Docket Number: EER

ResFurnBoilers2013T

Test Procedure NOPR for Residential Furnace

A
2

Welcome and Introduction• Introductions• Role of the Facilitator

• Ground Rules

– Listen as an ally

– Focus on issues

– Use short, succinct statements/keep to the point

– Hold sidebar conversations outside the room

– One person speaks at a time (raise hand to be recognized; state y

the record)

– Set cell phones to silent/vibrate

• Housekeeping Items

• Agenda Review

• Opening Remarks
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Public Meeting Agenda

Description of IssueOptions and Proposed Corrective ActionClosing Remarks

4562 Regulatory History3 Rulemaking Overview

1 Introduction
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Listening Via the Webcast• The U.S. Department of Energy (DOE) is broadcasting this meet

over the internet.

• DOE is providing the webcast to accommodate stakeholders th

unable to attend the public meeting in person.

• The web broadcast allows stakeholders to listen in, view the sli

submit questions and comments.

• All stakeholders are encouraged to submit written comments a

public meeting.
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Purpose of the Public Meeting• Present the procedural and analytical approaches to evaluate t

procedure amendments for residential furnaces and boilers.

• Invite comment on the test procedure notice of proposed rulem

(NOPR).

• Discuss next steps in the rulemaking.

• Encourage participants to submit data, information, summary s

and written comments, including additional issues for discussio
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Request for Comment

Issue box numbering corresponds to the list of items published at 

the NOPR document, available at:

http://www1.eere.energy.gov/buildings/appliance_standards/res

naces_boilers.htmlThe deadline for submitting comments is April 22, 2013.

Item: While DOE invites comment on all aspects of the materia

presented in this document, several specific issues on which DO

comment are set out in comment boxes like this one. DOE uses 

comment boxes to highlight issues and to ask specific questions 

approaches DOE plans to use or has used to conduct the analys

required for this test procedure rulemaking. Such requests for f

are numbered sequentially throughout the document.
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Public Meeting Agenda

Description of IssueOptions and Proposed Corrective ActionClosing Remarks

4562 Regulatory History3 Rulemaking Overview

1 Introduction
8

Regulatory History• Energy Policy and Conservation Act (EPCA) of

1975 (Public Law 94‐163)

– Established the energy conservation program for

consumer products other than automobiles, which

includes residential furnaces and boilers.

– Directs DOE to establish test procedures in conjunction

with energy conservation standards.

• Energy Independence and Security Act of 2007

(EISA 2007) (Public Law 110‐140)

– Directed DOE to incorporate standby mode and off mode

for all final rules prescribing energy conservationstandards that are published after July 1, 2010. (42

U.S.C. 6295(gg)(3)(A))

– Directed DOE to develop a test procedure to measure

standby mode and off mode energy consumption of

residential furnaces and boilers no later than September

30, 2009. (42 U.S.C. 6295(gg)(2)(B)(iii))
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Regulatory History• On May 12, 1997, DOE published a final rule in the Federal Register es

current active mode test procedure which incorporates by reference t

Society of Heating, Refrigerating, and Air‐conditioning Engineers (ASH

103‐1993. 62 FR 26140.

– On February 24, 1998, DOE revised a provision concerning the insul

collector box. 63 FR 9390.

• On October 20, 2010, DOE published in the Federal Register a final ru

a method for measuring the electrical energy use in standby mode an

which incorporates by reference the International Electro‐technical Co

(IEC) Standard 62301 (First Edition). 75 FR 64621.

– On December 31, 2012, DOE published another final rule which upd

incorporation by reference to the latest edition of IEC Standard 6230

Edition). 77 FR 76831.

• On January 4, 2013, DOE published a request for information (RFI) rel

residential furnace and boiler annual fuel utilization efficiency (AFUE) 

78 FR 675.

– Key issues included avenues for reducing test burden and the additio

performance test for automatic means of adjusting water temperatu

boilers.
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Public Meeting Agenda

Description of IssueOptions and Proposed Corrective ActionClosing Remarks

4562 Regulatory History3 Rulemaking Overview

1 Introduction
11

Steps in the Rulemaking Process

• DOE published the residential furnace and boiler test procedur

February 4, 2013. 78 FR 7681.

• DOE is holding the NOPR public meeting today, March 13, 2013

• DOE will accept comments on the NOPR from interested partie

− Oral comments from today’s meeting will be recorded and 

− Interested parties can submit written comments until April 

• DOE reviews and considers all comments.

• DOE expects to issue a final rule summer 2013.

NOPR Final 

Rule
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Public Meeting Agenda

Description of IssueOptions and Proposed Corrective ActionClosing Remarks

4562 Regulatory History3 Rulemaking Overview

1 Introduction
13

Test Procedure and Description of the Issue• DOE’s test procedure at 10 CFR part 430, subpart B, Appendix N 

ASHRAE Standard 103‐1993, “Method of Testing for Annual FueEfficiency of Residential Central Furnaces and Boilers.”

• Section 9.10 of ASHRAE 103 ‐1993 (and by extension the DOE p

Appendix N) allows for the omission of the heat‐up and cool‐do

for units complying with the requirements of section 9.10, whi

‐ Condensing units with no measurable airflow through the combu

chamber and heat exchanger during the burner off‐period which 

purge period(s) of less than 5 seconds.

• The test method currently lacks equations to calculate the hea

seasonal efficiency for two‐stage and modulating condensing fboilers when heat‐up and cool‐down tests are omitted.
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Description of AFUE Inflation

• For most models, AFUE is calculated using a computer program develo

National Institute of Standards and Technology (NIST) and refined by th

conditioning, Heating and Refrigerating Institute’s (AHRI) predecessor, Appliance Manufacturers Association (GAMA).

• For models tested using section 9.10, test engineers are likely to have

inappropriately entered zeros for the heat‐up and cool‐down test temp

inputs.

‐ Since the existing equations in the test procedure do not account f

option 9.10 in modulating units, entering zeros lead to erroneous 

‐ Research into this issue by AHRI has shown that this approach ove

AFUE ratings by approximately 1‐4%.

• Although the proposed test procedure changes may lead to a revised 

for certain models rated using section 9.10, re‐rating models using the 

proposed in the NOPR would not be expected to result in an AFUE bel

minimum efficiency required by the standards.
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Public Meeting Agenda

Description of IssueOptions and Proposed Corrective ActionClosing Remarks

4562 Regulatory History3 Rulemaking Overview

1 Introduction
16

Options to Correct Existing Test Procedure

• DOE has considered two options to correct this issue for two‐sta

modulating, condensing furnaces and boilers, including:

1. Suspending the use of the option in section 9.10 and requiring th

cool‐down test be performed on two‐stage and modulating conde

– DOE has decided not to pursue this approach, as it would inc

burden on manufacturers, industry, and test laboratories.

2. Develop additional equations to correct the existing test procedu

– This is DOE’s proposed action. The proposed revision to the te

would rectify the error by adopting additional equations for t

of the part‐load efficiencies at the maximum and reduced inp

units eligible to utilize section 9.10.
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Proposed Correction: Concept

If the option in section 9.10 of ASHRAE 103‐1993 is not employed:

െ௃ ܮ௃ܥ െ஼ ܮ െ ீܮ ൅ ஺,௅ܮ െ 100 ൌ ுௌݕ݂݂ܧ

ைேݐ

ݐைே ൅ ܳ௉ ܳூே ݐைிி ሺܮௌ,ைே ൅ ܮௌ,ைிி 

െ௃ ܮ௃ܥ െ஼ ܮ െ ீܮ ൅ ஺,௅ܮ െ 100 ൌ ுௌݕ݂݂ܧ

ைேݐ

ݐைே ൅ ܳ௉ ܳூே ݐைிி ሺܥௌሻሺܮௌ

If the option in section 9.10 of ASHRAE 103‐1993 is employed:

The concept of replacing cyclic infiltration and sensible heat losses with s

infiltration and sensible heat losses exists in the test procedure in the eq

single‐stage models. It also applies for two‐stage and modulating furnace

condensing furnaces and boilers.
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Proposed Correction: Equations

െ௃ ܮ௃ܥ െ஼ ܮ െ ீܮ ൅ ஺,௅ܮ െ 100 ൌ ு,௎ݕ݂݂ܧ

ைேݐ

ݐைே ൅ ܳ௉ ܳூே ݐைிி ሺܥௌሻሺܮௌ

If the option in section 9.10 of ASHRAE 103‐1993 is employed:

11.5.11.1 Part‐Load Efficiency at Reduced Fuel Input Rate

Item 1: DOE seeks comment on the proposed equations for determininheating seasonal efficiency (which contributes to the ultimate calculatio

of two‐stage and modulating condensing furnaces and boilers that are t

under option 9.10 of ASHRAE 103‐1993.

െ௃ ܮ௃ܥ െ஼ ܮ െ ீܮ ൅ ஺,௅ܮ െ 100 ൌ ோ,௎ݕ݂݂ܧ

ைேݐ

ݐைே ൅ ܳ௉ ܳூே ݐைிி ሺܥௌሻሺܮௌ

11.5.11.2 Part‐Load Efficiency at Maximum Fuel Input Rate
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Regulatory Review

• DOE has concluded that the proposed rule would not have a sig

impact on a substantial number of small entities.

‐ The proposed equations would lessen the manufacturer burden in 

to the current TP, which does not provide the needed equations t9.10.

Item 2: DOE seeks comment on the conclusion that the costs of complyi

proposed test procedure changes are small relative to the overall cost of

manufacturing, testing, and certifying residential furnace and boiler pro

with any additional information regarding average annual revenues for

manufacturers of these products.

Approach to Re‐Rate Co

Perform heat‐up and cool‐down test ~$120 per basi

Manually calculate using new equations ~$30‐60 per ba

Reprogram software ~$1280‐3200 o
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Public Meeting Agenda

Description of IssueOptions and Proposed Corrective ActionClosing Remarks

4562 Regulatory History3 Rulemaking Overview

1 Introduction
21

How to Submit Written Comments• In all correspondence, please refer to the residential furnace and boil

rulemaking by:

 Residential Furnace and Boiler Test Procedure Rulemaking

 Docket Number EERE‐2013‐BT‐TP‐0008

 Regulatory Identification Number (RIN) 1904‐AC96

• Email: ResFurnBoilers2013TP0008@ee.doe.gov

Postal: Courier:

Ms. Brenda Edwards

U.S. Department of Energy

Building Technologies Program, Mailstop EE‐2J1000 Independence Avenue, SW

Washington, DC 20585‐0121

Ms. Brenda Edwards

U.S. Department of Energy

Building Technologies Progra

950 L’Enfant Plaza, SWWashington, DC 20024Tel: 202 586‐2945

Comment period closes: April 22, 2013, 11:59 PM EDT
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Results of Testing for Boiler Models “A” and “B

Value

Description

Model A Model 

Scenario 1:

Heat‐up/ cool‐down

tests

Scenario 2:

Employ 9.10 using

new calculations

Scenario 1:

Heat‐up/ cool‐down

tests

ܦி Draft Factor .05 .05 .05 

ܥௌ Correction factor that corrects for the use

of outside air for combustion

1.446 1.446 1.541 

ܮௌ,ைே On‐cycle sensible heat loss 1.956 N/A 1.766 

ܮ ஺௅Average Latent Heat Loss of test fuel used 9.55 9.55 9.55 

ܮௌ,ௌௌ Average Sensible Heat Loss at Steady‐State

Operation

1.393 1.393 1.149 

ܮ ஼Part‐Load Heat Loss Due to Condensate

Going Down the Drain

.014 .014 .0577 

ܮீ Latent Heat Gain Under Part‐Load

Conditions

.6665 .6665 3.64 

ܮூ,ைே Off‐cycle infiltration loss 0 N/A 0 

ܮூ,ைிி On‐cycle infiltration loss 0 N/A 0 

ܮௌ,ைிி Off‐cycle sensible heat loss, for system 9 or

10

.0199 N/A .0487 

ܧ݂݂ݕௌௌ,ோ Steady‐state efficiency at reduced firing rate 89.63 89.63 91.97 

ܧ݂݂ݕ௎,ோ Part‐load efficiency reduced firing rate 89.13 89.09 92.22 

ܧ݂݂ݕ௎,ெ Average part‐load efficiency at modulating

firing rate

89.65 89.65 91.67 

ܧ݂݂ݕு,ௌ Heating Seasonal Efficiency 89.48 89.45 92.02 

AFUE Annual Fuel Utilization Efficiency 89.48 89.45 92.02