Federal Register / Vol. 86, No. 163 / Thursday, August 26, 2021 / Notices 47631 

1On December 11, 2020, DOE published an 

amendment to 10 CFR 431.401 regarding the 

processing of petitions for an interim waiver, which 

became effective beginning January 11, 2021. 85 FR 

79802. The subject petition was received prior to 

the effective date of that amendment and therefore 

is being processed pursuant to the regulation in 

effect at the time of receipt, i.e., the disposition of 

the petition for an interim waiver is pursuant to 10 

CFR 431.401(e) and (h) in the 10 CFR parts 200 to 

499 edition revised as of January 1, 2021. 

2The petition did not identify any of the 

information contained therein as confidential 

business information. 

Dated: August 23, 2021. 

Kate Mullan, 

PRA Coordinator, Strategic Collections and 

Clearance, Governance and Strategy Division, 

Office of Chief Data Officer, Office of 

Planning, Evaluation and Policy 

Development. 

[FR Doc. 2021–18392 Filed 8–25–21; 8:45 am] 

BILLING CODE 4000–01–P 

DEPARTMENT OF ENERGY 

[Case Number 2020–024; EERE–2020–BT– 

WAV–0040] 

Energy Conservation Program: 

Notification of Petition for Waiver of 

LRC Coil From the Department of 

Energy Walk-In Coolers and Walk-In 

Freezers Test Procedure and 

Notification of Grant of Interim Waiver 

AGENCY: Office of Energy Efficiency and 

Renewable Energy, Department of 

Energy. 

ACTION: Notification of petition for 

waiver and grant of an interim waiver; 

request for comments. 

SUMMARY: This document announces 

receipt of and publishes a petition for 

waiver and interim waiver from LRC 

Coil Company (‘‘LRC Coil’’), which 

seeks a waiver for specified walk-in unit 

cooler basic models from the U.S. 

Department of Energy (‘‘DOE’’) test 

procedure used to determine the 

efficiency and energy consumption of 

walk-in coolers and walk-in freezers. 

DOE also gives notice of an Interim 

Waiver Order that requires LRC Coil to 

test and rate the specified walk-in unit 

cooler basic models in accordance with 

the alternate test procedure set forth in 

the Interim Waiver Order. DOE solicits 

comments, data, and information 

concerning LRC Coil’s petition and the 

alternate test procedure specified in the 

Interim Waiver Order so as to inform 

DOE’s final decision on LRC Coil’s 

waiver request. 

DATES: The Interim Waiver Order is 

effective on August 26, 2021. Written 

comments and information are 

requested and will be accepted on or 

before September 27, 2021. 

ADDRESSES: Interested persons are 

encouraged to submit comments using 

the Federal eRulemaking Portal at 

www.regulations.gov. Alternatively, 

interested persons may submit 

comments, identified by docket number 

EERE–2020–BT–WAV–0040, by any of 

the following methods: 

1. Federal eRulemaking Portal: 

www.regulations.gov. Follow the 

instructions for submitting comments. 

2. Email: to LRCWICF2020WAV0040@

ee.doe.gov. Include docket number 

EERE–2020–BT–WAV–0040 in the 

subject line of the message. 

No telefacsimiles (‘‘faxes’’) will be 

accepted. For detailed instructions on 

submitting comments and additional 

information on this process, see the 

SUPPLEMENTARY INFORMATION section of 

this document. 

Although DOE has routinely accepted 

public comment submissions through a 

variety of mechanisms, including postal 

mail and hand delivery/courier, the 

Department has found it necessary to 

make temporary modifications to the 

comment submission process in light of 

the ongoing Covid-19 pandemic. DOE is 

currently suspending receipt of public 

comments via postal mail and hand 

delivery/courier. If a commenter finds 

that this change poses an undue 

hardship, please contact Appliance 

Standards Program staff at (202) 586– 

1445 to discuss the need for alternative 

arrangements. Once the Covid-19 

pandemic health emergency is resolved, 

DOE anticipates resuming all of its 

regular options for public comment 

submission, including postal mail and 

hand delivery/courier. 

Docket: The docket, which includes 

Federal Register notices, comments, 

and other supporting documents/ 

materials, is available for review at 

www.regulations.gov. All documents in 

the docket are listed in the 

www.regulations.gov index. However, 

some documents listed in the index, 

such as those containing information 

that is exempt from public disclosure, 

may not be publicly available. 

The docket web page can be found at 

www.regulations.gov/docket/EERE2020-BT-WAV-0040. The docket web 

page contains instruction on how to 

access all documents, including public 

comments, in the docket. See the 

SUPPLEMENTARY INFORMATION section for 

information on how to submit 

comments through 

www.regulations.gov. 

FOR FURTHER INFORMATION CONTACT: 

Ms. Lucy deButts, U.S. Department of 

Energy, Office of Energy Efficiency and 

Renewable Energy, Building 

Technologies Office, Mailstop EE–5B, 

1000 Independence Avenue SW, 

Washington, DC 20585–0121. Email: 

AS_Waiver_Request@ee.doe.gov. 

Mr. Michael Kido, U.S. Department of 

Energy, Office of the General Counsel, 

Mail Stop GC–33, Forrestal Building, 

1000 Independence Avenue SW, 

Washington, DC 20585–0103. 

Telephone: (202) 586–8145. Email: 

Michael.Kido@hq.doe.gov. 

SUPPLEMENTARY INFORMATION: DOE is 

publishing LRC Coil’s petition for 

waiver in its entirety,1 pursuant to 10 

CFR 431.401(b)(1)(iv).2 DOE invites all 

interested parties to submit in writing 

by September 27, 2021, comments and 

information on all aspects of the 

petition, including the alternate test 

procedure. Pursuant to 10 CFR 

431.401(d), any person submitting 

written comments to DOE must also 

send a copy of such comments to the 

petitioner. The contact information for 

the petitioner is: Mike Williams, 

mwilliams@lrccoil.com, 3861 E 42nd 

Place, Yuma, AZ 85365. 

Submitting comments via 

www.regulations.gov. The 

www.regulations.gov web page will 

require you to provide your name and 

contact information. Your contact 

information will be viewable to DOE 

Building Technologies staff only. Your 

contact information will not be publicly 

viewable except for your first and last 

names, organization name (if any), and 

submitter representative name (if any). 

If your comment is not processed 

properly because of technical 

difficulties, DOE will use this 

information to contact you. If DOE 

cannot read your comment due to 

technical difficulties and cannot contact 

you for clarification, DOE may not be 

able to consider your comment. 

However, your contact information 

will be publicly viewable if you include 

it in the comment or in any documents 

attached to your comment. Any 

information that you do not want to be 

publicly viewable should not be 

included in your comment, nor in any 

document attached to your comment. If 

this instruction is followed, persons 

viewing comments will see only first 

and last names, organization names, 

correspondence containing comments, 

and any documents submitted with the 

comments. 

Do not submit to www.regulations.gov 

information for which disclosure is 

restricted by statute, such as trade 

secrets and commercial or financial 

information (hereinafter referred to as 

Confidential Business Information 

(‘‘CBI’’)). Comments submitted through 

www.regulations.gov cannot be claimed 

as CBI. Comments received through the 


jbell on DSKJLSW7X2PROD with NOTICES
47632 Federal Register / Vol. 86, No. 163 / Thursday, August 26, 2021 / Notices 

3All references to EPCA in this document refer 

to the statute as amended through the Energy Act 

of 2020, Public Law 116–260 (Dec. 27, 2020). 

4For editorial reasons, upon codification in the 

U.S. Code, Part C was redesignated as Part A–1. 

5On December 11, 2020, DOE amended 10 CFR 

431.401 regarding the processing of petitions for an 

interim waiver that became effective on January 11, 

2021. The subject petition was received prior to the 

effective date of that amendment and therefore is 

being processed pursuant to the regulation in effect 

at the time of receipt. Accordingly, all references to 

10 CFR 431.401 refer to the version in place as of 

the date of LRC Coil’s December 1, 2020 petition for 

interim waiver and waiver. 

website will waive any CBI claims for 

the information submitted. For 

information on submitting CBI, see the 

Confidential Business Information 

section. 

DOE processes submissions made 

through www.regulations.gov before 

posting. Normally, comments will be 

posted within a few days of being 

submitted. However, if large volumes of 

comments are being processed 

simultaneously, your comment may not 

be viewable for up to several weeks. 

Please keep the comment tracking 

number that www.regulations.gov 

provides after you have successfully 

uploaded your comment. 

Submitting comments via email. 

Comments and documents submitted 

via email also will be posted to 

www.regulations.gov. If you do not want 

your personal contact information to be 

publicly viewable, do not include it in 

your comment or any accompanying 

documents. Instead, provide your 

contact information on a cover letter. 

Include your first and last names, email 

address, telephone number, and 

optional mailing address. The cover 

letter will not be publicly viewable as 

long as it does not include any 

comments. 

Include contact information each time 

you submit comments, data, documents, 

and other information to DOE. Faxes 

will not be accepted. 

Comments, data, and other 

information submitted to DOE 

electronically should be provided in 

PDF (preferred), Microsoft Word or 

Excel, WordPerfect, or text (ASCII) file 

format. Provide documents that are not 

secured, written in English and free of 

any defects or viruses. Documents 

should not contain special characters or 

any form of encryption and, if possible, 

they should carry the electronic 

signature of the author. 

Campaign form letters. Please submit 

campaign form letters by the originating 

organization in batches of between 50 to 

500 form letters per PDF or as one form 

letter with a list of supporters’ names 

compiled into one or more PDFs. This 

reduces comment processing and 

posting time. 

Confidential Business Information. 

According to 10 CFR 1004.11, any 

person submitting information that he 

or she believes to be confidential and 

exempt by law from public disclosure 

should submit via email two wellmarked copies: One copy of the 

document marked confidential 

including all the information believed to 

be confidential, and one copy of the 

document marked ‘‘non-confidential’’ 

with the information believed to be 

confidential deleted. DOE will make its 

own determination about the 

confidential status of the information 

and treat it according to its 

determination. 

It is DOE’s policy that all comments 

may be included in the public docket, 

without change and as received, 

including any personal information 

provided in the comments (except 

information deemed to be exempt from 

public disclosure). 

Case Number 2020–024 

Interim Waiver Order 

I. Background and Authority 

The Energy Policy and Conservation 

Act, as amended (‘‘EPCA’’),3 authorizes 

the U.S. Department of Energy (‘‘DOE’’) 

to regulate the energy efficiency of a 

number of consumer products and 

certain industrial equipment. (42 U.S.C. 

6291–6317) Title III, Part C 4 of EPCA, 

added by the National Energy 

Conservation Policy Act, Public Law 

95–619, sec. 441 (Nov. 9, 1978), 

established the Energy Conservation 

Program for Certain Industrial 

Equipment, which sets forth a variety of 

provisions designed to improve energy 

efficiency for certain types of industrial 

equipment. Through amendments 

brought about by the Energy 

Independence and Security Act of 2007, 

Public Law 110–140, sec. 312 (Dec. 19, 

2007), this equipment includes walk-in 

coolers and walk-in freezers, the focus 

of this document. (42 U.S.C. 6311(1)(G)) 

The energy conservation program 

under EPCA consists essentially of four 

parts: (1) Testing, (2) labeling, (3) 

Federal energy conservation standards, 

and (4) certification and enforcement 

procedures. Relevant provisions of 

EPCA include definitions (42 U.S.C. 

6311), energy conservation standards 

(42 U.S.C. 6313), test procedures (42 

U.S.C. 6314), labeling provisions (42 

U.S.C. 6315), and the authority to 

require information and reports from 

manufacturers (42 U.S.C. 6316(a); 42 

U.S.C. 6299). 

The Federal testing requirements 

consist of test procedures that 

manufacturers of covered equipment 

must use as the basis for: (1) Certifying 

to DOE that their equipment complies 

with the applicable energy conservation 

standards adopted pursuant to EPCA (42 

U.S.C. 6316(a); 42 U.S.C. 6295(s)), and 

(2) making representations about the 

efficiency of that equipment (42 U.S.C. 

6314(d)). Similarly, DOE must use these 

test procedures to determine whether 

the equipment complies with relevant 

standards promulgated under EPCA. (42 

U.S.C. 6316(a); 42 U.S.C. 6295(s)). 

Under 42 U.S.C. 6314, EPCA sets forth 

the criteria and procedures DOE is 

required to follow when prescribing or 

amending test procedures for covered 

equipment. EPCA requires that any test 

procedures prescribed or amended 

under this section must be reasonably 

designed to produce test results which 

reflect the energy efficiency, energy use 

or estimated annual operating cost of 

covered products and equipment during 

a representative average use cycle and 

requires that test procedures not be 

unduly burdensome to conduct. (42 

U.S.C.6314(a)(2)) The test procedure 

used to determine the net capacity and 

annual walk-in energy factor (‘‘AWEF’’) 

of walk-in cooler and walk-in freezer 

refrigeration systems is contained in the 

Code of Federal Regulations (‘‘CFR’’) at 

10 CFR part 431, subpart R, appendix C, 

Uniform Test Method for the 

Measurement of Net Capacity and 

AWEF of Walk-in Cooler and Walk-in 

Freezer Refrigeration Systems 

(‘‘Appendix C’’). 

Under 10 CFR 431.401,5 any 

interested person may submit a petition 

for waiver from DOE’s test procedure 

requirements. DOE will grant a waiver 

from the test procedure requirements if 

DOE determines either that the basic 

model for which the waiver was 

requested contains a design 

characteristic that prevents testing of the 

basic model according to the prescribed 

test procedures, or that the prescribed 

test procedures evaluate the basic model 

in a manner so unrepresentative of its 

true energy consumption characteristics 

as to provide materially inaccurate 

comparative data. 10 CFR 431.401(f)(2). 

A petitioner must include in its petition 

any alternate test procedures known to 

the petitioner to evaluate the 

performance of the product type in a 

manner representative of the energy 

consumption characteristics of the basic 

model. 10 CFR 431.401(b)(1)(iii). DOE 

may grant the waiver subject to 

conditions, including adherence to 

alternate test procedures. 10 CFR 

431.401(f)(2). 

As soon as practicable after the 

granting of any waiver, DOE will 

publish in the Federal Register a notice 

of proposed rulemaking to amend its 


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Federal Register / Vol. 86, No. 163 / Thursday, August 26, 2021 / Notices 47633 

6 In proposing an amendment to 10 CFR 

431.401(i), DOE stated that—‘‘The 180-day duration 

was proposed because that time frame is consistent 

with the EPCA provision that provides 

manufacturers 180 days from issuance of a new or 

amended test procedure to begin using that test 

procedure for representation of energy efficiency.’’ 

84 FR 18414, 18416 (May 1, 2019); (See 42 U.S.C. 

6293(c)(2)). In the final rule published December 

11, 2020, stated that it was maintaining the 180-day 

grace period as proposed. 85 FR 79802, 79813. As 

such, were a Decision and Order issued with an 

alternate test procedure that differed from that 

required under this interim waiver, beginning 180 

days following publication of the Decision and 

Order any representations made by the petitioner 

must fairly disclose the results of testing in 

accordance with the alternate test procedure 

specified by the final Order and the applicable 

requirements of 10 CFR part 429. 

7A notation in this form provides a reference for 

information that is in the docket for this test 

procedure waiver (Docket No. EERE–2020–BT– 

WAV–0040) (available at www.regulations.gov/ 

docket/EERE-2020-BT-WAV-0040). This notation 

indicates that the statement preceding the reference 

is document number 1 in the docket and appears 

at pages 1–4 of that document. 

8The DOE test procedure incorporates by 

reference Air-Conditioning, Heating, and 

Refrigeration Institute (‘‘AHRI’’) Test Standard 

1250–2009, ‘‘Standard for Performance Rating of 

Walk-in Coolers and Freezers’’ (including Errata 

sheet dated December 2015) (‘‘AHRI 1250–2009’’). 

Section 6 of that standard defines walk-in box 

thermal loads as a function of refrigeration system 

net capacity for both high-load and low-load 

periods. The waiver petition asserts that wine 

cellars do not have distinct high and low load 

periods, and that the box load levels in the test 

standard are not representative for wine cellar 

refrigeration systems. 

9 DOE’s meetings with wine cellar refrigeration 

systems manufacturers were conducted consistent 

with the Department’s ex parte meeting guidance 

(74 FR 52795; October 14, 2009). The AHRI August 

2020 letter memorializes this communication and is 

provided in Docket No. EERE–2020–BT–WAV– 

0040–0010. 

regulations so as to eliminate any need 

for the continuation of such waiver. 10 

CFR 431.401(l) As soon thereafter as 

practicable, DOE will publish in the 

Federal Register a final rule to that 

effect. Id. 

The waiver process also provides that 

DOE may grant an interim waiver if it 

appears likely that the underlying 

petition for waiver will be granted and/ 

or if DOE determines that it would be 

desirable for public policy reasons to 

grant immediate relief pending a 

determination on the underlying 

petition for waiver. 10 CFR 

431.401(e)(2) (10 CFR parts 200 to 499 

edition revised as of January 1, 2021). 

Within one year of issuance of an 

interim waiver, DOE will either: (i) 

Publish in the Federal Register a 

determination on the petition for 

waiver; or (ii) publish in the Federal 

Register a new or amended test 

procedure that addresses the issues 

presented in the waiver. 10 CFR 

431.401(h)(1) (10 CFR parts 200 to 499 

edition revised as of January 1, 2021). 

If DOE ultimately denies the petition 

for waiver, or if the alternate test 

procedure specified in the interim 

waiver differs from the alternate test 

procedure specified by DOE in a 

subsequent decision and order, DOE 

will provide a period of 180 days before 

the manufacturer is required to use the 

DOE test procedure or the alternate test 

procedure specified in the decision and 

order to make representations of energy 

efficiency. 10 CFR 431.401(i).6 When 

DOE amends the test procedure to 

address the issues presented in a 

waiver, the waiver will automatically 

terminate on the date on which use of 

that test procedure is required to 

demonstrate compliance. 10 CFR 

431.401(h)(2) (10 CFR parts 200 to 499 

edition revised as of January 1, 2021). 

II. LRC Coil’s Petition for Waiver and 

Interim Waiver 

In a letter docketed on December 1, 

2020, LRC Coil filed a petition for 

waiver and interim waiver from the test 

procedure for walk-in cooler and walkin freezer refrigeration systems set forth 

at Appendix C. (LRC Coil, No. 1 at pp. 

1–4 7) In response to questions from 

DOE, LRC submitted an updated 

petition for waiver and interim waiver, 

docketed on August 6, 2021. (LRC Coil, 

No. 11 at pp. 1–3). 

The primary assertion in the petition 

is that absent an interim waiver the 

prescribed test procedure would 

evaluate the specified basic models in a 

manner so unrepresentative of their true 

energy consumption as to provide 

materially inaccurate comparative data. 

As presented in LRC Coil’s petition, the 

specified basic models of walk-in unit 

coolers operate at a temperature range of 

45 °F to 65 °F; higher than that of a 

typical walk-in cooler refrigeration 

system. Thus, the 35 °F temperature 

specified in the DOE test procedure for 

medium-temperature walk-in 

refrigeration systems would result in the 

prescribed test procedures evaluating 

the specified basic models in a manner 

so unrepresentative of their true energy 

consumption characteristics as to 

provide materially inaccurate 

comparative data. LRC Coil also states 

that the specified basic models are 

‘‘split cooling systems for walk-in wine 

cellars’’ that operate at temperature and 

relative humidity ranges optimized for 

the long-term storage of wine and are 

usually located in air-conditioned 

spaces. LRC Coil contends that because 

of these characteristics, wine cellar 

walk-in unit cooler systems differ from 

other walk-in cooler refrigeration 

systems in their walk-in box 

temperature setpoint, walk-in box 

relative humidity, low/high load split,8

and compressor efficiency. 

LRC Coil states that the specified 

basic models are designed to provide a 

cold environment at a temperature range 

between 45 °F to 65 °F with 50–70 

percent relative humidity (‘‘RH’’), and 

typically are kept at 55 °F and 55 

percent RH rather than the 35 °F and 

<50 percent RH test condition 

prescribed by the DOE test procedure. 

LRC Coil states that the refrigeration 

systems are designed solely for the 

purpose of long-term wine storage to 

mimic the temperature and humidity of 

natural caves. LRC Coil also asserts that 

wine cellars optimally operate between 

45 °F to 65 °F, and notes that the design 

of their units prohibits their operation at 

room/entering air temperatures of less 

than 45 °F. Although not specifically 

addressed in LRC Coil’s request for 

waiver, DOE understands that operating 

the subject walk-in cooler refrigeration 

systems at the 35 °F condition would 

adversely mechanically alter the 

intended performance of the system, 

which would include icing of the 

evaporator coil that could potentially 

damage the compressor, and would not 

result in an accurate representation of 

the performance of the cooling unit. 

The basic models listed in LRC Coil’s 

petition include ‘‘Evaporator Only 

Models’’ which are not sold with a 

matched condensing unit (i.e., the unit 

cooler and condensing unit are not sold 

together as a pair). Although not 

explicitly identified by LRC in its 

petition, DOE notes that unit coolers 

that are not part of a matched pair must 

be tested according to the provisions in 

AHRI 1250–2020 for unit coolers tested 

alone. 

DOE has received multiple requests 

from wine cellar manufacturers for 

waiver and interim waiver from 

Appendix C. In light of these requests, 

DOE met with both AHRI and wine 

cellar walk-in cooler refrigeration 

system manufacturers to develop a 

consistent and representative alternate 

test procedure that would be relevant to 

each waiver request. Ultimately, AHRI 

sent a letter to DOE on August 18, 2020, 

summarizing the industry’s position on 

several issues (‘‘AHRI August 2020 

Letter’’).9 This letter documents 

industry support for specific wine cellar 

walk-in cooler refrigeration system test 

procedure requirements, allowing the 

provisions to apply only to refrigeration 

systems with a minimum operating 

temperature of 45 °F, since wine cellar 

system controls and unit design 

specifications prevent these walk-ins 

from reaching a temperature below 

45 °F. A provision for testing wine cellar 

walk-in cooler refrigeration systems at 


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47634 Federal Register / Vol. 86, No. 163 / Thursday, August 26, 2021 / Notices 

10External static pressure is the sum of all the 

pressure resisting the fans. In this case, this is 

chiefly the resistance generated by the air moving 

through ductwork. 

11 DOE notes that in petitions for waiver received 

from other manufacturers, petitioners suggested that 

the correction factor would account for the different 

use and load patterns of the specified basic models 

as compared to walk-in cooler refrigeration systems 

generally. See Notifications of Petition for Waiver 

and Grant of Interim Waiver for Air Innovations (86 

FR 2403, 2407; Jan. 12, 2021), CellarPro (86 FR 

11972, 11976; Mar. 1, 2021), and Vinotheque (86 FR 

11961, 11964; Mar. 1, 2021). 

12The specified operating conditions are 55 °F 

room temperature (cold-side air entering), 38 °F 

suction temperature (refrigerant saturation 

temperature), and 17 °F TD (difference between the 

saturation temperature of the refrigerant inside the 

coil and the cold-side air entering temperature). The 

relative humidity of the cold-side air entering is not 

specified. An example series of specified models 

with capacity and condition information can be 

found at Docket No. EERE– 2020–BT–WAV–0040– 

0007. 

13EER in this case represents the refrigeration 

load (in British thermal units (‘‘Btu’’)/hour (‘‘h’’)) 

required by the unit cooler divided by the 

compressor power (in watts (‘‘W’’)) required to 

provide that load. 

14Adjusted dew point represents the pressure 

level at the unit cooler exit converted to its 

corresponding dew point temperature and adjusted 

for pressure loss in the suction line returning the 

refrigerant to the compressor. Dew point is the 

warmest temperature at which a refrigerant can 

exist in equilibrium in a two-phase liquid-vapor 

state at a given pressure—the dew point represents 

the two-phase evaporating refrigerant temperature 

in the unit cooler. 

an external static pressure (‘‘ESP’’) 10 of 

50 percent of the maximum ESP to be 

specified by manufacturers for each 

basic model (AHRI August 2020 Letter) 

is also included. LRC Coil’s petition 

states that all basic models listed in the 

petition for waiver and interim waiver 

cannot be operated at a temperature less 

than 45 °F and provides DOE with 

maximum ESP values for all ducted 

basic models specified in its petition. 

LRC Coil also requests an interim 

waiver from the existing DOE test 

procedure. DOE will grant an interim 

waiver if it appears likely that the 

petition for waiver will be granted, and/ 

or if DOE determines that it would be 

desirable for public policy reasons to 

grant immediate relief pending a 

determination of the petition for waiver. 

10 CFR 431.401(e)(2). 

III. Requested Alternate Test Procedure 

EPCA requires that manufacturers use 

DOE test procedures when making 

representations about the energy 

consumption and energy consumption 

costs of covered equipment. (42 U.S.C. 

6314(d)) Consistency is important when 

making representations about the energy 

efficiency of covered products and 

equipment, including when 

demonstrating compliance with 

applicable DOE energy conservation 

standards. Pursuant to 10 CFR 431.401, 

and after consideration of public 

comments on the petition, DOE may 

establish in a subsequent Decision and 

Order an alternate test procedure for the 

basic models addressed by the Interim 

Waiver Order. 

LRC Coil seeks to use an approach 

that would test and rate specific wine 

cellar walk-in unit cooler basic models. 

The company’s suggested approach 

specifies using an air-return temperature 

of 55 °F, as opposed to the 35 °F 

requirement prescribed in the current 

DOE test procedure. LRC Coil also 

suggests using an air-return relative 

humidity of 55 percent, as opposed to 

<50 percent RH as prescribed in the 

current DOE test procedure. LRC Coil 

stated that wine cellar walk-in cooler 

refrigeration systems do not experience 

high- and low- temperature conditions, 

but rather operate at steady state in a 

predominantly air-conditioned 

environment, supporting the use of the 

correction factor to adjust for average 

usage. LRC Coil requested that a 

correction factor of 0.55 be applied to 

the final AWEF calculation to adjust for 

average usage.11 Finally, LRC Coil states 

that the external static pressure for 

testing systems with ducted evaporator 

air would be set to half of the reported 

maximum external static pressure. 

IV. Interim Waiver Order 

DOE has reviewed LRC Coil’s 

application, its suggested testing 

approach, representations of the 

specified basic models on the website 

for the LRC Coil brand, related product 

catalogs, and information provided by 

LRC Coil and other wine cellar walk-in 

cooler refrigeration system 

manufacturers as discussed. Based on 

the assertions in the petition, absent an 

interim waiver, the DOE test procedure 

for walk-in cooler refrigeration systems 

would evaluate the subject basic models 

in a manner so unrepresentative of its 

true energy consumption characteristics 

as to provide materially inaccurate 

comparative data. Therefore, based on 

its review, DOE is granting an interim 

waiver that requires testing with a 

modified version of the testing approach 

suggested by LRC Coil. 

The modified testing approach would 

apply to unit cooler (evaporator) only 

models specified in LRC Coil’s waiver 

petition Specified ducted basic models 

(RMD and VAH) and specified ductless 

basic models (SLA, SLPA, DQ, LPAQ, 

Q, CE, HS, RM, VRM, BK, CTIH, CTE, 

and WM) are unit coolers (evaporator 

units) designed to be paired with a 

remote condensing unit that is provided 

by a different manufacturer, in which 

refrigerant circulates between the 

‘‘evaporator unit’’ (unit cooler) portion 

of the system and the ‘‘remote 

condensing unit’’. The refrigerant cools 

the wine cellar air in the evaporator 

unit, while the condensing unit rejects 

heat from the refrigeration system in a 

remote location, often outside. The 

evaporator unit of the ducted unit cooler 

system circulates air through ducts from 

the wine cellar to the evaporator unit 

and back to provide cooling, while the 

evaporator unit of the ductless unit 

cooler system may be ceiling-mounted, 

installed through-the-wall, or installed 

inside of the wine cellar for direct 

cooling. The capacity range of the 

specified basic models is from 1,500 

Btu/h to 36,000 Btu/h for the specified 

operating conditions for each of the 

models.12

DOE considers the operating 

temperature range of the specified basic 

models to be integral to its analysis of 

whether such models require a test 

procedure waiver. Grant of the interim 

waiver and its alternative test procedure 

to the specified basic models listed in 

the petition is based upon the 

representation by LRC Coil that the 

operating range for the basic models 

listed in the interim waiver does not 

extend below 45 °F. 

The alternate test procedure specified 

in the Interim Waiver Order requires 

testing the specified basic models 

according to Appendix C with the 

following changes. The required 

alternate test procedure specifies an air 

entering dry-bulb temperature of 55 °F 

and a relative humidity of 55 percent. 

Although not addressed by LRC Coil 

in its petition, the DOE test procedure 

for unit coolers tested alone requires use 

of an energy efficiency ratio (‘‘EER’’) 

value,13 which is necessary to calculate 

the compressor energy use that would 

be expended to handle the walk-in unit 

cooler load. Appendix C, Section 3.3.1. 

AHRI 1250–2020 section 7.8 provides 

an EER table to calculate AWEF for lowand medium-temperature unit coolers 

tested alone—the table provides varying 

EER values, dependent on the adjusted 

dew point 14 condition at the 

compressor inlet. However, LRC 

indicated that its walk-in unit coolers 

operate with a 38 °F evaporating 

temperature, which exceeds the 

maximum temperature in the AHRI 

1250–2020 table. Furthermore, the EER 

table represents efficiency of parallel 

rack systems (see the title of section 7.9 

of AHRI 1250–2009, ‘‘Walk-in Unit 

Cooler Match to Parallel Rack System’’), 

which are typically used in supermarket 


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15See for example, ‘‘Hussmann Parallel Rack 

Systems’’, www.hussmann.com/ns/TechnicalDocuments/0427598_D_Rack_IO_EN.pdf. 16AHRI 1250–2009 Table 11 prescribes a return 

gas temperature (measured at the condensing unit 

inlet location) equal to 41 °F for testing medium 

temperature condensing units. Also, Table 15 and 

Section 3.3.1 of Appendix C prescribe testing 

medium-temperature unit coolers using 25 °F 

saturated suction temperature (this is the same as 

unit cooler exit dew point temperature), and 6.5 °F 

superheat (in case the installation manual doesn’t 

provide superheat requirements). Thus, the unit 

cooler exit temperature would be 25 °F + 6.5 °F = 

31.5 °F, and the implied suction line temperature 

rise is 41 °F¥31.5 °F = 9.5 °F. The analysis 

conducted for wine cellars rounds this to 10 °F. 

17Head pressure control refers to reduction of 

condenser heat transfer performance using fan 

cycling or other means when it is cold outside in 

order to avoid unusually low condensing 

temperature. Such low condensing temperatures are 

undesirable because they can reduce refrigeration 

system performance and/or increase risk of 

compressor damage. A typical minimum 

condensing temperature is 70 °F, which may apply 

whenever outdoor temperature is lower than 50 °F. 

DOE selected the 90 °F annual average to be 

representative of operation that would involve 

condensing temperature ranging from 70 °F to 120 

°F, since outdoor temperature varies. 

18 Inches of water column (‘‘in. wc’’) is a unit of 

pressure conventionally used for measurement of 

pressure differentials. 

19The duct material, length, diameter, shape, and 

configuration are used to calculate the ESP 

generated in the duct, along with the temperature 

and flow rate of the air passing through the duct. 

The conditions during normal operation that result 

in a maximum ESP are used to calculate the 

reported maximum ESP values, which are 

dependent on individual unit design and represent 

manufacturer-recommended installation and use. 

20Calculations were conducted over an absolute 

roughness range of 1.0–4.6 mm for flexible duct as 

defined in pages 1–2 of an OSTI Journal Article on 

pressure loss in flexible HVAC ducts at 

www.osti.gov/servlets/purl/836654 (Docket No. 

EERE–2020–BT–WAV–0040–0006) and available at 

www.regulations.gov. 

21 Duct lengths and diameters can be found in 

LRC Coil’s installation manuals at 

www.regulations.gov Docket No. EERE–2020–BT– 

WAV–0040–0005, and EERE–2020–BT–WAV– 

0040–0004. 

refrigeration systems.15 The EER values 

for parallel rack systems are not 

expected to be representative of the 

compressors used in the condensing 

units paired with wine cellar walk-in 

unit coolers. 

Therefore, DOE developed EER values 

appropriate to wine cellar walk-in 

cooler refrigeration systems. DOE 

obtained compressor performance data 

from Emerson and Tecumseh product 

websites (EERE–2020–BT–WAV–0040, 

No. 0002 and No. 0008, respectively) for 

high-temperature refrigeration 

compressor models within the 

applicable capacity range (2,900 Btu/h 

to 36,000 Btu/h). DOE expects that the 

condensing units paired with wine 

cellar walk-in unit coolers will use 

either hermetic reciprocating or 

hermetic scroll compressors designed 

for use with HFC–134a, R404A, or 

R407C refrigerants. Based on the 

compressor performance data, DOE 

calculated representative compressor 

EER levels for wine cellar walk-in unit 

coolers using the following parameters: 

• 38 °F unit cooler exit dew point 

condition, as suggested by LRC (LRC 

Coil, No. 1 at pp. 3). 

• 2 °F equivalent suction line dew 

point pressure drop, consistent with 

AHRI 1250–2009 section 7.9.1. 

• 7 °F evaporator exit superheat, 

rounding to whole number values of the 

6.5 °F superheat test condition 

prescribed in the footnote to Table 15 of 

Appendix C in case a value is not 

provided in an installation manual. 

• 55 °F refrigerant temperature 

entering the compressor, representing a 

10 °F refrigerant vapor temperature rise 

in the suction line, consistent with the 

temperature rise implied for mediumtemperature refrigeration system test 

conditions.16

• 90 °F annual average condensing 

temperature. This assumes that the 

condensing unit serving the unit cooler 

would be located outdoors and that 

head pressure control would prevent 

excessively cold condensing operation 

at cold outdoor temperatures.17

DOE plotted the calculated 

compressor EER values versus 

calculated unit cooler capacity and 

noted that the EER can significantly 

vary with capacity (EERE–2020–BT– 

WAV–0040, No. 0009). EER is generally 

low for low-capacity compressors and 

high for high-capacity compressors, 

with a transition region in between. 

Based on the plotted calculations, DOE 

determined for the purpose of the 

interim waiver that a representative 

value for EER should depend on 

capacity. As such, DOE developed 

different functions of EER for three 

distinct capacity ranges. Table 1 

summarizes these capacity ranges and 

EER functions for high-temperature 

compressors. 

TABLE 1—EER VALUES FOR HIGH

TEMPERATURE COMPRESSORS AS A

FUNCTION OF CAPACITY FOR WINE

CELLAR WALK-IN COOLER REFRIGERATION SYSTEMS

Capacity 

(Btu/hr) 

EER 

(Btu/Wh) 

<10,000 ............. 11. 

10,000–19,999 .. (0.0007 × Capacity) + 4. 

20,000–36,000 .. 18. 

Section 3.3.7 of Appendix C specifies 

section 7.9 of AHRI 1250–2009 for 

calculation of AWEF and net capacity 

for unit coolers tested alone. The 

alternate test procedure required under 

this interim waiver modifies section 

3.3.7 of Appendix C to use the EER 

values provided in Table 1 for 

determining AWEF. 

The alternate test procedure required 

under the interim waiver also includes 

the following modifications to LRC 

Coil’s suggested approach: For systems 

that can be installed with ducted 

evaporator air or without ducted 

evaporator air, testing would be 

conducted at 50 percent of the 

maximum ESP, consistent with the 

AHRI August 2020 Letter 

recommendations, subject to a tolerance 

of ¥0.00/+0.05 in. wc.18 DOE 

understands that maximum ESP is 

generally not published in available 

literature such as installation 

instructions, but manufacturers do 

generally specify the size and maximum 

length of ductwork that is acceptable for 

any given unit in such literature. The 

duct specifications determine the ESP 

that the unit would experience in the 

field.19 The provision of allowable duct 

dimensions is more convenient for 

installers than maximum ESP, since it 

relieves the installer from having to 

perform duct pressure drop calculations 

to determine ESP. DOE independently 

calculated the maximum pressure drop 

over a range of common duct roughness 

values 20 using duct lengths and 

diameters published in LRC Coil’s 

installation manuals.21 DOE’s 

calculations show reasonable agreement 

with the maximum ESP values provided 

by LRC Coil for the specified basic 

models. Given that the number and 

degree of duct bends and duct type will 

vary by installation, DOE found the 

maximum ESP values provided by LRC 

Coil to be sufficiently representative. 

Selection of a representative ESP 

equal to half the maximum ESP is based 

on the expectation that most 

installations will require less than the 

maximum allowable duct length. In the 

absence of field data, DOE expects that 

a range of duct lengths from the 

minimal length to the maximum 

allowable length would be used; thus, 

DOE believes that half of the maximum 

ESP would be representative of most 

installations. For unit cooler basic 

models that are not designed for the 

ducting of air, this design characteristic 

must be clearly stated. 

Additionally, if there are multiple 

evaporator fan speed settings, the speed 

setting in the unit’s installation 

instructions would be used for testing. 

However, if the installation instructions 

do not specify a fan speed setting for 

ducted installation, systems that can be 

installed with ducts would be tested 

with the highest available fan speed. 

The ESP would be set for testing by 


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22This approach is used for testing of furnace 

fans, as described in section 8.6.1.1 of 10 CFR part 

430, appendix AA to subpart B. 

23This runtime range was suggested by two other 

wine cellar walk-in refrigeration system 

manufacturers: Air Innovations and CellarPro. See 

86 FR 2403, 2408 (Jan. 12, 2021) and 86 FR 11972, 

11977 (Mar. 1, 2021), respectively. 

symmetrically restricting the outlet 

duct.22

The alternate test procedure also 

describes the requirements for 

measurement of ESP consistent with 

provisions provided in section C9.1.1.2 

of AHRI 1250–2020 when using the 

indoor air enthalpy method with unit 

coolers. 

DOE notes that, despite the request 

from LRC Coil, it is not including a 0.55 

correction factor in the alternate test 

procedure required by the Interim 

Waiver Order. The company sought to 

include a 0.55 correction factor to adjust 

for average use, stating that wine cellars 

do not experience high- and low-load 

conditions, but rather operate at steady 

state conditions in a predominately airconditioned environment, but did not 

provide any additional support for this 

recommendation. While not specifically 

addressed in the request for waiver 

submitted by LRC Coil, waivers 

submitted by other manufacturers have 

stated that the suggested 0.55 correction 

factor addresses the differences in run 

time and compressor inefficiency of 

wine cellar walk-in cooler refrigeration 

systems as compared to walk-in cooler 

refrigeration systems more generally and 

have suggested that the run time for 

wine cellar walk-in cooler refrigeration 

systems ranges from 50 to 75 percent.23

AHRI 1250–2009 accounts for percent 

run time in the AWEF calculation by 

setting walk-in box load equal to 

specific fractions of refrigeration system 

net capacity—the fractions are defined 

based on whether the refrigeration 

system is for cooler or freezer 

applications, and whether it is designed 

for indoor or outdoor installation (see 

sections 6.2 (applicable to coolers) and 

6.3 (applicable to freezers) of AHRI 

1250–2009). The alternate test 

procedure provided by this interim 

waiver requires calculating AWEF based 

on setting the walk-in box load equal to 

half of the refrigeration system net 

capacity, without variation according to 

high- and low-load periods and without 

variation with outdoor air temperature 

for outdoor refrigeration systems. 

Setting the walk-in box load equal to 

half the refrigeration system net 

capacity results in a refrigeration system 

run time fraction slightly above 50 

percent, which is within the range 

suggested by other manufacturers of 

wine cellar walk-in cooler refrigeration 

systems as being representative for the 

specified basic models. As previously 

discussed, DOE regulates walk-in energy 

consumption at the component level, 

with separate test procedures for walkin refrigeration systems, doors, and 

panels. Section 6 of AHRI 1250–2009 

provides equations for determining 

refrigeration box load as a function of 

refrigeration system capacity. Using 

these equations with an assumed load 

factor of 50 percent maintains 

consistency with Appendix C while 

providing an appropriate load fraction 

for wine cellar walk-in cooler 

refrigeration systems. Accordingly, DOE 

has declined to adopt a correction factor 

for the equipment at issue. 

Based on DOE’s review of LRC Coil’s 

petition, the required alternate test 

procedure specified in the Interim 

Waiver Order appears to allow for the 

accurate measurement of energy 

efficiency of the specified basic models, 

while alleviating the testing issues 

associated with LRC Coil’s 

implementation of wine cellar walk-in 

unit cooler testing for these basic 

models. Consequently, DOE has 

determined that LRC Coil’s petition for 

waiver will likely be granted. 

Furthermore, DOE has determined that 

it is desirable for public policy reasons 

to grant LRC Coil immediate relief 

pending a determination of the petition 

for waiver. 

For the reasons stated, it is ordered 

that: 

LRC Coil must test and rate the 

following LRC branded wine cellar 

walk-in unit cooler basic models with 

the alternate test procedure set forth in 

paragraph (2). 

BASIC MODELS

SLA18–54Q SLPA–26–62Q DQ–207 

SLA28–108Q SLPA36–95Q DQ–207C 

SLA38–163Q SLPA46–128Q DQ–275 

SLA48–217Q SLPA56–162Q DQ–275C 

SLA58–270Q SLPA66–200Q DQ–345 

SLA68–322Q DQ–345C 

DQ–432 

DQ–541 

DQ–650 

LPA17–10Q Q–500W CE1–28Q 

LPA17–13Q Q–750W CE2–89Q 

LPA27–18Q Q–1000W CD3–129Q 

LPA27–23Q Q–1350W 

LPA37–32Q Q–1640W 

LPA47–42Q Q–2000W 

LPA57–55Q Q–2600W 

HS–25CLEC RM–25EC RMD–25EC 

HS–31CLEC RM–35EC RMD–35EC 

HS–47CLEC RM–50EC RMD–50EC 

HS–66CLEC RM–65EC RMD–65EC 

HS–87CLEC RM–80EC RMD–80EC 

HS–120CLEC 

HS–25EC 

HS–31EC 

HS–47EC 

HS–66EC 

HS–87EC 

HS–120EC 

HS–180EC 

VAH–25EC VRM–25EC BK17–40 

VAH–31EC VRM–35EC BK27–60 


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24LRC Coil lists VRM–65 in their petition for 

waiver and interim waiver (EERE–2020–BT–WAV– 

0040–0011). The basic model number has been 

modified since LRC Coil’s product literature lists 

‘VRM–65EC’ and all other VRM models have an 

‘EC’ appended to the end of the model number. 

Additionally, in a July 27, 2021 email, LRC Coil 

confirmed that all VAH series models should in in 

‘EC’. 

BASIC MODELS—Continued 

VAH–47EC VRM–50EC 

VAH–66EC VRM–65EC24

VAH–87EC VRM–80EC 

VAH–120EC 

VAH–180EC 

CTIH–15 CTE–15EC WM–15 

CTIH–25 CTE–25EC WM–25 

CTIH–35 CTE–35EC WM–35 

CTIH–50 CTE–50EC WM–50 

CTIH–70 

(2) The alternate test procedure for the 

LRC Coil basic models identified in 

paragraph (1) of this Interim Waiver 

Order is the test procedure for Walk-in 

Cooler Refrigeration Systems prescribed 

by DOE at 10 CFR part 431, subpart R, 

appendix C (‘‘Appendix C to Subpart 

R’’), except as detailed below. All other 

requirements of Appendix C and DOE’s 

regulations remain applicable. 

In Appendix C to Subpart R, revise 

section 3.1.1 (which specifies 

modifications to AHRI 1250–2009 

(incorporated by reference; see 

§ 431.303)) to read: 

3.1.1. In Table 1, Instrumentation 

Accuracy, refrigerant temperature 

measurements shall have an accuracy of 

±0.5 °F for unit cooler in/out. 

Measurements used to determine 

temperature or water vapor content of 

the air (i.e. wet bulb or dew point) shall 

be accurate to within ±0.25 °F; all other 

temperature measurements shall be 

accurate to within ±1.0 °F. 

In Appendix C to Subpart R, revise 

section 3.1.5 (which specifies 

modifications to AHRI 1250–2009) and 

revise modifications to AHRI 1250–2009 

Table 15: 

3.1.5. Table 15 shall be modified to 

read: 

TABLE 15—REFRIGERATOR UNIT COOLER

Test description 

Unit cooler 

air entering 

dry-bulb 

temperature, 

°F 

Unit cooler 

air entering 

relative 

humidity, 

% 

Saturation 

temperature, 

°F 

Liquid inlet 

saturation 

temperature, 

°F 

Liquid inlet 

subcooling 

temperature, 

°F 

Compressor 

capacity 

Test 

objective 

Off Cycle Fan Power ........ 55 55 .................... .................... .................... Compressor Off .. Measure fan input power during compressor off cycle. 

Refrigeration Capacity 

Suction A.

55 55 38 105 9 Compressor On .. Determine Net Refrigeration Capacity of 

Unit Cooler. 

Notes: Superheat to be set according to equipment specification in equipment or installation manual. If no superheat specification is given, a default superheat 

value of 6.5 °F is shall be used. The superheat setting used in the test shall be reported as part of the standard rating. 

In Appendix C to Subpart R, revise 

section 3.3.1 (which specifies 

modifications to AHRI 1250–2009) to 

read: 

3.3.1. For unit coolers tested alone, 

use test procedures described in AHRI 

1250–2009 (incorporated by reference; 

see § 431.303) for testing unit coolers for 

use in mix-match system ratings, except 

that for the test conditions in Tables 15 

and 16, use the Suction A saturation 

condition test points only. Determine 

AWEF as described in section 3.3.7. 

In Appendix C to Subpart R, revise 

section 3.3.3, and add sections 3.3.3.1 

and 3.3.3.2 to read: 

3.3.3 Evaporator fan power. 

3.3.3.1 The unit cooler fan power 

consumption shall be measured in 

accordance with the requirements in 

Section C3.5 of AHRI 1250–2009. This 

measurement shall be made with the fan 

operating at full speed, either measuring 

unit cooler or total system power input 

upon the completion of the steady state 

test when the compressor and the 

condenser fan of the walk-in system are 

turned off, or by submetered 

measurement of the evaporator fan 

power during the steady state test. 

Section C3.5 of AHRI 1250–2009 is 

revised to read: 

Unit Cooler Fan Power Measurement. 

The following shall be measured and 

recorded during a fan power test. 

EFcomp,on Total electrical power input to fan 

motor(s) of Unit Cooler, W 

FS Fan speed (s), rpm 

N Number of motors 

Pb Barometric pressure, in. Hg 

Tdb Dry-bulb temperature of air at inlet, °F 

Twb Wet-bulb temperature of air at inlet, °F 

V Voltage of each phase, V 

For a given motor winding 

configuration, the total power input 

shall be measured at the highest 

nameplated voltage. For three-phase 

power, voltage imbalance shall be no 

more than 2%. 

3.3.3.2 Evaporator fan power for the 

off cycle is equal to the on-cycle 

evaporator fan power with a run time of 

ten percent of the off-cycle time. 

EFcomp,off = 0.1 × EFcomp,on

In Appendix C to Subpart R, add new 

section 3.3.11 to read: 

3.3.11. For unit cooler systems tested 

alone with ducted evaporator air, or that 

can be installed with or without ducted 

evaporator air: Connect ductwork on 

both the inlet and outlet connections 

and determine external static pressure 

as described in ASHRAE 37–2009, 

sections 6.4 and 6.5. Use pressure 

measurement instrumentation as 

described in ASHRAE 37–2009 section 

5.3.2. Test at the fan speed specified in 

manufacturer installation instructions— 

if there is more than one fan speed 

setting and the installation instructions 

do not specify which speed to use, test 

at the highest speed. Conduct tests with 

the external static pressure equal to 50 

percent of the maximum external static 

pressure allowed by the manufacturer 

for system installation within a 

tolerance of ¥0.00/+0.05 in. wc. Set the 

external static pressure by 

symmetrically restricting the outlet of 

the test duct. In case of conflict, these 

requirements for setting evaporator 


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47638 Federal Register / Vol. 86, No. 163 / Thursday, August 26, 2021 / Notices 

airflow take precedence over airflow 

values specified in manufacturer 

installation instructions or product 

literature. 

In Appendix C to Subpart R, revise 

section 3.3.7 (which specifies 

modifications to AHRI 1250–2009) to 

read: 

3.3.7. For unit coolers tested alone, 

calculate AWEF on the basis that walkin box load is equal to half of the system 

net capacity, without variation 

according to high and low load periods, 

and with EER set according to tested 

evaporator capacity, as follows: 

For Unit Coolers Tested Alone: 

The net capacity, q ̇ mix,evap, is 

determined from the test data for the 

unit cooler at the 38 °F suction 

dewpoint. 

BILLING CODE 6717–01–P 

BILLING CODE 6717–01–C 

(3) Representations. LRC Coil may not 

make representations about the 

efficiency of a basic model listed in 

paragraph (1) for compliance, 

marketing, or other purposes unless that 

basic model has been tested in 

accordance with the provisions set forth 

in this alternate test procedure and such 

representations fairly disclose the 

results of such testing. 

(4) This Interim Waiver Order shall 

remain in effect according to the 

provisions of 10 CFR 431.401. 

(5) This Interim Waiver Order is 

issued on the condition that the 

statements and representations provided 

by LRC Coil are valid. If LRC Coil makes 

any modifications to the controls or 

configurations of a basic model subject 

to this Interim Waiver Order, such 

modifications will render the waiver 

invalid with respect to that basic model, 

and LRC Coil will either be required to 

use the current Federal test method or 

submit a new application for a test 

procedure waiver. DOE may rescind or 

modify this waiver at any time if it 

determines the factual basis underlying 

the petition for the Interim Waiver 

Order is incorrect, or the results from 

the alternate test procedure are 

unrepresentative of a basic model’s true 

energy consumption characteristics. 10 

CFR 431.401(k)(1). Likewise, LRC Coil 

may request that DOE rescind or modify 

the Interim Waiver Order if LRC Coil 

discovers an error in the information 

provided to DOE as part of its petition, 

determines that the interim waiver is no 

longer needed, or for other appropriate 

reasons. 10 CFR 431.401(k)(2). 

(6) Issuance of this Interim Waiver 

Order does not release LRC Coil from 

the applicable requirements set forth at 

10 CFR part 429. 

DOE makes decisions on waivers and 

interim waivers for only those basic 

models specifically set out in the 

petition, not future models that may be 

manufactured by the petitioner. LRC 

Coil may submit a new or amended 

petition for waiver and request for grant 

of interim waiver, as appropriate, for 

additional basic models of Walk-in 

Cooler Refrigeration Systems. 

Alternatively, if appropriate, LRC Coil 

may request that DOE extend the scope 

of a waiver or an interim waiver to 

include additional basic models 

employing the same technology as the 

basic model(s) set forth in the original 


jbell on DSKJLSW7X2PROD with NOTICESEN26AU21.021</GPH>

BL= 0.5 XCJ.mix,evap 

• ( CJ.mix,evap+ 3.412 X E'Fcomp,on) , Emix,rack= EER + EF comp,on 

Where: 

if CJ.mix,evap<10,000 Btu/h 

{ 

11 

EER= 0.0007·qmix,evap+4 

18 

if 10,000~qmix,evap <20,000 Btu/h 

if 20,000~ CJ.mix,evap<36,000 Btu/h 

BL+ 3 .412 X E'F comp,off LF= . Clmix,evap+ 3.412XEFcomp,off 

BL 

AWEF=. . Emix,rack X LF + EF comp,offX ( 1-LF) 

Where: BL is the non-equipment-related box load 

LF is the load factor 

And other symbols are as defined in Section 8 of ARRI 1250-

2009. 
Federal Register / Vol. 86, No. 163 / Thursday, August 26, 2021 / Notices 47639 

petition consistent with 10 CFR 

431.401(g). 

Signing Authority 

This document of the Department of 

Energy was signed on August 20, 2021, 

by Kelly Speakes-Backman, Principal 

Deputy Assistant Secretary and Acting 

Assistant Secretary for Energy Efficiency 

and Renewable Energy, pursuant to 

delegated authority from the Secretary 

of Energy. That document with the 

original signature and date is 

maintained by DOE. For administrative 

purposes only, and in compliance with 

requirements of the Office of the Federal 

Register, the undersigned DOE Federal 

Register Liaison Officer has been 

authorized to sign and submit the 

document in electronic format for 

publication, as an official document of 

the Department of Energy. This 

administrative process in no way alters 

the legal effect of this document upon 

publication in the Federal Register. 

Signed in Washington, DC, on August 20, 

2021. 

Treena V. Garrett, 

Federal Register Liaison Officer, U.S. 

Department of Energy. 

APPLICATION FOR WAIVER PER 10 

CFR 431.401 

WINE CELLAR COOLING EQUPIMENT 

LRC coil is requesting an interim and 

a permanent waiver from a DOE test 

procedure pursuant to provisions 

described in 10 CFR 431.401 for the 

following products on the grounds that 

either the basic model contains one or 

more design characteristics that prevent 

testing of the basic model according to 

the prescribed test procerus or the 

prescribed test procedures evaluate the 

basic model in a manner so 

unrepresentative of its true energy 

consumption characteristics has to 

provide materially inaccurate 

comparative data. DOE uniform test 

method for the measurement of energy 

consumption of walk-in coolers and 

walk-in freezer described in 10 CFR 

431.304 adopts the test standard set 

forth an AHRI 1250–2020. Our walk-in 

wine cellar cooling systems meet the 

definition of Walkin Cooler 

Refrigeration Systems. 

The design characteristics 

constituting the ground for the interim 

waiver application: 

Split cooling systems for walk-in wine 

cellars. Split cooling systems are 

designed to provide cold environments 

between 45 and 65 degrees Fahrenheit 

and maintain a relative humidity range 

within 50 to 7-% for properly insulated 

wine cellars. 

• These temperature and relative 

humidity ranges are optimized for longterm storage of wine mimicking that of 

natural caves. 

• Cooling systems consist of a remote 

condensing unit and an evaporator unit 

which are connected by liquid line and 

an insulated suction line. 

• These systems must be charged 

properly with refrigerant in the field by 

a licensed contractor. 

• These systems are available as 

indoor or outdoor uses with automatic 

off-cycle air defrost. 

• Wine cellars are usually located in 

air conditioned environments so the 

load is predominately steady state with 

out high and low load conditions. 

• Wine cellar cooling systems 

typically employ fractional compressors 

and automatic expansion valves to 

maintain the desired relative humidity 

in comparison to larger systems used in 

commercial WICF’s. 

AHRI 1250–2019 defines the test 

conditions of walkin cooler refrigeration 

systems at 35 degree Fahrenheit air 

temperature with less than 50% relative 

humidity. However wine cellar cooling 

systems are designed to maintain 

environments of 55°–65 degree and 

maintain 50 to 70% relative humidity. 

Wine cellar can cooling systems are 

optimized to operate within such 

temperature and relative humidity 

ranges that they can’t operate at a 35 

degree air temperature with a less than 

freezing suction temperature. 

Wine Cellars don’t have high and low 

load conditions and operate at steady 

state conditions during operation in a 

predominately air conditioned 

environment. So the AWEF calculation 

described in 10 CFR 431.304 and AHRI 

1250–2019 does not match the 

application of the such a system. 

Due to the design of the coils used in 

the units they cannot be operated at 

room/entering air temperatures of less 

than 45 deg F. 

The compressors used in wine cellar 

cooling systems are predominantly 

fractional horsepower which are 

inherently less efficient than larger 

compressors used in walkin cooler 

refrigeration systems. Therefore we do 

not believe there is technology on the 

market that will provide the needed 

energy efficiency and wine cellar 

cooling system to meet the minimum 

AWEF value for commercial walk-in 

cooler refrigeration systems set forth 

and 10 CFR 431.306. 

LRC brand basic models on which the 

waiver is being requested: 

Evaporator Only Models: 

• LRC brand SLA series—(consisting of 

SLA18–54Q, SLA28–108Q, SLA38– 

163Q, SLA48–217Q, SLA58–270Q, 

SLA68–322Q) 

• LRC brand SLPA—(consisting of 

SLPA–26–62Q, SLPA36–95Q, 

SLPA46–128Q, SLPA56–162Q, 

SLPA–66–200Q) 

• LRC brand DQ—(consisting of DQ– 

207, DQ–207C, DQ–275, DQ–275C, 

DQ–345, DQ–345C, DQ–432, DQ–541, 

DQ–650) 

• LRC brand LPAQ—(consisting of 

LPA17–10Q, LPA17–13Q, LPA27– 

18Q, LPA27–23Q, LPA37–32Q, 

LPA47–42Q, LPA57–55Q) 

• LRC brand Q—(consisting of Q–500W, 

Q–750W, Q–1000W, Q–1350W, Q– 

1640W, Q–2000W, Q–2600W) 

• LRC brand CE—(consisting of CE1– 

28Q, CE2–89Q, CE3–129Q) 

• LRC brand HS—(consisting of HS– 

25CLEC, HS–31CLEC, HS–47CLEC, 

HS–66CLEC, HS–87CLEC, HS– 

120CLEC, HS–25EC, HS–31EC, HS– 

47EC, HS–66EC, HS–87EC, HS– 

120EC, HS–180EC) 

• LRC brand RM—(consisting of RM– 

25EC, RM–35EC, RM–50EC, RM– 

65EC, RM–80EC) 

• LRC brand RMD—(consisting of 

RMD–25EC, RMD–35EC, RMD–50EC, 

RMD–65EC, RMD–80EC)—Ducted 

(max .1 in H2O external static) 

• LRC brand VAH—(consisting of 

VAH–25EC, VAH–31EC, VAH–47EC, 

VAH–66EC, VAH–87EC, VAH–120EC, 

VAH–180EC)—Ducted (max .25 in 

H2O external static) 

• LRC brand VRM—(consisting of 

VRM–25EC, VRM–35EC, VRM–50EC, 

VRM–65, VRM–80EC)—not ducted, 

located in room. 

• LRC brand BK—(consisting of BK17– 

40, BK27–60) 

• LRC brand CTIH—(consisting of 

CTIH–15, CTIH–25, CTIH–35, CTIH– 

50, CTIH–70) 

• LRC brand CTE—(consisting of CTE– 

15EC, CTE–25EC, CTE–35EC, CTE–50 

EC) 

• LRC brand WM—(consisting of WM– 

15, WM–25, WM–35, WM–50) 

Specific requirements sought to be 

waived: LRC Coil is petitioning for a 

waiver to exempt split walk-in wine 

cellar cooling systems from being tested 

to the current test procedure. The 

prescribed test procedure is not 

appropriate for these products for the 

reasons stated previously. 

List of manufacturers of all other 

basic models marketing in the United 

States and known to the petitioner to 

incorporate similar design 

characteristics. 

• Air Innovations 

• CellarPro 

• Whisperkool 

• Vinotemp/Winemate 


jbell on DSKJLSW7X2PROD with NOTICES
47640 Federal Register / Vol. 86, No. 163 / Thursday, August 26, 2021 / Notices 

Proposed alternate test procedure: 

• Use a correction factor of 0.55 to 

calculate the AWEF to adjust for average 

usage. 

• One load used to calculate AWEF. 

• Evaporator air entering temperature 

dry bulb of 55 °F for split cooling 

systems. 

• Evaporator air entering relative 

humidity 55% for split systems. 

• Setting airflow and static pressure 

for systems with ducted evaporator. Fan 

speed would be in accordance with 

manufacturers specifications. The 

external static pressure for testing 

would be set to 1⁄2 of the rated 

maximum external static with a 

tolerance of ¥0/+.05 in H2O. 

• For unit cooler style units for wine 

use above 45 degree F the same SST of 

38 deg F coil temperature, entering air 

temperature of 55 deg F and relative 

humidity of 55% will be used. Duty 

cycle and operating characteristics are 

the same as the other wine units. 

Success of the application for interim 

waiver and waiver: 

It will ensure that manufacturers of 

wine cellar cooling systems can 

continue to participate in the market. 

What economic hardship and/or 

competitive disadvantage are likely to 

absent a favorable determination on the 

application for interim waiver. 

Economic hardship will be loss of 

sales due to not meeting the DOE energy 

conservation standards set forth and 10 

CFR 431.306 if the existing products 

were altered in order to test for current 

requirements set forth in 10 CFR 

431.204 and AHRI 1250–2020, would 

add significant costs and increase 

energy consumption. 

Conclusion: 

LRC Coil requests an interim waiver 

and waiver from DOE’s current test 

method for the measurement of energy 

consumption of walk-in wine cellar 

split cooling systems. 

Respectfully submitted, 

Mike Williams P.E., 

LRC Coil Company, 3861 E 42nd Place, 

Yuma, AZ 85365. 

P: 562.944.1969 

F: 562.944.4979 

[FR Doc. 2021–18323 Filed 8–25–21; 8:45 am] 

BILLING CODE 6450–01–P 

DEPARTMENT OF ENERGY 

Federal Energy Regulatory 

Commission 

[Docket No. ER21–2715–000] 

Fairbanks Solar Energy Center LLC; 

Supplemental Notice That Initial 

Market-Based Rate Filing Includes 

Request for Blanket Section 204 

Authorization 

This is a supplemental notice in the 

above-referenced proceeding of 

Fairbanks Solar Energy Center LLC’s 

application for market-based rate 

authority, with an accompanying rate 

tariff, noting that such application 

includes a request for blanket 

authorization, under 18 CFR part 34, of 

future issuances of securities and 

assumptions of liability. 

Any person desiring to intervene or to 

protest should file with the Federal 

Energy Regulatory Commission, 888 

First Street NE, Washington, DC 20426, 

in accordance with Rules 211 and 214 

of the Commission’s Rules of Practice 

and Procedure (18 CFR 385.211 and 

385.214). Anyone filing a motion to 

intervene or protest must serve a copy 

of that document on the Applicant. 

Notice is hereby given that the 

deadline for filing protests with regard 

to the applicant’s request for blanket 

authorization, under 18 CFR part 34, of 

future issuances of securities and 

assumptions of liability, is September 9, 

2021. 

The Commission encourages 

electronic submission of protests and 

interventions in lieu of paper, using the 

FERC Online links at http://

www.ferc.gov. To facilitate electronic 

service, persons with internet access 

who will eFile a document and/or be 

listed as a contact for an intervenor 

must create and validate an 

eRegistration account using the 

eRegistration link. Select the eFiling 

link to log on and submit the 

intervention or protests. 

Persons unable to file electronically 

may mail similar pleadings to the 

Federal Energy Regulatory Commission, 

888 First Street NE, Washington, DC 

20426. Hand delivered submissions in 

docketed proceedings should be 

delivered to Health and Human 

Services, 12225 Wilkins Avenue, 

Rockville, Maryland 20852. 

In addition to publishing the full text 

of this document in the Federal 

Register, the Commission provides all 

interested persons an opportunity to 

view and/or print the contents of this 

document via the internet through the 

Commission’s Home Page (http://

www.ferc.gov) using the ‘‘eLibrary’’ link. 

Enter the docket number excluding the 

last three digits in the docket number 

field to access the document. At this 

time, the Commission has suspended 

access to the Commission’s Public 

Reference Room, due to the 

proclamation declaring a National 

Emergency concerning the Novel 

Coronavirus Disease (COVID–19), issued 

by the President on March 13, 2020. For 

assistance, contact the Federal Energy 

Regulatory Commission at 

FERCOnlineSupport@ferc.gov or call 

toll-free, (886) 208–3676 or TYY, (202) 

502–8659. 

Dated: August 20, 2021. 

Kimberly D. Bose, 

Secretary. 

[FR Doc. 2021–18380 Filed 8–25–21; 8:45 am] 

BILLING CODE 6717–01–P 

DEPARTMENT OF ENERGY 

Federal Energy Regulatory 

Commission 

[Docket No. ER21–2716–000] 

Fairbanks Solar Holdings LLC; 

Supplemental Notice That Initial 

Market-Based Rate Filing Includes 

Request for Blanket Section 204 

Authorization 

This is a supplemental notice in the 

above-referenced proceeding of 

Fairbanks Solar Energy Center LLC’s 

application for market-based rate 

authority, with an accompanying rate 

tariff, noting that such application 

includes a request for blanket 

authorization, under 18 CFR part 34, of 

future issuances of securities and 

assumptions of liability. 

Any person desiring to intervene or to 

protest should file with the Federal 

Energy Regulatory Commission, 888 

First Street NE, Washington, DC 20426, 

in accordance with Rules 211 and 214 

of the Commission’s Rules of Practice 

and Procedure (18 CFR 385.211 and 

385.214). Anyone filing a motion to 

intervene or protest must serve a copy 

of that document on the Applicant. 

Notice is hereby given that the 

deadline for filing protests with regard 

to the applicant’s request for blanket 

authorization, under 18 CFR part 34, of 

future issuances of securities and 

assumptions of liability, is September 9, 

2021. 

The Commission encourages 

electronic submission of protests and 

interventions in lieu of paper, using the 

FERC Online links at http://

www.ferc.gov. To facilitate electronic 

service, persons with internet access 

who will eFile a document and/or be 


jbell on DSKJLSW7X2PROD with NOTICES