US Department of Energy 

October 13, 1998 

 EE-TP-98-101 COMMENT 08DD

The Second Workshop on 

Commercial Equipment Test . 

Procedures 

US Department of Energy 

October 13, 1998 
Outline 

Rulemaking Process Overview 

* Sampling, Certification and Enforcement 

Discussion of Proposed Test Procedures 

- Commercial Water Heaters 

- Commercial "Packaged" Boilers 

- Commercial Furnaces 

- Commercial Air Conditioners and Heat Pumps 

Next Steps 

 EE-TP-98-101 COMMENT 08DD

Outline 

A 8 

• Rulemaking Process Overview 

• Sampling, Certification and Enforcement 

• Discussion of Proposed Test Procedures 

- Commercial Water Heaters 

- Comlllercial "Packaged" Boilers 

- Commercial Furnaces 

- Commercial Air Conditioners and Heat Pumps 

• Next Steps 
Rulemaking Process Overview 

First Workshop (411 4-4/15) 

* Develop Test Procedure Recommendations 

C 

Publication of NOPR 

Public Comment and Regulatory Hearing 

Third Workshop (if Necessary, April 1999) 

Second Workshop (Discuss NIST Test 

Procedure Recommendations) 

 EE-TP-98-101 COMMENT 08DD

8 

Rulemaking Process Overview 

8 8 

• First Workshop (4/14-4/15) 

• Develop Test Procedure Recommendations 

• Second Workshop (Discuss NIST Test + 

Procedure Recommendations) 

• Publication ofNOPR 

• Public Comment and Regulatory Hearing 

• Third Workshop (if Necessary, April 1999) 

• Final Rule 
 EE-TP-98-101 COMMENT 08DD

Sampling, Certification and . 

. Enforcement 

., ., 

• Compliance Certification 

- What should the certification be based on? 

• industry programs? 

• direct representation to DOE? 

- How should the sample be selected? 

- Should cOll1puter simulation/analytical 

procedures be used? 
Enforcement Sampling 

- Should the provisions be similar to those for 

consumer products? 

- What should be the approach for basic models 

which are: 

* large in capacity? 

sold in very small quantities? 

 EE-TP-98-101 COMMENT 08DD

Sampling, Certification and 

Enforcement Cont' d. 

» » 

• Enforcement Sampling 

- Should the provisions be similar to those for 

consumer products? 

- What should be the approach for basic models 

which are: 

• large in capacity? 

• sold in very small quantities? 
Sampling, Certification and Enforcement 

DOE Workshop on Test Procedures for Commercial 

Water Heaters, Boilers, Furnaces, Air Conditioners and 

Heat Pumps 

October 13, 1998 

Stephen J. Treado 

National Institute of Standards and Technology 

Gaithersburg, MD 

 EE-TP-98-101 COMMENT 08DD

Sampling, Certification and Enforcement 

DOE Workshop on Test Procedures for Commercial 

Water Heaters, Boilers, Furnaces, Air Conditioners and 

Heat Pumps 

October 13, 1998 

Stephen J. Treado 

National Institute of Standards and Technology 

Gaithersburg, MD 
[Section 4.1.1 - 4.1.21 

Certification 

Manufacturers certify compliance based on testing or 

alternative method 

Two sets of slightly different procedures 

- DOE-approved Voluntary Independent Certification 

Program (VICP) 

- Non-participating manufacturers 

Compliance statement and certification report 

submitted to DOE 

 EE-TP-98-101 COMMENT 08DD

[Section 4.1.1 - 4.1.2] 

Certification 

• Manufacturers certify compliance based on testing or 

alternative method 

• Two sets of slightly different procedures 

, - DOE-approved Voluntary Independent Certification 

Program (VICP) 

- Non-participating manufacturers 

• Compliance statement and certification report 

submitted to DOE 
[Section 4.1.41 

Voluntary Independent Certification 

Program - Criteria for DOE Approval 

Independently operated program for certifying 

equipment performance 

Based on measurements 

Testing at or by independent lab 

Periodic verification testing 

Non-compliant equipment must be delisted or obsoleted 

Tested units must be selected randomly 

Written operational procedures and equipment directory 

Must seek DOE approval 

 EE-TP-98-101 COMMENT 08DD

[Section 4.1.4] 

Voluntary Independent Certification 

Program - Criteria for DOE Approval 41 41 

• Independently operated program for certifying 

equipment performance 

• Based on measurements 

• Testing at or by independent lab 

• Periodic verification testing 

• Non-compliant equipment must be delisted or obsoleted 

• Tested units must be selected randomly 

• Written operational procedures and equipment directory 

• Must seek DOE approval 
[Section 4. I .4] 

Product Certification for VlCP Participants 

Certify the mean energy performance of the 

population of each basic model 

Any sample size or alternative method 

Any valid statistical method 

Maintain permanent records 

 EE-TP-98-101 COMMENT 08DD

[Section 4.1.4] 

Product Certification for VICP Participants 

• Certify the mean energy performance of the 

population of each basic model 

• Any sample size or alternative method 

• Any valid statistical method 

• Maintain permanent records 
[Section 4.1.31 

Product Certification for non-VICP 

Participants 

Testing at or by independent lab or have independent 

PE review and certify the results 

Use designated sampling plan or alternative method 

 EE-TP-98-101 COMMENT 08DD

· [Section 4.1.3] 

Product Certification for non-VICP 

Participants 

• Testing at or by independent lab or have independent 

PE review and certify the results 

• Use designated sampling plan or alternative method 
[Section 4.1.41 

Designated Sampling Plan 

For energy efficiency - lesser of the sample mean or 

the lower 95% confidence limit divided by 0.95 

For energy usage - greater of the sample mean or 

the upper 95% confidence limit divided by 1.05 

 EE-TP-98-101 COMMENT 08DD

[Section 4.1.4] 

Designated Sampling Plan 

• For energy efficiency - lesser of the sample mean or 

the lower 95% confidence limit divided by 0.95 

• For energy usage - greater of the sample mean or 

the upper 95% confidence limit divided by 1.05 
[Section 4.1.31 

Alternative Methods 

Performance results based on measurements could 

include using analytical methods which have been 

verified using testing results 

Validation procedures must be approved by a 

registered PE, and maintained as a permanent 

record 

 EE-TP-98-101 COMMENT 08DD

[Section 4.1.3] 

Alternative Methods 

• Performance results based on measurements could 

include using analytical methods which have been 

verified using testing results 

• Validation procedures must be approved by a 

registered PE, and maintained as a permanent 

record 
[Section 4.1.51 

Enforcement 

Essentially the same as for residential equipment 

Double-sample, two-sided confidence limit approach 

Exceptions for small quantities or large size units 

 EE-TP-98-101 COMMENT 08DD

[Section 4.1.5] 

Enforcement 

• Essentially the same as for residential equipment 

• Double-sample, two-sided confidence limit approach 

• Exceptions for small quantities or large size units 
Commercial Water Heaters 

- What industry test procedure should DOE 

reference for commercial water heaters? 

- Define the exemption for tanks >I40 gallons. 

Unfired Storage Tanks 

- Since there are no test procedures for determining 

the heat loss from unfired storage tanks, NIST is 

proposing two alternatives. 

- Define the exemption for tanks >I40 gallons. 

 EE-TP-98-101 COMMENT 08DD

, 

Commercial Water Heaters 

8 

• Commercial Water Heaters 

- What industry test procedure should DOE 

reference for commercial water heaters? 

- Define the exemption for tanks> 140 gallons. 

• Unfired Storage Tanks 

8 

- Since there are no test procedures for determining 

the heat loss from unfired storage tanks, NIST is 

proposing two alternatives. 

- Define the exemption for tanks> 140 gallons. 
Coverage and Definitions 

- What standards apply to "hot water supply 

boilers?" 

- How should DOE apply commercial equipment 

standards to instantaneous water heaters? 

Table of standards and test procedures for 

commercial water heaters & unfired storage 

tanks. 

 EE-TP-98-101 COMMENT 08DD

Commercial Water Heaters 

Cont'd. 

, , 

• Coverage and Definitions 

- What standards apply to "hot water supply 

boilers?" 

- How should DOE apply commercial equipment 

standards to instantaneous water heaters? 

• Table of standards and test procedures for 

commercial water heaters & unfired storage 

tanks. 
Test Procedures for Commercial Water Heaters 

and Unfired Hot Water Storage Tanks 

0 0 0 

DOE Workshop on Test Procedures for 

Commercial Water Heaters, Boilers, Furnaces, 

Air Conditioners and Heat Pumps 

October 13, 1998 

W. Stuart Dols 

National Institute of Standards and Technology 

Gaithersburg, MD 

 EE-TP-98-101 COMMENT 08DD

Test Procedures for Commercial Water Heaters 

and Unfired Hot Water Storage Tanks 

(J 

DOE Workshop on Test Procedures for 

Commercial Water Heaters, Boilers, Furnaces, 

Air Conditioners and Heat Pumps 

October 13, 1998 

W. Stuart Dols 

National Institute of Standards and Technology 

Gaithersburg, MD 
Introduction 

- Storage and instantaneous water heaters 

- Unfired hot water storage tanks 

Coverage Issues 

- Hot water supply boilers 

- Instantaneous water heaters 

delivery temperature 21 80°F 

storage volumes 2 2 gallons and 

input ratings in consumer product range 

 EE-TP-98-101 COMMENT 08DD

Introduction 

• Test Procedures 

- Storage and instantaneous water heaters 

- Unfired hot water storage tanks 

• Coverage Issues 

- Hot water supply boilers 

- Instantaneous water heaters 

• delivery temperature >180°F 

• storage volumes > 2 gallons and 

input ratings in consumer product range 
Proposed Provisions for 

Commercial Water Heaters 

Test Procedure Incorporated by Reference [~ppc] @ 

- Sections of ANSl 221.10.3-1993 related to efficiency testing 

* Referenced by ASHRAE 90.1-1 989, Addendum n 

Same procedures as ANSl 221.10.3-1990 which was in effect 

June 30, 1992 

- Provisions made for Electric and Oil-fired water heaters 

ASHRAE 90.1-1 989 Addendum n, Table 1 1. I, footnote e 

Other Procedures Considered [section 4.2.21 

- ASHRAE 118.1-1993 

Not referenced by ASHRAE 90.1-1989 

Unresolved issues that might affect requirements 

- ANSl 221.10.3-1998 

Need to determine whether it meets EPCA requirements for 

test procedures 

 EE-TP-98-101 COMMENT 08DD

Proposed Provisions for 

Commercial Water Heaters 

• Test Procedure Incorporated by Reference [App C] 

-Sections of ANSI Z21.1 0.3-1993 related to efficiency testing 

• Referenced by ASHRAE 90.1-1989, Addendum n 

• Same procedures as ANSI Z21.1 0.3-1990 which was in effect 

June 30, 1992 

- Provisions made for Electric and Oil-fired water heaters 

• ASHRAE 90.1-1989 Addendum n, Table 11.1, footnote e 

• Other Procedures Considered [Section 4.2.2] 

- ASHRAE 118.1-1993 

• Not referenced by ASHRAE 90.1-1989 

• Unresolved issues that might affect requirements 

- ANSI Z21.1 0.3-1998 

• Need to determine whether it meets EPCA requirements for 

test procedures 
Proposed Provisions for 

Unfired Hot Water Storage Tanks 

* Proposed Test Procedure (two methods) ~~pp D] 

- Equivalent electric storage water heater method 

Standby loss test (ANSI 221.10.3-1993) of same tank 

configured as an electric storage water heater 

Meant for tanks with storage volumes r 140 gallons 

- Externally heated water method 

To be used where Equivalent water heater method is not 

applicable 

Procedure has yet to be validated 

 EE-TP-98-101 COMMENT 08DD

Proposed Provisions for 

Unfired Hot Water Storage Tanks 

• Proposed Test Procedure (two methods) LApp 0] 

- Equivalent electric storage water heater method 

• Standby loss test (ANSI Z21.10.3-1 993) of same tank 

configured as an electric storage water heater 

.• Meant for tanks with storage volumes < 140 gallons 

- Externally heated water method 

• To be used where Equivalent water heater method is not 

applicable 

• Procedure has yet to be validated 
Commercial Water Heaters and 

Unfired Hot Water Storage Tanks 

Exemption from Standby Loss and Heat Loss Testing 

[Sections 4.2.2 and 4.2.31 

- No standing pilot light, storage capacity > 140 gallons, tank 

surface area thermally insulated to R-12.5 (or more) 

- DOE is considering approaches that would aid building code 

inspection and verification of compliance with these 

provisions. 

 EE-TP-98-101 COMMENT 08DD

Commercial Water Heaters and 

Unfired Hot Water Storage Tanks 

• Exemption from Standby LOss and Heat Loss Testing 

[Sections 4.2.2 and 4.2.3] 

- No standing pilot light, storage capacity> 140 gallons, tank 

surface area thermally insulated to R-12.5 (or more) 

- DOE is considering approaches that would aid building code 

inspection and verification of compliance with these 

provIsions. 
Coverage Issues - Hot Water Supply Boilers 

[Section 4.2.2 and App C] 

* Designed for service water heating 

ASHRAE 90.1-1 989n amended energy requirement 

DOE is considering ASHRAE 90.1-1 989 Addendum n 

approach to coverage of hot water supply boilers 

- Input 2 300,000 Btu/h 

- Same requirements as commercial instantaneous water 

heaters 

- Test according to ANSI 221.10.3-1 993 

 EE-TP-98-101 COMMENT 08DD

Coverage Issues - Hot Water Supply Boilers 

[Section 4.2.2 and App C] 

• Designed for service water heating-

• ASHRAE 90.1-1989n amended energy requirement 

• DOE is considering ASHRAE 90.1-1989 Addendum n 

approach to coverage of hot water supply boilers 

- Input > 300,000 Btu/h 

- Same requirements as commercial instantaneous water 

heaters 

- Test according to ANSI Z21.1 0.3-1993 
Coverage Issues - Instantaneous Water Heaters 

[Section 4.2.2 and App C] 

e Designed to heat water to temperatures of 180°F or 

higher 

- Designed for commercial applications 

- DOE 10 CFR 430 does not apply to these. products 

regardless of input rating 

- DOE is considering whether these products should be 

subject to commercial standards regardless of input rating 

Storage volume r 2 gallons 

- Designed for commercial applications 

- DOE 10 CFR 430 does not apply to these products 

regardless of input rating 

- DOE is considering whether these products should be 

subject to commercial standards regardless of input rating 

 EE-TP-98-101 COMMENT 08DD

Coverage Issues - Instantaneous Water Heaters 

[Section 4.2.2 and App C] 

• Designed to heat water to temperatures of 180°F or 

higher 

- Designed for commercial applications 

- DOE 10 CFR 430 does not apply to these products 

regardless of input rating 

- DOE is considering whether these products should be 

subject to commercial standards regardless of input rating 

• Storage volume > 2 gallons 

- Designed for commercial applications 

- DOE 10 CFR 430 does not apply to these products 

regardless of input rating 

- DOE is considering whether these products should be 

subject to commercial standards regardless of input rating 
Table of Energy Conservation Standards for 

Commercial Water Heater Products 

a. V is the rated storage capacity of thewater heater in gallons. 

b. Water heaterswith storage capacities greafer than 140 gallons, tank suface area insulated to 

R-12.5 or greater, and no standing pilot light need not meet standby loss requirements. 

Unjred hot water storage trmks. The maximum heat loss of unfired hot water storage tanks shall be 6.5 Btu per 

hour per square foot of tank surface area. Hot water storage tanks having more than 140 gallons of storage capacity 

need not meet this heat loss requirement if the tank surface area is thermally insulated to R-12.5 or greater. 

NOTE: Instantaneous water heater issues not addressed 

Storage 

Volume Product Class 

Energy Standard 

Input Ratmg o Standby 

Loss [%/hr]%b 

0 3+ 27/V 

1.3+114/V 

1.3 + 95/V 

Electric Storage Water- It feater s 

Gas Storage Water Heaters 

Thermal 

Efficiency 

da 

7ph 

Electric Instantaneous Water Heaters 

< 12 kW 

> 75,000 Btu/h and 

155,W Btuh 

> 155,000 Btdh 

> 105,000 &u/h and 

>12kW 

Oil Storage Water Eleaters s 155,000 Btuk 

> 155,000 Btdh 

1.3-+114/V 

1.3 -+ 95/V 

80% 

77% 

80% I 

77% 

80% 

77% 

< 10 gal I da 

L 1Ogal 1 2.3 + 67/V 

< 10 gal I $a 

'210~al1 2.3+67/V 

780/0 

I 

Gas Instantaneous Water Heaters 1>200'00;)~* 

< 10 gal 

r10gal 

Oil Instantaneous Water Heaters n/a 

2.3+67lV 

> 2 10,000 Ru/h 

 EE-TP-98-101 COMMENT 08DD

Table of Energy Conservation Standards for 

Commercial Water Heater Products 

Storage Energy Standard 

Product Class Input Rating ., Standby Volume 

Loss [%/hr]a.b 

Electric Storage Water Heaters < 12 kW 0.3 + 27/V 

> 75,000 Btulh and 1.3 + 114/V Gas Storage Water Heaters ~ 155,000 BtuAl 

> 155,000 Btufh _ l.3 + 95/V 

> 105,000 Btulh and 1.3 + 114/V Oil Storage Water Heaters ~ 155,000 Btuth 

> 155,000 Btufh 1.3 + 951 V 

Electric Instantaneou') Water Heaters > 12kW < 10 gal nla 

2 1 ° gal 2.3 + 671 V 

Gas Instantaneous Water Heaters > 200,000 Btulh < 10 gal nla 

2 10gal 2.3 + 67/V 

Oil Instantaneous Water Heaters > 210,000 Btulh < 10 gal nla 

2 10 gal 2.3 + 67/V 

a. V is the rated storage capacity of the water heater in gallons. 

b. Water heaters with storage capacities greater than 140 gallons. tank stl'face area insulated to 

R-12.5 or greater, and no standing pilot light need not meet standby loss requirements. 

Thennal 

Efficiency 

nla 

78010 

780/0 

8CPIo 

77% 

8CPIo 

77% 

8CPIo 

77% 

Unfired hot water storage tanks. The maximum heat loss of tmftred hot water storage tanks shall be 6.5 Btu per 

hour per square foot of tank surface area. Hot water storage tanks having more than 140 gallons of storage capacity 

need not meet this heat loss requirement if the tank surface area is thermally insulated to R-12.5 or greater. 

NOTE: Instantaneous water heater issues not addressed 
Commercial Boilers 

Definition of "Packaged Boiler" 

- Should there be a size limit? 

- Should the test procedure be limited to ASME 

Power Testing Code (PTC)? 

Combustion Efficiency; Jacket Loss 

- Should parasitic electric losses be included? 

- Should jacket loss test be required? 

 EE-TP-98-101 COMMENT 08DD

· Commercial Boilers 

8 

• Definition of "Packaged Boiler" 

- Should there be a size limit? 

8 

- Should the test procedure be limited to ASME 

Power Testing Code (PTC)? 

• Combustion Efficiency; Jacket Loss 

- Should parasitic electric losses be included? 

- Should jacket loss test be required? 
Uniformity of Test Conditions, Setup and 

Procedures 

- In case of more than one test procedures 

referenced, which one should be used? 

- Should there be a modification to the boiler 

inlet and outlet temperatures? 

 EE-TP-98-101 COMMENT 08DD

Commercial Boilers (Cont'd.) 

8 8 

• Uniformity of Test Conditions, Setup and 

Procedures 

- In case of more than one test procedures 

referenced, which one should be used? 

- Should there be a modification to the boiler 

inlet and outlet temperatures? 
Other Provisions? 

- Condensing boilers 

- Modulating boilers 

- Modular boiler assemblies 

- Testing of hot waterlstearn boilers with steam 

only 

- Different set of requirements for low 

temperature applications. 

 EE-TP-98-101 COMMENT 08DD

Commercial Boilers (Cont ' d.) 

8 

• Other Provisions? 

- Condensing boilers 

- Modulating boilers 

- Modular boiler asselllblies 

8 

- Testing of hot waterlstealll boilers with steam 

only 

- Different set of requirements for low 

temperature applications. 
Proposed Test Procedure For Commercial 

Packaged Heating Boilers 

DOE Workshop on Test Procedures for Commercial 

Water Heaters, Boilers, Furnaces, Air Conditioners 

and Heat Pumps 

October 13, 1998 

Stanley T. Liu 

National Institute of Standards and Technology 

Gaithersburg, MD 

 EE-TP-98-101 COMMENT 08DD

Proposed Test Procedure For Commercial 

Packaged Heating Boilers 

DOE Workshop on Test Procedures for Commercial 

Water Heaters, Boilers, Furnaces, Air Conditioners 

and Heat Pumps 

October 13, 1998 

Stanley T. Liu 

National Institute of Standards and Technology 

Gaithersburg, MD 
[Section 4.3.11 

ASHRAE 90.1 Referenced Test 

Standards for Commercial Boilers 

Five test standards referenced in ASHRAE 90.1- 

1989 for packaged boilers (most recent updated 

versions listed) 

- ANSI 221 -13-1 993a for gas-fired boilers 

- H I Standard -1 989 for oil and gas-fired boilers 

- UL 726-1 995 for oil-fired boilers 

- UL 795-1 994 for gas-fired boilers 

- ASME PTC 4.1' for steam generating boilers (oil and gas) 

 EE-TP-98-101 COMMENT 08DD

[Section 4.3.1] 

ASHRAE 90.1 Referenced Test 

Standards for Commercial Boilers ~ ~ 

• Five test standards referenced in ASH RAE 90.1-

1989 for packaged boilers (most recent updated 

versions listed) 

- ANSI Z21.13-1993a for gas-fired boilers 

- H I Standard -1989 for oil and gas-fired boilers 

- UL 726-1995 for oil-fired boilers 

- UL 795-1994 for gas-fired boilers 

- ASME PTe 4.1 for steam generating boilers (oil and gas) 
[Section 4.31 

Issues Discussed in this Proposed 

Provisign 

Definition of "Packaged Boiler" (Sec. 4.3.1) 

Scope of coverage (Sec. 4.3.1) 

Adoption of a single test procedure (Sec. 4.3.2) 

Test for gas condensing boilers (See. 4.3.2) 

Modular boilers and multiple boilers (Sec. 4.3.2) 

Steam test for a steam and hot water boiler 

 EE-TP-98-101 COMMENT 08DD

[Section 4.3] 

Issues Discussed in this Proposed 

Provision 

• Definition of "Packaged Boiler" (Sec. 4.3.1) 

• Scope of coverage (Sec. 4.3.1) 

• Adoption of a single test procedure (Sec. 4.3.2) 

• Test for gas condensing boilers (Sec. 4.3.2) 

• Modular boilers and multiple boilers (Sec. 4.3.2) 

• Steam test for a steam and hot water boiler 

(Sec. 4.3.2) 
[Section 4.3. I] 

Definition of Packaged Boiler 

Definition 

- EPAct: A boiler that is shipped complete with heating 

equipment, mechanical draft equipment, and automatic 

controls; usually shipped in one or more sections. 

- UL 726: A boiler assembly shall be factory-built as a group 

assembly and may be shipped as two or more 

subassemblies, and if not assembled by the manufacturer as 

a unit, shall be arranged in major subassemblies and be 

capable of being incorporated into the final assembly without 

requiring alteration, cutting, drilling, threading, welding, or 

similar tasks by the installer. 

 EE-TP-98-101 COMMENT 08DD

[Section 4.3.1] 

Definition of P~ckaged Boiler 

• Definition 

- EPAct: A boiler that is shipped complete with heating 

equipment, mechanical draft equipment, and automatic 

controls; usually shipped in one or more sections. 

- UL 726: A boiler assembly shall be factory-built as a group 

assembly and may be shipped as two or more 

subassemblies, and if not assembled by the manufacturer as 

a unit, shall be arranged in major subassemblies and be 

capable of being incorporated into the final assembly without 

requiring alteration, cutting, drilling, threading, welding, or 

similar tasks by the installer. 
[Section 4.3.1 ] 

Scope of Coverage O 

Proposed: Limited to ASME Section IV low 

pressure heating boilers 

Proposed: High pressure steam and high 

temperature water boilers (ASME Section I, 

Power Boilers) excluded 

 EE-TP-98-101 COMMENT 08DD

[Section 4.3.1] 

Scope of Coverage ~ 

• Proposed: Limited to ASME Section IV low 

pressure heating boilers 

• Proposed: High pressure steam and high 

temperature water boilers (ASME Section I, 

Power Boilers) excluded 
[Section 4.3.21 

Adoption of a Single Test Procedure 

There are differences in test conditions and test setup 

among the five referenced test standards. Some 

provide only limited scope in energy performance test. 

HI standard provided a complete test setup and 

procedure for gas and oil fired boilers. 

ANSl 221.13 is similar to HI but only for gas. 

Proposed: To adopt HI -1 989 standard for all low 

pressure steam and hot water boilers with modification 

in hot water inlet and outlet temp to those specified in 

ANSl 221 .I 3-1 993a of 80 + 10 OF in; 180 2 OF out. 

(HI specifies a wider 35 to 80 OF in; 200 OF out.) 

 EE-TP-98-101 COMMENT 08DD

[Section 4.3.2] 

A~option of a Single Test Procedure 

• There are differences in test conditions and test setup 

among the five referenced test standards. Some 

. provide only limited scope in energy performance test. 

• HI standard provided a complete test setup and 

procedure for gas and oil fired boilers. 

• ANSI Z21.13 is similar to HI but only for gas. 

• Proposed: To adopt HI -1989 standard for all low. 

pressure steam and hot water boilers with modification 

in hot water inlet and outlet temp to those specified in 

ANSI Z21.13-1993a of 80± 10 OF in; 180 ± 2 OF out. 

(HI specifies a wider 35 to 80 OF in; 200 OF out.) 
[Section 4.3.21 

Test Methqd for Gas Condensipg Boilers 

To provide the test method needed for design option 

evaluation. 

Proposed: To adopt the steady state test method for 

flue condensate measurement as specified in 

ASHRAE 103-1993. 

 EE-TP-98-101 COMMENT 08DD

[Section 4.3.2] 

Test MethQd for Gas Condensing Boilers 

• To provide the test method needed for design option 

evaluation. 

• Proposed: To adopt the steady state test method for 

flue condensate measurement as specified in 

ASHRAE 103-1993. 
[Section 4.3.21 

Modular and Multiple Boilers Systems; 

Steam And Ho er Boiler 

Modular boiler system and multiple boiler system 

with identical individual moduleslboilers of less 

than 400,000 Btulh input each 

- Proposed: One module in the system needs to be 

tested. 

Boiler as a steam and a hot water boiler 

- Proposed: Steam test for a boiler designed as a steam 

and a hot water boiler. Optional water test for hot water 

version. 

 EE-TP-98-101 COMMENT 08DD

[Section 4.3.2] 

Modular and Multiple Boilers Systems; 

Steam And Hot Water Boiler 

• Modular boiler system and multiple boiler system 

with identical individual modules/boilers of less 

than 400,000 Btu/h input each 

- Proposed: One module in the system needs to be 

tested. 

• Boiler as a steam and a hot water boiler 

- 'Proposed: Steam test for a boiler designed as a steam 

and a hot water boiler. Optional water test for hot water 

version. 
Combustion Efficiency; Jacket Loss 

- How should "thermal efficiency" be defined? 

- Should an adjustment be made for outdoor 

conditions to the ANSI 22 1.47 jacket loss test 

procedure? 

Other Provisions? 

- Modulating furnaces 

- Condensing fumes. 

 EE-TP-98-101 COMMENT 08DD

Commercial Furnaces 

8 8 

• Combustion Efficiency; Jacket Loss 

- How should "thermal efficiency~~ be defined? 

- Should an adjustment be made for outdoor 

conditions to the ANSI Z21.47 jacket loss test 

procedure? 

• Other Provisions? 

- Modulating furnaces 

- Condensing furnaces. 
Proposed Test Procedures for 

Co~mercial Warm Air Furnaces 

DOE Workshop on Test Procedures for Commercial 

Water Heaters, Boilers, Furnaces, Air Conditioners 

and Heat Pumps 

October 13, 1998 

Stanley T. Liu 

National Institute of Standards and Technology 

Gaithersburg, MD 

 EE-TP-98-101 COMMENT 08DD

Proposed Test Procedures for 

Commercial Warm Air Furnaces 

DOE Workshop on Test Procedures for Commercial 

Water Heaters, Boilers, Furnaces, Air Conditioners 

and Heat Pumps 

October 13, 1998 

Stanley T. Liu 

National Institute of Standards and Technology 

Gaithersburg, MD 
[Section 4.4.21 

ASHRAE 90.1 Referenced Test Standards for 

Commercial Warm Air Furnaces 

Two test standards referenced in ASHRAE 90.1-1 989 for 

warm air furnaces 

- ANSI 221.47 -1 993 for Gas-fired furnaces 

- UL 727-1 994 for oil-fired furnaces 

 EE-TP-98-101 COMMENT 08DD

[Section 4.4.2] 

AS·HRAE 90.1 Referenced Test Standards for 

Commercial Warm Air Furnaces 

• Two test standards referenced in ASHRAE 90.1-1989 for 

warm air furnaces 

- ANSI Z21.47 -1993 for Gas-fired furnaces 

- UL 727-1994 for oil-fired furnaces 
[Section 4.41 

Warm Air Furnaces - Issue Discussed 

Definition of thermal efficiency (Sec. 4.4.3) 

Flue loss calculation for oil-fired furnaces (Sec. 4.4.4) 

Test for gas-fired condensing furnaces (Sec. 4.4.4) 

 EE-TP-98-101 COMMENT 08DD

[Section 4.4] 

Warm Air Furnaces - Issue Discussed 

• Definition of thermal efficiency (Sec. 4.4.3) 

• Flue loss calculation for oil-fired furnaces (Sec. 4.4.4) 

• Test for gas-fired condensing furnaces (Sec. 4.4.4) 
[Section 4.4.31 

Defjnition of Thermal Efficiency 

EPAct specifies the minimum efficiency standards in 

terms of the thermal efficiency. 

- ANSI 227.47-1993: Defines thermal efficiency as equal to a 

calculated combustion efficiency. 

- UL 727-1994: Based on flue loss. 

- Proposed: Defines thermal efficiency as (100 - % Flue Loss) on 

the basis of the test standards. 

 EE-TP-98-101 COMMENT 08DD

[Section 4.4.3] 

Defjnition of Thermal E(ficiency 

• EPAct specifies the minimum efficiency standards in 

terms of the thermal efficiency. 

- ANSI Z21.47-1993: Defines thermal efficiency as equal to a 

calculated combustion efficiency. 

- UL 727-1994: Based on flue loss. 

- Proposed: Defines thermal efficiency as (100 - % Flue Loss) on 

the basis of the test standards. 
[Section 4.4.41 

Flue Loss Calculation for Oil Fired Furnaces 

UL 727 (for oil furnaces) does not provide a flue loss 

calculation. 

Proposed: Adopt the flue loss calculation procedure 

specified in the 1 989 Hydronics Institute test standard 

for oil fired boilers as the calculation procedure for oil 

tired turnaces. 

 EE-TP-98-101 COMMENT 08DD

[Section 4.4.4] 

Flue Loss Calculation for Oil Fired FlJrnaces 

• UL 727 (for oil furnaces) does not provide a flue loss 

calculation. 

• Proposed: Adopt the flue loss calculation procedure 

specified in the 1989 Hydronics Institute test standard 

for oil fired boilers as the calculation procedure for oil 

fired furnaces. 
[Section 4.4.41 

Test Method for Gas-Fired Condensing 

Furnaces 

* To provide the test method needed for design option 

evaluation. 

Proposed: To adopt the steady state test method for 

flue condensate measurement specified in ASHRAE 

 EE-TP-98-101 COMMENT 08DD

[Section 4.4.4] 

Test Method for Gas-Fired Condensing 

Furnaces 

• To provide the test method needed for design option 

evaluation. 

• Proposed : To adopt the steady state test method for 

flue condensate measurement specified in ASHRAE 

103-1993. 
[Appendix F] 

Proposed Test Procedures 

Gas-Fired Furnaces: ANSI 221.47-1 993 and an 

optional test method for gas-fired condensing 

furnaces under steady state condition as specified in 

ASHRAE 103-1993. 

OiI-Fired Furnaces: UL 727-1 994, with the addition of 

the flue loss calculation procedure, as specified in the 

1989 Hydronics Institute test standard for oil-fired 

boilers. 

 EE-TP-98-101 COMMENT 08DD

[Appendix F] 

Proposed Test Procedures 

• Gas-Fired Furnaces: ANSI Z21.47-1993 and an 

optional test method for gas-fired condensing 

furnaces under steady state condition as specified in 

ASHRAE 103-1993. 

• Oil-Fired Furnaces: UL 727-1994,. with the addition of 

the flue loss calculation procedure, as specified in the 

1989 Hydronics Institute test standard for oil-fired 

boilers. 
Minimum external static pressure 

requirement? 

"Heating only" heat pumps? 

Computer room air conditioners? 

 EE-TP-98-101 COMMENT 08DD

Commercial Air Conditioners 

and Heat Pum s· 

8 8 

• Minimum external static pressure 

requirement? 

• "Heating only" heat pumps? 

• Computer room air conditioners? 
Test Procedures for Commercial 

Air Conditioners and Heat#Pumps 

DOE Workshop on Test Procedures for Commercial Water 

Heaters, Boilers, Furnaces, Air Conditioners 

and Heat Pumps 

October 13, 1 998 

Piotr A. Domanski 

National Institute of Standards and Technology 

Gaithersburg, MD 

 EE-TP-98-101 COMMENT 08DD

Test Procedures for Commercial 

Air Conditioners and Heat Pumps # # 

DOE Workshop on Test Procedures for Commercial Water 

Heaters, Boilers, Furnaces, Air Conditioners 

and Heat Pumps 

October 13, 1998 

Piotr A. Domanski 

National Institute of Standards and Technology 

Gaithersburg, MD 
[Section 4.51 

Commercial Air Conditioners and Heat Pumps 

Small & large commercial package ACs and HPs 

Packaaed terminal ACs and HPs 

I wo coveraae Issues 

heating-only heat pumps 

computer room air conditioners 

NIST recommendation: Equipment not covered 

 EE-TP-98-101 COMMENT 08DD

[Section 4.5] 

Commercial Air Conditioners and Heat Pumps 

.' Small & large commercial package ACs and H Ps 

• Packaged terminal ACs and HPs 

Two coverage issues 

• heating-only heat pumps < 

• computer room air conditioners 

NIST recommendation: Equipment not covered 
[Section 4.5.21 

Heating-only Heat Pumps 

EPAct definitions for heat pumps (either small, large 

or package terminal) are limited to equipment having 

both cooling and heating functions. 

-+ Heating-only HPs do not meet the statutory definition. 

Heating-only HPs are not available on the U.S. 

market. 

 EE-TP-98-101 COMMENT 08DD

[Section 4.5.2] 

Heating-only Heat Pumps 

• EPAct definitions for heat pumps (either small, large 

or package terminal) are limited to equipment having 

both cooling and heating functions. 

~ Heating-only HPs do not meet the statutory 

definition. 

• Heating ... only HPs are not available on the U.S. 

market. 
[Section 4.5.31 

Computer Room Air Conditioners 

' Basic design concepts similar to those for comfort cooling 

commercial ACs 

-+ computer room ACs can achieve similar EER 

Different application 

--+ equipment cooling vs. comfort cooling 

Different design features 

-+ smaller deadband around the set point, humidity control 

Lower design operating point (72°F) 

-+ ASHRAE Std. 127 is used 

* Not covered by ASHRAE 90.1-89 

 EE-TP-98-101 COMMENT 08DD

[Section 4.5.3] 

Computer Room Air Conditioners 

• .. Basic design concepts similar to those for comfort cooling 

commercial ACs 

~ computer room ACs can achieve similar EER 

• Different application 

~ equipment cooling vs. comfort cooling 

• Different design features 

~ smaller deadband around the set point, humidity control 

• Lower design operating point (72°F) 

~ ASHRAE Std. 127 is used 

• Not covered by ASH RAE 90.1-89 
Next Steps 

Written comments due: November 1 3, 

1998 

Workshop transcripts: two weeks 

NOPRs: March 1999 

Public Hearing: April 1999 

Final rules: January 2000 

 EE-TP-98-101 COMMENT 08DD

Next Steps 

8 8 8 

• Written comments due: November 13, 

1998 

• Workshop transcripts: two weeks 

• NOPRs: March 1999 

• Public Hearing: April 1999 

• Final rules: January 2000