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15329

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

DEPARTMENT OF ENERGY

Office of Energy Efficiency and Renewable Energy

10 CFR Part 430 [Docket No. EE-RM-94-230]
Energy Conservation Program for Consumer Products:Test Procedures for Water Heaters; Kitchen Ranges, Ovens, and Microwave Ovens; and Clothes Washers; and Reporting Requirements for Clothes Washers, Clothes Dryers, and Dishwashers

AGENCY: Office ofEnergy Efficiency and Renewable Energy, Department of Energy. ACTION: Proposed Rule and Public Hearing.

SUMMARY: The Energy Policy and Conservation Act, as amended, requires the Department ofEnergy (DOEor the Department) to administer an energy conservation program for certain major household appliances and commercial equipment. Among other program elements, the Act requires that'standard methods of testing be prescribed for each covered product. The purposes of this Proposed Rulemaking are to: propose amendments to clarify the water heater; kitchen range, oven, and microwave; and clothes washer test procedures, announce the Department's intentions to incorporate byreference testprocedures adopted by the International Electrotechnical Commission (IEC), and request data, comments, and information regarding their applicability and workability. Today's amendments of the test procedures are not expected to alter the minimum energy conservation standards currently in effect, orthose being proposed in the Eight Products Notice of Proposed Rulemaking, published March 4, 1994 (59 FR 10464). DATES: Written comments in response to this notice must be received by August 31, 1995.

Oral views, data, and arguments may be presented atthe public hearing to be held in Washington, DC, beginning at 9:30 a.m. onJuly 12, 1995. Requests to speak at the hearing must be received by the Department no later than 4 p.m., June 28, 1995. Ten (10) copies of
statements to be given at the public hearing must be received by the Department no later than 4 p.m., July 5, 1995. ADDRESSES: Written comments, and requests to speak at the public hearing

are to be submitted to: U.S. Department of Energy, Office ofEnergy Efficiency and Renewable Energy, Hearings and Dockets, Test Procedures 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-RM94-230, Forrestal Building, 1000 Independence Avenue, SW., Washington, DC 20585.

The hearing will be held atthe U.S. Department ofEnergy, Forrestal Building, Room 1E-245, 1000 Independence Avenue, SW., Washington, DC.

Requests may be hand delivered between the hours of8 a.m. and 4 p.m., Monday through Friday, except Federal holidays. Requests should be labeled, "Test Procedures 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.

Copies ofthe transcript ofthe public hearing and public comments received may be read and/or photocopied at the Department ofEnergy Freedom of Information Reading Room, U.S. Department ofEnergy, Forrestal Building, Room IE-190, 1000 Independence Avenue, SW., Washington, DC 20585, (202) 586-6020 between the hours of9 a.m. and 4 p.m., Monday through Friday, except Federal holidays.

The Department will incorporate by reference test standards from the International Electrotechnical Commission upon publication ofthis rule as final. These standards are listed below:

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."

Copies ofthese standards may be viewed at the Department ofEnergy Freedom ofInformation Reading Room at the address stated above. Copies of the International Electrotechnical Commission Publication can be obtained from theAmerican National Standards Institute, 11 West 42nd Street, New York, New York 10036, (212) 642-4936.

Formore information'concerning public participation in this rulemaking proceeding, see Section XI, "Public Comment Procedures," ofthe SUPPLEMENTARY INFORMATION section. FOR FURTHER INFORMATION CONTACT:



### William 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 ofEnergy, Energy

Efficiency and Renewable Energy,Mail Station EE-431, Forrestal Building, 1000 Independence Avenue, SW., Washington, DC. 20585 Eugene Margolis, Esq., U.S. Department

ofEnergy, 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 ofTitle III ofthe 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. 100- 12, the National Appliance Energy Conservation Amendments of 1988, Pub. L. 100-357, and the Energy Policy Act of 1992, Pub. L. 102-486, created the Energy Conservation Program for Consumer Products other than Automobiles (Program).' 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 ofthree parts: Testing, labeling, and the Federal energy conservation standards. The Department, in consultation with the National Institute ofStandards 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 ofthe test procedures isto produce test results which measure energy efficiency, energy use, water use (in the case ofshowerheads, faucets, water closets and urinals); or estimated annual operating cost ofacovered product during a representative average
use cycle orperiod of use, and must not be unduly burdensome to conduct. EPCA, section 323(b)(3). A test

' Part BofTitle Il ofEnergy Policy and Conservation Act, as amended, is referred to in this final rule as "EPCA" or the "Act." Part BofTitle III Is codified at42 U.S.C. 6291-6309. _I

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procedure is not required ifDOE determines by rule that one cannot be developed. EPCA, section 323(d)(1). One hundred and eighty days after a test procedure for aproduct is adopted, no manufacturer may make representations with respect to energy use, energy efficiency or water use ofsuch product,

orthe cost ofenergy 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 ofup to an additional 180 days ifthe Secretary determines that the requirements ofsection 323(c)(2) would impose undue burden. EPCA, section 323(c)(3).

Section 323(e) ofthe Act requires DOE to determine to what extent, ifany,
a proposed test procedure would alter the measured energy efficiency, measured energy use or measured water

use ofany covered product as determined under theexisting test procedure. IfDOE 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 ofa representative sample of covered products that minimally comply with the existing standard. The average efficiency ofthese representative samples, tested usingthe amended test procedure, constitutes the amended standard. EPCA, section 323(e)(2).

B. Background

Today's notice proposes to modify the
test procedures for water heaters; kitchen ranges, ovens, and microwave
ovens; and clothes washers as follows: (1)Water heaters. (a) Revision ofsubpart B, appendix E. 1.Modify the test procedures to address electric and oil-fired instantaneous water heaters.

2. Include testing ofstorage-type water heaters having rated storage capacities less than 20 gallons (76 liters).

3. Revise the method used to calculate the first hour rating ofstorage-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 ofsubpart B, section 430.22 to include test procedure changes.

(b) Revision ofsubpart B, appendix I. 1. Revise the annual useful energy output toreflect 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 ofannual 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 anew section 4.3 "Combined Components" in this proposed rule.

(3) Clothes washers. (a) Revision ofsubpart B, §430.22 to include test procedure changes andto revise thenumber ofrepresentative average-use cycles per year.

(b) Revision ofsubpart 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 10watts 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.

* Clarifythe procedure for capacity testing.

* Clarify the requirements for "maximum fill" testing.

2. Incorporation oftest 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 capability.

3. Addition of optional water consumption and extraction procedures which include thefollowing:

* Add new definitions for the following terms: modified energy factor, moisture removal energy and water consumption factor.

* Add optional test procedures to determine theabove values.

(4) Addition to subpart F, §430.62, to add reporting requirements forenergy factors for clothes washers, clothes dryers, and dishwashers.

In addition, metric units of
measurements have been included in thethree test procedures (Englishvalues

are given followed bytheir appropriate International System ofUnits in parentheses).

II.Discussion

A. WaterHeaterTestProcedure

Today's proposed amendments to the water heater test 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 forheat pumpwater heater; and addition ofnew 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 ofthese changes would alter the energy conservation standards for water heaters currently in place, and requests comments on the impact ofthese changes, if any. In addition, DOE requests comments on the adequateness ofthetest 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 __ __ 

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procedure for heat pump water heaters regarding the use ofbackup electric resistance element(s).

Concurrently, the Department is conducting a rulemaking, independent oftoday's notice, to propose revised minimum energy conservation standards for eight consumer products, including water heaters. (59 FR 10464, March 4, 1994).

1.Electric and Oil-Fired Instantaneous Water Heaters

The current test procedure does not address testing ofelectric and oil-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 ofinstantaneous water heaters, and to amend the existing language to include the testing ofthem. Definitions for storage-type water heaters are 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 the applicable minimum energy conservation standards of0.59- (0.0019 x rated storage volume in gallons) for oil-fired water heaters and 0.93-(0.00132 x rated storage volume in gallons) for electric water heaters, respectively. Forelectric 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 ofadding electric and oil-fired instantaneous water heaters to the test procedure and subjecting them to the respective energy conservation 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 aletter to the Department, dated July 17, 1991, the Gas Appliance Manufacturer Association (GAMA) stated that storage-type water heaters having capacities less than 20 gallons (76 liters) are covered by the National Appliance Energy Conservation 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 ofless than 20 gallons (76 liters).

With regard to conducting the 24-hour simulated use test on water heaters having rated storage capacities less than 20 gallons (76 liters), the Department proposes to include the applicable draw schedule accepted bythe water heater industry. (See American National Standards Institute/American Society of Heating, Refrigerating and AirConditioning Engineers (ASHRAE) Standard 118.2-1993: Method ofTesting for Rated Residential Water Heaters.) The total volume withdrawn shall be 24 gallons (91 liters) for units having rated storage capacities greater than or equal
to 10 gallons (38 liters), but less than 20 gallons (76 liters). The total volume withdrawn shall be 9gallons (34 liters) for units having rated storage capacities less than 10 gallons (38 liters). The draw
rate shall be 1.0±0.25 gallons per minute (3.8±0.95liters per minute) for all units having rated storage capacities less than 20 gallons (76 liters). The Department requests comments and data regarding any impact on a manufacturer(s) as a result of extending coverage ofthe existing minimum energy efficiency standards to storage-type water heaters of less than 20 gallons (76 liters). See appendix E to subpart B ofTitle 10 CFR part 430, sections 1.11, 5.1.4.1, and 5.1.5.

3. First Hour Rating for Storage-type Water Heaters

Water heaters have historically been selected based on rated storage volume. Therate at which thewater heater produces hot water, and whether the water heater uses a lone or multiple heat source, however, is also important when selecting awater heater. For example, a smaller electric water heater having two 4.5-kilowatt elements may provide more hot water over a given time interval than

alarger electric water heater having a single 3.8-kilowatt element. The first hour rating seeks to account for the effect ofstorage capacity, heating rate, and the number ofheat sources on the
water heater's ability to provide hot water. Ideally, the consumer will use first hour rating to initially identify
water heaters thatwill meet their hot water supply needs. Once the field has been narrowed based on this need, the

consumer will then use energy factor, annual operating cost, first cost, warranty information, reputation of manufacturer, etc., in determining which water heater to select.

The first hour rating is not used in computing the efficiency (i.e., energy factor) ofwater heaters, but isused by the Federal Trade Commission for presenting size ranges in the labeling program for water heaters. It was hoped that this measure would gain recognition as a sizing criterion for

consumers in selecting water heaters. As a result, the Department has been conducting acontinuous effort to improve the first hour rating method in rulemakings for water heaters. However, the concept ofwhat the first hour rating should represent (i.e., a balance between storage capacity, recovery rate, and mixing characteristics) and how to

measure itaccurately has provenf to be

a difficult task. Each attempt at establishing afirst hour rating test has led to difficulties (repeatability problem with the 1989 proposal (54 FR 1890, January 17, 1989), and a low estimate of hot water availability for certain water heaters bythe 1990 final rule. (55 FR 42162, October 17, 1990).) For example, in a October 15, 1991, letter from GAMA
to DOE, GAMA stated that "Gas Appliance Manufacturers Association members have results establishing first hour ratings in therange of 70to 75 gallons for 120 gallon models. The calculated first hour rating is significantly less than the amount of water drawn during the first draw." This problem with the October 17, 1990,
current test method is most evident for large tanks with oneheating element because ofthe greater weighing given by the test procedure to recovery rate relative to storage volume.

To correct the problem of understating hot water production cited by GAMA, the Department requested NIST to evaluate a proposal recommended by GAMA in its October 15, 1991, letter to DOE. GAMA's recommendation would prorate the final draw ofthe 1990 first hour rating test with respect to a ratio ofelapsed times. NIST summarized the advantages and disadvantages ofGAMA's recommendation. The major advantages

are: The first hour rating would always be greater than orequal to the first draw volume and retesting for FTC labeling may be unnecessary ifthe needed additional data was collected. Themajor disadvantages are: The rating would represent a volume ofhot water that is greater than or equal to the maximum volume ofhot water that can be delivered in an hour (overstating), and it may not differentiate single-element fromtwo-element electric water heaters (recovery capabilities unrecognized). The Department, therefore, concludes that the disadvantages ofGAMA's recommendation outweigh the advantages and rejects this proposal.

The Department requested NIST to conduct a second studyto correct the problem ofunderstating hot water production. NIST recommended that a revised version ofthe 1989 test method be proposed. NIST stated its recommendation will correct the understating problem cited by GAMA in

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the October 15, 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 testmethod for storage tank-type water heaters, hot and cold water mixing characteristics, and the criterion forinitiating 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 aresult ofa 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*ma,i

- 25°F, where i corresponds tothe draw number. Ifa recovery is still in progress at one hour, the draw imposed to remove any stored "hot" water shall be terminated based

on the cut-offtemperature used forthe previous draw (T*ma,n_

- 25°F). In addition, for draws imposed at one hour, the first hour rating shall be the

sum of: All the withdrawn volumes and the final withdrawn volume, wherethe final withdrawn volume is multiplied by the following temperature ratio:

(T*de,n-T*min,n-l) /(T*del,n- I 

### -T*mi,n_-). The subscripts n and n-l

are used to indicate the final draw and the next-to-last draw, respectively, while T*nin- designates the water temperature at which the next-to-last draw was terminated (T*min.-_ = T*ma,,n-

- 25°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 ofmixing that occurs between the stored hot water and theentering make-up water during a draw. The greater the volume ofmake-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 ofthe tank. However, ifawater heater uses a thermally compensating diptube (first discussed in the February 8, 1984, Proposed Rulemaking, 49 FR 4870), or
an internal mixing valve, substantial mixing, and thus, ahigher and unrealistic first hourrating could occur. At present, DOE isnot aware ofany 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 ofmixing ofstored 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 ofthetest tolerances allowed for the thermostat setting(s) [±5°F (±2.8°C)], and for the make-up water temperature [+2°F (±1.1°C)]. These test tolerances affect the time required for the water heater to

recover from a hot water draw. For example, recovery time is quickest ifthe tankthermostat(s) is set to 130°F (54.4°C), and the make-up water is set at 60°F (15.6°C). Recovery time is slowest for settings at 140°F (60°C) and 56°F (13.3°C). To avoid the potential complication and confusion that would result from an additional temperature ratio correction, however, atest 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 60°F (15.6°C).

Preliminary studies conducted by NIST estimate today's proposed test method is successful in minimizing the repeatability problem to within ±5 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 1.5.

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 anyresistive 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 initiated after thethermostat controlling the
upper or lone resistive element, or the
compressor is satisfied, whichever occurs first. However, this criterion shall be applicable only ifthe water located vertically above the resistive element thermostat orcompressor thermostat is heated to 135 +5°F (57.2

± 2.8°C) when cut-offoccurs. The Department requests comments and data

on the appropriateness and workability ofthe proposed changes to the test method for heat pump water heaters thatuse supplemental resistive heating. See appendix E to subpart B ofTitle 10 CFR part 430, section 5.1.4.2.
4. Definitions for Heat PumpWater Heaters, Add-on Heat Pump Water Heaters, Integral Heat Pump Water Heaters, Solar Water Heaters, and Heat PumpWater Heater Storage Tanks

The Department proposes to amend the extant definition for heat pump water heaters (section 1.11.3); add definitions ofintegral heat pump water heater (section 1.11.3.a), add-on heat pump water heaters (section 1.11.3.b), and solarwater heaters (section 1.11.5) to differentiate these types ofwater heaters; and add definition ofaheat
pump water heater storage tank, i.e., the tank to be used with an add-on heat pump water heater (section 1.6).

B.KitchenRanges,Ovens and Microwave Ovens TestProcedures

Thetest 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 ofcurrent United States cooking product usage. In addition, the proposed test procedure will no longer contain annual energy consumption calculations for ranges (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 ofcombined appliances as the sum ofthe annual energy consumption ofeach individual component ofthe unit. Section 4.3. The Department is proposing to incorporate by reference the International Electrotechnical Commission (IEC), 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 

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"Efficiency." DOE has notproposed test procedures for grill and griddle cook tops: the Department would consider addingtest procedures for these products ifsuch exist.

1.Ovens

Today's proposed revision to the oven test procedures lowers the constant for annual useful cooking energy 2

### to make it representative of current United States cooking trends. This quantity is being changed for electric to 35.5 kWh (105.5 MJ) per yearfrom 47.09 kWh (169.5 MJ) peryear; for gas, to 124,200 BTU (131,038 kJ) per year from 160,700 BTU (169,547 kJ) per year. Sections 4.1.2.1.1, 4.1.2.1.2, and 4.1.4. Lawrence Berkeley Laboratory of Berkeley, California calculated this constant from several utility studies. These results are presented in the Technical Support Document: Energy Efficiency Standards forConsumer Products, Volume 2, November 1993, DOE/EE-0009, Vol. 2 of3.

In addition, the Department proposes to eliminate the requirement to use a standard continuous flow calorimeter forgas cooking products because ofthe difficulty of locating this product. The instrument to be substituted for the standard continuous flow calorimeter is left to the discretion ofthe manufacturer; although, it is required that the heating value of natural or propane gas shall be measured with an instrument and associated indicator readout device ofa maximum error no greater than ±.5 percent ofthe measured value and a resolution of :2 percent or less ofthe full scale reading ofthe indictor instrument. Section 2.9.4.

2. Cook Tops

The proposed revision to the cook top test procedures changes the constant for annual useful cooking energy 3

### to make it representative of current United States cooking trends. This quantity is being lowered for electric to 209 kWh (752.4 MJ) per year from 277.7 kWh (1000 M) per year; for gas, to 732,500 BTU (772,800 kJ) per year from 947,500 BTU (999,600 kJ) per year. Lawrence Berkeley Laboratory ofBerkeley, California calculated this constant from several utility studies.These results are presented in the Technical Support Document: Energy Efficiency Standards

2The annual useful cooking energy Isenergy input to anoven which is transferred to theproduct beingcooked andis a constant used tofindthe annual energy consumption and theenergy factor. The annual energyconsumption is calculated by multiplyingthe constant bythe ratio oftestenergy consumption to the energyused to heat thetest block. The energy factor isthe ratio oftheconstant to the total annual energy consumption.

3See footnote 2, supra. 

### for Consumer Products, Volume 2, November 1993, DOE/EE-0009, Vol. 2 of3.
3. Microwave Ovens

The proposed changes to the microwave oven test procedures are in response to apetition for rulemaking from the Association ofHome Appliance Manufacturers (AHAM) to

usethe International Electrotechnical Commission standard as the DOE test procedure. The current DOE test procedure is based on a 1975 version of the International Electrotechnical Commission standard. TheAssociation ofHome Appliance Manufacturers cited thefollowing deficiencies with the DOE
test procedure:

(1)Errors caused byevaporative cooling ofthewater and heat absorption ofthe water containers during the heating period, and

(2) Errors caused by the constantly changing sodium chloride concentration dueto sodium chloride precipitating out ofsolution.

The International Electrotechnical Commission issued Publication 705, and Amendment 2-1993 entitled "Method for Measuring the Performance of Microwave Ovens for Household and Similar Purposes" in 1993. The Department asked the National Institute ofStandards and Technology to perform tests using the 1993 International Electrotechnical Commission test procedure. TheNational Institute of Standards and Technology found the test procedure to be acceptable for determining power output and efficiency, and recommended that the Department ofEnergy incorporate by reference the International Electrotechnical Commission 705 Amendment 2-1993 test procedure for these purposes. In computing energy consumption, the International Electrotechnical Commission 705 Amendment 2-1993 uses a watt meter and timer, ignoringtransients, to obtain
measurements from which energy consumption can be calculated. The Department believes that because of start-up transients, the use ofawatthour meter is more accurate; therefore, today's notice includes the use ofa watt-hour meter, which is not found in the IEC 1993 test procedure, to obtain energy consumption.

The annual useful cooking energy in the extant test procedure is 34.2 kWh (123 MJ) per year based on 1976 data. In the Eight Product rulemaking (59 FR 10464, March 4, 1994), DOEused an annual useful cooking energy of 145.8 kWh per year in its analysis. Technical Support Document: Energy Efficiency Standards for Consumer Products, Volume 2, November 1993, DOE/EE0009, Vol. 2 of 3, pp. 1-49. After reviewing several utility studies and comments, DOE is proposing to change theannual useful cooking energy 4 

### from 34.2 kWh (123 MJ) per year to 77.3kWh (278.3MJ) per year. This revision to the annual useful cooking energyreflects current U.S. microwave cooking usage. This will change the value ofOm in the
test procedure to 77.3 kWh/yr [143.2 kWh/yr x 0.54 = 77.3 kWh/yr] (278.3 MJ/yr). (Seeappendix Ito subpart B of title 10 CFR part 430, "Uniform Test Method for Measuring the Energy Consumption ofConventional 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 ofsix utility studies.These studies include: Lawrence Berkeley Laboratory, "Baseline Data for the Residential and Development ofa Residential Forecasting Database," LBL 33717, May 1994; American Electric Power, "Utility Estimates ofHousehold Appliance Electricity Consumption," 1992; Southern California Edison, "Residential Appliance End-Use Survey," 1990 and 1991; Electric Power Research Institute, "Residential End-Use Energy Consumption: A Survey of Conditional Demand Estimates," CU6487, October 1989; and the Sierra 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 WasherTestProcedure

TheDepartment published the clothes washer test procedure on September 28, 1977, (42FR 49802) and subsequently

on June 29, 1979, (44 FR 37938) editorial changes were made. On December 22, 1993, (58 FR 67710) 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 to the clothes washer test procedure will

4The annual useful cooking energy isenergy input toan ovenwhich is transferred to theproduct being cooked and is aconstant usedto find the annual energy consumption andthe energy factor. The annual energy consumption is calculatedby multiplying the constant by the ratio oftestenergy consumption to the energyused to heatthe test water load. The energy factor is theratio ofthe constant to the total annual energy consumption. 

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address issues that are independent from the temperature selection lock-out feature.

Today's proposed amendments tothe clothes washer test procedure do not. alter theenergy factor of any existing clothes washer that minimally complies with the existing efficiency standard.

In the Advance Notice ofProposed 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 thatmechanical water extraction in a clothes washer is much more cost effective and efficient than thermal extraction in aclothes dryer. The Department proposes today's procedures and calculations for water extraction in clothes washers that would be used in the standards rulemaking for consideration ofwater extraction. Any analysis for clothes dryer efficiency standards would account forthe impact ofmoisture retention ofclothes entering the clothes dryer.

The Department ofEnergy today proposes to modify the clothes washer test procedure as follows: 1.Title 10 CFR part 430, subpart B, section 430.22(j).

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 ofcycles consumers use on a yearly basis has decreased: Thus, the Department is proposing to revise the representative average-use cycles to 392 peryear. 5

### This change lowers annual energy use and annual energy cost.

2. Title 10 CFR part 430, subpart B, appendix J.

a. General test procedure clarification. The Department is proposing to add a definition for "agitator" (section 1.1). The existingtest procedure mentions "agitator" but, does not provide a definition.

The Department isproposing 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-loaderhorizontal-axis clothes washer" (section 1.21) and "top-loader-vertical-axis clothes washer" (section 1.22). The

5392 represents the average number ofcycles per year from 1986 through 1994. obtained by P & G survey data and provided to theDepartment via letter dated September 2. 1994.. 

### Department has become aware oftoploading-horizontal-axis clothes washers which are readily available in other countries. These clothes washershave 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-1" (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 proposing 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 ofclothes washers which allow selective agitation and spin speed settings independent ofthe normal cycle. Therefore, the proposed test procedure specifies requirements for clothes washers with these features.

The Department is proposing.to change the symbolfor density from "d" to "p." Therequirement to use the density ofwater at 140°F was deleted,

so thatthe density ofwater at the measured temperature will be used.

The Department isproposing to clarify the requirement for "maximum fill" testing. The Department wants to

ensure that testing ofa 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 oftemperature isbased

on preset orifices. The Department believes that thesemachines are offering additional temperature selections. Therefore, instead ofdeveloping additional Temperature Utilization Factors,the Department is proposing to require theuse ofthe 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 ofthe 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). TheDepartment's proposal is intended to remove any ambiguity regarding the testing ofclothes washers equipped with this type oftemperature 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-001) by Decision and Order, published on April 4, 1994. (59 FR 15710). Asko Incorporated (Asko)

was issued aWaiver (Case No. CW-002) by Decision and Order, published on April 4, 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.

TheDepartment 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 burden. This increase in tolerance will not reduce the accuracy ofenergy consumption testing/ reporting.

The Department is 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 atthe coldest and hottest setting available on the clothes washer in addition to theexisting 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 athree temperature selection nonwater-heating clothes washer. The Department believes that the existing TUFs for a three temperature selection nonwater-heating clothes washer are 

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appropriate fora water-heating clothes washer, except that some consumers will occasionally choose to use a temperature setting higherthan the "hot" setting since it isavailable to them. The existing temperature use factors for "cold/cold" (15 percent), "warm/warm or warm/cold" (55 percent) and "hot/warm or hot/cold" (30 percent) have been split into four TUFs, one of 15 percent for the "coldest" setting, one of55 percent for the "warm" setting, one of25 percent for "hot" and one of5 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 Department 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 is proposing that the supply water temperature be set at "a minimum of 55°F (12.8°C) and a maximum of60°F (15.6°C)." The "warm" temperature shall be setat "a minimum of 100°F (37.8°C) and a maximum of 105°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 tightertolerances 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 awater-heating clothes washer because the energy to raise the water temperature is measured from electrical consumption versus being calculated as it isfor nonwater-heating clothes washers.

Since the issue ofmachine-controlled
water fill capability has been raised by the Asko Waiver, the Department wants to provide a provision for the possibility of any type ofclothes 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 arevision to the "toploader-vertical-axis clothes washer" section (section 2.8.1) to require theuse ofa test load forclothes washers with

a machine-controlled water fill capability feature. Therefore, a clothes washer equipped with machined-. controlled water fill capability will be tested formaximum fill energy consumption using a 7 pound (3.18 kg)
test load and for minimum fill energy consumption using a 3 pound (1.36 kg)
test load. The Department believes that consumers will occasionally wash loads which are larger than 7 pounds (3.18 kg) and will also wash loads which are smaller than 3 pounds (1.36 kg). This provision will allow for testing of clothes washers that may have this feature. The Department welcomes
comments on this proposed provision.

c. Water consumption and extraction testing.

The Department is concerned about water conservation and wishes to provide for a procedure to determine the
water consumption ofclothes washers. The Department believes, consistent with the Energy Policy Act of 1992, Pub. L. 102-486, thatwater conservation is important, and aneed may existto determine actual water use.

Therefore, the Department is proposing to add definitions, testing procedures, and calculations regarding
water use.Additionally, forthose water

or sewage utilities wishingto include particular clothes washers in rebate programs, the DOE test procedure would provide a standardized means of testing for water consumption.

The Department is proposing to add a definition for a "Water consumption factor" (section 1.23). Calculations for thewater consumption factor are provided in section 4.3. The water consumption factor isthe ratio ofthe clothes washer capacity divided by the weighted per-cycle water consumption. The weighted per-cycle water consumption is the actual weighted volume ofwater that a particular clothes washer consumes. This measurement could be used to estimate water consumption on an annual basis. The Department welcomes comments on this proposal.

The Department is concerned about water extraction in the clothes washers' final spin.The Department believes that mechanical extraction in a clothes washer is more efficient than thermal extraction in aclothes dryer. Therefore, the Department wishes to provide for a procedure measuring thewater extraction in clothes washers. The Department is proposingto add a definition for "moisture removal energy" (section 1.10). Moisture removal energy equals the weight ofthe residual water in thetest load at the completion ofthe clothes washer cycle multiplied by the nominal energy needed to remove moisture using a representative clothes dryer efficiency. The calculations for moistureremoval
energy are provided in the proposed test. procedure section 4.2. In today's notice, the Department requests comments, data, and other relevant information regarding the definition and calculation ofthe moisture removal energy. The Department is proposing a value of0.5 Kwh/lb as theenergy efficiency ofa representative clothes dryer to remove moisture. The Department also is interested in comments as to the validity and usage ofthis value.

TheDepartment is interested in developing anew energy descriptor, called a modified energy factor, which will include moisture removal energy, for possible future standard use. This

new descriptor will provide a means of determining and comparing the entire energy consumption ofclothes washers. Therefore, the Department isproposing
to add a definition for "modified energy factor" (section 1.9). The modified energy factor equals the ratio ofthe capacity ofthe clothes washer divided bythe total energy, which consists of the mechanical, hot water and moisture removal energy. The calculations for the modified energy factor are provided in the proposed test procedure section 4.4. The Department requests comments, data, and other relevant information regarding the definition and calculation ofthis new energy descriptor.

D.ReportingRequirements

The Department is proposing to revise the reporting requirements for clothes washers, dishwashers and clothes dryers. The present regulations do not require the reporting of the energy factors for these products. Prior to the May 14, 1991 final rule for clothes washers, dishwashers and clothes dryers, there were no performance standards for these products. Now, since there are performance standards for these products, the Department is proposing to include certification reporting. Section 430.62(a)(2).
III.Environmental Review

Pursuant to section 7(a) ofthe Federal Energy Administration Act of 1974 (Pub.L. 93-275, 15U.S.C. 766(a)), a copy of this noticewas submitted to the Administrator of the Environmental Protection Agency forthe Administrator's comments concerning the impacts ofthis proposal on the quality ofthe environment.

DOE has concluded thatthis proposed rule falls into a class ofactions (categorical exclusion A5) that are categorically excluded from NEPA review because theywould not individually or cumulatively have a significant impact on the human environment, as determined by DOE's regulations (10 CFR part 1021, Subpart D) implementing the National Environmental Policy Act of 1969 (42 U.S.C. 4321, 4331-35, 4341-47 (1976)). _I I_ __ 

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Therefore, this proposed rule does not require an environmental impact
statement or an environmental assessment pursuant to NEPA.

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 theRegulatory Flexibility Act, Pub. L. 96-354 (42 U.S.C. 601-612) which requires preparation ofa regulatory flexibility analysis for any regulation that will have a significant economic impact on a substantial number of small entities, i.e., small businesses and small government jurisdictions. The proposed rule affects manufacturers ofwater heaters; kitchen ranges, ovens, and microwave ovens; and clothes washers. The test procedures would not have significant economic impact, butrather, would provide common testing methods. DOE accordingly certifies that the proposed rule would not, ifpromulgated, have a significant economic impact on a substantial number ofsmall entities and that preparation ofa regulatory flexibility analysis is notwarranted.

VI. "Takings"Assessment Review

It has been determined pursuant to Executive Order 12630 (52 FR 8859, March 18, 1988) thatthis proposed regulation, ifadopted, 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" ofprivate 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 ofpower and responsibilities among various levels of Government. Ifthere are sufficient substantial direct effects, the Executive Order 12612 requires the preparation of

a Federalism assessmentto be used in decisions by senior policymakers in promulgating or implementing the regulation.

DOE has identified a substantial direct effect thattoday'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 ofa 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 acase-by-case basis using criteria set forth in the Act. When DOE receives such apetition, it will thenbe appropriate to consider preparing afederalism assessment consistent with the criteria inthe Act.

VIII. Review Under Section 32 ofthe FederalEnergy Administration Authorization Act

Thetest 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 outputpower and efficiency for microwave ovens.

Pursuant to section 301 ofthe Department ofEnergy Organization Act (Pub. L. 95-91), DOE is required to comply with section 32 ofthe Federal Energy Authorization Act of 1974 (15 U.S.C. 788), which imposes certain requirements where a proposed rule contains commercial standards or authorizes orrequires the use ofsuch standards.

The findings required ofDOE by section 32 oftheAct serve to alert the public and DOE regarding the use and background ofcommercial standards in

a proposal and through the rulemaking
process. They allow interested persons to make known their views regarding the appropriateness ofthe use ofany particular commercial standard in a proposed rulemaking.

DOE has evaluated the promulgation ofInternational Electrotechnical Commission Publication 705, and Amendment 2-1993, in light ofthe public participation criteria ofsection 32(b). The Department is unable to conclude whether development ofthese 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. PaperworkReduction Act Review

No new information orrecordkeeping requirements are imposed by this rulemaking. Accordingly, no OMB clearance isrequired under the Paperwork Reduction Act (44 U.S.C. 3501 etseq.).
X. Review Under Executive Order 12778

Section 2 ofExecutive 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 anypreemptive effect, effect on existing Federal law or regulation, and retroactive effect; describes anyadministrative proceedings to be available prior to judicial review and anyprovisions for the exhaustion ofsuch administrative proceedings; and defines key terms. The DOE certifies that today's proposed rule
meets the requirements ofsections 2(a) and (b)(2) ofExecutive Order 12778.

XI. Public Comment Procedures
A. Written CommentProcedures

Interested persons are invited to participate in the rulemaking by submitting data, comments, or information with respect to the proposed test procedures set forthin this notice to the address indicated at the beginning of thenotice.

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 (10) copies are requested to be submitted. In addition, the Department requests that

an electronic copy (3'/z" diskette) ofthe
comments on WordPerfectTM 5.1 be provided. All submittal received by the date specified at the beginning ofthis notice will be considered by the Department ofEnergy before final action istaken on the proposed amendments. 

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Pursuantto theprovisions of 10 CFR 1004.11, any person submitting information which he or she believes to be confidential and exempt by law from public disclosure should submit one complete copy ofthe document and ten (10) copies, if possible, fromwhich the information believed to be confidential has been deleted. The Department of Energy will make itsown 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 confidential information that has been submitted include: (1) A description of the items; (2) an indication as to whether and why such items are customarily treated as confidential within the industry; (3) whether the information is generally knownby or available from other sources; (4) whether the information haspreviously been made available to others without obligation concerning its confidentiality; (5) an explanation ofthe competitive injury 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 ofthe information would be contrary to the public interest.

B. Public Hearing

1.Procedures for Submitting Requests to Speak

The time and place ofthe public hearing are indicated at the beginning of this notice. The Department ofEnergy invites any person whohas an interest in today's proposed rule, orwho is a representative ofa group or class of persons that has an interest in the proposed test procedures, to make a written request for an opportunity to make an oralpresentation. 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 of8 a.m. and 4 p.m., Monday through Friday, except Federal holidays. Requests should belabeled "Test Procedure for Water Heaters; Kitchen Ranges, Ovens and Microwave Ovens; and Clothes Washers; and Reporting Requirements forClothes Washers, Clothes Dryers, and Dishwashers, Docket No. EE-RM-94-230," both on the document and on the envelope.

The person makingthe request should briefly describe the interest concerned and state why he or she, either individually or as arepresentative ofa 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 submit anadvance copy of theirstatement prior tothe hearing as indicated atthe beginning ofthis notice. In the event any persons wishingto testify cannot meet 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 an oral presentation.

2.Conduct of Hearing

. The Department ofEnergy reserves the right to selectthe persons to be heard at the hearing, to schedule the respective presentations, and to establish the procedures governing the conduct ofthe hearing. The length of each presentation is limited to twenty (20) minutes.

A DOE official will be designated to preside at the hearing. The hearing will not be ajudicial or an evidentiary-type hearing, but will be conducted in accordance with 5 U.S.C. 553 and section 336 ofthe Act. At the conclusion ofall initial oral statements at each day ofthe hearing, each person who has made an oral statement will be giventhe opportunity to make arebuttal statement, subject to time limitations. The rebuttal statement will be given in the order in which the initial statements

were made. Theofficial conducting the hearing will accept additional comments or questions fromthose attending, as time permits. Any interested person may submit, to the presiding official, written questions to be asked ofany 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 ofthe hearing will be announced by the presiding official.

A transcript ofthe hearing will be made, and the entire record ofthis rulemaking, including the transcript, will be retained by DOE and made available for inspection at the DOE Freedom ofInformation Reading Room, U.S. Department ofEnergy, Forrestal Building, Room 1E-190, 1000 Independence Avenue, SW., Washington, DC 20585, (202) 586-6020, between the hours of9 a.m. and 4 p.m., Monday through Friday, except Federal holidays. Any person may purchase a copy ofthe transcript from the transcribing reporter. C.'IssuesforPublicComment
The Department ofEnergy is interested in receiving comments and data concerning the accuracy and workability ofthese 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 oil instantaneous water heaters.

* The impacts on manufacturer(s) as

a result ofextending coverage ofthe existing minimum energy efficiency standards for electric and oil-fired instantaneous water heaters.

* The appropriateness of including the draw schedule and draw rate ofthe American National Standards Institute/ American Society ofHeating, 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 ofextending coverage ofthe existing minimum energy efficiency standards for storage-type water heaters ofless than 20 gallons (76 liters).

* The appropriateness ofthe proposed definition, first hour rating, for instantaneous and storage water heaters.

* The appropriateness ofthe proposed first hour rating test method for storage tank-type water heaters.

* The appropriateness ofafirst hour rating which might give 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 pump water heater storage tank.

* The adequateness ofthetest provisions for heat pump water heaters regarding the usage ofbackup electric resistance element(s).

* The appropriateness ofthe proposed test energy method to determine the output energy for microwave ovens.

* The appropriateness to incorporate byreference 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 _I s I 

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Measurement," and Paragraph 14 "Efficiency" as a testmethod for microwave ovens.

* The appropriateness ofthe proposed definitions: Agitator, machinecontrolled water fillcapability, modified energy factor, moisture removal factor, nonwater-heating clothes washer, thermostatically controlled valves, top-loader-horizontalaxis clothes washer, top- loader-verticalaxis clothes washer, water consumption factor and water-heating clothes washer.

* The appropriateness ofthe proposed test and performance
measurement methods for water-heating clothes washers.

* The appropriateness ofusing 5 percent and 25 percent to prorate the "hottest" available setting and the "hot" setting, respectively, for water-heating clothes washers.

* The appropriateness of anew descriptor (moisture removal energy) to determine the efficiency of moisture removal from the test load.

* The appropriateness ofa new descriptor (water consumption factor) to determine the water consumption of clothes washers.

* The appropriateness ofa new efficiency descriptor (modified energy factor) for possible future use in establishing energy conservation standards for clothes washers.
Listof Subjects in 10 CFR Part430

Administrative practice and procedure, Energy conservation, Household appliances, Incorporation by reference.

Issued inWashington. DC, February 8. 1995. Christine Ervin, AssistantSecretary,EnergyEfficiency and RenewableEnergy.



### For the reasons set forth in the preamble, part 430 ofchapter II oftitle 10, ofthe Code of Federal Regulations is proposed to be amended as setforth below:

PART 430-ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS

1.The authority citation forPart 430 continues to read as follows:

Authority: 42U.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) * * * (ii) U.S. Department ofEnergy, Office ofEnergy Efficiency and Renewable Energy, Hearings and Dockets, Forrestal Building, 1000 Independence Avenue, SW., Washington, DC 20585.

(3) * * * (iv) Copies ofthe 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 ofMicrowave Ovens forHousehold and Similar Purposes." Section 4.Paragraph 12 "Microwave Power Output Measurement," Paragraph 13 "Electrical Power Output Measurement," and Paragraph 14 "Efficiency."
§430.23 [Amended]

3. Section 430.23, Test procedures for

measures ofenergy consumption, is amended to read as follows:

A. In §430.23(i)(1)(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(i)(3) (firstsentence) replace "4.3.2, and 4.5.2" with "4.3" and replace thecomma following "subpart" with aperiod and remove the remainder ofthe sentence.

D. In §430.23(i)(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 §430.23(j)(1)(i)(A) replace "416" with "392".

F. In §430.23(j)(1)(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 §430.23(j)(1)(ii) (introductory text) replace "When gas-heated oroilheated water is used, the product of: the representative average-use cycle of416 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. In §430.23(j)(l)(ii)(A) replace "4.4" with "4.1.1.4".

I.In §430.23(j)(1)(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 (j)(2) is revised to read as follows: §430.23 Test procedures formethods of energy consumption.

* * * * *



# 0)* * * (2) (i) Theenergy factor for automatic and semi-automatic clothes washers shall be the quotient of the cubic foot (liter)capacity ofthe clothes container

as determined in 3.1 ofappendix 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, ofappendix Jto this subpart; (orfor water-heating clothes washers) the energy consumption as determined in 4.1.2.2, ofappendix J to this subpart. The result shall be rounded offto the nearest 0.01 cubic foot per kilowatt-hour per cycle (0.01 literper kilowatt-hour per cycle).

(ii)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), ofappendix J to this subpart. The result shall berounded 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 isdetermined in accordance with section 4.3.3, ofappendix Jto 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 ofpart 430 is revised to read as follows: Appendix Eto SubpartB ofPart430- Uniform Test Method for Measuring the Energy Consumption ofWaterHeaters

1.Definitions



### 1.1 Cut-inmeansthe time orwater temperature when a water heater thermostat has acted to increase the energy or fuel input
tothe heating elements, compressor, or burner.

1.2 Cut-outmeans the time or water temperature whena water heater thermostat has acted to reduce to a minimum the energy

orfuel input to the heating elements. compressor, orburner.

1.3 DesignPower Ratingmeans the nominal power ratingthat a water heater manufacturer assigns to a particular design of waterheater, expressed in kilowatts orBtu (KJ) per hour as appropriate.

1.4 EnergyFactormeans a measure of
water heater overall efficiency.

1.5 First HourRatingis an estimate ofthe maximum volume of "hot" waterthat a storage-type water heater can supply within

an hour that begins with the water heater _I I__

_ I 

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### Federal Register / Vol. 60, No. 56 / Thursday. March 23. 1995 / Prnnosed Rilsa

fully heated (i.e., all thermostats satisfied). For instantaneous water heaters, first hour rating designates the maximum volume of hot water that canbe supplied during any hour.

1.6 Heat Pump WarerHeater Storage Tank is an insulated tank designed, wired and labeled for use exclusively with anadd-

on heat pump waterheater or solar water heater and being unable to operate without

an add-on heat pump water heater or solar water heater. The heat pumpwater heater storage tank may contain one or two thermostats and up to two 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 solar water heater inoperative, the heat pumpwater heater storage tank shall have an energy factor that is determined in accordance with the test procedure for water heaters.

1.7 Heat Trapmeans a device which can be integrally connected or independently attached to the hot and/or cold water pipe connections ofa water heater suchthat the device will develop a thermal or mechanical seal to minimize the recirculation ofwater due to thermal convection between the water heater tank and itsconnecting pipes.

1.8 Instantaneous-TypeWaterHeaters. 1.8.1 ElectricInsantaneousWaterHeater

means a water heater that uses electricity as the energy source, initiates heating based on sensing water flow, is designed to deliver waterat a controlled temperature ofless than 180°F (82°C), has a maximum input of 12 kilowatts or less, and has a manufacturer's specified storage capacity ofless than 2 gallons (8 liters). The unitmay usea fixed

or variable power input.

1.8.2 GasInstantaneousWaterHeater

means a water heater that uses gas as the energy source, initiates heating based on sensing water flow, is designed to deliver water ata controlled temperature ofless than 180°F (82°C). has an input greater than 50,000 Btu per hour (53 MJ per hour)butless than 200.000 Btu per hour (210 MJ per hour), and has a manufacturer's specified storage capacity ofless than 2 gallons (8 liters). The unit may use a fixed or variable burner input.

1.8.3 OilInstantaneousWaterHeater

means a water heater that uses oil as the energy source, initiates heating based on sensing water flow, isdesigned to deliver water at a controlled temperature ofless than 180°F (82°C), has aninput greater than 50,000 Btu per hour (53 MJ perhour) but less than 200.000 Btu per hour (210 MJ per hour), and has a manufac:urer's specified storage capacity of less than 2 gallons (8liters). The unit mayuse a fixed or variable burner input.

1.9 RecoveryEfficiencymeansthe ratio of energy delivered to the water tothe energy content of the fuel consumed by the water heater.

1.10 Standbymeans the time during which water is not being withdrawn from the water heater. There are two standby time intervals usedwithin this test procedure: tstby.l represents the elapsed time between the time at which the maximum mean tank temperature is observed after the sixth draw and subsequent recovery and the end of the 24-hour test: tstby2 represents the total time during the 24-hour simulated use test when water was notbeing withdrawn from the water heater.

1.11 Storage-Type Water Heaters. 1.11.1 Electricstoragewaterheatermeans a water heater that uses electricity as the energy source, is designed to heat and store water at a thermostatically controlled temperature ofless than 180°F (82°C), has a nominal input of 12 kilowatts or less, and has

a manufacturer's rated storage capacity of 12C gallons (450 liters) or less.

1.11.2 GasStorageWaterHeatermeans a water heater thatuses gas as the energy source, isdesigned to heat and store water at
a thermostatically controlled temperature of less than 180°F (82°C), hasa nominal input of75,000 Btu per hour (79 MJ perhour) or less, and has a manufacturer's rated storage capacity of 100gallons (380 liters) or less.

1.11.3 HeatPumpWaterHeater meansa water heater thatuses electricity as the energy source, is designed to heat and store water ata thermostatically controlled temperature ofless than 180°F (82°C), has a maximum current rating of24 amperes (includes the compressor and all auxiliary equipment such as fans, pumps, and controls, and if on the same circuit, any resistive elements) for an inputvoltage of250 volts or less, and, ifthe tank is supplied, has

a manufacturer's rated storage capacity of 120 gallons (450 liters) or less. Resistive elements used to provide supplemental heating may use the same circuit as thecompressor if (1) An interlocking mechanism prevents concurrent compressor operation and resistive heating, or (2) concurrent operation does not result in the maximum current rating of24 amperes being exceeded. Otherwise, separate circuits shall be used by the resistive elements and the heat pump components. A heatpump water heater may be an integral type oran add-on type.

a. Integral heat pumpwater heater-An airto-water heat pump integralwith an insulated storage tank.

b. Add-on heat pumpwater heater-An airto-water heat pumpdesigned for usewith a heat pumpwater heater storagetank.

1.11.4 OilStorageWaterHeater means a water heater thatuses oil as the energy source, isdesigned 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 Btu/hr (110 MJ/hr) or less, and has a manufacturer's rated storage capacity of50gallons (190 liters)or less.

1.11.5 Solar WaterHeatermeans a water heater that is designed to obtain at least half of theannual energy for heatingwater from the sun.

1.12 ASHRAE Standard 41.1-86means the standard published in 1986 by the American Society ofHeating, Refrigerating and Air-Conditioning Engineers, Inc. and titled Standard Measurement Guide: Section

on Temperature Measurements.

1.13 ASTM-D-2156-80means the test standard published in 1980 by the American Society ofTesting and Measurements and titled Method for Smoke Density in Flue Gases from Burning Distillate Fuels. 1.14 RatedStorageVolumemeans the water storage capacity ofa water heater, in gallons (liters), as specified by the manufacturer.

2. Test Conditions

s 2.1 InstallationRequirements.Tests shall

be performed with the waterheater and instrumentation installed in accordance with Section 4 ofthis appendix.

2.2 AmbientAir Temperature.The ambient airtemperature shall be controlled to a value between 65.0°F and 70.0°F (18.3°C and 21.1°C) on a continuous basis. For heat pump water heaters, the dry bulb temperature shall be maintained at 67.5°F + 1°F (19.7°C ± 0.6°C) and, in addition, the relative humidity shall be maintained between 49 and 51 percent.

2.3 Supply WaterTemperature.The temperature ofthe water being supplied to the water heater shall be maintained at58°F± 2°F (14.4°C±1.1°C) throughout the test.

2.4 StorageTank Temperature. The average temperature of the water within the storage tank shall be set to 135°F±5°F (57.2°C±2.8°C).

2.5 Supply WaterPressure. During the test when water isnot being withdrawn, the supply pressure shall be maintained between 40 psig (275 kPa) and the maximum allowable pressure specified by the water heater manufacturer.

2.6 Electrical and/or FossilFuelSupply. 2.6.1 Electrical.Maintain the electrical supply voltage towithin ±1 percent of the center ofthe voltage range specified by the waterheater and/or heat pump manufacturer.

2.6.2 NaturalGas.Maintain the supply pressure in accordance with the manufacturer's specifications. Ifthe supply pressure is not specified, maintain a supply pressure of7 to 10 inches of water column (1.7 Kpa to 2.5 Kpa). Ifthe water heater is equipped with a gas appliance pressure regulator, the regulator outlet pressure shall be within ±10% ofthe manufacturer's specified 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 PropaneGas.Maintain the supply pressure in accordance with the manufacturer's specifications. If the supply pressure is not specified, maintain a supply pressure of 11 to 13 inches ofwater column (2.7 kPa to3.2 kPa). Ifthe water heater is equipped with agas appliance pressure regulator, the regulator outletpressure shall be within ±10% of the manufacturer's specified manifold pressure. Use propane gas with a higher heating value ofapproximately 2,500 Btuper standard cubic foot (93 kJ per standard cubic meter).

2.6.4 FuelOilSupply. Maintain an uninterrupted supply offuel oil. Use fuel oil having a heating value ofapproximately 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 the following values: 

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## 15341

Item measured Instrument accuracy Instrument precision

Gas pressure

....................... ± 0.1 inch of water column (±0.025 kPa)

....................... i 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 AccuracyandPrecision.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)

... 0.1 OF (±0.06 °C). Airwet bulb temperature

................................................................................................................. ± 0.2 F ( 0.1 C)

..... 0.1 F ( 0.06 C). Inlet and outlet water temperatures

.......................................................................................... 0.2 F ( 0.1 C)

..... ± 0.1 F ( 0.06 C). Storage tank temperatures

............................................................................................................. 0.5 F ( 0.3 C)

..... ± 0.25 F (±0.14 C).

3.2.3 ScaleDivision.In no case shall the smallest scale division ofthe 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 ofthe following:
a. A thermopile b. Calibrated resistance thermometers

c. Precision thermometers d. Calibrated thermistors

e. Calibrated thermocouple f. Quartz thermometers

3.2.5 ThermopileConstruction.Ifa 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 Time Constant. The time constantof the instruments usedto measure the inlet and outletwater temperatures shall be no greater than 5 seconds.

3.3 LiquidFlowMeasurements.The accuracy ofthe liquid flow rate measurement, using the calibration if furnished, shall be equal to or less than± 1% ofthe 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±1% of the reading.

3.5 FossilFuels.The quantity offuel used by the water heater shall be measured with

an instrument and associated readout device that is accurate within ±1% ofthe reading.

3.6 MassMeasurements.For mass measurements greater than or equal to 10 pounds (4.5 kg), a scale that is accurate within ±1.0% ofthe 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 ±0.1 pound (±0.045kg).

3.7 Heating Value.The higher heating value ofthe natural gas,propane, or fuel oil shall be measured with an instrument and associated readout device that is accurate within ±1% ofthe reading. The heating value ofnatural gas and propane mustbe corrected for local temperature and pressure conditions. 3.8 Time. The elapsed time measurements shall be measured with an instrument that isaccurate within ±0.5 seconds per hour.

4. Installation

4.1 WaterHeater Mounting. A water heater designed to be free standing shall be installed according to the manufacturer's directions ona 3/4 inch (2 cm) thick plywood platform supported bythree 2x4 inch (5 cmxO0 cm)runners. Ifthe 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 madewith astorage 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. Ifinstallation materials are not provided bythe heat pump manufacturer,

use uninsulated 8 foot (2.4 m) long connecting hoses, having aninside diameter of5/s 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 (5x10 centimeter) studs. Placement in the test room shall be in an area protected from drafts.

4.2 WaterSupply.The water supply shall be capable of delivering water at conditions

as specified in sections 2.3 and 2.5.

4.3 WaterInletandOutletConfiguration. Inlet and outlet piping connections shall be configured as illustrated in Figures 1,2, or 3. Forwater 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 4a and 4b. Type "L" hard copper tubing, the

same size as the connections on the water heater, shall be connected tothe tank and extend 24 inches (61 centimeters) in length. Ifan 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 ofthejacket or cabinet, type "L" hard copper tubing shall be used to extend the water line horizontally to the exterior ofthejacket or cabinet. Unions may be used tofacilitate installation and removal ofthe 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 reliefvalve shall be installed on all water heaters at the port specified by the manufacturer. Discharge piping for the relief valve shall be non-metallic. Ifheat traps and/

or piping insulation and/orpressure 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 Fueland/orElectrical Powerand Energy Consumption.Install one or more instruments which measure, as appropriate. the quantity and rate ofelectrical energy and/

orfossil 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 (i.e..compressor, fans, pumps, controls, etc.).

4.5 InternalStorageTank Temperature Measurements.Install sixtemperature measurement sensors inside the waterheater tank with a vertical distance ofat 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 fluepipe walls. If the tank cannot accommodate six temperature sensors and meet the installation requirements specified above, install the maximum number ofsensors 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

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

installed through the reliefvalve opening or the hot wateroutlet, a tee fitting or outlet piping, as applicable, shall be installed as close aspossible to its original location. If the reliefvalve temperature sensor is relocated, and itno 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 shallbe installed on top ofthe tee fitting. Added fittings shall be covered with thermal insulation having an R value between 4 and 8 hr.ft2

.0F/Btu (0.7and 1.4 m2.°C/W).

BILUNG CODE 6450-01-P



### Check 

### To Scaleor

meter pbw 

## Regulator

Figure 1



### Figure 2

Figure 3 

### To Scale or Water meter 

## Watermeier

ToScalb or _ __ 

## 15342

## Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15343



# Figure 4a.



# ToScale or

ReolWaor 

# Water meter

Figure 4b.

BILUNG CODE 6450-01-C

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

4.6 Ambient Temperature.The ambient air temperature shall be measured approximately atthe vertical mid-point of the water heater and approximately 2 feet (60 centimeters) from the surface ofthe water heater. The sensor shall be shielded against radiation.

4.7 InletandOutlet WaterTemperature 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, asapplicable.

4.8 Flow Control.A flow control valve shall be installed toprovide flowas specified in Section 5.

4.9 FlueRequirements. 4.9.1 Gas-FiredWaterHeaters.Establish a natural draft in the following manner. For gas-fired water heaters having a vertically discharging draft hood outlet,a 5-foot (1.5 meter) vertical vent pipe extension having a diameter equal to the largest flue collar size of the draft hood shall be connected to the draft hood outlet.For gas-fired water heaters having a horizontally discharging draft hood outlet, a 90-degree elbow having a diameter equal to the largest flue collar size ofthe draft hood shall be connected to the draft hood outlet. A 5-foot (1.5 meter) length ofvent pipe shall be connected to the elbow and oriented to discharge vertically upward. Directvent gas-fired water heaters shall be installed with venting equipment specified in the manufacturer's instructions using the minimum vertical and horizontal lengths of vent piperecommended by the manufacturer.

4.9.2 Oil-FiredWaterHeaters.Establish a draft atthe flue collar as specified in the manufacturer's literature. Establish the draft byusing a sufficient length ofventpipe connected to the water heater flue outlet and directed vertically upward. Foran 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 ofthe draft hood shall be connected to the draft hood outlet. A length ofvent pipe sufficient toestablish 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 WaterHeaterStorage Tank.The heat pump water heater storage tankto be used for testing a heat pumpwater heater without a tank supplied by the manufacturer shall have a volume of47.0 gallons ±1.0gallon C 180±4 liters with an Energy Factor of0.87±.01 as determined in accordance with Section 6.1.7 with two 4.5 kW heating elements controlled in such a
manner as to prevent both elements from operating simultaneously.

5. TestProcedures

5.1 Storage-TypeWaterHeaters, IncludingHeatPump WaterHeaters.

5.1.1 DeterminationofStorageTank Volume. Determine the storage capacity, Vst, of the water heater under test, in gallons (liters), by subtracting the tare weightmeasured while the lank is empty-from the gross weight ofthe storage tank when completely filled with water (with all air eliminated and line pressure applied as described in section 2.5)and dividing the resulting net weight by the density ofwater. Density shall be evaluated based on the temperature ofthe stored water.

5.1.2 Setting the Thermostat fora ThermostaticallyOperatedWaterHeater. Starting with a tank ofsupply water, initiate normal operation ofthe water heater. After cutout, determine the mean tank temperature (based on all ofthe 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 135°F±5°F (57.2°C±2.8°C). Ifnot. turn offthe water heater, adjust the thermostat, and refill the tank with supply water. Then, initiate normal operation of the water heater, and once again determine the maximum mean tank temperature after cutout. Repeat this sequence until the maximum

mean tank temperature after cut-out is within the range of 135°F±5°F (57.2°C±2.8°C).

Ifan electric water heater has two or more thermostats, the thermostat that controls the upper-most heating element shall be set first toyield a maximum water temperature of 135°F±5°F (57.2°C±2.8°C), 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 watertemperature of 135°F±5°F (57.2°C±2.8°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 usingall the in-tank sensors. shall be within 135°F±5°F (57.2°C±2.8°C). 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 heatpump water heaters, which control an auxiliary resistance element, the thermostat shall be set in accordance with the manufacturer's installation instructions.

5.1.3 PowerInputDetermination.For all waterheaters except electric types having immersed heating elements. initiate normal operation and determine the power input, P, to the mainburners (including pilot light' power, ifany) after 15 minutes ofoperation. If the water heater is equipped with a gas appliance pressure regulator, the regulator outlet pressure shall be setwithin ±10% of that recommended by the manufacturer. For oil-fired waterheaters the fuel pump pressure shall be within ±10% of the manufacturer's specified pumppressure. All burners shall be adjusted to achieve an hourly Btu (kJ) rating that is within ±2% of the value specified by the manufacturer. For

an 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 in the flue may not exceed No. 1smoke as measured by the procedure in ASTM-D-2156-80.

5.1.4 First HourRatingTest. 5.1.4.1 General.During hot water draws,

remove water ata rate of3.00±0.25 gallons per minute (11.4±0.95 liters per minute) for units with rated storage capacities of20 gallons (76liters) or more and 1.0±0.25 gallons per minute (3.8±0.95 liters per minute) for unitswith rated storage 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 ofeach draw. Alternatively, a water meter may be used to directly measure the water volume(s) withdrawn.

5.1.4.2 DrawInitiationCriterion. Begin the first hour rating testby imposing a draw on the storage-type water heater. After completion ofthis first draw, initiate successive draws based on the following criteria. Forgas- and oil-fired water heaters, initiate successive draws when the thermostat actsto reduce the supply offuel to the main 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 supplied to the element(s). For electric water heaters having
two or moreelements that do not operate simultaneously, initiate successive draws when the applicable thermostat acts to reduce the electrical input to the element located vertically highest in the storage tank. For heat pump water heaters that do not use supplemental resistive heating, initiate successive draws immediately after the electrical input to the compressor is reduced by the action of the water heater's thermostat. For heat pump water heaters that do use supplemental resistive heating, initiate successive draws immediately after the electrical input to the compressor or the uppermost resistive element isreduced by the action oftheapplicable water heater thermostat. This draw initiation criterion for heat pumpwater heaters thatuse supplemental resistive heating, however, shall only apply when the water located above the thermostat at cut-out is heated to 135°F ±5°F (57.2°C±2.8°C).

5.1.4.3 TestSequence. Establish normal water heater operation. Ifthe water heater is notpresently operating, initiate a draw. The 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 4.5 every minute. For each set of measurements, calculate the mean tank temperature. Ifany of these mean values are 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.

Initiate a draw after a maximum mean tank temperature has been observed following cutout. Record the time when the draw is initiated and designate it as an elapsed time ofzero, (t' = 0). The superscript *is used to denote variables pertaining to the first hour rating test.Record the outlet water temperature beginning 15 seconds after the draw is initiated and at 5 second intervals thereafter, until the draw is terminated. Determine the maximum outlet temperature that occurs during this first draw and record 

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

it as T'ma,,i. For the duration ofthis first draw and all successive draws, in addition. monitorthe inlet temperature to the water heater to assure that the required 58°F±2°F (14.4°C ± 1.1°C) test condition is met. Terminate the hotwater draw when the outlet temperature decreases toT',max,

- 25°F (T'm,,i

- 13.9°C). Record this temperature as T'min,

. Following draw termination, determine the average outlet
water temperature and the mass orvolume removed during this first draw and record them as T'del,1 and M* 1 or V*, respectively. Initiate a second and, ifapplicable. successive draws each time the applicable draw initiation criterion described in section 5,1.4.2 is satisfied. As required for the first draw. record the outletwater temperature beginning 15 seconds after initiating each draw and at 5 second intervals thereafter until the draw is terminated. Determine the maximum outlet temperature that occurs during each draw and record it as T'max,i. where irefers to the draw number. Terminate each hotwater draw when the outlet temperature decreases to T,*x.i

- 25°F (T'ma,i

- 13.9°C). Record this temperature as T*min,i. Calculate and record the average outlet temperature and the mass or volume removed during each draw (T'deli and M*i or V'i). Continue this sequence ofdraw and recovery until one hour has elapsed, atwhich time the electrical power and/or the fuel supplied tothe water heater shall be disconnected and/or terminated.

Ifa draw is occurring at anelapsed time of one hour, continue this draw until the outlet temperature decreases to T'max.n

- 25°F (T',axn

- 13.9°C), at which time the draw shall be immediately terminated. The subscript nshall be used to denote quantities associated with the final draw. Ifa draw is not occurring at an elapsed time ofone hour,

a final draw shall be imposed atone 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 (T*minn-). For cases where the outlet temperature is close toTmi-,i. the final draw shall proceed for a minimum of30 seconds. If anoutlet temperature greater than T'min,n- 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..Mn = 0 or V'

= 0). Once the final draw is terminated, calculate and record the average outlet temperature and the mass or volume removed during the draw (Tdenand M*n or 

### Vn).

5.1.5 24-HourSimulated Use Test. During the simulated use test, a total of64.3 ±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 (76liters) but greater than orequal to 10gallons (38 liters),

a total of24±0.5 gallon (91±1.9 liters) shall be removed; and ifthe rated storage tank volume is less than 10gallons (38 liters), a total of9±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, fill the
water heater with supply water and apply pressure as described in section 2.5. Turn on the water heater and associated heatpump unit, ifpresent. After the cutout occurs,
measure the mean tank temperature using the temperature sensors described in section 4.5 every minute until the maximum mean storage tank temperature is achieved. Ifthis 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 may be operated forup to three cycles of drawing until cut-in and then operating until cut-out, prior tothe start of the test.

At this time, record the mean tank temperature (To), and the electrical and/or fuel measurement readings, as appropriate. Begin the 24-hour simulated use test by withdrawing avolume from the water heater thatequals one-sixth of the dailyhot water usage. Record the time when this first draw is initiated and assign it as the test elapsed time (X) ofzero. Record theaverage 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 ofone. two, three, four, and five hours from T=0, initiate additional draws removing an amount ofwater equivalent to one-sixth of the dailyhot waterusage with the maximum allowable deviation for any single drawbeing ±0.5 gallons (±1.9liters) for units having rated storage capacities of20 gallons (76 liters)or greater, and ±0.1 gallons (0.4 liters) for units having rated storage capacities less than 20 gallons (76liters). The quantity of
water withdrawn during the sixth draw shall be increased or decreased as necessary such thatthe total volume ofwater withdrawn equals: 64.3±1.0 gallons (243.4±3.8 liters) for
waterheaters havingrated storage capacities of20 gallons (76liters) or more, 24±0.5 gallons (90.8±1.9 liters) for water heaters havingrated storage capacities less than 20 gallons (76 liters) butgreater than orequal to 10 gallons (38liters), and 9.0±0.5 gallons (34.1±1.9 liters) for water heaters having rated storage capacities less than 10 gallons (38 liters).

All draws during the simulated use test shall be made atflow rates of3.0±0.25 gallons per minute (11.4±0.95 liters per minute) when testing water heaters having rated storage capacities of 20 gallons (76 liters) or more. For waterheaters havingrated storage capacities less than 20 gallons (76 liters), flowrates of 1.0±0.25 gallons per minute (3.8±0.95 liters perminutes) shall be achieved. Measurements ofthe 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 ofeach draw. The arithmetic mean ofthe hot water discharge temperature and the cold water inlet temperature shall be determined for each draw (Tdei,i and Tini). Determine and record the net mass or volume removed (Mi or Vi),

as appropriate, after each draw.

At the end ofthe recovery period following the first draw, record the maximum mean tank temperature observed after cut-out. Tma.l,,, 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, ifapplicable, by the resistive element(s) during the first recovery shall be recorded as Qr.In addition. the total operating time ofthe compressor during the first recovery shall be determined and recorded as

### Tp,,,l.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. Qresl.

Atthe end ofthe recovery period that follows the sixth draw, determine and record the total electrical energy and/or fossil-fuel consumed since the beginning ofthe test, Qsu. Inpreparation for determining 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 of the mean tank temperature after cutout as Tsu. Except as notedbelow, allow the water heater to remain in the standby mode until 24-hours have elapsed from the start ofthe test, i.e., since T= 0. Prevent the water heater from beginning a recovery cycle duringthe last hour ofthe testby turning offthe electric power to the electrical heating elements and heat pump, ifpresent, or byturning down the fuel supply to the main burner at an elapsed time of23 hours. Ifa recovery is taking place
at an elapsed time of23 hours. wait until the recovery is complete before reducing 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 interval between the time at which the maximum mean tank temperature is observed after the sixth draw and the end ofthe 24- hour testas tstby,i. Record the time during which water was notbeing withdrawn from the water heater during the entire 24-hour period as Tsby.

5.2 InstantaneousWaterHeaters. 5.2.1 Settingthe OutletDischarge Temperature.Initiate normal operation ofthe
water heater at the full input rating. Monitor the discharge watertemperature and set toa value of 1350F±5 0F (57.2°C±2.8°C) in accordance with the manufacturer's instructions. Ifthe water heater is not capable ofproviding this discharge temperature when the flow rate is 3.00±0.25 gallons per minute (11.4±0.95 liters per minute), then adjust the flow rate as necessary to achieve the specified discharge water temperature. Record the corresponding flow rate as Vma.

Ifthe instantaneous water heater incorporates a controller that permits continuous burner orelectric heating element operation at a reduced input rate, adjust the flowrate as necessary to achieve a discharge
water temperature of 135°F±5°F (57.2°C±2.8°C) while maintaining the minimum input rate. Record the corresponding flow rate as V,in. Ifan outlet temperature of 135°±5°F (57.2°C±2.8°C)
cannot be achieved at the minimum flow rate 

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permitted by the instantaneous water heater, record the flow rate as Vmmi and the corresponding outlet temperature as Tmrn.

25.2.2 PowerInputDetermination.Gasfired and oil-fired instantaneous water heaters shall have the burners adjusted to the maximum firing rate specified by the manufacturer.

5.2.3 First Hour RatingTestfor InstantaneousWaterHeaters.Establish normal water heater operation at the maximum input rate with the discharge
water temperature set in accordance with section 5.2.1. During the test, do notinterrupt the electrical energy or fossil fuel supplied to the water heater. During the one hour test, eithercollect the withdrawn water for later measuring the total mass removed, or alternatively, use a water meter to directly

measure the.water volume removed.

Begin with the water flow rate temporarily discontinued. Record the scale or water meter reading as appropriate. Initiate a draw andrecord the corresponding time. Record the inlet and outlet water temperatures beginning 15 seconds after the draw is initiated and at every subsequent 5 second interval throughout the duration ofthe draw. At the end ofone hourterminate the draw. Determine the mass ofwater withdrawn, MFR. in pounds (kilograms). or the volume ofwater withdrawn, VFHR, in gallons (liters) with an error no greater than 2 percent.

5.2.4 24-HourSimulatedUse Test 5.2.4.1 FixedInputInstantaneous Water Heaters.Establish normal operation with the discharge water temperature and flow rate set to values of 135°F±5°F (57.2°C±2.8°C) and Vm,. respectively. With no draw occurring, record the reading given by the gas meter, the scale used for determining oil consumption, and/or the electrical energy meter as appropriate. Begin the 24-hour simulated use test by drawing an amount of water out ofthe
water heater equivalent to one-sixth of the daily hotwater usage, 64.3 gallons (243 liters). Record the time when this first draw is initiated and designated it as an elapsed time, 

### -, of0. At elapsed time intervals ofone, two, three, four. and five hours from r =0, initiate additional draws removing an amount ofwater equivalent to one-sixth of 64.3 gallons (243 liters), with the maximum allowable deviation for any single draw being ±0.5 gallons (±2liters). The quantity ofwater drawn 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 liters).

Measurements ofthe inlet and outlet water temperatures shall be made beginning 15 seconds after the draw is initiated and at every 5 second interval throughout the duration ofthe draw. The arithmetic mean of the hotwater discharge temperature and the cold water inlettemperature shall be determined for each draw. Record the scale used to measure the mass ofthewithdrawn
water orthe water meter reading, as appropriate, after each draw. At the end of the recovery period following the first draw, determine and record the fossil fuel or electrical energy consumed. Qr. Following the sixth draw and subsequent recovery, allow the water heater to remain in the standby mode until exactly 24 hours have elapsed since thestart ofthe test, i.e., since T= 0. At 24 hours, record the reading given bythe gas meter, the scale used for determining oil consumption, and/or the electrical energy meter as appropriate. Determine the fossil fuel or electrical energy consumed during the entire 24-hour simulated usetest and designate the quantity

as Q.

5.2.4.2 VariableInputInstantaneous WaterHeaters. Ifthe instantaneous water heater incorporates a controller that permits continuous operation at a reduced input rate, the first three draws shall be conducted using the maximum flow rate, Vmn,while removing an amount ofwater equivalent to one-sixth of64.3 gallons (243 liters), with the maximum allowable deviation for any one of the three draws being ±0.5 gallons (2 liters). The second three draws shallbe 'conducted
at Vin. Ifanoutlet temperature of 135°F±5°F (57.2°C±2.8°C) could not be achieved at the minimum flow rate permitted by the instantaneous water heater, the last three draws should be lengthened such that the volume removed is:



### V 64.3 gal F 

### 77 0

### F V4,5,6 6 [(Tm -58oF)]

or



### 243L 42.8° C

' 6 

### (Tmin- 14.4°C)

where the maximum allowable variation for any one ofthe three draws is ±0.5 gallons (2 liters). The quantity ofwater withdrawn during thesixth draw shall be Increased or decreased as necessary such thatthe total volume ofwater withdrawn equals (32.15+3xV4,s,6)±l.0gallons ((121.7+3xV4.5,6)±3.8 liters).

Measurements of the inlet and outlet water temperatures shall be made beginning 15 seconds after a draw isinitiated and at every 5 second interval throughout the duration of the draw. Determine the arithmetic mean of the hot water discharge temperature and the cold water Inlet temperature for each draw. Record the scale used to measure the mass of the withdrawn water or the water meter reading, as appropriate, after each draw. At the end of the recovery period following the first draw, determine and record the fossil fuel or electrical energy consumed. Qr,m. Likewise, record the reading of the meter or scale used tomeasure fossil fuel or electrical energy consumption prior to the fourth draw and at the end of the recovery period following the fourth draw, and designate the difference as Qr,mn. Following the sixth draw and subsequent recovery, allow the water heater to remain in thestandby mode until exactly 24 hours have elapsed since the start ofthe test, i.e., since T= 0. At 24 hours, record the reading given by the gas meter, the scale used for determining oil consumption. and/or the electrical energy meter. as appropriate. Determine the fossil fuel or electrical energy consumed during the entire 24-hour simulated use testand designate the quantity as Q. 6. Computations
6.1 Storage TankandHeatPumpWater Heaters.

6.1.1 Storage Tank Capacity.The storage tank capacity is computed using the following: 

# (w,-w,)

Vst = 

## p Where: Vsg=the storage capacity of the water heater. gal (L). Wf=the weight ofthe storage tank when completely filled with water, Ibm (kg). Wt=the (tare)weight of the storage tank when completely empty, Ibn (kg) p=the density ofwater use to fill the tank; evaluated based on the temperature of the water, Ibm/gal (kg/L).
6.1.2 First HourRatingComputation.For water heaters where the final draw was initiated at orprior to an elapsed time ofone hour, the first hour rating shall be computed using,

n 

# Fh = Vi

i=l Where: n=the number ofdraws that are completed during the first hour ratingtest. V*i=the volume of water removed during the ith draw of the first hour rating test, gal (L).



## p P
Where:
M*i=the mass ofwater removed duringthe ith draw of the first hour rating test.lb (kg). p=the water density corresponding to the average outlet temperature measured during the ith draw (T*dai). Ib,/gal (kg/ L). For water heaters where a draw was notin progress at the elapsed time ofone hour and

a final draw was imposed at the elapsed time ofone hour. the first hour rating shall be calculated using.

I * (-' F 

### F,=n:V :+V

_ T 

### T T

= 

### , T V delr tniie,n- Tin

where n and V*i are the same quantities as defined above and. T*dd,- I=the average water outlet temperature measured during the (n- I)th draw of the first hour rating test, °F (°C). T*ddi,=the average water outlet temperature measured during the nth (final) draw of the first hour rating test, °F (°C). T*minn- =the minimum water outlet temperature measured during the (n- l)th draw of the first hour rating test, °F (°C). 

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6.1.3 RecoveryEfficiency.The recovery efficiency for gas, oil, and heat pump storage type water heaters is computed as:

MiCpl(Tdel i-Tn,)

+ 

### Qr

V.tP 2

### Cp2(Tr max,l-To)

Qr Where:
M1 =total mass removed during the first draw

of the 24-hour simulated use test,Ibm (kg). =VI x p, Vi=total volume removed during the first draw ofthe 24-hour simulated use test, gal (L). pi=density ofthe water as evaluated atthe water temperature at the point where the flowvolume is measured, Ibm/gal (kg/L). Cpi=specific heat ofthe withdrawn water as

- evaluated at (TdaCi, +Tin, 1 )/2 Btu/lbmn°F (kJ/kg.K). Tde.,l=average water outlet temperature measured during the first draw of the 24- hour simulated use test,°F (°C). Tim,=average water inlet temperature measured during the first draw ofthe 24- hour simulated use test,°F (°C). Vs,=measured volume ofthe storage tank, as determined in section 6.1.1, gal (L).
p

2=density ofstored hot water evaluated at imn, I+To)/2, lbm/gal (kg/L). Cp2=speciflc heat of stored hot water evaluated at (Tml+1iTo)/2, Btu/lbmn°F (kJ/ kg.K). Tm,.,=maximum mean tank temperature recorded after cut-out following the first draw ofthe 24-hour simulated use test, °F (°C). To=maximum mean tank temperature recorded prior to the first draw ofthe 24- hour simulated use test. °F (°C). Qreai=electrical energy used by the supplemental resistive elements ofa heat pump water heater during the first recovery of the 24-hour simulated use test, Wh. tcnp,=the total operating time ofthe compressor ofa heat pump water heater during the first recovery of the 24-hour simulated use test, hr. Qr=the total energy usedby the water heater between cut-out. priorto the first draw and cutout following the first draw, including auxiliary energy such aspilot lights, pumps, fans, etc., Btu (MJ). (electrical 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 HourlyStandbyLosses.The hourly standby losses arecomputed as Where:



## Qb V.tPCp(T2-Tsu)
Tstby

stby,-

Qttr -=---
slby~l Qhr=the hourly standby energy losses ofthe
water heater. Btu/hr (kJ/hr). Q,tby=the total energy consumed bythe water heater between the time atwhich the maximum mean tank temperature is observed afterthe sixth draw and the end ofthe 24-hour testperiod, Btu (kJ). Vs,=measured volume ofthe storage tank, as determined in section 6.1.1. gal (L). p=density of stored hot water as evaluated at. (T

24+T,J/2.lbm/gal (kg/L). Cp=speciflc heat of the stored water as evaluated at (T 24+Tsu)/2, Btu/lbm.°F (kJ/ kg.°C). T

24=the mean tank temperature at the end of the 24-hour simulated use test, °F (°C). Tu=maximum mean tank temperature observed after the sixth draw. °F (°C). tsby,i=elapsed time between the time at which the maximum mean tank temperature is observed after the sixth draw and the end ofthe 24-hour simulated use test, hr. The standby heat loss coefficientfor the tank is computed as:

UA =
- Q hr
Tt,stby a,stby Where: Qhi-defined in section 6.1.4. Tt,tby=overall average storage tank temperature between the time when the maximum mean tank temperature is observed after the sixth draw and the end ofthe 24-hour simulated use test, °F (°C). T.,,,by=overall average ambient temperature between the time when the maximum

mean tank temperature is observed after the sixth draw and the end ofthe 24- hour simulated use test, °F (°C). UA=standby heatloss coefficient of the storage tank, Btu/hr.°F (kJ/hr.°C). 6.1.5 Daily WaterHeatingEnergy Consumption. The daily water heating energy consumption, Qd iscomputed as:

d =Q7r

Where: Q=total energy used by the water heater during the 24-hour simulated use test including auxiliary energy such aspilot lights, pumps, fans, etc.. Btu (kJ) (Electrical auxiliary energy shall be convertedto thermal energy using the following conversion: 1kWh = 3412 Btu). Vn=measured volume of thestorage tank. as determined in section 6.1.1, gal (L). p=density ofthe stored hot water as evaluated at (T 24+To)/2, Ibm,/gal (kg/L). Cp=specific heat ofthe stored water as evaluated at (T 24+To)/2. Btu/lb,,,.°F (kJ/ kg.Oc. T

24=mean tank temperature at the end ofthe 24-hour simulated use test. °F (°C). To=mean tank temperature at the beginning ofthe 24-hour simulated use test. recorded one minute before the first draw is initiated, °F (°C). tlr=recovery efficiency of the hot water heater, dimensionless. 6.1.6 AdjustedDailyWaterHeating EnergyConsumption.The adjusted daily water heating energy consumption. Qdntakes into account that the temperature difference between the storage tank and surrounding ambient temperature may not be the nominal value of 67.5°F (1350F-67.5 0F) 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 0 C), and the 5°F (2.8°C)allowable variation in surrounding ambient temperature 65°F (18.30C) to70 0F (21.1°C). The adjusted daily water heating energy consumption is computed as:

Qda = Qd - (Tstby

- Ta,stby)


### (135 °F-67.5 °F)]UATStby2

or Qda = Qd -[(Ty -T,stby)



### (57.2 °C-19.7 0

### C)]UAstby,2

Where: Qda=the adjusted daily water heating energy consumption, in Btu (kJ). T,by,=the mean tank temperature during the total standby portion, Tstby.2, ofthe 24- hourtest, in °F (°C). T,totby=the average ambient temperature during the total standby portion, Tsty.2 ofthe 24-hour test. in °F (°C). UA=the standby heat losscoefficient for the storage tank, in Btu/hr.°F (kJ/hr.°C). ttby,2=the number of hours during the 24- hour simulated test whenwater was not being withdrawn from the waterheater. A modification is also needed to take into account thatthe temperature difference between theoutlet water temperature and supply water temperature may notbe equivalent to the nominal value of77°F (135°F-58°F) or 42.8°C (57.2°C- 14.40 C). The following equations adjust the experimental data to a nominal 770F (42.8 0C) temperature rise.

The energy used to heat water. Btu/day (kJ/ day) may be computed as:

6 M.C,.(Tdel, -T n, i) HW(= i=t 77r Where: Mi=the mass withdrawn for the ith draw (i=l
to 6). in Ibm (kg). Cpi=the specific heat ofwater, in Btu/lbmOF (kJ/kg.°C). 

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Tdeii=the average water outlet temperature measured duringthe ith draw (i=1 to 6). °F(°C). Ti..i=the average water inlet temperature measured during the ith draw (i=1 to 6). °F(oC). T1=as defined in section 6.1.3.

The energy required to heat the same quantity ofwater over a 77°F (42.8°C) temperature rise. Btu/day (kJ/day). is:

QHW, 77°F =

6 MiCpi (135°F-58°F)

i=l /7r

or QHW, 42.8°C =



### 6 

### MiCpi(57.20C-14.4oC)

i=l 7,r The difference between these two values is:

QHWD = QHW,77F QHW



### or

QHWD = QHW,42.8°C QHW which must be added to the adjusted daily water heating energy consumption value. Thus, the daily energy consumption value which takes into account that the temperature difference between the storage tank and ambient temperature may notbe 67.5°F (37.5°C) and the temperature rise

across the storage tank may notbe 77°F (42.8°C) is:

Qdm = Qda +QHWD

6.1.7 EnergyFactor. The energy factor. Ef, is computed as:

or 

### 6 MiCp(135OF-58OF)

i=l Qdm



### 6 

### MiCp(57.2°C-14.4 0

### C) Ef= Q=m Qdm Where: Qdm=the modified daily water heating energy consumption as computed in accordance with section 6.1.6, in Btu (kJ). Mi=as defined in section 6.1.6. Cpi=as defined in section 6.1.6.

6.1.8 AnnualEnergyConsumption.The annual energy consumption for storage type and heat pump water heaters is computed as:

Eannual = 365 X Qdm
Where: Qdm=the modified daily energy consumption value,Btu/day (kj/day), and 365 is the number ofdays in a year. 6.2 Instantaneous Hot WaterHeaters. 6.2.1 First HourRating Computation. Compute the first hour rating as: Fh R(Tderl 1 n) 

### p(135°F-58°F)

MFHR (TdelT in)

or Fhr= 

### p(57.2°C- 14.4°C)

which may be expressed as:

MFHR(Tdel -in) 

### p(77°F)

orFh = FHR(Tdel in) 

### p(42.8° C)

Where:
MFHR=the mass removed during the one hour continuous draw. in Ibm (kg). Tdcl=the average delivery temperature, in °F (°C). Tin=the average inlet temperature, in °F (°C). p=the density ofwater atthe average delivery temperature. in Ibm/gal (kg/L). Ifa water meter is used in lieu ofa scale the first hourrating is computed as:



### (Tdel

- 

## i.)

h r 77°F

or Fhr = 

## -T.n) 42.8°C Where:
V=the volume ofwater removed during the

one hour continuous draw. in gallons (liters). Tdie=defined in section 6.2.1. Ti=defined in section 6.2.1.

6.2.2, Recovery Efficiency 6.2.2.1 Fixed nput nsantaneousWater Heaters.The recovery efficiency is computed

as:

MICpl(Tdel, -Tin, ) 7, = Qr Where:

Ml=the mass withdrawn during the first draw ofthe 24-hour simulated use test, Ibm (kg).

Cpi=the specific heat ofwater at the average temperature (Tde.l+Tin.)/2, Btu/ lbm-°F (kJ/kg.°C).

Tdel,,=the average temperature for the first draw, °F (°C).

Ti,,,=the average inlet temperature for the first draw, °F (°C).

Qr=the total energy used bythe water heater between cutoutprior tothe first draw and cut-out following thefirst draw, including auxiliary energy such aspilot lights, pumps, fans, etc., Btu (kj).

6.2.2.2. VariableInputInstantaneous WaterHeaters.For instantaneous water heaters which have a variable firing rate, two recovery efficiency values are computed, one at the maximum input rate and one at the minimum 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:

, M,Cp,(TdeI,-Tinl)

Qr,max Where: Ml=defined in section 6.2.2.1. Cpl=defined in section 6.2.2.1. Tdi, =defined in section 6.2.2.1. 

### Tmi,,=defined in section 6.2.2.1. Qr.max=the total energy used bythe water heater between cut-out prior to the first draw and cut-out following the first draw, including auxiliary energy such as pilot lights, Btu (kJ). The minimum recovery efficiency is computed as:

M4Cp4(Tdel,4-Tin,4) Ttr,min = 

### Qr,min
Where:
M

4=the mass withdrawn during the fourth

draw, in Ibmn (kg). Cp4=the specific heat ofwater, in Btu/lbm.°F (kJ/kg.°C). Ti,,4=the average delivery temperature for the fourth draw, in °F (°C). Ti,,4=the average inlet temperature for the fourthdraw, in IF (°C). Qr,min=the total energy consumed immediately prior to the fourth draw and cut-out following the fourth draw, including auxiliary energy such as pilot lights. in Btu (kJ). The recovery efficiency is computed as:

lr,max +17r,min

2 Where: llr,m.x=defined in section 6.2.2.2. Tlrmi.=defined in section 6.2.2.2.

6.2.3 DailyWaterHeating Energy Consumption.The daily water heating energy consumption, Qd is computed as: Qd=Q Where: Q=the energy used by the flow actuated
water heater during the 24-hour simulated use test. A modification is needed to take into
account thatthe temperature difference between the outlet water temperature and supply water temperature may notbe equivalent to the nominal value of77°F (135°F-58°F)or 42.8°C (57.2°C- 14.4°C). The following equations adjust the experimental data to a nominal 77°F (42.8°C) temperature rise.

The energy used toheat water may be computed as:

6 MiC (Tdl,i -Tin,i) QHWr= i=l 7r Where: 

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Mi=the masswithdrawn during the ith draw. in Ibm (kg). Cpi=the specific heat ofwater of the ith draw. in Btu/lbmlF(kJ/kg.°C).
Tdeii=the average delivery temperature of the ith draw, in °F(°C). Tl,i=the average inlet temperature ofthe ith draw, in °F(°C). Tlrdefined in section 6.2.2.2.

The energy required to heat the same quantity of water over a 77°F (42.8°C) temperature rise is:

QHW,77oF = 

### 6MiCp (135°F-58°F)

i=l 77r

or QHW,42.8°C = 

### 6 MCpi(57.2° C-14.4°C)

· i=l 

### O7r
Where:
Mi=defined above. Cpi=defined above. ir=defined in above.

The difference between these two values is:

QHWD = QHW,77°F QHW

or QHWD = QHW,42.8°C

- 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 notbe 77°F (42.8 0 C) is:

Qdm= Qd + QHWD
6.2.4 EnergyFactor.The energy factor, Er. is computed as:

6 

### MiCpi(135°F-58°F) E f 

### = -

i=l Qdm



### 6 

### MCpi(57.2C-14.4 0 

### C)

or Ef,=
i=l Qdm Where: Qdm=the daily water heating energy consumption as computed in accordance with Section 6.2.3, in Btu (kJ). Mi=the mass associated with the ith draw, in Ibm (kg). Cpi=the specific heat ofwater computed at a temperature of(58°F+135°F)/2, Btu/ lbm.°F [(14.4°C+57.2°C)/2, kJ/kg. C]. Tdel,i=the average delivery temperature ofthe ith draw, in °F(°C). Tuh,i=the average inlet temperature of the ith draw, in °F(°C).
6.2.5 AnnualEnergy Consumption.The annual energy consumption for instantaneous type water heaters is computed

as:



### Eanual =365 x Qd Where: Qd,=the modified daily energy consumption. in Btu/day (kJ/day) and 365 is the number ofdays within a year.
7.Ratings for Untested Models
In orderto relieve the testburden to manufacturers who offer water heaters which differ only in fuel type orpower input, ratings for untested models maybe established in accordance with the following procedures. In lieu of the following procedures amanufacturer may elect to test the unitfor which a rating is sought.

7.1 Gas Water Heaters.Ratings obtained forgas 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 WaterHeaters 7.2.1 First HourRating.Ifan 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 onlybe tested with heating elements at the designated standard input ratings. The first hour ratings for units having power input 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 thestandard input rating. For units havingpower 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 EnergyFactor. The energy factorfor identical electric storage type waterheaters. with the exception ofheating element wattage, may use the energy factor obtained during testing ofthe water heater with the designated standard input rating.

5. Appendix I to subpart B ofpart 430 is revised to read as follows: 

### Appendix Ito Subpart Bof Part430- Uniform Test Method forMeasuring the Energy Consumption of Conventional Ranges, Conventional Cooking Tops, Conventional Ovens, andMicrowave 

### Ovens

1.Definitions

1.1 Built-inmeans the productis supported by surrounding cabinetry, walls,

or other similar structures.

1.2 Drop-inmeans the product is supported by horizontal surface cabinetry.

1.3 Forcedconvectionmeans a mode of conventional 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 IEC 705refers 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 705. Amendment 2-1993.

1.6 Normalnonoperatingtemperature

means the temperature of all areas ofan appliance to be tested thatis within 5 degrees (2.8°C) of the temperature that the identical

areas of the samebasic model ofthe appliance would attain ifit remained in the
testroom for 24 hours while not operating with all oven doors closed and with any gas pilotlights on and adjusted in accordance with manufacturer's instructions.

1.7 Primary energyconsumptionmeans either the electrical energy consumption ofa conventional electric oven or the gas energy consumption ofa conventional gas oven.

1.8 Secondaryenergy consumption

means any electrical energy consumption, other than clock energy consumption, ofa conventional gas oven.

1.9 Standard cubicfoot (L) ofgasmeans that quantity ofgas that occupies 1cubic foot (L) when saturated with water vapor at a temperature of 60°F (15.6°C) and a pressure of30inches ofmercury (101.6 kPa) (density of mercury equals 13.595 grams percubic centimeter).

1.10 Thermocouplemeans a device consisting of two dissimilar metals which are joined together and, with their associated wires, are used tomeasure temperature by means ofelectromotive force.

2. Test Conditions

2.1 Installation. A free standing appliance shall be installed with the back directly against, or as near aspossible to, a vertical wall which extends atleast 1foot above and

on either side of the appliance. There shall be no side walls. A drop-in, built-in or wallmounted appliance 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 toany other electrical devices or features, except as indicated in section 2.1.3.

2.1.1 Conventionalelectricranges,ovens, andcooking 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 Conventionalgasranges, ovens,and cooking 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 ofnameplate 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 Microwaveovens.Install the microwave oven in accordance with the manufacturer's instructions and connect to _I

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anelectrical supply circuit with voltage as specified in section 2.2.1. A watt 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. Iftrial runs are needed
to set the "on" time for the test, the test measurements are tobe separated according to section 4, Paragraph 12.6 ofIEC 705.

2.2 Energysupply. 2.2.1 Electrical supply.Maintain the electrical supply to the conventional range, conventional cooking top, and conventional

oven beingtested at 240/120 volts except that basic modelsrated only at208/120 volts shall be tested atthat rating. Maintain the voltage within 2 percent of the above specified voltages, except for the microwave oven testing.Maintain the electrical supply to a microwave oven at 120 volts ± 1volt and at 60hertz.

2.2.2 Gassupply. 2.2.2.1 Gasburneradjustments. 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 burner must be adjusted with sufficient air 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 ofall controls ofthe unit under test at 7 to 10 inches of water column (1743.6 to 2490.8 Pa). The regulator outlet pressure shall equal the manufacturer's recommendation. The natural gas supplied should have a heating value ofapproximately 1,025 Btu's per standard cubic foot (38.2 kJ/ L). The actual gross heating value, Hn, in Btu's per standard cubic foot (kJ/L), 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 thatmeet the requirements described in section 2.9.4 orby 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 or for testing appliances which are designed to operate using only LP-gas, maintain the propane pressure immediately ahead ofall controls of the unit under test at 11 to 13 inches of water column (2740 to 3238 Pa). The regulator outletpressure shall equal the manufacturer's recommendation. The propane supplied should have a heating value ofapproximately 2.500 Btu's per standard cubic foot (93.15 kJ/L). The actual gross heating value, Hp, in Btu's per standard cubic foot (kJ/L), for the propane to be used in the test shall be obtained either from
measurements made by the manufacturer conducting the testusing equipment that meet the requirements described in section 2.9.4 orby the use ofbottled propane whose gross heating value is certified to be atleast

as accurate a value that meet the requirements described in section 2.9.4.

2.2.2.4 Testgas.A basic model ofa convertible cooking appliance shall be tested with natural gas, but may also be tested with propane. Anybasic model ofa conventional range, conventional cooking top,or conventional oven which is designed to operate using only natural gas as the energy
source must be tested with natural gas. Any basic model ofa conventional range, conventional cooking top, or conventional

oven which is designed to operate using only LP gas as the gas energy source must be tested with propane gas.

2.3 Aircirculation.Maintain air circulation in the room sufficient to secure a reasonably uniform temperature distribution. but do not cause a direct draft on the unit under test.

2.4 Settingtheconventionaloven thermostat.

2.4.1 Conventionalelectricoven. Install a thermocouple approximately in the center of the usable baking space. Provide a temperature indicator system formeasuring the oven's temperature with an accuracy as indicated in section 2.9.3.2. Ifthe oven thermostat does not cycle onand off, adjust

or determine the conventional electric oven thermostat setting to provide an average internal temperature which is 325°±5°F (162.80±2.8°C) higher than the room ambient air temperature. Ifthe 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 (162.8°±2.8°C) higher than the room ambient air temperature. This shall be done by measuring the maximum and minimum temperatures in any three consecutive cutoff/cut-on actions ofthe electric resistance heaters, excluding the initial cut-off/cut-on action,by the thermostat after the temperature rise of325°±5°F (162.8°±2.8°C) has been attained by the conventional electric oven. Remove the thermocouple after the thermostat has been set.

2.4.2 Conventional gasoven. Install five parallel-connected weighted thermocouples,

onelocated atthe center ofthe conventional gas oven's usable baking space and the other four equally spaced between the center and the corners ofthe conventional gas oven on the diagonals ofa horizontal plane through the center ofthe conventional gas oven. Each weighted thermocouple shall be constructed ofa copper disc thatis 1-inch (25.4 mm) in diameter and '/s-inch (3.2 mm) thick. The two thermocouple wires shall be located in two holes in the disc spaced '/2-inch (12.7 mm) apart, with each hole being located 1/4- inch (6.4 mm) from the center of the disc. Both thermocouple wires shall be silversoldered to the copper disc. Provide a temperature indicator system for measuring the oven's temperature with an accuracy as indicated in section 2.9.3.2. If theoven thermostat does not cycle on or off, adjust or determine the conventional gas oven thermostat setting to provide an average internal temperature which is 325°±5°F (162.80 ±2.8°C) higher thanthe room ambient air temperature. Ifthe oven thermostat operates by cycling on and off, adjust or determine the conventional gas oven thermostat setting to provide an average internal temperature which is 325°±5°F (162.8±2.8°C) higher than the room ambient airtemperature. This shall be done by measuring the maximum and minimum temperatures in any three consecutive cutoff/cut-on actions of the gasburners. excluding the initial cut-off/cut-on action, by the thermostat after the temperature rise of 325°±5°F (162.8°±2.8°C) has been attained by the conventional gas oven. Remove the thermocouple after the thermostat has been set.

2.5 Ambientroom airtemperature. During the test, maintain an ambient room air temperature, TR, of77°±9°F (25°±5°C) for conventional ovens and cooking tops, or as indicated in section 4, Paragraph 12.4 ofIEC 705 for microwave ovens as measured at least 5 feet (1.5 m) and not more than 8 feet (2.4 m)from the nearest surface ofthe unit under
testand approximately 3 feet (.9 m) above the floor.The temperature shall be measured with a thermometer or temperature indicating system with an accuracy as indicated in section 2.9.3.1.

2.6 Normalnonoperatingtemperature. All areas ofthe appliance to be tested shall attain the normal nonoperating temperature,

as defined in section 1.6, before any testing begins. The equipment for measuring the applicable normal nonoperating temperature shall be as described in sections 2.9.3.1, 2.9.3.2, 2.9.3.4, and 2.9.3.5, as applicable.

2.7 Test blocksforconventionaloven and cookingtop.The test blocks shall be made of aluminum alloy No. 6061. with a specific heatof0.23 Btu/lb-°F (0.96 kJ/[kg°C]) and with any temper that will give a coefficient of thermal conductivity of2.6to 2.8 BTU-in/ in-ft2-°F (154.8 to 171.5 W/[m°C]). Each block shall have a hole at itstop. The hole shall be 0.08 inch (2.03 mm) in diameter and 0.80 inch (20.3 mm) deep. The manufacturer conducting the test may provide other means which will ensure that the thermocouple junction is installed at this same position and depth.

The bottom ofeach block shall be flat to within 0.002 inch (0.051 mm) TIR (total indicator reading). Determine the actual weight ofeach testblock with a scale with an accuracy as indicated in section 2.9.5.

2.7.1 Conventionaloven testblock.The
testblock for the conventional oven. Wi. shall be 6.25±0.05 inch (158.8±1.3 mm) in diameter, approximately 2.8 inches (71 mm) high and shall weigh 8.5±0.1 Ibs (3.86±0.05 kg). The block shall be finished with an anodic black coatingwhich hasa minimum thickness of0.001 inch (0.025 mm) or with

a finish having the equivalent absorptivity.

2.7.2 Smalltestblock forconventional cookingtop.The small testblock, W 2,shall be 6.25±0.05 inches (158.8±1.3 mm) in diameter, approximately 2.8 inches (71 mm) high and shall weigh 8.5±0.11bs (3.86±0.05 kg).

2.7.3 Large testblockforconventional cooking top.Thelarge test block for the conventional cooking top, W3, shall be 9±0.05 inches (228.6±1.3 mm) in diameter, approximately 3.0 inches (76mm) high and shall weigh 19±0.1 lbs (8.62±0.05 kg).

2.7.4 Thermocoupleinstallation. Install the thermocouple such that the thermocouple junction (where the thermocouple contacts the testblock) isat the bottom of the hole provided in the testblock and that the thermocouplejunction makes good thermal
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blocks are to be water cooled between tests the thermocouple hole should be sealed, or other steps taken, to insure that the thermocouple hole iscompletely dry at the start of the next test. Provide a temperature ipdicator system for measuring the test block temperature with an accuracy as indicated in section 2.9.3.3.

2.7.5 Initialtestblock temperature. Maintain the initial temperature of the test blocks, TI, within±4°F (±2.2°C) ofthe ambient room airtemperature as specified in section 2.5. Ifthe test block has been cooled (or heated)to bringit to room temperature, allow the block to stabilize forat least 2 minutes after removal from the cooling (or heating) source, before measuring its initial temperature.

2.8 Microwaveoven testload. 2.8.1 Test container. The testcontainer shall be as specified in section 4. Paragraph 12.2 of IEC 705.

2.8.2 Testwaterload. Thetest water load shall be as specified in section 4, Paragraph 12.1 ofIEC 705.

2.8.2.1 Test waterloadandtestcontainer temperature.Before the startof the test, the

oven and the test container shall be at ambient temperature as specified in section 4, Paragraph 12.4 ofIEC 705. The test water load shall be contained in a chiller (not the
testcontainer) and maintained at 18°±1.8°F (10°±1°C) below the ambient room temperature.

2.9 Instrumentation.Perform all test measurements using the following instruments, as appropriate:

2.9.1 Electrical Measurements. 2.9.1.1 Watt-hourmeter.The watt-hour
meter for measuring the electrical energy consumption of conventional ovens and cooking tops shall have a resolution ofat least 1watt-hour (3.6 kJ) and a maximum

error nogreater than 1.5 percent ofthe 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 nogreater 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 ofatleast 0.2 watt (0.2 J/s) and a maximum error no greater than 5 percent ofthe measured value.

2.9.2 GasMeasurements. 2.9.2.1 Positivedisplacement meters.The gas meter to be used for measuring the gas consumed by the gas burners ofthe oven or cooking top shall have a resolution ofatleast 0.01 cubic foot (0.28 L) and a maximum error
no greater than 1percent ofthe measured value. Ifa positive displacement gas meter is used for measuring the gas consumed bythe pilot lights, it shall have a resolution ofat least 0.01 cubic foot (0.28 L) and have a maximum error nogreater than 2 percent of the measured value.

2.9.2.2 Flowmeter. Ifa 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 ofthe measured value and a resolution ofat least 1percent ofthe measured value. 2.9.3 Temperaturemeasurement equipment.

2.9.3.1 Room temperature indicating system.The room temperature indicating system shall be as specified in section 4. Paragraph 12.3 ofIEC 705.

2.9.3.2 Temperatureindicatorsystem for measuringconventionaloven temperature. The equipment for measuring the conventional oven temperature shall have an

error no greater than ±4 0F (±2.2°C) over the range of65° to 500°F (18°C to260°C).

2.9.3.3 Temperature indicatorsystem for measuringtestblock temperature.The system shall have an error nogreater than ±2°F (1. 1°C) when measuring specific temperatures over the range of65°to 330°F (18.3°C to 165.6°C). It shall also have an error no greater than ±2°F (±ll.°C)when measuring any temperature difference up to 240°F (115.6°C) within the above range.

2.9.3.4 Testloadtemperatures. The thermometer or other temperature measuring instrument used to measure the test water load temperature shall be as specified in section 4, Paragraph 12.3 ofIEC 705. Use only one.thermometer or other temperature measuring device throughout the entire test procedure.

2.9.3.5 Temperatureindicatorsystem for measuringsurfacetemperatures. The temperatures ofan external surface ofan appliance shall be measured by means ofa thermocouple in firm contact with the surface. The temperature indicating system shall have an error no greater than ±.45°F (±0.25°C)over the range 65° to 90°F (18°Cto 32°C).

2.9.4 HeatingValue.The heating value of the natural gas orpropane shall be measured with an instrument and associated readout device thathas a maximum error no greater than .5% ofthe measured value and a resolution of .2% or less ofthe full scale reading of the indicator instrument. The heatingvalue ofnatural gas orpropane must be corrected for local temperature and pressure conditions.

2.9.5 Scale.The scale used forweighing the testblocks shall have a maximum error
nogreater than 1 ounce (28.4 g).'The scale used for weighing the microwave oven test water load shall be as specified in section four,paragraph 12.3 ofIEC 705.

3. TestMethodsandMeasurements

3.1 Testmethods. 3.1.1 Conventionaloven. Perform a test by establishing the testing conditions set forth in section 2, "TEST CONDITIONS." of this appendix, and 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, ifso equipped.

Before beginning the test, theconventional

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
centerof the usable baking space. Ifthere is

a selector switch for selecting the mode of operation ofthe oven, set it for normal baking. Ifan oven permits baking by either forced convection by using a fan, or without forced convection, the oven isto be tested in each ofthose two modes. Ifthe oven thermostat does not cycle on and off,adjust

or determine the conventional electric oven thermostat setting to provide anaverage internal temperature which is 3250 5°F (162.8°±2.8°C) airtemperature. Ifthe oven thermostat operates by cycling on and off, adjust or determine the conventional electric

oven thermostat setting toprovide an average internal temperature which is 325°±5°F (162.8°±2.8°C) higher than the room ambient air temperature. The oven shall remain on for
at least one complete thermostat "cut-off/cuton" ofthe electrical resistance heaters or gas burners after the testblock temperature has increased 234°F (112.2°C) above its initial temperature.

3.1.1.1 Self-cleaning operationofa conventionaloven.Establish the test conditions set forth in section 2, "TEST CONDITIONS." ofthis Appendix. Adjust any pilotlights ofa conventional gas oven in accordance with the manufacturer's instructions and turn offthe 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. Then set the conventional oven's selfcleaning process in accordance with the manufacturer's instructions. Ifthe self-

- cleaning process is adjustable, use the average time recommended by the manufacturer for a moderately soiled oven.

3.1.1.2 Continuouslyburning pilotlights of

a conventionalgasoven. Establish the test conditions set forth in section 2, "TEST CONDITIONS." ofthis appendix. Adjust any pilot lights ofa conventional gas oven in accordance with the manufacturer's instructions and turn offthe gas flow to the conventional cooking top. Ifa 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 ofthe gas meter.

3.1.2 Conventionalcookingtop. Establish the testconditions set forth in section 2, "TEST CONDITIONS," of this appendix. Adjust any pilot lights ofa conventional gas cooking top inaccordance with the manufacturer's instructions and turn offthe
gas flow to the conventional oven(s), ifso equipped. The temperature ofthe conventional cooking top shall be its normal nonoperating temperature as defined in section 1.6 and described in section 2.6.Set the testblock in the center of the surface unit undertest. The small testblock, W2, shall be used on electric surface units of7 inches (178 mm) or less in diameter. The large testblock, W3, shall be used on electric surface units

over 7 inches (177.8 mm) in diameter and on all gas surface units. Turn 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 to 25±5 percent of the maximum energy input rate. After 15±0.1 minutes at the reduced energy setting,
turn offthe surface unitunder test.

3.1.2.1 Continuouslyburning pilotlights ofa conventional gascookingtop. Establish the test conditions set forth in section 2, "TEST CONDITIONS," of this appendix. 

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Adjust any pilot lights ofa conventional gas cooking top in accordance with the manufacturer's instructions and turn offthe gas flow to the conventional oven(s). Ifa 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 ofthe gas meter.

3.1.3 Microwaveoven. 3.1.3.1 Microwaveoven testenergyor poweroutput.Establish the testing conditions set forth in section 2, "TEST CONDITIONS." ofthis appendix. Follow the test procedure as specified in section 4, Paragraph 12.4 ofIEC 705.

3.2 Testmeasurements. 3.2.1 Conventionaloven testenergy consumption.If the oven thermostat controls the oven temperature without cycling onand off, measure the energy consumed, Eo, when the temperature of the block reaches To (To is 234°F (112.2°C) above the Initial block temperature, T). If the oven thermostat operates by cycling on and off, make the following series of measurements: Measure the block temperature, TA, and the energy consumed, EA, at the end of the last "ON" period ofthe conventional oven before the block reaches To. Measure the block temperature, TB, and the energy consumed, EB, at the beginning ofthe next "ON" period. Measure the block temperature, Tc, and the energy consumed, Ec, at the end ofthat "ON" period. Measure the block temperature, TD. and the energy consumed, ED, at the beginning ofthe following "ON" period. Energy measurements for Eo, EA. EB, Ecand ED should be expressed in watt-hours for conventional electric ovens or standard cubic feet (L) ofgas for conventional gas ovens. For

a gas oven, measure in watt-hours any electrical energy, Eio, consumed by an ignition device or otherelectrical components required for the operation ofa conventional gas oven while heating the test block to To.

3.2.1.1 Conventionaloven averagetest energyconsumption.Ifthe conventional

oven permits baking by eitherforced convection or without forced convection and the oven thermostat does not cycle on and off, measure the energy consumed with the forced convection mode, (Eo)l, and without the forced convection mode, (Eo)2, when the temperature ofthe block reaches To (To is 234°F (112.2°C) above the initial block temperature, T). Ifthe conventional oven permits bakingby either forced convection or without forced convection and the oven thennostat operates by cycling on and off, make the following series ofmeasurements with and without the forced convection mode: Measure the blocktemperature. TA. and the energy consumed, EA. at the end of the last "ON" period ofthe conventional

oven before the block reaches To. Measure the block temperature, TB. and the energy consumed, EB, atthe beginning ofthe next "ON" period. Measure the blocktemperature, Tc, and the energy consumed, Ec, at the end ofthat "ON" period. Measure the block temperature, TD, and the energy consumed, ED, at the beginning of the following "ON" period. Energy measurementsfor Eo. EA. EB. Ec and ED should be expressed in watt-hours for conventional electric ovens or standard cubic feet (L) ofgas 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 ofa conventional gas oven while heating the test block to Tousing the forced convection mode, (Elo)l. and without using the forced convection mode, (Eio)2.

3.2.1.2 Energyconsumptionofselfcleaningoperation. Measure the energy consumption. Es. in watt-hours ofelectricity or in standard cubic feet (L) ofgas consumed during the self-cleaning test setforth in section 3.1.1.1. For a gas oven, also measure in watt-hours (kJ) any electrical energy. Els, consumed by ignition devices or other electrical components required during the self-cleaning test.

3.2.1.3 Gasconsumptionof continuously burning pilotlights.Measure the gas consumption ofthe pilot lights, Po, in standard cubic feet (L) ofgas and the test duration, Lo, in hours for the test set forth in Section 3.1.1.2. Ifa gas flowrate meter is used, measure the flow rate, PR. in standard cubic feet per hour (Us).

3.2.1.4 Clockpower.Ifthe conventional
oven, conventional range, or microwave/ conventional range includes an electric clock which is on continuously, and the power rating in watts 

### U/s) of this feature is not known, measure the clock power, PCL, in
watts U/s.)

3.2.2 Conventionalsurfaceunittest energyconsumption.For the surface unit under test,measure the energy consumption, ECTr in standard cubic feet (L) ofgas or watthours ofelectricity, and the testblock temperature, TcrT atthe end ofthe 15 minute (reduced input setting) test interval for the test specified in section 3.1.2 and the total time,TT. in hours, thatthe unit is undertest. Measure any electrical energy, Eic, consumed by anignition device ofa gas heating element in watt-hours.

3.2.2.1 Gasconsumptionofcontinuously burning pilotlights.If the conventional gas cooking topunder test hasone or more continuously burning pilot lights, measure the gas consumed during the testby the pilot lights, Pc, instandard cubic feet (L)ofgas. and the test duration, Lc. inhours as specified in section 3.1.2.1. Ifa gas flow rate meter is used, measure the flow rate. P. in standard cubic feet per hour (L/s).

3.2.3 Microwaveoven testenergy consumptionand powerinput. Measurements are to be made as specified in section 4, Paragraphs 12.4 and 13 ofIEC 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, TR, at the startand end ofeach test, as determined in section 2.5.

3.3.2 Record measured test block weights WI, W2, and W 3 in pounds (kg). 3.3.3 Record the initial temperature, Ti, of the test block undertest.

3.3.4 For a conventional ovenwith a thermostat which operates by cycling on and off,record the conventional oven test measurements TA, EA. TB, EB, Tc, Ec, To,and ED. Ifthe thermostat controls the oven temperature without cycling on and off, record Eo. Fora gas oven which also uses electrical energy for the ignition or operation ofthe oven, also record Elo.

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 cycling on and off,

measure the energy consumed with the forced convection mode, (Eo)

,and without the forced convection mode, (Eo)2. Ifthe conventional oven operates with or without forced convection and the thermostat controls the oven temperature bycycling on and off,record the conventional oven test
measurements TA, EA. TB, EB,Tc, Ec, TD, and ED. 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, (Elo)1, and without using the forced convection mode. (EIO)2.

3.3.6 Record the measured energy consumption, Es, and fora gas oven. any electrical energy, Els, for the testof the selfcleaning operation ofa conventional oven.

3.3.7 Record the gas flow rate. PR; or the
gas consumption, Po, and the elapsed time. Lo. that any continuously burning pilotlights ofa conventional oven are under test.

3.3.8 Record the clock power measurement orrating, PCL. in watts.

3.3.9 For the surface unit under test, record the energy consumption, EC.,the final
testblock temperature, TCT, the total test time, TT. For a gas cooking top which uses electrical energy for ignition ofthe burners. also record Eic.

3.3.10 Record the gas flow rate, P; or the
gas consumption, Pc, and the elapsed time, Lc. that any continuously burning pilot lights ofa conventional gas cooking top are under
test.

3.3.11 Record the heating value, Hn, as determined in section 2.2.2.2 for the natural gas supply.

3.3.12 Record the heatingvalue, 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 initial and final temperature, Ti and T,2 of the test water load: the mass ofthe test container before filling with the testwater load and the mass of the
test water load. Mc and Mwrespectively; and the measured room temperature, To;as determined in section 3.2.3.

4. Calculationof Derived ResultsFrom Test Measurements

4.1 Conventionaloven. 4.1.1 Testenergyconsumption.For a conventional oven with a thermostat which operates bycycling on and off, calculate the
test energy consumption, Eo. corresponding
to To with the aid of the figure in section 5 ofthis appendix, expressed in watt-hours (kJ) for electric ovens and in Btu's (kj) forgas ovens, and defined as: 

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## E =

### EAB +

To- 

## T 

## (E 

# K TCD

- TAB )

for elec

-and, E =(EAB xH)+

O

- TAB 

### x

### (E,
TCD- TAB )

Where:
H=either Hn or Hp, the heati
gas used in the test as s[ section 2.2.2.2 and secti expressed in Btu's per s foot (kJ/L). To=234°F (112.2°C) plus the temperature. and,

(T A + 1 TAB = 

### 2

D (T + 

## TcD= 2

(EA + ] EAB = 

### 2

E (E 

### C+ ] ECD = 

### (E 2 CD

- EAB)]



### tric ovens, 

### E (E 0 

### )l +(E0

### ) 2
EO 

### )2



### (E,),+(E,o)2
2
Where: (Eo) =test energy consumption using the CD

- EAB )

### XH forced convection mode in watt-hours (kJ) forelectric ovens and in Btu's (kJ) for gas ovens as measured in section 3.2.1.1. for gas ovens (Eo)2=test energy consumption without using the forced convection mode in watthours (kJ) for electric ovens and in Btu's ng value ofthe (kJ) for gas ovens as measured in section peclfied in 3.2.1.1.

.on(.2.2.2.3. (E 1o)i=electrical energy consumption in watttandard cubic hours (kJ) ofa gas oven in forced convection mode as measured in section iinitial testblock * 3.2.1.1. (EIo)2=electrical energy consumption in watthours (kJ) ofa gas oven without using the forced convection mode as measured in rB) section 3.2.1.1. 4.1.2 Conventionaloven annualenergy consumption.
D o ) 4.1.2.1 Annual cooking energy consumption.

4.1.2.1.1 Annualprimaryenergy 

### EB) consumption.Calculate the annual primary E-B energy consumption forcooking, Eco. expressed in kilowatt-hours (kJ) for electric 

### E) \ ;ovens and in Btu's (kJ) for gas ovens, and ED ) defined as:

Where:
TA=block temperature in °F (°C) atthe end ofthe last "ON" period of the conventional oven before the testblock reaches To. TB=block temperature in °F (°C) at the beginning ofthe "ON" period following the measurement ofTA. Tc=block temperature in °F (°C) at the end of the "ON" period which starts with TB. TD=block temperature in °F (°C)at the beginning of the "ON" period which follows the measurement ofTc. EA=volume ofgas consumed in standard cubic feet (L) atthe end ofthe last "ON" period before the testblock reaches To. EB=volume ofgas consumed in standard cubic feet (L) ofgas atthe beginning of the "ON" period followingthe measurement TA. Ec=volume ofgas consumed in standard cubic feet (L) ofgas at the end of the "ON" period which startswith TB. Eo=volume ofgas consumed in standard cubic feet (L) ofgas at the beginning of the "ON" period which follows the measurement ofTc.
4.1.1.1 Averagerest energy consumption. Ifthe conventional oven can be operated with or without forced convection, determine the average test energy consumption, Eo and Elo, in watt-hours (kJ) forelectric ovens and Btu's (kJ) for gas ovens using the following equations: 

### E 0 

### xHe 

### x, O

.Ec = 

### HX 0O 

### for electric ovens, 

### W XCp xT

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 Btu/Wh (3.6 kJ/Wh.) conversion factor ofwatt-hours toBtu's. Oo=35.5 kWh per year. annual useful cooking energy output ofconventional electric oven.. Wi=measured weight.of test block in pounds (kg). Cp=0.23 Btu/lb-°F (0.96 kJ/kg.°C). specific heat of test block. T=234°F (112.2°C). temperature rise oftest block.

or.



### ECO = E0 

### 0 

### forgas ovens, WxCp xT

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. Oo=124.200 Btu (131,038 kj)peryear, 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 secondaryenergy consumptionforcookingof gasovens. Calculate the annual secondary energy consumption for cooking. Eso. expressed in kilowatt-hours and defined as:



### E 10 

### xHe xO0

S

### W xC, xT

Where:
Eio=electrical test energy consumption as measured in section 3.2.1 oras calculated in section 4.1.1.1. Oo=35.5 kWh peryear. annual useful cooking energy output. He, W 1, Cp, and T are as defined in section 4.1.2.1.1.
4.1.2.2 Annualenergy consumptionof
anycontinuously burning pilotlights. Calculate the annual energy consumption of
any continuously burning pilot lights, Epo, expressed in Btu's (kJ) and defined as:


### Epo =PR xHx(A-B),

or.



### Ep0 

### = °xHx(A-B) L

0 Where: PR=pilot gas flow rate in standard cubic feet perhour (Us). as measured in section 3.2.1.2. Po=standard cubic feet (L) ofgas 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 pilot lights tested,

as measured in section 3.2.1.2. 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 cubic foot (kJ/L). A=8.760, number ofhours in a year. B=300, number ofhours any continuously burning pilot lights contribute to the heating ofan oven for cooking food.
4.1.2.3 Annual conventionaloven selfcleaningenergy.

4.1.2.3.1 Annualprimary energy consumption.Calculate theannual 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 xSe 

### xC, for electric ovens,
Where: Es=energy consumption in watt-hours, as measured in section 3.2.1.2. So= 11, average number oftimes a selfcleaning operation ofa conventional electric oven is used peryear. C=.001 kW/W conversion factor for watts to kilowatts.

or.



### ESC = Es xH Sg, for gas ovens,

Where: Es=gas consumption in standard cubic feet (L), as measured in section 3.2.1.2.

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

H=H, or Hp, the heating value of thegas used in the test as specified in section 2.2.2.2 and section 2.2.2.3 in Btu's per standard cubic foot (kJ/L). Sg=7, average number of times a self-cleaning operation ofa conventional gas oven is used per year. 4.1.2.3.2 Annual secondaryenergy consumptionforself-cleaningoperationof
gasovens.Calculate the annual secondary energy consumption For self-cleaning operations ofa gas oven, Ess, expressed in kilowatt-hours and defined as:



### ESS =EI xSg xC,

Where:
EIs = electrical energy consumed during the self-cleaning operation ofa conventional gas oven, as measured in section 3.2.1.2. Sg = 7, average number oftimes a selfcleaning operation ofa conventional gas
oven is used peryear. C = .001 kW/W conversion factor for watts to kilowatts.
4.1.2.4 Annualclock energy consumption.Calculate the annual energy consumption ofany constantly operating electric clock, ECL, expressed inkilowatthours and defined as:

ECL = PCL X HK X C,
Where: PcL = power rating ofclock which is on continuously, in watts, as measured in section 3.2.1.3. HK = 8,760, number of hours in a year. C = .001 kW/W conversion factor forwatts to kilowatts. 4.1.2.5 Totalannualenergy consumption of

asingle conventionaloven. 4.1.2.5.1 Conventionalelectricoven energyconsumption.Calculate the total annual energy consumption ofa conventional electric oven, EAO; expressed in kilowatt-hours and defined as:



### EAO =ECO +ESC +ECL, Where:
Eco = annual primary cooking energy consumption as determined in section 4.1.2.1.1. Esc = annual primary self-cleaning energy consumption as determined in section 4.1.2.3.1. ECL = annual clock energy consumption as determined in section 4.1.2.4. 4.1.2.5.2 Conventionalgas oven energy consumption.Calculate the total annual gas energy consumption ofa conventional gas oven, EAOO. expressed in Btu's (kj) and defined as:

EAOG =ECO +EPO +Esc, Where:
Eco = annual primary cooking energy consumption as determined in section 4.1.2.1.1. Epo= annual pilot light energy consumption

as determined in section 4.1.2.2. Esc = annual primary self-cleaning energy consumption as determined in section 4.1.2.3.1. Ifthe conventional gas oven uses electrical
energy, calculate the total annual electrical
energy consumption, EAOE. 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. ECL = annual clock energy consumption as determined in section 4.1.2.4.
4.1.2.6 Totalannualenergyconsumption ofmultipleconventionalovens.Ifthe cooking appliance includes more than one conventional oven calculate the total annual
energy consumption ofthe conventional ovens using the following equations:

4.1.2.6.1 Conventional electricoven energyconsumption.Calculate thetotal annual energy consumption, ETO. in kilowatthours and define as:

ETO =EACO +EASC +ECL,
Where:

1 n EACO =-- (Eco )i,

n i=l

average annual primary energy consumption forcooking,
Where:

n= number ofconventional ovens in the basic model. Eco= annual primary energy consumption for cooking as determined in section 4.1.2.1.1.



### EASC = 

### (Esc)

n ij=

average annual self-cleaning energy consumption,
Where:

n= number ofself-cleaning conventional

ovens in the basic model. Esc = annual primary self-cleaning energy consumption as determined according to section 4.1.2.3.1. ECL =clock energy consumption as determined according to section 4.1.2.4.
4.1.2.6.2 Conventionalgas oven energy consumption.Calculate the total annual gas energy consumption, ETOG. in Btu's (kj)and define as:

ETO =EACO +EASC +ETPO,
Where:
EAco = average annual primary energy consumption for cooking in Btu's (kJ) as defined in section 4.1.2.6.1.
EASC = average annual self-cleaning energy consumption in Btu's (kJ) as defined in section 4.1.2.6.1. n ETPO = (EPo),i i=l
total annual energy consumption ofany pilot lights, Where: Epo = annual energy consumption ofany continuously burning pilot lights determined according tosection 4.1.2.2.

n = number ofpilot lights in the basic model.

Ifthe oven also uses electrical energy, calculate the total annual electrical energy consumption, ETOE. in kilowatt-hours and define as:

ETOE = EASo+ EAAS +ECL,
Where:



### 1 n

EASO =-- (Eso)i

n i=l

average annual secondary energy consumption for cooking, Where:

n =number ofconventional ovens inthe basic model. Eso = annual secondary energy consumption for cooking ofgas ovens asdetermined in section 4.1.2.1.2.

n 

### EAAS =-S(Ess)i,

-n i=l

average annual secondary self-cleaning
energy consumption, Where:

n =number ofself-cleaning ovens in the basic model. Ess = annual secondary self-cleaning energy consumption ofgas ovens as determined in section 4.1.2.3.2. ECL = annual clock energy consumption as determined in section 4.1.2.4. 4.1.3 Conventionaloven cooking efficiency.

4.1.3.1 Single conventionaloven. Calculate the conventional oven cooking efficiency, EffAo. using.the following equations:

For electric ovens:



### EffAo= W xC xT

Eox He
and,

Forgas ovens:



## ff xCp T Eff^o= Eo +(EO XHe)
Where:
WI = measured weight oftestblock in pounds (kg). Cp = 0.23 Btu/lb-°F (0.96 kJ/kg.°C), specific heat of testblock. T = 234°F (112.2°C), temperature rise oftest block. 

## I _ _

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

Eo = test energy consumption asmeasured in section 3.2.1 orcalculated in section 4.1.1 or section 4.1.1.1. He = 3.412 Btu/Wh (3.6 kJ/Wh), conversion factor for watt-hours to Btu's. Elo = electrical testenergy consumption according to section 3.2.1 oras calculated in section 4.1.1.1. 4.1.3.2 Multipleconventionalovens. 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 

### EffT 0 = 

### nEffWhere:

n = number ofconventional ovens in the cooking appliance. EffAo = cooking efficiency of each oven determined according to section 4.1.3.1. 4.1.4 Conventionaloven energy factor. Calculate the energy factor, or the ratio of useful cooking energy output to the total energy input, Rb,using the following equations:

For electric ovens,

RO =0--,
EAO Where:
Oo = 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:

RO '

EAOG +(EAOE xHe)'
Where:
Oo = 124,200 Btu (131.038 kj) peryear. annual useful cooking energy output. EAOG = total annual gas energy consumption for conventional gas ovens 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. H, = 3,412 Btu/kWh (3.6 kJ/Wh). conversion factor for kilowatt-hours to Btu's. 4.2 Conventionalcookingtop. 4.2.1 Conventionalcookingtopcooking efficiency.

4.2.1.1 Electric surface unitcooking efficiency.Calculate the cooking efficiency, Effsu. of the electric surface unit under test, defined as:



### He xECT
Where:
W = measured weight oftestblock. W2 or W 3, expressed in pounds (kg). Cp = 0.23 Btu/lb-°F (0.96 kJ/kg-°C), specific heat oftest block. Tsu = temperature rise ofthe test bl
test block temperature, Tcr, as determined in section 3.2.2, m: initial testblock temperature,

. expressed in °F (°C). He = 3.412 Btu/Wh (3.6 kJ/Wh,) cor factor ofwatt-hours to Btu's. EcT = measured energy consumptio determined according to sectio expressed in watt-hours.
4.2.1.2 Gassurface unitcooking efficiency. Calculate the cooking efl Effsu. of the gas surface unit under defined as:



### Eff W 3 

### xCpxTsu Eff E
Where:
W3 =measured weight oftestblock measured in section 3.3.2, expr pounds (kg). Cp and Tsu arethe same as defined 4.2.1.1.
and.


### E=[(Ec-Ecp)XH]+(Ec

Where:
EcT = total gas consumption forthe surface unit test as measured ir 3.2.2. Eic = electrical energy consumed b 3 ignition device ofa gas surface measured in section 3.2.2. 

### He = 3.412 Btu/Wh, conversion fact hours to Btu's. H = either H. or Hp, the heatingvalh gas used in the test as specified section 2.2.2.2 and section 2.2.: expressed in Btu'sper standard foot (kJ/L)ofgas. Ecp = Px TT. (pilot consumption, in cubic feet (L), during unit test).



### p Pc (pilot flowin stan Lc' cubic feet per ho

Where:
Pc= any pilot lights gas consumptii defined in section 3.22.1. Lc = elapsed time of the cooking tol lights test as defined in section TT = the elapsed test time as definec section 3.2.2.
4.2.1.3 Conventionalcooking to efficiency.Calculate the convention cooking top cooking efficiency. Effc the following equation:



### EffcT =-- (Effsu),,
i=1 Where:

n = number ofsurface units in the c top. Effsu = the efficiency ofeach ofthe units, as determined according 4.2.1.1 or section 4.2.1.2.
4.2.2 Conventionalcookingtop. energyconsumption. lock: Final

inus the Tl,

iversion

in, as

n 3.2.2, 4.2.2.1 Conventionalelectriccooking top
energyconsumption. Calculate the annual energy consumption ofan electric cooking top, ECA. in kilowatt-hours peryear, defined

as:

OCT ECA

- CT EffCT Where:
OT = 209.4 kWh per year, annual useful Ficiency, cooking energy output. test. EffTr =conventional cooking top cooking efficiency as defined in section 4.2.1.3. 4.2.2.2 Conventionalgascooking top. 4.2.2.2.1 Annual cooking energy consumption.Calculate the annual energy consumption forcooking, Ecc. in Btu's (kJ) per year for agas cooking top, defined as:

as -essed in 

### E OCT

in section EffCT Where:
Ocr = 732.500 Btu (772,828 kJ) per year. annual useful cooking energy output.



### xH) Effcr = the gas cooking top efficiency as defined in section 4.2.1.3. 4.2.2.2.2 Annualenergy consumptionof
gas anycontinuously burninggaspilots.

nsection Calculate the annual energy consumption of any continuously burning gas pilot lightsof

an the cooking top, Epc, in Btu's (kJ) peryear, unit as defined as:

orofwatt- Ep PxA x H,
Where: ue ofthe Where: Iin P =pilot light gas flow rate as defined in 2.3, section 4.2.1.2, or as measured in section I cubic 3.2.2.1. A = 8,760 hours, the total number ofhours
istandard in a year. where: H = either Hn orHp, the heating value ofthe 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 dard foot (kJ/L) ofgas. ur) 4.2.2.2.3 Totalannualenergy consumptionofaconventionalgascooking top.Calculate the total annual energy

on consumption ofa conventional gas cooking top. ECA. in Btu's (kJ) peryear. defined as: pilot 3.1.2.1. ECA = 

### Ecc +EPc, d in Where:

Ecc = energy consumption for cookingas p cooking determined in section 4.2.2.2.1. al Epc =annual energy consumption ofthe pilot T,using lights as determined in section 4.2.2.2.2.
4.2.3 Conventional cookingtop energy factor.Calculate the energy factor orratio of useful cooking energy output for cooking to the total energy input. RcT, as follows:

For an electric cooking top, the energy factor is the same as the cooking efficiency ooking as determined according to section 4.2.1.3. For gas cooking tops, surface
to section

annual Rc =OCT E C T
ECA Where: 

## II _ _ _

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

OcT = 732,500 Btu (772,828 kJ) peryear, annual useful cooking energy output of cooking top. ECA = total annual energy consumption of cooking top determined according to section 4.2.2.2.3.
4.3 Combined Components. The annual energy consumption and cooking efficiency ofa kitchen range, e.g. a cooktop and oven combined, shall be the

sum of the annual energy consumption and cooking efficiency ofeach ofitscomponents. The annual energy consumption and cooking efficiency for other combinations ofovens, cooktops and microwaves will also be treated

as the sum ofthe annual energy consumption and cooking efficiency ofeach of its components. The energy factor ofa combined component is the sum of the ratio ofthe annual useful cooking energy output to the totalannual energy consumption ofeach component.

4.4 Microwaveoven. 4.4.1 Microwaveoven testenergy. Calculate the microwave oven test energy output. ET, in watt-hour's (kJ). The calculation is repeated three times as required in section 3.2.3.The average of the three ET'S is usedfor calculations in 4.4.3 and 4.4.5. For calculations specified in units of
energy (watt-hours), use the equation below: 

### ET

### 4.187Mw(T 2 

### -T)+ 0.88M (T2 

### - T)

HE Where:
Mw = themeasured mass ofthe test water load, in grams. Mc = the measured mass ofthe test container before filling with test water load, in grams. T. = the initial test water load temperature, in °C (°F). T

2 = the final test water load temperature, in °C (°F). To= the measured ambient room temperature, in °F (°C). C =0.88 kJ/kg-°C. (0.210 Btu/lb-°F) specific heat of test container. Cp= 4.187 kJ/kg-°C, (1.0 Btu/lb-°F) specific heat of water. He= 3.6 kJ/Wh (3.412 Btu/Wh,) conversion factor for Btu's to Watt-hours. 4.4.2 Microwaveoven testpoweroutput. Calculate the microwave oven test power output. PT, in watts as specified in Section four, paragraph 12.5 ofIEC 705. The calculation is repeated for each of the three
tests as required in section 3.2.3. The average ofthe three PT'S is used for calculations in section 4.4.4. 4.4.3 Microwave oven annualenergy consumption.Calculate the microwave oven annual energy consumption, EMO. inkWh's
peryear, defined as:



### E EM X OM

EMO = 

### ET
Where:
EM = the energy consumption as defined in section 3.2.3. OM = 77.3 kWh's peryear, the microwave

oven annual useful cooking energy output. ET = the test energy as calculated in section 4.4.1.
4.4.4 Microwaveoven cooking efficiency. Calculate the microwave oven cooking efficiency, EffMo, as specified in section four, paragraph 14 ofIEC 705.

4.4.5 Microwaveoven energy factor. Calculate the energy factor or the ratio ofthe usefulcooking energy output to total energy input on a yearly basis, RMO, defined as:



### OM RMO =-EMO

BILUNG CODE 6450-01-P 

### 15356

___

### Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / Proposed Rules 15357



# 5. ILLUSTRATION OF CONVENTIONAL OVEN TEST DATA



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### D Enery In 

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# ENERGY INPUT

BILLING CODE 645G-01-C

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

Where:
OM = 77.3 kWh. annual useful cooking energy output. EMO = annual total energy consumption as determined in section 4.4.3. 6. Appendix J to subpart B ofpart 430 is revised to read as follows: 

### Appendix Jto SubpartB ofPart430- Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes Washers

1. Definitions

1.1 Agitatormeansthe device that provides the shaking or stirring motion to the clothes for washing. The device shall include all fixtures and other essential assemblies needed for clothes washing in the normal cycle.

1.2 Bone-drymeans a condition or a load of test cloth which has been dried in a dryer at maximum temperature for a minimum of 10 minutes, removed and weighed before cool down, and then dried again for 10- minute periods until the final weight change ofthe load is 1percent or less.

1.3 Clothescontainer means the compartment within the clothes washer that holds the clothes during operation of the machine.

1.4 Compactrefers to a clothes washer which has a clothes container capacity ofless than 1.6 ft3 (45 L).

1.5 Deep rinsecyclerefers to a rinse cycle in which the clothes container is filled 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 sequentially rotates or tumbles portions of the clothes load above the water level allowing the clothes load tofall freely back into the water. The principal axis ofthe clothes container is in a horizontal plane and the access to the clothes container is through the front ofthe machine.

1.7 Machine-controlled water fill capabilitymeans a clothes washer which has the capability ofautomatically controlling the level of the water in the tub dependent upon the size ofthe test load, without operator intervention.

1.8 Make-upwatermeans the amount of fresh water needed to supplement the amount ofstored water pumped from the external laundry tub back into the clothes washer when the suds-return feature is activated in order to achieve the required water fill level in the clothes washer.

1.9 Modifledenergyfactormeans the quotient of the cubic foot (liter) capacity 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 ofremaining moisture ofthe test load for nonwater-heating clothes washers and expressed as the sum of the machine electrical energy consumption and the energy required for removal ofmoisture of the test load for water-heating clothes washers.

1.10 Moistureremovalenergymeans the nominal energy required for a clothes dryer
to remove moisture from clothes multiplied bythe difference between weighted test load after the normal cycles and the weighted reference (bone-dry) weightofthe test load.

1.11 Nonwater-heating clothes washer refers toa clothes washer that has bothhot and cold water supply pipe connections. This type ofclothes washer does not have an internal hot water heater device to generate the energy needed to heat inlet water.

1.12 Normal cyclemeans the cycle recommended bythe manufacturer for washing cotton and/or linen clothes.

1.13 Sensorfilledrefers toa type ofwater fill control which automatically terminates the fill when the water reaches an appropriate level in the tub.

1.14 Sprayrinsecycle refers to a rinse cycle in which water is sprayed ontothe clothes load for a definite period oftime without maintaining any specific water level in the clothes container.

1. Standard refers toa clothes washer which has a clothes container capacity of 1.6 ft3 (45 L)or greater.

1.16 Suds-returnmeans a feature or option on a clotheswasher which causes the stored wash water obtained byutilizing the suds-saver feature to be pumped from the external laundry tubback into the clothes washer.

1.17 Suds-savermeansa feature or option

on a clothes washerwhich allows the userto store used wash water in an external laundry tub for use with subsequent wash loads.

1.18 Temperature use factormeans the percentage ofthe total number ofwashes a

user would wash with a particular wash/ rinse temperature setting.

1.19 Thermostaticallycontrolledvalves refer toclothes washer valves which sense water temperature and adjust valve orifices appropriately to maintain a desired mixed
water temperature.

1.20 Timefilledrefers to a type ofwater fill controlwhich uses a combination of
water flow controls in conjunction with time
to terminate the water fill cycle.

1.21 Top-loader-horizontal-axis clothes washermeans a clothes washer which sequentially 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 axisof the clothes container is in a horizontal plane and the access to the clothes container is through the top ofthe clothes washer.

1.22 Top-loader-vertical-axis clothes washermeans a clothes washer that flexes and oscillates the submerged clothes load through the water by means ofmechanical agitation or other movement. The principal axis of the clothes container is in a vertical plane and the access tothe clothes container is through the top of the clothes washer.

1.23 Waterconsumption factormeans the quotient ofthe cubic foot (liter) capacity of the clothes washer divided bythe total weighted per-cycle water consumption.

1.24 Water-heatingclotheswasherrefers
to a clothes washer which does not have a supply pipe connection for hot water. This type ofclothes washer does have an internal electrical water heating device to generate the energy needed to heat inlet water. 2. Testing Conditions
2.1 Installation. Install the clothes washer in accordance with manufacturer's instructions.

2.2 Electricalenergysupply. Maintain the electrical supply atthe clothes washer terminal block within 2 percent of 120/240

or 120/208Y as applicable to the particular terminal block wiring system as specified by the manufacturer. Ifthe clothes washer has

a dual voltage conversion capability, conduct the test at the highest voltage specified by the manufacturer.

2.3 Watertemperature.For honwaterheating clothes washers not equipped with thermostatically controlled inlet water valves, the temperature ofthe hot and cold water supply shall be maintained at 100°F ±10°F (37.8°C±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 (60.0°C±2.8°C) and the cold water supply shall be maintained at 60°F±5°F (15.6°C±2.8°C). Forwater-heating clothes washers that have infinite or various temperature selection feature, the temperature of the water supply shall be maintained ata minimum of55°F (12.8°C) and a maximum of60°F (15.6°C). Water meters shall be installed in both the hot and cold water lines to measure water consumption.

2.4 Waterpressure.The static water pressure atthe hot and cold water inlet connections of the machine shall be maintained during the test at 35 pounds per square inch gauge (psig)±2.5 psig (241.3 kPa±17.2 Kpa). The static water pressure for

a single water inlet connection shall be maintained during the testat 35 psig±2.5psig (241.3 Kpa±l7.2 kPa). Water pressure gauges shall be installed in 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. Weighingscales. 2.5.1.1 Weighingscale for testcloth. The scale shall have a range of0 Ibs (0kg) to a maximum of30 Ibs (13.6 kg) with a resolution ofat least 0.2 oz (5.7g) and a maximum error no greater than0.3 percent ofany measured value within the range of3 Ibs (1.4 kg) to 15 Ibs (6.8 kg).

2.5.1.2 Weighingscale for clothes container capacitymeasurements.The scale should have a range of0 Ibs (0 kg) toa maximum of500 Ibs (226.8 kg)with a resolution of 0.50 Ibs (0.23 kg) and a maximum error no greater than0.5 percent ofthe measured value.

2.5.2 Watt-hourmeter.The watt-hour
meter shall have a resolution ofat least 1Wh (3.6 kJ) and a maximum error nogreater than 2 percent ofthe measured value for any demand greater than 50 Wh (180.0 kJ).

2.5.3 Temperaturesensingdevice.The temperature sensing device shall have an

error nogreater than ±1°F (±0.6°C) over the range of32°F (0°C) to200°F (93.3°C).

2.5.4 Watermeter.The water meter shall 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 1 gal/min (3.8L/min) to 5 gal/min (18.9 L/ min). 

### 15358

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

2.5.5 Waterpressuregauge.The water pressure gauge shall have a resolution of 1 psig (6.9 kPa) and shall have anerror no greater than 5 percent ofany measured value

over the range of32.5 psig (224.1 kPa) to 37.5 psig (258.6 kPa).

2.6 Test cloths. 2.6.1 Energytestcloth.The energy test cloth shall be clean and consistof the following:

2.6.1.2 Pure finishedbleachedcloth. Pure finished bleached cloth, made with a momie

or granite weave, which is 50 percent cotton and 50 percent polyester and weighs 5.75 oz/ yd2 (195.0 g/m2)and has 65 ends on the warp and 57 picks on the fill.

2.6.1.3 Clothmaterial.Cloth material that is 24 inby 36in (61.0 cm by 91.4 cm) and has been hemmed to 22 inby 34 in (55.9 cm by 86.4 cm) before washing. The maximum shrinkage after five washes shall not be more than four percent on the length and width.

2.6.1.4 Number oftests.The number of
test runs on the same energy test clothshall not exceed 25 runs.

2.6.2 Energystuffier cloths.The energy stuffier cloths shall be made from energy test cloth material and shall consist ofpieces of material that are 12 inby 12 in (30.5 cmby 30.5 cm) and have been hemmed to 10in by 10 in (25.4 cm by 25.4 cm)before washing. The maximum shrinkage after five washes shall not be more than fourpercent on the length and width. The number oftestruns on the same energy stuffier cloth shall not exceed 25 runs.

2.7 Compositionoftestloads. 2.7.1 Sevenpoundtestload.The seven pound test load shall consist ofbone-dry energy testcloths which weigh 7±0.07 Ibs (3.18±0.03 kg). Adjustments to the test load
to achieve the proper weight can be made by the use ofenergy stuffier cloths.

2.7.2 Threepoundtest load.The three pound test load shall consist ofbone-dry energy test cloths which weigh 3±0.03 Ibs (1.36±0.014 kg). Adjustments to the test load
toachieve the proper weight can be made by the use ofenergy stuffier cloths.

2.8 Use oftestloads. 2.8.1 Top-loader-vertical-axis clothes washers forcalculating energyfactor.The top-loader clothes washer shall be tested without a testload, except for clothes washers equipped with machine controlled water fill capability. Machine controlled water fill capable clothes washers shall use

a test load per section 2.8.2.

2:8.2 Front-loader,top-loader-horizontalaxis, top-loader-vertical-axiswithmachinecontrolledwater fillcapableandtop-loadervertical-axis for calculating modifiedenergy factor, clotheswashers.

2.8.2.1 Standardsize clotheswasher. When the maximum water fill level isbeing tested, the test load shall be seven pounds as described in section 2.7.1. When the minimum water fill level is being tested, the
test load shall be three pounds as described in section 2.7.2.

2.8.2.2 Compactsize clotheswasher. When either the maximum or minimum
water fill levels are beingtested, the test load shall be as described in section 2.7.2.

2.8.3 Methodofloading.Load the energy testclothes by grasping them in the center, shaking them to hangloosely and then dropping them into the clothes container prior to activating the clothes washer.

2.9 Preconditioning. If the clotheswasher has not previously been tested nor filled with
water in thepreceding 96 hours, precondition itby running it through a cold rinse cycle and then draining it to insure that the hose, pump, and sump arefilled with
water.

2.10 Wash timesetting.The actual wash time (period of agitation) shall be not less than 9.75 minutes.

2.11 Agitator andspinspeedsettings. Where controls areprovided foragitation and spin speed selections, set them at the normal cycle settings. Ifsettings at the normal cycle

are not offered, set the control settings to the maximum levels permitted on the clothes washer.

3. TestMeasurements

3.1 Clothescontainer capacity.Measure the entire volume which a dry clothes load could occupy within the clothes container. according to sections 3.1.1 and 3.1.2.

3.1.1 Top-loader-vertical-axis clothes washer.Line the clothes container and agitatorwith 2 mil (0.051 mm) plastic sheet

or use some other method to prevent the
water from entering the outer tub container and into the agitator. The agitator shall be in place. Fill the clothes container with water toits uppermost edge. (This filling procedure may require overriding ofthe fill level control, or manually completing the fill to the top ofthe container after the fill sensor terminates the fill at maximum level.) Record the weight ofthe machine before filling it with water and then after filling it with
water. The clothes containercapacity is calculated as follows:



### W C= W 

### p Where:
C = capacity in cubic feet (liters). W = mass ofwater in pounds (kilograms). p = density ofwater at the measured temperature in pounds per cubic foot (kilograms per liter). 3.1.2 Front-loader andtop-loaderhorizontal-axisclothes washer.For frontloader-horizontal-axis clothes washers, position the tub and shaft axis vertically with the tub facing up.For top-loader-horizontalaxis clothes washers, position the washer in itsupright position and the centerline ofthe inner door at the top position.Line 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. Fill the clothes container with
water to its uppermost edge. (Thisfilling procedure may require overriding of the fill level control, or manually completing the fill
to the top of the container after thefill sensor terminates the fill at maximum level.) Record the weight ofthe machine before filling it with water and then after filling it with water. The clothes containercapacity is calculated as follows: 

### W C=-

## p Where:
C = capacity in cubic feet (liters). W= mass ofwater in pounds (kilograms).
p = density ofwater 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 ofthis appendix. Automatic and semi-automatic clothes washers thathave infinite or various temperature selection features that do not conform to the wash/rinse temperature combination settings ofsections 5 or 6 shall be tested atthe following temperature settings: Hottest setting available on the machine, hot (aminimum 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-heating clothes washers. 3.2.1.1 Per-cycleelectrical energy consumption.Set the waterlevel selectorat maximum fill available on the clothes washer and insert the appropriate test load, if applicable. Activate the normal cycle ofthe 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 Hotandcold waterconsumption with the water level selectoratmaximumfill available on theclothes washer,ifmanually controlled.

3.2.1.2.1 Set the water level selector at maximum fill available on the clothes washer 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 hottestTUF combination setting. For semiautomatic clothes washers, open the hot
water faucet valve completely and close the cold water faucet valve completely to achieve the hottestTUF combination setting.

3.2.1.2.3 Measure the respective number of gallons (liters) ofhot and cold water used
to fill the tub for the wash cycle.

3.2.1.2.4 Measure the respective number ofgallons (liters) ofhot and cold water used for all deep rinse cycles.

3.2.1.2.5 Measure the respective gallons (liters) ofhot and cold water used forall spray rinse cycles.

3.2.1.2.6 Forautomatic clothes washers repeat sections 3.2.1.2.3, 3.2.1.2.4, and 3.2.1.2.5 foreach ofthe other wash/rinse temperature selections available that use hot water. Forsemi-automatic clothes washers repeat sections 3.2.1.2.3. 3.2.1.2.4. and 3.2.1.2.5 forthe TUFs in section 6 with the following water faucet valve adjustments:

Faucet position

Hot valve Cold valve

Hot

................ Completely Closed. open. 

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Faucet position

Hot valve Cold valve

Warm

........... Completely Completely open. open. Cold............... Closed

......... Completely open.

3.2.1.2.7 Set the suds-saver switch to activate the suds-return. Repeat sections 3.2.1.2.3 to 3.2.1.2.5 fora Warm/Cold temperature setting.

3.2.1.3 Hotandcold waterconsumption withthe waterlevelselectoratminimumfill. Set the water level selector at minimum fill 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 Hotandcold waterconsumption forclothes washersthatincorporate apartial fillduringthe rinsecycle. When sections 3.2.1.2 and 3.2.1.3 cannot be used for clothes washers that incorporate a partial fill during the rinse cycle, activate any suds-saver switch and operate the clothes washer for the complete normal cycle at both the maximum
water fill level and the minimum water fill level for each ofthe wash/rinse temperature selections available. Measure the respective hotand cold water consumed during the complete normal cycle.

3.2.2 Water-heatingclotheswashers. For water-heating clothes washers the following temperature settings will be tested: hottest setting available 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. These temperature must be confirmed by measurement using a temperature sensing device.

3.2.2.1 Per-cycleelectrical energy consumptionatmaximumfill. Set the water level selector at maximum fill available on the clothes washer, ifmanually controlled.

3.2.2.1.1 Hottestwashatmaximumfill. Activate the machine and insert the appropriate test load, ifapplicable. Select the normal or its equivalent wash cycle. Where spin speed selectionis 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 asEhn.max

3.2.2.1.2 Hotwashatmaximumfill. Insert awater temperature sensing device inside the inner drum priorto testing. Activate the machine and insert the appropriate test load, if applicable. Select the normal or itsequivalent wash cycle. Where spin speed selection is available, set the control to its maximum setting. Set the water temperature selector tothe hot setting (a minimum of 140°F (60.0°C) and a maximum of 145°F (62.8°C)) and activate the wash cycle. Verify thewash water temperature, which must be at a minimum of 140°F (60.0°C) and a maximum of 145°F (62.8°C). Ifthe measured water temperature is not within the specified range, stop testing, adjust the temperature selector accordingly and repeat the procedure. Otherwise, proceed and complete testing. Measure and record the kilowatt-hours ofelectrical energy consumed for the complete cycle as Ehax.

3.2.2.1.3 Warmwashatmaximumfill. Repeat section 3.2.2.1.2 for a warm wash setting ata minimum of 100°F (37.8°C) and

a maximum of 105°F (40.6°C). Measure and record the kilowatt-hours ofelectrical energy consumed for the complete cycle as Ewx.

3.2.2.1.4 Coldwashatmaximumfill. Repeat section 3.2.2.1.1 for the coldestwater setting. Measure and record the kilowatthours ofelectrical energy consumed for the complete cycle as Ec.max. Ensure that the inlet water temperature is maintained per section 2.3.

3.2.2.2 Per-cyclewaterconsumptionat maximumfill. Measure the total numberof gallons (liters) ofwaterused 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 Vhtnax, Vh.mx. Vw.nx. and Vc.max.

3.2.2.3 Per-cycleelectricalenergy consumptionatminimumfill. Set the water level selector to the minimum fill position, ifmanually controlled.

3.2.2.3.1 Hottest washatminimumfill. Repeat section 3.2.2.1.1. Measure and record the kilowatt-hours of electrical energy consumed for the complete cycle as Ehtnn.

3.2.2.3.2 Hotwash atminimumfill. Repeat section 3.2.2.1.2. The hot wash setting shall be at aminimum of 140°F (60.0°C) and

a maximum of 145°F (62.80C). Measure and record the kilowatt-hours ofelectrical energy consumed for the complete cycle as Eh.in.

3.2.2.3.3 Warmwash at-minimumfill. Repeat section 3.2.2.1.2 for warm wash setting ata minimum of 100°F (37.8°C) and

a maximum of 105°F (40.6°C). Measure and record the kilowatt-hours ofelectrical energy consumed for the complete cycle as Ew,min.

3.2.2.3.4 Coldwash atminimumfill. Repeat section 3.2.2.1.1 for the coldest wash setting. Measure and record the kilowatthours ofelectrical energy consumed for the complete cycle as Ecm. Ensure that the inlet water temperature is maintained per section 2.3.

3.2.2.4 Per-cyclewaterconsumptionat minimumfill. 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 Moisturecontentoftest load.Weigh the test loads after completion oftest cycles in warm wash/cold rinse or cold wash/cold rinse temperature settingfor both maximum and minimum water fills.

3.4 Data recording.Record foreach test cycle in sections 3.2.1 through 3.3.

3.4.1 Nonwater-heating clotheswashers. 3.4.1.1 Record the kilowatt-hours of electrical energy, ME.consumed during the
test to operate the clothes washer in section 3.2.1.1.

3.4.1.2 Record the individual gallons (liters) ofhot and cold water consumption, Vhi and Vci, measured atmaximum fill level for each wash/rinse TUF combination setting in section 3.2.1.2, excluding any fresh makeup water required to complete the fill during

a suds-return cycle.

3.4.1.3 Record the individual gallons (liters) ofhot and cold water consumption, Vhj and Vcj, measured at minimum fill level for each wash/rinse TUF combination setting in section 3.2.1.3, excluding any fresh makeup waterrequired to complete the fill during

a suds-return cycle.

3.4.1.4 Record the individual gallons (liters)ofhot and cold water, ShH and ScH. measured at maximum fill for the suds-return cycle.

3.4.1.5 Record the individual gallons (liters) of hot and cold water, ShL and ScL. measured at minimum fill for the suds-return cycle.

3.4.2 Water-heating clotheswashers. 3.4.2.1 Record the kilowatt-hours of electrical energy Ehmnax. Eh,max, Ew,max. and Ecm consumed atmaximum fill level for each wash/rinse TUF combination setting in sections 3.2.2.1.1, 3.2.2.1.2, 3.2.2.1.3, and 3.2.2.1.4, respectively.

3.4.2.2 Record the total gallons (liters) of
water consumption. Vhtmax, Vh,ma. Vw.mx. and Vc,m.x measured atmaximum fill level for each wash/rinse TUF combination setting in section 3.2.2.2.

3.4.2.3 Record the kilowatt-hours of electrical energy, Ehtmin, Ehmin, Ew,min. and E,¢inconsumed atminimum fill 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, Vhmin, Vhmin, Vw,mm, and Vcmin, measured at minimum fill level for each wash/rinse TUF combination setting in section 3.2.2.4.

3.4.3 Record the weight ofthe testloads, Wmax and Wmin, after completion oftest cycles in section 3.3.

4. Calculationof Derived Results FromTest Measurements

4.1 Energyconsumption. 4.1.1 Nonwater-heatingclotheswashers. 4.1.1.1 Per-cycletemperature-weighted hotwaterconsumptionformaximumand minimum water fill levels. Calculate for the cycle under test the per-cycle temperature weighted hot water consumption for the maximum water fill level, Vhmax, and for the minimum water fill level. Vhmn, expressed in gallons per cycle (liters per cycle) and defined as:

Vhm =Xi,[Vh xTUF,]+
i=l



### X [TUFw XShH]

Where: Vhi =reported hot water consumption in gallons per cycle (liters percycle) at maximum fill for each wash/cycle TUF combination setting,as provided in section 3.4.1.2. (Ifa clothes washer is equipped with two different wash/rinse temperature selections thathave 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 ofthe two Vi's shall be used for the calculation.) TUFi= applicable temperature use factor in section 5 or 6. _I I 

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n = number ofwash/rinse TUF combination setting available to the user for the clothes washer under test. TUFw = temperature usefactor for warm wash setting.
Forclothes washers equipped with the suds-saver feature:
Xi = frequency of use without the suds-saver feature = 0.86. X2 = frequency ofuse 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 notequipped with the suds-saver feature:

X = 1.0

X

2 = 0.0
and

n Vhin = X, [VhjxTUF]+.

- j=l

X

2 [TUFW XShL]

Where: Vhj = reported hotwater consumption in gallons percycle (liters percycle) at minimum fill for each wash/rinse TUF combination setting, asprovided in section 3.4.1.3. (Ifa clothes washer is equipped with two different wash/rinse temperature selections that have the

same basic TUF label (one ofthem has its water temperature controlled by thermostatically controlled valves and the other one does not), thenthe higher of the two Vj's shall be used for the calculation.) TUFj = applicable temperature use factor in section 5 or6. ShL = fresh hot make-up water measured during suds-return cycle atminimum water fill level.

n = as defined above. TUFw = as defined above. Xi = as defined above. X2 = as defined above.

4.1.1.2 Total per-cyclehot waterenergy consumption formaximum andminimum
water filllevels. Calculate the total per-cycle hot water energy consumption for the maximum water fill level, Ema and for the minimum water level. Emin. expressed in kilowatt-hours per cycle and defined as:



### Emax =[Vhmax xTxKxMF]

Where:
T =temperature rise = 90°F (50°C). K =water specific heat = 0.00240 kWh/ (gal.°F) 10.00114 kWh/(L.°C)I. Vhmax = as defined in section 4.1.1.1. MF = multiplying factor to account for absence of test load=0.94 for top-loader vertical axis clothes washers that are

sensor filled. 1.0 for all other clothes washers and: Emin 

### =[Vhmin xTxKxMF]

Where:
T = as defined above. K = as defined above. Vhmin = as defined in section 4.1.1.1. MF= as defined in section 4.1.1.2.

4.1.1.3 Totalweightedper-cyclehotwater
energyconsumptionexpressedinkilowatthours.Calculate the total weighted per cycle hot water energy consumption, ET. expressed in kilowatt-hours percycle and defined as:



### ET =[Em XFmx]+[Emin XFmi,

Where: Fma,=usage fill factor=0.72 Fni,=usage fill factor=0.28 Emax=as defined in section 4.1.1.2. Ein=as defined in section 4.1.1.2.

4.1.1.4 Per-cyclemachineelectrical
energyconsumption.The value recorded in section 3.4.1.1 is the per-cycle machine electrical energy consumption, ME. expressed in kilowatt-hours per cycle.

4.1.1.5 Per-cyclewaterenergy consumption using gas-heatedor oil-heated
water.Calculate for the normal cycle the percycle water consumption. ETG, using gas heated or oil-heated water, expressed in BTU
per cycle (megajoules per cycle) and defined

as:



### E=E x,I 

### 3412 BTU
Ie kWh



### o 1 F3.6 MJ]
orETG = ET xx[3 MWh 

### e LkWhJ

Where:

e = nominal gas or oil water heater efficiency=0.75. ET= as defined in section 4.1.1.3.

4.1.1.6 Total per-cycle energy consumptionwhen electricallyheatedwater isused.Calculate for the normal cycle the totalper-cycle energy consumption. ETE. using electrically heated water,expressed in kilowatt-hours percycle and defined as: ETE=ET+ME Where:
ET = as defined in section 4.1.1.3 ME = as defined in section 4.1.1.4.

4.1.2 Water-heating clotheswashers. 4.1.2.1 Per-cycletemperature-weighted
energy consumption formaximum and minimum water fill levels. Calculate for the cycle under test the per-cycle temperature weighted energy consumption for the maximum water fill level. Ema.,and forthe minimum water fill level, E,i.,expressed in kilowatt-hours per cycle and defined as:

Ema = (0.05xEhmx)+(0.25xEhmax)

+(0.55 x Ew, )+(0.15 x Ecmax)

and. Emin =(0.0 Eht,min)+(0.25xEhmin)



### +(0.55x E.i) +(0.5

### xEcmin)

Where:
Eht.ma = as defined in section 3.2.2.1.1 Eh.max = as defined in section 3.2.2.1.2 Ew,ma = as defined in section 3.2.2.1.3 Ec,,x =as defined in section 3.2.2.1.4 Ehtimn = as defined in section 3.2.2.3.1 Ehnin = as defined in section 3.2.2.3.2 Ewmin = as defined in section 3.2.2.3.3 Ec.min= as defined in section 3.2.2.3.4

4.1.2.2 Totalweighted per-cycleenergy consumptionexpressedinkilowatt-hours. Calculate the total weighted per cycle energy consumption. ET. expressed in kilowatthoursper cycle and defined as:

ET = [Ema XFx ]+[Emin XFmin]
Where:
Fmax = as defined in section 4.1.1.3. Fmi, = as defined in section 4.1.1.3. Emax = as defined in section 4.1.2.1. Emin= as defined in section 4.1.2.1

4.2 Per-cycleenergyconsumptionfor removalofmoisture from testload.Calculate the per-cycle energy required to remove the moisture ofthe test load, moisture removal
energy. Hv, expressed in kilowatt-hours per cycle and defined as:

Hv =(W2-WI)XDEF
Where:
W2 = Weighted test load after normal cycles. in Ibs (kg). = [(WmaxxFmax)+(WminXFin)]. Wmax = as defined in section 3.4.3. Wmin = as defined in section 3.4.3. Fmax = as defined in section 4.1.1.3. Fmin = 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. = 3 Ibs (1.36 kg) for compact size clothes

washers.
DEF= nominal energy required for a clothes dryer to remove moisture from clothes, 0.5kWh/lbs (1.1 kWh/kg).
4.3 Water consumption. 4.3.1 Nonwater-heating clotheswashers. 4.3.1.1 Per-cycle temperature-weighted
waterconsumption formaximum and minimum water fill levels. Calculate for the cycle under test the per-cycle temperatureweighted total water consumption for the maximum water fill level. Qma.,and for the minimum water fill level, Qmi,,expressed in gallons per cycle (liters percycle) and defined as:



### Qma =X,[(Vh, +Vc)xTUFi]

i=l



### +X 2 

### [TUF x(ShH +ScH)]

Where: 

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Vhi = hot water consumption in gallons percycle at maximum fill for each wash/ rinseTUF combination setting, as provided in section 3.4.1.2. Vci =cold water consumption in gallons percycle at maximum fill for each wash/ rinseTUF combination setting, as provided in section 3.4.1.2. TUFi = applicable temperature use factor in section 5 or 6.

n = number ofwash/rinse TUF combination settings available to the user for the clothes washer under test. TUFw = temperature use factor for warm wash setting.
For clothes washers equipped with sudssaver feature:
X1 = frequency ofuse without suds-saver feature=0.86 X2 = frequency ofuse with suds-saver feature=0.14 ShH = fresh hotwater make-up measured during suds-return cycle at maximum
water fill level. ScH = fresh cold water make-up measured during suds-return cycle at maximum water fill level.
For clothes washers not equipped with suds-saver feature:



### X, = 1.0
X, = 0.0

and

Qinn =X I [(Vhj+ Vcj)X TUF
j=l

+X2[TUFx(ShL +SCL)]
Where: Vhj = hot water consumption in gallons per cycle (iters per cycle) atminimum fill for each wash/rinse TUF combination setting, as provided in section 3.4.1.3. Vcj = cold water consumption in gallons per cycle (liters per cycle) atminimum fill for each wash/rinse TUF combination setting, as provided in section 3.4.1.3. TUFj = applicable temperature use factor in section 5 or 6. ShL = fresh hot and cold make-up water measured during suds-return cycle at minimum water fill level. SCL = fresh hot and cold make-up water measured during suds-return cycle at minimum water fill level.

n= as defined in section 4.3.1.1. TUFw = as defined in section 4.3.1.1. Xi = as defined in section 4.3.1.1. X2 = as defined in section 4.3.1.1.

4.3.1.2 Total weightedper-cyclewater consumption.Calculate the total weighted percycle water consumption. QT, expressed in gallons percycle (liters per cycle) and defined as:

QT = [Qmax X max]+ [Qmin XFmin]
Where:
Fmax = asdefined in section 4.1.1.3. Fmin = as defined in section 4.1.1.3. Qmax = as defined in section 4.3.1.1. Qmin = as defined in section 4.3.1.1.

4.3.2 Water-heatingclotheswashers. 4.3.2.1 Per-cycletemperature-weighted
waterconsumption for maximum and minimum water fill levels.Calculate for the cycle under test the per-cycle, temperature weighted total water consumption for the maximum water fill level, Qma. and for the minimum water fill level, Qmin. expressed in gallons per cycle (liters percycle) and defined as:



### Q = (0.05oxV,,)+(0.25 V,, )
+(0.55XV

, )+(0.15 

### x V, ax)

and,

Qmin =(0.05 x Vht,i) +(0.25 x Vhmi)

+(0.55 X Vw, ) +(0.15 X Vmin)

Where:
Vh.mx = as defined in section 3.2.2.2. Vhoax = as defined in section 3.2.2.2. Vw,m = as defined in section 3.2.2.2. Vcax = as defined in section 3.2.2.2. Vhtin = as defined in section 3.2.2.4. Vh,min = as defined in section 3.2.2.4. Vwin = as defined in section 3.2.2.4. Vci, = as defined in section 3.2.2.4.

4.3.2.2 Total weightedper-cyclewater consumption.Calculate the total weighted percycle water consumption. Qr,expressed in gallons per cycle (liters per cycle) and defined as:

QT = [Qmax X Fmax]+[Qmin XFmin]
Where: 

### Fm = as defined in section 4.1.1.3. Fmi = as defined in section 4.1.1.3. Qmax = as defined in section 4.3.2.1. Qmin = as defined in section 4.3.2.1.

4.3.3 Waterconsumptionfactor. Calculate the water consumption factor. WCF, expressed in cubic feet pergallon per cycle (liter perliter percycle), as:


### C WCF =
- QT Where:
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 Modifiedenergy factor. 4.4.1 Nonwater-heating clothes washers. Calculate the modified energy factor, MEF. expressed in cubic feet perkilowatt-hours percycle (liters per kilowatt-hours percycle).

as:

MEF = (ME +ET +H)
Where:
C = as defined insection 3.1.1 or 3.1.2. ME = as defined in section 4.1.1.4. ET = as defined in section 4.1.1.3. Hv = as defined insection 4.2. 4.4.2 Water-heatingclothes washers. Calculate the modified energy factor. MEF. expressed in cubic feetper kilowatt-hours per cycle (liters perkilowatt-hours per cycle).

as:


### C MEF = (ET +H,)
Where: C = as defined in section 3.1.1 or 3.1.2. ET= as defined in section 4.1.2.2. Hv = as defined in section 4.2. 5. ApplicableTemperature UseFactors for DeterminingHot Water Usage for Various Wash/Rinse TemperatureSelections for All Automatic Clothes Washers

5.1 Five-temperature selection (n=5).

Wash/rinse temperature Temprature setting (UF) (TUF)

Hot/Warm

.............................. 0.18 Hot/Cold

................................ .12 Warm/Warm

.......................... .30 Warm/Cold

............................ .25 Cold/Cold

............................... 15

5.2 Four-temperature selection(n=4).

Wash/rinse temperature Temperature se~tting use factor setting (TUF)

Alternate I:

Hot/Warm

.......................... 0.18 Hot/Cold

........................... .12 Warm/Cold

........................ .55 Cold/Cold

.......................... .15 Alternate II:

Hot/Warm

.......................... 0.18 Hot/Cold

........................... .12 Warm/Warm

...................... .30 Warm/Cold

........................ .40 Alternate III:

Hot/Cold

....................... 0.12 WarmWarm

...................... .18 Warm/Cold

........................ .55 Cold/Cold

........................... 15

5.3 Three-temperature selection (n=3).

Wash/rinse temperature Temerature use factor setting (TF) (TUF)

Altemate I:

Hot/Warm

.......................... 0.30 Warm/Cold

........................ .55 Cold/Cold

.......................... .15 Altemate II:

Hot/Cold

............................ 0.30 Warm/Cold

........................ .55 Cold/Cold

........................... 15 Alternate III:

Hot/Cold

............................ 0.30 Warm/Warm

....................... 55 Cold/Cold

........................... 15

6.ApplicableTemperature UseFactors for Determining Hot Water Usagefor Various Wash/RinseTemperatureSettings forAll Semi-AutomaticClothes Washers

6.1 Six-temperaturesettings (n=6). 

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

Wash/rinse temperature use factor setting (TUF)

Hot/Hot

.................................. .15 Hot/Warm

.............................. .09 Hot/Cold

................................ .06 Warm/Warm

.......................... .42 Warm/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]

BILUNG CODE 6450-n-P 

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