I. Proposed Rules 

Where: 

Ow ... 77.3 kWh, annual useful cooking 

energy output. 

EMD ... annual total energy consumption as 

detennined in section 4.4.3. 

6. Appendbc J to subpart Bof part 430 is 

revised to read as follows: 

Appendix J to SubpartB of Part 4,3OcUniform Test Method for Measuring ,the 

Energy Consumption of Automatic and 

Semi-Automatic Clothes Washers ' 

I. Definitions 

1.1 Ag1tator means the device that 

provides the shaking or stirring motion to the 

, clothes for washing. The device shall include 

all fixtures aixI other essential assemblies 

, needed for clothes washing in the normal 

cycle. 

1.2 Bone-clry means a condition or a load 

of test cloth which has been dried in a dryer 

at maximum temperature for a minimum of 

10 minutes, rerrioved and weighed before 

cool down, and then dried again for 10-

minute periods until the flnal weight change 

of the load is 1 percent or I~. 

1.3 Clothes conta1nermeans the 

compartment within the clothes washer that 

holds the clothes during operation of the 

machine. 

1.4 Compact refers to a clothes washer ' 

which has a clothes cOntainer capaCity of less 

,than 1.6 ft 3 (45 L). , 

,1.5 Deep r1nse cycle refers to a rinse cycle 

in which the clothes container is ftlled with 

water to a selected level and the clothes load 

'is rinsed by agitating it or tumbling it' through 

the water. ' 

1.6 Front-loader means a clothes washer 

which sequentla11y rotates or tumbles ' 

portions of the clothes load above the water 

level alloWing the clothes load to fall freely 

back into the water. The principal axis of the 

clothes container is in ,a horizontal plane and 

the access to the clothes container is through , 

the front of the machine. 

1.7 Machine-controlled water flH 

capability means a clothes washer which has 

the capabilitY of automatically controlling 

the level of the water in the tub dependent 

upon the size of the test load, without 

operator intervention. 

I.SMake-up water means the amount of 

fresh water needed to supplement the 

amount of stored water pumped from the 

extemallauhdry tub back into the clothes 

washer when the suds-return feature isactivated in order to achieve the required 

water flll level in the clothes washer. 

1.9 ModlfJed energy factor means the 

quotient of the cubic foot (l1ter) capadty of 

the clothes container divided by the total 

clothes washer energy consumption per 

cycle, expressed as the sum of the machine 

electrical energy consumption, the hot water 

energy consumption, and the 'energy reqUired, 

for removal of remaining moisture of the 'test 

load for nonwater-heating clothes washers 

and expressed as the sum of the machine 

electrical ener&y consumption and ,the eriergy 

required for rerrioval of moisture' of the test 

load for water-heating clothes washers. 

, 1.10', Moisture removal eneixY means the 

nominal energy required for a clothes dryer 

, to remove moisture from clothes multiplied 

by the, difference between weighted test load 

after the normal cycles and the weighted 

reference (bone-dry) weight of the test load. 

1.11 Nonwater-heatlng clothes washer 

refers to a clothes washer that has both hot 

and cold water supply pipe connections., ' 

This type of clothes washer does not have an . 

internal hOt water heater device to generate , 

the energy needed to heat inlet water. 

1.12 Normal cycle means the cycle 

recommended by the maiuifacturer for 

washing cotton and/or linen clothes. ' 

1.13' Sensor nDed refers to a type of water 

fill control which automatically terminates 

the·nil when the water reaches an 

appropriate level in the tub. 

1.14 Spray rinse cycle refers to a rinse 

cycle in which water is spr~yed onto the 

clothes load for a definite period of time 

without maintaining any spedfic water level 

in the clothes container. 

1. Standard refers to a clothes washer 

which has a clothes container capac1ty of 1.6 

ft3 (45 L) or greater. ' 

1.16 Suds~retw7i means a feature or 

option on a clothes washer which causes the' 

stored wash water obtained by util1z1ng the 

suds-sav~r featUre to be pumped from the 

external laundry tub back into the clothes 

washer. " 

,1.17 ,Si.Jds~saver means a feature or option 

on a clothes washer which anows the user to 

,store" used wash water in an extemallaundry 

tub for use with subsequent wash loads. 

1. IS ,Temperature use factor means the 

percentage of the total number of washes a 

user would wash with a particular wash! 

rinse temperature settlrlg. 

1.19 Thermostatically controlled valves 

refer to clothes washer valves which sense 

water temperature and adjust valve orifices 

appropriately to maintain a desired mixed 

water temperature; 

1.20' Time flHedrefers to a type of water 

fill control which uses'a combination of 

water flow cOntrols in conjunction with time 

to terminate the water fill cycle. 

1.21 Top-loader-horlzontal-axis clothes 

washer m(!ans a clotheS washer which 

sequentla11y rotates or tum~les pqrtlons of 

the clothes load above the water level 

allowing the clothes load to fall freely back 

into the water. The princlpal axis of the , 

clothes container is in a horizontal plane and 

the access to the clothes container is through 

the top of the clothes washer. 

1.22 Top-loader-vertlcal-axls clothes 

washer means a clothes washer that flexes 

and oscillates the submerged clothes'load 

through the water by means of mechanical 

agitation or other movement. The principal 

axis of the clothes conta1neris in a vertical 

plane and the access to the clothes container 

is through the top of the clothes washer. 

1 ;23 Water eonsuplptlon factor means the 

quotient of the cubic foot (l1ter) capacity of 

the clothes washer divided by the total 

weighted per<ycle water consumption. 

1,.24 Water-heating clothes washer refers 

to a clothes washer which does not have a 

supply pipe connection for hot water. This 

type of clothes washer does have an internal 

,electrical water heatlng device to generate the 

energy ,needed to heat inlet water. ' 

2. Testing Conditions 

2.1 lnstallation. Install the clothes washer 

in accordance with manufacturer's . instructions. ' 

2.2 Electrlcal enerllY supply. Maintain the 

electrical supply at the clothes washer 

terminal block within 2 percent of 120/240 

or 120/208Y as appUcable to the particular 

terminal block wiring system as specified by 

the 'manufacturer. If the clothes washer has 

a dual voltage conversion capability, conduct 

the test at the highest voltage specified by the 

manufacturer. ': ' 

2.3 Water temperature, For nonwater-, 

heating clothes washers not equipped with 

thermostaticany controlled inlet water 

valves, the temperature of the hot and cold 

'water supply shall be mafutained at 100°F 

±10°F (37.soC±5.5°C). For nonwater-heating 

clothes washers equipped with thermostatic 

controlled inlet valves, the temperature of the 

hot water supply shall be maintained at 

140°F±5°F (60.O"C±2.SoC) and the cold water 

supply shall be maintained at 6O°F±5°F 

(15.6°C±2.S0C). For water-heating clothes 

washers that have 1nftn1te or 'various 

, temperatUre selection feature; the 

temperature of the water supply shall be 

ma1ntained at a minimUJII of 55°F (12.S°C) 

and a maximum of 60°F (15.6°C). Water 

meters shall be installed in both the hot and 

cold water lines to measure water ' 

consumption. 

?.4 Water pressure. The static water 

pressure at the hot and cold water inlet 

connections of the mac:h1ne shall be 

maintained during the test at 35 pounds per 

square inCh puge (psfg)±2.5 psig (241.3 ' 

kPa±17.2 Kpa). The static water pressure for 

a single water inlet connection shall be 

maintained during the test at 35 psig±2.5 psfg 

(241.3 Kpa±17.2 kPa). Water pressUre puges 

shall be installedbi'both the hOt and cold 

water lines to measure water pressure. , 2.5 Instrumentation. Perform all test 

measurements using the follOwing 

instruments, as appropriate: 

2.5. Welghlng scales. 

2.5.1.1 Welghlng scale for test cloth. The 

scale shall have a range of 0 Ibs (O kg) to a 

maximum of 30 Ibs {l3.6 Jcs} with a 

resolution of at least 0.2 oz (5.7 g) and a 

maximum error no greater than 0.3 percent, 

of any measured value within the range of 3 

Ibs {1.4 Jcs} to 151bs (6.8 kg). 

2.5.1.2 Weighing scale for clothes 

contamer capacity measurements. The scale, 

should have a range of 0 Ibs (Okg) to a 

maximum of 500 Ibs {226.S Jcs} with a 

, resolution of 0.50 Ibs (0.23 kg) and a 

maximum error no greater than 0.5 percent 

of the measured value. '.. 

2.5.2 .Watt~holU meter. The watt-hour 

meter shall have a resolution of at least I Wh 

{3.6 ~ and a maximum error no greater than 

. 2 percent of the measured value for any 

demand greater than 50 Wh {180.0~. 

2.5.3 Temperature sensing device. The 

temperature sensing device shan have an 

error no greater than ±1°F (±O.6°C) over the 

,range of 32°F (O°C) to 200°F (93.3°C). 

2.5.4 Water meter. The water meter stulll 

have a resolution no larger than 0.1 gallons 

(0.4 liters) and a maximum error no greater 

,than 2 percent for all water flow rates from 

l,galImin (3.SUm1n) to 5 galIm1n (1S.~ U 

tnin). . 

',' 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15359

2.5.5 Water pressure gauge. The water shaking them to hang loosely and then W

pressure gauge shall have a resolution of 1 dropping them into the clothes container C=-

psig (6.9 kPa) and shall have an error no prior to activating the clothes washer. P

greater than 5 percent of any measured value 2.9 Preconditioning. If the clothes washer Where: over the range of 32.5 psig (224.1 kPa) to 37.5 has not previously been tested nor filled with C = capacity in cubic feet (liters).

psig (258.6 kPa). the preceding 96 houpounds in = mass of water (kilograms).

2.6 1Test clothsc.otTe nn precondition it by running it through a cold p = density of water at the measured

2.6.1 Enegytest cloth. The energy test rinse cycle and then draining it to insure that temperature in pounds per cubic foot

cloth shall be clean and consist of the the hose, pump, and sump are filled with (kilograms per liter). following:

2.6.1.2 Pure finished bleached cloth. Pure wate3.2 Test cycle. Establish the test

finished bleached cloth, made with a momle 2.10 Washtimesetting.Theactual wash conditions set forth in section 2 of this

or granite weave, which is 50 percent cotton time (period of agitation) shall be not less appendix. Automatic and semi-automatic

and 50 percent polyester and weighs 5.75 oz/ than 9.75 minutes. clothes washers that have Infinite or various

yd2 (195.0 g/m2) and has 65 ends on the warp 2.11 Agitator and spin speedsettings, temperature selection features that do not

and 57 picks on the fill. Where controls are provided for agitation and conform to the wash/rinse temperature

2.6.1.3 Cloth material. Cloth material that spin speed selections, set them at the normal combination settings of sections 5 or 6 shall

is 24 in by 36 in (61.0 cm by 91.4 cm) and cycle settings. If settings at the normal cycle be tested at the following temperature

has been hemmed to 22 in by 34 in (55.9 cm are not offered, set the control settings to the settings: Hottest setting available on the

by 86.4 cm) before washing. The maximum maximum levels permitted on the clothes machine, hot (a minimum of 140°F (60.0°C)

shrinkage after five washes shall not be more washer. and a maximum of 145°F (62.8°C)), warm (a

than four percent on the length and width. Tt Masmen minimum of 100°F (37.8°C) and a maximum

2.6.1.4 Numberof tests. The number of es t easurementsof 105°F (40.6°C)), and coldest setting

test runs on the same energy test cloth shall 3.1 Clothes container capacity. Measure available on the machine.

not exceed 25 runs. the entire volume which a dry clothes load 3.2.1 Nonwater-heating clothes washers.

2.6.2 Energy stuffier cloths. The energy could occupy within the clothes container, 3.2.1.1 Per-cycle electrical energy

stuffier cloths shall be made from energy test according to sections 3.1.1 and 3.1.2. consumption. Set the water level selector at

cloth material and shall consist of pieces of 3.1.1 Top-loader-vertical-axiclothes maximum fill available on the clothes washer

material that are 12 in by 12 in (30.5 cm by washer. Line the clothes container and and nsert the appropriate test load, if

30.5 cm) and have been hemmed to 10 in by agitator with 2 mil (0.051 mm) plastic sheet applicable. Activate the normal cycle of the

10 in (25.4 cm by 25.4 cm) before washing. or use some other method to prevent the clothes washer and also any suds-saver

The maximum shrinkage after five washes water from entering the outer tub container switch.

shall not be more than four percent on the and into the agitator. The agitator shall be in 3.2.1.1.1 Measure the electrical energy length and width. The number of test runs on place. Fill the clothes container with water consumption of the clothes washer for the

the same energy stuffier cloth shall not to its uppermost edge. (This filling procedure complete normal cycle.

exceed 25 runs. otslamay require overriding of the fill level 3.2.1.2 Hot and cold water consumption 2.7 Composition of test loads. control, or manually completing the fill to with the water level selector at maximum fill

2.7. Seven pound test load. Theseven the top of the container after the fill sensor available on the clothes washer, if manually pound test load shall consist of bone-dry terminates the fil at maximum level.) Record controlled

energy test cloths which weigh 7f0.07 lbsefore filling it 3.2.1.2.1 Set the water level selector at

(3.18±:0.03 kg). Adjustments to the test load th water andof the machine before filling t wtthe clothes waher

to achieve the proper weight can be made by wthe er ith maximum fill available on the clothes washer to achieve tnhe proper weignt can De mare y

the use of energy stuffier cloths. water. The clothes container capacity is and nsert the appropriate test load. Activate

2.7.2 Three pound test load The three calculated as follows: the normal cycle of the clothes washer and

pound test load shall consist of bone-dry also any suds-saver switch.

energy test cloths which weigh 3±0.03 lbs W 3.2.1.2.2 For automatic clothes washers,

(1.36±0.014 kg). Adjustments to the test load C set the wash/rinse temperature selector to the

to achieve the proper weight can be made by hottest TUF combination setting. For semithe use of energy stuffier cloths. Where: automatic clothes washers, open the hot

2.8 Use of test loads. C = capacity in cubic feet (liters). water faucet valve completely and close the

2.8.1 Top-loader-vertical-axis clothes W = mass of water in pounds (kilograms). cold water faucet valve completely to achieve

washers for calculating energy factor. The p = density of water at the measured the hottest TUF combination setting.

top-loader clothes washer shall be tested temperature in pounds per cubic foot 3.2.1.2.3 Measure the respective number

without a test load, except for clothes (kilograms per liter). of gallons (liters) of hot and cold water used

washers equipped with machine controlled 3.1.2 Front-loader and top-loader- to fill the tub for the wash cycle.

water fill capability. Machine controlled horizontal-axs clothes washer. For front- 3.2.1.2.4 Measure the respective number

water fill capable clothes washers shall use loader-horizontal-axis clothes washers, of gallons (liters) of hot and cold water used

a test load per section 2.8.2. position the tub and shaft axis vertically with for al deep rinse cycles. 2.8.2 Front-loader, top-loader-horizontal- the tub facing up. For top-loader-horizontal- 3.2.1.2.5 Measure the respective gallons

axis, top-loadvevertical-axis with machine- axis clothes washers, position the washer in iters) of hot and cold water used for all

controlled water fill capable and top-loader- spray rinse cycles. its upright position and the centerline of the spray rinse cycles. vertical-axis for calculating modified energy inner door at the the 3.2.1.2.6 For automatic clothes washers

factor, clothes washers. i n ne r d a t t he op position. L n e th e repeat sections 3.2.1.2.3, 3.2.1.2.4, and

2.8.2.1 Standard size clothes washer. clothes container with 2 mi (0.051 mm) 3.2.1.2.5 for each of the other wash/rinse

When the maximum water fill level is being plastic sheet or use some other method to temperature selections available that use hot

tested, the test load shall be seven pounds as prevent the water from entering the outer tub water. For semi-automatic clothes washers

described in section 2.7.1. When the container. Fill the clothes container with repeat sections 3.2.1.2.3, 3.2.1.2.4, and

minimum water fill level is being tested, the water to its uppermost edge. This filling 32.1.2.5 for the TUFs in section 6 with the

test load shall be three pounds as described procedure may require overriding of the fill following water faucet valve adjustments:

in section 2.7.2. level control, or manually completing the fill

2.8.2.2 Compact size clothes washer. to the top of the container after the fill sensorFaucet position

When either the maximum or minimum terminates the fill at maximum level.) Record

water fill levels are being tested, the test load the weight of the machine before filling it Hot valve Cold valve

shall be as described in section 2.7.2. with water and then after filling it with

2.8.3 Method of loading. Load the energy water. The clothes container capacity is Hot................ Completely Closed.

test clothes by grasping them in the center, calculated as follows: open.

EE-RM-94-230 COMMENT 49L

Federal Register I Vol. 60, No. 56 I Thursday, March 23, 1995 I Proposed Rules 15359 

2.5.5 Water pressure gauge. The water shaking them to hang loosely and then 

pressure gauge shall have a resolution of 1 dropping them into the clothes container 

psig (6.9 kPa) and shall have an error no prior to activating the clothes washer. 

greater than 5 percent of any measured value 2.9 Preconditioning. If the clothes washer 

over the range of 32.5 psig (224.1 kPa) to 37.5 has not previously been tested nor ftlled with 

psig (258.6 kPa). water in the preceding 96 hours. 

2.6 Test cloths. precondition it by running it through a cold 

2.6.1 Energy test cloth. The energy test rinse cycle and then draining it to insure that 

cloth shall be clean and consist ·of the the hose, pump. and sump are filled with 

following: . 2.6.1.2 Pure flnished bleached cloth. Pure water. 

finished bleached cloth. made with a momie 2.10 Wash time setting. The actual wash 

or granite weave. which is 50 percent cotton. time (period of agitation) shall be not less 

and 50 percent polyester and weighs 5.75 OZ/ than 9.75mtnutes. 

yd2 (195.0 g/m2) and has 65 ends on the warp 2.11 Agitator and spin speed settings. 

and 57 picks on the fill. Where controls are provided for agitation and 

2.6.1.3 Cloth material. Cloth material that spin speed selections. set them at the normal 

is 24 in by 36 in (61.0 cm by 91.4 em) and cYcle settings. If settings at the normal cycle 

has been hemmed to 22 in by 34 in (55.9 cm are not offered. set the control settings to the 

by 86.4 cm) before washing. The maximum maximum levels permitted on the clothes 

shrinkage after five washes shall not be more washer. 

than four percent on the length and width. 3. Test Measurements 

2.6.1.4 Number of tests. The number of 

test runs on the same energy test cloth shall 3.1 Clothes container capacity. Measure 

not exceed 25 runs. . the entire volume which a dry clothes load 

2.6.2 Energy stuffier cloths. The energy could occupy withtnthe clothes container. 

stuffier cloths shall be made from energy test according to sections 3.1.1 and 3.1.2. 

cloth material and shall consist of pieces of 3.1.1 Top-loader-vertical-axis clothes 

material that are 12 in by 12in (30.5 cm by washer. Une the clothes container and 

30.5 cm) and have been hemmed to lOin by agitator with 2 mil (0.051 mm) plastic sheet 

10 in (25.4 cm by 25.4 cm) before washing. or use some other method to prevent the 

The maximum shrinkage after five washes water from entering the outer tub container 

shall not be more than four percent on the and into the agitator. The agitator shall be in 

length and width. The number of test runs on . place. Fill the clothes container with water 

the same energy stuffier cloth shall not to its uppermost edge. (This filling procedure 

exceed 25 runs. may require overriding of the ftlllevel 

2.7 Composition of test loads. . control. or manually completing the fill to 

2.7.1 Seven pound test load. The seven the top of the container after the fill sensor 

pound test load shall consist of bone-dry terminates the rul at maximum level.) Record 

energy test cloths which weigh 7±O.07 Ibs the weight of the machine before ruling it 

(3. 18±O.03 kg). Adjustments to the test load with water and then after fillin it with 

to achieve the proper weight can be made by t Th cl the tai g ity is 

the use of energy stuffier cloths. wa er. e 0 s c~n ner capac . 

2.7.2 11Jree pound test load. The three calculated as follows. 

pound test load shal1.consist of bone-dry 

energy test cloths which weigh 3±O.03 Ibs 

(1.36±O.014 kg). Adjustments to the test load 

to achieve the proper weight can be made by 

the use of energy stuffier cloths. 

2.8 Use of test loads. 

2.8.1 Top-loader-vertical-axis clothes 

washers for calculating energy factor. The 

top-loader clothes washer shall be tested 

without a test load. except for clothes 

washers equipped with machine controlled 

water fill capabllity. Machine controlled 

water fill capable clothes washers shall use 

. a test load per section 2.8.2. 

2.8.2 Front-loader. top-loader-hor1zontalaxis. top-loader-vertical-axis with machlnecontrolled water fill capable and top-loadervertical-axis for calculating modlfled energy 

factor. clothes washers. 

2.8.2.1 Standard size clothes washer. 

When the maximum water fill level is being 

tested. the test load shall be seven pounds as described in section 2.7.1. When the 

mtntmum water fill level is being tested. the 

test load shall be three pounds as described 

in section 2.7.2. 

2.8.2.2 Compact size clothes washer. 

When either the maximum or minimum 

water fill levels are being tested. the test load 

shall be as described in section 2.7.2. 

2.8.3 Method of loading. Load the energy 

test clothes by grasping them in the center. 

Where: 

w 

c=-

p 

C = capadty in cubic feet (liters). 

W = mass of water in pounds (kilograms). 

p = density of water at the measured 

temperature in pounds per cubic foot 

(kilograms per liter). 

3.1.2 Front-loader and top-loaderhorizontal-axis clothes washer. For frontloader-horizontal-axis clothes ,washers. 

position the tub and shaft axis vertically with 

the tub fadng up. For top-Ioader-horizontal- . 

axis clothes washers. poSition the washer, in 

its upright position and the centerline of the 

inner door at the top position. Une the 

clothes container with 2 mil (0.051 mm) 

plastic sheet or use some other method to 

prevent the water from entering the outer tub 

container. FUI the clothes container with 

water to its uppermost edge. (This ftlllng 

procedure may require overriding of the fill 

level control. or manually completing the fUI 

to the top of the container after the fill sensor 

terminates the fill at maximum level.) Record 

the weight of the machine before filling it 

with water and then after filling it with 

water. The clothes container capacity is 

calculated as follows: 

Where: 

. W 

c=-p 

C= capacity in cubic feet (liters). 

W = mass of water in pounds (kilograms). 

p = density of water at the measured 

temperature in pounds per cubic foot 

(kilograms per liter). 

3.2· Test cycle. Establish the test 

conditions set forth in section 2 of this 

appendix. Automatic and semi-automatic 

clothes washers that have infinite or various 

temperature selection features that do not 

conform to the wash/rinse temperature· 

combination settings of sections 5 or 6 shall 

be tested at the following temperature 

settings: Hottest setting avaUable on the 

machine. hot {a minimum of 140°F (60.0°C) 

and a maximum of 145°F (62.8°C». warm {a 

'minimum of 100°F (37.8°C) and a maximum 

of 105°F (40.6°C». and coldest setting 

available on the machine. 

3.2.1 Nonwater-heatlng clothes washers. 

3.2.1.1 Per-cycle electrical energy 

consumption. Set the water level selector at 

maximum fill avaUable on the clothes washer 

and insert the appropriate test load. if 

applicable. Activate the normal cycle of the 

clothes washer and also any suds-saver 

switch. . 

3.2.1.1.1 Measure the electrical energy 

consumption of the clothes washer for the 

complete normal cycle. 

3.2.1.2 Hot and cold water consumption 

with the water level selector at maximum fl11 

available on the clothes washer. If manually 

controlled. 

3.2.1.2.1 Set the water level selector at 

maximum rul avaUable on the clothes williher 

and insert the appropriate test load. Activate 

the normal cycle of the clothes washer and 

also any suds-saver switch. 

3.2.1.2. 2 For automatic clothes washers. 

set the wash/rinse temperature selector to the 

hottest TUF combination setting. For semiautomatic clothes washers. open the hot 

water faucet valve completely and close the 

cold water faucet valve completely to achieve 

the hottest TUF combination setting. 

3.2.1.2.3 Measure the respective number 

of gallons (liters) of hot and cold water used 

to rul the tub for the wash cycle. 

3.2.1.2.4 Measure the respective number 

of gallons (liters) of hot and cold water used 

for all deep rinse cycles . 

3.2.1.2.5 Measure the respective gallons 

(liters) of hot and cold water used for all 

spray rinse cycles. 

3.2.1.2.6 For automatic clothes washers 

repeat sections 3.2.1.2;3.3.2.1.2.4. and 

3.2.1.2.5 for each of the other wash/rinse 

temperature selections avaUable ·tbat use hot 

water. For semi-automatic clothes washers 

repeat sections 3.2.1.2.3. 3.2.1.2.4. and 

3..2.1.2.5 for the TUFs in section 6 with the 

following water faucet valve adjustments: 

Faucet position 

Hot valve Cold valve 

Hot ................ Completely Closed. 

open. 
15360 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

Faucet position and complete testing. Measure and record the Vhj and Vq, measured at minimum fill level

kilowatt-hours of electrical energy consumed for each wash/rinse TUF combination setting

Hot valve Cold valve for the complete cycle as Ehi. in section 3.2.1.3, excluding any fresh make3.2.2.1.3 Warm wash at maximum fil1 up water required to complete the fill during

Warm ......... Completely Completely Repeat section 3.2.2.1.2 for a warm wash a suds-return cycle.

open. open. setting at a minimum of100°F (37.8°C) and 3.4.1.4 Recordtheindividualgallons

Cold......... Closed......... Completely a maximum of 105°F (40.6°C). Measure and (liters) of hot and cold water, ShH and ScH,

open. record the kilowatt-hours of electrical energy measured at maximum fill for the suds-return

consumed for the complete cycle as E,,.,. cycle.

3.2.1.2.7 Set the suds-saver switch to 3.2.2.1.4 Cold wash at maximum fll. 3.4.1.5 Record the individualgallons

activate the suds-return. Repeat sections Repeat section 3.2.2.1.1 for the coldest water (liters) of hot and cold water, ShL and SCL,

3.2.1.2.3 to 3.2.1.2.5 for a Warm/Cold setting. Measure and record the kilowatt- measured at minimum fill for the suds-return

temperature setting. hours of electrical energy consumed for the cycle.

3.2.1.3 Hot and cold water consumption complete cycle as Ecm. Ensure that the inlet 3.4.2 Water-heating clothes washers.

with the water level selector at minimum fil. water temperature is maintained per section 3.4.2.1 Record the kilowatt-hours of

Set the water level selector at minimum fill 2.3. electrical energy Ean., E.ma., Ew,.x, and

and insert the appropriate test load. Activate 3.2.2.2 Per-cycle water consumption at Ec. consumed at maximum fill level for

the normal cycle of the clothes washer and maximum fill. Measure the total number of each wash/rinse TUF combination setting in

also any suds-saver switch. Repeat sections gallons (liters) of water used in sections sections 3.2.2.1.1, 3.2.2.1.2, 3.2.2.1.3, and

3.2.1.2.2 through 3.2.1.2.7. 3.2.2.1.1, 3.2.2.1.2, 3.2.2.1.3, and 3.2.2.1.4, 3.2.2.1.4, respectively.

3.2.1.4 Hot and cold water consumption including all wash, deep rinse, and spray 3.4.2.2 Record the total gallons (liters) of

for clothes washers that incorporate a partial rinse cycles as VhaTM, Vbx., V-,,, and water consumption, Vhmu. Vma, V.,... and

fill during the rinse cycle. When sections Vo. V., measured at maximum fill level for

3.2.1.2 and 3'2.1.3 cannot be used for clothes 3.2.2.3 Per-cycle electrical energy each wash/rinse TUF combination setting in

washers that incorporate a partial fl during consumption at minimum fill. Set the water section 3.2.2.2.

the rinse cycle, activate any suds-saver level selector to the minimum fill position, 3.4.2.3 Record the kilowatt-hours of

switch and operate the clothes washer for the f manually controlled. electrical energy, Eat ,. Eh E,, F, . and

* complete normal cycle at both the maximum 3.2.2.3.1 Hottest wash at minimum fill. E,. consumed at minimum fill level for

water full level and the minimum water fill .Repeat section 3.2.2.1.1. Measure and record each wash/rinse TUF combination setting in

level for each of the wash/rinse temperature the kilowatt-hours of electrical energy section 3.2.2.3.1, 3.2.2.3.2, 3.2.2.3.3, and

selections available. Measure the respective consumed for the complete cycle as Ei . 3.2.2.3.4, respectively.

hot and coldlwater consumed during te 3.2.2.3.2 Hot wash at minimum fill. 3.4.2.4 Record the total gallons (liters) of

hot and cold-water clonsumed during the Repeat section 3.2.2.1.2. The hot wash setting water consumption, ¥hb,,, Vhai.. V.w.,, and

3.2.2 Water-heaing clothes washers. For shall be at a minimum of 140°F (60.0°C) and V, measured at minimum fill level for

w ater-heating clothes washers thefollowing a maximum of 145°F (62.80C). Measure and each wash/rinse TUF combination setting in

watemperature seting s wia be tested: honest record the kilowatt-hours of electrical energy section 3.2.2.4.

temperature settings will b tested: e hottest temperature msettings be consumed for the complete cycle as E .. - 3.4.3 Record the weight of the test loads:

setting available on the machine, hot (a 3.2.2.3.3 Warm wash at minimum fill. W,, and Wi, after completion of test t

eminimumpofa40F (60.C ) a nd a m a

xi m um Repeat section 3.2.2.1,2 for warm wash cycles in section 3.3. of 145°F (62.8°C)), yof 145eF warm (a c at minimum einergy `F of setting at a minimum of 100° F 1(37.8°C) and 4. Calculation ofDerfved Results From Test 1000F (37.80

C) and a maximum of 105°F a maximum of 1050F (40.60

C). Measure and

(40.6C)), and coldest setting available on the record the kilowatt-hours of electrical energy Measurements

machine. These temperatur macie e must be ese temerature mu econsumed for the complete cycle as Ewe. 4.1 Energy consumption. confirmed by measurement using a 3.2.2.3.4 Cold wash at minimum fill. 4.1.1 Nonwater-heatng othes washers.

temperature sensing device. Repeat section 3.2.2.1.1 for the coldest wash 4.1.1.1 Per-cycle temperature-weighted 3.2.2.1 Per-cycle electrical energy setting. Measure and record the kilowatt- hot water consumption for maximum and

consumption atmaxlmum fill. Set the water hours of electrical energy consumed for the minimum water fill levels. Calculate for the

level selector at maximum fill available on complete cycle as E.in. Ensure that the inlet cycle under test the per-cycle temperature the clothes washer, if manually controlled. water temperature is maintained per section weighted hot water consumption for the

3.2.2.1.1 Hottest wash at maximum fill. 2.3. maximum water fill level, Vhw, and for the

Activate the machine and nsert the 3.2.2.4 Per-cycle water consumption at minimum water fill level, Vhi,. expressed in

appropriate test load, if applicable. Select the minimum fil. Measure the total number of gallons per cycle (lters per cycle) and

normal or its equivalent wash cycle. Where gallons (liters) of water usedinsections defined as: spin speed selection is available, set the 3.2.2.3.1, 3.2.2.3.2. 3.2.2.3.3, and 3.2.2.3.4,

control to its maximum setting Set the water including all wash, deep rinse, and spray

temperature selector to the hottest setting and rinse cycles. Vh= 1 +

activate the wash cycle. Measure and record 3.3 Moisture content of testload. Weigh= the kilowatt-hours of electrical energy the test loads after completion of test cycles consumed for the complete cycle as E.n. in warm wash/cold rinse or cold wash/cold

3.2.2.1.2 Hot wash at maximum fill. rinse temperature setting for both maximumn X TUF, xShtl

Insert a water temperature sensing device and minimum water fills.

inside the inner drum prior to testing. 3.4 Data rording. Record for each test Where:

Activate the machine and insert the cycle in sections 3.2.1 through 3.3. Vhi = reported hot water consumption in

appropriate test load., f applicable. Select the 3.4.1 Nonwater-heating clothes washers. gallons per cycle (liters per cycle) at

normal or its equivalent wash cycle. Where 3.4.1.1 Record the kilowatt-hours of maximum fill for each wash/cycle TUF

spin speed selection is available, set the electrical energy, M, consumed during the combination setting, as provided in

control to its maximum setting. Set the water test to operate the clothes washer in section section 3.4.1.2. (If a clothes washer Is

temperature selector to the hot setting (a 3.2.1.1. equipped with two different wash/rinse

minimum of 140°F (60.0°C) and a maximum 3.4.1.2 Recordthe individual gallons temperature selections that have the

of 145°F (62.8°C)) and activate the wash (liters) of hot and cold water consumption, same basic TUF label (one of them has

cycle. Verify the wash water temperature, Vh, and Vci, measured at maximum fill level its water temperature controlled by

which must be at a minimum of 140'F for each wash/rinse TUF combination setting thermostatically controlled valves and

(60.0°C) and a maximum of 145°F (62.80C). in section 3.2.1.2, excluding any fresh make- the other one does not), thenthe higher

If the measured water temperature is not up water required to complete the fill during of the two Vi's shall be used for the

within the specified range, stop testing, a suds-return cycle. calculation.)

adjust the temperature selector accordingly 3.4.1.3 Record the Individual gallons TUFI - applicable temperature use factor in

and repeat the procedure. Otherwise, proceed (liters) of hot and cold water consumption, section 5 or 6.

EE-RM-94-230 COMMENT 49L

15360 Federal Register' / VoL 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 

Faucet pOsition 

Hot va/ve 

Warm ............ . Completely 

open. 

Cold .. :............ Closed ........ . 

Cold valve 

Completely 

open. 

Completely 

. open. 

3.2: 1.2.7 Set the suds-sawr switch to 

. activate the suds-return. Repeat sectionS 

3.2.1.2.3 to 3.2.1.2.5 for a Warm/Cold 

temperature sett1Jlg; . 

3.2.1.3 Hot and cold water Consumption 

with the water level selector at minimum flll. 

Set the.water level selector at minimum ftll 

and insert the appropriate test load. Activate 

the normal cycle of the clothes washer and 

also any suds:.saver switch. Repeat sections 

3.2.1.2.2 through 3.2.1.2.7. 

3.2.1.4 Hot and cold water consumption 

for clothes washers that Incorporate a partial 

flll dur1ng the rinse cycle. When sections . 

3.2.1.2 and 3~2.1.3 cannot be .used for clothes 

washers that InCorporate a partial ftll during 

the rinse cycle. activate any suds-saver ' 

switch and operate the clothes washer for the 

complete norinal cycle at both the maximum 

water fill level and the minimum water f1ll 

level for each of the wash/rinse temperature 

selections available. Measure the respective 

hot and cold1water consumed during the 

complete normal cycle. 

3.2.2 Water-heattns clothes washers. For 

wafer-heating clothes washers the following 

temperature settings will be tested: hottest 

setting available on the machine. hot (a 

minlmumof 1400F (SO.OOC) and a maximum 

of 145°F (S2.S0C». warm (a minimum of 

100°F (37.S0C) and a maximum of 105°F 

(40.SoC». and coldest setting available on the 

machine. These temperature must be 

conftrined by measurement using a 

temperature sensing device. 

3.2.2.1 Per-cycle electrical energy 

consumption atmaidinum,flll. Set the water 

level selector at maximum ftll available on . 

the clothes washer. if manually controlled. 

3.2.2.1.1 Hottest wash at maximum flll. 

Activate .. the machine .and insert the 

appropriate test load. if applicable. Select the 

normal or its equivalent wash cycle. Where 

spin speed selection 15 available. set the 

,control to its maximum setting. Set the water 

temperature selector to the hottest setting and 

activate the wash cycle. Measure and record 

the kilowatt-hours of electrical energy 

consumed for the complete cycle as ~. 

3.2.2.1.2 Hot wash at maximum fill. 

Insert a water temperature sensing device 

inside themner drum prior to testing. 

Activate the machine and Insert the 

appropriate test load. If applicable. Select the 

normal or its equivalent wash cycle. Where 

spin speed selection 15 available. set the 

control to its maximum setting. Set the water . 

temperature selector to the hot setting (a 

minimum of 140"F (SO.O°C) and a maximum 

of 145°F (S2.S0C» and activate the wash 

cycle. Verify the wash watertemperature. 

which must be at a m1n1mum of 1400F 

(50.0°C) and a maximum of 145°F (S2.SoC). 

If the measured water temperature is not 

within the spec1fted range. stop testing. I 

. adjust the temperature selector accordingly 

and repeat the procedure. Otherwise. pipCeed 

and complete testing. Measure and retord the 

kilowatt~hours of electrical energy consumed 

for the complete cycle as Et,,-. 

3.2.2.1.3 Wann wash at niaximum fill 

Repeat section 3.2.2.1.2 for a warm wash 

setting at a minimJJIIi oflOO°F (37.S0C) and 

a maximum of 105°F (40.S°C). Measure and' 

record the kilowatt-hours. of electrical energy 

consumed for the complete cycle as E.......". 

3.2.2.1.4 Cold wash at maximum 00. . 

Repeat section 3.2.2.1.1 for the coldest water 

setting. Measure and record the kilowatthours of electrical energy conSumed for the 

complete cycle, as E., ........ Ensuret,hat the inlet 

water temperature is maintained per,section ~3.· . 

3.2.2.2 Per-cyelE; water consumption at 

maximum 00 .. Measure the total number of 

gaIlons (liters) of water used in sections 

3.2.2.1.1.3.2.2.1.2.3.2.2.1.3. and 3.2.2.1.4. 

including all wash. deep rinse. and spray 

rinse cycles as V_, V~. Vw_. and V __ . . 

3.2.2.3 Per-cycle electrical energy 

consumption at minimum flll. Set the water 

.level selector to the minimum ftll pos.ition. ifman~ycori~lled. . 

3.2.2.3.1 Hottestwash at minimum 00. 

Repeat section 3.2.2.1.1. Measure and record 

the kilowatt-hours of electrical energy 

consumed for the complete cycle as Ebt,miA. 

3.2.2.3.2 Hot wash at minimum 00. 

Repeat section 3.2.2.1 ;2. )be hot wash setting 

shall be at a minimum of 140°F (SO.O°C) and 

a maximum of 145°F (S2.S°C). Measure and 

record the kilowatt-hours of electrical energy 

consumed for the complete cycle as &..m.m. . 3.2.2.3.3 Wann wash at minimum fill. . 

Repeat section 3.2.2.1,2 for warm wash 

setting at a minimum of 100°F (37.S0C) and 

a maximum of 105°F (40.S0C). Measure and 

record the kilowatt-hours of electrical ener&y 

consumed for the complete cycle as E..,miD. 

3.2.2.3.4 Cold wash at mlnJmum ml. . Repeat section 3.2.2.1.1 for the coldest wash 

setting. Measure and record the kilowatthours of electrical energy consumed for the 

complete cycle as E.,,miD. EnSure that the inlet 

water temperature 15 mainta1ried per section 

2.3. 

3.2.2.4 Per-cycle water consumption at 

minimum flll. Measure the total number of 

gallons (liters) of water used in sections 

3.2.2.3.1.3.2.2.3.2.3.2.2.3.3. and 3.2.2.3.4. 

including all wash, deep rinse. and spray 

rinse cycles. 

3.3 Moisture content of test load. Weigh 

the test loads after completion of test cycles 

in warm wash/cold rinse or cold wash/cold 

. rinse temperature setting for both maximum 

and minimum water ftlls. . 

3.4 Data recording. Record for each test 

cycle 10 sections 3.2.1 through 3.3. 

3.4.1 Nonwater-heattns clothes washers, 

3.4:1.1 Record the kiloWatt-hourS of 

electrical ener&y. Ms. consumed during the 

test to operate the clothes wcisher in section 

3.2.l:I. 

3.4.1.2 Record the individual gallons 

. (liters) of hot and cold water consumption. 

Vhl and VCI. measured at maximum fill level 

for each wash/rinse TUF combination setting 

In section 3.2; 1.2. exChlding any fresh makeup water required to complete the ftII during a suds-return cycle. . 

.. 3.4.L3 Record the Individual gallons 

(liters) of hot and 'cold water consumption. 

Vhj and VCj. measured at m1n1mum ftllievel 

for each wash/rinse TUF combination setting 

in sectiori 3.2:1.3. excluding any fresh makeup water required to complete the ftll duririg a suds-return cycle. . 

3.4.1.4 Record the individual gallons. 

(liters) of hot and cold watel'.ShH and SC}{. 

measured at maximum ftll for the suds-return 

cycle. 

3.4.1.5 Record the individual gallons 

(liters) ofho~ and cold water. Silt. and ScL 

measured at minimum fill for the suds-return 

cycle. 

3,4.2 Water-heattns clothes washers. 

3,4.2; I Record the kilowatt-hours of 

electrical ener&y E.m-. ~.F.,,;;..,.. and 

E."...a consumed at maximum nn level for 

each washlrinseTUF combination setting in 

sections 3.2.2.1.1.3.2.2.1.2.3.2.2:1.3. iIJld 

3.2.2.1,4. reSpectively. . 

3,4.2.~. Record the total gallons (liters) of 

water consumption. V_, V .......... Vw-.. and 

Vo ........ measured at maximum ffillevel for 

each washlrinse TUF combination setting in 

.section 3.2.2.2. 'i -

3.4.2.3 Record the kilowatt-hours of 

electrical ener&y. ~. F.t"..w.. E..,miD. and 

E.,,mIa consumed at m1n1mum fW level for 

each wash/rinse.TUF combination setting in 

section 3.2.2.3.1.3.2.2.3.2.3.2.2.3.3. and 

3.2.2.3.4. respeCtively. 

3.4~2.4 Record the total gallons (liters) of 

water consumption. V-.;; Vb,miD.'vw,miD. and , 

Vo,miD. measured at minimum ftllievel for 

each washlrinse TUF combination setting in 

section 3.2.2.4. 

3.4.3 Record the weight of the test loads; 

W_ and WmiA. after completion of test 

cycles in section 3.3. 

4. Calculation of Derived Results From Test 

Measurements . 

4.1 Energy consumption.. . 4.1.1 Nonwater-heattng clothes washers. 

4.1.1.1 Per-cycle temperature-weighted 

hot water consumption for maximum and 

minimum water fllllevels. Calculate for the 

cycle under test the per-cycle teniperature 

weighted hot water consumption for the 

. maximum water ftllievel. Vhm.. and for the 

minimum water ftllievel. Vh..w.. expressed in . gallons per cycle (liters per cycle) and 

defined as: . . 

n 

Vhmax = X1L[Vhi x TUFd+ 

i=l 

-Where: 

, Vb; = reported hot water consumption in 

gallons per cycle (liters per cycle) at 

maximum fWfor each wash/cycle TUF 

combination setting. as provided 10 ' 

section 3.4.1.2. (If. a clothes washer 15 

equipped with two different wash/rinse . temperature selections that ruive the . 

same basic TUF label (one of them has 

its water temperature controlled by 

. thermostatically controlled valves and 

the other one does not). thenthe higher 

of the two VI'S shall be usee! for the 

calculation.) .. 

TUFI = applicable temperature use factor in 

section 5 or S. 

. , 
Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15361

n= number of wash/rinse TUF combination r l / n =number of wash/rinse TUF combination Emin [Vhmin x T x K x MF] Emin (0.05 x Ehtrain)+(0.25 x Eh mi.) setting available to the user for the x M E =0.0 x ,0.25 xE

clothes washer under test. Where:

TUF, = temperature use factor for warm T as defined above. +(0.55x E,i))+(0.15 x E,m,)

wash setting. K = as defined above.

For clothes washers equipped with the V = as dened n section 4.Where: Vhm. = as defined in section 4.1.1.1.

suds-saver feature: MF = as defined in section 4.1.1.2. Ehtn, = as defined in section 3.2.2.1.1

XI = frequency of use without the suds-saver 4.1.1.3 Total weightedper-cycle hot water Elm, - as defined in section 3.2.2.1.2

feature - 0.86.energy consumption expressed in kilowatt- E = as defined in section 3.2.2.1.3

X2 - frequency of use with the suds-saver hours. Calculate the total weighted per cycle Ec. = as defined in section 3.2.2.1.4

feature - 0.14. hot water energy consumption, ET, expressed E&tan = as defined in section 3.2.2.3.1

ShH - fresh make-up water measured during in kilowatt-hours per cycle and defined as: E = as defined in section 3.2.2.3.2

suds-return cycle at maximum water fill EEwmn = as defined in section 3.2.2.3.3

level. E =[E x F. 1+E x F.-1 E,,i= as defined in section 3.2.2.3.4

For clothes washers not equipped with the T mx xj i mi4.1.2.2 Total weighted per-cycle energy

suds-saver feature: Where: consumption expressed in kilowatt-hours.

Fn=usage fill factor=0.72 Calculate the total weighted per cycle energy

X1 = 1.0 F>,u=usage fill factor=0.28 consumption, ET, expressed in kilowatt-

.0E,,E=as defined in section 4: 1.1.2. hours per cycle and defined as: X2 = 0.0 Em,,=as defined in section 4.1.1.2.

and 4.1.1.4 Per-cycle machine electrical ET =[Emx x Fx]+[Emin x Fmin]

energy consumption. The value recorded In Wherenhr TU~section .XC[Vh, * 3.4.1.1 is the per-cycle machine

InTkilowatt-hours per cycle. F~ = as defined in section 4.1.1.3. Vh Xi=1~~~~~~~E.F.,i = as defined in section 4.1.2.1.3.

Vhmi =X VhjxTUFj+ electricalenergyconsumption, ME, expressed F13

i=1 in kilowatt-hours per cycle.*E.- asd ®ndi se c t .1

4.1.1.5 Per-cycle water energy E =asdenedinsection 4121

consumption using gas-heated or oil-heated

X2 [TUFwxShL] water. Calculate for the normal cycle the per- 4.2 Per-cycle energyconsumptionfor

Where: cycle water consumption, ETO, using gas removal of moisture from test load Calculate

wVhj reported hot water consumption In heated or oil-heated water, expressed in BTU the per-cycle energy required to remove the Vhj = reported hot water consumption in moisture of the test load, moisture removal

gallons per cycle (liters per cycle) at per cycle (megaoulesper cycle) and definedest load, mosture removal

minimum fill for each wash/rinse TUF a: energy, Hv expressed kilowatt-hours per cycle and defined as: combination setting, as provided in

section 3.4.1.3. (If a clothes washer is1 3412 BTU

equipped with two different wash/rinse ETG = ET X - H = (W2 Wl) DEF

temperature selections that have the e kWh Where:

same basic TUF label (one of them has

its water temperature controlled by - - W2 - Weighted test load after normal cycles,

thermostatically controlled valves and 1 3.6 MJ in lbs (kg).

the other one does not), then the higher TG T - = [(W xFJ+ (WnxFJ)I.

of the two Vi's shall be used for the e JW = as defined in section 3.4.3.

calculation.) Where: Wim = as defined in section 3.4.3.

TUFj = applicable temperature use factor in e = nominal gas or oil water heater Fn = as defined in section 4.1.1.3.

section 5 or 6. effciency=0.75. Fmn = as defined in section 4.1.1.3.

ShL = fresh hot make-up water measured ET = as defined in section 4.1.1.3. W1 = weighted reference weight (bone dry) of

during suds-return cycle at minimum test load.

water fill level.4.1.1.6 otalper-cycle energy= 5.88 Ibs (2.42 kg) for standard size n = as defined above. consumption when electrically heated water clothes washers.

TUFw = as defined above. is used Calculate for the normal cycle the = 3 Ibs (1.36 kg) for compact size clothes

XI = as defined above. total per-cycle energy consumption, ETE, washers.

X2 = as defined above. using electrically heated water, expressed in = nominal energy required for a clothes

4.1.1.2 Totalper-cycle hotwaterenergy kilowatt-hours per cycle and defined as: dryer to remove moisture from clothes,

consumption for maximum and minimum ETE=ET+ME 0.5 kWhlbs (1.1 kWh/kg).

water fill levels. Calculate the total per-cycle Where: 4.3 Water consumption.

hot water energy consumption for the ET = as defined in section 4.1.1.3 4.3.1 Nonwater-heating clothes washers.

maximum water fill level, Em and for the ME = as defined in section 4.1.1.4. 4.3.1.1 Per-cycle temperature-weighted

minimum water level, Emin, expressed in 4.1.2 Water-heating clothes washers. water consumption for maximum and

kilowatt-hours per cycle and defined as: 4.1.2.1 Per-cycle temperature-weighted minimum water fill levels. Calculate for the

energy consumption for maximum and cycle under test the per-cycle temperatureE mx = [Vhmx xT x K xMF] minimum water fill levels. Calculate for the weighted total water consumption for the

cycle under test the per-cycle temperature maximum water fill level, QO., and for the Where: weighted energy consumption for the minimum water fill level, Qn, expressed in

T = temperature rise = 90°F (50°C). maximum water fill level, E.,, and for the gallons per cycle (liters per cycle) and

K = water specific heat = 0.00240 kWh/ minimum water fill level, E., expressed in defined as: (gal.-F) [0.00114kWh/(L.C)]. kilowatt-hours per cycle and defined as: VhI~ = as defined in section 4.1.1.1.

MF - multiplying factor to account for \ = [(vhi +Vcj)x TUF]

absence of test load=0.94 for top-loader Em =(005 . XE ht,m)+ (0 2 5 x Eh,ma) Vi)

vertical axis clothes washers that are sensor wsensor hied, filled, 1.0 1.0 for for all other ar other clothes clothes + (0.55 x Ewax )+ (0.15 x Ecm t i x V ) + X2 [TUFw x (ShH +SCH) ]

and: and, Where:

EE-RM-94-230 COMMENT 49L

Federal Register I Vol. 60, No. 56 I Thursday, March 23, 1995 I Proposed Rules 15361 

n = number of wash/rinse TUF combination 

setting avallableto the user for the 

clothes washer under test. 

TUF .... temperature use factor for warm 

wash setting. 

For clothes washers equipped with the 

suds-saver feature: 

XI = frequency of use without the suds-saver 

feature" 0.86. 

X2 .. frequency of use with the suds-saver 

feature .. 0.14. 

ShH .. fresh make-up water measured during 

suds-return cycle at maximum water fill 

level. 

For clothes washers not equipped with the 

suds-saver feature: . 

and 

n 

Vhmin = X1L[Vhj x TUFj ]+ 

j=1 

Where: 

Vhj = reported hot water consumption in 

gallons per cycle (liters per cycle) at 

minimum ffil for each wash/rinse TUF 

combination setting, as provided in 

section 3.4.1.3. (If a clothes washer is 

equipped with two different wash/rinse 

temperature selections that have the 

same basic TUF label (one of them has 

its water temperature controlled by 

thermostatically controlled valves and 

the other one does not). then the higher 

of the two Vj's shall be used for the 

calculation.) 

TUFj = applicable temperature use factor in 

section 5 or 6. 

ShL = fresh hot make-up water measured 

during suds-return cycle at minimum 

water fill level. 

n = as defined above. 

TUFw "" as defined above. 

X I = as defined above. 

X2 = as defined above. 

4.1.1.2 Total per-cycle hot water energy . 

consumption for maximum and minimum 

water mllevels. Calculate the total per-cycle 

hot water energy consumption for the 

maximum water fill level. E""", and for the 

minimum water level. E..w.. expressed in 

kilowatt-hours per cycle and defined as: 

Emax =[Vhmax x TxKxMF] 

Where: 

T = temperature rise .. 90°F (50°C). 

K .. water specific heat .. 0.00240 kWh/ 

(gal.0F) [0.00114 kWhl(VC)). 

Vhmu" as defined in section 4.1.1.1. 

MF .. mUltiplying factor to account for 

absence of test load=O.94 for top-loader 

vertical axis clothes washers that are 

sensor filled. 1.0 for all other clothes 

washers 

and: 

Emin = [Vhmin x T x Kx MF] 

Where: 

T .. as defined above. 

K .. as defined above. 

Vhmm .. as defined in section 4.1.1.1. 

MF .. as defined in section 4.1.1.2. 

4.1.1.3 Total weighted per-cycle hot water 

energy consumption expressed in ldlowatthours. CalcUlate the total weighted per cycle 

hot water energy consumption. ET.expressed 

in kilowatt-hours per cycle and defined as: 

ET = [Emax x Fmax]+[Emin x Fmin ] 

Where: 

F_=usage fill factor=O.72 

Fmia=usage fillfactor=O.28 

E_=as defined in section 4,1.1. 2. 

Emu,=as defined in section 4.1.1.2. 

4.1.1.4 Per-cycle machine electrical 

energy consumption. The value recorded in 

section 3.4.1.1 is the per-cycle machine 

electrical energy consumption. ME. expressed 

in kilowatt-how's per cycle. 

4.1.1.5 Per-cycle water energy 

consumption using gas-heated or oil-heated 

water. Calculate for the normal cycle the percycle water consumption. ETO• using gas 

heated or oil-heated water. expressed in BTU 

per cycle (mega joules per cycle) and defined 

as: 

E - E 1 [3412 BTU] TG- TX-x 

e kWh 

1 [3.6 MJ] orETG =ET x-x --- . e kWh 

Where: 

e = nominal gas or oil water heater 

efficiency=O.75. 

ET = as defined in section 4.1.1.3. 

4.1.1.6 Total per-cycle energy 

consumption when electrically heated water 

is used. Calculate for the normal cycle the 

total per-cycle energy consumption. ETE• 

using electrically heated water. expressed in 

kilowatt-hours per cycle and defined as: 

ETE=ET+ME 

Where: 

ET = as defined in section 4.1.1.3 

. ME = as defined 1n section 4.1.1.4. 

4.1.2 Water-heating clothes washers. 

4.1.2.1 Per-cycle temperature-weighted 

energy consumption for maximum and 

minimum water nn levels. Calculate for the 

cycle under test the per-cycle temperature 

weighted energy consumption for the 

. maximum water ffillevel. E....... and for the 

minimum water fill level. E..w.. expressed in 

kilowatt-hours per cycle and defined as: 

Emax = (0.05 x Eht.max )+(0.25 x Eh•max ) 

+ (0.55 x Ew.max) + (0.15 x Ec.max) 

and. 

Emin = (0.05 x Eht.min)+( 0.25 x Eh•min ) 

+( 0.55 X Ew.min )+( 0.151XEc.min) 

Where: 

&.t,awt = as defined in section 3.2.2.1.1 

Eb,max" as defined in section 3.2.2.1.2 

E..,awt = as defined in section 3.2.2.1.3 

Ec_ = as defined in section 3.2.2.1.4 

Ebt,min = as defined in section 3.2.2.3.1 

Eh,min" as defined in section 3.2.2.3.2 

E..,min .. as defined in section 3.2.2.3.3 

Ec,mia = as defined in section 3.2.2.3.4 

4.1.2.2 Total weighted per-cycle energy 

consumption expressed in kilowatt-hours. 

Calculate the total weighted per cycle energy 

consumption. ET. expressed in kilowatt-' 

hours per cycle and defined as: 

ET =[Emax x Fmax]+[Emin xFmin ] 

Where: 

F""", .. as defined in section 4.1.1.3. 

Fmia = as defined in section 4.1.1.3. 

E...... .. as defined in section 4.1.2.'1. 

Emia .. as defined in sec.tion 4.1.2.1 

4.2 Per-cycle energy consumption for 

removal of moisture from test load. Calculate 

the per-cycle energy required to remove the 

moisture of the test load. moisture removal 

energy. Hv. expressed in kilowatt-hours per 

cycle and defined as: 

Where: 

W2 = Weighted test load after normal cycles. 

in Ibs (kg). 

= [(W..,.,.xF..,.J+(WmiaxF..w.)). 

W""", .. as defined in section 3.4.3. 

Wmia = as defined in section 3.4.3. 

Fmu = as defined in section 4.1.1.3. 

Fmia = as defined in section 4.1.1.3. 

WI" weighted reference weight (bone dry) of 

test load. 

= 5.88 Ibs (2.42 kg) for standard size 

clothes washers. 

.. 31bs (1.36 kg) for compact size clothes 

washers. 

DEF = nominal energy required for a clothes 

dryer to remove moisture from clothes. 

0.5 kWhlIbs (1.1 kWh/kg). 

4.3 Water consumption. 

4.3.1 Nonwater-heating clothes washers. 

4.3.1.1 Per-cycle temperature-weighted 

water consumption for maximum and 

minimum water mllevels. Calculate for the 

cycle under test the per-cycle temperatureweighted total water consumption for the 

maximum water fillleveI. Q....,.. and for the 

minimum water fill level. Q...;... expressed in 

gallons per cycle (liters per cycle) and 

defined as: 

D 

Qmax = X1L[(Vhi + VCi)xTUFd 

i=1 

Where: 
15362 Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules

Vhi - hot water consumption in gallons per ' Qu - as defined in section 4.3.1.1. 4.4.2 Water-heating clothes washers.

cycle at maximum fill for each wash/ Q = as defined in section 4.3.1.1. Calculate the modified energy factor, MEF,

rinse TUF combination setting, as 4.3.2 Water-heating othes washers. expressed in cubic feet per kilowatt-hours

provided in section 3.4.1.2. 4.3.2.1 Per-cye temperature-weighted per cycle (liters per kilowatt-hours per cycle),

Vci cold water consumption in gallons per- water consumption for maximum and as: cycle at maximum fill for each wash/ minimum water fill levels. Calculate for the rinse rinse TUF TUF combination setting, combination setng, as s C cycle under test the per-cycle temperature MEF provided in section 3.4.1.2. weighted total water consumption for the E +H

TUFi - applicable temperature use factor in maximum water fll level, Qu. and for the T v)

nmsection 5 wsor ie T cm6.b ia minimum water fill;level, QO,,. expressed in Where: n - 1 number of wash/rinse TUF ombination gallons per cycle (liters per cycle) and C = as defined in section 3.1.1 or 3.1.2.

settings available to the user for the defined as: ET as defined in section 4.1.2.2.

dlothes clothes washerr under test. test. e aEHv- as defined in section 4.2.

TUF - temperature use factor for warmHv as dened n section 4.2.

wash setting.max = (0.5 x Vt, ) + (025 x Vbhx) 5. Applicable Temperature Use Factors for

For clothes washers equipped with suds- v + Determining Hot Water Usage for Various

saver feature: + , 5 5 x V wrm)x 0.15 x cnma)WashIRinse Temperature Selections for Al

X = frequency of use without suds-saver and,utomatc Clothes Washers

feature-0.86 5.1 Five-temperature selection (n-5).

X2 frequency of use with suds-saver t. x TeInperaure feature-0.14 Qmi = x0.05 +2 x Vht Wash/inse temperaturer

ShH - fresh hot water make-up measured+ 5 setting UF)aor

during suds-return cycle at maximum\ (0.55 Vm )+ _________(____) (

TU F)

water fill level. Where: water-fill level. 'Where: Hot/Warmn ............................. 0.18

SCH - fresh cold water make-up measured VitaV, = as defined in section 3.2.2.2. Hot/Cold ............................... .12 during suds-return cycle at maximum V as defned in section 3.2.2.2.WamWar ......... .30

water fill level.» V ,. as defined in section 3.2.2.2. Warm/Cold ........................... .25

For clothes washers not equipped with V - as defined in section 3.2.2.2. Cold/Cold .............................. 15

suds-saver feature: V nin as defined in section 3.2.2.4.

VI,.i - as defined in section 3.2.2.4. 5.2 Four-temperature selection (n-4).

X = 1.0 V,,,, as defined in section 3.2.2.4.

X2 = 0.0 V ,, as defined in section 3.2.2.4. Washrinse temperature Temperar

and 4.3.2.2 Total weighted per-cycle water setting (TUF) consumption. Calculate the total weighted

Dn , per cycle water consumption, QT, expressed Alternate I:

Q D =X 1 [Vh. +Vc) X TUF. in gallons per cycle (liters per cycle) and Hot/Warm .......................... 0.18 _m i nl'\ = X 1 s) J definedas: HotCold .12

-J lWarm/Cold ...................... .55

QT=[Qma x Fmax[+[Qmiax F '...] Cold/Cold .......................... .15 QT =l Xia[XNFm Dteate1:+[min1 +X[TUF x (Sh +S cL)] Alteate II: +X[TUFV x^ShL+SL~j w~here: Hot/Warm .......................... 0.18

Where: F, - as defined in section 4.1.1.3. Hot/Cold ............................. 12

Vhj hot water consumption ingallons per F as defined in section 4.1.1.3.WarmWm ...................... .30

cycle (liters per cycle) at minimum fill Qa = as defined In section 4.3.2.1. Warm/Cold .................... .40

for each wash/rinse TUF combination Q = as defined in section 4.3.2.1. Alterate Ill:

setting, as provided in section 3.4.1.3. 4.3.3 Water consumption factor. Warm/Warm wal ................ 18 ...................... 0 182 Vcj - cold water consumption in gallons per Calculate the water consumption factor,Wr o cycle (liters per ycle) at minimum fill WCF, expressed in cubic feet per gallon per W Cold ........... .55

for each wash/rinse TUF combination cycle (liter per liter per cycle), as:..........................

setting, as provided in section 3.4.1.3. C 5.3 Three-temperature selection (n=3). TUFj = applicable temperature use factor in . W' C

section 5 or 6. , W, at

ShL - fresh hot and cold make-up water QT Wash/rinse temperature useactor

measured during suds-return cycle at Where: setting (TUF)

minimum water fill level. C - as defined in section 3.1.1 or 3.1.2.-

SCL = fresh hot and cold make-up water T = as defined in section 4.3.1.2 forAltemate I:

measured during suds-return cycle at nonwater-heating clothes washers. Hot/Warm ......................... 0.30

minimum water fill level. Warm/Cold ....................... .55

n = as defined in section 4.3.1.1. 4.4 Modfedenergyfactor. Cold/Cold .......................... 15

TUF, = as defined in section 4.3.1.1. 4.4.1 Nonwater-heating clothes washers. Altemate II:

X as defined in section 4.3.1.1. Calculate the modified energy factor MEF, HotCold .......................... 0.30

X2 - as defined in section 4.3.1.1. expressed in cubic feet per kilowatt-hours Warm/Cold ....................... .55

4.3.1.2 weighd Total p e w r per cycle (liters per kilowatt-hours per cycle), Cold/Cold ................. .15 4.3.1.2 Totalweighted per-cycle water as: ........................ consumption. Calculate the total weighted as: AHemat 11

per cycle water consumption, QT, expressed C Wam a ................... . in gallons per cycle liters per cycle) and MEF = l/ . defined defined as: as (ME (ME+ET +ET +HV) +Hv) Cold/Cold ......................... .15

Q _ n[Qm XFw. 1]+ [Q X Fi. 1 Where: 6. Applicable Temperature Use Factors for QT [ x JL* C - asdeflned i 3.1.1 or 3.1.2. Determining Hot Water Usage for Various C .- as defined In section 3.1.1 or 3.1.2.

Where: ME as defined in section 4.1.1.4.Wash1inse TeiperatureSettingsfor AI

F. = as defined in section 4.1.1.3 ET as defined in section 4.1.1.3.Sem-Automatic Clothes Washers

F" - as defined in section 4.1.1.3. Hv - as defined in section 4.2. 6.1 Six-temperature settings (n=6).

EE-RM-94-230 COMMENT 49L

15362 Federal Register' / Vol. ·60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 

Vhi ... hot water consumption in gallons per,-

cycle at ~um.ftll for each washl . 

. rinse TUF combination setting. as 

provided in section 3.4.,.2 .. 

VCI" cold water consumption in gallons percycle at maximum ftll for each washl 

rInse TUF combination Setting •. ~ 

provided in section 3.4.1.2. 

TUFi - appUcable temperature use factor in 

section 5 or 6 .. 

n ... number of wash/rinse TUF combtnation 

settings available to the user for the 

clothes washer under test. 

TUF.., ... temperature use factor for warm 

wash setting. 

For clothes washers equipped with sudssaver feature: ," 

XI ... frequency of use without suds-saver 

feature-O.86 

X2 ... frequency of use with suds-saver 

featureaO.14 

ShH ... fres/1 hot water make-up measured 

during suds-return cycle at maximum 

waterftlllevel. 

~ ... fresh cold water make-up measured 

during suds-return cycle.at maximum 

water ftlllevel. 

For clothes washers not equipped with 

suds-saver feature: . 

and 

QmiD ::::Xt± [(Vhj+VCj)XTUFj] . let 

Where: 

Vhj .. hot water consumption in" gallons per 

cycle (Uters per cycle) at minimum ftll ' 

for each wash/rinse TUF combination 

setting. as provided in section 3.4.1.3. 

VCj - cold water consumption in gallons per 

cycle (Uters per cycle) at minimumftll 

for each washlrinse TUF combination 

setting. as provided in section 3.4.1.3. 

TUFj .. appUcable temperature use factor in 

section 5 or 6. 

ShL .. fresh hot and cold make-up water 

measured during suds-return cycle at 

intn1mum water ftlllevel. 

~ .,; fresh hot and cold make-up. water 

measured during suds-return cycle at 

minimum water mllevel. 

n .. as denDed in section 4.3.1.1. 

TuF .... as defined insectiori 4.3.1.1. 

XI co as defined in section 4.3.1.1. 

X2 .. as defined in section 4.3.1. 1. 

4.3.1.2 Total welght¢ per-cycle water 

consumption. Calculate the total weighted 

per cycle water consumption. Qr. expressed 

in gallons per cycle (l1tersper cycle) and 

defined as: . . 

QT == [Qmax x Fmax] + {QmiD x FmiD] 

Where: 

F_ ... as def1ried in section 4.1.1.3. 

F;'" - as defined' in seCtion 4.1.1.3. 

'Q..,.,. .. as defined in section 4.3.1.1. 

Q..w. -as defined in section 4.3.1.1. 

4.3.2 Water~heat1ng clothes washers. 

4.3.2.1 . Per-cycle temperature-weighted 

water consumption for maximum and 

m1n1mum water nn levels. Calculate for the 

cycle under test the per-cycle temperature . 

weighted, total water consumption for the 

maximum water ftlllevel. <2-. and for the 

minimum Water ftll;level. Q..w.; expressed in 

gallons per cycle (Uters per cycle) and 

defined as: 

Qmax = (0.05 X Vbt•

max )+ (0.25 X Vh•

max) 

+(055 X VW ,11JIIX )+(0.15 XVc,max) 

and. 

QmiD = (0.05 x Vbt•miD )+( 0.25 x Vh,miD) 

+(0.55 x VW •miD ) + (0.15 x Vc•miD ) 

'Where: 

Vht,aiu .. as defined in section 3.2.2.2; 

Vb,mu .. as defined in section 3.2.2.2. 

V..,_ ... as defined in section 3.2.2.2. 

. V~ .. as defined in section 3;2.2.2. 

VJtt.mm" as defined in section 3.2.2.4. 

Vb,miD .. as defined in section 3.2.2.4. 

V .. ,miD. ... as defined in section 3.2.2.4. 

V c,miD ... as defined in section 3.2.2.4. 

4.3.2.2 Total weighted per-cycle water 

consumption. Calculate the total weighted 

per cycle water consumption. QT. expressed 

in gallons per cycle (liters per cycle) and 

defined as: 

Qr = [Qmax X F 11JIIX]+ [QmiDx FmiD ] 

Where: 

F_ - as defined in section ~.1.1.3. 

FmiD'" as defined in section 4.1.1.3. 

Q..,.,. .. as defined in section 4.3.2.1. 

Q..w. - as defined in section 4.3.2.1: 

4.3.3 Water consumption factor. I 

Calculate the water consumption factor. 

WCF. expressed in cubic feet per gallon per 

cycle (liter per Utet per cycle). as: 

Where: 

c WCF=-

Qr 

C .. as defined in section 3.1.1 or 3.1.2. 

. QT" as defined in section 4.3.1.2 for . nonwater-heating clothes washers. 

4.4 Modlfled energy factor. 

4.4.1 Nonwater-heating clothes washers. 

Calculate the modified energy factor. MEF. 

expreSsed in cubic feet per kllowatt-hours 

per cycle (Uters ~r kllowatt-hours per cycle). 

as: 

Where: 

C ... as defined in section 3.1.1 or 3.1.2. 

MB ;" as defined in section 4.1.1.4. 

ET ... as defined in section 4.1.1.3. 

Hv'" as defined in section 4.2. 

4.4.2 Water-heating clothes washers. 

Calculate the mod1ftecJ energy factor. MEF. 

expressed in cubic feet per kilowatt-hours 

per cycle (Uters per kilowatt-hours per cycle). . as: '. . 

C MEF=~-'-":", 

(Er+Hv) 

Where: 

C ... as defined in section 3.l.1or.3.1.2. 

ET" as defined in section 4.1.2.2. 

Hv ';' as defined in section 4.2. 

5. Applicable Temperature Use Factors for 

Detenn1n1ng Hot Water Usase forVartous . . WashlRinse Temperature Selections for An 

Automatic Clothe,s W~ers 

S.l Five-temperature selection (n-:5). 

Wash/rinse temperature 

setting 

HotIWartn ......... ~ ................... .. 

Hot/Cold .............................. .. WarmNoIarm ......................... . 

··Warm/Cold ........................... . Cold/Cold ............................. . 

Teinperature 

use factor . (TUF) 

0.18 

.12 

.30 

.25 

.15 

.5.2 Four-temperature selection (n",,4). 

Washlrinse tempendure 

setting 

Alternate I: .. 

HotlWann ......................... .. Hot/Cold .......................... .. 

Warm/Cold .......... : ........... .. Cold/Cold .......................... . . Altemate II: 

HotlWann ....... , ................ .. 

Hot/Cold .......................... .. WarmNoIarm .................... .. 

Warm/Cold ...................... .. Altemate III: 

Hot/Cold ......... ~ ................ .. WarmNoIann .................... .. 

W8rrnJCold ........................ . Cold/Cold ........... ~ ............ .. 

Temperature 

use factor 

(TUF) 

0.18 

.12 

.55 

.15 

0.18 

.12 

.30 

.40 

0.12 

.18 

.55 

.15 

5.3. Three-temperature selection (n=3). 

Wash/rinse temperature 

setting 

. Alternate I: 

HotIWarm ........................ .. Warm/Cold ...................... .. Cold/Cold ........................ .. Altemate II: 

Hot/Cold ........................... ; 

Warm/Cold ...................... .. Cold/Cold ................ : .... ; .. .. Alternate III: 

Hot/Cold ........................... .. WarrnlWarm .................... .. Cold/Cold ... ; .................... .. 

Temperature 

. use factor 

(TUF) 

0.30 

.55 

.15 

0.30 

.55 

.15 

0.30 . 

;55 

.15 

6. Applicable Temperature Use Factors for· 

Determ1nJngHot Water Usase for Various 

WashlRlnse Temperature Settings for An 

Semi-Automatic Clothes Washers 

6.1 . Six-temperature settJnss (n.,6). 
' ' " Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15363

Wash/rinse temperature Tmpe use factor setting TUF)

HoHot ........ . ........... .15

Hot/W arm .............................. .09

Hot/Cold ................................ .06

Warm/Warm .......................... .42

W arm/Cold ........................... .13

Cold/Cold .............................. .15

§430.62 [Amended]

7. Section 430.62 (a)(2) is amended by

adding "energy factor (for clothes washers,

clothes dryers, and dishwashers)" after "(for

pool heaters)," and before "and annual fuel

utilization efficiency".

[FR Doc. 95-4048 Filed 3-22-95; 8:45 am]

BILLNG CODE 645-0-P

EE-RM-94-230 COMMENT 49L .. .. Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 

Wash/rinse temperature 

setting 

Hot/Hot ................................. . 

Hot/Warm ............................. . 

Hot/Cold .... : ................ , ......... . 

WarmlWarm ......................... . 

Warm/Cold ........................... . 

Cold/Cold ............................. . 

5430.62 [Amended] 

Temperature 

use factor 

(TUF) 

.15 

.09 

.06 

.42 

.13 

.15 

7. Section 430.62 (a)(2) is amended by 

adding "energy factor (for clothes washers. 

clothes dryers, and dishwashers)" after "(for 

pool heaters)," and before "and annual fuel 

utilization effiCiency". 

[FR Doc". 95-4048 Filed 3-i2-95; 8:45 am) 

BlUING CODE 1I4IiO-G~ 

15363