# I

t Office 

### of Conservation and Renewable 

### Energy
[Case No. CAC-001l 

### 5587

Energy Conservation Program for Consumer Products; Petition for Waiver of Central AIr Conditioner 

### Tesl Procedures Ff9Jn Carrier Corporation

AQENCY: 

### Conservation 

### and Renewable Energy Office, DOE. 

## sUlDlAJn'i Today's 

### notiiepublishes a "Petitionfor Waiver" from Carrier Corporation (Carrier) of Syracuse. New York. requesting a waiver fromthe existiItsDepartment ofEnergy (DOE) test procedures for central air conditioners. Carrier manufactures residential and commercial air conditioning appliances.

### The petition requests DOE to 

### grant relieffrom the test procedure relating to the compressor speed specification for Carrier's 38EV j38QV 

### model series central air conditioners (heat pumps). Carrier seeks to 

### test using 

### intermediate compressor speeds instead of the single

.speedspecified. Carrier requests the test and calculation methods ofAppendix B 

### to the Air 

### Conditioning and Refrigeration Institute Standard 210/ 24G--84. with modifications. be substituted for the DOE test procedures for central air 

### conditioners. DOE is soliciting comments. 

### data. and information respecting the petition.

DATE: 

### DOE will accept comments. data and information not 

### later than**~ch** 17. 

### 1986.
ADDRESSES: 

### Written comments and statements shall 

### be sent to Michael McCabe at 

### the address indicated in the next section. Please 

### label both the 

### envetope and 

### the comment with the following; Case No. CAC-001.

FOR FURTHER INFORMATION CONTACT: 

### Michael 

## J. McCabe. 

## U.s. Department of

Energy, Office of Conservation and Renewable Energy, Mail Station. CE

### 132, Forrestal Building, 1000 

### Independence Avenue. Washington. DC 20585. (202) 252-9127 

### Eugene Margolis. Esq.• U.S. 

### Department

ofEnergy. Office of General Counsel. Mail Station, GC-12. Forrestal Building. 1000 Independence Avenue. SW., Washington, DC 20585. {202} 252-9513.


### Background

The Energy ConservationProgram for Consumer Products {other than automobiles) was established pursuant to the Energy Policy and Conservation Act {EPCA). Pub. L. 94-163. 89 Stat. 917.

as amended by 

### the National Energy Conservation Policy Act [NECPA). Pub.

### 5588 

## Federal Register 

# I Vol. 51, No. 31 

# I Friday, February'14, 1988:/ Notices

• 95-619, 92 Stat. 3266. which requires

JE to prescribe standardizedtest

- procedures to measure the energy consumption ofcertain consumer products. including central air conditioners. The intent ofthe test procedures is to provide a comparable

measure ofenergy consumption that will assist consumers in making purchasing decisions. These test procedures appear at 10 CFR Part 430, Subpart B.

DOE has amended the prescribed test procedures by adding 10 CFR 430.27, Petitions for Waiver, to allow the Assistant Secretary for Conservation: and Renewable Energy temporarily to waive test procedures for a particular basic model. 45 

### FR 64108 

### (September 26, 1980). Waivers may be granted when

one or more design characteristics 

### ofa

. basic model either prevent testing ofthe

basic model according to the prescribed test procedures, or lead to results so unrepresentative of the model's true energy consumption as to provide materially inaccurate comparative data. Waivers generally remain in effect until final test procedure amendments become effective, resolving the pl'oblem that is the subject ofthe waiver.

Carrier's petition seeks a waiver from the DOE test provisions that require

.**·~'1ting** 

### at a single compressor speed. tead. Carrier requests the allowance
01 

### test and calculation procedures which incorporate test data for system operation at intermediate speeds. Specifically. Carrier requests allowance to use Appendix B ofthe Air 

### Conditioning and Refrigeration Institute (ARl) Standard 210/240-&4 with amendments. The amendments to ARI Standard 210/240-&4 requested by Carrier include revisions to cycling per-iod. intermediate steady state test points. demand defrost credit and indoor air flow rate.

Pursuant to paragraph (b) of 10 CFR 430.27, DOE is hereby publishing the "Petition for Waiver" in its entirety. The petition contains no confidential information. DOE solicits comments. data, and information respecting the petition.

Issued in Washing(on, DC, January 31. 1986. Donna 

### R. Fitzpatrick. AssistantSecretary. Conservation and RenewableEnergy. December 4. 1985. Assistance Secretary for Conservation and Renewable Energy, United States Department of Energy. 1()()(} Independence Avenue. Sw., Washington. DC20585 .letition for Waiver**~entleman:** This is a petition for waiver which is being submitted pursuant to Title 10 CFR 430.27

..Waiver is requested from Test 

# •

PIvcedures for Central Air Conditioners.

. Including Heat Pumps found in Appendix M to Subpart B ofPart430.Waiver is requested for variable speed pl'Qduct model heat pumps and cooling units..

..

Models in the variable speed product line employ variable speed motors to drive the compressor and the indoor blower. The ' motors are controlled by a microprocessor and can be operated over a wide range 

### of incrementalvalues of speed. An "intelligent"

room thermostat is linked to the microprocessor controller in the equipment The cycling of the compressor is controlled from within the unit rather than directly by the thermostat. which leads to significantly different cyclic patterns when compared to conventional single or two speed equipment seasonal efficiency ratings by 3% for cooling and'2%for heating. Test data are available to support these efficiency rating improvements. This change in the cyclic testpattem is reqUired to correctly**acco~t** for the ' . improved cyclic performance ofthe variable speed equipment.

_ ' '

York demonstrated in the Application for Exception for their ENMOD system (Case 8EE-1338, January 13, 1981) that the test, procedures for two speed systems in 430.24 do not properly represent the seasonal performance ofvariable capacity systems. York was allowed·to make use ofa modified test and rating procedure which incorPorated' test data for system operation atintermediate speeds. Since then, 

### ARI has published a rating procedure for air conditinners with variable speed compressors in Appendix B of 

### ARI Standard 12O/240-84._The 

### ARI rating, procedure is very similar to the method york

was allowed to usein rating the ENMOD system, and a high level ofconsistency is maintained between 

### ARI 210/240-&1 and 430.24.

This petition is a'request for authorizatipn to substitute the test and calculation methods. in Appendix 8 ofStandard 210/240-84 for the test and calculation methods in Appendix M to Subpart ofPart 43(}; In addition, it is requested that several modifications to Appendix B of 210/240-84 be included in the waiver to allow fair and proper

. representation ofthe unique operating characteristics ofthe equipment. The requested amendments are modifications are
as follows:

1. It is requested that.the cyclic test pattern of6 minutes "on" and 24minutes "off" 

### for

. compressor operation during the cyclic heating and cyclic cooling tests be replaced by a test pattern of 12 minutes "on" and48. minutes "ofr' for compressor operation 

### (ARI Standard 210/240-84, AppendixB. Table 81; page 15. footnote 4).

It is further requested that the capacity integration period be changed from 8**minu~es** to 14 minutes 

### (ARI Standard 210/240-84;

. Section 5.1.3.1). The microprpcessor control,' ofthe equipment has a minimumrnn time.of

. 12 minutes at the minimum speed, and 

### Rbi:·'·
not possible for 

## an "on" perio'd of·leslt.thq'.,.. minutes to occur innormal operation of

# tlllie'- equipment Since the capacity ofthe 

### "ariab\t.: speed equipment atminimum speed is

.....'

.. approximately halfthat ofa conventional. ; single speed-unit, a minimUm rnn-time**~U** minutes has theeffeet ofmamlaining;the;·;;

same magnitude ofinterior**temp~wre** ..,('lr'; . fluctuations during cyclic operatioll**aS~'.tc~** which occurwith a single speed

### unit With

.. "" minimum rnn time 

## ot 6 minutes.**The'effe~lJJ** changing the cyclic test pattern froni 

### JI..•• <- ..•. \ minutes "on", 24 minutes

### "ofr·:tol.a.~~:!.[ "on", 48 minutes "ofr'ls to imphWetJiiil**;./~,.** 2.-The Intermediate speed steadystate test pointforcooling is speCified by temperature conditions and equipment capacity 

### (ARI Standard 210/240-84. Appendix 8, Table 81. page 15). This requires aniterative test to determine the correct speed for the

.,. equipment in orderto achieve the spe¢ied capacity. No tolerances 'are provided, and given the discrete nature of speed settings for the equipment, it may be impossible to exactly match the required capacity. This test is nnnecessariiy burdensome.

Itis requested that the test be specified by temperature conditions and speed, with the temperature conditions nnchanged and the speed speCified only 

### as a value between the minimum andmaximum values for the equipment. The capacityandpower for this intermediate speed point can then be corrected with respect to outdoor dry bulb temperature using the minimum speed and maximUm speed test points to find the outdoor temperature at which the equipment capacity matches the load line. 

### The temperature. capacity and power values for this intersectionare then used in the 

### ARI interpolation equations for determining SEER;: 

### The means for correcting the intermediate

. speed point to de,termine the inttmlection with theloadline is included 

### lQ! Appendix A to this w£!.iver request. . ,

3. Thereis currently no intermediate speed test pointforevaluation 

### ofthe heating seasonal performance factor, As a result. the 

### ARI method has been found to underpredict the HSPF by as much as 2% when compared to more detailed bin calculations incorporating intermediate speed data. The frost accumulation testpo'int, which-is rnn at maximU!l1 speed isnot wen matched to the load line and as a result hasalmost no influence on the HSPF value 

### fARI Standard 

### 210{210-84. Appendix

### B, Table 81, page 15}.

Itis prop.osed that the frost accumulation test point be anintermediate speedpoint. The temperature conditions will remain the same,but the speed 

### will

## be specified as a value between the minimum and maximum speeds for 

### lb.equipment.Thli capacity 

### and power fortl¥a**lnterme~ate** speedpoint

### will be corrected withre8pectto**tem~i'~ture** in

. tJte same fil!UIDer as theIntermediate speed coolins point to find lheinterseC?tion with**the~** heatingll)ad line. Theinterpolationprocedure

.for lteilting,will be 

### modifiedlO**a~()w** 

### the**~8** . of

### an intermediate

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### ntilnnerasitisin

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### Il

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## lV1Jl"iil. Nf. 31 

# I Friday, February 14, 1986 

# I Notices 

# ,

, ..(. 

### 5509

different

### ~_ffo~~le1lpeed**~t,U)s.**il is nat**app1o'~1:y:lncrease** the, " capwty.at" ,,')**a~Ulaticmt"tbi1'Jb (1PpendixMtO'Su~'B,ofPart4ao.**  ,;,J, ',' 

### section 5.2},.':,**;~,:~,** , ,; .'" , "



## n**~ ,regl,leSt~,d**  

## that,**~e** HSPF beincreased by4"'direciIy arid that no adjustmentbe ' ma4e 

### to**~frost** accumulation**t~sfpolnt** data;''l'biSrequest

# is bas'ed on comments published1»44FederalRegister 249 p 76703 

### (12/D/zg)-wbich reads: "Although

### thl.!! improvement does vary by region. analysis shows 

### that In most areas a 4 percent • improvement mthe seasonal**performag,ce~** factor is the minimum which wouldbe ' ,;;" expected .;' •DOE bas adjusted the

, enhancement faclor •.• In

### 'order to achieve a resultant effect of

### 4 percent improvement In the HSPF for unitawhlch use demand ' defrost."



### 5. ARI Standard 210/240-84 Appendix

### B references ANSI!ASHRAE Standard 116- 1983 for defInition oftest conditions and test methods. While Section 8.3 of 116-1983 prescribes that the Indoorair flow rate is to vary In accordance with the control system of the unit being tested. there are no instructions concerning modificatiOl,ls to the test procedures to allow for variation In Indoor air flow rate. It is necessary to set both the air flow rate and 'the fan speed for intermediate fan speeds.

It is proposed that the airflow rate at fan speeds less than the maximum speed be determined using the fan laws for a fixed resistance system. The air flow rate is then given by the ratio..of fan speed to maximum fan speed multiplied by air flow rate at maximum fan speed. Minimum static preSl:iure**requirementil~on1y** appiywhen.,the fan is ruiming at the maximum speed. which, will normally occur at the capacity rating point.

. , .

Test data**~re** available to support the changes in seasonal rating factors cited above and to support the use ofARl210/Z46- 84. Appendix B .as a basis for ratinS the variable speed equipment. These data are confIdential and 

### can be provided on Ute basis they are not disclosed outside of 

### the

. Department ofEnergy.

.

It is ourunderstanding that York i8nO ," .: longer manufacturing the ENMOD variable

. speed air conditioner. We.are presently

unaware of any order manufacturer{s) who offer for sale in the United States air conditioners which incorporate variable speed compressors and blowers in**th~lr** design. Sincerely. Edward Po. Baily. DirectorIndustryRelations. Appendix A Modifications to ARI210/240-84AppendixB Interpolation Methods .'

1. Section 2.1. Cooling Seas'on Performance Factor.

Intermediate Speed Performance Point. It is necessary to:determlne capacity and power as a function ofoutdoor dry bulb temperature for the Intermediate**spee~.** ' These relationships can be written as:. QV(T=QV(87}+QSLP'{T-87}, , . \**whe~** QV(T) is the capacity at the chosen intermediate speed 

# as a function ofoutdoor

. drylll!lb-temperature (T). QV(87) is the



### ,**i~diate** speed capacity point (tested at

-87,.QVtdE!Cll' ciry,.bulb). and QSLP·is .the**.?JI{lC;i~t·~rsuiltemperatulJ:l** slope given by: QSLP:=1-:9wi')'QL(82)-(QL(ll7»)/(82-

.

, ..',87}}+QWT'UQH{95}-QH(82»/(95-82)J

### QWr~{(QV{87}-QL(87»)/QH(87}-QL(87ll 

## where Ql:I(9S1 and QH(82) are the.maximum iipee'dteilfjroiilt capacities, QL(82) and QL(I)7},iire the minimum speed test point capacitlell. and QH(87) and QL(87) are the maximum and minimum speed capacities estimated at 87 outdoor ciry bulb using the test.point capacity data. I

Once (QY(T) has been determined. the temp.erature**~here** QV{T) and the load line intersect can be determined. This temperllture. designated 

### TVC. replaces 87 in the interpolation equations for Case II in ARl 210/210-84 Appendix B. The intermediate speed point power. EV(87). isreplaced by the intermediate speed power equation evaluated at TVC. The equation for EV(T) is determined in the same manner as the equation for QV(T) by replacing capacity values with the corresponding power values.

2. Section 2.2. Heating Season Performance Factor.

Intermediate Speed Performance Point. It is necessary to determine QV

### I(T) and EV(T) for the intermediate speed in heating. These equations are found in the same
manner as is described above for cooling points, but the heating test conditions and temperature values are for the heating test points. Similarly. the temperature where QV(T) and the heating load line intersect, TVH; must be determined. The interpolation

, procedure'for Case IIm.heating must be

expimded to pennit the use

# ofthe intermediate speed temperature and power value. The form ofthe**exp~ded** interpolation procedure for .heating is the

same as Case II in cooling when the intermediate speed heating point is used. December 13. 1985. Assistant Secretary for Conservation and Renewable Energy. U.S. Deparfment of Energy. 1000

. Independence A venue•

# .sw. Washington.**~DC~** 

### .
,- Re:

### AMENDMENT']'(j CARRIER CORPORATION'SDECEMBER 4. 1985 PETlTIONFOR WAIVER Gentlemen: Carrier Corporation amends its Petition for Waiver from DOE Test Procedures for ita variable speed air cc;mditioners and heat pumps as follows for

. clarification and specificity:'

(a) Substitute the following sentence for the last sentence in the first paragraph of our December4, 1985 Petition:

Waiver is requested for Carrier

. Corporation's 38EV/38QV variable speed

central air conditioners/heatpumps.

{b) Amend the fITst sentence ofthe second paragraph to read:

, ..Models in the 38EV/38QV variaple speed product lines employ variable speed motors to drive ttIe compressor and the indoor blower.

(c) Inse.rtthe following paragraph between the second and third paragraphs of the Petition dated December 4,1985:

The.38EV/38QV-equipment can be tested under the Appendix M procedures but the results of such testing are not representative of the true efficiency ofthe equipment. Very truly yours, Edward A. Baily, Directar. IndustryRelations. [FR Doc. 86-3355 Filed 2-13-86; 6:45 am]

B1WNG CODE 6450-01

....