### US Department of

### Energy 

### October 

### 13, 1998 

# The Second Workshop on Commercial Equipment Test . Procedures
US Department ofEnergy October 13, 1998

# Outline Rulemaking Process 

### Overview * 

### Sampling, Certification and 

### Enforcement 

### Discussion ofProposed TestProcedures

- 

### CommercialWater 

### Heaters

- 

### Commercial 

### "Packaged" Boilers

- 

### CommercialFurnaces

- 

### CommercialAir Conditioners and 

### Heat Pumps 

### Next Steps 

# Outline

A 8 

### • Rulemaking Process Overview • Sampling, Certification and Enforcement • Discussion ofProposed TestProcedures

- Commercial Water Heaters

- Comlllercial "Packaged" Boilers

- Commercial Furnaces

- Commercial Air Conditioners and Heat Pumps 

### • Next Steps

# RulemakingProcess Overview First Workshop (4114-4/15) * 

### 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) 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 (ifNecessary, April 1999) • Final Rule

# 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 

### similarto 

### those for 

### consumerproducts?

- 

### What 

### shouldbe 

### the approach

### forbasic 

### models which are: * large in capacity? sold in very small quantities? 

# 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 DOEWorkshop 

### on Test Proceduresfor Commercial Water Heaters, 

### Boilers, Furnaces,

### Air Conditioners 

### and Heat 

### Pumps October 13, 1998 Stephen J. Treado National Institute of Standards and Technology Gaithersburg, MD 

### 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[Section4.1.1

### - 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 [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 

### DOEApproval Independentlyoperated programfor certifying equipment performance Based on 

### measurements Testing at 

### or by independent lab Periodic verification testing Non-compliantequipment must 

### be 

### delisted or obsoleted Tested units must 

### be selected randomly Written operational procedures and equipment directory Must seek 

### DOE approval [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[Section4. 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 [Section 4.1.4] 

### Product Certification for VICP Participants
• Certify the mean energy performance ofthe population ofeach basic model • Any sample size or alternative method • Any valid statistical method • Maintain permanent records[Section4.1.31 

### 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 · [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[Section4.1.41 

### 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 [Section 4.1.4] 

### Designated Sampling Plan
• For energy efficiency - lesser ofthe sample mean or the lower 

### 95% confidence limit divided by 0.95 • For energy usage - greater ofthe sample mean or the upper 95% confidence limit divided by 1.05[Section4.1.31 

### Alternative 

### Methods Performance results based on measurements 

### could include using analytical methodswhich have 

### been verified usingtesting results Validation procedures must be approved by a 

### registered PE, and 

### maintained 

### as a 

### permanent record [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[Section4.1.51 

### Enforcement Essentiallythe same 

### as 

### for residential equipment 

### Double-sample, two-sided confidence limit approach Exceptionsfor small quantities or large size units [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

### CommercialWater Heaters

- 

### What industry 

### test procedure 

### should DOE 

### reference for commercial water heaters?

- 

### Define the exemption fortanks >I40

### gallons. 

### Unfired Storage 

### Tanks

- 

### Since there are no testprocedures 

### for determining 

### the heat loss from unfired 

### storagetanks,

### NIST is proposing two 

### alternatives.

- 

### Define the 

### exemption for 

### tanks >I40

### gallons. , 

# 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 standardsto instantaneouswater heaters? 

### Table of 

### standards and test 

### procedures for 

### commercial

### water heaters & 

### unfired storage 

### tanks. 

# Commercial Water Heaters Cont'd.
, , 

### • Coverage and Definitions

- What standards apply to "hot water supply boilers?"

- How should DOE apply commercialequipment standards to instantaneous water heaters? 

### • Table ofstandards and test procedures for commercial water heaters & 

### unfired storage tanks.

### Test Proceduresfor CommercialWater Heaters and 

### Unfired 

### HotWater Storage 

### Tanks

0 0 0 

### DOEWorkshop 

### on Test Proceduresfor CommercialWater Heaters, Boilers, Furnaces, Air Conditioners 

### and Heat Pumps October 

### 13, 

### 1998 

### W. Stuart 

### Dols National Institute of 

### Standards and 

### Technology Gaithersburg, 

### MD 

### Test Procedures for Commercial Water Heaters and Unfired HotWater 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 instantaneouswater heaters - Unfired hotwater storage tanks 

### Coverage 

### Issues



### - Hotwater supply boilers - Instantaneouswater heaters delivery temperature 2180°F storagevolumes 2 2 gallons and input ratings in consumer product range 

### 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 * ReferencedbyASHRAE 90.1-1989, Addendum n Same procedures as ANSl 221.10.3-1990which was in effect June 30, 1992 - Provisions madefor Electric and Oil-firedwater heaters ASHRAE 90.1-1 989 Addendum n, Table 11.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 Needto determine whether it meets EPCA requirementsfor test procedures 

### Proposed Provisions for Commercial Water Heaters • Test Procedure Incorporated by Reference [App C] -Sections ofANSI 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 

### Provisionsfor Unfired HotWater Storage 

### Tanks * 

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


### - Equivalent electric storagewater heater method Standby losstest (ANSI221.10.3-1993) of same tank configured as an electric storagewater heater Meant for tanks with storagevolumes r 140 gallons


### - Externally heated water method To be usedwhere Equivalentwater heater method is not applicable Procedure has yet to bevalidated 

### Proposed Provisions for Unfired HotWater 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

### CommercialWater Heaters 

### and Unfired Hot

### Water Storage Tanks Exemptionfrom 

### Standby 

### Loss and Heat 

### LossTesting [Sections 4.2.2 and 4.2.31

- No standing pilot light, storage capacity > 140gallons, tank surface area thermally insulatedto R-12.5 (or more)

- DOE is considering approaches that would aid building code inspection and verification of compliancewith these provisions. 

### Commercial Water Heaters and Unfired HotWater 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

# - HotWater 

### Supply 

### Boilers [Section 4.2.2and App C] * 

### Designedfor servicewater 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 accordingto ANSI 221.10.3-1993 

### Coverage Issues - HotWater Supply Boilers [Section 4.2.2 and App C] • Designedfor 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

# - InstantaneousWater Heaters [Section4.2.2and App C]

e 

### Designedto 

### heatwater to 

### temperatures of 

### 180°F or 

### higher



### - Designedfor 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

- Designedfor commercial applications 

### - DOE 10 CFR 430 does not apply to these products regardless of input rating - DOE is consideringwhether these products should be subject to commercialstandards regardless of input rating 

### 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 CommercialWater Heater Products

a.V isthe ratedstorage capacityof thewater heater in gallons. b.Water heaterswithstoragecapacities greaferthan 140gallons,tank suface area insulatedto

R-12.5 or greater, and nostanding pilot light need not meet standbylossrequirements. Unjredhot waterstorage trmks.The maximumheat lossof unfired hot water storage tanks shall be 6.5Btu per hour persquarefoot oftank surface area.Hotwater storagetanks having more than 140 gallons of storage capacity need not meetthisheat lossrequirementif thetank surface area is thermally insulated to R-12.5 orgreater.

NOTE:Instantaneouswater 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 StorageWater-It featers Gas Storage WaterHeaters Thermal Efficiency da 7ph

Electric Instantaneous WaterHeaters < 12kW > 75,000 Btu/h and 155,WBtuh > 155,000Btdh > 105,000&u/h and >12kW s 155,000Btuk Oil StorageWaterEleaters > 155,000Btdh 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 < 10gal I $a '210~al1 2.3+67/V 780/0

I GasInstantaneousWater Heaters 1>200'00;)~* < 10 gal r10gal Oil InstantaneousWaterHeaters n/a 2.3+67lV >2 10,000Ru/h 

### 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 WaterHeaters**~** 155,000 BtuAl > 155,000 Btufh _l.3 + 95/V > 105,000 Btulh and 1.3 + 114/V Oil Storage WaterHeaters**~** 155,000 Btuth > 155,000 Btufh 1.3 + 951V Electric Instantaneou') WaterHeaters > 12kW < 10 gal nla 2 1

### ° gal 2.3 + 671V Gas Instantaneous Water Heaters > 200,000 Btulh < 10 gal nla 2 10gal 2.3 + 67/V Oil Instantaneous WaterHeaters > 210,000 Btulh < 10 gal nla 2 10 gal 2.3 + 67/V a. V is the rated storage capacity ofthewater heater in gallons. b. Water heaterswith storage capacities greater than 140gallons. 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%
Unfiredhotwaterstorage tanks. The maximum heat loss oftmftred hot water storage tanks shall be 6.5 Btuper hour persquare foot oftank surface area. Hotwater storagetanks having more than 140 gallons of storage capacity need not meet this heat loss requirementifthe tank surface area is thermally insulatedto R-12.5 orgreater.

NOTE: Instantaneous water heater issues not addressed

# Commercial 

# Boilers Definition of 

### "Packaged Boiler"

- 

### Shouldthere be a 

### size limit?

- 

### Should

### the testprocedure be limited to ASME 

### Power Testing Code 

### (PTC)? 

### Combustion Efficiency; Jacket Loss

- 

### Should parasitic electric lossesbe included?

- 

### Shouldjacket losstest 

### be required? 

# ·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?

- Shouldjacket loss test be required?

### Uniformity ofTest 

### Conditions, Setup and Procedures

- 

### In case 

### ofmore than one test 

### procedures 

### referenced, which one 

### shouldbe used?

- 

### Shouldthere 

### be a

### modificationto 

### the boiler inlet 

### and outlet temperatures? 

# Commercial Boilers (Cont'd.)

8 8 

### • Uniformity ofTest Conditions, Setup and Procedures

- In case ofmore than one test procedures referenced, which one should be used?

- Should there be a modification to the boiler inlet and outlettemperatures?

### Other Provisions?

- 

### Condensingboilers

- 

### Modulating boilers

- 

### Modular boiler 

### assemblies

- 

### Testing of

### hot waterlstearn boilers 

### with steam 

### only

- 

### Different 

### set ofrequirements 

### for low temperature applications. 

# Commercial Boilers (Cont'd.)

8 

### • Other Provisions?

- Condensing boilers

- Modulating boilers

- Modular boiler asselllblies 8

- Testing ofhot waterlstealll boilers with steam only

- Different set ofrequirements for low temperature applications.

### ProposedTest 

### Procedure For Commercial 

### Packaged Heating 

### Boilers DOE

### Workshop on Test Proceduresfor Commercial Water Heaters, Boilers, Furnaces,Air Conditioners and 

### Heat Pumps October 13, 1998 Stanley T. Liu National Instituteof Standards and Technology Gaithersburg, MD 

### 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[Section4.3.11 

### ASHRAE 90.1 

### ReferencedTest Standards for Commercial 

### Boilers Fivetest 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 -1989 for oil and gas-fired boilers - UL 726-1 995 for oil-fired boilers - UL 795-1994 for gas-fired boilers - ASME PTC 4.1'for steam generating boilers (oil and gas) [Section 4.3.1] 

### 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 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 

### inthis Proposed 

### Provisign
Definitionof 

### "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 [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)[Section4.3. 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 manufactureras 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] 

### 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.[Section4.3.1] 

### 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 [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[Section4.3.21 

### Adoption 

### of a 

### Single Test 

### Procedure There are differences in test conditions 

### and test setup among the five referencedtest 

### standards. Some 

### provide only limitedscope in energy performance test. 

### HI standard provided 

### a completetest setup and procedurefor gas 

### and oil fired boilers. 

### ANSl 

### 221.13 is 

### similar to 

### HI but only for 

### gas. Proposed: To adopt 

### HI -1989 standard for all low pressure steam and hotwater boilerswith modification 

### in hot water inlet 

### and outlet temp 

### to those specified 

### in ANSl 

### 221 

### .I 3-1993a 

### of 80

# + 10 OF 

### in; 

### 180 2 OF

### out. 

### (HI specifies 

### a wider 

### 35 to 

### 80 OF 

### in; 200 OF

### out.) [Section 4.3.2]**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.)[Section4.3.21 

### Test 

### Methqdfor Gas Condensipg 

### Boilers
To provide the test 

### method needed

### for design option evaluation. Proposed:To adopt the 

### steady state test methodfor 

### flue condensate measurement as specified in 

### ASHRAE 103-1993. [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.[Section4.3.21 

### 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 needsto be tested. 

### Boiler as 

### a steam and 

### a hot

### water boiler - Proposed: Steamtest for a boiler designed as a steam and a hotwater boiler. Optionalwater test for hot water version. [Section 4.3.2] 

### Modular and Multiple Boilers Systems; Steam And HotWater 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 adjustmentbe 

### made 

### for outdoor 

### conditionsto the 

### ANSI 22

### 1.47 jacket loss 

### test procedure? 

### OtherProvisions?

- 

### Modulating furnaces
- 

### Condensing fumes. 

# 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 Z21.47jacket loss test procedure? 

### • Other Provisions?

- Modulating furnaces

- Condensing furnaces.

### Proposed Test Proceduresfor Co~mercial 

### Warm Air Furnaces DOE

### Workshop on Test Proceduresfor Commercial Water 

### Heaters, Boilers, Furnaces,Air Conditioners 

### and Heat Pumps October 13, 1998 Stanley T. Liu National Instituteof Standards and Technology Gaithersburg, MD 

### 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[Section4.4.21 

### ASHRAE 90.1 

### ReferencedTest Standards for CommercialWarm 

### Air 

### Furnaces

Two test 

### standards referenced in

### ASHRAE 90.1-1989 for warm air furnaces



### -ANSI 221.47 -1993 for Gas-firedfurnaces 

### - UL 727-1994 for oil-fired furnaces [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[Section4.41 

### Warm Air Furnaces

# - Issue Discussed

Definitionof 

### 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] 

### Warm Air Furnaces - Issue Discussed

• Definition ofthermal 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)[Section4.4.31 

### Defjnition of 

### Thermal Efficiency
EPAct 

### specifies the 

### minimum efficiency standards 

### in terms of 

### the 

### thermal efficiency. -ANSI227.47-1993: Definesthermal efficiency as equalto a calculated combustion efficiency. 

### - UL 727-1994: Based on flue loss. 

### - Proposed: Definesthermal efficiency as (100 

### - % Flue Loss) on the basis of the test standards. [Section 4.4.3] 

### Defjnition ofThermal E(ficiency

• EPAct specifies the minimum efficiency standards in terms ofthe thermal efficiency.

- ANSIZ21.47-1993: 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 ofthe 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 procedurefor 

### oil tired turnaces. [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.[Section4.4.41 

### Test 

### Method 

### for Gas-Fired Condensing 

### Furnaces

* 

### To provide the test method neededfor design option evaluation. Proposed: 

### To adopt the 

### steady statetest methodfor 

### flue condensate 

### measurementspecified 

### in

### ASHRAE [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 

### 221.47-1993 and 

### an optionaltest 

### methodfor gas-fired condensing furnaces under 

### steady state condition as specified in ASHRAE 103-1993. OiI-Fired Furnaces: UL 727-1994,

### with the addition of the 

### flue loss calculation procedure, 

### as specified 

### inthe

1989 Hydronics Institute

### test standard for 

### oil-fired 

### boilers. [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 staticpressure requirement? "Heating only" heat 

### pumps? Computerroom 

### air conditioners? 

# Commercial Air Conditioners and Heat Pum s· 8 8 

### • Minimum external static pressure requirement? • "Heating only" heat pumps? • Computerroom air conditioners?

### Test 

### Proceduresfor Commercial Air Conditioners and Heat#Pumps DOEWorkshop 

### on Test Procedures

### for Commercial

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

### and Heat 

### Pumps October 13, 1 998 PiotrA. Domanski National Instituteof Standards and Technology Gaithersburg, MD 

### Test Procedures for Commercial Air Conditioners and HeatPumps
# # 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[Section4.51 

### CommercialAir Conditioners and 

### Heat Pumps Small 

### & large commercial package

### ACs 

### and HPs Packaaedterminal 

### ACs and HPs I 

### wo 

### coveraae Issues heating-only heat pumps 

### computer room air conditioners 

### NIST recommendation: Equipment not 

### covered [Section 4.5] 

### Commercial Air Conditioners and Heat Pumps .' Small & large commercial package ACs and HPs • Packaged terminal ACs and HPs Two coverage issues
• heating-only heat pumps

< • computer room air conditioners 

### NIST recommendation: Equipment not covered[Section4.5.21 

### Heating-only Heat 

### Pumps EPAct definitions for heat pumps (either small, 

### large or packageterminal) 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 4.5.2] 

### 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 roomACs can achieve similar EER 

### Different application 

### --+ equipment coolingvs. 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 byASHRAE 

### 90.1-89 [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 ASHRAE 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 

# 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