Test Procedures for Furnaces and Boilers

Incorporation of Provisions for Addressing Energy 

Standby Mode and Off Mode

Notice of Proposed Rulemaking (NOPR) 

Public Meeting 

Building Technologies Program

Office of Energy Efficiency and Renewable Energy

U.S. Department of Energy

August 18, 2009

http://www.eere.energy.gov/buildings/appliance_standards/furnaces and bo

EERE-2008-BT-TP-0020 COMMENT 06
Purposes

• To present the Department’s proposed te

procedure amendments;

• Seek comment from participants on the 

proposed test procedure amendments

• To discuss specific issues or questions 

to the proposed amendments; and

• To describe the next steps.

Purpose of the Public Meeting

Introductio

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Opening Remarks

• At this time, DOE welcomes opening remarks from in

parties on the NOPR for Furnaces and Boilers.

Comments from Participants

• Participants are invited to provide summary commen

statements;

• Participants are invited to raise additional issues for 

discussion today; and

• Participants are invited to submit comments during th

comment period, which is open through October 13, 

Opening Remarks and Comments from Interes

Parties on the Proposed Test Procedures 

Introductio

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Steps in Furnace/Boiler Test Proced

Rulemaking

NOPR issued by DOE on July 27, 2009NOPR Public Meeting today, August 18, 2009Comments on NOPR from interested parties 

• Transcript of oral comments from today’s public me• Written comments (comment period closes 75 day

publication in the Federal Register October 13, 20

DOE reviews and considers all commentsFinal Rule Publication

• Final Rule will be issued as soon as possible after 

of the comment period.

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Regulatory History

Test Procedures: 

DOE’s current test procedure for residential furnaces and boilers is CFR part 430, subpart B, appendix N, Uniform Test Method for MeEnergy Consumption of Furnaces and Boilers. May 12, 1997. 62 F

These procedures include energy efficiency, energy use descriptorfuel utilization efficiency (AFUE), annual fuel and electric energy coannual operating cost.

Energy Conservation Standards:

DOE prescribed an amended AFUE-based standard for furnaces a2007. 72 FR 65136 (Nov. 19, 2007). AFUE is a fossil fuel only effdescriptor.

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Regulatory History- continued

• Energy Independence and Security Act of 2007 (EISA 

Directs DOE to incorporate a measure of standby- aenergy consumption into its test procedures for resfurnaces and boilers

• EISA 2007 also directs DOE to integrate such energy 

consumption into the energy efficiency, energy consor other energy descriptor. 

• DOE must consider the most current versions of IEC 

62301 and 62087. IEC Standard 62301, Household elappliances–Measurement of standby power, First Ed06, and IEC Standard 62087, Methods of measuremepower consumption of audio, video and related equiFirst Edition 2002-03

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Review of F&B test procedure:

The first four discussion items of the NOPR, 

III.B., III.C. and III.D, establish the followin

With some clarification, the EISA 2007 concepts and 

definitions are applicable and workable within the exiF&B test procedure

In the existing test procedure, fossil-fuel energy 

consumption is accounted for over a full-year cycle, tsatisfying EISA 2007 requirements for inclusion of fosstandby mode and off mode energy consumption. 

Electrical energy consumption in standby mode and 

mode is not accounted for in the current test proceduThis applies to both fossil fueled and electric furnaceboilers.

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Summary of Proposed Amendmen

NOPR Discussion item III.E

Add measurement provisions utilizing the IEC 

Standard 62301 to obtain power consumption standby mode and off mode. 

PSB and

POFF

Add new equation for annual standby mode a

mode energy use. 

Integrate annual standby mode and off mode 

use into the existing annual energy use equatother energy descriptors. 

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Summary of proposal (continued)

Annual accounting for standby mode and off 

energy

Key simplifying assumptions: Active mode can be 

approximated by burner operating hours (BOH). Nonseason can be estimated as the 4600 hours already ain the AFUE calculation.

Annual standby mode and off mode electrical energy 

consumption,

ESO, can be incorporated into the exist

procedure equations. 

ESO = ((PSB * (4160 - BOH)) + (POFF * 46

EAE = BOHSS(y

PPE +yIGPEIG+yBE)+

E

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Energy Conservation Standards

NOPR discussion item III.F

EISA requires:

1. Standby mode and off mode test procedure amendmenused to determine compliance with current standards2. After July 1, 2010 any final standard shall incorporate stand off mode energy use into a single amended or new sta3. If such incorporation is not feasible, a separate standard prescribed

The proposed amendments do not change the current 

metric, AFUE

The proposed amendments will allow a subsequent st

address standby mode and off mode energy consumpby an incorporated metric or separate standard 

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Technical Details of the Proposal

NOPR discussion items III.G through J

Before moving on to the technical details are there q

on the overall proposal’s concepts just presented?

NOPR items III. G through J provide supporting disc

for the technical aspects of the proposal.

The topics covered are: 

• Active hours approximated as burner operating hours • Active hours for electric furnaces • Details of the added measurement provisions• Use of the IEC procedures

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Active mode hours approximated by b

operating hours

NOPR Discussion item III.G., III.H.

Burner operating hours are a calculated result in the 

test procedure. BOH could be exactly active mode hthe burner itself. Most furnaces and boilers have muelectric auxiliaries. There can be some runtime diffeexample for circulating fans, because of time delays overruns.

Separate accounting of each auxiliaries' standby m

off mode is impractical. The potential accounting erassociated with “BOH = Active Mode” is insignifican

Active mode for electric furnaces and boilers can be 

estimated by including a calculation similar to BOH F&B electric consumption equations. 

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Details of added measurement provis

Discussion item III.I

New section is added to the F&B test procedure that require

measurement of standby and off mode wattage utilizing the 62301 standard. The new section provides that:- A separate measurement of off mode wattage is only needed if a difference with standby mode and off mode, otherwise a single measurement will serve as both standby and off mode wattage-The purpose of the measurement is to include all possible standand/or off mode wattage not just the standby and/or off mode of component.-Accuracy requirements of the IEC 62301, not those in the existiprocedure, are to apply when measuring the low wattages of staoff mode power (see explanation on next slide)

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Details of added measurement provis

Discussion item III.I (continued)

Accuracy differences of existing test proced

IEC standard:- ASHRAE 103- 1993 specifies that all electricity be measerror no greater than 1%. This specification is deemed athe range of active mode wattages encountered on furnacboilers- IEC 62301 specifies measurement of (standby) power swith an uncertainty of less than or equal to 2% at the 95% level and the resolution of the instrument shall be 0.01 W measurements of 10 W and below and 0.1 W for measureabove 10 W. The proposal maintains these provisions anthe ASHRAE standard are appropriate for the low wattagbe encountered in standby mode and off mode. 

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Proposed use of IEC Standard 623

NOPR Discussion item III.J

Other than the mentioned clarifications the IEC Stan

62301 is adopted without modification

DOE believes the IEC 62301 procedure is appropriate 

measuring the low wattage that would be encounteretesting furnaces and boilers. In reviewing the IEC prDOE sees no conflicts or difficulties for the F&B induwhen testing their products. 

DOE seeks comment on the adequacy and appropriateness of IEC Standard 62301 in general, and whether there is a need to modify or depart from the provisions in the IEC Standard 62301 with regard to residential furnaces and boilers. 

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Closing Remarks

• At this time, DOE welcomes any additional remark

questions from interested parties on the NOPR for and boilers.

DOE specifically invites comment on:

• Clarifying edits;• Use of the IEC 62301 standard • The proposed energy accounting• How to address standby mode and off mode energ

energy conservation standard.

Closing Remarks and Comments from Intere

Parties on the Proposed Test Procedure

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How to Submit Comments...

Public Meeting – Oral comments will be captured in the transcript 

part of the public record.

Written comments – NOPR comment period open until October 13

Reference docket #: EERE-2008-BT-STD-0013 and/or RIN #: 1904

Email: _rulemaking@ee.doe.govMail: Ms. Brenda Edwards

U.S. Department of EnergyBuilding Technologies Program, Mail stop EE-2JNOPR for ASHRAE Standard 90.1 EquipmentEERE-2008-BT-STD-00131000 Independence Avenue, SW.Washington DC, 20585-0121

Courier: Ms. Brenda Edwards

U.S. Department of EnergyBuilding Technologies Program950 L’Enfant Plaza, 6th FloorWashington, DC 20024

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Back-Up Slides

8.6 Measurement of electrical standby and off mod

8.6.1 Standby power. With all electrical compon

the furnace or boiler not activated, measure the stapower (PSB) in accordance with the procedures in (incorporated by reference, see §430.22). Utilize thand precision specifications in IEC Standard 62301 those in ASHRAE Standard 103 -1993. Measure thso that all possible standby mode wattage for the enappliance is recorded, not just the standby mode wsingle auxiliary.

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Back-up slide

8.6.2 Off mode power. If the unit is equipped with a sea

off switch or there is an expected difference between mode power and standby mode power, measure off power (POFF) in accordance with the standby power procedures in IEC 62301 (incorporated by reference, §430.22). Utilize the accuracy and precision specificIEC Standard 62301 in lieu of those in ASHRAE Stan-1993. Measure the wattage so that all possible off mwattage for the entire appliance is recorded, not just mode wattage of a single auxiliary. If there is no expdifference in off mode power and standby power, let PSB, in which case no separate measurement of off power is necessary.

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Back-up slideFor electric furnaces and boilers, 

BOH = 100(2080)(0.77)DHR/(Ein 3.412)(AF

where:100 = to accommodate AFUE in denominator expressed as a percent2,080 = as specified in 10.2.1 of this appendix0.77 = as specified in 10.2.1 of this appendixDHR = as defined in 10.2.1 of this appendix3.412 = conversion to express energy in terms of KBtu instead of kiloAFUE = as defined in 11.1 of ANSI/ASHRAE Standard 103-1993, (inco

reference, see §430.22) in percent, 

E in = Steady state electric rated power, in kilowatts, from section 9.3 

ANSI/ASHRAE Standard 103-1993.

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