# NlST 

# Proposed Provisionsfor 

# a Rulemaking 

# on Test Proceduresfor 

# Commercial Water Heaters, Boilers, Furnaces, Air Conditioners and 

## Heat Pumps

FILE Q:\dataiee40\ee-43\43w,mon~\ni~trg,\nidrept.wpd October 4 1998(7:MPM) 

## NIST Proposed Provisions for a Rulemaking on Test Procedures for Commercial Water Heaters, Boilers, Furnaces, Air Conditioners and Heat Pumps

FILE Q:'<lata\ee-40\ee-43\43common\nasseri\nistrep\nistreptwpd October 6, 1998 (7:04PM)

## Table of Contents
1.0 Background

........................................................ 

### 1

....................................................... 

### 2.0 Introduction 2

.......................................... 

### 2.1 April 1998'tVorkshop 2 2.2 CuventReport

............................................... 

### 2

................................. 

### 3.0 Key Issues and 

### NIST Recommendations 3 

### 3.1 Commercial Equipment Sampling. Certification and Enforcement

.........

### 3 3.2 

### Test Protocols for CommercialWater Heaters. Instantaneous Water Heater.

............................. 

### and Vnfired I-IotWater Storage Tanks 6

................... 

### 3.3 Test Protocols for Commercial "Packaged" Boilers 8

............................ 

### 3.4 Test Protocols for WanAir Ftmaces 11 3.5 Test Protocols for Commerciaf Air Conditioners and Heat Pumps

........ 

### 12

.................................... 

### 4.0 DiscussionsofProposed Provisions 13

.......................... 3.1 

### Sampling Certification and Enforcement 13 4.1. 1 General Discussions

.................................... 

### 13

................................. 

### 4.1.2 Certification Procedures 15 4.1.3 Alters~ative Methods forDeterminingERciency

................ 

### 16 3.7.4 Voluntary Independent Certification 13rogram

................. 

### 16

................................. 

### 4.1.5 Enforcement Procedures 17 4.1.6 Proposed Sampling SchemeforEnforcement Testing

........... 

### 17 4.2 Test Protocols for Commercial Water Heaters. and Unfired Hot Water StorageTanks

.............................................. 

### 18

.................................... 

### 4.2.1 General Disc~~ssions 18

................... 

### 4.2.2 Com.mercj a1 Water Heater Test Procedure 16 3.2'3, Commercial 'Ijnfired Storage 'rank 'I'est Procedure

............. 

### 20

........ 

### 4.2.4 Proposed Test Procedures for Commercial Water Heaters 21

.................. 

### 4.3 Test Protocols for Commercial "Packaged" Boilers 22

.................................... 

### 4.3.1 General Discussions 22 4.3.2 Test Procedures for Measurement ofEnergy Efficiency

.........

### 23 4.3.3 Packaged Boiler Used As Hot Water 

### Srlpply Boiler

............

### 31

.... 

### 4.3.4 Proposed Test Proceduresfor Cornmercjal "Packaged Boilers" 31

.......................... 

### 4.4 Test Protocolsfor Commercial Furnaces 32

.................................... 

### 4.4.1 General Discussions 32

................... 

### 4.4.2 

## PI SI-RAE90.3 

### Referenced Test Standards 32

........................... 

### 4.4.3 Definition of Therrrial Efficiency 32 4.4.4 Test Procedures for the Pvfeasurement ofEnergy Efficiency

....... 

### 33 4.4.5 Proposed Test Procedures for Commercial Furnaces

............

### 33

FILE Q:Llata\ee4O\ee-43\4bommm\nasseriLusSep\nistrepttwpd October6. 1998(7:MPM) 

### Table ofContents
1.0 Background

.............**~** 

### . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Introduction

....................................................... 2 2.1 April 1998 \Vorkshop

.......................................... 2 2.2 Current Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3.0 Key Issues and NIST Recommendations

................................. 3 3.1 Commercial Equipment Sampling, Certification and Enforcement

......... 3 3.2 Test Protocols for Commercial Water Heaters, Instantaneous Water Heater, and Unfired Hot \Vater Storage Tanks

............................. 6 3.3 Test Protocols for Commercial "Packaged" Boilers

................... 8 3.4 Test Protocols for Warm A...ir Furnaces

............................ 11 3.5 Test Protocols for Commercial Air Conditioners and Heat Pumps

........ 12 4.0 Discussions ofProposed Provisions

.................................... 13 4.1 Sampling, Certification and Enforcement

.......................... 13 4.1.1 General Discussions

.................................... 13 4.1.2 Certification Procedures

................................. 15 4.1.3 Altemative Methods for Detennining Eftlciency

............... 16 4.1.4 Voluntary Independent Certification Program

................. 16 4.1.5 Enforcement Procedures

................................. 17 4.1.6 Proposed Sampling Scheme for Enforcement Testing

........... 17 4.2 Test Protocols for Commercial Water Heaters, and Unfired Hot \Vater Storage Tanks

.............................................. 18 4.2.1 General Discussions

.................................... 18 4.2.2 Commercial Water Heater Test Procedure

................... 18 4.2.3" 

### Commercial Untired Storage Tank Test Procedure

............. 20 

### 4.2.4 Proposed Test Procedures for Commercial Water Heaters

........ 21 4.3 Test Protocols for Commercial "Packaged" Boilers

.................. 22 4.3.1 General Discussions

.................................... 22 4.3.2 Test Procedures for Measurement ofEnergy Efficiency

......... 27 4.3.3 Packaged Boiler Used As Hot Water Supply Boi1er

............. 31 4.3.4 Proposed Test Procedures for Commercial "Packaged Boilers"

.... 31 4.4 Test Protocols for Commercial Furnaces

.......................... 32 

### 4.4.1 General Discussions

.................................... 32 4.4.2 ASHRAE 

### 90.1 Referenced Test Standards

................... 32 4.4.3 Definition ofThermal Efficiency

........................... 32 4.4.4 Test Procedures for the Measurement ofEnergy Efficiency

....... 33 4.4.5 Proposed Test Procedures for Commercial Furnaces

............ 33

FILE Q:'datalee-40Iee-43143cornmon'nassen'nistrep'nistrept.wpd October 6,1998 (7:04PM)

### 4.5 

### Test Protocols for Commercial Air Conditioners and Heat Pumps

........

### 34 4.5.1 

### General Discussions

.................................... 

### 34 4.5.2 

### Heat purnps with heating-only function

...................... 

### 34

........................... 

### 4.5.3 

### Computerroom air conditioners 34 4.5.4* 

### Proposed Test Procedures for Commercial Air 

### Conditionersand HeatRlmps

.......................................... 

### 36

................................................... 

### 5.0 

### MilestoileChart 37


### Appendix A: 

### Compliance Certificationand Enforcement SstnplingProceduses

........

### 39

........................... 

### Appendix B: 

### Sampling :Planfor Enforcement 

### 'Testing 47 Appendix C: 

### Commercial Water Hea.terTest Procedures

........................

### 54 Appendix 

### D: Unfireb I-IotWater Storage Tanks Test Procedures

.................. 

### 57

..................... 

### Appendix 

### E: Commercial "Packaged" Boiler Test Procedures 61.

............................. 

### Appendix

### F: CommercialFurnace Test Procedures 63 Appendix 

### G: Comnlercial 

### Air Conditionersand Heat Rrnlps Test Procedures

.........

### 65

FILE Q:~ta\ee-40\ee-43\43comm~Ltiskep~ept.wpd October 6. 1998(7:04PM) 4.5 Test Protocols for Commercial Air Conditioners and Heat Pumps

........ 34 4.5.1 4.5.2 4.5.3 4.5.4" General Discussions

.................................... 34 Heat pumps with heating-only function

...................... 34 Computer room air conditioners

........................... 34 Proposed Test Procedures for Commercial Air Conditioners and Heat Pumps

.......................................... 36 5.0 Milestone Chart

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Appendix A: Compliance Certification and Enforcement Sampling Procedures

........ 39 Appendix B: Sampling Plan for Enforcement Testing

........................... 47 Appendix C: Commercial \Vater Heater Test Procedures

........................ 54 Appendix D: Unfi.red Hot Water Storage Tanks Test Procedures

.................. 57 Appendix E: Commercial "Packaged" Boiler Test Procedures

..................... 61 Appendix F: Commercial Furnace Test Procedures

............................. 63 Appendix G: Commercial Air Conditioners and Heat Pumps Test Procedures

......... 65

FILE Q:ldatalee-40Iee·43143common'nasseri'nistreplnistrept.wpd October 6, 1998 (7:04PM)

### 1.0 

### Background 

### Part B 

### of Title flI 

### of the Energy Policy and Conservation Act (TPCA) of 1975,Pub. L. 

### 94-163, as amended. by the National Energy Conservation Policy Ad

### of 1978 

### (KECPA), 

### Pub I.,.

### 95-619, the National Appliance Energy Consersatio~~ Act of 1987 (NAEC'A),

### Put?.L. 1

### 00- 12,the Kational ApplianceEnergy Consen;atioil Amendments of 1988(NAECA 19881,Pub L. 

### 100-357, and the Energ Prslicy Act of 1993(EPAct); Pub 

### L 102-486,

### established the Energy Conservation Program for Consumer Products other than Autornobiles. Pan 3 

### of Tjt3e liV 

### of NECP.4 amei~ded EPGA 

### to add "Energy EfEciency of Industrial Equipment," which includes cominercial package air conditioningand heating equipment,packaged terminal air conditioners and heat pumps, warm air furnaces,packaged boilers, storagewater heaters, instantaneous water heaters, and unfired hot .\waterstorage tanks EPAct also amended EPCA -4th respect to these eqtlipment; providing definitions, test procedtires, labelingprovisions, enerm conservation standards, and compliarlcecertii'rcation requirements in various sections. The Department of Energy "ns an energy conservatior~ program for consumer products, conducted pursuant @

### Part 

### B of Title 

### III ofEPCA, 32 

### U.S.C. 6291

### - 6309.UnderEPCA, the consumer appliance standardsprogram essentially consists ofthree parts: Test Procedures; Federal energy conservation standards; certification and enforcementprocedures.The 

### program is codified in Title 10ofthe Code of Federal l<egulatjons,part 430--Energy Conservation Program for Consumer Products. Since 10 CFR 

### part 430 covers consumerproducts as disrfitlctfrom commercial and industrial equipment, the Department of Energy is creating a new pan 43 

### 1in the Code ofFederal Readations (10 CFR part 43

### I), 

### Energy ConservationProgram for Commercial and Industrial Equipment, to cover certain commercial and industrial eyuipme~tt covered under the Act These will includecommercial heating and 

### air-cmdirioning equipment atld water heaters This new commercial 

### and industrial equipment program will 

### consist ofthe same elements as the program covering consumer products: Test Procedures;Federal energy conservation standards, labeling; and certification and enfbrcement.

FILE Q:~ta\ee-40\ee-43\43commonM\ruskep\nistrept.~d October 6,1998 (7:MPM) 

### 1.0 Background Part B ofTitle 

### III ofthe Energy Policy and Conservation Act (EpeA) of 1975, Pub. L. 94-163,
as amended, by the National Energy Conservation Policy Act of 1978 (NECPA), Pub. L. 95-619, the National Appliance Energy Conservation Act of 1987 (NAECA), Pub. L. 100-12, the National Appliance Energy Conservation Amendments of 1988 (NAECA 1988), Pub. L. 100-357, and the Energy Policy Act of 1992 (EPAct), Pub. L. 102-486, established the Energy Conservation Program for Consumer Products other than Automobiles. Pari 3 ofTitle IV of NECPA amended EPCA to add' 'Energy Efficiency ofIndustrial Equipment," which includes commercial package air conditioning and heating equipment, packaged terminal air conditioners and heat pumps, warm air furnaces, packaged boilers, storage water heaters, instantaneous water heaters, and unfired hot water storage tanks. EPAct also an1ended EPCA. with respect to these equipment, providing definitions, test procedures, labeling provisions, energy conservation standards, and compliance certification requirements in various sections. The Department ofEnergy has an energy conservation program for consumer products, conducted pursuant to Part B ofTitle 

### III ofEPCA, 42 

### V.S.c. 6291- 6309. UnderEPCA, the
consumer appliance standards program essentially consists ofthree parts: Test Procedures; Federal energy conservation standards; certification and enforcement procedures. The program is codified in Title 10 ofthe Code ofFederal Regulations, part 430--Energy Conservation Program for Consumer Products. Since 10 CFR part 430 covers consumer products as distinct from commercial and industrial equipment, the Department ofEnerbl)' is creating a new part 431 in the Code ofFederal Regulations (10 CFR part 431), Energy Conservation Program for Commercial and Industrial Equipment, to cover certain commercial and industrial equipment covered under the Act. These 

### win include commercial heating and air-conditioning equipment and water heaters. This new commercial and industrial equipment program will consist ofthe same elements as the program covering consumer products: Test Procedures; Federal energy conservation standards; labeling; and certification and enforcement.

1 FILE Q:\datalee-40Iee-43143commoolnasserilnistreplnistrept.wpd October 6,1998 (7:04PM)

### 2.0 

### Introduction 

### The Depament ofEnergy (DOE) 

### is currently cfraftingproposed rules to implement the Energy Policy and ConservationAct (EPCA), 42 

### L1.S.C 63 14, 

### provisior~s for energy eficiency test procedures and standard compliance concerning cominerciat water heaters, boilers, furnaces, air conditioilersand heat pun~ps. While EPCA calls for the adoption of American Sociev of Heating; Refrigerating and Air-ConditioningEngineers,hc.(ASHR,E) Standard 90.1, several issues need tobe resolved concerninghow the Standard should be interpreted and applied. 2.1 

### April 1998 

### Workshop 

### On April 14

### and 15, 

### 1998,DOE 

### cor~veiled a public tvorkshop to solicit fiom interested parlies views and informati& that would aid in the deveiopmentofthese rules, and it requested comments on a number of specific issues, including the most appropriate interpretation of ASl3XA.E Standard 90.1 

### as it appliesto the covered eyuiprnent, as well as the nlost cost- effective and reliable regimesfor sampling, certification and enforcement Statementsreceived duringthe public u7orkshop and witten comments afiertvasds have helped to refine the issuesinvolved in this rulemaking and haveprovided useful information contributingto their resolution. 2.2 

### Current 

### Report
Since the April 1998 workshop; DOE and the National Institutefor Standards and Technology 

### (NIST)havebeen workingtogether to addressthe issues and to outline the test methods and other provisionsthat might constituteprovisions of the proposed rules. The result is a set of recomnlendationsby XIST, contained in this report. This report is expected to senreas a basis for discussionsdtiriilg a second workshop to be held on October 13, 

### 1998,in orderto elicit fi~rther views and information from interested parties. DOE'S objective isto air NIST's recommendatjons, as they appear later in this repox-r, and to seek reactions from the pariicipai~ts that will aid in cmsidering whether and in what fom~ to include the recom~nendations in the corresponding notices ofproposed ruleinaking. The discussed issuesoarelisted and summarizedwithin Section 3 

### and detailed discussions of individi~al issues appear in Section 4, 

### Proposed Provisions.For each covered product category, NIST has developed 

### a discussion 

### ofthe related issues, followed by recommendeduniform test methods that reflect staffthinkii~g OII 

### how the issues should be resolved.A 

### subsection also covers the complianceceriification and ellforcement sampling procedures,wllich ~7~uld apply generally to all ofthe equipment categories. 

### A milestone 

### chart, summarizingthe steps leadingto 

### the publication ofthe final rule and including theprojected time line, appears in Section 5. 

### The draft CFR language for the test procedures ar~d samplingprovisions appear in the Appendices.

FILE Q:\data\ee-lO\ee-43\4Xomon~Lustrep\m'rnept.wpd October 6,1998 (7:MPM) 2.0 Introduction The Department ofEnergy (DOE) is currently drafting proposed rules to implement the Energy Policy and Conservation Act (EPCA), 42 U.S.c. 6314, provisions for energy efficiency test procedures and standard compliance concerning commercial water heaters, boilers, furnaces, air conditioners and heat pumps. While EPCA calls for the adoption ofAmerican Society ofHeating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE) Standard 90.1, several issues need to be resolved concerning how the Standard should be interpreted and applied. 2.1 

### April 1998 WOI-kshop On April 14 and 15, 1998, DOE convened a public \vorkshop to solicit from interested parties views and infonnation that would aid in the development ofthese rules, and it requested comments on a number ofspecific issues, including the most appropriate interpretation of ASHRAE Standard 90.1 as it applies to the covered equipment, as well as the most cost- effective and reliable regimes for sampling, certification and enforcement. Statements received during the public workshop and \witten comments afterwards have helped to reHne the issues involved in this rulemaking and have provided useful information contributing to their resolution. 2.2 Current Report
Since the April 1998 workshop, DOE and the National Institute for Standards and Technology (NIST) have been working together to address the issues and to outline the test methods and other provisions that might constitute provisions ofthe proposed rules. The result is a set of recommendations by NIST, contained in this report. This report is expected to serve as a basis for discussions during a second workshop to be held on October 13, 1998, in order to elicit further views and information from interested panies. DOE's objective is to air NISI's recommendations, as they appear later in this report, and to seek reactions from the panicipants that will aid in considering whether and in what foml to include the recommendations in the corresponding notices ofproposed rulemaking. The discussed issue&.are listed and summarized within Section 3 and detailed discussions of individual issues appear in Section 4, Proposed Provisions. For each covered product category, NIST has developed a discussion ofthe related issues, foHowed by recommended uniform test methods that retlect staffthinking on how the issues should be resolved. A subsection also covers the compliance certification and enforcement sampling procedures, which would apply generally to all ofthe equipment categories. A milestone chart, summarizing the steps leading to the publication ofthe final rule and including the projected time line, appears in Section 5. The draft CFR language for the test procedures and sampling provisions appear in the Appendices.

2 FILE Q:ldata\ee-401ee-43143commonlnasserilnistreplnistrept.wpd Ocrober 6.1998 (7:04PM)

### 3.0 

### Key Issues and 

### NHST Recornmendati~ns This section containsa summary ofkey issues discussed duringthe April 1998

### workshop or raised in 

### the witten cornments afterwards, along with NNlST recommendatjon concerning each issue. Individual issues an8recommendatj ons are discussed at geater l 

### ength ii~ 

### the nuin

### bered secaions that are referred. 3.1 

### Commercial Equipment Sampling, Certification a13dEnforcensenit 

### Co~npliance Certification

FILE Q:bta\eiZO\ee-43\43comon~~s0epinimept.wpd October 6,1998 (7:04PM 

### Issire

I 

### Where sllouldtestins be performed and by 

### whon~?

e 

### What is the appropriate sample size for each product tobe tested?

8 

### How should sampleunits be selected?

a 

### KHST Recommendatiun 

## * Due to the unique characteristics of con~mercial H\iAC &: 

### water heating equipment, arr alternativeapproach to the current compliance testing procedure for 

### consumer products, is

### being proposeci (See 4.1 

### 1)

e 

### Adopr a 

### certificationplm 

### which incorporates the determinationof 

### efficiency based on testing conductedby 

### or for the manilfacturer and reported to 

### DOE, either directly or through a designated industry organization See 4.1.2)

6 

### NSTrecommends incorporatinga provisjon for volunmry independent certification program of covered equipment,ilnpleinented at the discretion ol

### DOE. (See 4.1 4) 

## * 'I'l~e number of units to be tested, and the metliod for determining 

### the mean eaciency 

### are leftto the discretion of the manufacturer. However, alJ test results and related anafysisused 

### in the deternlinationofthe mean must be maintained by 

### the manufacturer as 

### a permanent 

### record (See 4 1.2) 

## * The individual units tested sllatl be representative ofthe basic model, and a sufficientnumber shall be tested to ensure &at an accurate estimate ofthe 3.0 Key Issues and NIST Recommendations This section contains a summary ofkey issues discussed during the April 1998 workshop or raised in the vvntten comments afterwards, along \\1th NIST recommendation concerning each issue. Individual issues andrecommendations are discussed at greater length in the numbered sections that are referred. 3.1 

### Commercial Equipment Sampling, Certification and Enforcement Compliance Certification 

### Issue 

## • Where should testing be perfonned and by 

# • \vhom?



## •

<i> 

## •



## • What is the appropriate san1ple size for each 

## • product to be tested?



## • How should sample units be selected? 

# •

<i>

3 

### NIST Recommendation Due to the unique characteristics of commercial HV AC & water heating equipment, an alternative approach to the current compliance testing procedure for consumer products, is being proposed. (See 4.1.1) Adopt a certification plan which incorporates the detennination of efficiency based on testing conducted by
or for the manufacturer and reported to DOE, either directly or through a designated industry organization. (See 4.1.2) NIST recommends incorporating a provision for voluntary independent certification program ofcovered equipment, implemented at the discretion ofDOE. (See 4.1.4)

The number ofunits to be tested, and the method for detennining the mean efficiency are left to the discretion ofthe manufacturer. However, aU test results and related analysis used in the determination ofthe mean must be maintained by the manufacturer as a pennanent record. (See 4.1.2)

The individual units tested shall be representative ofthe basic modeL and a sufficient number shaH be tested to ensure that an accurate estimate ofthe

FILE Q:ldata\ee-40Iee-43143common'rulsseri'nistrep'nislrept.wpd October 6, 1998 (7:04PM)

### Enforcement Sampling 

## * E-Towshould compliance be determined from test results, e.g.by employing arithmetic averagng or statistical confidence intervals?



## * Should derating or other special adjusirnent factors be used'?



## * Is simulationtesting a valid approach? Slt~ould limitsbe placed on its use'? mean efficiency ofthe basic rnodei can be determined. (See 4.

### I .2) 

## * The value for ef3fidency shall be that which the manufacturer detemirmestobe the mean for all ofthe units ofthat basic model, using any valid statistical method. and shall be based on the results oftesting in accordance with the applicable test procedure (See 4.1.2)

o 

### No derating or special adjustments recoxnmended. except for the purpose pE verification testing. (See 4.1.4) 

## * The ej'ficiencysf 

### a basic rnodet could be determined using analyticai procedures such as computermodeling or other approaches, as long as those grocedtlres have been verified and validated using testing results. (See 4.1 3) 

### Written documentation demonstrating the validation of such analytical procedures must be maintained as a pelmanent record, and must be approved by a registered professional engineer. (See 4.1.3)

FILE Q:Llata\ee-40\~ee-43\4k~mon~hskgi\nistrept.wpd Octobei 6,1998(7:04PM) 

### Issi~e


# . * Shouldthe scheme applied in enforcement differfrom that used for compliance?

v

I 

## * Are special provisionsneeded for very 

### fage capacity, site-assembled,or low production quantity units' Can equipmentbe grouped as rnjnor variations or1 a inore limited number of 

### KIST

### Recommendation


# . Keep essel~tially the same enforcerner~t regulations for commercid HVAC & 

### water heating equipment 

### as are in place for other covered products. ?'he exceptions appearin the next issue. (See 4.1.5) 

### * Allow special provisions for equipment which are manufactured in very small quantities, orwhich are very 

### largein sjze



### -Ifthe total number 

### of availableunits of a 

# • How should compliance be determined from test results, e.g. by employing arithmetic averaging or statistical confidence intervals?



## • Should derating or other special adjustment factors be used?



## • Is simulation**te~ting** a valid approach? Should limits be placed on its use?

Enforcement Sampling 

### Issue 

## • Should the scheme applied in enforcement differ from that used for compliance?



# ..

• Are special provisions needed for very large capacity, site-assembled, or low production quantity units? 

## • Can equipment be grouped as minor variations on a more limited number of

4 mean efficiency ofthe basic model can be detennined. (See 4.1.2) 

## • The value for et11ciency shall be that which the manufacturer detem1ines to be the mean for all ofthe units ofthat basic model, using any valid statistical method, and shall be based on the results oftesting in accordance with the applicable test procedure. (See 4.1.2)



## • No derating or special adjustments recommended, except for the purpose pf verification testing. (See 4.1.4)



# • The efficiency ofa basic model could be determined using analytical procedures such as computer modeling or other approaches, as long as those procedures have been verified and validated using testing results. (See 4.1.3) 

## • Written documentation demonstrating the validation ofsuch analytical procedures must be maintained as a permanent record, and must be approved by a registered. professional engineer. (See 4.1.3)



### NIST Recommendation 

# • Keep essentially the same enforcement regulations for commercial HV AC 

### & water heating equipment as are in place for other covered products. The exceptions appear in the next issue. (See 4.1.5) 

## • Allow special provisions for equipment which are manufactured in very small quantities, orwhich are very large in size.

- Ifthe total number ofavailable units ofa

FILE Q:ldatalee-40Iee·43143commonlnasserilnistreplnistreptwpd October 6, 1998 (7:04PM)FILE Q:~tl\ee-4O\ee-43\43commm~seriLu~trep~s(rep~d October6,1998 (7:04PM) 

### basic models? 

### lf' so, how 

### many modeis need tobe tested, 

### and what is the best way to 

### extrapolate the results to other equipment 

### ~4 thirr a 

### group?

Should the enfotcement samplingplan be used to deterninethe 

### validity oflabeling representations? basic mode[ involved 

### in an eitlforcemei~t action is less than four, then all ofthe units shall be tested f

### See 4.l.S)

- 

### ian exception would

### be available

### for veiy 

### large units 

### on a case-by-case basis. such that only 

### a single tlnit 

### would be tested.(Sce 4 

### 1.5) 

## * Not an 

### issuein 

### the absence of 

### a labeling rule. basic models? Ifso, how many models need to be tested, and what is the best way to extrapolate the results to other equipment v,rithin a group?



## • Should the enfol-cement sampling plan be used to detem1ine the validity oflabeling representations?

5 basic model involved in an enforcement action is less than four, then all ofthe units shall be tested. (See 4.1.5)

- A.n exception would be available for



## • very large units on a case-by-case basis, such that only a single unit would be tested.(See 4.1.5)

Not an issue in the absence ofa Jabeling rule.

FILE Q:ldatalee-40Iee.43143connnon'nasserilnistreplnistreptwpd October 6,1998 (7:04PM)

### 3.2 

### Test 

### Protoccels for Commercial Water Heaters, InstantaneousWater Heaters, and Unfired Hot Water Storage Tanks

Clarific.ationof Coverage and Definitions

6 FILE Q:\data\ee-40\ee-43\4Xommon~\nisaep~sfleptptwpd Octoba6,1998 (7:04PM) 

### issue

e 

### General: iVould it be beneficid to include a table similarin format to Table 7.2.2

### of 90 1

### R in the proposed rule 

### in order 

### to clarify the categories of coveragefor commercial water heaters'? 

## * Ge~erat. ANSI 221.15

### 3-1990 has been revised The current version, 22

### 1

### .10.3- 1993, contains

### no modification ofthe test procedures for thennal efficiency and standby loss. Should the reference to this 

### test procedure in Table 1

### 1 1 

### be updated to the 1993

### version?

Electric StorageWater Heaters: Ts 

### there any reason why 

### the ANSI: 

### test procedure should not be applicable to electric storage water heaters with input ratings between 12 

### and 22 

### kN1? 

## * Gas-Fired InstantaneousWater Heaters. Should Table 11.1

### be 

### clarified to indicate that on1

### y gas-fired insxantaneouswater heaterswith input ratings greater 

### than 200,000 B&'h 

### are EPAct-covered equipment3


### * Oil-Fired Instar~taneous Water Heaters: S11ould Table 11.1

### be clarified to indicate that all oil-fired instantaneouswater heaters with 

### input 

### ratings greater than 21

### 0,000 Btu:'h 

### areEPAct-covered equipment'?
0 

### NIIST 

### Recamrnendatisra

e 

### rZ tablewill be provided to shour EPActcovered product and requirements as is done in 10

### CFR 430 subsection 32

e 

### ANSI 22

### 1.10.3-1993incorpora~e by reference as indicated by 

### ASHRAE Standard 90.1-1 

### 989 Addendum n.



## * No.

Instantaneousu7ater heaters designed to heat water to temperatures of 180°For higher may be subjecxed to Be 

### energy consen~ation standardsof conmitnercid equipment regardless ofthe input 

### rating. (See 4.2 2)



### Ii~stantaneous water heaters designed to heat water to temperatures of 180°F

### or higher may be subjecxedto the energy cortsen~atioa startdardsof comntercid equipment regardless ofthe input rating (See 4.2.2) 

### 3.2 Test Protocols for Commercial Water IIeaters, Instantaneous Water Heaters, and Unfired Hot Water Storage Tanks



# .. Clarification ofCoverage and Definitions Issue 

# • General: \Vould it be beneficial to include a table similar in format to Table 7.2.2 of 90.1 R in the proposed rule in order to clarify the categories ofcoverage for commercial water heaters?



# • General: ANSI Z21.1O.3-1990 has been revised. The current version, Z21.10.3- 1993, contains no modification ofthe test procedures for thermal efficiency and standby loss. Should the reference to this test procedure in Table 11.1 be updated to the 1993 version?



## • Electric Storage Water Heaters: Is there any reason why the ANSl test procedure should not be applicable to electric storage water heaters with input ratings between 12 and 22 kW?



# • Gas-Fired Instantaneous Water Heaters: Should Table 11.1 be clarified to indicate that only gas-fired instantaneous water heaters with input ratings greater than 200,000 BtuJh are EPAct..:covered equipment?



## • Oil-Fired Instantaneous WaterHeaters: Should Table 11.1 be clarified to indicate that all oil-fired instantaneous water heaters vvith input ratings greater than 210,000 Btu!h are EPAct-covered equipment?



# ..

6 

## •

•

•



## •

• NIST Recommendation A table will be provided to show EPActcovered product and requirements as is done in 10 CFR 430 subsection 32

ANSI Z21.10.3-1993 incorporate by reterence as indicated by ASHRAE Standard 90.1-1989 Addendum n.

No.

Instantaneous water heaters designed to heat water to temperatures of 180°F or higher may be subjected to the energy conservation standards ofcommercial equipment regardless ofthe input rating. (See 4.2.2)

Instantaneous water heaters designed to heat water to temperatures of 180OF or higher may be subjected to the energy conservation standards ofcommercial equipment regardless ofthe input rating. (See 4.2.2)

FILE Q:\datalee-40Iee-43143<:onnnon'rulsserilnistreplnistrept.wpd October 6,**1~8** (7:04PM)

### Standby L.ossTesting 8 

### Commercial Water Heater or Packaged Boiler:Which test procedure, if 

### any, shoulrl be used to test boilers as commercial water heaters? Based 

### on comments by 

### CEC and 

### GmW MST recomn~encfs that if 

### a packaged boiler is used to supply service hot water, it should be tested and rated as a hot water heater for its thermal efficiency rating. If

### the same boiler is used for spaceheating purpose, it should be tested as a packaged boiler for its combustion efficiency rating. (See 4.2.2)



### Unfircd Storage Tanks Issue 

### Shouldthe R-value be consideredto be an "effective" R-value which '~11ould account for heat losses through the insulation due to thermal bxidges? 

### NIST Recommendation 

### No (

### See 4.2.3)

FILE Q:brake4O\ee-43\43conrmon~~~~treptnirnept.wpd octoba6, 1998(7:04PM) 

### Issue 

### What test procedures are available foruse in 

### detenniniag Ole rate of heat 'loss per square foot 

### oftank surface area?



### If procedures 

### are available, which should DOE 

### require? It' 

### not, is a new procedure needed'! NfST Recommendatior~

e 

### None were identified dul"ing

### the workshop.



## * MST is developing one based on 

### ANSI 221 10.3-1993. • Commercial Water Heater or Packaged Boiler: Which test procedure, ifany, should be used to testboilers as commercial water heaters?

Standby Loss Testing 

### Issue



## • Should the R-vmue be considered to be an "effective" R-value which would account for heat losses through the insulation due to thermal blidges?

Unfired Storage Tanks 

### Issue 

# • What test procedures are available for use in detennining the rate ofheat loss per square foot oftank surface area?



# • Ifprocedures are available, which should DOE require? Ifnot, is a new procedure needed?



### 7 • Based on comments by CEC and GMfA, NlSTrecommends that ifa packaged boiler is used to supply service hot water, it should be tested and rated



## •



## •

• . as a hot water heater for its thermal efficiency rating. 

### Ifthe same boiler is used for space heating purpose, it should be tested as a packaged boiler for its combustion efficiency rating. (See 4.2.2)



### NIST Recommendation No. (See 4.2.3)



### NIST Recommendation None were identified during the \vorkshop.

NlST is developing one based on**.A.l~SI** Z21.10.3-1993.

FILE Q:ldata\ee-40Iee·43143common'nasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### 3.3 

### Test Protocolsfor Commercial "Packaged"Boilers

Definition 0f"Packa~ed Boilei'

Combustion Efficiencv; Jacket Losses 

### Issue 

### * Is the EPACT's definitionfor packaged boiler clear enough? To what extent, if any, are custom-designed,field-assembled boilers excluded? Is a size limit implicitin the definition of "commercial packaged boiler." artd if 

### sowhat is the lnaxin~~arn capacitya7 

### PU'EST 

### Recon~mendation NSTbelieves that the definition of a packaged boiler is clear enougf.~ to exclude custanl-desiga (for a specific installation), field-constructed (as opposed to a re-assembly of major sub-assemblies disassembled hrshipping purpose) boiler system Whilethe size is not implicit, the rille 

### should be confined to low-pressure boilers. (See 4.3.1)

FILE Q:Llata\ee40\ee-43\4kommon~\nishep\nish.ept.wpd October 6,1998 (7:04PM) 

### 1

ss

### oe 

### Efficiency: AS&EPTC4 f 

### includes parasitic electric energy in its eMiciency calculation. Shoutd parasitic electricenera be considered in cornbustion efficiency? 

### * Jacket Loss: 

### NSt all 

### the ,4Sm 

### 90.1- 1989

### referenced test standardsinclude lest and calculatici~ methods fur jacket loss Only 

### AShEPTC 4 1

### provides a graph for jacket loss and a test method also. (1) 

### Ifa jacket loss term is needed, should a single method be selected forjacket loss test' (2) 

### Should laboratory test results be adjusted to (average ?) 

### outdoor conditions? 

### NIST Recommendation 

### NSTrec~infnends that parasitic electric energy be ignored as heat input in combustion et'ficiencycalculation



### * Sincethe referenced test proceriures (ANSI 221 13 

### and 131 

### Std -1989) 

### for low-pressure steam and hot water boilers donot 

### include jacket loss test, and the calculation ofthe combustion eficiency does not require the term jacket loss, KIST 

### reco~nmends that



### - jacket loss (radiationloss 

### in ASME PTC 4.1) test not be required in the test procedure 3.3 Test Protocols for Commercial "Packaged" Boilers

Definition of"Packaged Boiler" 

### Issue 

## • Is the EPACT's definition for packaged boiler clear enough? To what extent, ifany, are**custom-desi~ned,** field-assembled boilers excluded? Is a size limit implicit in the definition of "commercial packaged boiler," and ifso \vhat is the maximum capacity?

Combustion Efficiency; Jacket Losses 

### Issue 

## • Efficiency: ASIYfE PTC4.1 includes parasitic electric energy in its efficiency calculation. Should parasitic electric energy be considered in combustion efficiency?



## • Jacket Loss: NOt all the ASHRAE 90.1- 1989 referenced test standards include test and calculation methods forjacket loss. Only ASn.1E PTC 4.1 provides a graph for jacket loss and a test method also. (1) Ifa jacket loss tenn is needed, should a singJe method be selected forjacket loss test? (2) Should laboratory test results be adjusted to (average ?) outdoor conditions?

8 

## •



# •

• NIST Recommendation NIST believes that the definition ofa packaged boiler is clear enough to exclude custom-design (for a specific installation), Held-constructed (as opposed to a re-assembly ofmajor sub-assemblies disassembled for shipping purpose) boiler system. While the size is not implicit, the rule should be confined to low-pressure boilers. (See 4.3.1)



### NIST Recommendation NIST recommends that parasitic electric energy be ignored as heat input in combustion efficiency calculation.

Since the referenced test procedures (ANSI Z21.13 and HI Std.-1989) for low-pressure steam and hot water boilers do not includejacket loss test, and the calculation ofthe combustion efficiency does not require the tenn jacket loss, NIST recommends that jacket loss (radiation loss in ASIvfE PTC 4.1) test not be required in the test procedure.

FILE Q:\data\ee-40\ee-43\43common\nasseri'nistreplnistrept.wpd October 6,1998 (7:04PM)

### Uniformity of Test Conditions, Test Setup, and Procedures Issue

8 

### There are differences among the various referenced test standards.In cases where more tfim 

### one procedure is applical3leto the same product, dothe different procedures yield the same result? If not, which procedure isthe sounderit) 

### each instance? 

### N [;I;;$ 

### Recon~mendation 

## * NSTrecommends that the HI-1989 

### standard be referenced 

### as a single uniform DOE 

### test standard for commercial, packaged, gas and oil fired, low-pressure steam and hot water boilers for space heating application, uiitfi 

### the provision that the inlet wxer temperature for hot water boilers be specified at 80

### ilO"F 

### and the outlet water temperature for hot water boilers be set at 180

### h2"F 

### as specified in ANSI 221.13-1993a. (See 4.3.2). 

## * For flue gas temperature measurement, 

### should a 9-them~ocoupte grid be 

### an option instead 

### of the singletemperature sensor measured successively at 9 

### points? To obtain a more atcurate flue gas temperature for the flue loss method, should insulation ofthe flue pipe up tothe temperature measurement plane be requiredf? NXST 

### recommends that the T-31-1989 

### standard be 

### referenced as a single uniform DOE test standard for con~mercial, packaged, gas and oil fired, Iolv-pressure steam and hot water boilersfor space heating applicarion which specifies the tllermocouple grid for fluegastemperaturemeasurement 

### and the insulation ofthe flue pipe.

Provisions for OtherDesim Features

Issue 

## * Shouldtwotest conditions with respect to water inlet and outlet temperatures be specified for hot water boilers for high 

### temperature and low temperature applications?

I 

### None ofthe referenced test standards specify 

### a test procedure for condensing boilers. Should a test procedure for flue condensate measurement be developed for condensingboilers? If 

### so, should the NIST Recommendation 

## * NIST agrees with the commentsfrom the workshop attendees and does not recoinmend a different set oftest inlet and outlet water temperatures for applications that require a low supply and return temperature setting. (See 4.3.2) 

## * NIST recommends that the test 

# 1 procedure (under steady-state condition) 

# I for 

### flue condensate measurement as specified in ASHiC4E 103-1993be offered as an optional test procedurefor 

# ]

9 FILE Q:Idata\eedO\ee-43\4komm~\nisbep\nirne~.wpd October6, 1998 (7:04PM) Unifoffi1ity ofTest Conditions, Test Setup, and Procedures 

### Issue 

## • There are differences among the various 

## • referenced test standards. In cases where more than one procedure is applicable to the same product, do the different procedures yield the same result? Ifnot, which procedure is the sounder in each



### . '] mstance.



# • For flue gas temperature measurement, 

## • should a 9-themlOcouple grid be an option instead ofthe single temperature sensor measured suc.cessively at 9 points? To obtain a more accurate flue gas temperature for the flue loss method, should insulation ofthe flue pipe up to the temperature measurement plane be required?

Provisions for Other Design Features



### Issue 

# • Should twotest conditions with respect to 

# • water inlet and outlet temperatures be specified for hot water boilers for high temperature and low temperature applications?



## • None ofthe referenced test standards 

# • specify a test procedure for condensing boilers. Should a test procedure for flue condensate measurement be developed for condensing boilers? Ifso, should the
9 

### NIST Recommendation NIST recommends that the HI-1989 standard be referenced as a single uniform DOE test standard for commercial, packaged, gas and oil fired, low-pressure steam and hot water boilers for space heating application, with the provision that the inlet water temperature for hot water boilers be specified at 80 ±lO°F and the outlet water temperature for hot waterboilers be set at 180 ±2 0 F as specified in ANSI Z21.13-1993a. (See 4.3.2).

NIST recommends that the H]-1989 standard be referenced as a single uniform DOE test standard for commercial, packaged, gas and oil fired, low-pressure stearn and hot water boilers for space heating application which specifies the thermocouple grid for flue gas temperature measurement and the insulation ofthe flue pipe.



### NIST Recommendation NIST agrees vvith the comments from the workshop attendees and does not recommend a different set oftest inlet and outlet watertemperatures for applications that require a low supply and return temperature setting. (See 4.3.2) NIST recommends that the test procedure (under steady-state condition) for flue condensate measurement as specified in ASHRAE 103-1993 be offered as an optional test procedure for

FILE Q:'datalee-40Iee-43143comrnonlnasseri'Jristrep'Jristrept.wpd October 6, 1998 (7:04PM)FILE Q:\data\ee-40\ee-43\43Comm~Lustrepinistrept.wpd October6, 1998(7:04PM) 

### procedure in ASHiIAE 103- 

### 1993be considerediadopted? 

## * Should DOE 

### adopt the two

### rating conditions (atthe maximum and the 

### minimum input rates) for modulatingboilers as 

### specifiedin 

### -4SHRAE90 1 

### -f 989



## * Should a single boiler be tested for a modular boiler assernbfy?

o



## * Should a hot water/steani boilerbe tested on steam only3 condensing boilers



## * It

### is 

### NXST's understandingthat DOE 

### agrees with 

### the commentsfrom the workshop that since the statute only requires rating at the rated input, only 

### testing at the rated input 

### sftall be required 

## * MST recommends that for tliose types of commercial packaged boiler installations,a singleboiler from the assembly be tested and its efficiencybe applied as the 

### efficiency rdting of the boiXer assembly. (See 4.3.2)

e 

### NIST is proposing &at manufacturersbe allowed the option ofreporting the efiicier~cy rating 

### of a steam and 

### hot water boiler from the test result obtained by nesting the boiler as a steanl boiler. (See 4.3 

### 2) procedure in ASHRAE 103-1993 be considered/adopted?



# • Should DOE adopt the two rating 

## • conditions (at the maximum and the minimum input rates) for modulating boilers as specified in ASHRAE 90.1-1989?



# • Should a single boiler be tested for a 

## • modular boiler assembly?**~**



# • Should a hot waterlsteanl boiler be tested 

## • on steam only?

10 condensing boilers.

It is NIST's understanding that DOE agrees with the comments from the workshop that since the statute only requires rating at the rated input, only testing at the rated input shall be required.

NIST recommends that for those types ofcommercial packaged boiler installations, a single boiler from the assembly be tested and its efficiency be**~** 

## - applied as the efficiency rating ofthe boiler assembly. (See 4.3.2)

NIST is proposing that manufacturers be allowed the option ofreporting the efficiency rating ofa steam and hot water boiler from the test result obtained by testing the boiler as a steam boiler. (See 4.3.2)

FILE Q:\data\ee-40\ee-43\43common\nasserilnistreplnistrept.wpd October 6. 1998 (7:04PM)

### 3.4 

### Test Protocols for Commercial Warm 

### Air Furnaces



### Themla1vs. Coinbustion EfEciei~cy; Jacket Losses

Provisions for 

### 0the;~esian Features Isstie

0 

### Eficiencv: In cases where EP,it,CT specifiesthermd efEciency and the referenced test procedures listed in ASHUE90.1 

### measure combustion efficiency, should DOE repirea procedure to measrire thermal efficiency as OUTPUT!INPUT, or should it specify a method for correcting combustion efficiencieswittijacket lossesto obtain themla1 eff~ciencies? Shouldthe term "thermal eficiency" be taken in 

### practice to mean the samething as combustion efficiency, as prescribed by ANSI 221.47- 19939

o 

### Jacket Loss: ANSI Z21.47 

### provides a test procedure to measurejacket loss. Should laboratory test resultsbe adjustedto (average 7) 

### outdoor condidons? KIST 

### Recommendation

0 

### As per DOE, the statute defines the energdescriptor for a commercial 

### tvam air furrtace as the thermal efiiciency and it should not be changed, thereforeMST

### recolnmendsthat, DOE definethe term thermal ef'ficiencyfor a commercial warm 

### air f'urnace as 1000/6 minus the percent flue loss, asprescribed in the referenced 

### ANSI 22

### 1.17.

### (See 4.4.3)

Based on the commentsfmm the workshop attendees,MST

### recomme~~ds that no adjustment to outdoor condition be rnade tothe jacket loss test procedure as prescribed in ANSI 221.47

11 FILE Q:Lkh\ee40\ee-43\4kom0n~hsb:ephstrept.wpd October6,1998 (7:04PM) 

### f

### ssue 

## * Should 

### DOE?adopt the two rating conditions(at the maximum and the ininin~urn input rates) for modulating furnaces as specified in ASHR,4E 90.1- 1988?

0 

### None ofthe referenced test standards specify test procedure for condensiag hrnaces. Should a test procedure for flue condensate measurementbe developed for condensing furnaces '? 

### If so, should the procedure in ASHRAE 103-

### I 993 

### be considered/adopted'? 

### NLST Recorninnendation 

### It is NIST's understanding that 

### DOE agrees with the comments from the worksl~op that sincethe statute only reyuiresrating at the rated input, only testing at the rated input shall be required.

0 

### NSTrecommends that the test procedtrre (under steady-state condition) for flue condensatemeasurement as specified in ASHR,@ 1103-

### 1993

### be offered as an optional test procedure for condensingf'urnaces 3.4 Test Protocols for Commercial 'Varm Air Furnaces

Thernlal vs. Combustion Efficiency; Jacket Losses 

### Issue 

## • Efficiency: In cases \vhere EPACT specifies thermal efliciency and the referenced test procedures listed in ASHRAE 90.1 measure combustion efficiency, should DOE require a procedure to measure thermal efficiency as OUTPUTIINPUT, or should it specify a method for correcting combustion efficiencies withjacket losses to obtain thermal efficiencies? Should the term "thermal efficiency" be taken in practice to mean the same thing as combustion efficiency, as prescribed by ANSI Z21.47- 19937 

## • Jacket Loss: ANSI Z21.47 provides a test procedure to measurejacket loss. Should laboratory test results be adjusted to (average 7) outdoor conditions?**~** Provisions for Other Design Features



### Issue 

# • Should DOE adopt the two rating conditions (at the maximum and the minimum input rates) for modulating furnaces as specified in ASHRAE 90.1- 19897



## • None ofthe referenced test standards specify test procedure for condensing furnaces. Should a test procedure for flue condensate measurement be developed for condensing furnaces 7 Ifso, should the procedure in ASHRAE 103-1993 be considered/adopted?

11 

## •

•

•



## • NIST Recommendation As per DOE, the statute defines the energy des('TIptor for a commercial 

### \vrunl air fumace as the thermal efficiency and it should not be changed, therefore NlST recommends that, DOE define the term thermal efficiency for a commercial warm air furnace as 1**OO~·o** minus the percent flue loss, as prescribed in the referenced ANSI Z21.47. (See 4.4.3)

Based on the comments from the workshop attendees, NIST recommends that no adjustment to outdoor condition be made to thejacket loss test procedure
as prescribed in ANSI Z21.47.



### NIST Recommendation Itis NISI's understanding that DOE agrees with the comments from the workshop that since the statute only requires rating at the rated input, only testing at the rated input shall be required. NIST recommends that the test procedure (under steady-state condition) for flue condensate measurement as specified in ASHRAE 103-1993 be offered as an optional test procedure for condensing furnaces.

FILE Q:'datalee-40Iee-43143connnon'nasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### 3.5 

### Test Protocols f%r Commerciall

### Air Conditioners and Heat Pumps


### "Heating Onlv" Heat Pumps Issue

8 

### Are "Heating Only" 

### heat pumps covered equipment? NISI'Reconlmendstion 

### NSTobserves that tho statute does not cover this equipment. This determination is of little practical consequencebecauseheatjng-only heat pumps arc neither atrailable on the U.S. 

### market a1 

### this time nor are expected 

### any time soon. (See 4.5.2)



### Computer Room Aj

### r 

### Conditioners 

## I Essue 

### Are computerroom air conditiorlers covered equipment? NlST Recommendation 

### NIST observes that these equipment are special purpose equipmentwith 

### distinct 

# I design features and 

### are not covered, when used primarily for cooling computers (see 4.5.3)

FILE Q:~ta\ee-40\ee-43\43commLtasSaiLtistr~\nistreptptwpd October6, 1998 (7:04PM) 3.5 Test Protocols for Commercial Air Conditioners and Heat Pumps
"Heating Only" Heat Pumps Issue 

## • Are "Heating Only" heat pumps covered 

## • equipment?

ComputerRoom Air Conditioners Issue 

# • Are computer room air conditioners 

# • covered equipment?

12 NIST Recommendation NIST observes that the statute does not cover this equipment. This determination is oflittle practical consequence because heating-only heat pumps are neither available on the US. market at this time nor are expected any time soon. (See 4.5.2)

NIST Recommendation NIST observes that these equipment are special purpose equipment with distinct design features and are not covered, when used primarily for cooling computers (see 4.5.3)

FILE Q:ldatalee-40Iee-43143common'nasseri'nistrep'nistrept.wpd October6, 1998 (7:04PM)

### 4.0 Discussion of

### Proposed Provisions 4.P 

### Sampling, Certification and Enforcement 4.1.1 General Discussions 

### The purpose of establishing regulations concerning certification and enforcement is to provide a basis for assuringthat covered commercial EIVAC 8s 

### water heating equipment which are certified asbeing in conformancewith applicable energy conservation standardsactually con~ply u.irh 

### those standards. KIST recommendsa set ofprovisio~~s concerningcomplianc,ecertification and enforcement proceduresfor covered commercial equipment. Compliance with energy conservation stancfarcis would be assured in part by having each manufacturer certify thar its covered equipmsrlt compiiss with the applicable energy col~servation standards. 

### In addition. enforcement procedures would be 

### specifiedfor use in 6solving any disputed performance claims for covered equipment. For consumer products, the test procedurefor each class of equipment incorporates a sampling plan designedtogive a reasonable assurancethat the true mean perfomlance ofthe equipment being manufactured and sold meets or conformstothe DOE 

### enerjg eficiency standard. The mean performanceis selected as the critical performance characteristicofcovered equipment because it deternlinesthe overall energy usage of a covered equipment population, and thus the impact ofthe equipment on national energy consumption. Individual units produced fion~ asingle design may vary in energy eficiency for a number of valid reasons, includingvariability in manufacturing and testing. Therisk tothe put>Bic orpurchasing a non-complyingunit, and the burden on tile manufacturerin conductingpe~for-mance testing, nlust be balanced toprovide adequate protection for the public without imposing an excessivetesting burden on the manufacturers. Given that perfomlancetesting of every unit of a covered product would be prohibitively expensiveand time-consuming,the averageperformanceof 

### the basic model must be estimated through evaluation ofa sample drawn from the population. 'The method by which estimation of equipment performanceis derived from a small sample of a large population is called a samplingplan. 

### Prior tothe 

### DOE workshop in April, NIST anticipated that compliance certification and enforcement sampling proceduresfbrcommercial equipmentwould be similartothose established in the past for consumerproducts. These require manufacturersto certify compliancebased on testing under strictly prescribed statistical sampling schemes designed to assure, with reasonable probability, that the average efficiency of each product sold meets the applicable standard. Enforcementinvolves a similar,but not identical statistical sampling arrangement. The advantage of this approach is that mar~ufacturers can provide adequateassuranceof compliance willlout having to incur the cost oftesting every single unit they produce. When presented with the concept of applying a prescribed statistical sampling method to certifyingcommercial equipment, participants at the workshop made three general observations:

FILE Q:bta\ee-40\ee-43\43comm~\nisrrep~strept.wpd October 6,1998 (7:MPM) 

### 4.0 Discussion ofProposed Provisions 4.1 Sampling, Certification and Enforcement 4.1.1 General Discussions The purpose ofestablishing regulations concerning cenification and enforcement is to provide a basis for assuring that covered commercial HV AC 

### & \vater heating equipment which are certified as being in conformance with applicable energy conservation standards actually comply with those standards. ]\(lST recommends a set ofprovisions concerning compliance certification and enforcement procedures for covered commercial equipment. Compliance with energy conservation standards would be assured in part by having each manufacturer certify that its covered equipment complies with the applicable energy conservation standards. In addition, enforcement procedures would be specified for use in resolving any disputed performance claims for covered equipment. For consumer products, the test procedure for each class ofequipment incorporates a sampling plan designed to give a reasonable assurance that the true mean performance ofthe equipment being manufactured and sold meets or conforms to the DOE energy efficiency standard. The mean performance is selected as the critical performance characteristic ofcovered equipment because it deternlines the overall energy usage ofa covered equipment population, and thus the impact ofthe equipment on national energy consumption. Individual units produced from a single design may vary in energy efficiency for a number ofvalid reasons, including variability in manufacturing and testing. The risk to the public ofpurchasing a non-complying unit, and the burden on the manufacturer in conducting pelformance testing, must be balanced to provide adequate protection for the public without imposing an excessive testing burden on the manufacturers. Given that perfomlance testing ofevery unit ofa covered product would be prohibitively expensive and time-consuming, the average performance ofthe basic model must be estimated through evaluation ofa sample drawn from the population. The method by which an estimation ofequipment performance is derived from a small sample ofa large population is called a sampling plan. Prior to the DOE wockshop in April, NIST anticipated that compliance certification and enforcement sampling procedures for commercial equipment would be similar to those established in the past for consumer products. These require manufacturers to certify compliance based on testing under strictly prescribed statistical sampling schemes designed to assure, with reasonable probability, that the average efficiency ofeach product sold meets the applicable standard. Enforcement involves a similar, but not identical statistical sampling arrangement. The advantage ofthis approach is that manufacturers can provide adequate assurance ofcompliance without having to incur the cost oftesting every single unit they produce. When presented with the concept ofapplying a prescribed statistical sampling method to certifying commercial equipment, participants at the \vorkshop made three general observations:

13 FILE Q:ldata\ee-40\ee·43\43commonlnasseri\nistrep\nistrept.wpd October 6, 1998 (7:04PM)e 

### A 

### workableunifom san~pling method covering the uidevariety of commerciai equipment woufd be diflicuft, if 

### not impossibleto formulate. This is due to the large number of design variations and small numbers of identical units for some equipment.

a 

### The State of California and several voluntarq.industql associationsalready have effective efficiency certification programs in place that leave the sample design to the manufacturer.
0 a 

### R7ith 

### adequate independent verification and penalties for improper certification, prescribing the sampling schemeisunnecessary. since the manuiidctnrers will have an incentiveto design one that limits the risk ofbeing caught out ofcompljance. \Vilfi 

### these observationsin mind, N 

### ST 

### investigated the 

### certification programs of the State of 

### California, the Air Conditioning and RefrigerationInstitute, the 

### Gas Appliance Manuhcturers' Association, and the Hydro~lics Institute. All 

### ofthese programs entail some form of independent verification or supervision of tests canied outby the manufacturer,and each containspemlties that appear adequate for the purposes of assuring that testing would occur, and that certified eMiciencieswould be reliable. 

### On the other hand, some manufacturersdonot participate in 

### voluntary industryprograms, and no progain exists at present for commercial iiu-naces, so

### DOE would need its own 

### certificationtesting and verification arrangement, at least for equipment not otherwise covered NTST therefore recommends that DOE require manufacturers to certify compliancebased on testing under a prescribed sampling scheme or on testingperformed under DOE 

### approved voluntary independei~t certificationpro,arms. The operatingprocedures ofthree existing industry certificationprograms are summarizedbe1ow:

o 

### For commercial air conditioners,the program is operated by the Air-Conditioning and Refrigeration"Institute (ARI). 

### Thisis a vduntary program that allows participating manufac~urers to certify the perfomance oftheir equipment. and which conductsperiodic veiificationtesting ofperlbrmai~ce claims. Equipment perfomancevalues are listed in a directory that is availabletothe public. The existence 

### ofthis industrq.program increases the likelihood tkat energy efficiency representations of covered air conditioners are accurate, at least for participating manufacmrers ART 

### claims that over ninety percent of the manufacturers of covered con~rnercial air conditioners participate in this voluntary certification prosram. Furthermore, the manufacturers maintain that the program is effectively policing the marketplace, and this additional testing and certification requirerr~ei~ts are unnecessary.

a 

### For cominercialboilers, the program is operatedby 

### the I-IydronicsInstitute 

### (HI) for the Gas 

### Appliance Manufacturers Association. This is also a voluntq program which conductscertification testing ofboilers at the manufacturer's test facility. Equipment performancevalues 

### are listed in a directory that is availabieto the public The 

### HI certification program does not includeperiodic vexif?carion tesring, but does have provisions for unannounced inspections ofparticipati

### ng manufacturer'sproduction facilities to Iook for changesin certified 

### model design or construction. The existenceof this industryprogram increasesthe likelihood that energy eficiency representations of covered boilqs are accurate. at

### least for participating manufacturers. I3dkmsthat over
14 FILE Q:~\eellO\ee-43\43~)mon~\~strep\nimept.Wpd October 6,1998 (7:04PM) • A workable uniform sampling method covering the v.ride variety ofcommercial equipment would be difficult, ifnot impossible to formulate. This is due to the large number ofdesign variations and sman numbers ofidentical units for some equipment.

• The State ofCalifornia and several voluntruy industry associations already have effective efficiency certification programs in place that leave the sample design to the manufacturer.**~** • \Vith adequate independent verification and penalties for improper certification, prescribing the sampling scheme is unnecessary, since the manufacturers will have an incentive to design one that limits the risk ofbeing caught out ofcompliance. \Vith these observations in mind, NIST investigated the certification programs ofthe State of California, the Air Conditioning and Refrigeration Institute, the Gas Appliance Manufacturers' Association, and the Hydronics Institute. All ofthese programs entail some fonn ofindependent verification or supervision oftests carried out by the manufacturer, and each contains penalties that appear adequate for the purposes ofassuring that testing would occur, and that certified efficiencies would be reliable. On the other hand, some mru1Ufacturers do not participate in voluntary industry programs, and no program exists at present for commercial il1rnaces, so DOE would need its own certification testing and veriflcation arrangement, at least for equipment not otherwise covered. NIST therefore recommends that DOE require manufacturers to certify compliance based on testing under a prescribed sampling scheme or on testing perfonned under DOE approved voluntary independent certification programs. The operating procedures ofthree existing industry certification programs are summarized belmv:

• For commercial air conditioners, the program is operated by the Air-Conditioning and RefngeratiorrInstitute (ARI). This is a voluntary program that allows participating manufacturers to certify the perfonnance oftheir equipment, and which conducts periodic veIification testing ofperformance claims. Equipment perforn1ance values are listed in a directory that is available to the public. The existence ofthis industry program increases the likelihood that energy efficiency representations ofcovered air conditioners are accurate, at least for participating manufacturers. ARI claims that overninety percent of the manufacturers ofcovered commercial air conditioners participate in this voluntary certification program. Furthennore, the mar1Ufacturers maintain that the ARI program is effectively policing the marketplace, and thus additional testing and certification requirements are unnecessary.
• For commercial boilers, the program is operated by the Hydronics Institute (HI) for the Gas Appliance Manufacturers Association. This is also a voluntary program which conducts certification testing ofboilers at the manufacturer's test facility. Equipment performance values are listed in a directory that is available to the public. The HI certification program does not include periodic verification testing, but does have provisions for unannounced inspections ofparticipating manufacturer's production facilities to look for changes in certified model design or construction. The existence of this industry program increases the likelihood that energy efficiency representations of covered**boil~rs** are accurate, at least for participating manufacturers. 

### HJ daims that over

14 FILE Q:\data\ee-40\ee-43\43corrnnon\nasserilnistreplnistreptwpd October 6,1998 (7:04PM)

### ninety percent of the cast iron and copper fin boiler manufacturers participate in their certification program. The manufacturers of large steel boilers do not participate in the 

### ED certification program, but rather test accordingto tile American Boiler Manufacturers Association 

### (ABM-4)procedures. Furthermore,the manufacturers maintain that the

### N7 program is effectively policing the marketplace, and thus any additional testing and certification requirements we unnecessary.

e 

### For commercial water heaters, the program is operatedby the Gas Appliance ManufacturersAssociati on (G.4,MA) 

### 'I'his is a voluntary program that a1

### l

### ours participating manufacturersto certify the performance oftheir equipment, and which conductsperiodic verification testing ofperfornlance claims. Equipmentperfomlance values are listed in a directory that is available to the public. The existence ofthis industry program increasesthe likelihood that energy efficiency representations of covered water heaters are accurate, at least for participatingmanufacturers. 

### GAMA claims that about 

### twothirds of the con~mercial water heater nlanufactrirersparticipatein the voluntary certification program.

e 

### Thereis currently no industry certification program for furnaces Due to the above co~siderations, KIST recommends that DOE 

### minimize additional testing burdens on manufacturers of commercial HV.4C and water heating equipment, while maintaining a certificationprocedure which isboth fairto all manufacturers, and which will provide a reasonable assurancethat the established minimum perfomlance standards arebeing met. The proposed procedures are described in the followjng sections, and include a basic certification program, a provision for voluntary independent certiticationprogram, and an 

### enforcement testing plan. This proposal would not require any additional testing not already being conductedby manufacturers who are participatingin an industry certification program, and wouId involve a similarlevel oftestingby manufacturersnot participating in that or anotherequivalentjndus~ certification program. 4.1.2 

### Certification Procedures 

### NIST recommendsthat DOE adopt a certificatior~ plan for commercial equipmentwhich incorporates the determination of efficiency based on testing conducted by orfor the manufacturer and 

### reported to DOE: either directly or through a designated industry organization. The value for efficiencyshall be that which the manufacturer determinesto be tfte mean for all of the units ofthat basic model, using any valid statistical method, and shall be based on die results oftesting in accordancewith the applicabletest procedure. The individual units tested shall be representative ofthebasic model, and a st~fficient number shall be tested to ensure that 

### an accurate estimate of&he mean efficiency of the basic model can be detemjned The number 

### of units to be tested, and the method for determining the mean efficiency are left to the discretion of the manufacturer,however dl 

### test results and related analysisused in the determination ofthe mean must be maintained by the manufacturer as a permanent record. A 

### possible format for certifyingthe etXcjency to an authorized trade association 

### or to 

### DOE is included in Appendix 

### PI.. ninety percent ofthe cast iron and copper fin boiler manufacturers participate in their certification program. The manufacturers oflarge steel boilers do not participate in the 

## .m certification program, but rather test according to the American Boiler Manufacturers Association (ABMA) procedures. Furthermore, the manufacturers maintain that the HI program is effectively policing the marketplace, and thus any additional testing and certification requirements are unnecessary.
• For commercial water heaters, the program is operated by the Gas Appliance Manufacturers Association (GAMA). This is a voluntary program that allows participating manufacturers to certify the performance oftheir equipment, and ,vhich conducts periodic verification testing ofperfom1ance claims. Equipment perforn1ance values are listed in a directory that is available to the public. The existence ofthis industry progTam increases the likelihood that energy efticiency representations ofcovered water heaters are accurate, at least for participating manufacturers. GAMA claims that about two thirds ofthe commercial water heater manufacturers participate in the voluntary certification program.
• There is currently no industry certification program for furnaces. Due to the above cOQsiderations, NIST recommends that DOE minimize additional testing burdens on manufacturers ofcommercial HVAC and water heating equipment, while maintaining
a certification procedure which is both fair to all manufacturers, and which will provide a reasonable assurance that the established minimum perforn1ance standards are being met. The proposed procedures are described in the following sections, and include a basic certification program, a provision for voluntafj' independent certitication program, and an enforcement testing plan. This proposal would not require any additional testing not already being conducted by manufacturers who are participating in an industry certification program, and would involve a similar level oftesting by manufacturers not participating in that or another equivalent industry certification program. 

### 4.1.2 Certification Procedures NIST recommends that DOE adopt a certification plan for commercial equipment which incorporates the detennination ofefficiency based on testing conducted by orfor the manufacturer and reported to DOE, either directly or through a designated industry organization. The value for efiiciency shall be that which the manufacturer determines to be the mean for all of the units ofthat ba..c;ic model, using any valid statistical method, and shall be based on the results oftesting in accordance with the applicable test procedure. The individual units tested shall be representative ofthebasic model, and a sufficient number shall be tested to ensure that an accurate**e~timate** ofthe mean efficiency ofthe basic model can be determined. The number of units to be tested, and the method for determining the mean efficiency are left to the discretion of the manufacturer, however all test results and related analysis used in the detennination ofthe
mean must be maintained by the manufacturer as a permanent record. A possible forn1at for certifying the efficiency to an authorized tTade association or to DOE is included in Appendix A.

15 FILE Q:'data\ee-40\ee-43\43<:ommonlnasseri'nistrep'nistrept.wpd

. October 6,1998 (7:04PM)

### 4.1.3 

### Alternative Methods for Determining Efficiency 

### NSTrecommends allowing the determination of efficiency based on testing results while not specif'icalfyrequiring actual testing of every basic model. due to the potentidly large number of basic model variations and the subsequentlargetesting burden 'Thus, the eilkiency cf a basic model could be determined using analytical procedures such as computer simulation or other approaches, as long as those procedureshave been verified and validated using testing results. \Vritten docurnentati

### on demonstra~ing the validation of suck a~lalytical procedures must be maintained as a permanent record, and must be approved by a registered professional engineer, independentofthe company.

a 

### 4.1 ..I 

### Voluntary Mependent Certificatioal T'rogram 

### Manufacmrerswho participatein industry rating and certificationprograms have their equipment subjected to periodic verificationtesting, which is conducted at independent laboratories, or by independent testing personnel. Thisprovides a strong deterrent 

### to f'alse performance 

### claims. However, manufacturerswho donot choose to participate in an industry rating program are not subject to verification testing. Thus, 

### NIST recommendsthat manttfacturersparticipating 

### in inctustry certification progams which meet the following requirementswould be ableto demonstrate coxrtpijancethrough their participation in the industry certification program. Ma~nufacturers not participatingin 

### voluntary induswy certification programs would have to

### have their covered products tested at an independent laboratory, or meet stricter compliance certificati~n criteria. Requirementsfor Approved Voluntaw Independent Certification Programs (1) 

### Energy efficiency peifcrmancemetricsmustbebased OII 

### measurements. (2)Testing must be co~~ctucted at an independentlaboratoiy, orunder the supervision of independentpersonnel, in accordancewith the prescribed 

### DOE test procedures. (3) 

### Periodicverification testing must be conducted on listed equipment, such that the performance of each basic moefel is checked at least every fiveyears (3) 

### Equipment which fklsverification testing must either be removed from production and sale, or be delisted. (5) 

### Units selected for verification testing must be selected randomly from manufacturer's stock (6) 

### Theprocedures for the operation of lhe certificationprogram must be published in written form. Voluntary Independent Certification Programswhich meet the above requirements can request 

### DOE approvalby submittingdocumentation substantiatingtheir compliance directly to

### DOE. For man~~facturers of covered commercial 

### WACand water keating products who do not participate in a 

### DOE approved Voluntary Independent Certification Program, the 

### performance of covered products must

### be determinedby measurements conducted at an 

### independer~t laboratory, orunder the supervision ofindependent persoiii~el, or the representations must 

### be reviewed and certifiedby 

### an independent state-registered professional engineerwho is not 

### an employee ofthe manufacturer. The registered professional engineeris to certify that the representation accurately
16 FILE Q:Lkta\ee-4O\ee-43\43commonon~~strep\nistrept.wpd October6,1998 (?WPM) 

### 4.1.3 Alternative :Methods for Determining Efficiency "NiST recommends allo\\1ng the determination ofefficiency based on testing results while not specifically requiring actual testing ofevery basic model, due to the potentially large number of basic model variations and the subsequent large testing burden. Thus, the eftlciency ofa basic model could be detennined using analytical procedures such as computer simulation or other approaches, as long as those procedures have been verified and validated using testing results. Written documentation demonstrating the validation ofsuch analytical procedures must be maintained as a permanent record, and must be approved by a registered professional engineer, independent ofthe company.



### 4.1.4 Voluntary Independent Certification I)rogram Manufacturers who participate in industry rating and certification programs have their equipment subjected to periodic verification testing, which is conducted at independent laboratories, or by independent testing personnel. This provides a strong deten'ent to false perfonnance claims. However, manufacturers who do not choose to participate in an industry rating program are not subject to verification testing. Thus, NIST recommends that manufacturers participating in industry certification programs which meet the following requirements would be able to demonstrate compliance through their participation in the industry certification program. Manufacturers not participating in voluntary industry certification programs would have to have their covered products tested at an independent laboratory, or meet stricter compliance certification criteria. Requirements for Approved Voluntary Independent Certification Programs 

### (1) Energy efficiency pelformance metrics must bebased on measurements. (2) Testing must be conducted at an independent laboratOlY, orunder the supervision of independent personnel, in accordance \\1th the prescribed DOE test procedures. (3) Periodic verification testing must be conducted on listed equipment, such that the performance ofeach basic mdtlel is checked at least every five years. (4) Equipment which fails verification testing must either be removed from production and sale, orbe delisted. (5) Units selected for verification testing must be selected randomly from manufacturer's stock. (6) The procedures for the operation ofthe certification program must be published in written form. Voluntary Independent Certification Programs which meet the above requirements can request DOE approval by submitting documentation substantiating their compliance directly to DOE. For manufacturers ofcovered commercial HVAC and water heating products who do not participate in a DOE approved Voluntary Independent Certification Progranl, the performance of covered products must be determined by measurements conducted at an independent laboratory, orunder the supervision ofindependent personnel, orthe representations must be reviewed and certified by an independent state-registered professional engineer who is not an employee ofthe manufacturer. The registered professional engineer is to certify that the representation accurately
16 FILE Q:\data\ee-40Iee-43\43common\nasseri\nistreplnistrept.wpd October 6, 1998 (7:04PM)

### reflects the energy efficiencyofthe covered product. The following sampling proceduremust be followed: 

### A sample of suft"Icientsize shall be tested to ensure that 0 

### any represented value of energy ef'ficiency shall be no greater than the lower of (A) 

### the mean of the sample, 

### or @) 

### the lower 95 

### percent confidencelimit ofthetrue mean divided by 0.95, 

### or, ar1j7

### represented vatue of energy usage shall be no lessthan the greater of (A)

### the mean ofthe sample, or 

### (B)the upper 95 percent confidence limit ofthe tnie mean divided by 

### 1.05.

4.1.5 

### Enforcement Procedures 

### R2ST recommends keeping essential1 y 

### the same enforcementregulations for commercial FNAAC & 

### water heating equipment as cw'lies~tly in 

### place forthe covered residential appliances. The only exceptionswould 

### be special provisio~~s fdr covered equipment which are manufactured in very small quantities, or which areverJI large in size. Curreiltenforcementreguiationsrequire the testing of a minimum offour units, u7ith the potential for the testing ofup totwenty units. This would be impossiblefor basic models malulactured in snxall quantities, and prohibitively expensivefor extremely Large basic models. 'I'lius, NLS'T 

### recommei~ds that ifthe total 

### number of available units of 

### a basic model involved in 

### an enforcement action is less than four, then all ofthe rtnits shall

### be tested.

### *An exception could be made availablefor veq7 large units on 

### a case-by-case basis, siich that on1y 

### a single unit would be tested.

4.1.6 

### Proposed Sampling Schemefor Enforcement Testing KIST 

### recommeilds a sampling scheme forthe enforcementtesting of conlmercial equipment, as outlined in Appendix

### B

.

FILE Q:Llata\ee-40iee-43\43comm0n~seri\nistrep\nistrepl.wpd October6,1998 (7:04PM) reflects the energy efficiency ofthe covered product. The**fol1oV\~ng** sampling procedure mllst be followed: A sample of sufticient siz.e shall be tested to ensure that**~** • any represented value ofenergy efliciency shall be no greater than the lower of(A) the mean oftbe sample, or (B) the lower 95 percent confidence limit ofthe true mean divided by 0.95, Of,

• any represented value ofenergy usage shall be no less than the greater of(A) the mean ofthe sample, or (B) the upper 95 percent confidence limit ofthe tme mean divided by 1.05.



### 4.1.5 Enforcement Procedures :N1:ST recommends keeping essentially the same enforcement regulations for commercial HVAC & water heating equipment as cUlTentiy in place for the covered residential appl1ances. The only exceptions would be special provisions for covered equipment which are manufactmed in very small quantities, orwhich are very large in siz.e. Current enforcement regulations require the testing ofa minimum offour units, with the potential for the testing ofup to twenty units. This would be impossible for basic models manufactured in sman quantities, and prohibitively expensive for extremely iarge basic models. Thus, NIST recommends that ifthe total number of available units ofa basic model involved in an enforcement action is less than four, then all ofthe units shall be tested.**~An** exception could be made'available for very large units on a case-by-case basis, such that only a singJe unit would be tested.



### 4.1.6 Proposed Sampling Scheme for Enforcement Testing J\i1:ST recommends a sampling scheme for the enforcement testing ofcommercial equipment, as outlined in Appendix B.



### 17 FILE Q:ldata\ee-40\ee-43\43comrnon\nasseri\nistrep\nistrept.wpd October 6,1998 (7:04PM)

### 4.2 Test Protocols for Commercial Water Heaters 

### and Qn~fired Hot Water Storage Tanks 4.2.1 

### General Discussions 

### This subsection discussesthe main issues identified for test procedures for con~mercid water heaters and con~mercial unfired hot ~~ater storagetanks 4.2.2 Commercial Water Heater Test Procedure 

### &?ST'S proposed amendmentstothe water heater test procedrlre include incorporation by reference portions ofANSI 221 3 O 

### 3- 

### 1993that pertain to the measureme11 k 

### of thenna't efficiency and standby loss. NTST 

### also proposes modifications ofthe procedureto maintain consistency with the test procedure upon which federal energy consenration standards are based and to provide specificationsforthe measurement equipment to be used to perform the tests. EPAct indicates that 'yest procedures shall be those generally accepted inrtustry testing procedures or rating procedures developed or recognized by 

### the Air-conditioningand Refrigeration Institute orby the American Society of Heating, Refrigeratingand Air 

### Conditioning Engineers, as referenced in ASKRAEIES Standard 90.1 and in 

### effect on June 30, 1992."ASHRAE/IES Standard 90.1-1989with Addendum b was in effect on this date and the referenced test procedure for commercial water heaters was ANSI 221.10.3-1990 Sincethen Addendum 90.In-f 

### 997, which isrelated to commercial water heating equipment, was approved by 

### AS-. Addendum 11

### references 

### ,kXSI221.10.3-1993. Portions of

### ANSI 221.10.3-1993 related to thermal efficiency and standby loss testing, as referenced within the test procedure being set forth in Appendix

### F, were unchanged from I990 to 1993. There 

### aretwo other c~lrrently published test procedrlres that have been consideredfor irlcorporationby reference, ANSI 221.10.3-1 998 and AS£-RAE1 18.1-1993.AXSB 221.10.3- I998 was published ii~ 

### April 

### 1998.This version contains changes in 

### the R/lethodofl'est sections ofboth the thermal efficiency and standby loss test procedures. These changesinclude differences in test setup procedures as well as reducing the test duration ofthe standby loss test from 48 

### to 24 

### hours The .4ST3RAE

### test procedure also contains differencesin 

### test setuprequjren~er~ts frorn those ofAWSI 221.10.3-1990193as well as the shortened 24 hour star~dt>y loss test duration. Althoughthese test procedures are fundamentally similarto procedures contained in ANSI 221.10.3-1993: they are not being incorporated by 

### reference at this timebecause there is not sufficient evidenceto indicate whether these changeswill 

### afTect energy conservation standardsfbr covered equipment It is recommended that ANSL 221.10.3-1993 be adopted as the test procedure for water heaters. KIST believes that incorporation of ANSI 221.10.3-1993 would not alterthe energ standards for water heaters crlnently in place. Comments are requested on the impact of selectingthis test procedure for incorporation by 

### reference. Strong considerationwas given by 

### NIST to recommendingthe incorporation of

### ASHRAE Standard 118.1-1993. However, after carehlly reviewingthe document,it was determined that modifications would have to be provided to bring certain portions ofthe test procedure in line with the test procedures contained in ANSI 221

### .10.3-1

### 993 so as not to aff'ect energy standards.Cor~sideration was also given to the fact that


### 18 FILE Q.'data\ee-40\ee-43\4~mhd'mishep~strept.wpd October6,1998 (7:04PM) 4.2 

### Test Protocols for Commercial Water Heaters and Unfired Hot 'Vater Storage Tanks 4.2.1 

### General Discussions This subsection discllsses the main issues identified for test procedures for commercial water heaters and commercial unfired hot water storage tanks. 4,2.2 

### Comme.'cial Water Heater Test Procedure NiST's proposed amendments to the water heater test procedure include incorporation by reference portions ofANSI 221.10.3-1993 that pertain to the measurement ofthennal efficiency and standby loss. N1ST also proposes modifications oftbe procedure to maintain consistency with the test procedure upon which federal energy conservation standards are based and to provide specifications for the measurement equipment to be used to perform the tests. EPAct indicates that "test procedures shall be those generally accepted industry testing procedures or rating procedures developed or recognized by the Air-conditioning and Refrigeration**Institu~** or by the American Society ofHeating, Refrigerating and Air Conditioning Engineers, as referenced in ASHRAElIES Standard 90.1 and in effect on June 30, 1992."ASHRAEIIES Standard 90.1-1989 with Addendum b was in effect on this date and the referenced test procedure for commercial water heaters was ANSI 221.10.3-1990. Since then Addendum 90.1n-1997, which is related to commercial water heating equipment, was approved by ASHRAE. Addendum n references .A...t'l"SI 221.10.3-1993. Portions ofANSI 221.10.3-1993 related to thermal efficiency and standby loss testing, as referenced within the test procedure being set forth in Appendix F, were unchanged from 1990 to 1993. There are two other currently published test procedures that have been considered for incorporation by reference, ANSI 221.10.3-1998 and ASHRAE 118.l-1993. ANSI 221.10.3- 1998 was published in April 1998. This version contains changes in the Method ofTest sections ofboth the tllermal efficiency and standby loss test procedures. These changes include differences in test setup procedures as well as reducing the test duration ofthe standby loss test from 48 to 24 hours. The ASHRAE test procedure also contains differences in test setup requirements from those ofANSI Z21.10.3-1990/93 as well as the shortened 24 hour standby loss test duration. Although these test procedures are fundamentally similar to procedures contained in ANSI Z21.lO.3-1993, they are not being incorporated by reference at this time because there is not sutlicient evidence to indicate whether these changes will affect energy conservation standards for covered equipment.

.**~** It is recommended that ANS [ 221. 1 0.3-1993 be adopted as the test pi-ocedure for water heaters. ]\(lST believes that incorporation ofANSI 221.10.3-1993 would not alter the enerblJ' standards for water heaters currently in place. Comments are requested on the impact ofselecting this test procedure for incorporation by reference. Strong consideration was given by NIST to recommending the incorporation ofASHRAE Standard 118. I -1993. However, after carefully revievving the document, it was determined that modifications would have to be provided to bring certain portions ofthe test procedure in line with the test procedures contained in**Al~SI** 221.10.3-1993 so as not to affect energy standards. Consideration was also given to the fact that

18 FILE Q:\datalee-40Iee-43143comrnon'masseri'mistrep'mistrept.wpd October 6,1998 (7:04PM)

### AS- 

### 118.1-1993is currently undergoing revisions as is ASI3R.M Standard 90.1-1989 When the revised Standard 90.1is approved, the Department is required to review the impact on energy standards ofthe revised/amended standard. Upon amendment of Standard 90.1-1989,the Department can reconsider incorporatioilof the test procedure referenced by the revised Standard 90.1. Measurement Eauipment Sfrecifications Specificationsfor measurement equipmenttobe used to conductthermal efikiency and standby loss tests are not included in ANSI 221.103-1993 These specificationsshould be included to maintain consistertcqarnongtest facilities The specificatjons that will 

### be provided within Appendix 

### F to Subpart

### B of Title 10 

### CFK Pair.431 will be as contained in 

### the Instrumentation subsection of Appendix E 

### to Subpart

### B of 10 CFRPart 430 

### for temperature,pressure. higher heating value, weight, con~bustion products, energy consumption and rate of energy consumption Oil-fueled Water Heaters 

### ANSI 221.10.3-1993 does not address the testing of oil-fueled water heaters (sinceit is limited to natural gas). Therefore, provisions are added to allow ANSI 221.10.3-1993 to directly address the testing of oil-fueledwater heaters. These modifjcations are the same as thoseprovided as a footnoteto Table 1I.

### 1of A

### SHKAE Staldard 90.1

### -1 989 

### Addendum n. Electric Water Heaters ANSI 221

### .10.3-1993does not directly address the testing of electrjcwater heaters. Therefore, provisions are added to allow the ANSI test procedure to directly addressthe testing of electric water heaters. These modifications are the same as those provided as a 

### footnoteto Table 11.1of ASllRAE Standard 90 1-1989 Addendum n. Hot Water SupplyBoilers Hot water supply boilers are designed and marketed to provide senricewater heating. Addendum n 

### to ASHRAE Stanaard 90.1 

### - 1989requireshot water supply boilers to meet the same energy efficiency requirementsas water heaters. NTST recommendsthat the Department consider adoption of the ASHRLkE approach related to commercial hot water supply boilers, requiring hot water supply boilers to meet the energy efficiency standards for cominercial water heaters. InstantaneousWater Heater Definition The definition of commercial instantaneouswater heaters contained ii~ 

### EPAct aldthe definition of consumer water heaters contained in 

### NMCA

### do not 

### specifically address devicesthat are designed to heat water to temperatures of 180°F

### or higher. -41

### the Workshop on Commercial Appliances in April of 1998GAMA stated that these devices are not 

### designed or marketed to be 

### used in consumer:'residentialapplications regardless ofthe input ratings ofthe devices and therefore should be subjectedto the energy conservation standardsof commercial equipment. 

### Thisurould be consistent with 

### the definitions 

### ofinstantaneouswater heaterspresented 

### in Appendix 

### E to Subpart

### R of 10

### CFR Part 430 which excludewater heaters designed to deliver water at a controlled temperature of 180"

### F or higher. Also, the PublicReview Draft of 

### ASHIUE

19 FILE Q:&n\ee-40\ee-43\43comai~\nistrepinishept.~ October6,1998 0:PM) ASHRAE 118.1-1993 is currently undergoing revisions as is ASHRAE Standard 90.1-1989. When the revised Standard 90.1 is approved, the Department is required to review the impact on energy standards ofthe revisediamended standard. Upon amendment of Standard 90.1-1989, the Department canreconsider incorporation ofthe test procedure referenced by the revised Standard 90.1. Measurement Equipment Specifications Specifications for measurement equipment to be used to conduct thermal etl1ciency and standby loss tests are not included in ANSI Z21.10.3-1993. These specifications should be included to maintain**consistency~**among test facilities. The specifications that 

### will be provided within Appendix F to Subpart B ofTitle 10 CFR Part 431 will be as contained in the Instrumentation subsection ofAppendix E to Subpart B of 10 CFRPart 430 for temperature, pressure, higher heating value, weight, combustion products, energy consumption and rate ofenergy consumption. Oil-fueled Water Heaters ANSI Z21.lO.3-1993 does not address the testing ofoil-fueled water heaters (since it is limited to natural gas). Therefore, provisions are added to allow ANSI Z21.10.3-1993 to directly address the testing ofoil-fueled water heaters. These modifications are the same as those provided as a footnote to Table 11.1 of ASHRAE Standard 90.1-1989 Addendum n. Electric Water Heaters ANSI 221.10.3-1993 does not directly address the testing ofelectric water heaters. Therefore, provisions are added to allow the ANSI test procedure to directly address the testing ofelectl1c water heaters. These modifications are the same as those provided as a footnote to Table 11.1 of ASHRAE Standard 90.1-1989 Addendum n. Hot 'Vater Supply Boilers Hot water supply boilers are designed and marketed to provide service water heating. Addendum
n to ASHRAE Stan4,ard 90.1-1989 requires hot water supply boilers to meet the same energy efficiency requirements as water heaters. NIST recommends that the Department consider adoption ofthe ASHRAE approach related to commercial hot water supply boiiers, requiring hot water supply boilers to meet the energy efficiency standards for commercial water heaters. Instantaneous Water Heater Definition The detlnition ofcommercial instantaneous water heaters contained 

### in EPAct and the definition of
consumer water heaters eontained in NAECA do not specifically address devices that are designed to heat water to temperatures of 180"F or higher. At the Workshop on Commercial Appliances in April of 1998 GAMA stated that these devices are not designed or marketed to be used in consumer/residential applications regardless ofthe input ratings ofthe devices and therefore should be subjected to the energy conservation standards ofcommercial equipment. This would be consistent with the definitions ofinstantaneous water heaters presented in Appendix 

### E to Subpart B of 

### 10 CFR Part 430 which exclude water heaters designed to deliver water at a controlled temperature of 180°.F or higher. Also, the Public Review Draft ofASHRAE

19 FILE Q:'data\ee-40\ee.43\43connnonlnasseri'nislrep'nistrept.wpd October 6, 19!18 (7:04PM)

### Standard 90.1-1989R indicates that instantaneouswater heaters designed toheat water to temperatures of 380°F or highermust meet coma~ercial product energy perfornlartce criteria regardless ofinput rating. 'The Departinent is considering whetherinstantaneous water heaters designed to heat water to temperatures of 180°For higher shorildbe subjectedto the energy conservation standarcfsof commercial equipmentregardless of input rating. The Depafimentis reviewing its statutory authority to determine whether products that are covered by the NAECA 

### standardscan be required to meet EPAct energy conser\iaPio~~ standards The rationaie is that product design and the intended use of such products may clearly indicatewhetfier they are commercial or resiclentiaj products. Based on EPAct ciefinitions:the input rating for an EPAct-covered commercial water heater must lie above a minirnurn value,which corresponds to the upper limit for the 

### NAEG.4-covered water heater input rating 'I'fiereare no size limits based on storage volume in eitherNAECA 

### or EPitct However, the 

### DOE test procedure for residential u7ater heaters (Appendix E to Subpart

### B of 10 

### CFR Part 430) 

### does not apply to instantaneousu7ater heaters with storage volilmes greater than or equal to 2 

### gallons. This causes a gap in test procedure coverage for instantaneous waler heaters which fail under NAECA coverage based on input rating but have storage s7olumes of 2 

### gallons or more. At the 

### Workshop on Conimercial Appliances in April of 1998, GL4kL4 

### and A. 0. 

### Smith pointed out this gap in coverdge. They also stated that these equipment are not designed or marketed as consumerproducts. 

### For the reasons given above, the Department is consideling whetherinstantanems water heaters having storagevolumes of 2 

### gallolls or more shouldbe srlbjectedtothe ener=qrconsenration standardsof commercial equipment regardless of inptrt rating. 9 

### Exemption from StandbyLoss Testing The exemptionfrom standby loss testing may be claimed if the water heater has a storage capacity greater than 140gallons, the tank surface area isinsulated to R-13.5 and the water heater does not have a standingpilot tight. 

### In order to clarify the requirements for ctaiming the exemption, the definitionsof I<-value and tank surface area are presented in the test procedure. i<-valueis defined as it relates to standard methods for its determination, and tank surfacearea is defined in ternsof what portions shall be insulatedto meet the exemption criterion. The Department is considering approaches that would strengthen building code inspection and verjtication of compliancewith these provisions. 4.2.3 

### Commercial Unfired 

### Storage Tank Test Procedure Measurement of HeatLoss EPrlct sets forth requirements for a maximum heat toss rate of 6.5Btu/h per squarefoot ofrank surface area for certajn unfired storagetanks. EPAct indicates that "test procedures shall be those generally accepted industry testingprocedures or rating procedures developed or recogi~ized by the Air-conditioning and RefrigerationInstitute 

### or by the An~erica~i Society ofHeating, Refrigerating and *4irConditioning Engineers, as referenced in ASHRAEES Standard 90.1 and in effect on June 30.~1992." However. there is currently no test procedure referenced in ASEWE 

### Standard 90.1-1989,including addenda, for this category of equipment.Therefore. NIS'I' has

FILE Q:\data\ee-4O\ee-43\43commm~Lu.strepMstrept.wpd October 6,1998 (7:04PM) Standard 90.1-1989R indicates that instantaneous water heaters designed to heat water to temperatures of 180 cF 

### or higher must meet commercial product energy perfoIDlance criteria regardless ofinput rating. The Department is considering whether instantaneous water heaters designed to heat wafer to temperatures of 180°F or higher should be subjected to the energy conservation standards ofcommercial equipment regardless ofinput rating. The Department is reviewing its statutory authority to determine "\vhether products that are covered by the NAECA standards can be required to meet EPAct energy conservation standards. The rationale is that product design and the intended use of such products may clearly indicate whether they are commercial or residential products. Based on EPAct definitions, the input rating for an EPAct-covered commercial ,vater heater must lie above a minimum value, which corresponds to the upper limit for the NAECA-covered water heater input rating. There are no size limits based on storage volume in either NAECA or EPAct. However, the DOE test procedure for residential water heaters (Appendix E to Subpart B of 10 CFR Part 430) does not apply to instantaneous water heaters with storage volumes greater than or equal to 2 gallons. This causes a gap in test procedure coverage for instantaneous water heaters which fall under NAECA coverage based on input rating but have storage volumes of2 gallons or more. At the \Vorkshop on Commercial Appliances in April of 1998, GAJ\..fA. and A. O. Smith pointed out this gap in coverage. They also stated that these equipment are not designed or marketed as consumer products. Forthe reasons given above, the Department is consideIing whether instantaneous water heaters having storage volumes of2 gallons 

### or more should be subjected to the energy conservation standards ofcommercial equipment regardless ofinput rating. 

# .. Exemption from Standbv Loss Testing The exemption from standby loss testing may be claimed ifthe water heater has a storage capacity greater than 140 gallons, the tank surface area is insulated to R-12.5 and the water heater does not have a standing pilot light. 

### In order to clarify the requirements for claiming the exemption, the definitions of.R-value and tank surface area are presented in the test procedure. H.-value is defined as it relates to standard methods for its detem1ination, and tank surface area is defined in terms ofwhat portions shall be insulated to meet the exemption criterion. The Department is considering approaches that would strengthen building code inspection and veritication of compliance with these provisions. 4.2.3 Commercial Unfired Storage Tank Test Procedure Measurement of Heat Loss EPAct sets forth requirements for 

### a maximum heat loss rate of 6.5 BtuIh per square foot oftank surface area for certain uniired storage tanks. EPAct indicates that "test procedures shall be those generally accepted industry testing procedures or rating procedures developed orrecognized by the Air-conditioning and Refrigeration Institute or by the American Society ofHeating, Refrigerating and 

### Ail Conditioning Engineers, as referenced in ASHRAEIIES Standard 90.1 and in effect on June 30, 1992." However, there is currently no test procedure referenced in**.AS~TRAE** Standard 90.1-1989, including addenda, for this categOlY ofequipment. Therefore, 

### N1ST has

20 FILE Q:\data\ee-40\ee-43\43commonlnasseri'cistreplnistrept.wpd October 6, 1998 (7:04PM)

### developed a procedt~re for testingunfired hot water storage tanks. This test procedure consists of two methods for determining the rate of heat loss per square foot of tank surface area The first method involves perfomlingthe standby loss test procedure on an electric storage water heater utilizing an identical tank wid1 identical illsulation andjacketing asthat ofthe ullfired storage tank model and performing 

### the necessary calculationsto determine heat loss per syuartre foot oftank surface area. This procedure will 

### enable the 

### delemination of heat loss of an unfired storagetank as well as the standby loss of 

### an electric storage water heater utilizing the same talk and insulation (having athermal resistance no greater 

### thanthat used oil 

### the uilfired device) The second method is 

### generally applicableto unfired hot water storage tanks It utilizes a separate water heater connected to the unfired sioragetank to charge the storagetank before and after a standby loss test period. 'The first method of testing ispreferred aiad is meant to be less burdensome oil manufacturers by utilizing the test data of a storagewater heater to determine the heat loss ofthe unfired storagetank and the standby loss ofthe storage water heater ifthe storage water heater is constructed the same way as the untjred storagetank. Exem~tion from I-IeatT.,oss Testinrl, The exemption from heat loss testing may be claimed if 

### an unfired hot water storagetank has a storage capacity greaterthan I40 

### gallons and the tank surface aresisinsulatedto R-12.5. 

### In order to clarifythe requirements for claiming the exemption,the definitions of R-value and tank surface area are presented in the test procedure.R-value is defined as it relatesto standard methods for its determination, and tank surface area is defined in terms of 1vhrat portions shall be insulatedto meet the exemption criterion. The Departmentj

### s considering approachesthat ~7ould strengthen building code inspection and ve~ification of compliancewith these provisions.

4.2.4 

### Proposed TestProcedures for CommerciaiWater Heaters 

### KIST recommends s 

### test procedure for rneasurenter~t ofthe energy consumption and energy efficiency of commercial water heaters, as outlined in Appendix C. 

### The recornmendedtest procedure for unfired hot water storage tanks is [istedin Appendix D.

FILE Q:\data\ee-40\ee-43\43comon~\nistI~~strept.wpd Octobs6,1998 (704PM) developed a procedure for testing unfired hot water storage tanks. This test procedure consists of two methods for determining the rate ofheat loss per square foot oftank surface area. The first method involves perfoffi1ing the standby loss test procedure on an electric storage water heater utilizing an identical tank \\;],th identical insulation andjacketing as that ofthe unfired storage tank model and performing the necessary calculations to determine heat loss per square foot oftank surface area. This procedure 

### v,111 enable the deteffi1ination ofheat Joss ofan unfired storage tank as well as the standby Joss ofan electric storage water heater utilizing the same tank and insulation (having a thermal resistance no greater than that used on the unfired device). The second method is generally applicable to unfired hot water storage tanks. It utilizes a separate water heater connected to the unfired storage tank to charge the storage tank before and after a standby loss test period. The first method oftesting is preferred and is meant to be less burdensome on manufacturers by utilizing the test data ofa storage ,vater heater to determine the heat loss ofthe unfired storage tank and the standby loss ofthe storage water heater ifthe storage water heater is constructed the same way as the unfired storage tank. Exemption from HeatLoss Testing The exemption from heat loss testing may be claimed ifan unfired hot water storage tank has a storage capacity greater than 140 gallons and the tank surface area is insulated to R-12.S. In order to clarity the requirements for claiming the exemption, the definitions ofR-value and tank surface area are presented in the test procedure. R-value is defined as it relates to standard methods for its determination, and tank surface area is defined in terms ofwhat portions shall be insulated to meet the exemption criterion. The Depattment is considering approaches that would strengthen building code inspection and vedfication ofcompliance with these provisions.

4.2.4 Proposed Test Procedures for Commercial Water Heaters NIST recommends a test procedure for measurement ofthe energy consumption and energy efficiency ofcommercial water heaters, as outlined in Appendix C. The recommended test procedure for unfired hot water storage tanks is listed in Appendix D.

21 FILE Q:ldatalee-40Iee-43143connnonlnasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### 4.3 

### Test Protocols for 

### Commercial "Packaged7' Boilers 4.3.1 

### General Discussions ASffRAE 90.1 Referenced Test Standards EPCA requires that the testing procedures for measuring the efficiency of commercial packaged boilers shall be those generally accepted industry testing procedures or rating procedures developed or recogxlized by the American Society ofv't--Ieating, Refrigerating and Air Conditioning: Engineers, as refereliced in ASHRAEIES Standard 90.1 aid in effect on June 30, 1992. If such an industry test procedure or rating procedure for commercial packaged boilers is amended; 

### DOE shall adopt such revisions unless the Secretary determinesthat to do so would not produce test results which reflect energy efficiency, energy use, and estimated operatingcosts, and ~vould be burdensome to conduct. As referenced in 

### ASI-ERAE90.1 and 

### in effect on June 30. 1992,there are five industry zest standards for gas and/or 

### oil fired boilers. They arethe t-h~erican National Standard hstitute ANSI 221.13-1987 for gas fired boilers (,ANSI 221.13); the Hydronics Institute Testing and Rating Standard for HedtingBoilers-1989, sixth edition, for gas and oil fired boilers (abbreviated as 

### HI Std.); the American Society ofMechanical EngineersPower Test Code 4.1-64 (reafimed R79/85/91) for Steam Generating Units for fossil fuel boilers (ASME P'I'C 4.1);the Ilnderwriters Laboratory Standard 795- 1973 for gas heating equipment 

## OK 795); 

### and Underwriters Laboratory Standard

### UL 726-1990 for oil fired boilers 

### (UL 726) Ofthe five test standards. four are applicableto gas firedboilers 

### and thee are applicableto oil fired boilers. Sincethe year 1989,three of the industry test standardshave been revised. 

### ANSI 221 

### 13-1987 was first revised to '4NSII 221 13-1991, ai~d .4NS1221 13-1991 was further revised via Addenda 221 13a-1993 and 231 13b-1994.

### UL 795-1973 was revised to

### UL 795-1994, and 

### LE 726-1990 was revised to 

### L. 726-1995 iZIscr, 

### ASHRAE 90 1-1989itselfwas revised via Addenda 90 lb, 90 3

### d, and 90 

### f e in b992, 90 t 

### c, 90 

### Ig, and 90.li in 1993, and 90.lm-1995 and 90 111-3 

### 997 

### Currently, a revision to ASHIWE 90.1-1989, named ASHRAE 90 1-1989R,is goingthrough the 

### ASHELM? public review process Ofthe tllree industry test standardsrevised after June 30, 1992. there is no change in the energy performancetest sections of

### UL 795 and 'CTL 

### 726 from their prior versions. There are changes in the efficiency test section of 

### W-SI221.13 between the 221.13-1991 (and the early 1987 versions) and the 221.I3

### -3

### 993a versiorls The major changes are (1)the title 

### of the section (sec.2.11)for efficiency testing was changed from "Thermal Efficiency"to 

### "EE ciency",

### (2) the requirement for efficiency rating was changed from "notLess than that specifiedby the manuf.actt~rer" to "not less than 98% ofthat specified

### by the manufacturer", (3) the result efficiency rating (value)was changed from "rounded to the lower integer (droppingthe fraction after the decimal point)" to "rounded to the nearest 0.

### I percent", (4)inlet water temperature for both steam boiler test and hot water boiler test was changed from "not specified" to "80 *1O9F", and 

### (5) thermal efficiency test for steam boilers for outdoor installationwas dropped in the 1993a version Of the five changes, 

### itern I eliminated the confusion j

### n efficiency terminology where the resulting combustion efficiency for indoor boilers 

### was called thermal eEciency in the 1991

22 FILE Q:Liata\ee-40\ee-43\43comm~Lus~ep\nirneptptwpd Octoba6,1998 (7:WPM) 

### 4.3 Test Protocols for Commercial "Packaged" Boilers 4.3.1 General 

### Discussions ASHRAE 90.1 Referenced Test Standards EPCA requires that the testing procedures for measuring the efficiency ofcommercial packaged boilers shall be those generally accepted industry testing procedures or rating procedures developed or recognized by the American Society ofHeating, Refrigerating and Air Conditioning Engineers, as**referel~ced** in ASHRAEflES Standard 90.1 and in effect on June 30, 1992. Ifsuch an industry test procedure or ratingprocedure for commercial packaged boilers i"s amended, DOE shall adopt such revisions unless the Secretary detel1l1ines that to do so would not produce test results which reflect energy efficiency, energy use, and estimated operating costs, and vv'ould be burdensome to conduct. As referenced in ASHRAF 90.1 and in effect on June 30, 1992, there are five industry test standards for gas and/or oil fired boilers. They are the American National Standard Institute ANSI Z21.13-1987 for gas fired boilers (ANSI Z21.13); the Hydronics Institute Testing and Rating Standard for Heating Boilers-1989, sixth edition, for gas and oil tired boilers (abbreviated as HI Std.); the American Society ofMechanical Engineers Power Test Code 4.1-64 (reaftirmed R79/85/91) for Steam Generating Units for fossil fuel boilers (ASME PTC 4.1); the UnderwTiters Laboratory Standard 795-1973 for gas heating equipment 

### CUL 795); and Underwriters Laboratory Standard UL 726-1990 for oil fired boilers (UL 726). Ofthe five test standards, four
are applicable to gas fired boilers and three are applicable to oil fired boilers. Since the year 1989, three ofthe industry test standards have been revi sed. ANSI Z21.13- 1987
was first revised to ANSI Z21.13-1991, and ANSI Z21.13-1991 was further revised via Addenda Z21.13a-1993 and Z21.13b-1994; UL 795-1973 was revised to UL 795-1994; and lJL 726-1990
was revised to 1.JL 726-1995. Also, ASHRAE 90.1-1989 itselfwas revised via Addenda 90.1b, 90.ld, and 90.Ie in 4992, 90.1c, 90.1g, and 90.1i in 1993, and 90.1m-1995 and 90.1n-1997. Currently, a revision to ASHRAE 90.1-1989, named ASHRAE 90.1-1989R, is going through the ASHRAE public review process. Ofthe three industry test standards revised after June 30, 1992, there is no change in the energy performance test sections ofUL 795 and lJL 726 from their prior versions. There are changes in the efficiency test section ofANSI Z2l.13 between the Z21.13-1991 (and the early 1987 versions) and the Z21.13-1993a versions. The major changes are (1) the title of the section (sec.2.11) for efficiency testing was changed from "Thermal Efficiency" to "Efficiency", (2) the requirement for efficiency rating was changed from "not less than that specitled by the manufacturer" to "not less than 98% ofthat specified by the manufacturer", (3) the result efficiency rating (value) was changed from "rounded to the lower integer (dropping the fraction after the decimal point)" to "rounded to the nearest 0.1 percent", (4) inlet water temperature for both steam boiler test and hot water boilertest was changed from "not specified" to "80 ±10°F", and (5) thermal efficiency test for steam boilers for outdoor installation was dropped in the 1993a version. Ofthe five changes, item 1 eliminated the confusion in efficiency terminology where the resulting combustion efficiency for indoor boilers was called thermal efficiency in the 1991

22 FILE Q:ldatalee-40Iee-43143common'nasserilnistreplnistrept.wpd October 6,1998 (7:04PM)

### version. Item 2 presumably was to provide a tolerance of 3% 

### due to the variability of test results between of txvo independenttests fmanufacturer'sand testing agency's). Item 3 was to give the test boiler a more accurate representation for the efficiency value (since the fractional value can get rounded down by as much as 0.9%).Item 4 

### was to provide a more repeatabletest result by eliminatingthe ambiguity ofaun-specified test water inlet temperature. The reason for the change in item 

### 5 is not clear. Of the five revisions, the specification ofinlet water temperati.tre(itern 4) 

### and the elimination oftest for steam boilers for outdoorinstaliation (item 5) 

### are directly related to test procedure change. The inlet water temperature specificationof 80 *lOGF would provide more repeatable test results and is in agreementwith the requirementfor "Combustion Test" specified in section 2.6.1 

### ofboth versions (1987 arld 1993a) of'tlle standard Since EPCA 

### specifies combustion efjfici ency as the energy efflciency descriptorfor all cominercial packaged boilers, the test for tjlernlal efficiencyfor a steam boiler is not required by the statute at the present time. Based on the above discussion,NIST believes that the revisions contained in mSI 

### 221.13-1993a would not produce results that reflect on energy efficiency and would not be unduf

### y burdensometo conduct. Definition and 

### Boiler Capacity EPAct defines a packaged boiler as "a boilerthat is shipped completewith 

### heating equipment. mechanical draft equipment, and automatic controls, usually shipped in one or more sections." EPAct, Sec.122(a)11I)@). Ofthe five test standards(procedures)for commercial heating boilers referenced by 90.1-1989which in turn 

### was referenced by EP.4ct; and in eRect on June 30, 1 992, 

### three provided similar definitions for packaged boilers, one irnplied that the boiler under its scope to be a packaged boiler by limitingthe size of the boiler covered, and one provided no definition. Specifically,the Hydronics Institute's "Testingand rating Standard for Heating Boilers

## - 1989" 

### (abbreviated as 

### HI -1989) defines a packaged boiler as "a boiler-burner unit factory assembled and wired" 1-11 does not specifically Iirnit the test standard lo conlmercial packaged boilers. However,

### Hi limits the test star~dard to low-pressure heatingboilers as defined in ASMEBoiler and PressureVessel Code, Section IV, 

### Heating Boilers. The Undenvnters Laboratory's

### UL 726 for "Oil-Fired BoilerAssemblies" defines an oil-fired boiler assembly as "A 

### boiler assembly equipped with one or rnore oil burners, and all the necessary safety controls, electrical equipment as needed, and related equipment, manufactured for assembly as a unit" 

### 'C!L 795 

### for "Comn~erciaf-Industrial Gas Heating Equipment"includiilg gas-fired boilers defined a term "gas-fired device" as ".... 

### each device shall be factory-built 

### and shall include all essential comporlents necessary for its normal function as intended. and may be shipped as two or rnore major subassemblies" In addition,both 

### UL 726 and lil, 

### 795 speciefixat "...each subassembly shallbe capable ofbeing incorporatedinto the final assembly without requiring alteration, cutting; drilling, threading; welding or similar tasks by the installer. ..." 

### Both 

### hTL 736 and T_'L 

### 795 limit the scope 

### of coverage to 

### a boiler assenlbly 

### ANSl Standard 221.1 3 does not define 

### a term for commercial packaged boilers, however, the standard limits its scope of coverage

### to gas-fired lowpressure steam and hot water boilers with 

### input ratings of less than 13,500,000Btw'h that likely would limit its coverage to commercialpackaged boilers as defined in EPAct The 

### fifth referenced standard, the ASME 

### Power Testing Code for Steam Generating Units, ASM'E 

### PTC 4 1, 

### provides 

### no definition for a packaged boiler

FILE Q:idataiee-40\ee-43\43commm\n~\nisUepLustrept.wpd October6,1998 (7:04PM) version. Item 2 presumably was to provide a tolerance of2%) due to the variability oftest results bet\.veen oft"\vo independent tests (manufacturer's and testing agency·s). Hem 3 was to give the test boiler a more accurate representation for the efficiency value (since the fractional value can get rounded down by as much as 0.9%). Item 4 was to provide a more repeatable test result by eliminating the ambiguity ofa un-specified test water inlet temperature. The reason for the change in item 5 is not clear. Ofthe five revisions, the specification ofinlet water temperature (item 4) and the elimination oftest for steam boilers for outdoor installation (item 5) are directly related to test procedure change. The inlet water temperature specification of 80 ±10 cF would provide
more repeatable test results and is in agreement with the requirement for "Combustion Test" specified in section 2.6.1 ofbotb versions (1987 and 1993a) ofthe standard. Since EPCA specifies combustion efficiency as the energy efficiency descriptor for ail commercial packaged boilers, the test for thermal efficiency for a steam boiler is not required by the statute at the present time. Based on the above discussion, NIST believes that the revisions contained in ANSI Z21.13-1993a would not produce results that reflect on energy efficiency and would not be unduly burdensome to conduct. Definition and Boiler Capacity EPAct defines a packaged boiler as "a boiler that is shipped complete with heating equipment, mechanical draft equipment, and automatic controls; usually shipped in one or more sections.!l EPAct, Sec.122(a)(11)(B). Ofthe five test standards (procedures) for commercial heating boilers referenced by ASH.&AE 90.1-1989 which in tum was referenced by EPAct, and in effect on June 30, 1992, three provided similar definitions for packaged boilers, one implied that the boiler under its scope to be a packaged boiler by limiting the size ofthe boiler covered, and one provided no definition. Specifically, the Hydronics Institute's "Testing and rating Standard for Heating Boilers

- 1989" (abbreviated as HI -1989) defines a packaged boiler as "a boiler-burner unit factory assembled and wired". HI does not specifically limit the test standard to commercial packaged boilers. However, HI limits the test standard to low-pressure heating boilers as defined in AS1-1E Boiler and Pressure Vessel Code, Section IV, Heating Boilers. The Unden,vTIters Laboratory's UL 726 for "Oil-Fired Boiler Assemblies" defines an oil-fired boiler assembly as "A boiler assembly equipped with one or more oil burners, and all the necessary safety controls, electrical equipment as needed, and related equipment, manufactured for assembly as a unit". UL 795 for "Commercial-Industrial Gas Heating Equipment" including gas-fired boilers defined a term "gas-fired device" as "

.... each device shall be factory-built and shall include all essential components necessary for its normal function as intended, and may be shipped as two or more major subassemblies". In addition, both UL 726 and lJL 795 specify that"

...each subassembly shall be capable ofbeing incorporated into the final assembly without requiring alteration, cutting, drilling, threading, welding or similar tasks by the installer

...." Both UL 726 and tTL 795 limit the scope ofcoverage to a boiler assembly. ANSI Standard Z21.13 does not define a term for commercia! packaged boilers, however, the standard limits its scope ofcoverage to gas-fired lowpressure steam and hot water boilers with input ratings ofless than 12,500,000 Btulh that likely would limit its coverage to commercial packaged boilers as defined in EP Act. The fifth referenced standard, the ASME Power Testing Code for Steam Generating Units, ASM:E PTC 4.1, provides no definition for a packaged boiler.

23 FILE Q:ldata\ee-40Iee-43143common'nasseri'nistrep'nistrept.wpd October 6, 1998 (7:04PM)

### Dt3ring the April 1998DOE 

### workshop, the meaning of a packaged boiler with respect to capacity (size), method of shipment and assembly, 

### types (low-pressure steam and hot water heating boilers, high temperaturehot water boilers, and high-pressure steam power boilers) and application (space heating, service water heating, industrial and utility applications) were discussed.The Gas ApplianceshfanufacturersAssociation (GAhfA), 

### the Anmican Boilers ManufacturersAssociation (ABMA) 

### and Courlcit of Industrial Boiler Owners (GIBO) commented that even though there was no clear-cut criteria on what constitutes a packaged boiler, i1.ageneral a boiler will not be classified as a packaged boiler if field (at the site) welding, pressure parts, or fabricatingthe assembly at the site are required. The criterion ofusing the size or rated input anci:'or outputcapacity as a possjb'fefactor in hedefirljtion for comalercial packaged boilers was discussed and suggestedby some attendees as helphl in defining the scope of coveragein 

### a 

### DOE test procedure for commercialpackaged boilers As described in the previousparagraph, 

### ANSI 221.23 limits its coverage ofboilers to low-pressure steam and hot water boilers of less than 12,500,000Btukin~ut A 

### survey 

### ofthe commercialboilers in the 1998

### certified rating directory of the Hydronics institute showed the largest capacity (output) boiler to be a gas fired heating boiler uith approximately 14,000,000Btu/h gross output Therefore, there isreason to believe that there is a currentpractice ofproducing, in quantities, packaged low-pressrjre steam md hot water heating boilers with output capacity ofup to approxjmately 14

### million Btu per hour. ffou7ever, the California Enesgy Commission (CEC)pointed out that the statute does not provide an upper linlit on capacity in its definition for comn~ercial packaged boilers. Tl~erefore CEC stated that one cannot specify an upper limit on capacity in a DOE test procedrtre for commercial packaged boilers. KIST agrees with CEC's commentthat the statute does not specifically provide an upper limit to the capacity of a packaged boiler. 'Therefore, the setting of 

### an upper limit on the capacity of a packaged boiler is not recommended in the proposed test procedure h2ST realizes that even though there are packaged lieatingboilers, especially of the steel fire tube or water tube design,that have capacities greater than those covered by the ANSI 221.13 

### standard of 12,500,000

### Rtui'h, the limited quantitiesproduced and the method of marketing those boilers (such as custom made to order with provision for acceptancetest to verify efficiency guarantee)

### may n.~ake the testing to c,onformto a

### DOE test procedureimpractical or un-necessary. Therefore, input and comments are sought from all stakeholders on the appropriatenessand practicality (with respect to appijcarion and quantity produced) on the setting of an upper limit on capacity, and if appropriate,on the vaiue oftheupper limit.
0 

### KIST believes that the definition of a packaged boiler is 

### dear enough to exclude custorn-design (for a specific installation), field-constructed (as opposed to a re-assembly of major sub-assemblies disassembledfor shippingpurpose) boiler system, and no additional clarification is needed tothe definition of commercial packaged boilers as stated in the statute. 

### In its comment, 

### CEC recommendedthat 

### an "editorial"change be madeto the EPAct definition of packaged boiler by deletingthe word "usually" in the definition 

### CEC suggested that the word "usudiy"in the definitioncould imply that a packaged boiler 

### can be shipped

### in lessthan one package. 

### XSTbelieves that nothing urould be gained by deletingthe word "usrrdly" even ifit appears redundant. And, if "usually" refers to the word "sections",instead of the number ofthem, somemeaning might be lost by deleting it. Therefore,NIST is not adopting for recomnlendation

FILE Q:Llata\ee-40\ee-43!43comm\nasSeri\nisk~~sireptptwpd October6,1998 (7:04PM) During the Apri11998 DOE workshop, the meaning ofa packaged boiler with respect to capacity (size), method of shipment and assembly, types (low-pressure steam and hot "vater heating boilers, high temperature hot water boilers, and high-pressure steam power boilers) and application (space heating, service water heating, industrial and utility applications) were discussed. The Gas Appliances Manufacturers Association (GAMA), the American Boilers Manufacturers Association (ABMA) and Council ofIndustrial Boiler Owners (CIBO) commented that even though there was no clear-cut criteria on what constitutes a packaged boiler, in general a boiler will not be classified as a packaged boiler iffield (at the site) welding, pressure parts, or fabricating the assembly at the site are required. The criterion ofusing the size or rated input and/or output capacity as a possible factor in the definition for commercial packaged boilers was discussed and suggested by some attendees as helpful in defining the scope ofcoverage in a DOE test procedure for commercial packaged boilers. As described in the previous paragraph, Al'l"SI Z21.13 limits its coverage ofboilers to low-pressure steam and hot water boilers ofless than 12,500,000 Btulh**in~ut.** A survey ofthe commercial boilers in the 1998 certified rating directory ofthe Hydronics Institute showed the largest capacity (output) boiler to be a gas fired heating boiler Vl,1.th approximately 14,000,000 Btu/h gross output. Therefore, there is reason to believe that there-is a current practice ofproducing, in quantities, packaged low-pressure steam and hot water heating boilers v.lth output capacity ofup to approximately 14 million Btu per hour. However, the California Energy Commission (CEC) pointed out that the statute does not provide an upper limit on capacity in its definition for commercial packaged boilers. Therefore CEC stated that one cannot specify an upper limit on capacity in a DOE test procedure for commercial packaged boilers. NrST agrees with CEC's comment that the statute does not specifically provide an upper limit to the capacity ofa packaged boiler. Therefore, the setting ofan upper limit on the capacity ofa packaged boiler is not recommended in the proposed test procedure. NIST realizes that even though there are packaged heating boilers, especially ofthe steel fire tube
or water tube design, that have capacities greaterthan those covered by the ANSI Z21.13 standard of 12,500,000 Btuih, the limited quantities produced and the method ofmarketing those boilers (such as custom made to order with provision for acceptance test to verify efficiency guarantee) may make the testing to confonn to a DOE test procedure impractical or un-necessary. Therefore, input and comments are sought from all stakeholders on the appropriateness and practicality (with respect to application and quantity produced) on the setting ofan upper limit on capacity, and ifappropriate, on the value ofthe upper limit.


## , NIST believes that the definition ofa packaged boiler is clear enough to exclude custom-design (for a specific installation), field-constructed (as opposed to a fe-assembly ofmajor sub-assemblies disassembled for shipping purpose) boiler system, and no additional clarification is needed to the definition ofcommercial packaged boilers as stated in the statute. In its comment, CEC recommended that an "editorial" change be made to the EPAct definition of packaged boiler by deleting the word "usually" in the definition. CEC suggested that the word "usually" in the definition could imply that a packaged boiler can be shipped in less than one package. NIST believes that nothing would be gained by deleting the word "usually" even ifit appears redundant. A.lld, if "usually" refers to the word "sections", instead ofthe number ofthem, some meaning might be lost by deleting it. Therefore, NIST is not adopting for recommendation

24 FILE Q:'datalee-40Iee-43143corrnnonlnasserilnistreplnistrept.wpd October 6,1998 (7:04PM)

### CEC's suggestion of deleting the word "usually"in the definition for commercial packaged boilers Scope of Coverage fil Addendum 90.1n to ASHRAE Standard 90.1-1989, a boiler is defined as "a self-contained appliance for supplying steam or hot water". AKSI 

### Standard 231.13

### defines a gas-fired boiler in 

### the same way as ASETRAE

### Addendum 90.1 

### n. The I-IydronjcsInstitute's Testing and Rating Standard for HeatingBoilers &I 

### Standard

## - 1989) defines a boiler as "a closed direct fired pressure vessel intended for use in heating water or generating steam tobe used externar to itself' 30th

### UL Standards726 and 795 define a boiler as "a closed vessel in which water or some other liquid is heated or steam is generatedor superheared,under pressure 

### or vacuum, by 

### direct application ofheattf ASME PTC 4.1 

### defines "a steam generatingunit (includingthe boiler, furnace, superheater, reheater

.. 

### and fuel-burning equipment) as conlbinations of apparatus for liberating and recovering heat, together with apparatus for transferring to a working fluid the heat thus made available". In all these definj tions, there is no expficit 

### language on the type of applications, that is, space heating, industrial process heating, power generation, etc.that the test boiler is tobe used, exceptthat in their Scope sections, mSf 221.13 and 

### HI Standard 

## - 1989 limit the class ofboilers to lotv-pressure steam and hot water heating boilers. During the April 1998 workshop, questions were raised as to the scope of coveragein a DOE test procedurewith respect to the end use of a packaged boiler since the statute does not explicitly speciethe type of applicationswhere the term "packagedboiler" is involved. It was pointed out by CBO, and othersthat the hot water and steam produced by a packaged boiler can be used for process heating in industrial and manufacturing processes where, in additionto etriciency, other (design) considerationsmay be involved in the operation of 

### a boiler. ABMA 

### and CIBO also pointed out that there are packaged high-pressure steam and high temperature hot water boilers that are differentfrom the low-pressure steam and hot water heating boilers (as classified 

### by ASME) 

### usualfy usedDin space heating and senricewater heating applications. Other attendees (GAMA, 

### Lennox International) pointed out that EPAct invokes ASFERAE 

### 90.1 for the test procedures in the energy efficiencytesting of coinmercial equiptalent, and that historically AS- 90.1 specified the equipnlentcovered in the standard to space conditioning and service water heating applications only.Lennox also stated that it believed that the intent of EPAct when it was developed was to have the equipment test standards to come forth from AST-IWAE90.1, 

### and those applications other than space conditioning and servicewater heating were not within the scope of ASHRAE 90.1.The above argmrne~lts are relevant in view of the fact that the EPAct eficiency standard levels also appear in 

### ASHRAE 90.1. 

### A review ofthe scope ofASHRAE 90.1 and the five test standards referenced by 

### AS^^ 90.1 for testingboilers showed the following: ASEER4E 90.1: 

### By its title, "Energy Efficiency Design ofNew Buildings except Low-Rise Residential Buildings", the standard indicatesthat it is concerned with n~inirnizing the energy consumptiortin the operation and maintenance of

### the building itself 

### (that is, energy consumption with respect to the function ofthe building and the comfort ofthe occupants). 

### In ASHRAE 90.1-1989, therewas no specificlanguage excluding the coverage of certain types of equipment that are installedin the building. However,in a revision in July 3, 

### 1997tothe standard with
25 FILE Q:\data\ee-40\ee-43\43~0mmon\nasseri\nishep~ept.wpd October 6,1998 (7:04PMj CEC's suggestion ofdeleting the word "usually" in the definition for commercial packaged boilers. Scope ofCoverage In Addendum 90.1n to ASHRAE Standard 90.1-1989, a boiler is defined as "a self-contained appliance for supplying steam or hot water". ANSI Standard Z21.13 defines a gas-fired boiler in the same way as ASHRAE Addendum 90.1n. The Hydronics Institute's Testing and Rating Standard for Heating Boilers (HI Standard

- 1989) defines a boiler as "a closed direct fired pressure vessel intended for use in heating "vater or generating steam to be used external to itself'. Both UL Standards 726 and 795 define a boiler as "a closed vessel in which water or some other liquid is heated or steam is generated or superheated, under pressure or vacuum, by direct application ofheat". ASME PTe 4.1 defines "a steam generating unit (including the boiler, furnace, superheater, reheater

... and fuel-burning equipment) as combinations ofapparatus for liberating and recovering heat, together with apparatus for transferring to a working fluid the heat thus made available". In alJ these definitions, there is no explicit language on the type of applications, that is, space heating, industrial process heating, power generation, etc. that the test boiler is to be used, except that in their Scope sections, ANSI Z21.13 and HI Standard

- 1989 limit the class ofboilers to low-pressure steam and hot water heating boilers. During the April 1998 workshop, questions were raised as to the scope ofcoverage in a DOE test procedure with respect to the end use ofa packaged boiler since the statute does not explicitly specify the type ofapplications where the tenn "packaged boiler" is involved. It was pointed out by 

## crno, and others that the hot water and steam produced by a packaged boiler can be used for process heating in industrial and manufacturing processes where, in addition to efficiency, other (design) considerations may be involved in the operation ofa boiler. ABMA and ClBO also pointed out that there are packaged high-pressure steam and high temperature hot water boilers that are different from the low-pressure steam and hot water heating boilers (as classified by ASME) usually used-in space heating and service water heating applications. Other attendees (GA.MA, Lennox International) pointed out that EPAct invokes ASHRAE 90.1 for the test procedures in the energy efficiency testing ofcommercial equipment, and that historically ASHRAE 90.1 specified the equipment covered in the standard to space conditioning and service water heating applications only. Lennox also stated that it believed that the intent of EPAct when it was developed was to have the equipment test standards to come forth from ASHRAE 90.1, and those applications other than space conditioning and service \vater heating were not within the scope ofASHRAE 90.1. The above ar!,ruments are relevant in view ofthe fact that the EPAct efficiency standard levels also appear in ASHRAE 90.1. A review ofthe scope ofASHRAE 90.1 and the five test standards referenced by ASHRA.E 90.1 for testing boilers showed the following: ASHR4..E 90.1: By its title, "Energy Efficiency Design ofNew Buildings except Low-Rise Residential Buildings", the standard indicates that it is concerned with minimizing the energy consumption in the operation and maintenance ofthe building itself (that is, energy consumption with respect to the function ofthe building and the comfort ofthe occupants). In ASHRAE 90.1-1989, there was no specific language excluding the coverage ofcertain types ofequipment that are installed in the building. However, in a revision in July 3, 1997 to the standard \\1th

25 FILE Q:\data\ee-40\ee-43\43conunon'nasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### respect to the Title;Purpose, and Scope (TPS) of the standard by the AS= Standing Standard Project Cohmittee 90.1 (SSPC 90. 

### I), the scope was revised to exclude 

### from coverage "equipment and portions ofbuilding systemsthat use energy prin~arify 

### to provide for industrial, manufacturingor commercial processes". 

### HI Standard (1989) 

### (for oil or gas-fired boilers): Limits its scope to boilers conformingto ASME Boilers and Pressure Vessels Code; Section W; 

### Heating Boilers. Therefore, the test standard islimited to 15 psig maximum steam pressure for steam heating boilers and to 160 psig, 250°F water for hot water boilers. ANSI/AGA 221.13 

### (for gas -fired boilers): Limits its scopeto boilers with 15

### psig maximum steam pressure for steam heating boilers and 160psig, water pressure, 250°F water temperature for hot water heating boilers with a input rating ofless than 12300,000Btulk. 

### UL 726 

### (for oil-fired boilers): No limit is placed on steam pressure or on hot water temperatitre. The test standard is limited ro boiler assembliesas defined in 

### the srandard. 

## ZrL' 795 

### (for gas-fired boilers): No limit isplaced on steam pressure or on hot water temperature. The test standard is limited toboiler assemblies defined in the standard. ASMX 

### PTC 4.1 

### (for Fossil-fueled steamboilers): No limitisplaced on stearn pressure or capacity. The test standard is limited to steam boilers (steam generating units) but also applicable to high temperaturepabove 250" F water temperature)hot water boilers. In reviewing the above industry standardsthat arereferenced by 

### EPAct (orreferenced by EPAct via ASE-IRAE90.1),it 

### is believed that the intent of

### ASI-TRBE90 1,I37 

### Standard -1989 and ANSI 

### 221.13 is to coverLow-pressure steam and hot water heating boilers designed for space conditioningand senricewater heating purposes. The intent of the two 

### Uk standards is testing for safety certification (with 

### respectto constnlctionand operation) where the performance tests are specifkd to insurethat the test boiler will 

### perform to someminintum level oCits intended function 'fhe intent of ASME PTC 4 1 

### is mainly for the acceptance test oflarge steam generating units where a detailed account of dlenergy expendituresis desired. This is evident by the detailed heat gain and heat loss measurement and calculationproceditres specified in the test codes for all components of the boiler system.Tlotvever, the standard does provide for an abbreviated (simplified) efficiency test for the acceptance test of small heating and industrial steam generators. A 

### review of the relevant sections of EPAct indicated that even though the statute does not restrict the coverage ofcommercialpackaged boilers to space conditioningand servicewater heating,the amendmentto Sec.340 ofEPCA (42.

### U.S.C.63 11)as contained in EPAct did put commercial packaged boilers and warm air furnaces (which isfor spaceheating use only) into a single item (EPAct, see.122(a)(l)jlB)iE)),and inserted the item intothe midst ofthe definitions for oxher added:amended items (from small commercial packaged air conditioning and heating equipmentto storagewater heaterg, ...., 

### all of which are equipment exclusively, for space conditioning and servicewater heating purposes). EPAct, sec.122(a)(l)(B) 

### fn addition, 

### in EPCA (EPCA. 

### sec.340(2)@),42 

### U.S.C.63 1 1 ). 

### an item for "steam boilers (clause ix)" xias included as a separate item, and has been retained in 

### EPAct as a redesignated clause viii. EPAct, sec.123(a)(2)@). h2ST believesthat the intent of the statuteis to designatethe tern1 "packagedboifer" as anASSE


### 26 FILE Q:~bkedO\ee-43\43comm~\nishep\nish'ept.wpd October 6,1998 (7:04PM) respect to the Title, furpose, and Scope (TPS) ofthe standard by the ASHRAE Standing Standard Project Committee 90.1 (SSPC 90.1), the scope was revised to exclude from coverage "equipment and portions ofbuilding systems that use energy primarily to provide for industrial, manufacturing or commercial processes". HI Standard (1989) (foroil or gas-fired boilers): Limits its scope to boilers confoffi1ing to ASME Boilers and Pressure Vessels Code, Section IV, Heating Boilers. Therefore, the test standard is limited to 15 psig maximum steam pressure for steam heating boilers and to 160 psig, 250°F water for hot water boilers. 

### ANSIIAGA Z21.13 (for gas -fired boilers): Limits its scope to boilers "lith 15 psig maximum stean1 pressure for steam heating boilers and 160 psig, water pressure, 250°F water temperature for hot water heating boilers with a input rating ofless than 12,500,000 Btu/h. 

### UL 726 (for oil-fired boilers): No limit is placed on steam pressure or on hot water temperature. The test standard is limited to boiler assemblies as defined in the standard. 

### UL 795 (for gas-fired boilers): No limit is placed on steam pressure or on hot water temperature. The test standard is limited to boiler assemblies defined in the standard. 

### ASME PTe 4.1 (for Fossil-fueled steam boilers): No limit is placed on steam pressure or capacity. The test standard is limited to steam boilers (steam generating units) but also applicable to high temperature**~above** 250°F water temperature) hot water boilers. In revieV'.ring the above industry standards that are referenced by EP Act (or referenced by EPAct via ASHRAE 90.1), it is believed that the intent ofASHRAE 90.1, Ell Standard -1989 and ANSI Z21.13 is to cover low-pressure steam and hot water heating boilers designed for space conditioning and service water heating purposes. The intent ofthe two UL standards is testing for safety certification (with respect to constmction and operation) where the performance tests are specified to insure that the test boiler 

### will perform to some minimum level ofits intended function. The intent ofASME PTC 4.1 is mainly for the acceptance test oflarge steam generating units where a detailed account ofall energy expenditures is desired. This is evident by the detailed heat gain and heat loss measurement and calculation procedures specified in the test codes for all components ofthe boiler system. However, the standard does provide for 

### an abbreviated (simplified) efficiency test for the acceptance test of small heating and industrial steam generators. A review ofthe relevant sections ofEPAct indicated that even though the statute does not restrict the coverage ofcommercial packaged boilers to space conditioning and service water heating, the amendment to Sec.340 ofEPCA (42 US.C.6311) as contained in EPAct did put commercial packaged boilers and waffi1 air furnaces (which is for space heating use only) into 

### a single item (EPAct, sec.122(a)(1)(B)(E), and inserted the item into the midst ofthe definitions for other added/amended items (from small commercial packaged air conditioning and heating equipment to storage water heaterS,

...., all ofwhich are equipment exclusively, for space conditioning and service wa.ter heating purposes). EPAct, sec. 1 22(a)(1)(B). In addition, 

### in EPCA (EPCA, sec.340(2)(B), 42 U.S.C.63 11), an item for "steam boilers (clause ix)" was included as a separate item, and has been retained in EPAct as a redesignated clause viii. EPAct, sec. 1 22(a)(2)(B). NiST believes that the intent ofthe statute is to designate the term "packaged boiler" as an ASi\1E

26 FILE Q:'<iata\ee-40Iee-43143connnonlnasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### heating boiler 

### (a low-pressure stcam and hot water heatingboiler) used for space conditioning (and service water heating) for the purpose of coverage,and designatethe tenn "steam boilers" fbr more general applicationssuch as industrial processes and power generation.It is noted that the statutedoes not provide a definition for steam boilers referred to in clauseviii (EPAct, sec.122(a)(2)@)(viii))or establish 

### an energy efficiency standarc! for steam boilers Based on the above discussion,NSTagrees with the majority of the commentsfrom the 

### workshopthat the coverage in 

### a DOE test procedure for cornrnercial packaged boilers be limited to ASME heating boilers for space conditioning (and service water heating as in hot water supply boilers) only. Therefore, it is proposed that at the present time, tile scope of the DOE test procedure for commercial packaged boilers shouldbe limited to low-pressure steam and hot water heating boilers only. Input and comments are requested on the appropriatenessofthis proposal from all interested stakeholders before a final decision is reached. For the purpose of di"scussion,it 

### is also relevant to take note oTa decision made recently during an ASHRAE 

### 90.1 September meeting in 

### Chicago. url~ich resulted in 

### the adoption of an 8,000,000 Bhdllr limit on non-packagedboilers as equipment covered by 

### the standards. Theproposed wording states: These requirementsapply to boilers with rated input of 8,000,900 Bttl/h or less that are not packaged boilers, and to all packaged boilers. h4inirnurn eficiency requirements for boilers cover all capacities ofpackaged boilers. The proposed definitionsfor boiler and packaged boiler for ASFIRAE 90 I-t

### 989R, u7ere also modified at the sameASHRAE 

### meeting as follows: 

### PackagedBoiler- a boiler that is shipped completewith lieating equipment,mechanical draft equipment, and automatic controls; shippedin one or more sections. Packaged boiler includes factory built boilers manufactured as a unit or system, disassembled for shipment and reassembled at the site. Boiler- 

### a selfcontained low-pressure appliance for supplying stemor hot water. The proposed ASl3lUE 

### wording may address some of the concerns raised by the ABMA during the April 1998

### workshop.T-Iowever,it should be pointed out that the proposed limit on rated input of 8,000,000

### f3szl1or less does not apply to packaged boilers which will 

### be coveredby the proposed DOE test procedure.

4.3.2 

### Test Procedures for Measarrement 

### of' Energy Efficiency Uniformity in 

### Test Setup and Test Conditionsfor a Uniform DOE Test Procedure As described and listed above, ASHRAE 

### 90.1referenced five industry test standardsfor rhe testing ofgas and oil fired boilers. Four of the test standardscan be applied to gas-fired boilers and three ofthem can be applied to oil fired boilers. Out 

### ofthe five, two ofthem are for both gas fired and oil firedboilers. Specifically:

FILE Q:'data\ee40\ee-43\4Xomm'~~strg,h&ept.~ October 6,1998 (7:04PM) heating boiler (a low-pressure steam and hot water heating boiler) used for space conditioning (and service water heating) for the purpose ofcoverage, and designate the tenn "steam boilers" for more general applications such as industrial processes and power generation. It is noted that the statute does not provide a definition for steam boilers referred to in clause viii (EPAct, sec. 122(a)(2)(B)(viii)) or establish an energy efficiency standard for steam boilers. Based on the above discussion, NIST agrees w1th the majority ofthe comments from the workshop that the coverage in a DOE test procedure for commercial packaged boilers be limited to ASME heating boilers for space conditioning (and service water heating as in hot water supply boilers) only. Therefore, it is proposed that at the present time, the scope ofthe DOE test procedure for commercial packaged boilers should be limited to low-pressure steam and hot water heating boilers only. Input and comments are requested on the appropriateness ofthis proposal from all interested stakeholders before a final decision is reached. For the purpose ofdtscussion, it is also relevant to take note ofa decision made recently during an ASHRAE 90.1 September meeting in Chicago, which resulted in the adoption ofan 8,000,000 Btu/hr limit on non-packaged boilers as equipment covered by the standards. The proposed wording states: These requirements apply to boilers with rated input of 8,000,000 Btl.l/h or less that are not packaged boilers, and to all packaged boilers. :Minimum efficiency requirements for boilers cover all capacities ofpackaged boilers. The proposed definitions for boiler and packaged boiler for ASHRAE 90.1-1989R, were also modified at the same ASHRAE meeting as follows: 

### PackagedBoiler- a boiler that is shipped complete with heating equipment, mechanical draft equipment, and automatic controls; shipped in one or more sections. Packaged boiler includes factory built boilers manufactured as a unit or system, disassembled for shipment and reassembled at the site. Boiler- a selfcontained low-pressure appliance for supplying steam or hot water. The proposed ASHRAE wording may address some ofthe concerns raised by the ABMA during the April 1998 workshop. However, it should be pointed out that the proposed limit on rated input of8,000,000 Iltu!h or less does not apply to packaged boilers which will be covered by the proposed DOE test procedure.



### 4.3.2 Test Procedures for 

### :Measurement of Energy Efficiency UnifOlmity in Test Setup and Test Conditions for a Unifonn DOE Test Procedure As described and listed above, ASHRAE 90.1 referenced five industry test standards for the testing ofgas and oil fired boilers. Four ofthe test standards can be applied to gas-fired boilers and three ofthem can be applied to oil fired boilers. Out ofthe five, two ofthem are for both gas fired and oil fired boilers. Specifically:



### 27 FILE Q:\data\ee-40\ee.43143common'nasseri'nistrep'nistrept.wpd October 6.1998 (7:04PM)

### AVSUAGA 221.13 is for gas fired boiler and limits the size ofthe test boiler to 12,500,000 Btu/f7.The 199

### 1 

### version ofthe standard set the outlet water temperature to 180

### "F 

### without specieing 

### an inlettest temperature (avalue of 80 ~zIO"F, 

### however. is set in its Combustion Test section). A 

### revision ofthe standard in 1993 221.13a) setthe inlet temperatureto 80°Frt10"F. 

### Ll736 

### and 

### LTL 795 

### do not provide a calculation procedure forthe flue loss. They specify an inlet test temper&ureof 20°Fbelow Ole outlet water temperaturewhile limit the outlet temperatureto no less than 200°F. ASME PTC 

### 4.1 is for stearn and high temperature water boilers ody. * 

### HI-I 989 is applicableto hot11gas and oil fired boilers E-However- HI specifies a test condition that results in a wide range of test inlet water temperature, ranging from 35°Fto 80°F With the outlet water temperature specified at 200°F, this could create a situationwhere, depending on test inlettemperature,two diff'erentefficiency values could be obtained and both would be valid. From the above list, it is seen that for gas-fired boilers, there are differences between the ANSI 

### 221.t

### 3 

### standard and the LJC, 795 and HI-1989 standardsin 

### the settingofboth inlet and outlet water temperatures forhot waterboilers 'I'he specification in the 1993version of

### the ANSL 231.13-1993a is more precise.In its comme~~ts, CEC 

### recommended that the 

### HI- 1989 test standard be adopted by 

### DOE asthe test standard forboth gas-fired and oil-fired boilers. The revised 

### ASERAE 90.1under public review aiso specifiesthe t-11-1989 as the primary test standard forboth gas and oil fired boilers, however, in a footnote, it listed as 

### an optionthe ANSI 

### 221 13 

### forboilers with 

### input of less than 2,500,000 Bb'h and AS-= 

### PTC 4.1for boilers with input greater than 5,000,000 

### Btu/h. As stated in the abo;e list, both gas and oil fired boilers are covered in the HI-1989 standard. However, in its Scope section. HI sliltes that for a gas-fired boiler, its coverage is based on test reports from the AGA and CGA Laboratorieswhich complied ~4th 

### ANSl Z21.13, which currently is the updated 221.13-1993a. Except the water inlet and outlet co~lditions for hot water boilers, the test setup, instrumentation, etc. in the 

### HI- 1989standard and Z2 1.13

### are very similar. The one difference in the test setup is that the Efl-1989 standardrequires insulation ofrhe test stack tothe 

### point of flue 

### gas temperaturemeasurement while the 221.13 

### standard does not require 

### any insulation. This wouId result in a higher combustion efficiency (lower calculatedflue lossbased on flue gas temperature) &on1 the ANSUAGA 221 13procedure 

### thanthe 

### Hi- 1989 procedure, if all other test conditions are the same. As stated before, the 

### HT test standard allows a wide range of test inlet s7ater temperatures.The reason for this is thar in the certification program. the boilers are tested at the manufacturer's plant, not at the Hydronics Ir~stitute. Depending on the season and the manufacturer's geogaphical location, tlle inlet water ternperature from the water main (or other source)can vary widely. During the April 1998workshop, GAMA stated that the difference in combustion efficiency due to the variation of inlet temperature mightbe small Based on the above discussion, it is seen that even though there might 

### be some differencein 

### the

FILE Q:~taLe-lO\ee-43\4~on~\nishep\nimept.~ October 6,1998 (7:MPM) • AJ.'fSI!AGA Z21.13 is for gas fired boiler and limits the size ofthe test boiler to 12,500,000 Btu/h. The 1991 version ofthe standard set the outlet water temperature to 180°F without specifYing an inlet test temperature (a value of80 ±10°F, however, is set in its Combustion Test section). A revision ofthe standard in 1993 (ANSI Z21.13a) set the inlet temperature to 80°F ±100F.



### • VL 726 and 

### t..TL 795 do not provide a calculation procedure for the flue loss. They specify an inlet test temperature of20°F below the outlet water temperature while limit the outlet temperature to no less than 200°F.

• ASME PTC 4.1 is for steam and high temperature water boilers only.

• HI-1989 is applicable to both gas and oil fired boilers. However, HI specifies a test condition that results in a wide range oftest inlet water temperature, ranging from 35

### OF to 80°F. With the outlet water temperature specified at 200°F, this could create a situation where, depending on test inlet temperature, two different efficiency values could be obtained and both would be valid. From the above list, it is seen that for gas-fired boilers, there are differences between the ANSI Z21.13 standard and the UL 795 and HI-1989 standards in the setting ofboth inlet and outlet water temperatures for hot water boilers. The specification in the 1993 version ofthe ANSI Z21.13-1993a is more precise. In its comments, CEC recommended that the HI-1989 test standard be adopted by DOE as the test standard for both gas-fired and oil-fired boilers. The revised ASHRAE 90.1 under public review also specifies the HI-1989 as the primary test standard for both gas and oil fired boilers, however, in a footnote, it listed as an option the ANSI Z21.13 for boilers with input ofless than 2,500,000 BtuJh and ASME PTC 4.1 for boilers with input greater than 5,000,000 Btulh.**~** As stated in the above list, both gas and oil fired boilers are covered in the HI-1989 standard. However, in its Scope section, HI states that for a gas-fired boiler, its coverage is based on test reports from the AGA and CGA Laboratories which complied "with ANS[ Z21.13, which currently is the updated Z21.13-1993a. Except the water inlet and outlet conditions for hot water boilers, the test setup, instrumentation, etc. in the HI-1989 standard and Z21.13 are very similar. The one difference in the test setup is that the HI-1989 standard requires insulation ofthe test stack to the point offlue gas temperature measurement while the Z21.13 standard does not require any insulation. This would result in a higher combustion efficiency (lmver calculated flue loss based on flue gas temperature) from the ANSI! AGA Z21.13 procedure than the HI-1989 procedure, ifall other test conditions are the same. As stated before, the HI test standard allows a wide range oftest inlet water temperatures. The reason for this is that 

### in the certification program, the boilers are tested at the manufacturer's plant, not at the Hydronics Institute. Depending on the season and the manufacturer's geographical location, the inlet water temperature from the water main (or other source) can vary widely. During the April 1998 workshop, GAMA stated that the difference in combustion efficiency due to the vari.ation ofinlet temperature might be small. Based on the above discussion, it is seen that even though there might be some difference in the

28 FILE Q:'<lata\ee-40Iee-43143comm0ll\nasserilnistreplnistrept.wpd October 6,1998 (7:04PM)

### test conditionsbetwgen HI- 

### 1989and AZISI 

### 221.13. the attendees of the April 1998workshop suggested that the 131

### test standard be used to cover both gas fired and oil fired boilers. NIST 

### recommends that the HL-1989 standard be used for both gas and oil tired low-pressure steam and hot waterboilers with a revised inlet and outlet water temperatures of SO ilO°Fand 180&2"F, respectively, conforming to the requirement ofANSI 

### 221.13-1993a.The practical problem of testing a large hot water boiler with a large required water flow rate at a conbolled inlet water temperature may need the pre-conditioning ofthe in[etwater temperature in some regions of the 

### country. Ho~.iever, it is observed that the procedure as specified in 

### ANSI 231 

### 13-1993ahas been in practice since 1993,indicatingthat this may not be a major problem for a 

### boiler of less 

### than 12.500,000 Rtuk rated input. The diflerence in the required outlet temperature for hot water boilers, of200"F by 

### HI standard and 180°Fby ANSI 

### 221.13. may produce a slight increase in the combustion efficiency rating of a boiler currently rated using the 

### HI standard dueto a possibly lower flue gas temperature. However. it isbelieved that this increaseis small and will have no effect on the minimum standard rating specifiedby EPAct. Ofthe other theetest standardsreferenced in ASI-IRA-E90.1-1989, the ASME PTC 4 

### 1 standard 

### is for (large) steam generatingheating and power boifers requiring a detailed account of the energy expendituresof all components in the boiler systemwhich ~iiould be burdensome to conductfor smaller capacity boilers. The

### Hf standard appearsto 

### he an adequate substitute

### forthe 

### ASMEPTC 4.1 

### withrespect to low-pressure stearn boilers since the test and calculation procedure in the 

### HI standardis close tothe simplified efficiency test (or the abbreviated efficiency test) of AShfE 

### PTC 4.1. 

### The mo 

### UL staildards

### (LJL 726 and LJL795) are mainly test standards for safety certification testing ofboilers. The test procednres in the 

### LZ standards are similar to the 1-11-1989 standard exceptthe 

### 'efl., standards specifL an inlet water temperature of nominal 200°F for hot water boilers. 

### In addition, the fJL standards do not provide a calculation procedure for tl.leflue loss computatioi~. Ln h3ST7s opinion,the HX-1989 standard is

### an adequate substitute for the two

### LTL standardsin the area ofpetfornlance testing for energy efficiency of Iow-pressure steam and hot water boilers. Based 

### on the above discussion,

### NIST recommendsthat the H-1.989 standard be referenced as 

### a single uniform DOE test standard for commercial, packaged, gas and oil fired, low-pressure steam and hot water boilers for space heating application, with the provision that the inlet water temperature for hot water boilersbe specified at 80 ilOOf; 

### and the outlet water temperaturefor hot water boilers be set at 180k2"F. Comments are being sought from all stakeholderson this recommendation including the applicability ofthe specified settingofinlet water temperature for hot water boilers. For packaged high-pressure steam and high temperature hot water boilers, the only detailed test procedure for energy efficiencytesting is ASME PTC 4.1. As discussedearlier, during an 

### AS- 90.1h4ecRanical subcommitteemeeting in Chicago (held September 9-12, 

### 1998)the definitions of the terms t'orboiler and packaged boiler were modified sothat 

### a boiler was defined as a self contained low-pressure appliance for supplying steam or hot water. Therefore, N

### LS?' recommends that high-pressure packaged boilers not be coilsidered as covered equipment at this time.

FILE Q:Lkta\ee40\ee-43\43comm~~~trep\nish'e@.wpd Wter 6, 1998 (7:04PM) test conditions between HI-1989 and A:.'JSI Z21.13, the attendees ofthe April 1998 workshop suggested that the HI test standard be used to cover both gas fired and oil fired boilers. NIST recommends that the HI-1989 standard be used for both gas and oil fired low-pressure steam and hot waterboilers with a revised inlet and outlet ,vatertemperatures of80 ±10°F and 180 ±2°F, respectively, conforming to the requirement ofANSI Z21.13-1993a. The practical problem of testing a large hot water boiler with a large required water flow rate at a controlled inlet water temperature may need the pre-conditioning ofthe inlet water temperature in some regions ofthe country. However, it is observed that the procedure as specified in ANSI Z21.13-1993a has been in practice since 1993, indicating that this may not be a major problem for a boiler ofless than 12,500,000 Btulh rated input. The difference in the required outlet temperature for hot water boilers, of200"F by HI standard and 180°F by ANSI Z21.13, may produce a slight increase in the combustion efficiency rating ofa boiler currently rated using the HI standard due to a possibly lower flue gas temperature. However, it is believed that this increase is small and will have no effect on the minimum standard rating specified by EPAct. Ofthe other three test standards referenced in ASHRAE 90.1-1989, the ASME PTe 4.1 standard is for (large) steam generating heating and powerboilers requiring a detailed account ofthe energy expenditures ofall components in the boiler system which would be burdensome to conduct for smaller capacity boilers. The HI standard appears to be an adequate substitute for the ASME PTC 4.1 with respect to low-pressure steam boilers since the test and calculation procedure in the HI standard is close to the simplified efficiency test (or the abbreviated efficiency test) ofASl\1E PTC 4.1. The two UL standards (IJL 726 and UL795) are mainly test standards for safety certification testing ofboilers. The test procedures in the IJL standards are similar to the HI-1989 standard exceptthe VL standards specifY an inlet water temperature ofnominal 200"F for hot water boilers. In addition, the tJL standards do not provide a calculation procedure for the flue loss computation. In NIST's opinion, the HI-1989 standard is an adequate substitute for the two

# u'L standards in the area ofperformance testing for energy efficiency oflow-pressure steam and hot water boilers. Based on the above discussion, NlST recommends that the HI-1989 standard be referenced as a single uniform DOE test standard for commercial, packaged, gas and oil fired, lmv-pressure steam and hot waterboilers for space heating application, with the provision that the inlet water temperature for hot water boilers be specified at 80 ±lOOF and the outlet water temperature for hot water boilers be set at 180 ±2

### oF. Comments are being sought from all stakeholders on this recommendation., including the applicability ofthe specified setting ofinlet water temperature for hot water boilers. For packaged high-pressure steam and high temperature hot water boilers, the only detailed test procedure for energy efficiency testing is ASME PTC 4.1. As discussed earlier, during an ASHRAE 90.1 Mechanical subcommittee meeting in Chicago (held September 9-12, 1998) the definitions ofthe terms for boiler and packaged boiler were modified so that 

### a boiler was defined
as a selfcontained low-pressure appliance for supplying steam or hot water. Therefore, NIST recommends that high-pressure packaged boilers not be considered as covered equipment at this time.

29 FILE Q:ldatalee-401ee-43143common'nasseri'cistrep'cistrept.wpd October 6, 1998 (7:04PM)

### Provisions for Low TemperatureA~plications The issue of a hot water boiler designed for low temperature applications (supply water of 140°F or return water temperature of 120°F,

### or below) was raised and discussed during the Apr-il 1998 

### u7crkshop. ASHIWE 90.1 and the test standardsreferenced by ASHIXAE 90.I. 

### do nor specifically provide test conditions tbr testingtliis type of application, sincethis type ofboiler, which is 

### designed to be used only in the low temperaturerange, may not be yet on the 

### market the 

### comments ofthe attendeesto the workshop were that it was not necessary for DOE 

### to develop another set of test conditions deviatingfrom the 

### test conditions specified in the ASHRAE 90.1 

### referenced test standards at the present time. That is, special provisionsto specifji a lower hot water or~tlet emperature differentfrom that specified in the referenced test standards(of 180°F or 200°F) are not needed. NTST agreeswith the attendees' comments and does not recomnrer~d a different set oftest iglet and outlet water temperaturesfor this type of applications that require a low supply and return temperature setting. Provision for CondensingBoilers The issue oftesting a condensing boiler (a hot water boiler designed to condensepart of the water vapor in the flue gases and equipped wit11 a means of collectingand drainingthis condensate) was raised and discussed during the DOE 

### April 1998

### workshop. AS- 90.1 and the test standardsreferenced by AST-ZRAE90 

### 1 

### do not specifically provide test conditions for testing a condensingboiler. Further, sincecommercial condensingboilers may not be on the 

### market, the comments ofthe attendeesto the workshop. u7ere that it was not necessary for DOE to develop a test procedurethat is different from the test procedrxe specified in the ASlXkXE 90.1 referenced test standardsat the presenttime NIST disagrees with the comments from the cvorkshop attendees on this issue. Since a condensing boiler =.ill provide a significantly higher eEciency, h'1:ST believes that even if there is no com~nercial condensing boiler on the market at the present time, a test procedure sho~~ld be provided for my futuren~anufactrlrers of condensingboilers in orderto give credit for their effort in providing users a product with a higher eEciency. In addition, a test procedure is needed for the future design option evaluationfor the minirnun~ efficiency standard. It is noted that even though the AS- 90.1referenced test standards do not specify a test procedure, there is an industry test procedure, the ASHRAE standard 103-1993, for measuring the insrased energy efficiency of a residential condensingboiler under-steady skte test condition.Thetest procedure has been in practice over the last decade. ?'l~erefore,NlST 

### recommends adopting the test procedure as specified in 

### section 9.2 

### and 11.3.7

### of ASM Standard 103-

### 1993 as 

### an optional test procedure for the determination ofthe increment in energy efficiency due to the condex~sing feature of a condensingboiler. Modular Boilers and %Ir~ftiple Boilers The issue ofhow to test 

### a modular boiler assembly (consistingof a group of individual smaller boilers or modules installed 

### as a unit i.4 

### th no interveningstop valves) or a multiple boiler assembly (consistingof a group ofindividual boilers installed as a unit 

### '~vid~ intenrening stopvalves between the individual boilers) was raised duringthe 

### DOE April 1998workshop. Since a modular boiler assembly or a multipleboiler assembly usually consisted ofindividual boilers or modules of similar design and construction, KIST 

### recommendsthat for those type of commercial packaged boilers, a
30 FILE Q:Llataiee-lO\ee-43\4kommon~\nish~\ni~pt.wpd October 6,1998 (7:04PM) Provisions for Low Temperature Applications The issue ofa hot water boiler designed for low temperature applications (supply water of 140°F or return water temperature of 120°F, or below) was raised and discussed during the April 1998 workshop. ASHRAE 90.1 and the test standards referenced by ASHRAE 90.1 do not specifically provide test conditions for testing tIus type ofapplication, since this type ofboiler, which is designed to be used only in the low temperature range, may not be yet on the market, the comments ofthe attendees to the workshop were that it was not necessary for DOE to develop another set oftest conditions deviating from the test conditions specified in the ASHRA.E 90.1 referenced test standards at the present time. That is, special provisions to specify a lower hot water outlet temperature different from that specified in the referenced test standards (of 180"F or 200°F) are not needed. NIST agrees with the attendees' comments and does not recommend a different set oftest iQ.let and outlet water temperatures for this type ofapplications that require a low supply and return temperature setting. Provision for Condensing Boilers The issue oftesting a condensing boiler (a hot water boiler designed to condense part ofthe water vapor in the flue gases and equipped wi.th a means ofcollecting and draining this condensate) was raised and discussed during the DOE April 1998 workshop. ASHRAE 90.1 and the test standards referenced by ASHRAE 90.1 do not specifically provide test conditions for testing a condensing boiler. Further, since commercial condensing boilers may not be on the market, the comments ofthe attendees to the workshop, were that it was not necessary for DOE to develop a test procedure that is different from the test procedure specified in the ASHRAE 90.1 referenced test standards at the present time. NIST disagrees with the comments from the workshop attendees on this issue. Since a condensing boiler will provide 

### a significantly higher efficiency, NiST believes that even ifthere is no commercial condensing boiler on the market at the present time, 

### a test procedure should be provided for any future manufacturers ofcondensing boilers in order to give credit for their effort in providing users a product \vith a higher efficiency. In addition, a test procedure is needed for the future design option evaluation for the minimum efficiency standard. It is noted that even though the ASHRAE 90.1 referenced test standards do not specify 

### a test procedure, there is an industry test procedure, the ASHRAE standard 103-1993, for measuring the**in~reased** energy efficiency ofa residential condensing boiler under steady state test condition. The test procedure has been in practice over the last decade. Therefore, NJST recommends adopting the test procedure as specified in section 9.2 and 11.3.7 ofASHRAE Standard 103-1993 as an optional test procedure for the determination ofthe increment in energy efficiency due to the condensing feature ofa condensing boiler. Modular Boilers and Multiple Boilers The issue ofhow to test a modular boiler assembly (consisting ofa group ofindividual smaller boilers or modules installed 

### as a unit ":'lith no intervening stop valves) or a multiple boiler assembly (consisting ofa group ofindividual boilers installed as a unit with intervening stop valves between the individual boilers) was raised during tlle DOE April 1998 workshop. Since a modular boiler assembly or a multiple boiler assembly usually consisted ofindividual boilers or modules ofsimilar design and construction, NIST recommends that for those type ofcommercial packaged boilers, a
30 FILE Q:\data\ee-40\ee-43\43common\nasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### singleboiler from the assen~bly be tested and its efficiency be applied asthe efliciency rating ofthe boiler assembly. Testing a Stem1and Hot Water Boiler as a Stearn Boiler The current industry practice oftesting a steam and hot water boiler as a steam boiler and reportingthe eficierfcy sating as applicableto the boiler sold as a hot water boiler was discussed during the DOE 

### April 1

### 998 workshop. Sincethe stem7 test will general1 y provide an efficiency rating lower than the rating obtained by a hot water test; the comments suggested that this practice should be allowed in a DOE 

### test procedure. WST 

### agrees with this and is proposing today that mar~ufacturers be allo\ved the option 

### of repor-Gng the eficiency rating of'a steam and hot waterboiler from the test result obtained 

### Izy testing the boiler as a steam boiler. Additionally. at the option ofthe manufacturers,the water version of a steam and water boiler may be tested as a water boiler. 4.3.3 

### Packaged Boiler Used 

### tAas Hot Water 

### Supply Boiler 

### Hot water supplyboilers are designed and marketed to provide service water heating. Addendum n to AS- Standard 90.1-1989 requires hot water supply boilers to meet the same energy efficiency requirements aswater heaters.NIST recommends that the DepartJn~erit consider adoptioi~ of the .4SHlME 

### approach related to con~mercial hot water supply boilers, requiring hot water supplyboilersto meet the energy eEciency standards for comnlercial water heaters. During the April 1998cvorkshop. the testing of a boiler that is used as a hot water supply boiler was discussed.The statute does not specifically list the term "hot water supply boiler" in the EPAct definitions for water heaters. EPAct, Sec.122(a)(l)fB)(F) I-Iowever, the definitionfor an "unfiredhot water swragetank" was included. Sec.122(a)(I)(B)(F), In certain installations,the hot water in an unfired hot water storage tank is supplied by a hot water supply boiler. As discussedin 4.2.2, the addendum n 

### to AS^^ 

### Standard 90.1-1989 requires hot water supply boiiers tomeet the same energy eEciency requiremer~is as instantaneous water heaters. Avaiiabte evidenceappearsto indicatethat this equipment meetsthe stamtory definition ofwater heaters EPCA 

### fj340(12)(A). Therefore;NSTrecommendsthat the Department consider adoption of the 

### ASHRAE approach related to commercial hot water supply boilers. 4.3.4 

### Proposed 'I'estProcedures for Commercial "Packaged"Boiiers 

### hTST reccrnlnlei~ds atest procedure for measurenleilt ofthe enersy cons~~mption ad energy efficiency of Commercial "Packaged" Boilers, as outlined in Appendix 

### E.

FILE Q:\data\ee4Ok-43\43commm~seri\nistrepWept wpd October 6,1998 (7:MPM) single boiler from the assembly be tested and its efficiency be applied as the efliciency rating ofthe boiler assembly. Testing a Steam and Hot Water Boiler as a Steam Boiler The current industry practice oftesting a steam and hot water boiler as a steam boiler and reporting the efficiettcy rating as applicable to the boiler sold as a hot water boiler ,vas discussed dUling the DOE April 1998 workshop. Since the steam test Vvill generally provide an efficiency rating lower than the rating obtained by a hot water test, the comments suggested that this practice should be allowed in a DOE test procedure. NIST agrees with this and is proposing today that manufacturers be allowed the option ofreporting the efficiency rating ofa steam and hot waterboiler from the test result obtained by testing the hoiler as a steam boiler. Additionally, at the option ofthe manufacturers, the water version ofa steam and water boiler may be tested as a water boiler. 

### 4.3.3 Packaged Boiler Used As HotWater Supply Boiler Hotwater supply boilers are designed and marketed to provide service water heating. Addendum
n to ASHRAE Standard 90.1-1989 requires hot water supply boilers to meet the same energy efficiency requirements as water heaters. NIST recommends that the Departrnent consider adoption ofthe ASHRAE approach related to commercial hot water supply boilers, requiring hot water supply boilers to meet the energy efficiency standards for commercial water heaters. During the April 1998 workshop, the testing ofa boiler that is used as a hot water supply boiler was discussed. The statute does not specifically list the tenn "hot water supply boiler" in the EPAct definitions for water heaters. EPAct, Sec. 122(a)(1)(B)(F). However, the definition for an "unfired hot water stcrage tank" was included. Sec.122(a)(1)(B)(F), In cel1ain instaHations, the hot water in an unfired hot ,\-vater storage tank is supplied by a hot water supply boiler. As discussed in 4.2.2, the addendum n to ASHR..A..E Standard 90.1-:1989 requires hot water supply boilers to meet the same energy efficiency requirements as instantaneous water heaters. Available evidence appears to indicate that this equipment meets the statutory detlnition ofwater heaters EPCA §340(12)(A). Therefore, NIST recommends that the Department consider adoption ofthe ASHRAE approach related to commercial hot water supply boilers. 

### 4.3.4 Proposed Test Procedures for Commercial "'Packaged" Boilers NiST recommends a test procedure for measurement ofthe eneq,1)' consumption and energy efficiency ofCommercial "Packaged" Boilers, as outlined in Appendix 

### E.

31 FILE Q:\data\ee-40\ee-43\43connnon'nasserilnistreplnistrept.wpd October 6.1998 (7:04PM)4.4 

### Test Protocols for Commercial Furnaces 4.4.1 

### General Discussions This subsection discussesthe main issues identified for the commercialfurnaces.The issues are categorized under 

### ASW 90.1referenced test standards,the definition of' thernd efficiency. and the test procedures for the measurement of energy efxciency

. 

### 4.4.2 

### ASHKAE 90.1 

### Referenced Test Standards EPCA requires that the testing proceduresfor measuring the efficiency of commercial warn air furnaces shall be those gerleralfy accepted industry testingprocedures or rating procedures developed or recognized by 

### the American Society of Heating, Refrigera~ing and Air Conditioning Engineers, as referenced in AS-IIES Standard 90.1 and 

### in effect on June 30. 1392. And 

### if such 

### an industry test procedure or rating procedure for warm air hrnaces is amended, 

### the Secretary of Energy is required to adopt such revisions unless the Secretaq determines that to do so would not produce test results which reflect energy efficiency,energy use, and estimated operating costs, and would be burdensome to conduct. As referenced in 

### ASHME 90.1 and in effect on June 30, 1992,there is one industry test standard for gas fired furnaces and one for oil fired furnaces.These include the American National Standard Institute ANSlZ21.47-1987for gas-fired central furmaces (.ANSI 221.47) and the Undermiters Laboratory Standard 727- 1986for oil-fired central furnaces

### (UL 727:).Since the year 1989,both industry test standards have gone through multiple revisions. AXSI 221.47-1987 was revised to AiYSI 221.47-1993, and UL, 

### 727-1986 was revised to 

### L;'f, 727-1994. Also, 

### ASFiRAE 90.1-1989itself 1tia.srevised via Addenda 90.

### Ib, 90.

### Id, and 90.lein 1992, 90.1.c, 90.1%and 90.1 

### i in 1993, and 90.1rn-1995 and 90.

### In- 1997. Currently, a revision to 

### ASHRM 90.1-1989, named 

### ASW 90.1-1989R, is going through the 

### ASHRAEpt~biic review process. Ofthe two industry test standardsrevised after June 30. 'I

### 992, there is no change in tlie energy performance test sections of either test standardsfrom their prior versions. Therefore, MST recommendsthat 

### DOE incorporateby referencethe latest versions ofthe two referenced test procedures. These test standards are 

### ANSI 

### 221.47-1993 

### .forgas-fired central furnaces and 

### UL 727-1994 for oil-fired central &maces. 4.4.3 

### Definition 

### ofThermal EI'Eciency 

### EPCA specifies the term thermal ef3;ciency for wm air furnaces 

### The referenced test standards explicitly (ANSX 221.47) or implicitly 

### (L1L 727) specified the calculation of the thermal efficiency (221.47) or efficiency 

### (UL 727) as equal to (100

## - percent flue loss), which is the customary definition of combustion efficiency for fossil-fueled equipment During the 

### April 1998workshop, the issue was raised as to whether the energy descriptor as defined in the statute shouldbe renamed from thermal efficiency to colnbustion efficiency The consensus of the attendeesto the urorkshop were that in a 

### DOE test procedure, the term thermal efficiency should remain as specified in the statute Therefore, 

### hTST recommends that 

### DOE use the thermal efficiency as the energy descriptor for cornrnercial 

### warm air h~aces and define it as equal to 100 

### mirlus the perceilt flue loss, consiste~lt with industry practice.

FILE Q:Lb.taiee-40\ee-43W3wmmm~\nistrep~e@.wpd Octoba6,1998 (7:04PM) 

### 4.4 Test Protocols for Commercial Furnaces 4.4.1 General Discussions This subsection discusses the main issues identified for the commercial furnaces. The issues are categorized under ASHRAE 90.1 referenced test standards, the definition ofthermal efficiency, and the test procedures for the measurement ofenergy efficiency. 

### 4.4.2 ASHR..<\E 90.1 Referenced Test Standards EPCA requires that the testing procedures for measuring the efficiency ofcommercial warm air furnaces shall be those generally accepted industry testing procedures or rating procedures developed or recognized by the American Society ofHeating, Refrigerating and Air Conditioning Engineers, as referenced in ASHRAEIIES Standard 90.1 and in effect on June 30, 1992. And if such an industry test procedure or rating procedure for warm air furnaces is amended, the Secretary ofEnergy is required to adopt such revisions unless the Secretary determines that to do so would not produce test results which reflect energy efficiency, energy use, and estimated operating costs, and ""muld be burdensome to conduct. As referenced in ASHRAE 90.1 and in etrect on June 30, 1992, there is one industry test standard for gas fired furnaces and one for oil tired furnaces. These include the American National Standard Institute ANSI Z21.47-1987 for gas-fired central furnaces (ANSI Z21.47) and the Underwriters Laboratory Standard 727-1986 for oil-fired central furnaces (UL 727). Since the year 1989, both industry test standards have gone through multiplerevisions. ANSI Z21.47-1987 was revised to**AJ.~SI** Z21.47-1993, and UL 727-1986 was revised to tTL 727-1994. Also, ASHRAE 90.1-1989 itselhvas revised via Addenda 90.1b, 90.ld, and 90.Ie in 1992, 90.1c, 90.1g, and 90.1i in 1993, and 90.1m-1995 and 90.1n-1997. Currently, a revision to ASHRAE 90.1-1989, named ASHRAE 90.1-1989R, is going through the ASHRAE public review process. Ofthe two industry test standards revised after June 30, 1992, there is no change in the energy performance test sections ofeither test standards from their prior versions. Therefore, NIST recommends that DOE incorporate by reference the latest versions ofthe two referenced test procedures. These test standards are ANSI Z21.47-1993 for gas-fired central furnaces and UL 727-1994 for oil-tIred central furnaces. 

### 4.4.3 Definition ofThermal Efficiency EPCA specifies the term thermal eniciency for warm air furnaces. The referenced test standards explicitly (ANSI Z21.47) or implicitly (UL 727) specified the calculation ofthe thermal efficiency (Z21.47) or efficienc), (UL 727) as equal to (100

- percent flue loss), which is the customary definition ofcombustion efficiency for fossil-fueled equipment. During the April 1998 workshop, the issue was raised as to whether the energy descriptor as defined in the statute should be renamed from thermal efficiency to combustion efficiency. The consensus ofthe attendees to the workshop were that in a DOE test procedure, the term thermal efficiency should remain as specified in the statute. Therefore, Nl:ST recommends that DOE use the thermal efficiency as the energy descriptor for commercial warm air furnaces and define 

### it as equal to 100 minus the percent flue loss, consi stent with indusny practice.

32 FILE Q:\datalee-40\ee-43\43common\nasseri'cistreplnistrept.wpd October 6,1998 (7:04PM)

### 4.4.4 

### Test Procedures bbr the MeasurementofEnergy Efficiency 

### Flue Loss Calculation for Oil Fired Furnaces As stated above, the referenced test standard for oil fired furnaces,UL 727, 

### does not provide a calculationprocedure for the determinationof flue loss. However;the value fur the percent loss is needed for determiningthe efficjency To obtain a value for the il

### tle loss, the flue loss cdciilation as specified in the ASHRAE 90.1referenced test standard for oil fired boilers 

### - the 1989edition ofthe Hydronics Institute Testing and Rating Standard for HeatingBoilers, was suggested asthe procedure for calculatingthe flue loss of an oil fired furnace. There was no comment opposing that suggestionduring heDOE April 1998workshop.NIST is thereforeproposing that the calculation procedure for flue loss as specified in the f 

### 989 HydronicsInstitute testing and rating standard for oil-fired9boiiersbe 

### adopted as the calculation procedure for flue loss for oii-fired furnaces. Condensing Furnaces The issue oftesting a condensing furnace (awarm air furnace designedto condensepart ofthe water vapor in the flue gases and is equipped with a means ofcollecting and draining this condensate)wasraised and discussed during the 

### DOE April. 1098workshop ASI-RAE90.1 

### and the two test standardsreferenced by ASHRAE 90 1 

### donot specifically provide test conditions for testing a condensingf~~mace. Attendees at the April 1998worksliopfrom the furnace industry 

### (GAFMA, York International, and Lennox) stated that there 

### are very feu;, if any, commercial (unitary equipmenz or roofiop) condensirlgfurnaces on the market, andjt is dif'ficultto include the provision required of a condensing furnace in a roof-top installation. Therefore. it is not necessary to have a provision in a DOE test procedure for testing the coildensingfeature of a commercial &mace at the present time The Department of Energy disagrees with the comnlentsfrom the workshop attendees on this issue. Since a condensing furnace will protide a significantiyhigher effxciency, DOE 

### believes that, even if there is no con~mercial conde~~sing furnace on the market at the pi-esei~t time, a test procedure shouldbe provided for any 

### futuremanufacturersof condensing fbrnacesin order to give credit for their effort in providing users a product with a higher efficiency.In 

### addition, a test procedure is needed for the fiiture design optiorl evaluation for the minimum effxciency standard. It isnoted that even though the ASHRM 90.I 

### referenced test standardsdonot specify a test procedure. there is an industry test procedure, the ASHK4E standard 103-1993, for measuring the increased energy efficiency of a residential condensingfurnaces under steady statetest condition. Tbat test procedure has been in use for the evaluation of the energy efficiency of residential central &mace over the last decade. Therefore, NIS'T recommends adopting the test procedure as specified in section 9.2 and 11.3.7

### ofASHEL4E Standard 103-1993 as an optional test procedure for the determination oftheincrement in energy eMiciency dueto the condensing feature of a condensing furnace. 4.4.5 

### Proposed Test Procedures for Commercial Furnaces 

### XIST recommends a test procedure for measurement ofthe energy consumption and energy efficiency of commercial fuxnaces, as outlinedin Appendix F.

33 FILE Q:bta\ee-40\ee-43\4komm~~strep~ept.wpd October6, 1998 (7:04PM) 4.4.4 Test Procedures for the Measurement ofEnergy Efficiency Flue Loss Calculation for Oil Fired Furnaces As stated above, the referenced test standard for oil fired furnaces, UL 727, does not provide a calculation procedure for the determination offlue loss. However, the value for the percent loss is needed for determining the efficiency. To obtain a value for the tlue loss, the flue loss calculation
as specified in the ASHRAE 90.1 referenced test standard for oil fired boilers

- the 1989 edition ofthe Hydronics Institute Testing and Rating Standard for Heating Boilers, was suggested as the procedure for calculating the flue loss ofan oil fired furnace. There was no comment opposing that suggestion during the DOE April 1998 workshop. NISI' is therefore proposing that the calculation procedure for flue loss as specified in the 1989 Hydronics Institute testing and rating**~** standard for oil-fired boilers be adopted as the calculation procedure for flue loss for oil-fired furnaces. Condensing Furnaces The issue oftesting a condensing furnace (a warn1 air fumace designed to condense part ofthe water vapor in the flue gases and is equipped with a means ofcollecting and draining this condensate) was raised and discussed during the DOE April 1998 workshop. ASHRAE 90.1 and the two test standards referenced by ASHRAE 90.1 do not specifically provide test conditions for testing a condensing furnace. Attendees at the April 1998 workshop from the furnace industry (GA..t\1A, York International, and Lennox) stated that there are very few, ifany, commercial (unitary equipment or rootlop) condensing furnaces on the market, and it is diff'icult to include the provision required ofa condensing furnace in a roof-top installation. Therefore, it is not necessary to have a provision in a DOE test procedure for testing the condensing feature ofa commercial furnace at the present time. The Department ofEnergy disagrees with the comments from the workshop attendees on this issue. Since a condensing furnace 

### will provide a significantly higher efficiency, DOE believes that,
even ifthere is no commercial condensing fumace on the market at the present time, a test procedure should be provided for any future manufacturers ofcondensing furnaces in order to give credit for their**~'fort** in providing users a product with a higher efficiency. In addition, a test procedure is needed for the thture design option evaluation for the minimum efficiency standard. Itis noted that even though the ASHRAE 90.1 referenced test standards do not specify a test procedure, there is an industry test procedure, the ASHRAE standard 103-1993, for measuring the increased energy efficiency ofa residential condensing furnaces under steady state test condition. That test procedure has been in use for the evaluation ofthe energy efficiency of residential central furnace over the last decade. Therefore, NIST recommends adopting the test procedure as specified in section 9.2 and 11.3.7 ofASHRAE Standard 103-1993 as an optional test procedure for the determination ofthe increment in energy efficiency due to the condensing feature ofa condensing furnace. 4.4.5 Proposed Test Procedures for Commercial Furnaces NiSI' recommends a test procedure for measurement ofthe energy consumption and energy efficiency ofcommercial furnaces, as outlined in Appendix F.

33 FILE Q:'data\ee-40\ee-43\43connnonlnasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)4.5 

### Test Protocols for Commercial Air Conditionersand 

### Heat Pumps Duringthe April 1998public workshop, discussionswere held with 

### representatives from the

## ARI, its manufacturer members, and Federal and state agencies on issues related to the test proiocols for commercial air cgi~diti oners and heat pumps. Also, letters were subsequently received from 

### Mr. William Keese, California Energy Con~mission. (datedMay 28, 1998)and 

### Mr. Lawrence

### R. N'ethj e, Air-Conditioning and Refrigeration Institute, (dated May 3, 1 

### 998.) 4.5.1 

### General Discussionls 

### This subsectiondisc~isses the mail1 issues identifiedfor the conlmerciai air co~lditioners and heat pumps. The issues are 

### categorized under heat pumps with hedting-only filncxion and computer room air conditioners. 4.5.2 

### Heat Pumps with Heating-only Function 

### The heat pumps with heating-only functions do not appear to fall within the statutory definition for covered equipment (Title 12,Chapter 77, 

### sec. 63

### 11 (8), (9j, 

### f 10)). 

### This obsewationis of little practical consequence because, based on the information obtained from fivemajor I-ILiAC 

### manufacturersand MU, 

### heating-only heat pumps are neither available on the U.S.market at this time nor are expected any time soon. 

### 4.5.3 Computer Room 

### Air Conditioners A 

### short data collection effort was conducted to obtain information about the computerroom air conditioners.The

### HVACIR Directory Source Guidepublished by the Air Conditioning, Heating (y: 

### Refrigeration Ne~s (January 12. 

### 1998)lists aboutthirty suppliers of air conditionersfor data processing rooms. Over one half ofthe Listed manufacturers supply spot coders 

### or "portable" cooling systems; which are used forbackup coolingifthe main cooling system either fails or falls short.Among the manufacturerslsuppliers of prirnaq cooling systems for computerrooms, there appear to 

### be Gve or six key playersincludingI.,iebert, Data Aire, Stulz, Air-Flow, artd Compu-Aire. DesisDifferences While the basic design concept and vital components 

### of computerroom air conditioners are the same as those ofhuman comfort. air conditioners, certain design features areindeed different. These rnacl~ines aretypically designed to operate over a significantly smaller deadband around tlie setpoints, both for the temperature aswell asfor the humidity ratio. Accordingly, in addition to producingthe desired cooling effect, these machines nlust also have the ability to hurnidifjddehumidifyand reheat the air. 

### The design latent capacity typically represents 15%

### ofthe total load, which is below that for comfort air conditioning. The ~rrost common settings for computerroom air conditioneris a temperature of 72 

### "F and a relativehumidity of 50%. 

### In order to maintain atighter corltrol overthe humidity ratio, fieyuent dehumidificationisrequired. This dehumidification may have to be acliieved 

### by activatingthe 

### unit to 

### cod the air eveil under conditions when the temperature alone does not warrant it. This would push the temperature below the setpoint, which is then correctedby reheating the air. In order to accomplish all this, most computerroom air conditionersirtcorporate sophisticated control systems, which add to the
34 FILE Q:~ta\ee4O\ee-43\4komm~~nistrephstrept.wpd Octoba 6,1998 (7:04PM) 

### 4.5 Test Protocols for Commercial Air Conditioners and Heat Pumps During the April 1998 public workshop, discussions were held with representatives from the ARl, its manufacturer members, and Federal and state agencies on issues related to the test protocols for commercial air**c~nditioners** and heat pumps. Also, letters \vere subsequently received from Mr. William Keese, California Energy Commission, (dated .May 28, 1998) and I\1r. LawTence R. \Vethje, Air-Conditioning and Refrigeration Institute, (dated I\1ay 4, 1998.) 

### 4.5.1 General Discussions This subsection discusses the main issues identified for the commercial air conditioners and heat pumps. The issues are categorized under heat pumps with heating-only function and computer room air conditioners. 

### 4.5.2 Heat Pumps with Heating-only Function The heat pumps with heating-only functions do not appear to fall within the statutory definition for covered equipment (Title 42, Chapter 77, sec. 6311 (8), (9), (10)). This observation is oflittle practical consequence because, based on the infonnation obtained from five major HVAC manufacturers and ARI, heating-only heat pumps are neither available on the U.S. market at this time nor are expected any time soon. 

### 4.5.3 Computer Room Air Conditioners A short data collection effort was conducted to obtain infonnation about the computer room air conditioners. The HV ACIR Directory Source Guide published by the Air Conditioning, Heating & Refrigeration**Ne~s** (January 12, 1998) lists about thirty suppliers ofair conditioners for data processing rooms. Over one halfofthe listed manufacturers supply spot coolers or "portable" cooling systems, which are used for backup cooling ifthe main cooling system either fails or falls short. Among the manufacturers/suppliers ofprimary cooling systems for computer rooms, there appear to be five or six key players including Liebert, Data Aire, Stulz, Air-Flow, and Compu-Aire. Design Differences \Vhile the basic design concept and vital components ofcomputer room air conditioners are the
same as those ofhuman comfort air conditioners, certain design features are indeed different. These machines are typically designed to operate over a significantly smaller deadband around the set points, both for the temperature as wen as for the humidity ratio. Accordingly, in addition to producing the desired cooling effect, these machines must also have the ability to humidify/dehumidify and reheat the air. The design latent capacity typically represents 15% ofthe total load, which is below that for comfort air conditioning. The most common settings for computer room air conditioner is a temperature of72 

### OF and a relative humidity of50%. In order to maintain a tighter control over the humidity ratio, frequent dehumidification is required. This dehumidification may have to be achieved by activating the unit to cool the air even under conditions when the temperature al<:>ne does not warr<:!cnt it. This would push the temperature below the set point, which is then corrected by reheating the air. In order to accomplish all this, most computer room air conditioners incorporate sophisticated control systems, which add to the

34 FILE Q:\data\ee-40\ee·43\43comroonlrnsserimistrepmistrept.wpd October 6,1998 (7:04PM)

### The ability ofthe units to maintain sufficient cooling effect under extreme conditions (over a typical range of'O "I; 

### to 105 

### "I;) 

### is critical.The coits are usually larger and soisthe air flow rate (typically 425-500 cfmiton as compared to 400 cfm/ton for comfort air conditioners).Another diEerencein design concerns sen7iceability-the units have tobe designed sothat they can be serviced under any weather conditions. Unlike a typicd comfort air conditioner, most 

### ofthe 

### controls and sen7ice-requiring coinporlents are located inside the building Thereheat system may alsobe of a special design (low watt, finnedtubular design) which 

### would not-get red hot (in order to avoid the triggeringof smoke detectors through the burning of dust particles). 'The manufacturing quality of the computer room air conditioner components also needs to be superiorto that of comfort air conditionercomponents,becausethe equipment needs to operate for longer hours each day, requiring a longerrun life. Efficiency of ConlputerRoom Air Conditioners

0 

### Representatives of computerroom air conditionermanufacturerslsuppiiers contended that, to their customers, the ability ofthe units to operate under severe conditions and to remain within the narrow tolerance lirnitsis crucial, and the cost of consumed energy is not a major consideration. Accordingly, high energy efficiencymay not always be their primary concern. Most ofthem have heard aboutthe enerD efficiencyregulations,but tend to relate these regulations to residential appliances. Veq few appearedtobe aware of'the possibility that EPAc? provisions, now already in effect, could apply to their equipment At least one manufacturer isunder the impressioi~ that their systems are exempt from regulations because they are designed for "process coolingenvironment" and not for "comfort cooling." When asked, most manufacturers/suppliersalso did not appear to be intimidatedby the EPAct efficiencylevels (8.9

### EER for small air-cooled comlnercial air conditioners and 

### 8.5EER for large air-cooled commercial air conditioners).With one exception, all representatives indicated that their units were already designed to operate close to the WBctXerrels. This representative indicated 

### an EER of 8.7

### for most of their units. Based on conversations, it atso appeared that vvliile an EER of 9.0

### is close to what is already available in the market, and is not considered a problem to meet, pushing the efficiency level up by one more point (i.e., 

### an EER of 10.0)

### would definitely require significant changes in design and push up the equipment costs. California Energy C~mmission (CEC) establisheda 

### certification program for computerroom air conditioners. Under this program. manufacturerscertifqito CEC their equipment using mSLIASHRAE Standard 127, "hlethod of Testingfor Rating Computer and Data Processing Room Unitary Air-Conditioners", rather than ARI Standard 2 

### 10/240,which is stipulated by EPAct (via ASE-TRAEStandard 90.1). 

### At the outset of the certif'ica~ion program. 

### CEC tested a few computerroom air conditioners accordins toboth standards, determined equivalent levels of EER, and adopted EER levels for computerroom air conditioners based on ASHlbE Standard f

### 27 that were equivalentto those obtained based on -4R.I 

### Standard 3

### 101240. In April 1998,637 

### certified computer room 

### air conditioners were on CEC books.

FILE Q:Lla~\ee4O\ee-43\43comm\nasseriSs~~Sstrept,wpd October6,1998 (7:MPM) cost. The ability ofthe units to maintain sufficient cooling effect under extreme conditions (over a typical range of0 OF to 105 OF) is critical. The coils are usually larger and so is the air flow rate (typically 425-500 cfm/ton as compared to 400 cfm/ton for comfort air conditioners). Another difference in design concerns serviceability- the units have to be designed so that they can be serviced under any weather conditions. Unlike a typical comfort air conditioner, most ofthe controls and service-requiring components are located inside the building. The reheat system may also be ofa special design (low watt, finned tubular design) \vhich would not get red hot (in order to avoid the triggering of smoke detectors through the burning ofdust particIes). The manufacturing quality ofthe computer room aIr conditioner components also needs to be superior to that ofcomfort air conditioner components, because the equipment needs to operate for longer hours each day, requiring a longer run life. Efficiency ofComputerRoom Air Conditioners**~** Representatives ofcomputer room air conditioner manufacturers/suppliers contended that, to their customers, the ability ofthe units to operate under severe conditions and to remain within the narrow tolerance limits is crucial, and the cost ofconsumed energy is not a major consideration. Accordingly, high energy efficiency may 110t always be their primary concern. Most ofthem have heard about the energy efficiency regulations, but tend to relate these regulations to residential appliances. Very few appeared to be aware ofthe possibility that EPAc.:t provisions,
now already in effect, could apply to their equipment. At least one manufacturer is under the impression that their systems are exempt from regulations because they are designed for "process cooling environment" and not for "comfort cooling." When asked, most manufacturers/suppliers also did not appear to be intimidated by the EPAct efficiency levels (8.9 EER for small air-cooled commercial air conditioners and 8.5 EER for large air-cooled commercial air conditioners). \Vith one exception, all representatives indicated that their units were already designed to operate close to the EPAct levels. This representative indicated an EER of 8.7 for most oftheir units. Based on conversations, it also appeared that while an EER of9.0 is close to what is already available in the market, and is not considered a problem to meet, pushing the efficiency level up by one more point (i.e., an EER of 10.0) would definitely require significant changes in design and push up the equipment costs. California Energy C\>mmission (CEC) established a certitkation program for computer room air conditioners. Under this program, manufacturers certify to CEC their equipment using ANSIIASHRAE Standard 127, "Method ofTesting for Rating Computer and Data Processing Room Unitary Air-Conditioners", rather than ARI Standard 210/240, which is stipulated by EPAct (via ASHRAE Standard 90.1). At the outset ofthe certification program, CEC tested a few computer room air conditioners according to both standards, detennined equivalent levels of EER., and adopted EER levels for computer room air conditioners based on ASHRAE Standard 127 that were equivalent to those obtained based on A.R.I Standard 210/240. In April 1998, 637 certified computer room air conditioners were on CEC books.

35 FILE Q:'datalee-40Iee-43143connnonlnasseri'nistrep'nistrept.wpd October 6, 1998 (7:04PM)

### While specific features of computer room air conditionersdo not preclude them fiom achieving efficiency levels similarto ttlose of the majority of the 

### air.conditionersoffered 

### on the market for different commercial applications,an opposing consideration comes fi-omthe fact that the currently used procedurefortesting these systems, ASHRAE Standard 127,

### is 

### not stipulated by 

### AS- Standard 90.1. During September 1998ASmG 90.1 committee interim meeting held in Chicago, it was proposed that if 

### computerroom air conditjoners are used prin~arily for cooling computers, they should be outside the scope ofthe Standard,u711ereas if they 

### are used primarily for comfort coding, they must be tested using the 

### AN standards cited in the standard. Based on the 

### above 

### discussions,the

### NIST recominendatio~~ is not to illclude computerroom air conditionersas covered equipment when used primarily for cooling con.puters. 4.5.4 

### Proposed Test :Proceduresfor ComrnerciaI Air Conditioners and Heat Pumps 

### h'IST recommendsa test procedure for measurement of the energy consumption and eners~ efficiency of commercial Air Conditioners and 

### Heat Pt~n~ps, as outlined in Appendix C.

FILE Q:Lb.ta~-40\ee-43\43common~\niskep~strept.wpd October 6,1998 (7:MPM) While specific features ofcomputer room air conditioners do not preclude them from achieving efficiency levels similar to those ofthe majority ofthe air conditioners otTered on the market for different commercial applications, an opposing consideration comes from the fact that the currently used procedure for testing these systems, ASHRAE Standard 127, is not stipulated by ASHRAE Standard 90.1. During September 1998 ASHRAE 90.1 committee interim meeting held in Chicago, it was proposed that ifcomputer room air conditioners are used primarily for cooling computers, they should be outside the scope ofthe Standard, whereas ifthey are used primarily for comfort cooling, they must be tested using the ARI standards cited in the standard. Based on the above siscussions, the NIST recommendation is not to include computer room air conditioners as covered equipment when used primarily for cooling computers. 4.5.4 Proposed 

### Test Procedures for Commercial Air Conditioners and Heat Pumps 1'.ilST recommends a test procedure for measurement ofthe energy consumption and enerf,ry efficiency ofcommercial Air Conditioners and Heat Pumps, as outlined in Appendix G.

36 FILE Q:\datalee-40Iee-43143common'nasserirustreprustrept.wpd October 6,1998 (7:04PM)5.0 

### Milestone Chart The following is 

### Dm's milestone chart 

### of follow-on activities for the commercial HVAC 

### and water heating equipment rulemaking.

FILE Q:~~\ee40\ee-43\4komm\nassai\nistrep~stiept.wpd Octoba6,1998 (7:04PM)W-...J9tii!rtf.oog0.Qtr4.1997IQtr1.1998IQtr2.1998IQtr3.1998IQtr4.19981Qtr1.19991Qtr2.19991Qtr3.19991Qtr4,1999IQtr1.2000TaskName!!layIJunIJulIAugISepIOctINovIDecrJanIFebIMariI1ITestProcedurePreparationr!!14'1OptionsandAltemati....esGuidanceQuestionsforDOE4ResponsetoGJidanceOuestions101112DraftProposedRulelanguageDOEReviewlabelOptionsandAlternativesPublicParticipationstakeholderConsultationWor1l:shopsOptionsandAlternativesDraftAnnouncement;:----t-AnnouncementConcurrence13logisticalArrangements15WorkshopSessionTranscript,DOEResponseandCommentsMgmt.NISTProposedLanguage--------------191=LogisticalArrangementsAnnouncementConcummce21WorkshopSession22ITranscript,DOEResponseandMgmt.f-niFinatNOPR(optionat)LogisticalArrangements27t-Wof1<shopSession__IIIIIIo,NISTr1IIIIIIIIIIIIt-IIEnergettcsDOe1xsI411·';IIIJOElt,-...OEDOEIOCS.,1:0ElO<lSI'"DOEIOCS28TranSCript,DOEResponseandcomp,entsMgmt.II_______"L__""__"_DOEIOCS____L____..,!-II<:>(0(1)"'1'::I'l:::rO(0::::§.gs=t:S•::(jq::J(Jq2_.Q$=:r.n=>5't)Sg('")(1)::r::Jv.....r.n2(1)(1)3p.>0&0.:::rg,gf§p.>ocr.-<a:(1)r.n"'1go§38(j§0...,f"+-FILE Q:\datake-40\ee-43\43comon~Lustiep~strept.wpd Octoba6,1998 (7:04PM)w001.I,r•<tSij\i:'l<;{102930313233343538373839404142434445484748Qtr4,1997Qtr1,1998Qt,2,1998IQtr3,1998TaskNameOctINovIDecJanIFebIMarAprjMayIJunIJulIAugISepPublicCommentRegulatoryHearingTranscriptandCommentsMgmt.RulePreparationNOPRInitialDraftPreambleRuleDOEConcurrenceOCS'U'EE-1PublicationofNOPRFinalRuleRevisionDOEConcurrenceoesPolicy/LegalEE·1PublicationofFinalRuleQtr4,1998Qtr1,19j9Qtr2,1999IQtr3,1999Qtr4,1999Qtr1,2000OctINovIDecJanIFebIMarAprIMayIJunIJulIAugISepOctINovIDecJanIFebIMarPublict19n""",.",--'"...I"DCElOCS&NIS..DCE&NIST-.....IIRDONIT0-,....DOElOCS&NSTOE&NISTrOE113

### APPENDIX A CORIPLL4NCE CERTIFICATION AND ENFORCE~NT SL%RIP&~G 

### PRQCEDITQTRES

5431.24 

### Units to 

### be tested. For each Basic model of a commercial air conditioner, heat pump, water heater, boiler and furnace, 

### any representation of energy efficiency shall be determinedbased on testing results such that: If 

### the basic model is 

### included in a DOE-approved voluntaq inclependent certificationprogram (as described in paragraph (g) of $43

### 1.621,the represenhtion Is the mean energy efliciency 

### of the basic model population, as determined using valid statistical procedures, or: 

### If the basic model is 

### not included in aDOE-approved voluntary independent certification program (as described in paragraph (g)

### of $431.62),

### a sanlpleof suEcient size shall be tested to insure that- (i) 

### any represented value of energy 

### efficiency shall be no greaterthan 

### the Iower of 

### (A) the mean of the sample, or

## B) the Iower 95 

### percent coni?dence limit of the true mean divided by 0.95, 

### or, (ii) 

### any represented value of energy usage shall be nojess than the greater of 

### (A) the mean of the sample, or 

### (B) the upper 95 

### percent confidence limit of the true mean divided by 1.05. 5431.62 

### Submission of data. 

### (a) Compliance certification. (1) Each manufacturer or private labeler, before distributingin cornmerce any basic model of a covered equipment subject to the applicableenergy conservation standard set forth inSubpan C 

### ofthis part, 

### shall certifq.to DOE 

### (or to a DOE-approved voluntary independent certification program, as described in paragraph (g) 

### of this section), by means of a compliance statement and a certification report, that eachbasic model meets the reyuirements of that standardon orbeforethe effective date of the 

### applicableenergy consenfation standard as prescribed in section 342 

### of the Act. Any documentation sent to 

### DOE by a manufacturer or private labeler (or his representative. such as a trade association), shall be sent

### by certified mail to: DepartmentofEnergy, OEce 

### ofEnergy Efficiency and 

### Renewable Energy, Office ofCodes and Standards,Fonestal Building, 1000Independence Avenue. SW,Washington, DC 20585-01

### 21. (2) The compliance statement. which shdl be sentto 

### DOE using the fornlat set forth in this appe~~dix, shall certify that: (i) 

### Thebasic model complieswith the applicable energy conservation standards; 

### (ii) AII required testing on which certification reports (which can be sent either directly to 

### DOE orto 

### a DOE-approved voluntary independent certification program) are based, is conducted 

### in conformance 

### with the applicabletest requirements prescribed in 10

### CFR Part 43 

### 1 Subpart

### B, and all 

### test data are reported in accordance with this subpart;

FILE Q:idata\ee-40\ee-43\43common~\mstrep\nistrept.~ October6,1998 (7:WPM) APPENDIX A COMPLV\NCE CERTIFICATION AND ENFORCKMENT SAl\fPLING PROCEDURES



### §431.24 Units to be tested. For each basic model ofa commercial air conditioner, heat pump, water heater, boiler and furnace, any represe1'ltation ofenergy efficiency shall be deternlined based 011 testing results such that: Ifthe basic model is included in a DOE-approved voluntary independent certification program (as described in paragraph (g) of §43l.62), the representation is the mean energy efticiency ofthe basic model population, as detemlined using valid statistical procedures, or; Ifthe basic model is not included in a DOE-approved voluntary independent certification program (as described in paragraph (g) of §431.62), a sanlple ofsufficient size shall be tested to insure that- (i) any represented value ofenergy efficiency shall be no greater than the lower of(A) the
mean ofthe sanlple, or (B) the lower 95 percent contidence limit ofthe true mean divided by 0.95, or, (ii) any represented value ofenergy usage shall be no less than the greater of(A) the mean of the sample, or (B) the upper 95 percent confidence limit ofthe true mean divided by 1.05. 

### §431.62 Submission ofdata. (a) Compliance certification. (1) Each manufacturer or private labeler, before distributing in
commerce any basic model ofa covered equipment subject to the applicable energy conservation standard set forth intSubpart C ofthis part, shall certifY to DOE (or to a DOE-approved voluntary independent certification program, as described in paragraph (g) ofthis section), by means ofa compliance statement and a certification report, that each basic model meets the requirements of that standard on orbefore the effective date ofthe applicable energy conservation standard as prescribed in section 342 ofthe Act. Any documentation sent to DOE by a manufacturer or private labeler (or his representative, such as a trade association), shall be sent by certitIed mail to: Department ofEnergy, Office ofEnergy Efficiency and Renewable Energy, Office ofCodes and Standards, Forrestal Building, 1000 Independence Avenue, SW, Washington, DC 20585-012l. (2) The compliance statement, which shall be sent to DOE using the fomlat set forth in this appendix, shall certifY that: (i) The basic model complies**~i.th** the applicable energy conservation standards; (ii) All required testing, on which certifi.cation reports (which can be sent either directly to DOE
orto a DOE-approved voluntary independent certification program) are based, is conducted in conformance with the applicable test requirements prescribed in 10 CFR Part 431 Subpart B, and all test data are reported in accordance with this subpart;

39 FILE Q:ldatalee-40lee-43143<:ommOll'nasseri\nistrep\nistrept.wpd October 6, 1998 (7:04PM)

### (iii) MI informationreported in certification reports is true, accurate, and complete; and
0 

### (iv) The manufactureror private labeler is aware of the penalties associated with violations ofthe Act and the regulations thereunder, and 18

### U.S.C. 1001 which prohibits knowingly making fdse statementstothe Federal Government. (3) For each basic model of a covered equipment,the certificatiorl report. one possible fornlatfor .cvhichis set f-brthin this appendix. shall be submittedto a DOE-approved voluntar);independent certificationprogram; as described in paragraph (g) ofthis section, or to 

### DOE. The certification report shall include the ecluipment type, equipment class (as denoted in 943 

### 1.321,manufacturer's name, private labelername(s), if applicable,the manuf'acturer'smodel nurnber(s), and tbr

. 

### (i) air-cooled three-phase electric central aj 

### r conditioners and central air conditioning heat pumps less 

### than 65,000 Btu 

### per hour bcmling capacity), split systemsor singlepackage, the seasonal eneraefficiency ratio and the heating seasonal performance factor. (iijair-cooled central air conditioners and central air conditioningheat pumps at or above 65,000 Bt1.1

### per hour (coolii~g capacity)and less than 135,000

### Btu per hour (cooling capstcity),the energy efficiency ratio (at a temperature rating of 95 

### "F db) and the coeficient ofperlomarice in the heating mode (at a high temperature rating of47 OF 

### db). 

### (iii) water-cooled, evaporatively-cooledand water-source cer~tral air conditionersand central air conditioning heat pwpsoflessthan 135.000 Btu 

### per hour (cooling capacity), the energy efficiency ratio (at a standard rating of 95 

### "F db, for evaporatively cooled equipment, and 85 

### "F 

### enteringwater temperature, for water-source and water-cooled ecluipment). (iv) water-source heat pumps less than 135.000 Btu 

### per hour (coolingcapacity), the coefficient of performance in the heating mode (at a standard rating 

### of 70 

### "F entering water temperature). (v) air-cooled central air conditioners and central air conditioningheat pumps at 

### or above 135,000 Btu per hour (cooling capacity) and less than 240,000 Btu per hour (cooling capacity). the energy efficiency ratio (at a standard rating of 95 

### "F db)and the coefficient ofperformance in the heating mode (at a lightemperature rating of47 

### "F db). (vi) water- and evaporatively-cooled central 

### air conditioners and central air conditioningheat pumps at or above 135.000 Btu per hour (cooling capacity) and less than1 340,000 

### Btu per hour (cooling capacity), the energy efficiency ratio (according to AN 

### Standard 300-86). 

### (vii)packaged terminal air conditioners,the energy efijciency ratio (EER) in the cooling mode (at a temperature rating 

### of 95 OF 

### db). (viii) packaged terminal heat pumps, the energy efficiency ratio (EER)in the cooling mode (at a temperature rating of 95 

### "Fdb), and the coetxcient ofpefiormance (COB) in the heating mode (at a standard rating of47 "Fdb). 0 

### (ix) gas- and oil-fired warm air %maces 

### (with a capacity of 225,000 Btu per hour or more), the minimum thermal efficiency at the maximum rated capacity. (x) gas- and oil-fired con~merciai packaged boilers (with a capacity of 300,000

### Btu per hour or

40 FILE Q:\data\ee-lO\ee-43i43comon~Lu.sb'epLu.strept.wpd October6,1998 (704PM) (iii) All information reported in certification reports is true, accurate, and complete; and



# .. (iv) The manufacturer or private labeler is aware ofthe penalties associated with violations ofthe Act and the regulations thereunder, and 18 

### U.S.C. 1001 which prohibits knowingly making false statements to the Federal Government. (3) For each basic model ofa covered equipment, the certification report, one possible format for which is set forth in this appendix, shall be submitted to a DOE-approved voluntary independent certification program, as described in paragraph (g) ofthis section, or to DOE. The certification report shall include the equipment type, equipment class (as denoted in §431.32), manufacturer's name, private labeler name(s), ifapplicable, the manufacturer's model number(s), and for: (i) air-cooled three-phase electric central air conditioners and central air conditioning heat pumps less than 65,000 Btu per hour (cooling capacity), split systems or single package, the seasonal energy efficiency ratio and the heating seasonal performance factor. (ii) air-cooled central air conditioners and central air conditioning heat pumps at or above 65,000 Btu per hour (cooling capacity) and less than 135,000 Btu per hour (cooling capacity), the energy efficiency ratio (at a temperature rating of95 

### OF db) and the coefficient ofperformance in the heating mode (at a high temperature rating of47 

### OF db). (iii) water-cooled, evaporatively-cooled and water-source central air conditioners and central air conditioning heat PU{llpS ofless than 135,000 Btu per hour (cooling capacity), the energy efficiency ratio (at a standard rating of95 

### OF db, for evaporatively cooled equipment, and 85 

### OF entering water temperature, for water-source and water-cooled equipment). (iv) water-source heat pumps less than 135,000 Btu per hour (cooling capacity), the coefficient of performance in the heating mode (at a standard rating of70 

### OF entering water temperature). (v) air-cooled central air conditioners and central air conditioning heat pumps at or above 135,000 Btu per hour (cooling capacity) and less than 240,000 Btu per hour (cooling capacity), the energy efficiency ratio (at a standard rating of95 OF db) and the coefficient ofperformance in the heating mode (at a high temperature rating of47 

### OF db). (vi) water- and evaporatively-cooled central air conditioners and central air conditioning heat pumps at or above 135,000 Btu per hour (cooling capacity) and less than 240,000 Btu per hour (cooling capacity), the energy efficiency ratio (according to ARI Standard 360-86). (vii) packaged terminal air conditioners, the energy eftlciency ratio (EER) in the cooling mode (at
a temperature rating of95 

### OF db). (viii) packaged terminal heat pumps, the energy efficiency ratio (EER) in the cooling mode (at a temperature rating of95 

### ''F db), and the coefficient ofperformance (COP) in the heating mode (at
a standard rating of47 

### OF db)

. 

# .. (ix) gas- and oil-fired warm air furnaces (with a capacity of225,000 Btu per hour or more), the minimum thermal efficiency at the maximum rated capacity. (x) gas- and oil-fired commercial packaged boilers (with a capacity of300,000 Btu per hour or

40 FILE Q:\data\ee-40\ee-43\43common\nasserilnistreplnistrept.wpd October 6, 1998 (i:04PM)

### more), the minimum combustion efficiency atthe maximum rated capacity. (xi) electric storage water heaters,the maximum standby loss, in percent per hour, or a 

### statement that the basic model has more than 140gallon storage capacity and the tank area is fhermitllp insulated to R-12.5. (xii) gas- and oil-fired storagewater heaters, the maximum standby loss, in percent per hour, or a statement that the basic model has more than 140gallon storage capacity, does not include a standing pilot light, and 

### the tank area isthermally 

### insulated toR-12.5. 

### (xiii) instantaneouswater heaterswith a storage volume of less than 10gallons, the minimum thermal eEciency in percent. (xiv) instantaneous water heaters with 

### a storage volume of 10 gallons or more, the minimrtm thermal eff'iciencyin percent, and the maximun~ standby loss, in percent per hotlr, or a statement that the basic rnodel $as more than 140

### gallon storage capadty, 

### does not include! a standing pilot light, and the tank area is thermally insulated to R-12.5.
(XV) 

### for unfired hot water storage tanks, the maximum heat loss (Bhr 

### per hour per square foot of tank surfacearea), or a statementthat the basic model has more than 140gallon storage capacity, does not include a standing pilot light, and the tank area is thermally insulatedto R-12 5. 

## Cb) New models All 

### infonxationrequired by

### paragraph (a) of this section must be submitted for new modelsprior to or concurrent with any 

### distribution of such models. Any 

### change to a basic model which affects energy consumption may constitute the addition of a new basic model subject to the requirements of $431.61 If such change does not alter compliance with the applicable energy consenration standardfor thebasic model, the new model shall he considered certified and not warrant additional testing. However, all informationrequired by paragraph (a) ofthis section for the new model must be submitted eitherto the authorized trade association or to 

### DOE (except for the compliance statement, which shall be submittedto DOE) Inforn~ation submiaed to DOE shall be sent, by certified mail, to: Department ofEnerhy. Office of Energy Efficiency and Renewable Energy, Office of Codes and Standards,Forrestal Building, 1000Independence Avenue, SW. Washington,DC 20585-0121. (c) Discontinued model. A 

### basic model is 

### discontinued when its production has ceased and is no longer being distributed. Sucl~ models shall be reported toDOE, 

### and sentby certified mail, to: Departmentof Enerjjq. Office of EneraEfficiency and RenewableEnergy, OEce of Codes and Standards,Forrestal Building: f

### 000 Independence Avenue, 

### S\V; Washington, 

### DC 30585-0121. For each basic model, this report shall include: equipmenttype, equipment class, the manufacturer's name, the private labeler name(s).if applicable, and the manufacturer's model number. (d) Maintenance of records. The manufacturer or private labeler of 

### any covered equipn~ent subjectto any ofthe energperformance standards, or proceduresprescribed in this part shall establish, maintain, 

### and retain the records of the underlying test data for all certification testing. Such records shall be organized and indexed in a fahion which rnakes them readily accessiblefor review by 

### IIOE upon request. The records shdl includethe supporting test data associated with

4

### 1 FILE Q:'dat!\ee-40\ee-43\4~onM\nistrep~eptptWpd October6,1998 (7:04PM) more), the minimum combustion efficiency at the maximum rated capacity. (xi) electric storage water heaters, the maximum standby loss, in percent per hour, or a statement that the basic model has more than 140 gallon storage capacity and the tank area is thelmaUy insulated to R-12.S. (xii) gas- and oil-fired storage water heaters, the maximum standby loss, in percent per hour, or a statement that the basic model has more than 140 gallon storage capacity, does not include a standing pilot light, and the tank area is thennally insulated to R-12.S. (xiii) instantaneous water heaters with a storage volume ofless than 10 gallons, the minimum thermal efficiency in percent. (xiv) instantaneous water heaters with a storage volume of 10 gallons or more, the minimum thermal efficiency in percent, and the maximum standby loss, in percent per hOllr, or a statement that the basic model J1as more than 140 gallon storage capacity, does not include a standing pilot light, and the tank area is thernlally insulated to R-12.S. (xv) for unfired hot water storage tanks, the maximum heat loss (Btu per hour per square foot of tank surface area), or a statement that the basic model has more than 140 gallon storage capacity, does not include a standing pilot light, and the tank area is thermally insulated to R-12.5. (b) New models. All infonnation required by paragraph (a) ofthis section must be submitted for new models prior to or concurrent with any distribution of such models. Any change to a basic model which affects energy consumption may constitute the addition ofa new basic model subject to the requirements of §431.61. Ifsuch change does not alter compliance \vith the applicable energy conservation standard for the basic model, the neVil model shall be considered certified and not warrant additional testing. However, all information required by paragraph (a) ofthis section for the new model must be submitted either to the authorized trade association or to DOE (except for the compliance statement, which shall be submitted to DOE). Infoffilation submitted to DOE shall be sent, by certified mail, to: Department ofEnerb:ry', Office ofEnergy Efficiency and Renewable Energy, Office ofCodes and Standards, Forrestal Building, 1000 Independence Avenue, SW, Washington, DC 20585-0121. (c) Discontinued model. A basic model is discontinued when its production has ceased and is no longer being distributed. Such models shall be reported to DOE, and sent by certified mail, to: Department ofEnerbf'y, Office ofEnergy Efficiency and Renewable Energy, Office ofCodes and Standards, Forrestal Building, 1000 Independence Avenue, S\V, \Vashington, DC 20585-0121. For each basic model, this report shall include: equipment type, equipment class, the manufacture1.ls natne, the private labeler name(s), ifapplicable, and the manufacturer's model number. (d) Maintenance ofrecords. The manufacturer or private labeler ofany covered equipment subject to any ofthe energy performance standards, or procedures prescribed in this part shall establish, maintain, and retain the records ofthe underlying test data for all certification testirig. Such records shall be organized and indexed in a fashion which makes them readily accessible for review by DOE upon request. The records shall include the supporting test data associated with

41 FILE Q:\data\ee-40\ee-43\43common\ru!sseri'cistreplnistrept.wpd October 6,1998 (7:04PM)

### tests performed on any test units to satisfj:the requirements ofthis subpart. The records shall be retained by the manufacturer or private labeler for a period oftwo years from the date that production ofthe applicable model has ceased. (el Third party representation. A manufacturer or private labeler may elect to use a third party to submitthe ce&fication report to DOE (for example a trade association or other authorized representative). Such certification reports shall include all the information specified in paragraph (4(3) 

### of this section? The certification report must be submitted with a compliance statement as specified in paragraph (a)i2)of this section. A third party representativemay also sul~mit discontinued model information on behalf of an authorizing manufactureror private labefer. 

## (t3 Amendment ofinfom~ati on. If 

### any compliancecertification infornlation on a statement or report previously submitted to DOE has changed,the manufacturer, private labeler or his representativemust submitthe re~ised information,by certified mail, either to the authorized trade association or to DOE 

### at: Department ofEnergy, Officeof Energy Efiiciency and Renewable Energy, Officeof Codes and Standards, Fonestal Building, 1000independence 

### Avenue, SW, 

### Washington,DC 20585-0

### 121. 

### (g) Voluntary Independent certificationProsram. A 

### DOE-approved program which meets the follouing criteria: 

### (I) Energy efficiency perfomaizcemetrics must be based on measurements. (2) Testingmust be conducted at an independent laborator)..,or under the supemision of independent personnel, in accordancewith the prescribed DOE test procedures. (3) 

### Periodicverification testing must be conducted on Iisted equipment, such that the performance 

### of each basic model is 

### checked at least every fiveyears. (4) 

### Equipment which 

### fails verification testing must eitherbe removed frorn production and sale, orbe delisted. (5) 

### Units selected for verification testing must be selected randomly frorn manufacnrrw's stock. (6)

### Theprocedures for the operation ofthe certification program rnrlstbe published in written form. Voluntary independent certification progranx can seek DOE approval by submitting to DOE, 

### in writing, information substantiating their conformance to the above criteria.

$431.70 

### Enforcement. (a) Performance standard 

### - (I) 

### Test notice. Upon receiving information in writing concerning the energy performance of a panicular covered equipment soldby a parrjcularmanufacturer or plivate labeler which indicatesthat the covered equipn~ent may not be in con~pliance with the applicable enerLT performance standard, accordingto $43

### 1.62,the Secretqmay conduct testing of that covered equipment under this sr~bpart by means of a test notice addressed to the manufactureror private labelerin accordance with the followingrequirements.

FILE Q:'&ta\eelZO\ee-43\4Xommon~\rushephstrepttwpd October6, 1998 (7:04PMf tests performed on any test units to satisfY the requirements ofthis subpart. The records shall be retained by the manufacturer or private labeler for a period oftwo years from the date that production ofthe applicable model ha.'O ceased. (e) Third party representation. A manufacturer or private labeler may elect to use a third party to submit the certification report to DOE (for example a trade association or other authorized representative). Such certification reports shall include all the information specified in paragraph (a)(3) ofthis section, The certification report must be submitted with a compliance statement as specitied in paragraph (a)(2) ofthis section. A third party representative may also submit discontinued model information on behalfofan authorizing manufacturer or private labeler. 

### (t) Amendment ofinfoffilation. [fany compliance certification information on a statement or report previously submitted to DOE has changed, the manufacturer, private labeler or his representative must submit the revised information, by certified mail, either to the authorized trade association or to DOE at: Department ofEnergy, Office ofEnergy Efficiency and Renewable Energy, Office ofCodes and Standards, Forrestal Building, 1000 Independence Avenue, SW, Washington, DC 20585-0121. (g) Voluntary Independent certification Program. A DOE-approved program which meets the follovving criteria: (1) Energy efficiency performance metrics must bebased on measurements. (2) Testing must be conducted at an independent laboratory, or under the supervision of independent personnel, in accordance with the prescribed DOE test procedures. (3) Periodic verification testing must be conducted on listed equipment, such that the perfonnance ofeach basic model is checked at least every five years. (4) Equipment which fails verification testing must either be removed from production and sale,
or be delisted. (5) Units selected for verification testing must be selected randomly from manufacturer's stock. (6) The procedures for the operation ofthe certification program must be published in written fOIm. Voluntary independent certification programs can seek DOE approval by submitting to DOE, in writing, infOImation substantiating their conformance to the above criteria.



### §431.70 Enforcement. (a) Performance standard

- (1) Test notice. Upon receiving information in writing concerning the energy perfomlance ofa particular covered equipment sold by a paIticular manufacturer or plivate labeler which indicates that the covered equipment may not be in compliance with the applicable eneq,,}, performance standard, according to §431.62, the Secretary may conduct testing ofthat covered equipment under this subpart by means ofa test notice addressed to the manufacturer or private labeler in accordance with the following requirements:

42 FILE Q:lciata\ee-40Iee-43143common'nasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### (2) 

### TestingLaboratoPy. Whenever 

### DOE conducts enforcement testing at a designated laboratory in 

### accordancewith a test notice under this section. the resultingtest data shall constitute oficial test data forthat basic model. Such test data will 

### be used by DOE 

### to make a detemiimtion of compliance ornoncompliance if a sufficientnumber oftests have been conducted to satisfythe requirements of appendix I3 

### ofthis subpart. (3) 

### Sampling. The determinationthat a manufacturer's basic model complies with the applicable energyperformance standard shall be based 031

### the testing conducted in accordancewith the statistical sampling procedures set forth in this appendix atlid the test procedures set forth in 

### Subpart

### B of this part. In the case of a basic model that has less than four units available for testing, all of the availableunits shall be tested, and the conlpliance determinationbased on the results ofthose measurements in a manner otherwise in 

### accordance 

### with appex~dix 

### B of tfi

### s subpart. in the case of a basic model which is veiy large, the manufacturer can petition the Department for an exceptionto the nuinber of units to be tested, 'cvhicl~ if given sufficient justification; the Department 

### can allowthetesting of a single unit for enforcement. (4) 

### Test unit selection.A 

### DOE inspector shall select a batch, a batch sample, and test units from the batch samplein accordancewith the provisions ofthis pardgraph arid the conditions spwified in the test notice. (i) Thebatch may basubdivided by DOE utilizing criteria specified in the test notice, e.g.,date of manufacture, component-supplier, 

### Iocation of manufacturing facility, or other criteria url~ich may differentiate oneunit from anotheruithin a basic model. (ii) A 

### batch sampleofup to 20 

### units wiill then be randomly selected from oiie or more subdivided groups within the batch. The manufacturer shall keep on hand all units in the batch sample until such time as the basic model is determined tobe in compliance or noncompliance. (iii) Individual test units comprisingthe test sample shall be randomly selected from the batch sample. (iv) 

### ,411 random selection shall be achieved by sequentially numbering all ofthe units in a batch sample and then using a table of random numbers to select the units to be tested. (5) 

### Test unit preparation.

### li)Prior to a.nd duringtesting. a test unit selected in accordance with paragraph (a)(4)ofthis section shall not be prepared, modified, or adjusted in any manner unless such preparation, modification,or adjustment is allowed by the applicableDOE test procedure. One test shall be conducted for each test unit in accordancewith the applicabletest procedures prescribed in subpart 

### B. (ii) No quality control,testing or assembly procedures shall be performed on a test nnit, or any parts arid 

### subassemblies thereof, that is not perfoxmed during the production and assembly of all other units included ?n

### the basic model. (iii) 

### A test unit shall be considered defective if suck unit is inoperative or is found 

### to be in noncompliancedue to failure of the unit to operate accordingto the malrtfacturer's design ald operating instructions. Defectiveunits, including those damaged due to shipping or handling, skall be reported immediately to DOE.

### DOE shall authorize testing of an additional unit on a
43 FILE Q:\data\ee4O\ee-43\43comm~~shep\nistrept.wpd October 6,1998 (7:MPM) (2) Testing Laborato'Y. Whenever DOE conducts enforcement testing at a designated laboratory in accordance \vith a test notice under this section, the resulting test data shall constitute offiCial test data for that basic model. Such test data will be used by DOE to make a detem1ination of compliance or noncompliance ifa sufficient number oftests have been conducted to satisfy the requirements ofappendix B ofthis subpart. (3) Sampling. The determination that a manufacturer's basic model complies with the applicable energy performance standard shall be based on the testing conducted in accordance with the statistical sampling procedures set forth in this appendix and the test procedures set forth in Subpart B ofthis part. In the case ofa basic model that has less than four units available for testing, all ofthe available units shall be tested, and the compliance determination based on the results ofthose measurements in a manner otherv.1se in accordance \\tith appendix B ofthis subpart. In the case ofa basic model which is velY large, the manufacturer can petition the Department for an exception to the number ofunits to be tested, which ifgiven sufficient justification, the Department can allow the testing ofa single unit for enforcement. (4) Test unit selection. A DOE inspector shall select a batch, a batch sample, and test units from the batch sample in accordance with the provisions ofthis paragraph and the conditions sp('''Cified in the test notice. (i) The batch may b&.subdivided by DOE utilizing criteria specified in the test notice, e.g., date of manufacture, component-supplier, location ofmanufacturing facility, or other criteria which may differentiate one unit from another\\rithin a basic model. (ii) A batch sample ofup to 20 units will then be randomly selected from one or more subdivided groups within the batch. The manufacturer shall keep on hand an units in the batch sample until such time as the basic model is detennined to be in compliance or noncompliance. (iii) Individual test units comprising the test sample shall be randomly selected from the batch sample. (iv) All random selection shall be achieved by sequentially numbering all ofthe units in a batch sample and then using a table ofrandom numbers to select the units to be tested. (5) Test unit preparation. (i) Prior to an.d during testing, a test llnit selected in accordance with paragraph (a)(4) ofthis section shall not be prepared, modified, or adjusted in any manner unless such preparation, modification, or adjustmentis allowed by the applicable DOE test procedure. One test shall be conducted for each test unit in accordance vv'ith the applicable test procedures prescribed in subpart B. (ii) No quality control, testing or assembly procedures shall be performed on a test unit, or any parts and subassemblies thereof, that is not perf01med during the production and assembly ofal.1 other units included in the basic model. (iii) A test unit shall be considered defective ifsuch unit is inoperative or is found to be in noncompliance due to failure ofthe unit to operate according to the manufacturer's design and operating instructions. Defective units, including those damaged due to shipping or handling, shall be reported immediately to DOE. DOE shall authorize testing ofan additional unit on a
43 FILE Q:\data\ee-40\ee-43\43common\nasserilnistreplnistrept.wpd October 6,1998 (7:04PM)

### case-by -case basis. (6)

### Testing at manufacturer's option. If a manufacturer's basic model is determined tobe in noncompljance with the applicable energy perfonnar~ce star~dard at the ccmclusion of DOE

### testing in accordaricewith the double samplingplan specifiedin appendix

### B ofthis subpart, the manufacturer 

### may requestthat 

### DOE conduct additional ~esting 

### of the 

### model accmdingto procedures set forth in appendix

### B of this subpart.

API'ENDIX 

### C TO SUBPART 

### F OF PART 43B--CO&fklLl[ANeE 

### CElr;TIFI[CATTON

Statement 

### of ComHiance With Ex~ergg 

### Conservation Standards for &'ornmercial Equipment
Equipment: h4anufacturer's Name 

### and Address

This compliance statement and the attached certificationreport (or a certification report Reference No--l. Dated

7--p-..-.- 

### _, filed with the DOE-approved voluntary independent certification program entitied 

## 1 are submitted pursuant to 10 

### CFR part 43 

### 1 

### (Energy Conservation Program for Commercial Equipment) and Part 

### C ofthe Energy Policy and Conservation .4ct (Pub. 

### L. 94-163), 

### and amendments thereto. It 

### is signed by a responsible official ofthe abovenamed company. The basic models listed i~ 

### the attached certification report (or the certjticatioareport filed with a DOE-approved voluntary independentcertification program and referenced above) comply with the 

### applicable energ,, consenlation standard. -4ll 

### testing on which the attached certification report (or the certification report filed with a DOE-approved voluntary independent certification program and referenced above)isbased was conducted in confom~ance cvitfl applicable test requirements prescribed in subpart

### B of 10

### CFR part 43 1. 

### A1 

### information reported in 

### the attached certification report (or the certification report filed w-ith 

### a DOE-approved voluntary independent certificationprogram and referenced above)

### is true, accurate, and con~plete The company 

### is aw7are of the penalties associated with violations of 

### ihe Act and the regrlations thereunder, 

### and is also aware of the provisions contained in 18

### U.S.C.1001. 

### w11ich prohibits knowingly making false statementto the Federal Govenunent.

FILE Q:\da~~4O\ee-43\4~m~\niskep~strept.wpd Octoba6, 2998 (7:04PM) case-by-case basis. (6) Testing at manufacturer's option. Ifa manufacturer's basic model is determined to be in noncompliance with the applicable energy perfomlance standard at the conclusion of DOE testing in accordance with the double sampling plan specitled in appendix B ofthis subpart, the manufacturer may request that DOE conduct additional testing ofthe model according to procedures set forth in appendix B ofthis subpart.



### AP])ENO]X C TO SUBPART F OF PART 431--CUMPLIANCE CERTIFICATION

Statement of**Com~iance** 

### With Energy Conservation Standards for Commercial Equipment

Equipment: Manufacturer's Name and Address

This compliance statement and the attached certification report (or a certification report Reference No

.._"

____________________ Dated

___________ --' filed with the DOE-approved voluntary independent certification program entitled

_______________ ---'
are submitted pursuant to 10 CFR part 431 (Energy Conservation Program for Commercial Equipment) and Part C ofthe Energy Policy and Conservation Act (pub. L. 94-163), and amendments thereto. It is signed by a responsible official ofthe above named company. The basic models listed ig the attached certification report (or the certification report filed with a DOE-approved voluntary independent certification program and referenced above) comply with the applicable enerf,lJ' conservation standard. All testing on which the attached certification report (or the certification report filed v.1th a DOE-approved voluntary independent certification program and referenced above) is based was conducted in confomlance with applicable test requirements prescribed in subpart B of 10 CFR part 431. All information reported in the attached certification report (or the certification report filed with a DOE-approved voluntary independent certification program and referenced above) is true, accurate, and complete. The company is aware ofthe penalties associated with violations ofthe Act and the regulations thereunder, and is also aware ofthe provisions contained in 18 U.S.c. 1001, which prohibits knowingly making false statement to the Federal Government.



### 44 FlLE Q:'datalee-40Iee-43143common\nasserilnistreplnistreptwpd Ootober 6,1998 (7:04PM)

### Title: Firm or Organization: Date:

Name of Person to 

### @ontact for 

### FurtherInfbnnation: Kame: Address: Telephone3rumber: FacsimileNumber:

'Third Party 

### Representative: If any part of this Compliance Certification,including the attached certification report, was prepared by a third party 

### orgailization under the provisions of 943 1.63

### of 10

### CFR 430, 

### provide the followinginformationfbr the company official who authorizeci third party 

### representations: Name: Title: Address: 'Telephone Number.,

. 

### Facsimile Number:

The third party organization oficially acting as representative: Third Party 

### Organization:

---------------s---p-------------------------------------.------------------------- 

### Name: Address: Telephone Number: FacsimileNumber:

SubrnitComplianceCertification in 

### writing or 

### on a cornputerdiskette,by 

### Certified Mail 

### either to

FILE Q:Lfata\ee-40\ee-43\43comon\nasMiW.shepW.strept.wpd Oaoba 6, 1998 (7:04PM) Signature ofCompany Official:

________________________________________________________________________________ Name: Title:



## --------------------------------------------------------- Firm or Organization:

_______________________________________ __ Date:

Name ofPerson to Gontact for Further lnfonnation: Name:



## -------------------------------------------------------- Address:

. ________________________________________________________________________________"

_________________________________________________________________________________________ Telephone Number: Facsimile Number:



## -----------------------------------------

Third Party Representative: If any part ofthis Compliance Certification, including the attached certification report, was prepared by a third party organization under the provisions of §431.62 of 10 CFR 430, provide the following information for the company official who authorized third party representations: Name: Title: Address: Telephone**NumQer:,_~**____________________ _ Facsimile Number:



## -------------------------------------------

The third party organization officially acting as representative: Third Party Organization:

_____________________________________________________________________________________ Name: Address: Telephone Number: Facsimile Number:



## --------------------------------------------

Submit Compliance Certification in writing or on a computer diskette, by Certified Mail either to

45 FILE Q:\data\ee-40Iee-43\43<:ommoolnasserilnisb:eplnistrept.wpd October 6, 1998 (7:04PM)

### the authorized trade association, or 

### DOE at to: Department ofEnergy, Office ofEnergyEficiency and Renewable Energy. Ofice ofCodes and Star~dards, Forrestal Building, 1000 

### Independence .Avenue, 

### SW, Washington, 

### DC' 20585-012 1.



### Certification Report for 

### Basic Models (iittaciunentto Slatenlent of Conipliancz withEnergy Consen.ation Standardsfor Coxitrnercial Equipnieiit)

llate: Signature of Conipmy OK~cial orThirdPmy Representatwe: EquipmentType : .0- Equipment Class:

h5mufkctltrer: PrivateLabeler (iC applicable):

For Kelt' orAmended Models':

ForDiscontinued Models': 

## 'Provide *cific equipmentinformationincluding, for each basic modcl. the mmufactlmr's modcl numbcrs and the infomution required in 543 1.63.

? Provide n~anufacturer's model nuniber

46 FILE Q:~tl\ee40\ee-43\43common\nasseri\nish9p\nimepttwpd Octok6,1998 (7:04PM) the authorized trade association, or DOE at to: Department ofEnergy, Office ofEnergy Efficiency and Renewable Energy, Office ofCodes and Standards, Forrestal Building, 1000 Independence Avenue, SW, Washington, 

### DC 20585-0121.

Certification Report for Basic Models (Attachment to Statement of Compliance with Energy Conservation Standards for COllunercial Equipment)

Date: Signature ofCompany Official orThird Party Representative:

________ _ EqillplnentType:

_________________________ __



# - Equipment Class:

_________________________ _**~1anufacturer:** ___________________________ _ Private Labeler (ifapplicable):

___________________ _

For New or Amended Models l :

ForDiscontinued Modelsz:

1 Provide specific equipment information including, for each basic model, the manufacturer's model numbers and the infonuation reqillred in §431.62.

2 Provide manufacturer's model number.

46 FILE Q:ldata\ee-40\ee-43\43commonlnasseri'cistrep'cistrept.wpd October 6, 1998 (7:04PM)

### APPENDIX 

### B SAMPLING PLAN 

### FOR ENFORCERENT 

### TESTING

APPENDIX B 

### 'I'O SUBPART

### F OF PART 431--SAhXPLING PLAN 

### FOR 

### EN

### FOIXCE~IEN'I' TESTlNG



### Double Sampling Step I.

### The first san~ple size 

### (n,)must be four or more units

Step 2. 

### Compute the mean 

# (x,) ofthe measured energy perfornlrtnce ofthe n, 

### units in 

### the first sampleas folfows:

where 

### (xi) is the measured energy efficiency or energy consumption ofunit 

### I.

Step 3. 

### Compute the 

### standard deviation 

### (s,) of the 

### measured energy perfoxmance 

### ofthe (13,) 

### units in the first sample as follows:

-.c 

### Step4. 

### Compute the standard error ( 

### sg ) 

### ofthe measured energperformanceofthe n,

### units in 

### .*- the 

### first sampleas follows:

47 FILE Q:~~\ee-?O\ee-43\43commm~\nisfrq\nistrepr.~d October6,1998 (7:04PM) APPENDIXB SAMPLINGPLAN FOR ENFORCEl\IENT TESTING

APPENDIX B TO SUBPART F OF PART 431--SAl\lPLING PLAN FOR ENFORCKMENT TESTING

Double Sampling Step 1. The first sample size (0\) must be four or more units.

Step 2. Compute the mean (x 1) ofthe measured energy performance ofthe 01 units in the first sample as follows:

(1)

where (Xi) is the measured energy efficiency or energy consumption ofunit I.

Step 3. Compute the standard deviation (Sl) ofthe measured energy performance ofthe (Ill) units in the first sample as follows:

n l 

# L (Xi 

### - 

# x 1)2 Sl 

## = i=1 (2) 

### n -1

1

Step 4. Compute the standard error ( s- ) ofthe measured enerh'Y performance ofthe 01 units in

. .**~** • XI the first sample as follows:



## =

47 (3)

FILE Q:ldata\ee-40\ee-43\43corrunon\nasserilnistreplnistrept.wpd October 6,1998 (7:04PM)

### Step 5. 

### Compute the upper control limit CUCL,) and lower control limit (ECL,) for the mean of the first sample using the applicable DOE 

### energy performarlce staandard CEPS) asthe desired mean and a probability level of95 percent (two-tailed test) as 

### follrruis:



### LCL, = 

### EPS -



### UCL, = 

### EPS + 

### ts- (5) xl

.O

### where t is 

### a statisticbased on a 95 

### percent two-tailed probability level and a sample size of n,.


### Step G(a). For 

### an Energy Efficiency Standard, compare dle mean of the first sample (=,)with the upper and lower control limits (UCE, 

### and LCL,)to determine one of the following:

(I

j 

### If

### the mean ofthe first sampleis below the lower control.

### limit, 

### then the basic model is in 

### noncompliance and 

### testing is at an end. @o not go on to any of the steps below.)

(2) 

### Ifthe mean of the first sample is equal to or greaterd~an the upper control limit, then the basic model is in compliance and testing is 

### at an end. @o not 

### go on to any 

### ofthe stepsbelovi7.)

(3

### j 

### Ifthe sample meal is eq~nal to or greaterthan the lower control limit but less than theupper controf limit, then no determinationof compliance or noncompliance can be made and a second sample sizeis determind by Step 7fa).

-0- 

### Step 6@). 

### For 

### anEner~ Consumption Standard, comparethe mean ofthe first sample

# G-.,) s+iith 

### the upper and lower control limits (UCL, and 

### LCL,)to deternine one of the following:

(1) 

### Ifthe mean of the first sampleis abovethe upper control limit, then the basic model is in 

### noncompliance and testing is 

### at an end. (Do not go on to 

### any ofthe steps below.)

(2) 

### Ifthe mean ofthe first sample is equal to or less than the Iower control Limit, then the basic model is in compliance and testing is at 

### an end. (Donot go on to any of the stepsbelow.)



### 48 FILE Q:Lktake-40\ee-43\4Xommm~\nistrep\nistreptPtwpd Octoba 6,1998(7:04PM) Step 5. Compute the upper control limit (VCL]) and lower control limit (LCLI ) for the mean of the first sampJe using the applicable DOE energy performance standard (RPS) as the desired mean and a probability level 01'95 percent (two-tailed test) a<:> follows:



## = BPS (4)



## = BPS + (5)



## • where t is a stati stic based on a 95 percent two-tailed probability level and a sample size ofn 1 .
Step 6(a). For an Energy Efficiency Standard, compare the mean ofthe first sample (i[)with the upper and lower control limits (UCLI and LCL1) to determine one ofthe follovving:

(1) Ifthe mean ofthe first sample is below the lower control limit, then the basic model is in noncompliance and testing is at an end. (Do not go on to any ofthe steps below.)

(2) Ifthe mean ofthe first sample is equal to or greater than the upper control limit, then the basic model is in compliance and testing is at an end. (Do not go on to any ofthe steps below.)

(3) Ifthe sample mean is equal to or greater than the lower control limit but less than the upper control limit, then no determination ofcompliance or noncompliance can be made and a second sample size is detennined by Step 7(a).

Step 6(b). For an Energy Consumption Standard, compare the mean ofthe first sample 

### (x']) v,rith the upper and lower control limits (UCLI and LCLj ) to determine one ofthe following:

(1) Ifthe mean ofthe first sample is above the upper control limit, then the basic model is in noncompliance and testing is at an end. (Do not go on to any ofthe steps below.)

(2) Ifthe mean ofthe first sample is equal to or less than the lower control limit, then the basic model is in compliance and testing is at an end. (Do not go on to any ofthe steps below.)

48 FILE Q:\data\ee-40Iee-43143eommonlnasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### (3) 

### Ifthe samplemean is 

### equal to or less than the upper control limit but greater than the Iower control limit, then no determination of compliance or rloncornpliarlce can be made and a second sample sizeis determined by Step 7@).

0 

### Step 7(a). For an Energy Efficiency Standard, deternine the second sample size (m,) 

### as follows:

where s, and t have the values used in 

### Steps4 

### and 5,

### respectively The lem "0.05

### EPS" 

### is the difference between the applicable energy efficiency standard and 95 

### percent ofthe standard, where 95 percent ofthe standard is taken as the tower control limit. This procedure yields a suff~cient combined sanlple size (n1+n2) to give an estimated 97.5percent probability of obtaining a detem~ination of cornpIiance when the true mean efficiency is equal to the applicable standard. Given the solution value of n,, 

### determineone of the following.

(I) 

### If the value of n, is less than or equal to zero and if

### the mean energy ef'ficiency ofthe first sample 

## 6,) iseither,equal to or greater than the lower control Iimit 

### (LCL,) or equal to or greater than 95 

### percent ofthe applicableenergy efficiency standard (EES), whichever is 

### greaLer, i.e., 

### if n, (

### 0 and

# x, 2 max 

### (I,CX,,. 0.95 

### EES), 

### the basic model is in 

### con~pliance and testingis at an end

(2)

### If the value 

### of n, is less than or equal to zero and the inem energy efficiency ofthe first sample 

### (F3) is less than the lower control limit (LCL,) 

### or less than 95 percent of the applicable enerm efficiency standard (EES), whichever is greater, i.e.,if n2 

### 5 O 

### and

# x, <max (ZCL,, 0.95IEES), the basic model is in noncompliance and testing is at an end.

(3) 

### Ifthe value of n, is greaterthan zero,then value ofthe second sample sizeis 

### determined tobe the smallestinteger equal to or greaterthan the solution value of n, 

### for equation (6a).Ifthe value of n, so calculated is greater than 20-n,, set n, equal to 20-n, .


### Step 7@). 

### For an Energy Consumptio~l Standard,determine the second sample size (n,) as follows:

FILE Q:~ta\ee-40\ee-43\43comm\nasSenLustrep\nistreptt~ October 6, 1998 (7:04PM) (3) Ifthe sample mean is equal to or less than the upper control limit but greater than the lower contTollimit, then no detelmination ofcompliance or noncompliance can be made and a second sample size is determined by Step 7(b).



## , Step 7(a). For an Energy Efficiency Standard, determine the second sample size (n2) as follows:



## = (6a)

where Sl and t have the values used in Steps 4 and 5, respectively. The term "0.05 EPS" is the difference between the applicable energy efficiency standard and 95 percent ofthe standard, where 95 percent ofthe standard is taken as the lower control limit. This procedure yields a sufficient combined sample size (n 1+n2) to give an estimated 97.5 percent probability ofobtaining a determination ofcompliance when the true mean efficiency is equal to the applicable standard. Ci1ven the solution value ofn2, detelmine one ofthe following:

(1) Ifthe value ofn2 is less than or equal to zero and ifthe mean energy efficiency ofthe first sample (x 1) is either,equal to or greater than the lower control limit (LCL]) or equal to or greater than 95 percent ofthe applicable energy efficiency standard (EES), whichever is greater, i.e., if 

# "2.s 0 and x 1**~** max (LCL 1 , 0.95 EES), the basic model is in compliance and testing is at an end.

(2) Ifthe value ofn2 is less than or equal to zero and the mean energy efficiency ofthe first sample (x l)is less than the lower control limit (LCL1) or less than 95 percent ofthe applicable energy efficiency standard (EES), whichever is greater, i.e., ifn2 ::: 0 and Xl 

### < max (LCL 1, 0.95 EES), the basic model is in noncompliance and testing is at an end.

(3) Ifthe value ofn2 is greater than zero, then value ofthe second sample size is determined to be the smallest integer equal to or greater than the solution value ofn2 for equation (6a). Ifthe value ofn2 so calculated is greater than 20-n1> set n2 equal to 20-n 1 .
Step 7(b). For an Energy Consumption Standard, determine the second sample size (n2) as follows:



### 49 FILE Q:'<lata\ee-40\ee.43\43common\nasseri\nistrep\nistrept.wpd October 6, 1998 (7:04PM)

### where s, and t have the valuesused in Steps4 

### and 5,

### respectively. Thetern1 "0.05EPS" is 

### the difference between the applicableenergy consumption standard and 

### f 05 

### percent of

### the standard, where 105percent ofthe standard is taken as zhe upper control Iimiz. This procedure yields a su+Xcjent combined sample size (n, 

### + n2)

### to give an estimated 97.5

### percent probability of obtaining a determination of compliancewhen the true mean consurnpti~i~ s equai to the applicable standard. Given the solution value of n,, 

### determine one of the following

(I)

### Ifthe vdue of n, is less than or equal to zero and if the mean energy consumption ofthe first sample 

## (i,) is either equal to or less than the upper control limit JUCL,) or equal to or less than 105

### percent ofthe applicable energy performance standard (IEPS), whichever is less, i.e.,if 

### n, 

### 5 O 

### and

# x, s min 

### /UCI,,, 1.05 

### EPS), 

### the basic model isin compliance and 

### testingis 

### at an end.
8 

### (2) 

### Ifthe value ofn?is 

### less than or eclual to zero and the mean energy consr1niption ofthe 

### first sample 

# (F,) is greater than 

### the upper control Iirnit (UCL,) or.more than 105percent of the applicableenergy performance standard (EPS). whichever is less, i 

### e., if@, 

### 5 0 

### and

## TI>mi11 (LCL,, 1.05

### EPS), the basic model is in noncompliance and testing is 

### at an end

(3) 

### Ifthe value of n, 

### is greater than zero, then the value ofthe second sample size is determined tobe the smallestinteger equal to or greater than the solution value of'a, for 

### equation (6b). 

### If zhe value ofn, so calculated is greater than 20-n,, 

### set n2equal to 20-11,.


### Step 8. 

### Computethe combined mean (x-~) 

### ofthe measured energy perfomlance ofthe 

### n, and n, 

### units of the combined first 

### and second samples as follows:

Step 9. 

### Compute the standard error ( 

### sg ) 

### ofthe measured energy perfor~nanca 

### of the n, 

### and 

### n2 units in the combined first and second samples as follo-uis:

50 FILE Q:idahk4O\ee-43\43comm~asserihshep~ept.wpd OaOtex 6,1998 (7:04PM) 

## = (6b)

where S1 and t have the values used in Steps 4 and 5, respectively. The term HO.05 EPS" is the difference between the applicable energy consumption standard and 1 05 percent ofthe standard, where 105 percent ofthe standard is taken as the upper control limit. This procedure yields a sufJicient combined sample size 

# (° 1 

### + 

# °2) to give an estimated 97.5 percent probability of obtaining a determination ofcompliance when the true mean consumption is equal to the applicable standard. Given the solution value of

# ° 2, determine one ofthe following:

(1) Ifthe value ofn2 is less than or equal to zero and ifthe mean energy consumption ofthe first sample (x 1) is either equal to or less than the upper control limit (UCLI) or equal to or less than 105 percent ofthe applicable energy performance standard (EPS), whichever is less, i.e., ifn2 ::: 0 and 

### Xl**~** min (DCLl> 1.05 EPS), the basic model is in compliance and testing is at an end.**~** (2) Ifthe value ofn2 is less than or equal to zero and the mean energy consumption ofthe first sample (x I) is greater than the upper control limit (UCLI) or more than 105 percent ofthe applicable energy perfom1ance standard (EPS), whichever is less, i.e., if 1)2**~** 0 and Xl> min (LCL1 , 1.05 EPS), the basic model is in noncompliance and testing is at an end.

(3) Ifthe value of"2 is greater than zero, then the value ofthe second sample size is determined to be the smallest integer equal to or greater than the solution value ofn2 for equation (6b). lfthe value ofn2 so calculated is greater than 20-n b set n2equaJ to 20-° 1 >
Step 8. Compute the combined mean 

### (i.-2) ofthe measured energy performance ofthe n J and 8 2 units ofthe combined first and second samples as follows:



### (7)

Step 9. Compute the standard error ( SX2 ) ofthe measured enerf,'Y performance ofthe III and n2 units in the combined first and second samples as follows:

50 FILE Q:lclata\ee-40Iee-43143commonlnasseri\nistreplnisttept.wpd October 6, 1998 (7:04PM)

### 'R'ote: s, 

### is the value obtair~ed in Step 3.


### Step IO(a). For an Egergy Efficiency Standard; computethe lower control limit (LCL,) for the mean of the combined first and second samplesusing the DOE energy efficiencystandard 

### (EES) asthe desired mean and a one-tailed probability level of 97.5 percent (equivalentto the hvo-tailed probability level of 95 

### percentused in Step 5) as follows:



### LCL, = 

### EES - 

### ts- (9a) '-3


### where the t-stati stichas the value obtained in Step 5


### Step 10Cb). For an Energy Consumption Standard; cornpute the upper control limit (UCL,) 

### for the mean of the combined first and second samples using the 

### DOE energy performance 

### standard 

### (EPS)as the desired mean and 

### a one-tailed probability level of 102.5percent (equivalentto the two-tailed probability level of 95 

### percent used in Step 5) 

### as 

### folo\vs:



### UCL, = 

### EPS +
6. 

### where thet-statistic has the value obtained in Step 5.



### Step 

### Il(a). For 

### ail Energy Efficiencji Standard, comparethe combined sample mean 

### (x,) to the lower control limit (LCL,) 

### to find one ofthe following:

(I)If the 

### mean ofthe combined sample 

# (s,) is less than the lower co~>trol limit (LCL,) or 95 

### percent ofthe applicable enerby efficiency standard 

### (EES),whicheveris greater, i 

### e., if - 

### x <

### max &CL,, 0.95 

### EES), the basic. model isin nonconlpfiance and testing is at an end.

(2)

### Ifthe mean 

### of the conibined sample

# (6) is equal to or greaterthan the lower control limit



### 51 FILE Q:\data\ee-40ke-43\4kommon~\nishep\niStrept.wpd October6,1998 (7:04PW s- Xz

Note: Sl is the value obtained in Step 3. 

## = (8)

Step 10(a). For an E\lergy Efficiency Standard, compute the lower control limit (LCL2) for the mean ofthe combined first and second samples using the DOE energy efficiency standard (BES) as the desired mean and a one-tailed probability level of97.5 percent (equivalent to the two-tailed probability level of95 percent used in Step 5) as follows:



## = EES 

### ts- Xz (9a)

where the t-statistic has the value obtained in Step 5.

Step 10(b). For an Energy Consumption Standard, compute the upper control limit (UCL2) for the mean ofthe combined first and second samples using the DOE energy pelionnance standard (EPS) as the desired mean and a one-tailed probability level of 102.5 percent (equivalent to the two-tailed probability level of95 percent used in Step 5) as follows:



## = EPS + 

### ts- Xz 

### (9b)

where the t-statistic has the value obtained in Step 5.

Step 11(a). For an Energy Efficiency Standard, compare the combined sample mean 

### (i"z) to the lower control limit (LCLz ) to find one ofthe follO\ving:

(1) Ifthe mean ofthe combined sample (x2) is less than the lower control limit (LCL2 ) or 95 percent ofthe applicable enerf,l)' efficiency standard (EES), whichever is greater, i.e., if
X 2 

### < max (LCLz , 0.95 EES), the basic model is in noncompliance and testing is at an end.

(2) Ifthe mean ofthe combined sample (x2) is equal to or greater than the lower control limit

51 fILE Q:'data\ee-40lee-43143commonlnasseri'nistrep'nistrept.wpd October 6, J998 (7:04PM)

### (LCL,) or 95 

### percent of the applicable energy efficiency standard (EES), whichever 

### is greater: i.e., ifg2 

### 2 max (LCL?,0.95 

### EES), the basic model is in compliance and testing is at an end.
Step 1

### l(h). 

### For an Energy Consumption Standard, comparethe combined sainplemean 

# (K) to the upper control Iinlit (UCL,) to find one ofthe followi~~g:

(I) 

### Ifthe mean of the combined sample 

# {x,) is greaterthan the upper-control limit (UCI,,) 

### or 105

### percent of' the applicableenergy performance standard (EPS), wl.~jchever is 

### less, i 

### e.,if8, > 

### min 

### (Kt,, 1.05

### E13S),the basic model is in noncompliai~ce and testing Is at an end.

(2) 

### If

### the 

### mean ofthe combined sample

## (y2) is equal to or less than .the upper control limit 

### (UCL,) or 105

### percent ofthe'applicable energy perforn~ance standard (EPS). whichever is 

### less, i.e.

### if

## F2
<

### min (UCI,,. 1 .a5 

### EPS), the basic model is in compliance and testing is at an end. 

### -
Manufacturer-Option Testing



### If a determination of non-compliance is made in Steps 6, 

### 7 

### or 11,

### the manufacturermay request that additional testingbe conducted,in accordance with the following procedures.
Step A. 

### Tlle manufacturer requests that an additional number, m,, 

### of units be tested, with ra5 

### chosen such illat n,+n,+n, does not exceed 20


### Step B. 

### Compute the mean energy performance, standard error, and lower or upper control limit ofthe 

### new combined sample in accordancewith the procedures prescribed in Steps 8, 9. 

### and 10. 

### above.
Step C. 

### Comparethe mean perfo~mance ofthe new combined sampleto the revised lower or upper control limit to determine one of the following:

a.1. 

### For an Energy Eficierlcy Standard, 

### ifthe new combined samplemeall is equal 

### to or greater than the lower control limit or 95 

### percent of the applicableenergy efficiency standard,whichever is greater, the basic model is in complianceand testing is at an end.

FILE Q:~ta\ee-40\ee-43\43comm~~strepinimept.wpd October 6,1998 (7:04PM) (LCL2) or 95 percent ofthe applicable energy efficiency standard (BES), whichever is greater, i.e., ifx2 

### 2: max (LCL2 , 0.95 EES), the basic model is in compliance and testing is at an end.

Step 11(b). For an Energy Consumption Standard, compare the combined sample mean (x 2) to the upper control limit (DCL2) to find one ofthe following:

(1) Ifthe mean ofthe combined sample 

### (x z) is greater than the upper control limit (UCLJ or 105 percent ofthe applicable energy performance standard (BPS), whichever is less, i.e., 

### ifx2 > min (DeLz , 1.05 EPS), the basic model is in noncompliance and testing is at an end.

(2) Ifthe mean ofthe combined sample (x 2) is equal to or less than the upper control limit (UCLz ) or 105 percent ofthe"applicable energy performance standard (EPS), whichever is less, i.e., ifx 2**~** min (DCLz , 1.05 EPS), the basic modeJ is in compliance and testing is at an end.

Manufacturer-Option Testing

Ifa determination ofnon-compliance is made in Steps 6, 7 or 11, the manufacturer may request that additional testing be conducted, in accordance with the fonowing procedures.

Step A. The manufacturer requests that an additional number, 113, ofunits be tested, with Il3 chosen such that n 1+n2+n3 does not exceed 20.

Step B. Compute the mean energy perfOImance, standard error, and lower or upper control1imit ofthe ne\v combined sample in accordance with the procedures prescribed in Steps 8, 9, and 10, above.

Step C. Compare the mean perfOImance ofthe new combined sample to the revised lower or upper control limit to determine one ofthe following:

a.I. For an Energy Efficiency Standard, ifthe new combined sample mean is equal to or greater than the lower control limit or 95 percent ofthe applicableenergy efficiency standard, whichever is greater, the basic model is in compliance and testing is at an end.

52 FILE Q:ldatalee-40Iee-43143connnonlnasseri\nistrep\nistreptwpd October 6. 1998 (7:04PM)

### a.2. For an Energy Consumption Standard,if

### the new combined sample mean isequal to or less than 

### the upper con11-01

### Iirnit or 105 

### percent 

### ofthe applicable energy consumption 

### standard, whichever is 

### less,the basic model is in 

### con~pliance and testingis ar an end.

b. 1 

### For an Energy EfXciency Standard, if 

### the new combined sarnple mean 

### is less than the tower control limit or 95 

### percent of the applicable energy efficiency standat-d.whichever, is geater, and 

### the 

### value of 

### nr+n2+n, is less than 20, 

### the manufacturer inay request that additional units be tested The total of 

### all units tested may not exceed 20. Steps A, B. 

### and C 

### are then repeated.

b.2. 

### For an Eriergy Consuniption Standard. if 

### the new combined sarnple mean is 

### g~eater than the upper control limit or 105

### percent ofthe applicableenerjg constimytion standard, whichever is less, and 

### the value 

### of n,+n,+n, 

### isjess than 20, the man~Ifacturer may request that additionalunits be 

### tested. The total of all 

### unitstested may not exceed 20. 

### StepsA, 

### B, and C 

### are then repeated.
b "



### c. Otherwise,the basic model is determinedtobe in noncompliance.

FILE Q:idataLe-40\ee-43\43comon~inishep\nistiept wpd Oaober 6,1998 (7:04P~Mj a.2. For an Energy Consumption Standard, ifthe new combined sample mean is equal to or less than the upper control limit or 105 percent ofthe applicable energy consumption standard, whichever 

### 1S less, the basic modells in compliance and testing is at an end.

b.l. For an Energy Efllciency Standard, jfthe ne\v combined sample mean is less than the lower control limit or 95 percent ofthe applicable energy efficiency standard, whichever, is greater, and the value ofn 1+n2+n3 is less than 20, the manufacturer may request that additional units be tested. The total ofall units tested may not exceed 20. Steps A, B, and C are then repeated.

b.2. For an Energy Consumption Standard, ifthe new combined sample mean is greater than the upper control limit or 105 percent ofthe applicable enerf,ry consumption standard, whichever is less, and the value ofn 1+n2+n3 is less than 20, the manufacturer may request that additional units be tested. The total ofall units tested may not exceed 20. Steps A, B, and C are then repeated

. 

## •

c. Otherwise, the basic model is detemlined to be in noncompliance.



### 53 FILE Q:'data\ee-40Iee.43143common'nasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### Appendix C Commereiat Water Beater 'Test Procedures

API'EYDIX 

### F TO

### STWART IIB OF 

### PART431 

## - UNIFORM TEST 

### METHOD FOR &IEASTJRI]L'C, THE 1mRMAL

### EFFTCIENCY A&VD 

### STA~XDBE- LOSS OF 

### CO~RCI~~L WATER 

### HEATERS Ahm 

### HOT WATER 

### SUPPLY BOILERS I. Scope: This appendix appliesto the determination ofthernlal efficiency and standby loss of storage water heate$, instantaneous water heaters and hot water s~~pply boilers as defined in this appertdix. 2. Definitions 2.1 Hot water

### supplv boiler 

### means a boiler used to heat water for purposes other than space heating with 

### an input rating of at least 300,000 Btu/h. 

### 2.2 irnstatttmtec~?~.~ water heater.

### means 

### a water heater that has an input rating of at ieast 4000 

### Rtu per hour per gallon of stored water. Such term does not include gas instantaneous water heaters used to heat potable water with an input of 200,000 

### B~LI per hour or less, oil instantaneouswater heaters used to heat potable water with an input of 210,000 

### Bm per hour or less, and electric instantaneous water heaters used to heat potable water with an input 

### of 12kilowatts or less unless such unit is designed to heat water to temperatures of 180°For higher. 2.3 R-value 

### means the thermal resistance ofinsulating material as determined based on ASTM 

### Standard Test Method C 

### 177-85 or C5 

### 18-91. 2.4Sta11dhj7 loss 

### means the ratio of the heat loss per hour to the heat content of the stored water aboveroom temperature,in percent per hour as determined by the fornula for S given in mSI 

### 231.10.3-1993.

0 

### 2.5 

### S'iurage wafer

### heater means a water heater that heats and storeswater within the appliance at a thermostatically controlled temperaturefor delivery on demand. Such term does not include units with an input rating of4000 Btu per flour or more per gallon of stored water. Such tenn also does not include gas storagewater heaters used to heat potal~le ~~ater with 

### an input of 75,Ct00 

### Btu per hour or less, oil storagewater heaters used to heat potable water with an input of 105,000 Bhi per hour or less, and electric storage water heaters used to heat potable wdter with an input of 1

### 2 kilowatts or 

### Iess. 2.6 Tirnksurface area,

### for the purpose of determiningportions of a tank requiring insulation, tank surfacearea means those areas of a storagetank, 

### including access panels and 

### hatches, in 

### its uninsulated or preinsulated state that do not have pipe penetrations or tank supports attached. 2.3 Ekermal <jf?cienc); 

### means the ratio ofthe heat transferred to the water flowing through the water heater to the amount of energy consumed by the water heater as measured duringthe thermal efficiency test procedurepresented in this appendix.

3. 

### Test Procedures

FILE Q:idata\ee-40\ee-43\43comon~ri~sh~~ept..hpd Octoba6,1998 (7:04PM) 

### Appendix C Commercial Water Heater Test Procedures

ApPENDIX F To SUBPART B OF PART 431

- UNIFORM TEST METHOD FOR .MEASURING THE THERMAL EFFICIENCY AND STANDBY 

### Loss OF COMMERCIAL WATER HEATERS Al'i""D HOT WATER SUPPLY BOILERS 1. Scope: This appendix applies to the determination ofthermal efficiency and standby loss of storage water heaters, instantaneous water heaters and hot water supply boilers as defined in this appendix. 2. Definitions 2.1 

### HOi water 

### suppzv boiler means a boiler llsed to heat water for purposes other than space heati.ng with an input rating ofat least 300,000 Btu/h. 2.2 

### Instantalle01.lSwater healer means a water heater that has an input rating ofat least 4000 Btu per hour per gallon ofstored water. Such term does not include gas instantaneous water heaters used to heat potable water with an input of200,000 Btu per hour or less, oil instantaneous water heaters used to heat potable water vv'ith an input of210,000 Btu per hour or less, and electric instantaneous water heaters used to heat potable water with an input of 12 kilowatts or less unless such unit is designed to heat water to temperatures of 180°F or higher. 2.3 R-value means the thermal resistance ofinsulating material as determined based on ASTh1 Standard Test Method C177-85 or CS18-91. 2.4 Standby loss means the ratio ofthe heat loss per hour to the heat content ofthe stored water above room temperature, in percent per hour as determined by the fonnula for S given in ANSI Z21.10.3-1993.



# .. 2.5 Storage 'water heater means a water heater that heats and stores water within the appliance at a thermostatically controlled temperature for delivery on demand. Such term does not include units**v.~th** an input rating of4000 Btu per hour or more per gallon of stored water. Such terrn also does not include gas storage water heaters used to heat potable water with an input of75,000 Btu per hour or less, oil storage water heaters used to heat potable water \vith an input of 105,000 Btu per hour or less, and electric storage water heaters used to heat potable water with an input of 12 kilowatts or less. 2.6 Tank surface area, for the purpose ofdetemlining portions ofa tank requiring insulation, tank surface area means those areas ofa storage tank, including access panels and hatches, in its uninsulated or preinsulated state that do not have pipe penetrations or tank supports attached. 2.7 Thermal efficiency means the ratio ofthe heat transferred to the water flowing through the water heater to the amount ofenergy consumed by the water heater as measured during the thermal efficiency test procedure presented in this appendix.

3. Test Procedures
54 FILE Q:\data\ee-40\ee·43\43<oromon\nasseri\nistrep\nistrept.wpd October 6,1998 (7:04PM)3 J.

### 1 Thermal Eficiency

Measurement equipment specificationsshall be as provided in the Instrumentation subsection of Appendix E to Subpart 

### B of 10

### CFR Part 430. 3.1.2 

### TestSetzsp 3.

### I .2.1

### (7a.r-jieZed later 

### heaters Test setup and ii~strun~entation shall conform to the subsection tided Method of Test 

### of section 2.8 in ANSI 221.10.3-1993. Hot water supply boilers shall be treated as instantaneous water heaters. 3.1.2.2

### OilTfileEed waferheaters Test setup and instrumentationshafi conform to the subsection titled Method of Test of Section 2.8in 

### ANSI 221.

### f0.3-1993, except as noted. Hot water supply boilers shall be treated as instantaneous water heaters. When testing an oil-fueled water heater. 

### a vertical length of flue pipe shall be connectedto the 

### flue gas outlet of sufficientheight to establish the 

### miniinurn draft specifiedin the manufacturer's installation instructions.The burner rate sfiall 

### be adjustedto achieve an hourly Btrl input rate within +:'-

### 2% ofthe manufacturer's specified input rate with 

### the CO,reading 

### as specified by the manufacturer 

### with srnokeno greaterthan 1 

### and fuel pump pressure within 

### +/- of the manufacturer's specifications. 3.1.2.3

### 1Tlectr.i~ water heaters Thethernlal efficiency of electric water heaters 

### with immersed heating dements is assurned 

### to be 98 

### percent. 3

### .1.3

### Tesf ,+lethod Method oftest shall conform to the subsection

### titled Method 

### ofTest of Section 

### 2.5in ANSI 221.10.3-1993. 3.2 Standby 120ss

Measurement equipment specificationsshall be asprovided in the hstmmentation subsection of Appendix 

### E to Subpart

### R of 10 

### CFR Part 

### 430.

3

### 22.1

### GLIS-j~eled water he~rfers Test setup and instrumentationshall conforn~ to subsectiontitled Method of Test of Section 

### 2.9 

### in AXSI 221.10.3-1Q93, 3.2.2.2 

### Oil-fieledw

### ~rfer heaters Test setup and instrumentationshall conform to Section 

### 3.62.2 

### ofthis appendix. 3

### 2.2.3Electric water heaters

FILE Q:\data\ee-lO\ee-43\43commm~\rusuep\ntstreptwpd October6,1998 (7:MPM) 3.1 Thermal Efficiency 3.1.1lv1easurement!jjquipment Measurement equipment specifications shall be as provided in the Instrumentation subsection of Appendix E to Subpart B of 10 CFR Pan 430. 3.1.2 Test Setup 3.1.2.1 Gas-fueledwater heaters Test setup and instrumentation shall conform to the subsection titled Method ofTest of section 2.8 in ANSI Z21.lO.3-1993. Hot water supply boilers shall be treated as instantaneous \vater heaters. 3.1.2.2 Oil-fueledwater heaters Test setup and instrumentation shall conform to the subsection titled Method ofTest ofSection 2.8 in ANSI Z21.10.3-1993, except as noted. Hot water supply boilers shall be treated as instantaneous water heaters. When testing an oil-fueled water heater, a vertical length offlue pipe shall be connected to the flue gas outlet ofsufficient height to establish the minimum draft specified in the manufacturer's installation instructions. The burner rate shall be adjusted to achieve an hourly Btu input rate within +/- 2% ofthe manufacturer's specified input rate with the CO2 reading as specified by the manufacturer with smoke no greater than 1 and fuel pump pressure within +/- 

## 1210 ofthe manufacturer's specifications. 3.1.2.3 Electric water heaters The themlaJ efficiency ofelectric water heaters with immersed heating elementsis assumed to be 98 percent. 3.1.3 Test ,Method Method oftest shall conform to the subsection titled Method ofTest of Section 2.8 in ANSI Z21.10.3-1993. 3.2 Standby Loss 3.2.1 AleasurementEquipment Measurement equipment specifications shall be as provided in the Instrumentation subsection of Appendix E to Subpart B of 10 CFR Part 430. 3.2.2 Test Setup 3.2.2.1 Gas-fueledwater heaters Test setup and instrumentation shall confornl to subsection titled Method ofTest ofSection 2.9 in ANSI Z21.10.3-1\/93. 3.2.2.2 Oil-fUeledwaler heaters Test setup and instrumentation shall conform to Section 3.1.2.2 ofthis appendix. 3.2.2.3 Electric water heaters
55 FILE Q:\data\ee-40Iee.43143<onnnonlnasserilnis1replnistreptwpd October 6,1998 (7:04PM)

### Test setup and instrumentation shall conform to the subsection titled Method of Test 

### of Sectioi~ 2.9 in 

### ,LYSI 221.10.3-1993,except 

### as noted below. When testing 

### an electricwater heater for standby loss. the electrical supply voltage 

### shall be 

### maintained \within -1.;- 1% 

### of the center 

### ofthe voltage range specified 

### on the water heater nameplate. 3.2.3 

### Testrkfethon' Method of testing 

### sl.1~11 ~onfonn to the subsection titled Method o[ 

### Test of Section 2.9

### in ANSl 221.10.3-1993, 

### except 

### as noted. When testing electi-icwater heaters. 

### the vaiue 

### of 

### E, required for calc~~lation 

### ofthe standby loss 

### (S) shall be 98 percent.

FILE Q:Idatn\ee-40\ee-43\4Xomm\ndtnis&ep~m-ept.wpd October 6,1998 (7:04PM) Test setup and instrumentation shall conform to the subsection titled Method ofTest ofSection 2.9 in Al""JSI 221.10.3-1993, except as noted below. When testing an electric water heater for standby loss, the electrical supply voltage shall be maintained v
... ithin +/- 1 % ofthe center ofthe voltage range specified on the water heater nameplate. 3.2.3 TestA1ethod Method oftesting shall Gonform to the subsection titled Method ofTest ofSection 2.9 in ANS] 221.10.3-1993, except as noted. When testing electric water heaters, the value of Et required for calculation ofthe standby loss (S) shall be 98 percent.

56 FILE Q:<latalee-lOlee.43143connnon'nasseri\nistrep\nistrept.wpd October 6,1998 (7:04PM)

### Appendix 

### D tinfired Hot Water Storage 

### Tank 

### Test X~rocedures

.APfEYDIX 

### G TOSUBPARTjB OF 

### PART431 

## - 'LTNTFORM

### TEST RfETHOD FOR DETERMINXNGTHE 

### MAXIMUM

### HEAT 

### LOSS OF

### COMMERCIAL UNFTIRED HOTWATER STOR~GE TA~WS 

### I.

### Scope: This appendix applies to the determillationofthe maximuin heat loss of 

### comrnel-cial unfired hot water storage tanks.

2.1 

### Rrominal tank

### surjfncearea 

### means the area ofthe tank if 

### it isuninsulated or the area of the jacket if it is ajacketed storagetank. 

### This surface area will be determinedby assunlingthat no holes or protrusionsexist in or fiom the main body ofthe tank or jacket. 2.2 

### R-valire means the thermal resistance of insulating material as determined based on 

### ASTM Standard Test Method 

### C 177-85 or C5 

### 18-91. 2.3 

### Tank 

### ~w~:face area, for the purpose ofdeterminingportions of a tank requiring insulation, tank surface area mebsthose areas of a storagetank, it~cluding access panels and hatches, in its uninsulated 

### or preinsulated state that do not have pipe penetrations or tank supports attached during operation. For the purpose of calculating heat loss per square foot of tank surface area, the 

### nominal tank surface area will be used. 2.1 

### UnfireLZZtotwater 

### sforagetank-means a tank used to store water that isheated externally. 3. 

### Test Procedures

'&is method can be used to determine the heat loss per square foot of tank surface area for ullfired hot water storage tanks by performing the standby loss test procedure on an electric storage water heater utilizing 

### an identical tank 

### with identical insulation andjacketing as that of the unfired storagetank 

### rnodel. 3.1.2 

### Test

### Eq?riprem 3.1.3 

### TestMethod Perfom1the standby loss test procedure as provided in Appendix 

### F to Subpart

### B of Part 43 

### 1 0 

### 3.1.4 

### Calculntiu~a Determinethe differencein internal energy of the volume ofwater in the tank at the begilltling and end ofthe test based on the mean tank temperature, QAfi 

### in Btu as follows:

where the terms on the right-hand-side of the equation are the same as those presented in Section


### 57 FILE Q:Llata\ee-40\ee-43\4Xommatind\nishephmept.Wpd October6,1998 (7:04PM) 

### Appendix D Unfired Hot Water Storage Tank Test Procedures

ApPENDIX G To SUBPART B OF PART 431

- UNIFORM TEST .METHOD FOR DETERMINING THE :MAXIMUM HEAT

### Loss OF COMMERCIAL UNFIRED HOT WATER STORAGE TANKS 1. Scope: This appendix applies to the determination ofthe maximum heat loss ofcommercia! unfired hot water storage tanks. 2. Definitions: 2.1 Nominal tank surface area means the area ofthe tank ifit is uninsulated or the area ofthe jacket ifit isajacketed storage tank. This surface area will be determined by assuming that no holes or protrusions exist in or from the main body ofthe tank orjacket 2.2 R-value means the thermal resistance ofinsulating material as detenninedbased on ASTM Standard Test Method C 177-85 or C518-91. 2.3 Tank sUl/ace area, for the purpose ofdetermining portions ofa tank requiring insulation, tank surface**areame~ns** those areas ofa storage tank, including access panels and hatches, in its uninsu1ated or preinsulated state that do not have pipe penetrations or tank supports attached during operation. For the purpose ofcalculating heat loss per square foot oftank surface area, the nominal tank surface area will be used. 2.4**U~fired**hotwater storage lank means a tank used to store water that is heated externally. 3. Test Procedures 3.1 Equivalent Electric /)'torage TankA1ethod 3.1.1 Scope This method can be used to determine the heat loss per square foot oftank surface area for unfired hot water storage tanks by performing the standby loss test procedure on an electric storage water heater utilizing an identical tank with identical insulation andjacketing as that ofthe unfi.red storage tank model. 3.1.2 Test Equipment 3.1.3 TestMethod Perform the standby loss test procedure as provided in Appendix F to Subpart B ofPart 431.

41> 3.1.4 Calculations Determine the difference in internal enerf,'Y ofthe volume ofwater in the tank at the beginning and end ofthe test based on the mean tank temperature, Q#J> in Btu as follows: QdifJ 

# =K·**~** 

### .

### 11**~** where the terms on the right-hand-side ofthe equation are the san1e as those presented in Section

57 FILE Q:ldata\ee-40lee-43\43conunon\nasserilnistreplnislIept.wpd October 6, 1998 (7:04PM)

### 2.9 

### of 

### ,ANSI 221.10.3-1993. Determinethe rate ofheat loss per square foot oftank surface area, 

### Q,,,, in Btu/h.fiz

### as follours:

where
- o 

### 1 

### elecb-icalenergy cor~sumption as presented in Section 2.9 of ANSI 

### 221. I 0.3-1

### 993. 

### A, = 

### nominal surfacearea ofthe tank, ft2 

### (m", qt = C)SO/'o,

### the assumed recovery efficiency for electric water heaters with immersed heating elements,
t = 

### duration of standby loss test as defined in Section 2.9 

### ofANSI 221.10.3-1993.

This method can be used to determine the heat loss per square foot oftank surface area. This is 

### an alternate method to be used if the Equivalent Electric Storase Tank &fethodis 

### not applicable.
Measurement equipment specifications shall be as prosided in the Instrumentation subsectionof Appendix 

### E to Subpart£3 

### of 10

### CFR Part 430. Measurement equipment shall be installed to measure electrical power and enerE cons~imption; internal tank storageotemperature. ambienttemperature and storagevolrln~e ofthe unfired storage tank as indicated in Appendix E 

### to Subpart I3 

### of 10 

### CFR Part 430.

Connecta u7ater heaterjs) of a type recommended by the storage

### tank n~anufacturer, with a 

### known thermal et'ficiencyrating and storage

### tank capacity as determined

### by Appendix 

### F to Subpart B 

### of CFR 

### 43 1,

### to the storage tank accordingto the manufacturers instructions provide a recirculation loop between the water heater and storage tank and a pump to provide circulation. The circulationloopbetween the water heater and storage tank shall be of

### minimum len,&. Insulate all piping connected to the storagetank with a material hating a rhennal resistance (R

### value) of not less than 4 

### "F.ft2.hr/lBtu(0.7 

### ~.m%%'). AMaintain ambient air temperature accordingto ANSI 

### 22 I.

### 10.3-1993 Section 2.8.i 

### 3.2.4

### lest :Vfcthod

FILE Q:\data\ee-40\ee-43\43comm~SeriLuskep\nistrept.wpd October 6,1998 (7:04PM) 2.9 ofANSI Z21.10.3-1993. Determine the rate ofheat loss per square foot oftank surface area, Qlosp in Btu/h·fe as follows:

where**l~'c** 

### As T'lt =

= electIical energy consumption as presented in Section 2.9 of ANSI Z21.lO.3-1993, nominal surface area ofthe tank, ft2 (m2), 98%, the assumed recovery efficiency for electric water heaters with immersed heating elements, duration ofstandby loss test as defined in Section 2.9 ofANSI Z21.10.3-1993. 3.2**Exlernal~y** Heated WClter !viethod t =

3.2.1 Scope This method can be used to determine the heat loss per square foot oftank surface area. This is an alternate method to be used ifthe Equivalent Electric Storage Tank :Method is not applicable. 3.2.2. AleasurementEquipment Measurement equipment specifications shall be as provided in the Instrumentation subsection of Appendix E to Subpart B of 10 CFR Part 430. Measurement equipment shall be installed to measure electrical power and enerbTJ' consumption, internal**tankstorag~temperature,** ambient temperature and storage volume ofthe unfired storage tank as indicated in Appendix E to Subpart B of 10 CFR Part 430. 3.2.3 Test Setup Connect a water heater(s) ofa type recommended by the storage tank manufacturer, with a known thermal efficiency rating and storage tank capacity as detennined by Appendix F to Subpart B ofCFR 431, to the storage tank according to the manufacturers instructions provide a recirculation loop between the water heater and storage tank and a pump to provide circulation. The circulation loop between the water heater and storage tank shall be ofminimum length. Insulate all piping connected to the storage tank with a material having a thermal resistance (Rvalue) ofnot less than 4 cF'fe-hr/Btu (0.7 K-m2 /\V). Maintain ambient air temperature according to ANSI Z21.10.3-1993 Section 2.8.i. 3.2.4 TestAlethod

58 FILE Q:\data\ee-40\ee-43\43commonlnasseri'nistrep'nistrept.wpd October 6, 1998 (7:04PM)

### Deternline capacity ofunfired storagetank accordingto Section 2.30 

### of

### ANSI 221.10.3-1993. 

### Establish a maximum mean unfired storagetank tenlperature of 160

### = 5

### "F * 

### Record ebect-c and he1measurementinstmment readings, tank temperatures and time. * 

### Do not add heat to the unfired storagetank for the next 48 

### hours. After the 48 

### hour standby period has elapsed:

--- 

### Record the electricand &el measurement readings

- 

### Record the tank temperatures and time

- 

### Activatethe water heater * 

### Recovery

## - Establish a mean tank temperature 

### of 160 :l: 

### 55"F while circulating water between the water heater and the urlfired storage tank

- 

### Record the electric and fuel measureinentreadings



### - Record tank temperaturesand time

Data required:
-0- 

### t'T,-@,, Volume of fuel consumed during recovery period 

## (JF Correction factor for fuel 

### H Heating value of

### fuel
* 

### T,.,, Mean tank temperature at beginning ofthe standby 

### perid * Tkqf 

### Mean tank temperature at the end of

### the recovery period * 

### qL Thermal etrjciency ofthe hot water heater

ts 

### Standby lossperiod in hours 

### V Storage capacity of unfired storagetank 

### QPp, Heat loss rate ofwater from recirculation loop (optional 

## - calcrrlated based on water temperaturein pipe, pipe diinensions, and insrilation) Calculate the amount of energy requiredto heat the water during the recovery period, Q, as follo~~s: For gas,

FILE Q:\data\ee-4O\ee-43\43common~\ilistiep~ept.~ Octoba 6,1998 (7:04PM) • Detemline capacity ofuntlred storage tank according to Section 2.30 ofANSI Z21.10.3-1993.

• Establish a maximum mean unfired storage tank temperature of 160 ± 5

### oF.

• Record electIjc and fuel measurement instrument readings, tank temperatures and time.

• Do not add heat to the unfired storage tank for the next 48 hours.

• After the 48 hour standby period has elapsed:

... Record the electric and fuel measurement readings

- Record the tank temperatures and time Activate the water heater

• Recovery

- Establish a mean tank temperature of 160 :r: 50 F while circulating water between the water heater and the unfired storage tank Record the electric and fuel measurement readings Record tank temperatures and time

3.2.5 Calculations Data required:

•
•


### •
•
•


### •
•


### •
• 

## •**}~.fod** Volume offuel consumed during recovery period 

### CF Correction factor for fuel H 

### TS

..11li T R_mf 'Il!
Is**v~** Qpipe Heating value offuel Mean tank temperature at beginning ofthe standby period Mean tank temperature at the end ofthe recovery period Thermal efficiency ofthe hot water heater Standby loss period in hours Storage capacity ofunfired storage tank Heat loss rate ofwater from recirculation loop (optional

- calculated based on water temperature in pipe, pipe dimensions, and insulation) Calculate the amount ofenergy required to heat the water during the recovery period, 

### QR as follows: For gas,

59 FILE Q:\data\ee-40\ee.43\43comroon'nasserilnistrep\nistrept.wpd October 6, 1998 (7:04PM)

### Determinethe 

### difference in internal energy ofthe ~~olume of 

### water in the 

### unfired storage tank at 

### the beginningof the test standby toss period aid at the end of 

### the recovery period based on the 

### mean tank 

### temperature, 

### Qd@ in 

### Btu as follows:

Calculate the rate ofheat loss per square foot oftank surface area during the test standby loss period, 

### q,,,, based on the mount 

### of 

### heat required to reheat the water during the recovery period.

FILE Q:idata~-40\ee-43\43comon~~strep~strept.wpd October 6,1998 (7:04PM) QR 

# =VRJuel' 

### CF· H

Detemline the difference in internal energy ofthe volume ofwater in the unfired storage tank at the beginning ofthe test standby loss period and at the end ofthe recovery period based on the mean tank temperature, Qdi/f in Btu as foHows:

Calculate the rate ofheat loss per square foot oftank surface area during the test standby loss period, qloss' based on the amount ofheat required to reheat the water during the recovery period.

q/oss 

# =

60 FILE Q:ldata\ee.40Iee·43143commonlnasseri'nistrep'nistrept.wpd October 6, 1998 (7:04PM)

### Appendix 

### E Comnlercid "13ackaged" Boilers Test 

### lDrocedures

0 

### APPENDIX 

### E TO 

### SUBPART 

### B OF

### PART 4.31--UWFORMI 

### TEST 8IETFxODFOR 

### MEAS~I:;RING Tm 

### EAwxy 

### EFFICIENCY OF 

### PACKAGED 

### CO~RCUL HEATING BOILERS

1.0 

### Scope 1 1 

### This Appendix coversthe test procedures used to measure the steady state combustion efficiency of gas-fired or oil-fired, packaged commercial heating boilers having a rated capacity of 300,000 

### Bna per hour or more. 1.2 Packagedboiler covered by 

### this Appendix is defined as "a 

### boiler that is shipped complete with heating equipment, mechanical draft eyuiprnent, and 

### aittomatic contrds; usually shipped in 

### one or more sections". 1.2.1 Packaged low-pressure steam and hot waterboilers shall conform to the requirements of the current edition ofthe ASME Boiler and Pressure Vessel Code, Section IV, 

### Heating Boilers. 1



### 2.2 

### Packaged high-pressure steam and high temperature water boilers shall conform to 

### the requirements of the ASME Boiler and Pressure Vessel Code, Section 

### L. Power Boilers. 2.0 Definitions 0 

### 2.1 Definitions includethe definitions specified in 

### section 3.0

### of the B-Tydronicsinstitute Testing and Rating Standard for Heating Boilers, sixth edition, June 1989, and the tbllox7ing additional definitions for condensing boilers: 2.1.1 Condensing Boiler 

### - a boiler which will, duringthe laboratory test, condensepart of 

### the water vapor in the flue gases and which is equipped 

### with a means of collecting and draining this condensate. 2.1.2 

### Flue Condensate 

### - liquid formed by 

### the condensation ofmoisture in the flue gases. 3.0Test Procedures 3.1 Test Procedure for Packaged Low-Pressure Steam and Hot Water Boilers 3.1.1 Cfassificatio~ls: 'T'he classificatioi~ ofboilers shal

### I be as specified

### in sectioi~ 4.0 

### ofthe 1989 

### Hydronics Institute Testing and Heating Standardfor Heating Boilers 3.1.2 Requirements: The requirements forthe combustion efficieilcy test shall be conducted as

' 

### specifiedinsections5.1.2,5.2,5.4.1,5.4.3,5.4.4,5.4.5,and5.4.6ofthe19S9Hydronics institute Testing and Heating Standard for Heating Boilers. 3.1.3 Instnln~ents apd Apparatus:The requirements for instruments and apparatus shall.be 

### as specified in sections 6 

### and 7 

### of the 1989 

### Hydronics Institute Testing and Heating Standard for Heating Boilers.

61 FILE Q:Llata\ee-40\ee-43\43common~k~trep~mept.wpd October6, 1998 (7:04PM) AppeudixE Commercial "I'ackaged" Boilers Test ]>rocedures

ApPEl'o'DIX 

### E TO SUBPART 

### B OF PART 431--UNIFORM TEST lVIETHOD FOR MEASURING THE ENERGY EFFICIENCY OFPACK.,.'\.GED COMMERCIAL HEATING BOILERS

1.0 Scope 1.1 This Appendix covers the test procedures used to measure the steady state combustion efficiency ofgas-fired or oil-fired, packaged commercial heating boilers having a rated capacity of 300,000 Btu per hour or more. 1.2 Packaged boiler covered by this Appendix is defined as "a boiler that is shipped complete with heating equipment, mechanical draft equipment, and automatic controls; usually shipped in one or more sections". 1.2.1 Packaged low-pressure steam and hot water boilers shall conform to the requirements of the current edition ofthe AS:ME Boiler and Pressure Vessel Code, Section IV, Heating Boilers. 1.2.2 Packaged high-pressure steam and high temperature water boilers shall conform to the requirements ofthe ASME Boiler and Pressure Vessel Code, Section 1, Pmver Boilers. 2.0 Definitions 2.1 Definitions include the definitions specified in section 3.0 ofthe Hydronics Institute Testing and Rating Standard for Heating Boilers, sixth edition, June 1989, and the following additional definitions for condensing boilers: 2.1.1 Condensing B.oiler - a boiler which will, during the laboratory test, condense part ofthe water vapor in the flue gases and which is equipped with a means ofcollecting and draining this condensate. 2.1.2 Flue Condensate

- liquid formed by the condensation ofmoisture in the flue gases. 3.0 Test Procedures 3.1 Test Procedure for Packaged Low-Pressure Steam and Hot Water Boilers. 3.1.1 Classit1cations: The classification ofboilers shall be as specified in section 4.0 ofthe 1989 Hydronics Institute Testing and Heating Standard for Heating Boilers 3.1.2 Requirements: The requirements for the combustion efficiency test shall be conducte.d as specified in sections 5.1.2, 5.2, 5.4.1, 5.4.3, 5.4.4, 5.4.5, and 5.4.6 ofthe 1989 Hydronics Institute Testing and Heating Standard for Heating Boilers. 3.1.3 Instmments alld Apparatus: The requirements for instruments and apparatus shall be as specified in sections 6 and 7 ofthe 1989 Hydronics Institute Testing and Heating Standard for Heating Boilers.

61 FILE Q:ldatalee-40Iee-43143comrnonlnasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)

### 3.I .4 

### Test Conditions:Tlie test conditions shalt be 

### as specifiedin section 8.0ofthe 1989 HydronicsZnstimte Testing and Heating Standard for Heating Boilers with the exception of subsection 8.5.1(ofthe E-XI standard)which isrep1aced with the follo.rvingparagraph: 3.1.4.1 Water Temperatures

## - for water-test, the boiler inlet temperature shall be at 80Fi1OF and the boiler outlet tenlperature shall be at 180Fk2F. 3.1.5 Test Procedure: 3.1.5.1 Thetest procedure for the combustion efficiency test ~11311 

### be as specified in sections 9.2 and 10.2ofthe 1989Hydronics 

### institute Testing and Heating Standard for Heating Boilers. 3.1.5.2 Optional Procedurefor the Measuremenl of Condensate for a Condensing Boiler. The test procedure for the nleasureinent of the condensatefrom the flue gas under steady state operation shalt be conducted as specified in section 9.2 

### of 

### ASEIRAE standard 103-1993 under the rated input conditions. This condensatemeasurement;if selectedto be conducted, shall be for an additional 30 minutes of steady state operation after the completion of tbe steady state combustion efficiency test specified in sec. 2.6.1 ofthis appendix.

9 

### 3.1.5.3 Steam and Water Boilers. A steam and water boiler shall be tested as steam boiler. Optionally,the xiater version of a steam and waterboiler may be tested as a water boiler. 3.1.6 Calculatioi~ of Results: 3.1.6.1 Combustion Efficiency. The calculationj;rocedure for the combustion efficiency test shall be as specified in section 11.2ofthe 1989 Hydronics Institute Testing and Heating Standard for Heating Boilers. 3.1.6.2 Procedure for the Calculation ofthe z4dditionalHeat Gain and Heat loss, and Adjustment to the Con~bustion Efficiency for a Condensing Boiler 3.1.6 2.1 Ifthe optional procedure for the measurement of flue condensate of sec 3.62 ofthis Appendix 

### is selected,the calculation of the latent heat gain from the condensation 

### ofthe water vapor in the tlue gas and heat loss of due to the flue condensate down the drain shall be as specified in section 11.37.1 and 11.3.7.2ofAS- Standard 103-1993. 3.1.6.2.2 Adjustment to the Combustion Efficiency for CondensingBoiler. The combustion efficiency as calculated in section 3.7.1 ofthis Appendix shall be adjusted by adding the fatent gain from the condensationof the water vapor in the flue gas and subtracting the heat loss (due to the flue condensatedown the drain) to obtain the combustion efxciency of a cor~derlsir~g boiler

0

FILE Q:Lkta\ee-10\ee-43\4komm~\nistrepkstrept.~ Dctobe~ 6,1998 (704PM) 3.1.4 Test Conditions: The test conditions shall be as specified in section 8.0 ofthe 1989 Hydronics Institute Testing and Heating Standard for Heating Boilers \vith the exception of subsection 8.5.1 (ofthe Hl standard) which is replaced with the following paragraph: 3.1.4.1 Water Temperatures

- for water test, the boiler inlet temperature shall be at 80F :1: 1 OF and the boiler outlet temperature shall be at 180F±2F. 3.1.5 Test Procedure: 3.1.5.1 The test procedure for the combustion efficiency test shall be as specified in sections 9.2 and 10.2 ofthe 1989 Hydronics Institute Testing and Heating Standard for Heating Boilers. 3.1.5.2 Optional Procedure for the Measurement ofCondensate for a Condensing Boiler. The test procedure for the measurement ofthe condensate from the flue gas under steady state operation shall be conducted as specified in section 9.2 ofASHRAE standard 103-1993 under the rated input conditions. This condensate measurement, ifselected to be conducted, shaH be for an additional 30 minutes ofsteady state operation after the completion ofthe steady state combustion efficiency test specified in sec. 2.6.1 ofth1s appendix

.



# .. 3.1.5.3 Stearn and Water Boilers. A steam and water boiler shall be tested as steam boiler. Optionally, the water version ofa stearn and ,vaterboiler may be tested as a water boiler. 3.1.6 Calculation ofResults: 3.1.6.1 Combustion Efficiency. The calculation procedure for the combustion efficiency test shall be as specified in section 11.2 ofthe 1989 Hydronics Institute Testing and Heating Standard for Heating Boilers. 3.1.6.2 Procedure for the Calculation ofthe Additional Heat Gain and Heat loss, and Adjustment to the Combustion Efficiency for a Condensing Boiler 3.1.6.2.1 Ifthe optional procedure for the measurement offlue condensate ofsec. 2.6.2 ofthis Appendix is selected, the calculation ofthe latent heat gain from the condensation ofthe water vapor in the nue gas and heat loss ofdue to the flue condensate down the drain shall be as specified in section 11.3.7.1 and 11.3.7.2 ofASHRAE Standard 103-1993. 3.1.6.22 Adjustment to the Combustion Efficiency for Condensing Boiler. The combustion efficiency as calculated in section 2.7.1 ofthis Appendix shall be adjusted by adding the latent gain from the condensation ofthe water vapor in the flue gas and subtracting the heat loss (due to the flue condensate dmvn the drain) to obtain the combustion efficiency ofa condensing boiler.**~**

62 FILE Q:ldata\ee-40\ee-43\43connnon\nasserilnistreplnistreptwpd October 6. 1998 (7:04PM)

### Appendix F Commercial Furnace Test IDrrocedures

APPENDIX TO 

### SIBPART 

### HZ OF 

### PART431: 

### UNIFORM TEST PROC1EDILrRE FOR TWE h1EASI;;REMENTOF 

### ENERGY EFFICIENCY OF 

### COMMERCIAL WJ~RM AIR E%JIGWACES



### 1.0 Scope: o 

### 1.

I 

### This appendix covers the test procedures used for the measuring of 

### the steady statethermal efficiency of commercial warn air gas fired central fitrnaces and commercial warin air 

### oil 

### fired central furnaceswith capacity of 225,000Btrrffi or more. 1.2 For purpose of this Appendix, the measured thermal efficiency is eqid to f 

### 100

### - percent flue loss). 2.0Definitions 2.1 Gas Fired Central Furnaces. Definition ternls for gas fired central firrnaces shall be as specified in 

### PART 13 

### - DEFINITIONS, of the American National Standards Institute (AkVSI) Standard ANSI 221.17-1993. 2.2 Oil Fired CentralFurnaces. Definition terms for oil fired central furnaces shall be 8s specified in section 3 

### - Glossary, ofthe Underwriters I,aboratories, Tnc. Standard for Oil-Fired Central Furnaces, 

### IJL 727- 1994. 3.0 Test Procedures 3 

### I Gas Fired Central Furnaces The test setup, flue requirement, 

### instr~jrnentation, test condition, and measurementfor measuringthe thermal efticiency of gas fired central furnaces with rated input of 35,000BtuAl or more, shall be as specifiedin sections 2.1through 2.11, 

### section2.37 (Them~al Efficiency), and section 4.2 of the American National StandardsInstitute 

### (ANSI) Standardibr Gas-Fired Central Ftirnaces. 

### ANSI 21.47-1993. 

### 3.2 

### Oil Fired Central Furnaces. The test setup, ilue requirement, instrumentation,test condition, and measurement for measuringthe thernlal efficiency of oil fired central hl-naceswith rated input of 225,000

### Bm!% or more, shall be as specified in sections 31

### through 4 

### 1, section 42 (Combustion Test 

## - Burner and Furnace), and section47 

### (Temperature Tests), of the UnderwritersLaboratoxies Standard for Oil-Fired Central Furxaces, 

### UL, 727- 

### 1994. 3.2.1Measurement ofFlue CO, (Carbon Dioxide). 

### In addition to the flue temperature measurement as specjiied in section 40 6 

### 8 

### of LE, 

### 727, one or two samplingtubes shall be located within 

### six inches downstream from the flue temperature probe (as indicated on Figure 30.3 

### ofIJL 

### 727). 

### If 

### an open end tube is 

### used, it shall project intothe flue one-third of the chimney connector diameter. 

### If other methods of sampling are used, the sampling tube shall he placed so as to obtain an average sample. There shalt be no air leak between the temperature probe and the sarnpfing tube location. 'The fluegas sample shall be collected at the same time the flue gas temperamre is recorded. The CO, concentration ofthe flue gas shall be as specified by the manufacturer with a 63 FILE Q:\data\ee4O\ee-43\43c0mm~\nishq\nime@.wpd October 6,1998 (7:04PM) 

### Appendix F Commercial Furnace Test Procedures

APPENDIX D TO SUBPART B OF PART 431: UNIFORM TEST PROCEDURE FOR THE MEASl}REMENT OF ENERGY EFFICIENCY OF COMJ\1ERCIAL WARM AJRFuR1"JACES

1.0 Scope: 1.1 This appendix covers the test procedures used for the measU1ing ofthe steady state thermal efficiency ofcommercial warm air gas tired central furnaces and commercial warm air oil fired central furnaces with capacity of225,000 

### Btu/h or more. 1.2 For purpose ofthis Appendix, the measured thermal efficiency is equal to (100

- percent flue loss). 2.0 Definitions 2.1 Gas Fired Central Furnaces. Definition ternlS for gas fired central furnaces shall be as specified in PART XI

- DEFINITIONS, ofthe American National Standards Institute (.t\..i"JSI) Standard ANSI Z21.47-1993. 2.2 Oil Fired Central Furnaces. Definition terms for oil fired central furnaces shall be as specified in section 3**~** Glossary, ofthe Underwriters Laboratories, Inc. Standard for Oil-Fired Central Furnaces, UL 727-1994. 3.0 Test Procedures 3.1 Gas Fired Central Furnaces. The test setup, flue requirement, instrumentation, test condition, and measurement for measuring the thermal efticiency of gas fired central furnaces with rated input of**2~5,000** Btu/h or more, shall be as specified in sections 2.1 through 2.11, section 2.37 (Thernlal Efficiency), and section 4.2 ofthe .American National Standards Institute (ANSI) Standard for Gas-Fired Central Furnaces, ANSI 21.47-1993. 3.2 Oil Fired Central Furnaces. The test setup, tlue requirement, instrumentation, test condition, and measurement for measuring the thermal efficiency ofoil fired central furnaces with rated input of225,000 Btu/h or more, shall be as specified in sections 31 through 41, section 42 (Combustion Test

- Burner and Furnace), and section 47 (Temperature Tests), ofthe Undenvriters Laboratories Standard for Oil-Fired Central Furnac.es, UL 727-1994. 3.2.1 Measurement ofFlue CO2 (Carbon Dioxide). In addition to the flue temperature measurement as spec.ified in section 40.6.8 oflJL 727, one or two sampling tubes shall be located within six inches downstream from the flue temperature probe (as indicated on Figure 40.3 ofUL 727). Ifan open end tube is used, it shall project into the flue one-third ofthe chimney c.onnector dianleter. Ifother methods of sampling are used, the sampling tube shall be placed so as to obtain
an average sample. There shall be no air leak between the temperatme probe and th.e sampling tube location. The flue gas sample shall be collected at the same time the flue gas temperature is recorded. The CO2 concentration ofthe flue gas shall be as specified by the manufacturer with a
63 FILE Q:\datalee-40Iee·43143connnon\nasserilnistreplnistrept.wpd Ootober 6,199& (7:04PM)

### tolerance of*O. 

### 1%. 

### The flue CO, shall be determined with an instrumentproviding a reading with an error no greater than *0.1%.
4 " 

### 3.3 Optional Procedure for the Measurement of Condensatefor a Gas-Fired Condensing Furnace. The lest procedure for the measurement of the condensatefrom 

### the thegas under steady state operation shall be conducted as specified in section 9.2 of ASHRAE 

### stmdard 103-1993under the rated input conditions. This condensatemeasurenieiit, if selected to be conducted, shall be for an additional 30 minutes of steady state operation after the completion of the steady state combustion effrciency test specified in sec 2.1 ofthis appendix. 3.4 Calculation 3.4.1 Gas Fired Central Furnaces. The calculation procedure shall be as specified in section 2.37,Tf~ermal Efficiency, ofANSI 22

### 1.47-1 

### 993. 3.4.2 Oil Fired Central Furnaces. The caiilculationprocedurefor the percent flue loss and the steady state efficiency shall followthe procedure specifiedin section 11.2(Cornbustion Eficiency Test) ofthe 1989 Hydronics Institute (H.1) Testing and Heating Standardfor Heating Boilers. The thermal efficiency shall be calculated as: Thermal Efficiency = 

### 100 percent 

## - percent flueloss. 3.4.3 Procedure for the Calculation of the Additional Heat Gain and Heat loss, and Adjustment tothe Cornbustion Efficiency for a Condensing Furnace.
4 

### 3.4.3.1 Ifthe optional procedure for the measurement offlue condensate of sec. 2.3 

### of this Appendix is selected, the calculation of the latent heat gain from the condensation ofthe water vapor in 

### the flue gas and heat loss of dus to the flue condensate down the drain shall be as specified in section 11.3.7 1 

### and 11.3.7.2of ASmE Stai~dard 183-1993. 3.4.3.2 Adjustment to the comb us ti or^ 

### Eficiency for Condensing Furnace. The combustion efficiency as calculatedin 

### sec. 3.1

### ofthis Appendix shall be adjustedby adding the latent gain from the condensation of the water vapor in the flue gas and subtractingthe heat loss (due tothe flue condensate down the drain)to obtain the con~bustion efficiency of a condensing &mace.

FILE Q:Lkta\ee-40\ee-43\4komon~~~trep\nistrept.~d Ocloba 6,1998(7:04PM) tolerance of±0.1%. The flue CO2 shall be determined with an instrument providing a reading vv'ith an error no greater than ±O.l**~O.** 

# . . 3.3 Optional Procedure for the Measurement ofCondensate for a Gas-Fired Condensing Furnace. The test procedure for the measurement ofthe condensate from the t1ue gas under steady state operation shall be conducted as specified in section 9.2 ofASHRAE standard 103-1993 under the rated input conditions. This condensate measurement, ifselected to be conducted, shall be for an additional 30 minutes ofsteady state operation after the completion of the steady state combustion efficiency test specified in sec. 2.1 ofthis appendix. 3.4 Calculation. 3.4.1 Gas Fired Central Furnaces. The calculation procedure shall be as specified in section 2.37, Thermal Efficiency, ofANSI Z21.47-1993. 3.4.2 Oil Fired Central Furnaces. The calculation procedure for the percent Hue loss and the steady state efficiency shall follow the procedure specified in section 11.2 (Combustion Efficiency Test) ofthe 1989 Hydronics Institute (H.I) Testing and Heating Standard for Heating Boilers. The thermal efficiency shall be calculated as: Thermal Efficiency = 100 percent

- percent flue loss. 3.4.3 Procedure for the Calculation ofthe Additional Heat Gain and Heat loss, and Adjustment to the Combustion Efficiency for a Condensing Furnace

. 

## • 3.4.3.1 Ifthe optional procedure for the measurement offlue condensate of sec. 2.3 ofthis Appendix is selected, the calculation ofthe latent heat gain from the condensation ofthe water vapor in the flue gas and heat loss ofdue to the flue condensate down the drain shall be as specified in section 11.3.7.1 and 11.3.7.2 ofASHRAE Standard 103-1993. 3.4.3.2 Adjustment to the Combustion Efficiency for Condensing Furnace. The combustion efficiency as calculated in sec. 3.1 ofthis Appendix shall be adjusted by adding the latent gain from the condensation ofthe water vapor in the flue gas and subtracting the heat loss (due to the flue condensate down the drain) to obtain the combustion efficiency ofa condensing furnace.

64 FILE Q:ldatalee-40Iee-43143commonlnasseri'nistrep'nistrept.wpd October 6, 1998 (7:04PM)

### Appendix 

### F CommercialAir 

### Conditioners and Heat Pumps 'Test Procedures

APPEiVoIX 

### C TO S'ETRPART 

### B OF BART 

### 431- 

### U;WFORMTEST 

### METHODFOR MEASLX'XNGTHE el^^^^ EFFICIENCYOF 

### EL Ah'D 

### LARGE 

### CO~RCIAL 1'ACKAGE .4IR 

### COWITIO%TNG AW 

### HEATING EQUIPMENT, PACKAGE TER~AL AIR

### CONDITIONERS .L!D 

### HEAT Pu,~s.



### I. Scope: This appendixappliestothe determination of energy eaciency of small and large commercial pac.kageair conditioning and heating equipment, packageterminal air conditioners ax~d heat pumps as defined 

### in this appendix. 2.0 Definitions
9 

### 2.1 

## "ARI" means Air-Conditioning and Refrigeration Institute. 2.2 

## "ARIStandard 210/240-94" means the test standard published in 1994by the 

## AIRI and titled "Unitary -Air-Conditioningand Air-Source Heat Pump Equipment." 2.3 ",W 

### Standard 3 10/380-93" means the test standard published in 1993by the 

## ARI and titled "Standardfor Package Tenninal Air-Conditioners and Heat Pumps.

### " 2.4 

## "ARIStandard 320-93" means the test standard published in 1993by the .MU 

### and titled "Water-sourceHeat Pumps.

### " 2.5 

### "ARI Standard 3401360-93" means the test standardpublished in 

### 1993by 

### the ARE 

### and titled "Commercial and Industrial Unitary Air-Coi~ditioning and Air-Source Heat 

### Pump Equipment." 3.0Test Procedures 3.1 TestingRequired and Test Conditions 3.1.1 Testingrequired and test conditions for small commercialpackage air conditioning and headng equipment. 3.1

### .I.1

### Air-cooled small commercial package 

### unitary central air conditioners and air-conditioning heat pumpsrated 

### below65 

### kBtu/h cooling capacity. The required tests and tests conditions are those specified in 

### ARI Standard 210!'240-94 for obtaining the Seasonal Energy Esciency Ratio (SEER) and Heating Seasonal PerformanceFactor (HSPF) defined in this 

### Akl standard. 3.1.1.2

### Air-cooled small conlmercialpackage unitary central air conditioners and air-conditioning heat primps rated at 

### or above 65 

### kBtu/h and below 130kBtrlih 

### cooling capacity. In the cooling mode. 

### the required tests and tests conditions are those specified in ART 

### Standard 21

### 01'240-94 for obtaining the Energy Efficiency Ratio (EER) 

### at the standard cooling rating conditions with 95 

### "F dry bulb 

### entering air. 

### IIIthe heating mode for heat pumps, the required tests and tests conditions are those specified in 

### BRI Standard 210240-94 for obtaining the Coefficientof Performance (COP) at the standard heatingrating point with 47 OF; 

### dr~~ bulb entering air 3.1.1.3 

### Water-cooled. evaporatjvely cooled and water-source sn~al t 

### commercjtd air conditioners

65 FILE Q:&ta\ee-40\ee-43\4~an\nasseri\nistrepinime~.wpd Octoba 6,1998 (7:04PM) 

### Appendix F Commercial Air Conditioners and Heat Pumps Test Procedures

ApPENDIX C TO SUBPAUT B OF PART 431- liNIFORM TEST METHOD FOR MEASlJ'1UNG THE ENERGY EFFICIENCY OF Sl\lALL Al'I1) LARGE CO"MMERCIAL ]>ACKAGE AIR CONDITIOl'HNG A.,."'ID HEATING EQUIPMENT, PACKAGE TERlVIINAL AIR CONDITIONERS Al"iD HEAT PUMPS.

1. Scope: This appendix applies to the determination ofenergy efficiency ofsmall and large commercial package air conditioning and heating equipment, package terminal air conditioners and heat pumps as defined in this appendix. 2.0 Definitions



# .. 2.1 "ARl" means Air-Conditioning and Refrigeration Institute. 2.2 "ARl Standard 210/240-94" means the test standard published in 1994 by the ARI and titled "Unitary Air-Conditioning and Air-Source Heat Pump Equipment." 2.3 "ARI Standard 310/380-93" means the test standard published in 1993 by the AID and titled "Standard for Package Tenninal Air-Conditioners and Heat Pumps. II 2.4 "ARl Standard 320-93" means the test standard published in 1993 by the ARI and titled "Water-source Heat Pumps. 1\ 2.5 "ARI Standard 340/360-93" means the test standard published in 1993 by the ARI and titled "Commercial and Industrial Unitary Air-Conditioning and Air-Source Heat Pump Equipment." 3.0 Test Procedures 3.1 .Testing Required and Test Conditions 3.1.1 Testing required and test conditions for small commercial package air conditioning and heating equipment. 3.1.1.1 Air-cooled small commercial package unitary central air conditioners and air-conditioning heat pumps rated be)(}w.65 kBtu/h cooling capacity. The required tests and tests conditions are those specified in ARI Standard 210/240-94 for obtaining the Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF) defined in this AID standard. 3.1.1.2 Air-cooled small commercial package unitary central air conditioners and air-conditioning heat pumps rated at or above 65 kBtulh and below 130 kBtu/h cooling capacity. In the cooling mode, the required tests and tests conditions are those specified in 

### ART Standard 210/240-94 for obtaining the Energy Efficiency Ratio (EER) at the standard cooling rating conditions with 95 

### OF dry bulb entering air. In the heating mode for heat pumps, the required tests and tests conditions
are those specified in ARI Standard 210/240-94 for obtaining the Coefficient ofPerformance (COP) at the standard heating rating point 'with 47 

### OF dry bulb entering air. 3.1.1.3 Water-cooled, evaporatively cooled and water-source smaH commercial air conditioners

65 FILE Q:'datalee-40Iee-43143common'nasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)**,,~**

### and air-conditioning heat pumps. In 

### the cooling mode, the required tests and test conditions are those specifiedin 

## ARI Standard 210/240-94 for obtainingthe Energy Eficiency Ratio (EER) at the standard cooling rating conditionstvith 95 OF

### dry bulb enteringair for evaporatively cooled equipment and with 85 OF

### entering water temperature for water-cooled and water-source equipment. In the lleatingmode for the water-source heat pumps, the required tests and tests conditions are those specified in 

## ARI Standard 3263-93 for obtaining

### the Coefficientof Performance 

### (COP) at the standard heating rating point with 70 entering water temperature.
0 

### 3.1.2Testing required and test conditionsfor large commercial package air conditioning and heating equipment. 3.1.2.1Laxge commercial air-cooled air conditioners and air-conditioning heat pumps. In 

### the cooling mode, the required tests and tests conditio~~s are tliose specified in ARI Standard 340!360-93 for obtaining the Energy EfficiencyRatio (EER) at the standard coding rating conditions with 95 

### "F dry bulb entering air. In the heating mode for heat pumps, the required tests and tests conditions are those specified in 

### ARI Standard 310!360-93 for obtaining the CoeEcier~t ofPerformance 

### (COP)at the standard high temperature heating rating conditions with 47 

### "F 

### dry bulb entering air. 3.1.3.2Large commercial evaporativelycooled and water-cooled air conditioners and air-conditioning heat pumps. The required tests and tests conditions are those specified in ,4RI 

### Standard 340/'360-93for obtainingthe Energy Eficiency Ratio (EER) 

### at the standard cooling rating conditionswith 95 

### "F dry bulb enteringair for evaporatively cooled equipment and with 85

OF

### entering water temperature for water-cooled systems. 3.1.3 Package terminal air conditionerand package termillaf heat pumps. 

### In the cooling mode, the required tests and tests conditions are those specified in 

## ART Standard 3 

### 101'380-93 for obtainingthe Energy Efficiency Ratio 

### (EER) at the standard cooling rating conditionswith 95 

### "F dry bulb entering air? In the heating mode for heat pumps, the required tests and tests conditions are those specified in ARL Standard 315/380-93for obtaining the Coefficient ofPerformance 

### (COP) at the standard high-temperature heating rating conditions with 47 

### "F dry bulb entering air, 3.2 Testing procedures 3.2.I. 

### Testing procedures for small co~nmercial package air conditioning and heating equipment. 3.2.1.1Air-cooled small con~mercial package unitary central air conditioners and air-conditioning heat pumps rated below 65 kBtuih 

### cooling capacity. Therequired tests shdl be performed accordingto

## ARI Standard 2 

### 10!240-94. 3.2.1.S 

### Air-cooled small conlmercial package unitary central air co~zditioners and air-conditioning heat pumps rated at or above 65 

### kBtu/fiand belour 130

### kBtu/h cooling capacity. 

### The required tests shall be performed according to ARI Standard 210/240-94. 3.2.1.3 Water-cooled, evaporatively cooled and tvater-source small commercial air conditioners and air-conditioning heat pumps. In the coolingmode, the required tests shall be pelformed accordingto

## ARI Standard 210:'240-94. 

### In the heating mode for water-source heat pumps, the required tests shall be performed accordingto

## ARI Standard 330-93. 3.2.2Testing procedures for Large coinmercial package air conditioning and heating equipment

FILE Q:Liata\ee-4O\ee-43\4kommon~\nistrep\nimepttwpd Oaok6,1998 (7:04PM) and air-conditioning heat pumps. In the cooling mode, the required tests and test conditions are those specified in ARI Standard 210/240-94 for obtaining the Energy Efficiency Ratio (EER) at the standard cooling rating conditions with 95 of dty bulb entering air for evaporative1y cooled equipment and with 85 of entering water temperature for water-cooled and water-source equipment. In the heating mode for the water-source heat pumps, the required tests and tests conditions are those specified in ARI Standard 320-93 for obtaining the Coefficient of PerfOImance (COP) at the standard heating rating point with 70 of entering water temperature.**~** 3.1.2 Testing required and test conditions for large commercial package air conditioning and heating equipment. 3.1.2.1 Large commercial air-cooled air conditioners and air-conditioning heat pumps. ]n the cooling mode, the required tests and tests conditions are those specitied in ARt Standard 340/360-93 for obtaining the Energy Efficiency Ratio (EER) at the standard cooling rating conditions with 95 of dry bulb entering air. In the heating mode for heat pumps, the required tests and tests conditions are those specified in ARI Stan.dard 340/360-93 for obtaining the Coefficient ofPerfonnance (COP) at the standard high temperature heating rating conditions with 47°F 

### dry bulb entering air. 3.1.2.2 Large commercial evaporatively cooled and water-cooled air conditioners and air-conditioning heat pumps. The required tests and tests conditions are those specified in ARI Standard 340/360-93 for obtaining the Energy Efficiency Ratio (EER) at the standard cooling rating conditions with 95 

### OF dry bulb entering air for evaporatively cooled equipment and with 85 

### OF entering water temperature for water-cooled systems. 3.1.3 Package terminal air conditioner and package tenninal heat pumps. In the cooling mode, the required tests and tests conditions are those specified in ARI Standard 310/380-93 for obtaining the Energy Efficiency Ratio (EER) at the standard cooling rating conditions with 95 

### OF dry bulb entering**air~** In the heating mode for heat pumps, the required tests and tests conditions are those specified in ARL Standard 310/380-93 for obtaining the Coefficient ofPerfonnance (COP) at the standard high-temperature heating rating conditions with 47 

### OF dry bulb entering air. 3.2 Testing procedures 3.2.1 Testing procedures for small commercial package air conditioning and heating equipment. 3.2.1.1 Air-cooled small commercial package unitary central air conditioners and air-conditioning heat pumps rated below 65 kBtuih cooling capacity. The required tests shall be perfonned according to ARI Standard 210/240-94. 3.2.1.2 Air-cooled small commercial package unitary central air conditioners and air-conditioning heat pumps rated at or above 65 kBtulh and below 130 kBtulh cooling capacity. The required tests shall be performed according to ARI Standard 210/240-94. 3.2.1.3 Water-cooled, evaporative]y cooled and water-source small commercial air conditioners and air-conditioning heat pumps. In the cooling mode, the required tests shall be pelformed according to ARI Standard 210/240-94. In the heating mode for water-source heat pumps, the required tests shall be perfonned according to ARI Standard 320-93. 3.2.2 Testing procedures for large commercial package air conditioning and heating equipment

66 FILE Q:\data\ee-40\ee-43\43common\nasserilnislreplnistreptwpd October 6,1998 (7:04PM)

### 3.2.2.1Large commercial air-cooled air conditionersand air-conditioningheat 

### pumps. The required tests shall be performed according Standard 340,/360-93. 3.2.2.3Large conlrnercial evaporatively cooled and water-cooled air conciitioners and air-conditioning heat pumps. The required tests shall 

### be pertbnned according 

### ARI: Standard 3401360-93. 

### 3.2.3Testing procedures tbr package terminal air conditioner and package terminal 

### heat pumps. 

### The required tests shall be performed accordingto 

### ARI Standard 3 101380-93.

FILE Q:\datak-40\ee-43\43~m~Lustrep\ni~.wpd Ocroba6,1998 (7:WPM) 3.2.2.1 Large commercial air-cooled air conditioners and air-conditioning heat pumps. The required tests shall be performed according ARI Standard 340/360-93. 3.2.2.2 Large commercial evaporatively cooled and water-cooled air conditioners and air-conditioning heat pumps. The required tests shall be pertonned according ARI Standard 340/360-93. 3.2.3 Testing procedures for package terminal air conditioner and package terminal heat pumps. The required tests shall be performed according to ARI Standard 310/380-93.

67 FILE Q:'<latalee-40Iee-43143connnon\nasserilnistreplnistrept.wpd October 6, 1998 (7:04PM)