-' 

## Tuesday

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## _- September 9, 1997

,,



# Part II _ _



# Department of

__ 

# _Energy

Office of Energy Efficiency and 

# p

- s 

### " Renewable Energy

10 CFR Part 430



## -- a 

## ^s Energy Conservation Program for 

# : | 

# : Consumer Products: Test Procedures for

%-- = 

## O eExternally Vented Refrigerators and

_____ _ 

## ERefrigerator-Freezers; Final Rule

4753547536 Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations

DEPARTMENT OF ENERGY concerns the testing aspect ofthis over the condenser/compressor ofa program. EPCA, §323, 42 U.S.C. 6293. refrigerator would reduce energy Office of Energy Efficiency and The purpose of thetest procedures isto consumption ofthe refrigerator. ESE Renewable Energy produce test results that measure energy explained thatthe existing test efficiency, energy use, water use (in the procedures address only a closed system 10 CFR Part430 case ofshowerheads, faucets, water without the possibility oftransfer of RIN 1904-AA93 closets and urinals), orestimated annual exterior air cooler than the ambient operating cost ofa covered product room temperature. Energy Conservation Program for during a representative average use While ESE's letter was submitted as a Consumer Products:Test Procedures cycle or period of use. The test petition for waiver, the Department for ExternallyVented Refrigeratorsand procedures shall not be unduly concluded that its waiver process was Refrigerator-Freezers burdensome to conduct. 42 U.S.C. not appropriate because waivers apply 6293(b)(3). One hundred and eighty to "basic models," and no models are AGENCY: Office ofEnergy Efficiency and days after a test procedure for a product currently being manufactured Renewable Energy, Department of is adopted, no manufacturer may make incorporating this invention, noris the Energy. representations withrespect toenergy invention being produced for ACTION: Final rule. use, efficiency orwateruse ofsuch retrofitting.Therefore, theDepartment SUMMARY: The Department ofEnergy product, or the cost ofenergy consumed published ESE's letter and issued a (Department orDOE) today promulgates by such product, except as reflected in Notice of Inquiry inviting public test procedures for measuringthe energy tests conducted according to the DOE comment on several issues relating to tconsumption ofan externally ented procedure. 42 U.S.C. 6293(c)(2). The externally vented refrigerators. 60 FR consumpn ofan e y v d Department, with assistance from the 37603, 37604 (uly 21, 1995). No public refrigerator and externally vented National Institute ofStandards and comments were received inresponse to refrigerator-freezer, a technological Technology, may amend orestablish this Notice ofInquiry. innovation c s ot coew test procedures, as appropriate, for On November 13, 1995, acting upon existing test procedures. Today's final new test procedures, as appropriate, for existing testprocedures. Todays final any covered product. theDepartment's suggestion, ESE rule does not change thetest procedures Test procedures promulgated by DOE submitted a draft of proposed applicable to refrigerator and appear at 10 CFR Part 430, Subpart B. amendments to the test procedures for refrigerator-freezer designswithout The "Uniform TestMethod for refrigerators and refrigerator-freezers. external venting. Measuring the Energy Consumption of TheDepartment referred this submittal EFFECTIVE DATE: October 9, 1997. Electric Refrigerators and Electric to the National Institute ofStandards
FOR FURTHER INFORMATION CONTACT: Refrigerator-Freezers" appears at andTechnology (NIST). NIST, the Appendix Al to Subpart B. Department and ESE representatives Michael G. Raymond, U.S. Department Section 323(e) ofthe Act requires extensively discussed the requirements

ofEnergy, Energy Efficiency and DOE to determine to what extent, ifany, for test procedures for externally vented Renewable Energy, Mail Station EE- a proposed test procedure would alter refrigerators and refrigerator-freezers. 43, Forrestal Building, 1000 the measured energy efficiency, On April 8, 1997, DOE published a Independence Avenue, SW, measured energy use ormeasured water Notice ofProposed Rulemaking (NOPR), Washington, D.C., 20585-0121, (202) use ofany covered product as to amend the test procedures for 586-9611 determined under the existing test refrigerators and refrigerator-freezers. 62 Eugene Margolis, Esq., U.S. Department procedure. IfDOE determines that an FR 16739. DOEproposed to add test

ofEnergy, Office of General Counsel, amended test procedure would alter the procedure amendments specific to Mail Station GC-72, Forrestal measured efficiency or measured use of externally vented refrigerators and Building, 1000 Independence Avenue, a covered product, DOE is required to externally vented refrigerator-freezers. SW, Washington, D.C. 20585-0103, amend the applicable energy Thecurrent test procedures for (202) 586-9507 conservation standard accordingly. In refrigerators and refrigerator-freezers,
SUPPLEMENTARY INFORMATION: determining the amended energy found at 10 CFR Part 430, Appendix Al conservation standard, DOE is required ofSubpart B, do not address testing of I. Introduction to measure the energy efficiency or externally vented refrigerators and
A.Authority energy use ofarepresentative sample of refrigerator-freezers. The existing test rt B f Tit I o Energ Pi covered products thatminimally procedures apply to a refrigerator Part B ofTitle III of theEnergy Policy standard The systemto which cool outside air cannot and Conservation Act of 1975, Public comply withthe existing standard. The system to which cooloutside air cannot Law 94-163, as amended, established average energy use ofthis representative be introduced for purposes ofheat Law 94-163 as amended etabsample, determined under the amended transfer. Externally vented refrigerators the Energy Conservation Program for test procedure, constitutes the amended would be designed to permit outside air ConsumeroieT Products other than standard. EPCA, §323(e)(2), 42U.S.C. to be introduced across the refrigerator's Automobiles (Program).' The products 6293(e)(2). condenser and compressor and, in some currently subject to this Program cases, throughout thewalls ofthe (referred to hereafter as "covered B. Background refrigerator. The introduction ofoutside products") include electric refrigerators On March 14, 1995, Edward Schulak air attemperatures lower than the and electric refrigerator-freezers. Equities, Inc. ("ESE") submitted a letter ambient room air temperature permits

Under the Act,the Program consists tothe Department regarding the more efficient heat transfer, potentially essentially ofthree parts: testing, inapplicability ofexisting test resulting in energy savings. labeling, and the Federal energy procedures in Appendix Al to The Department has therefore revised conservation standards. This final rule externally vented refrigerators. ESE the test procedures to include submitted a description ofan externally provisions tailored to measuring the Part B ofTitleII of Energy Policy and vented refrigerator from arecently energy consumption ofexternally Conservation Act, as amended, is referred to in this final rule as "EPCA" or the "Act" Part B of Title granted patent. ESE claimed that vented refrigerators and refrigeratorIIIis codified at 42 U.S.C. 6291-6309. allowing cooler outside air to be passed freezers. These provisions add to, ratherFederal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations 47537

than replace, the existing test amends the test procedures applicable consumption ofany exterior air fan that procedures, which remain fully to electric refrigerators and electric draws air to the refrigerator cabinet will applicable to both externally vented refrigerator-freezers (10 CFRPart 430, be included in the total energy vented refrigerators and refrigerator- Subpart B, Appendix Al), as follows: consumption measurements specified in freezers and refrigerators and 1.Definitions and applicability of section 5.2.1. refrigerator-freezers thatare not amended test procedures. The 2. Exterior air source. The Department externally vented. The amendments Department defines "externally vented recognizes that actual testing should provide a method for accurately refrigerator or refrigerator-freezer" as a take place under conditions ofvariable measuring the energy consumption of refrigerator orrefrigerator-freezer with exterior air temperatures and, therefore,

an enclosed, externally vented an enclosed condenser or anenclosed requires that prescribed test conditions refrigerator or refrigerator-freezer unit condenser/compressor compartment, include the provision ofan external air and take account ofdesign features (e.g., and a setofair ducts fortransferring source that provides air at adjustable enclosed condenser, outside air exterior air from outside the building temperature and pressure capabilities conduits, dampers) peculiar to an envelope into, through, and out ofthe (section 2.6). Thetest procedures externally vented refrigerator or refrigerator orrefrigerator-freezer prescribe the location oftemperature refrigerator-freezer that circulates condenser or condenser/compressor sensors for measuring the air outside air around its condenser. With compartment (section 1.12). Energy temperature at the inlet to the these amendments, the test procedures consumption savings from an externally condenser/compressor compartment provide abasis for making comparable vented refrigerator or refrigerator-freezer (s e c tio n 26.2). Air temperature will also measurements ofenergy consumption should be achievable for outside air be measured atthe exterior air source. forboth externally vented ventedtemperatures between 60 °F and 80 °F Temperature measurements are to be refrigerators and refrigerator-freezers Above 80 °F outside air maybe warmermade atprescribed intervals. and refrigerators and refrigerator- Above3. Air ducts. Externally vented freezers that are notexternally vented than a mbie n t roo m airmaking h e a t refrigerators and refrigerator/freezers More information about these test t ra n sf er n t h e w ro n g direction for depend upon air ducts to transfer procedure amendments may be found ine gy savings. Below 60 F, outsldealr exterior air to therefrigerator cabinet. theNOPR. 62 FR 16739 (April 8, 1997). may too cool for optimal operation of Rather than specifying the length,

Today's rule amends the testthe unit. Theamendments to the test diameter, shape and material ofthe procedures for electric refrigerators and procedures are generally predicated duct, the Department specifies air electric refrigerator-freezers appearing upon a design that permits the pressure requirements as auniform test in 10 CFR Part 430, Subpart B, exclusion and/or mixingofoutside air condition (section 2.6.3). Specifically, Appendix Al by: (1)adding adefinition that is either above 80°For below 60 the test procedures require exterior air ofexternally vented refrigerators and F. (In the case thatthe mixing control pressure at the inlet tothe refrigerator refrigerator-freezers to which the is not able to maintain an inlet unitbe maintained at anegative revisions are applicable, (2) prescribing temperature of60 'F, section 5.4.2.4 is pressure of0.20"± 0.05" water column test conditions for externally vented invoked, and energy performance with (62 Pa± 12.5 Pa). The test procedures refrigerators and refrigerator-freezers, (3) inlet temperatures of 50 °F and 30 °F are also specify location distances for the specifying energy consumption measured.) Accordingly, the pressure sensors, relativeto theexterior measurement tests for externally vented amendments to the test procedures will air source (i.e., the inlet to the building refrigerators and refrigerator-freezers, apply only under conditions where the envelope) and to the condenser inlet. and (4) including calculation methods externally vented refrigerator or 4. Applicability ofgeneral test method for derivingresults from test refrigerator-freezer design is capable of conditions. The amendments to thetest measurements. mixing the exterior air drawn in from procedures are not intended to supplant

These test procedure amendments outside the building envelope with the existing test methods applicable to all apply only tothis product design and ambient roomair. The modification other refrigerators and refrigeratordo not apply to existing product designs includes thermostatically controlled freezers. Accordingly, the amendments of refrigerators and refrigerator-freezers dampers or controls that: (1)enable the provide that, except asexpressly without this feature. Existing test proper mixing ofoutside and ambient modified, the test conditions and procedures for non-externally vented room air when the outside air specifications included in the existing refrigerators and refrigerator-freezers temperature is lower than 60 °F, and (2) test procedures also apply to externally remain unchanged. The energy exclude outside air warmer than 80 °F, vented refrigerators and refrigeratorconservation standards for refrigerators or warmer than room air temperature freezers (section 5.4). and refrigerator-freezers are unaffected (section 1.12). Externally vented units 5.Energy consumption correction by the adoption or useof thenew test could have temperature controls that factorfor test measurements. The procedures because the new test exclude outside aireither ata pre-set Department prescribes aseries of procedure amendments do not apply to temperature no lowerthan 80 °F or formulas for determining energy any refrigerator or refrigerator-freezer when the outside airtemperature consumption from test measurements. that is currently manufactured. exceeds the ambient roomair First,the Department recognizes that temperature (section 1.12). The test energy consumption ofany refrigerator II. Discussion procedures require thatprior to will be different with and without door

Inresponse to the April 8, 1997, conducting energy consumption tests, openings. Under the existing test NOPR, theDepartment received one the operability ofthermostatic controls procedure, refrigerators are tested at 90 comment, which was from Mark L. be verified (section 5.4.1). All tests must °Fwithout door openings to simulate Perlis, counsel to ESE, urging the generally be conducted withthe the energy consumption they would adoption ofthe test procedures in the thermostatic controls operable. A have atnormal room temperature with NOPR. The Department believes it is special rule is provided for testing door openings. Normal room appropriate to proceed to a final rule energy consumption when mixing temperature for the refrigerator test promulgating the test procedures as controls do not operate properly procedure is considered to be 80 °F, the proposed. The Department today (section 5.4.2.4). The energy typical temperature ofthe ambient air47538 Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations

surrounding the refrigerator's Region I. Externally vented refrigerators a testing procedure for a new design condenser. An externally vented need only betested at 90 °F and 60 °F, feature ofrefrigerators and refrigeratorrefrigerator will show an artificially low and from such measurements, freezers. DOE accordingly certifies that energy consumption compared to an application ofthe correction factor, and this final rule will nothave a significant unvented refrigerator when tested at90 application ofthe energy profile economic impact on a substantial °F room air temperature, because 90 °F equation, the unit's average per cycle number ofsmall entities and that is warmer than normal room energy consumption can be determined preparation ofa regulatory flexibility temperature. The Department therefore for the nation as awhole and for each analysis is not warranted. requires calculation ofa correction ofthe fourregions ofthe country.

. " As t factor for each basic model of externally 7. Reporting requirements. Assessment eview vented refrigerator. The correction factor Refrigerators and refrigerator-freezers Ithas been determined pursuant to is the ratio of the energyconsumption are required to report annual energy Executive Order 12630 (52 FR 8859, ofan externally vented refrigerator (with consumption. Forexternally vented March 18, 1988) thatthis final rule will external venting disabled) at90 °F inlet products, the annual energy not result in any takings which might air temperature to the energy consumption will depend on climate. require compensation under theFifth consumption ofthe unit at 80 °F inlet The annual energy consumption Amendment to the United States air temperature (sections 5.4.2.1 and reported for externally vented products Constitution. 6.3.1). shall be the national average annual V. F r

6. Energy consumption test energy use. Separate reporting of erasm ev measurements and calculations. Based regional energy use is not required. Executive Order 12612 (52 FR41685,

on analysis by NIST and itsderivation

, October 30, 1987) requires that ofan algebraic equation for determining I R e v l e w Under the Nationalregulations orrules be reviewed for any energy consumption overa range of Environmental Policy Act of 1969 substantial direct effects on States, on outside air temperatures, the In this rule, theDepartment therelationship between the Federal Department has determined that test promulgates amendments to the test Government and the States, or on the measurements of energy consumption procedures for refrigerators and distribution ofpower and need be taken at only two outside air refrigerator-freezers to include responsibilities among various levels of temperatures, 90 °F and 60 °F (sections externally vented refrigerators and Government. Ifthere are sufficient 5.4.2.2 and 5.4.2.3). Ifthe outside air refrigerator-freezers. The Department substantial direct effects, the Executive temperature is not in this range, mixing has determined that this rule is covered Order 12612 requires the preparation of controls and dampers will keep the under the Categorical Exclusion found aFederalism assessment to be used in condenser inlettemperature within the at paragraph A.5 ofAppendix A to decisions by senior policy makers in range. Accordingly, theDepartment Subpart D, 10 CFR Part 1021, which promulgating or implementing the prescribes an energy profile equation applies to the amendment ofan existing regulation. that will allow forthe interpolation of rule that does not change the This final rule will not alter the energy consumption at outside air environmental effect ofthe rule. distribution ofauthority and temperatures within this range (section Implementation ofthis final rule will responsibility to regulate in this area. 6.3.4). The parameters ofthe energy not affect the quality or distribution of This rule will only revise a currently profile equation are determined for each energy usage and therefore will not applicable DOE test procedure to basic model ofexternally vented result in any environmental impacts. accommodate a technological refrigerator that is tested, based on the Accordingly, neither an environmental development inthe manufacture of measured energy consumption during assessment nor an environmental refrigerators and refrigerator-freezers. testing at 90 °F and 60 °F. impact statement is required. Accordingly, DOE has determined that

Once the parameters ofthe energy preparation ofa federalism assessment profile equation are determined, the test IV. Regulatory Review is unnecessary. procedures provide a basis for Today's final rule has been calculating energy consumption at determined not to be a "significant VIII. Paperwork Reduction Act Review various temperatures. Because regulatory action" under Executive This rule contains no new collections temperatures vary across the country, Order 12866, "Regulatory Planning and of information under the Paperwork throughout a day, and throughout the Review," (58 FR 51735, October 4, Reduction Act, 44U.S.C. 3501 et seq. year, the testprocedures specify an 1993). Accordingly, today's action was IX Review Under Unfunded Mandates energy consumption formula that notsubject to review under the Refom tof 199 determines a unit's total energy Executive Order by the Office ofer Act 1 consumption based on weighted Information and Regulatory Affairs. Section 202 ofthe Unfunded averaging ofthe unit's energy Mandates Reform Act of 1995 consumption at different exterior air V Regulatory Flexibility Review("Unfunded Mandates Act") requires temperatures. The testprocedures This rule has been reviewed under the thatthe Department prepare abudgetary provide weighting factors for a national Regulatory Flexibility Act, Pub. L. 96- impact statement before promulgating a average energy consumption (section 354 (42 U.S.C. 601-612) which requires rule that includes a Federal mandate 6.3.6) and weighting factors for four preparation ofa regulatory flexibility that may result in expenditure by state, different regions ofthe country, which analysis for any regulation thatwill local, and tribal governments, in the

are identified on a map.This procedure have a significant economic impact on aggregate, orby the private sector, of

was based on the test procedure forheat a substantial number ofsmall entities. $100 million ormore in any one year. pumps, for which energy savings are This rule would not have significant The budgetary impact statement must also a function ofclimate. The regional economic impact on manufacturers of include: (1)identification of the Federal map is the same asthat used in the heat externally vented refrigerators and law under which the rule is pump test procedure, except Regions I refrigerator-freezers (there are presently promulgated: (2) aqualitative and and II from the heat pump test no such manufacturers). This rule quantitative assessment ofanticipated procedure are combined and called modifies the testing methods to provide costs and benefits ofthe FederalFederal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations 47539

mandate and an analysis ofthe extent to Executive Order and determined that, to kilowatt-hour asprovided by the which such costs to state, local, and the extent permitted by law, they meet Secretary, the resulting product then tribal governments may bepaid with the requirements ofthose standards. being rounded offto the nearest dollar Federal financial assistance; (3) if

.. per year. feasible, estimates ofthe future X Congressional Notficaton (8) Theestimated regional annual compliance costs and of any Consistentwith the Small Business operating cost forexternally vented disproportionate budgetary effects the Regulatory Enforcement Act of 1996, electric refrigerators and externally mandate has on particular regions, DOE will submit to Congress a report vented electric refrigerator-freezers with communities, non-Federal units of regarding the issuance oftoday's final an anti-sweat heater switch shallbe the government, orsectors ofthe economy; rule prior to theeffective date setforth product ofthefollowing three factors: (4) iffeasible, estimates oftheeffect on at the outset ofthis notice. The report (i) The representative average-use the national economy; and (5) a will note the Office of Management and cycle of365 cycles peryear, description of the Department's prior Budget's determination that this rule (ii) Halfthe sum ofthe average perconsultation with elected does not constitute a "major rule" under cycle energy consumption for the representatives ofstate, local, and tribal thatAct. 5U.S.C. 801, 804. standard cycle and the regional average governments and a summary and ListofSubjects in 10 R Part430 per-cycle energy consumption for a test evaluation of the comments and cyclewith the anti-sweat heater switch

concerns presented. Administrative practice and in the position set at the factoryjust

The Department hasdetermined that procedure, Energy conservation, priorto shipping, each in kilowatt-hours this action does not include a Federal Household appliances. per cycle, determined according to 6.3.7 mandate thatmay result in estimated IssuedinWashington, D.C., on August 1, ofappendix Al ofthis subpart, and costs of $100 million ormore to state, 1997. (iii) The representative average unit local or to tribal governments in the JosephJ.Romm, cost ofelectricity in dollars per aggregate or to the private sector. SecretaryEner iciency kilowatt-hour as provided by the Therefore, the requirements of Sections ngAssistantSecretary, EnergyEfiency Therefore the requirements ofSections andRenewableEnergy. Secretary, the resulting product then 203 and 204 ofthe Unfunded Mandates beingrounded offto the nearest dollar Act do not apply to this action. orthe reasons set forth in the preamble, part 430 ofchapter II oftitle per year. X. Review UnderExecutive Order 10, Code ofFederal Regulations is (9) The estimated regional annual 12988, "Civil Justice Reform" amended as follows:operating cost for anyother specified

With respect to the review ofexisting cycle for externally vented electric regulations and the promulgation of PART 430-ENERGY CONSERVATION refrigerators and externally vented new regulations, Section 3(a) of PROGRAM FOR CONSUMER electric refrigerator-freezers shall be the Executive Order 12988, "Civil Justice PRODUCTS product of the following three factors: Reform," 61 FR 4729 (February 7, 1996), 1.The authority citation for part 430 cycle of365 cycles peryear, imposes on executive agencies the continues to read asfollows: (ii)The regional average per-cycle general dutyto adhere tothe following requirements: (1) eliminate drafting Authority:42 U.S.C. 6291-6309. energy consumption for the specified

errors and ambiguity; (2) write 2.Section 430.23(a) is amended by le,tinkilowatt-hours per cycle, regulations to minimize litigation; and adding the parenthetical phrase "(6.3.6 determned according to 67 of (3) provide aclear legal standard for for externally vented units)" after appendix Al ofthis subpart, and affected conduct ratherthan ageneral "determined according to 6.2" in the (iii) The representative average unit standard and promote simplification following locations: paragraph (a)(l)(ii) cost ofelectricity n dollars per and burden reduction. With regard to paragraph (a)(2)(ii); paragraph (a)(3)(ii); kilowatt-hour as provided by the the review required by Section 3(a), paragraph (a)(4)(i)(B); paragraph Secretary, the resulting product then Section 3(b) of the Executive Order (a)(4)(ii)(B); paragraph (a)(5). being rounded offto thenearest dollar specifically requires that Executive 3. Section 430.23(a) is further per year. agencies make every reasonable effort to amended by addingparagraphs (a)(7), * *
ensure that the regulation: (1)clearly (a)(8), and (a)(9) to read asfollows: 4. Section 1ofAppendix Al to specifies the preemptive effect, ifany; subpart B is amended by addingthe (2) clearly specifies any effect on §430.23 Test proceduresformeasuresof following definition 1.12: existing Federal law or regulation; (3) energy consumption.Appendix A to SubpartB ofPart430- provide aclear legal standard for (a) * * * Appendix Al to SubpartB ofPart430 affected conduct while promoting (7) Theestimated regional annual Uniform Test Method for Measuring the simplification and burden reduction; (4) operating cost for externally vented Energ ons ption ofEtric specifies the retroactive effect, ifany; (5) electric refrigerators and externallyrs lectic Refrigeratoradequately defines key terms; and (6) vented electric refrigerator-freezers addresses other important issues without an anti-sweat heater switch 1. Definitions affecting clarity and general shall be the product ofthe following * * * * * draftsmanship under any guidelines three factors: 1.12 "Externally vented refrigerator or issued by the Attorney General. Section (i)The representative average-use refrigerator-freezer" meansan electric 3(c) ofthe Executive Order requires cycle of365 cycles per year, refrigerator orelectric refrigerator-freezer Executive agencies toreview regulations (ii)The regional average per-cycle that: has anenclosed condenser oran in light ofapplicable standards Section energy consumption for the standard enclosed condenser/compressor 3(a) and Section 3(b) to determine cycle in kilowatt-hours per cycle, compartment and a set ofairducts for transferring the exterior air from outside the whether they are met or it is determined according to 6.3.7 of building envelope into, through and out of unreasonable to meet one or more of appendix Al ofthis subpart and therefrigerator or refrigerator-freezer cabinet: them. DOE reviewed today's rulemaking (iii)The representative average unit is capable ofmixing exterior airwith the under the standards ofSection 3of the cost ofelectricity in dollars per room air before discharging into, through,47540 Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations

and out ofthe condenser or condenser/ measurements for theexternally vented consumption measurements for the
compressor compartment; includes refrigerator or refrigerator-freezer shall be externally vented refrigerator or refrigeratorthermostatically controlled dampers or made in accordance with the requirements of freezer shall be calculated in accordance with controls that enable the mixing ofthe exterior other sections ofthis appendix, except as the requirements ofthis Appendix, as and room airat low outdoor temperatures, modified in this section 5.4 orother sections modified in sections 6.3.1-6.3.7. and the exclusion ofexterior airwhen the expressly applicable to externally vented 6.3.1 Correction factor. A correction outdoor air temperature is above 80 "For the refrigerators or refrigerator-freezers. factor, K, shall be calculated as:

room airtemperature; and may have a 5.4.1 Operability of thermostatic and K = ecw/ecgo thermostatically actuated exterior air fan. mixing ofair controls. Prior to conducting 5. Section 2 ofAppendix Al is energy consumption tests, the operability of where ec9oand ecst

-the energy 5. Section 2 ofAppendix Al isthermostatic controls thatpermit the mixing consumption test results as determined amended by adding the following new of under 5.4.2.1. of exterior and ambient air when exterior air sections 2.6 through 2.6.3: temperatures are less than 60 F must be 6.3.2 Combining test results of different 2. Test Conditions verified. Theoperability of such controls settings of compartment temperature 2. TestConditions shall be verified by operating the unit under controls. For a given setting ofthe anti-sweat ambient airtemperature of90 °F and exterior heater, follow the calculation procedures of 2.6 Exterior airfor externally vented airtemperature of45 °F. Ifthe inlet air 62 to combine the test results for energy refrigerator orrefrigerator-freezer. Anexterior enteringthe condenser or condenser/ consumption ofthe unit at different air source shall be provided with adjustable compressor compartment is maintained at 60 temperature control settings for each temperature and pressure capabilities. The oF, plus orminus three degrees, energy condenser inlet airtemperature tested under exterior air temperature shall be adjustable consumption ofthe unit shall be measured 5.4.2.2, 5.4.2.3, and 5.4.2.4, where applicable, from 35±1 "F (1.7±0.6 °C) to 90±1 °F (32.2+0.6 under 5.4.2.2 and 5.4.2.3. Ifthe inlet air (ego)i, (eo)i, (eso),,and (e3o)i. Thecombined "C). entering the condenser orcondenser/ values are Ego, E~O, c5O, and 30o. where 2.6.1 Air duct.The exterior air shall pass compressor compartment is not maintained applicable, in kWh/day. fromthe exterior airsource to the test unit at 60 °F, plus or minus three degrees, energy 6.3.3 Energy consumption corrections. through an insulated air duct. consumption ofthe unit shall also be For a given setting ofthe anti-sweat heater,

2.6.2 Air temperature measurement. The measured under 5.4.2.4. the energy consumptions £9o, eo. 5so, and £30 airtemperature entering the condenser or 5.4.2 Energy consumption tests. calculated in 6.3.2 shall be adjusted by condenser/compressor compartment shallbe 5.4.2.1 Correction factor test. To enable multiplying the correction factor Kto obtain maintained to ±3 "F (1.7 "C) duringthe calculation ofa correction factor, K,two full the corrected energy consumptions per day, stabilization and testperiods and shall be cycle tests shall be conducted to measure in kWh/day: measured at the inlet point ofthe condenser energy consumption ofthe unit with air E 9 0= KxEgo,
orcondenser/compressor compartment mixing controls disabled and the condenser Eo 6 = K xeo ("condenser inlet"). Temperature inlet air temperatures set at 90 "F (32.2 "C) E5o = Kx Eo,and measurements shall be taken from at least and 80 "F (26.7 °C). Both tests shall be E 3 0 = Kx 30 three temperature sensors orone sensor per conducted with all compartment temperature where, 4 square inches ofthe air duct cross sectional controls set at the positionmidway between Kis determined under section 6.3.1, and area, whichever is greater, and shall be their warmest andcoldest settings and thed 1,and averaged. For a unit that has a condenser air anti-sweat heater switch off. Recordthe e

, e50o and £3( are determined under fan, a minimum ofthree temperature sensors energy consumptions ecgo and ec8o.in kWh/ section 6.3.2.

at the condenser fan discharge shall be day. 6.3.4 Energy profile equation. For a given required. Temperature sensors shall be 5.4.2.2 Energy consumption at 90 "F.The setting ofthe anti-sweat heater, the energy arranged to be at the centers of equally unit shall be tested at90 °F (32.2 "C) exterior consumption Ex, in kWh/day, at a specific divided cross sectional areas. The exterior air air temperature to record the energy exterior air temperature between 80 "F (26.7 temperature, at its source, shall be measured consumptions (ego), in kWh/day. For a given "C) and 60 "F (26.7 °C) shall be calculated by and maintained to±1 "F (0.6°C) during the setting of the anti-sweat heater, i corresponds the following equation:
test period. The temperature measuring to each of the two states of the compartment Ex = a +bTx, devices shall have anerror not greater than temperature control positions.where ±0.5 "F (±0.3"C). Measurements ofthe air 5.4.2.3 Energy consumption at 60 "F. The temperature during the test period shall be unit shall be tested at 60 "F (26.7 "C) exterior Tx = exterior air temperature in 'F; taken atregular intervals not to exceed four air a =3E6 o- 2Ego, in kWh/day; minutes. consumptions (ego)i in kWh/day. For a given b = (EFo- Ea)/30, in kWh/day per "F.

2.6.3 Exterior air staticpressure. The setting of the anti-sweat heater, icorresponds 6.3.5 Energy consumption at 80 "F (26.7 exterior air static pressure atthe inlet point to each ofthe two states ofthe compartment °C), 75 °F (23.9 "C) and 65 "F (18.3 °C). For ofthe unitshall be adjusted to maintain a temperature control positions, agiven setting ofthe anti-sweat heater, negative pressure of0.20"±+0.05" water 5.4.2.4 Energy consumption if mixing calculate the energy consumptions at 80 °F column (62 Pa±12.5 Pa) for all air flow rates controls do not operate properly. Ifthe (26.7 "C), 75 "F (23.9 "C) and 65 °F (18.3 "C) supplied to the unit.The pressure sensor operability oftemperature and mixing exterior airtemperatures, Eso, E75 and E65. shall be located on astraight duct with a controls has not been verified asrequired respectively, in kWh/day, using the equation distance ofat least 7.5 times the diameter of under 5.4.1, the unit shall be tested at 50 "F in 6.3.4. the duct upstream and a distance ofat least (10.0 "C) and 30 "F (- 1.1 "C) exterior air 6.3.6 National average per cycle energy 3 times thediameter ofthe duct downstream, temperatures to record the energy consumption. For a given setting ofthe antiThere shall be four static pressure taps at 90" consumptions (es-o)i and (e 30 o). For agiven sweat heater, calculate the national average angles apart. The four pressures shall be setting of the anti-sweat heater, icorresponds energy consumption, EN, in kWh/day, using averaged by interconnecting the four pressure to each ofthe two states ofthe compartment one of the following equations: taps. The air pressure measuring instrument temperature controlpositions. EN = 0.523 x E6o +0.165 xE65 +0.181 x E 75 shall have an error not greater than 0.01" 7. Section 6 ofAppendix Al is +0.131 xEo, for units not tested under
water column (2.5 Pa). amended by adding the following new 5.4.2.4,

6. Section 5 ofAppendix Al issections 6.3 through 6.3.7, table A and EN = 0.257 xE 3 +0.266 xE., +0.165 x E 3. amended by adding the following new figure 1: tested under 5.4.2.4, sections 5.4 through 5.4.2.4: 6. Calculation ofDerivedResults FromTest where, 5. Test Measurements Measurements E 30,Eo, and E 6 0 are defined in 6.3.3,

* * * * * * * * * * E65, E75, and Ego are defined in 6.3.5, and

5.4 Externally vented refrigerator or 6.3 Externally vented refrigerator or the coefficients areweather associated refrigerator-freezer units. All test refrigerator-freezers. Per-cycle energy weighting factors.Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations 47541

6.3.7 Regional average per cycle energy the following equations and the coefficients where: consumption. If regional average per cycle in the table A: E 3o,E 50,and E60are defined in 6.3.3, energy consumption is required to be ER = a, x Eo 6 +c xE 65 +d xE75 +ex E 8O, E 6 5, E75,and E8oare defined in 6.3.5, and calculated, for a given setting of the anti- for a unit thatis not required to be tested a

,, a, b, c, d e are weather associated sweat heater, calculate the regional average under5.4.2.4, weighting factors forthe Regions, as per cycle energy consumption, ER, in kWh/ ER = a xE30 +b x E 5o+c XE 65 +d xE 75 specified in Table A: day, for the regions in figure 1using one of +e x E8o,for a unittested under 5.4.2.4,

TABLE A.-COEFFICIENTS FOR CALCULATING REGIONAL AVERAGE PER CYCLE ENERGY CONSUMPTION [Weighting Factors]

Regions a, a b c d e

I

..................................................................................................................................... 0.282 0.039 0.244 0.194 0.326 0.198 II

........................................................................................................................................ 0.486 0.194 0.293 0.191 0.193 0.129 III

....................................................................................................................................... 0.584 0.302 0.282 0.178 0.159 0.079 IV

....................................................................................................................................... 0.664 0.420 0.244 0.161 0.121 0.055

BILLING CODE 6450-01-P



## FIGURE 1. WeatherRegions fortheUnited States

IV IV 

# I

wO NJ



## Alaska Region IV

Hawaii Region I

§430.62 [Amended]

8. Section 430.62(a)(2) is amended by inserting after "(for refrigerators, refrigerator-freezers, and freezers)," in the first sentence, the following: "the national average annual energy use and adjusted volume (for externally vented refrigerators and refrigerator-freezers),".

[FR Doc. 97-22379 Filed 9-08-97; 8:45 am]

BILLINGCODE 6450-01-C