Energy Conservation Program: Notification of Petition for Waiver of CellarPro From the Department of Energy Walk-In Coolers and Walk-in Freezers Test Procedure and Notification of Grant of Interim Waiver, 11972-11991 [2021-04062]
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a. First and foremost, due to the size of a
refrigeration system designed for a wine
cellar, WhisperKOOL uses fractionalhorsepower reciprocating compressors,
which are fundamentally more limited in
space and design, and are inherently less
efficient than larger compressors. For
example, WhisperKOOL’s most-sold cooling
unit uses an Embraco-brand compressor
which, at wine cellar conditions has an EER
of about 9.85 BTU/Wh. At the same
conditions, by comparison, a more-modern
scroll compressor rated at 1.8 HP has an EER
closer to 11 BTU/Wh. This is the case across
the board with WhisperKOOL fractionalhorsepower compressors (Embraco brand).
b. Additionally, some installs are difficult
and require the use of a duct-able unit. This
leads to the need for higher-wattage fans
being used in WhisperKOOL products,
further to the detriment of the overall energy
efficiency.
c. Some of the most efficient modern
compressors which operate in the fractionalhorsepower range use R290 as the refrigerant
(Propane). However, an R290 charging station
retrofit would be excessively invasive to
WhisperKOOL’s facility as well as too costly
to redesign all products in such a manner.
Success of the Application for Interim
Waiver Will
Success of the application for Interim
Waiver will ensure that manufacturers of
walk-in wine cellar cooling systems can
continue to participate in the market.
What Economic Hardship and/or
Competitive Disadvantage is Likely To
Result 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 in 10 CFR
431.306 if the existing products were altered
in order to test per current requirements set
forth in 10 CFR 431.304 and AHRI 1250, it
would add significant cost and increase
energy consumption.
Conclusion
WhisperKOOL seeks an Interim Waiver
from DOE’s current test method for the
measurement of energy consumption of walkin wine cellar Self-contained and Split
cooling systems.
Signed By:/s/ MChristian Bromme
Date: 12/1/2020
Title: Engineering Manager
[FR Doc. 2021–04112 Filed 2–26–21; 8:45 am]
BILLING CODE 6450–01–P
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DEPARTMENT OF ENERGY
[Case Number 2019–009; EERE–2019–BT–
WAV–0028]
Energy Conservation Program:
Notification of Petition for Waiver of
CellarPro From the Department of
Energy Walk-In Coolers and Walk-in
Freezers Test Procedure and
Notification of Grant of Interim Waiver
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.
AGENCY:
This document announces
receipt of and publishes a petition for
waiver and interim waiver from
CellarPro, which seeks a waiver for
specified walk-in cooler refrigeration
system 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 CellarPro to
test and rate the specified walk-in cooler
refrigeration system basic models in
accordance with the alternate test
procedure set forth in the Interim
Waiver Order, which modifies the
alternate test procedure suggested by
CellarPro. DOE solicits comments, data,
and information concerning CellarPro’s
petition, its suggested alternate test
procedure, and the alternate test
procedure specified in the Interim
Waiver Order so as to inform DOE’s
final decision on CellarPro’s waiver
request.
SUMMARY:
The Interim Waiver Order is
effective on March 1, 2021. Written
comments and information will be
accepted on or before March 31, 2021.
ADDRESSES: Interested persons are
encouraged to submit comments using
the Federal eRulemaking Portal at
https://www.regulations.gov.
Alternatively, interested persons may
submit comments, identified by case
number ‘‘2019–009’’, and Docket
number ‘‘EERE–2019–BT–WAV–0028,’’
by any of the following methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the
instructions for submitting comments.
• Email: CellarPro2019WAV0028@
ee.doe.gov. Include Case No. 2019–009
in the subject line of the message.
• Postal Mail: Appliance and
Equipment Standards Program, U.S.
Department of Energy, Office of Energy
Efficiency and Renewable Energy,
Building Technologies Office, Mail Stop
DATES:
PO 00000
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EE–5B, Petition for Waiver Case No.
2019–009, 1000 Independence Avenue
SW, Washington, DC 20585–0121. If
possible, please submit all items on a
compact disc (‘‘CD’’), in which case it is
not necessary to include printed copies.
• Hand Delivery/Courier: Appliance
and Equipment Standards Program, U.S.
Department of Energy, Building
Technologies Office, 950 L’Enfant Plaza
SW, 6th floor, Washington, DC 20024.
Telephone: (202) 287–1445. If possible,
please submit all items on a ‘‘CD’’, in
which case it is not necessary to include
printed copies.
No telefacsimilies (‘‘faxes’’) will be
accepted. For detailed instructions on
submitting comments and additional
information on this process, see the
SUPPLEMENTARY INFORMATION section of
this document.
Docket: The docket, which includes
Federal Register notices, comments,
and other supporting documents/
materials, is available for review at
https://www.regulations.gov. All
documents in the docket are listed in
the https://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
https://www.regulations.gov/
docket?D=EERE-2019-BT-WAV-0028.
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
https://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@hq.doe.gov.
SUPPLEMENTARY INFORMATION: DOE is
publishing CellarPro’s petition for
waiver in its entirety in appendix 1 to
this document, pursuant to 10 CFR
431.401(b)(1)(iv).1 DOE invites all
interested parties to submit in writing
by March 31, 2021, comments and
1 The petition did not identify any of the
information contained therein as confidential
business information.
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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: Keith Sedwick, keith@
cellarprocoolingsystems.com, 1445 N
McDowell Blvd., Petaluma, CA 94954.
Submitting comments via https://
www.regulations.gov. The https://
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 https://
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 https://
www.regulations.gov cannot be claimed
as CBI. Comments received through the
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 https://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 https://
www.regulations.gov provides after you
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have successfully uploaded your
comment.
Submitting comments via email, hand
delivery/courier, or postal mail.
Comments and documents submitted
via email, hand delivery/courier, or
postal mail also will be posted to https://
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. If you
submit via postal mail or hand delivery/
courier, please provide all items on a
CD, if feasible, in which case it is not
necessary to submit printed copies.
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, postal mail, or
hand delivery/courier two well-marked
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.
Submit these documents via email or on
a CD, if feasible. 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
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provided in the comments (except
information deemed to be exempt from
public disclosure).
Case Number 2019–009
Interim Waiver Order
I. Background and Authority
The Energy Policy and Conservation
Act, as amended (‘‘EPCA’’),2 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 3 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 the
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
subject of this Interim Waiver Order. (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), test procedures (42 U.S.C. 6314),
labeling provisions (42 U.S.C. 6315),
energy conservation standards (42
U.S.C. 6313), and the authority to
require information and reports from
manufacturers (42 U.S.C. 6316).
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
2 All 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).
3 For editorial reasons, upon codification in the
U.S. Code, Part C was redesignated as Part A–1.
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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, 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. See 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
equipment type in a manner
representative of its energy
consumption characteristics of the basic
model. See 10 CFR 431.401(b)(1)(iii).
DOE may grant the waiver subject to
conditions, including adherence to
alternate test procedures. See 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
regulations so as to eliminate any need
for the continuation of such waiver. See
10 CFR 431.401(1). 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. See 10 CFR
431.401(e)(2). Within one year of
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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. See 10 CFR
431.401(h)(1).
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. See 10 CFR
431.401(h)(2).
II. CellarPro’s Petition for Waiver and
Application for Interim Waiver
DOE received a petition from
CellarPro dated September 13, 2019
seeking an interim waiver from the test
procedure for walk-in cooler and walkin freezer refrigeration systems set forth
at Appendix C (CellarPro, No. 1 at p. 1).4
The waiver process under 10 CFR
431.401 requires that a petitioner must
request a waiver for there to be
consideration of a petition for an
interim waiver. CellarPro later
confirmed in a May 22, 2020 email that
its petition should also be considered as
a petition for waiver (CellarPro, No. 4).
The primary assertion in the petition,
absent an interim waiver, is that 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 CellarPro’s petition, the
specified basic models of walk-in cooler
refrigeration systems operate at a
temperature range of 45–65 °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. CellarPro also states
that the specified basic models are
‘‘wine cellar cooling systems’’ that
operate at temperature and relative
humidity ranges optimized for the longterm storage of wine and are usually
located in air-conditioned spaces.
CellarPro contends that because of these
characteristics, wine cellar walk-in
refrigeration systems differ in their
4 A notation in the form ‘‘CellarPro, No. 1’’
identifies a written submission: (1) Made by
CellarPro; and (2) recorded in document number 1
that is filed in the docket of this petition for waiver
(Docket No. EERE–2019–BT–WAV–0028) and
available at https://www.regulations.gov.
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walk-in box temperature setpoint, walkin box relative humidity, low/high load
split,5 and compressor efficiency from
other walk-in cooler refrigeration
systems.
CellarPro states that the specified
basic models are designed to provide a
cold environment at a temperature range
between 45–65 °F with 50–70 percent
relative humidity (‘‘RH’’), and typically
are kept at 55 °F rather than the 35 °F
and <50 percent RH test condition
prescribed by the DOE test procedure.
CellarPro states that the refrigeration
systems are designed solely for the
purpose of long-term cooling and
storage of wine. CellarPro also asserts
that operating a wine cellar 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.
Additionally, a number of the basic
models of walk-in refrigeration systems
identified in CellarPro’s waiver petition
are ‘‘self-contained’’ or single-package
systems. In its request for waiver,
CellarPro states that these systems have
a small footprint and that testing these
systems using the refrigerant enthalpy
method in AHRI 1250–2009 is complex
since mass flow meters would need to
be installed in parts of the system with
minimal space. DOE recognizes that
because of their single-package design,
these basic models have insufficient
space within the units and insufficient
lengths of liquid line and evaporator
outlet line for the dual mass flow meters
and the dual temperature and pressure
measurements required by the test
procedure’s refrigerant enthalpy
method. As noted by CellarPro, AHRI
1250–2009 does not include specific
provisions for testing single-package
systems and testing these basic models
using the refrigerant enthalpy method as
required by Appendix C would require
extensive additional piping to route the
pipes out of the system where the
components can be installed, and then
to route them back in to enable the
5 The 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.
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system to operate during testing.6 This
additional piping would impact unit
performance, likely be inconsistent
between test labs, and result in
unrepresentative test values for the unit
under test. AHRI has published a
revised version of the test standard that
provides provisions for single-package
systems without requiring extensive
additional piping (AHRI 1250–2020,
2020 Standard for Performance Rating
of Walk-in Coolers and Freezers). As
discussed below, the interim waiver
alternative test procedure presented for
comment in this notification adopts the
new test methods included in AHRI
1250–2020 for single-package units.
DOE has received multiple waiver
and interim waiver requests from wine
cellar manufacturers regarding the
limitations of Appendix C. In light of
these requests, DOE met with the AHRI
and wine cellar walk-in 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’’).7 This letter documents
industry support for specific wine cellar
walk-in 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 walk-in
wine cellar refrigeration systems at an
external static pressure (‘‘ESP’’) 8 of 50
percent of the maximum ESP to be
specified by manufacturers for each
6 In a waiver granted to Store It Cold for certain
models of single-package units, DOE acknowledged
a similar issue in which the additional piping
necessary to install the required testing components
would affect performance of the units, rendering the
results unrepresentative. See 84 FR 39286 (Aug. 9,
2019). In the case of the waiver granted to Store It
Cold, the refrigerant enthalpy method yielded
inaccurate data for the specified basic models
compared to the basic models’ true performance
characteristics because of the additional piping
required to attach the testing components required
by the refrigerant enthalpy test. The same issues are
present for the specified single package system
basic models included in CellarPro’s waiver
petition.
7 DOE’s meetings with CellarPro and other wine
cellar refrigeration systems 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–2019–BT–WAV–0028–0005.
8 External static pressure is the sum of all the
pressure resisting the fans. Here, this is chiefly the
resistance generated by the air moving through
ductwork.
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basic model (AHRI August 2020 Letter)
is also included.
Accordingly, CellarPro submitted an
updated petition for waiver and interim
waiver on October 2, 2020 (CellarPro,
No. 6). The updated petition states that
all basic models listed in the petition for
waiver and interim waiver have a
minimum operating temperature of
45 °F and provides maximum ESP
values for specified ducted selfcontained and ducted split system basic
models.
CellarPro 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.
See 10 CFR 431.401(e)(2).
III. Requested Alternate Test Procedure
EPCA requires that manufacturers use
the applicable 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 products and equipment,
including when demonstrating
compliance with applicable DOE energy
conservation standards. Pursuant to its
regulations at 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.
CellarPro seeks to use an approach
that would test and rate specific wine
cellar walk-in refrigeration system 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. CellarPro
does not specify air return relative
humidity in their petition, though they
do state that the subject basic models
are designed to maintain relative
humidity between 50 and 70 percent.
Additionally, CellarPro requests that a
correction factor of 0.55 be applied to
the final AWEF calculation to account
for the different use and load patterns of
the specified basic models as compared
to walk-in cooler refrigeration systems
generally. CellarPro cited the use of
such a correction factor for coolers 9 and
9 A cooler is a cabinet, used with one or more
doors, that has a source of refrigeration capable of
operating on single-phase, alternating current and is
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combination cooler refrigeration
products under DOE’s test procedure for
miscellaneous refrigeration products at
10 CFR part 430, subpart B, appendix A.
IV. Interim Waiver Order
DOE has reviewed CellarPro’s
application, its suggested testing
approach, representations of the
specified basic models on the website
for the CellarPro brand, related product
catalogs, and information provided by
CellarPro and other wine cellar walk-in
refrigeration system manufacturers in
meetings with DOE. Based on this
review, DOE is granting an interim
waiver that requires testing with a
modified version of the testing approach
suggested by CellarPro.
The modified testing approach would
apply to the models specified in
CellarPro’s waiver petition that include
two categories of WICF refrigeration
systems, i.e., single package and split
(matched) systems. The first 17 basic
models listed in CellarPro’s table
(1800QTL through 8200VS) are singlepackage systems. All of the single
package basic models can be installed
either through the wall of a wine cellar
or on top of a wine cellar, and the VS
series basic models can additionally be
ducted to the wine cellar. The ducted
configuration is designed to be installed
remotely from the wine cellar and
provide cooling by circulating air
through ducts from the wine cellar to
the unit and back. The remaining basic
models (3000S through AH24Sx) are
split (matched) systems, in which
refrigerant circulates between the
‘‘evaporator unit’’ (unit cooler) portion
of the unit and the ‘‘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
coil of the ducted split (matched)
system circulates air through ducts from
the wine cellar to the evaporator coil
and back to provide cooling, while the
evaporator coil of the ductless split
(matched) systems is installed either
partially or entirely in the wine cellar,
allowing direct cooling. The capacity
range of the specified basic models is
from 1,065 Btu/h to 17,500 Btu/h for the
specified operating conditions for each
of the models (CellarPro, No.8).10
capable of maintaining compartment temperatures
either: (1) No lower than 39 °F (3.9 °C); or (2) In a
range that extends no lower than 37 °F (2.8 °C) but
at least as high as 60 °F (15.6 °C). 10 CFR 430.2.
10 The specified operating temperatures are 55 °F
cold-side air entering and 85 °F warm-side air
entering. Capacities at specified operating
conditions are included in the ‘‘2020 CellarPro
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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 CellarPro for the specified basic
models listed in the petition is based
upon CellarPro’s representation 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.
The alternate test procedure also
specifies that the capacity measurement
for the specified basic models that are
single-package systems (17 basic models
1800QTL through 8200VS) be
conducted using a primary and a
secondary capacity measurement
method as specified in AHRI 1250–
2020, using two of the following: The
indoor air enthalpy method; the outdoor
air enthalpy method; the compressor
calibration method; the indoor room
calorimeter method; the outdoor room
calorimeter method; or the balanced
ambient room calorimeter method.
The required alternate test procedure
also includes the following additional
modifications to CellarPro’s suggested
approach: For systems that can be
installed with (1) ducted evaporator air,
(2) with or without ducted evaporator
air, (3) ducted condenser air, or (4) with
or without ducted condenser 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.11 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 what ESP
would be imposed on the unit in field
operation.12 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 13 using duct lengths and
diameters published in CellarPro’s
installation manuals (CellarPro, No. 11).
DOE’s calculations show reasonable
agreement with the maximum ESP
values provided by CellarPro 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 CellarPro 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 basic models with
condensing or evaporator units that are
not designed for the ducting of air, this
design characteristic must be clearly
stated.
Additionally, if there are multiple
condenser or evaporator unit fan speed
settings, the speed setting used would
be as instructed in the unit’s installation
instructions. 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
either by symmetrically restricting the
outlet duct 14 or, if using the indoor air
enthalpy method, by adjusting the
airflow measurement apparatus blower.
The alternate test procedure also
describes the requirements for
measurement of ESP consistent with
provisions provided in AHRI 1250–2020
when using the indoor air enthalpy
method with unit coolers.
Additionally, the alternate test
procedure indicates that specified basic
models that are split systems must be
Product Performance List’’ provided in docket No.
EERE–2019–BT–WAV–0028.
11 Inches of water column (‘‘in. wc’’) is a unit of
pressure conventionally used for measurement of
pressure differentials.
12 The 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.
13 Calculations 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 https://
www.osti.gov/servlets/purl/836654 (Docket No.
EERE–2019–BT–WAV–0028–0013) and available at
https://www.regulations.gov.
14 This 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.
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tested as matched pairs. According to
CellarPro’s petition, the walk-in
refrigeration system basic models that
are split-systems are sold as full systems
(i.e., matched pairs) rather than as
individual unit cooler and condensing
unit components. This Interim Waiver
Order provides no direction regarding
refrigerant line connection operating
conditions, and as such is inapplicable
to testing the basic models as individual
components. Consequently, the Interim
Waiver Order addresses only matchedpair testing of the specified basic
models that are split-systems.
DOE notes that, despite the request
from CellarPro, it is not including a 0.55
correction factor in the alternate test
procedure required by the Interim
Waiver Order. The company claimed
that such a factor would correct for
differences in wine cellar refrigeration
system fan power, compressor
efficiency, and run time and load
conditions. CellarPro also observed that
the test procedure in appendix A to
subpart B of 10 CFR part 430
(‘‘Appendix A’’), includes such a factor
to account for the difference in use and
loading patterns of coolers (e.g., selfcontained wine chiller cabinets) as
compared to other residential
refrigeration products and sought to
include a factor as part of its petition.
Coolers, like other residential
refrigeration products, are tested in a
90 °F room without door openings
(section 2.1.1 of Appendix A). The
intent of the energy test procedure for
residential refrigeration products is to
simulate operation in typical room
conditions (72 °F) with door openings
by testing at 90 °F ambient temperature
without door openings. 10 CFR
430.23(ff)(7). In section 5.2.1.1 of
Appendix A, a correction factor of 0.55
is applied to the measured energy
consumption of coolers so that
measuring energy consumption at 90 °F
ambient temperature without door
openings provides test results that are
representative of consumer usage at
72 °F ambient temperature with door
openings. Specifically, the 0.55
correction factor reflects that (1) closeddoor operation of self-contained coolers
in typical 72 °F room conditions results
in an average energy consumption 0.46
times the value measured at the 90 °F
ambient temperature specified by the
test procedure; and (2) expected door
openings of a self-contained wine
chiller would add an additional 20%
thermal load. Multiplying 0.46 by 1.2
results in the overall correction factor of
0.55. See 81 FR 46768, 46782 (July 18,
2016) (final rule for miscellaneous
refrigeration products).
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In contrast, these same closed-door
conditions on which the miscellaneous
refrigeration correction factor is based
are not present in the test procedure for
walk-in cooler refrigeration systems.
The WICF test procedure does not
provide for closed-door testing at
elevated ambient temperatures as the
test procedure for residential
refrigeration products does because
walk-ins are tested and rated by
component, with a walk-in refrigeration
system tested and rated separately from
a walk-in enclosure (panels and doors).
See 76 FR 21580. Walk-in refrigeration
load is set by using a representative
ratio of box load to capacity (see
discussion below). As a result, applying
the 0.55 correction factor as suggested
by CellarPro is not appropriate for the
specified basic models.
Further, CellarPro asserted that the
suggested 0.55 correction factor was to
address the differences in run time and
compressor inefficiency of the specified
basic models as compared to walk-in
cooler refrigeration systems more
generally. It suggested that the run time
for wine cellar walk-in refrigeration
systems ranges from 50 to 75 percent.
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 in the range suggested
by CellarPro as being representative for
the specified basic models. As
previously discussed, walk-in energy
consumption is determined by
component, with separate test
procedures for walk-in 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 refrigeration
systems. Accordingly, DOE has declined
to adopt a correction factor for the
equipment at issue.
Based on DOE’s review of CellarPro’s
petition, the required alternate test
procedure laid out 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
CellarPro’s implementation of wine
cellar walk-in refrigeration system
testing for these basic models.
Consequently, DOE has determined that
CellarPro’s petition for waiver will
likely be granted. Furthermore, DOE has
determined that it is desirable for public
policy reasons to grant CellarPro
immediate relief pending a
determination of the petition for waiver.
For the reasons stated, it is ordered
that:
(1) CellarPro must test and rate the
following CellarPro-branded wine cellar
walk-in refrigeration system basic
models 15 with the alternate test
procedure set forth in paragraph (2).
CELLARPRO BASIC MODELS
Basic model
Catalog models under basic model
group
1800QTL ...........................................
1800QT .............................................
1800XT ..............................................
1800XTS ...........................................
1800XTSx .........................................
1800XT 220V ....................................
1800XTS 220V ..................................
1800XTx 220V ..................................
1800H ................................................
1800H 220V ......................................
2000VS .............................................
2000VS 220V ....................................
3200VS .............................................
4200VS .............................................
1800QTL, 1800QTL–L .....................
Same ................................................
Same ................................................
1800XTS, 1800XTS–B .....................
Same ................................................
Same ................................................
Same ................................................
Same ................................................
Same ................................................
Same ................................................
2000VSi, 2000VSx ...........................
2000VSi 220V, 2000VSx 220V ........
3200VSi, 3200VSx ...........................
4200VSi, 4200VSx, 4200VSi-B,
4200VSi-L.
4200VSi 220V, 4200VSx 220V ........
6200VSi, 6200VSx ...........................
8200VSi, 8200VSx ...........................
3000S, 3000Sqc ...............................
Same ................................................
Same ................................................
3000Sh, 3000Shqc ...........................
4000S, 4000Sqc ...............................
Same ................................................
Same ................................................
Same ................................................
4000Sh, 4000Shqc ...........................
4200VS 220V ....................................
6200VS .............................................
8200VS .............................................
3000S ................................................
3000Scm ...........................................
3000Scmr ..........................................
3000Sh ..............................................
4000S ................................................
4000S 220V ......................................
4000Scm ...........................................
4000Scmr ..........................................
4000Sh ..............................................
15 Basic model 2000VS was initially included
twice in CellarPro’s petition, prior to a clarifying
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Minimum
operating
temperature
(°F)
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Maximum
evaporator
fan external
static
pressure
(inwg)
Maximum
condenser
fan external
static
pressure
(inwg)
45
45
45
45
45
45
45
45
51
51
45
45
45
45
65
65
65
65
65
65
65
65
65
65
65
65
65
65
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.09
0.09
0.19
0.19
0.25
0.25
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.09
0.09
0.19
0.19
0.25
0.25
45
45
45
45
47
45
45
45
45
47
45
45
65
65
65
65
65
65
65
65
65
65
65
65
0.25
0.25
0.25
0.25
0.00
0.25
0.25
0.25
0.25
0.00
0.25
0.25
0.25
0.25
0.25
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
email on October 26, 2020 from CellarPro stating
PO 00000
Maximum
operating
temperature
(°F)
that this repeated model was intended to be basic
model 2000VS 220V (CellarPro, No. 7).
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CELLARPRO BASIC MODELS—Continued
Basic model
Catalog models under basic model
group
4000Shwc .........................................
4000Swc ...........................................
6000S ................................................
Same ................................................
Same ................................................
Same ................................................
(2) The alternate test procedure for the
CellarPro 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 to Subpart
R, and DOE’s regulations remain
applicable.
In Appendix C to Subpart R, revise
section 3.1.1 (which specifies
Minimum
operating
temperature
(°F)
Maximum
operating
temperature
(°F)
45
45
45
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.
Maximum
evaporator
fan external
static
pressure
(inwg)
65
65
65
Maximum
condenser
fan external
static
pressure
(inwg)
0.25
0.25
0.25
0.00
0.00
0.00
In Appendix C to Subpart R, revise
section 3.1.4 (which specifies
modifications to AHRI 1250–2009) and
add modifications of AHRI 1250–2009
Tables 3 and 4 to read:
3.1.4. In Tables 3 and 4 of AHRI
1250–2009, Section 5, the Condenser
Air Entering Wet-Bulb Temperature
requirement applies only to singlepackaged dedicated systems. Tables 3
and 4 shall be modified to read:
TABLE 3—FIXED CAPACITY MATCHED REFRIGERATOR SYSTEM AND SINGLE-PACKAGED DEDICATED SYSTEM, CONDENSING
UNIT LOCATED INDOOR
Test description
Unit cooler
air entering
dry-bulb,
°F
Unit cooler
air entering
relative
humidity,
%1
Condenser
air entering
dry-bulb,
°F
Maximum
condenser
air entering
wet-bulb,
°F
Compressor
status
Test objective
Measure fan input wattage.2
Determine Net Refrigeration Capacity of
Unit Cooler, input
power, and EER at
Rating Condition.
Evaporator Fan Power ..
55
55
........................
........................
....................................
Refrigeration Capacity ..
55
55
90
3 65
Compressor On .........
Notes:
1 The test condition tolerance (maximum permissible variation of the average value of the measurement from the specified test condition) for
relative humidity is 3%.
2 Measure fan input wattage either by measuring total system power when the compressor and condenser are turned off or by separately submetering the evaporator fan.
3 Maximum allowable value for Single-Packaged Systems that do not use evaporative Dedicated Condensing Units, where all or part of the
equipment is located in the outdoor room.
TABLE 4—FIXED CAPACITY MATCHED REFRIGERATOR SYSTEM AND SINGLE-PACKAGED DEDICATED SYSTEM, CONDENSING
UNIT LOCATED OUTDOOR
Test description
Unit cooler
air entering
dry-bulb,
°F
Unit cooler
air entering
relative
humidity,
%1
Condenser
air entering
dry-bulb,
°F
Maximum
condenser
air entering
wet-bulb,
°F
Compressor
status
Test objective
Measure fan input wattage.2
Determine Net Refrigeration Capacity of
Unit Cooler, input
power, and EER at
Rating Condition.
Determine Net Refrigeration Capacity of
Unit Cooler and system input power at
moderate condition.
Evaporator Fan Power ..
55
55
........................
........................
....................................
Refrigeration Capacity A
55
55
95
3 68
Compressor On .........
Refrigeration Capacity B
55
55
59
3 46
Compressor On .........
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TABLE 4—FIXED CAPACITY MATCHED REFRIGERATOR SYSTEM AND SINGLE-PACKAGED DEDICATED SYSTEM, CONDENSING
UNIT LOCATED OUTDOOR—Continued
Test description
Unit cooler
air entering
dry-bulb,
°F
Refrigeration Capacity C
Unit cooler
air entering
relative
humidity,
%1
55
Condenser
air entering
dry-bulb,
°F
55
Maximum
condenser
air entering
wet-bulb,
°F
35
3 29
Compressor
status
Compressor On .........
Test objective
Determine Net Refrigeration Capacity of
Unit Cooler and system input power at
cold condition.
Notes:
1 The test condition tolerance (maximum permissible variation of the average value of the measurement from the specified test condition) for
relative humidity is 3%.
2 Measure fan input wattage either by measuring total system power when the compressor and condenser are turned off or by separately submetering the evaporator fan.
3 Maximum allowable value for Single-Packaged Dedicated Systems that do not use evaporative Dedicated Condensing Units, where all or part
of the equipment is located in the outdoor room.
In Appendix C to Subpart R,
following section 3.2.5 (instructions
regarding modifications to AHRI 1250–
2009), add sections 3.2.6 and 3.2.7 to
read:
3.2.6 The purpose in section C1 of
appendix C is modified by extending it
to include Single-Packaged Dedicated
Systems.
3.2.7 For general test conditions and
data recording (appendix C, section C7),
the test acceptance criteria in Table 2
and the data to be recorded in Table C2
apply to the Dual Instrumentation and
Calibrated Box methods of test.
In Appendix C to Subpart R, revise
section 3.3 to read:
3.3. Matched systems, singlepackaged dedicated systems, and unit
coolers tested alone: Test any split
system wine cellar walk-in refrigeration
system as a matched pair. Any
condensing unit or unit cooler
component must be matched with a
corresponding counterpart for testing.
Use the test method in AHRI 1250–2009
(incorporated by reference; see
§ 431.303), appendix C as the method of
test for matched refrigeration systems,
single-packaged dedicated systems, or
unit coolers tested alone, with the
following modifications:
*
*
*
*
*
In Appendix C to Subpart R, revise
sections 3.3.3 through 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 compressors and
condenser fan of the walk-in system is
turned off, or by submetered
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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,
following section 3.3.7.2, add new
sections 3.3.8, 3.3.9, and 3.3.10 to read:
3.3.8. Measure power and capacity of
single-packaged dedicated systems as
described in sections C4.1.2 and C9 of
AHRI 1250–2020. The third and fourth
sentences of Section C9.1.1.1 of AHRI
1250–2020 (‘‘Entering air is to be
sufficiently dry as to not produce frost
on the Unit Cooler coil. Therefore, only
sensible capacity measured by dry bulb
change shall be used to calculate
capacity.’’) shall not apply.
3.3.9. For systems 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
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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. If testing with the indoor
air enthalpy method, adjust the airflow
measurement apparatus fan to set the
external static pressure—otherwise, set
the external static pressure by
symmetrically restricting the outlet of
the test duct. In case of conflict, these
requirements for setting evaporator
airflow take precedence over airflow
values specified in manufacturer
installation instructions or product
literature.
3.3.10. For systems with ducted
condenser air, or that can be installed
with or without ducted condenser 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. If testing with the outdoor
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enthalpy method, adjust the airflow
measurement apparatus fan to set the
external static pressure—otherwise, set
the external static pressure by
symmetrically restricting the outlet of
the test duct. In case of conflict, these
requirements for setting condenser
airflow take precedence over airflow
values specified in manufacturer
installation instructions or product
literature. If testing using the outdoor air
enthalpy method, the requirements of
section 8.6 of ASHRAE 37–2009 are not
applicable.
In Appendix C to Subpart R, revise
section 3.3.6 (which specifies
modifications to AHRI 1250–2009) to
read:
3.3.6. AWEF is calculated on the basis
that walk-in box load is equal to half of
the system net capacity, without
variation according to high and low load
periods and without variation with
outdoor air temperature for outdoor
refrigeration systems, and the test must
be done as a matched or single-package
refrigeration system, as follows:
For Indoor Condensing Units:
(3) Representations. CellarPro may not
make representations about the
efficiency of a basic model listed in
paragraph (1) of this Interim Waiver
Order for compliance, marketing, or
other purposes unless that basic model
has been tested in accordance with the
provisions set forth above and such
representations fairly disclose the
results of such testing.
(4) This interim waiver 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 CellarPro are valid. If CellarPro
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 CellarPro 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, CellarPro
may request that DOE rescind or modify
the Interim Waiver Order if CellarPro
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).
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(6) Issuance of this Interim Waiver
Order does not release CellarPro from
the certification 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.
CellarPro 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, CellarPro
may request that DOE extend the scope
of a waiver or an interim waiver to
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include additional basic models
employing the same technology as the
basic model(s) set forth in the original
petition consistent with 10 CFR
431.401(g).
Signing Authority
This document of the Department of
Energy was signed on February 22,
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 Acting Secretary of Energy.
That document with the original
signature and date is maintained by
DOE. For administrative purposes only,
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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 February 23,
2021.
Treena V. Garrett,
Federal Register Liaison Officer, U.S.
Department of Energy.
BILLING CODE 6450–01–P
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[FR Doc. 2021–04062 Filed 2–26–21; 8:45 am]
BILLING CODE 6450–01–C
DEPARTMENT OF ENERGY
Energy Information Administration
Agency Information Collection
Extension
U.S. Energy Information
Administration (EIA), U.S. Department
of Energy (DOE).
AGENCY:
ACTION:
Notice.
EIA submitted an information
collection request for extension as
required by the Paperwork Reduction
Act of 1995. The information collection
requests a three-year extension with
changes of its Uranium Data Program
(UDP), OMB Control Number 1905–
0160. The UDP consists of three
surveys. Form EIA–851A Domestic
Uranium Production Report (Annual)
collects annual data from the U.S.
uranium industry on uranium milling
and processing, uranium feed sources,
uranium mining, employment, drilling,
expenditures, and uranium reserves.
Form EIA–851Q Domestic Uranium
Production Report (Quarterly) collects
monthly data on uranium production
that is reported on a quarterly basis.
Form EIA–858 Uranium Marketing
Annual Survey collects annual data
from the U.S. uranium market on
uranium contracts and deliveries,
inventories, enrichment services
purchased, uranium in fuel assemblies,
feed deliveries to enrichers, and unfilled
SUMMARY:
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market requirements for the current year
and the following ten years.
DATES: Comments on this information
collection must be received no later
than March 31, 2021. Written comments
and recommendations for the proposed
information collection should be sent
within 30 days of publication of this
notice to www.reginfo.gov/public/do/
PRAMain. Find this particular
information collection by selecting
‘‘Currently under 30-day Review—Open
for Public Comments’’ or by using the
search function.
FOR FURTHER INFORMATION CONTACT: If
you need additional information,
contact Tim Shear, U.S. Energy
Information Administration, telephone
(202) 586–0503, or by email at
Tim.Shear@eia.gov. The forms and
instructions are available on EIA’s
website at www.eia.gov/survey/changes/
uranium/2020.
SUPPLEMENTARY INFORMATION: This
information collection request contains:
(1) OMB No.: 1905–0160;
(2) Information Collection Request
Title: Uranium Data Program;
(3) Type of Request: Three-year
extension with changes;
(4) Purpose: Uranium Data Program
collects data on domestic uranium
supply and demand activities, including
production, exploration and
development, trade, purchases and sales
available to the U.S. The users of these
data include Congress, Executive
Branch agencies, the nuclear and
uranium industry, electric power
industry, and the public. Form EIA–
851A data are published in EIA’s
Domestic Uranium Production Report—
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11991
Annual at https://www.eia.gov/uranium/
production/annual/. Form EIA–851Q
data are published in EIA’s Domestic
Uranium Production Report—Quarterly
at https://www.eia.gov/uranium/
production/quarterly/. Form EIA–858
data are published in EIA’s Uranium
Marketing Annual Report at https://
www.eia.gov/uranium/marketing/ and
Domestic Uranium Production Report—
Annual at https://www.eia.gov/uranium/
production/annual/;
(4a) Change to information collection:
EIA will no longer protect information
reported on Form EIA–851A and EIA–
851Q under the Confidential
Information Protection and Statistical
Efficiency Act of 2018 (CIPSEA).
Information reported on Form EIA–858
will continue to be protected under
CIPSEA.
EIA proposes to apply exemptions
under the Freedom of Information Act
(FOIA) to protect information reported
on Forms EIA–851A and EIA–851Q
except for production data. Production
data will be considered public and may
be publicly released in an identifiable
form. For the past six years, the items
‘‘Respondent and Contact
Identification’’, ‘‘Company Name’’, and
all of ‘‘Item 1: Facility Information’’ on
Forms EIA–851Q and EIA–851A are
considered public information and are
publicly released in company or
individually identifiable form on EIA’s
website. Data protection methods will
continue to be applied to the statistical
information reported on Forms EIA–
851A and EIA–851Q, except for
production data.
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]]>Agencies
[Federal Register Volume 86, Number 38 (Monday, March 1, 2021)]
[Notices]
[Pages 11972-11991]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-04062]
-----------------------------------------------------------------------
DEPARTMENT OF ENERGY
[Case Number 2019-009; EERE-2019-BT-WAV-0028]
Energy Conservation Program: Notification of Petition for Waiver
of CellarPro 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 CellarPro, which seeks a waiver for
specified walk-in cooler refrigeration system 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 CellarPro to test and rate the specified walk-in cooler
refrigeration system basic models in accordance with the alternate test
procedure set forth in the Interim Waiver Order, which modifies the
alternate test procedure suggested by CellarPro. DOE solicits comments,
data, and information concerning CellarPro's petition, its suggested
alternate test procedure, and the alternate test procedure specified in
the Interim Waiver Order so as to inform DOE's final decision on
CellarPro's waiver request.
DATES: The Interim Waiver Order is effective on March 1, 2021. Written
comments and information will be accepted on or before March 31, 2021.
ADDRESSES: Interested persons are encouraged to submit comments using
the Federal eRulemaking Portal at https://www.regulations.gov.
Alternatively, interested persons may submit comments, identified by
case number ``2019-009'', and Docket number ``EERE-2019-BT-WAV-0028,''
by any of the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the instructions for submitting comments.
Email: [email protected]. Include Case No.
2019-009 in the subject line of the message.
Postal Mail: Appliance and Equipment Standards Program,
U.S. Department of Energy, Office of Energy Efficiency and Renewable
Energy, Building Technologies Office, Mail Stop EE-5B, Petition for
Waiver Case No. 2019-009, 1000 Independence Avenue SW, Washington, DC
20585-0121. If possible, please submit all items on a compact disc
(``CD''), in which case it is not necessary to include printed copies.
Hand Delivery/Courier: Appliance and Equipment Standards
Program, U.S. Department of Energy, Building Technologies Office, 950
L'Enfant Plaza SW, 6th floor, Washington, DC 20024. Telephone: (202)
287-1445. If possible, please submit all items on a ``CD'', in which
case it is not necessary to include printed copies.
No telefacsimilies (``faxes'') will be accepted. For detailed
instructions on submitting comments and additional information on this
process, see the SUPPLEMENTARY INFORMATION section of this document.
Docket: The docket, which includes Federal Register notices,
comments, and other supporting documents/materials, is available for
review at https://www.regulations.gov. All documents in the docket are
listed in the https://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 https://www.regulations.gov/docket?D=EERE-2019-BT-WAV-0028. 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 https://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: [email protected].
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:
[email protected]@hq.doe.gov.
SUPPLEMENTARY INFORMATION: DOE is publishing CellarPro's petition for
waiver in its entirety in appendix 1 to this document, pursuant to 10
CFR 431.401(b)(1)(iv).\1\ DOE invites all interested parties to submit
in writing by March 31, 2021, comments and
[[Page 11973]]
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: Keith
Sedwick, [email protected], 1445 N McDowell Blvd.,
Petaluma, CA 94954.
---------------------------------------------------------------------------
\1\ The petition did not identify any of the information
contained therein as confidential business information.
---------------------------------------------------------------------------
Submitting comments via https://www.regulations.gov. The https://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 https://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 https://www.regulations.gov cannot be claimed as CBI. Comments
received through the 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 https://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 https://www.regulations.gov provides after you have successfully uploaded your
comment.
Submitting comments via email, hand delivery/courier, or postal
mail. Comments and documents submitted via email, hand delivery/
courier, or postal mail also will be posted to https://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. If you submit via postal mail
or hand delivery/courier, please provide all items on a CD, if
feasible, in which case it is not necessary to submit printed copies.
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, postal mail, or hand delivery/courier two well-marked 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. Submit these documents via email or on a CD, if
feasible. 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 2019-009
Interim Waiver Order
I. Background and Authority
The Energy Policy and Conservation Act, as amended (``EPCA''),\2\
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 \3\ 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 the 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 subject of this Interim Waiver Order. (42 U.S.C.
6311(1)(G))
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\2\ All 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).
\3\ For editorial reasons, upon codification in the U.S. Code,
Part C was redesignated as Part A-1.
---------------------------------------------------------------------------
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), test
procedures (42 U.S.C. 6314), labeling provisions (42 U.S.C. 6315),
energy conservation standards (42 U.S.C. 6313), and the authority to
require information and reports from manufacturers (42 U.S.C. 6316).
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
[[Page 11974]]
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, 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. See 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 equipment type in a manner representative of its energy consumption
characteristics of the basic model. See 10 CFR 431.401(b)(1)(iii). DOE
may grant the waiver subject to conditions, including adherence to
alternate test procedures. See 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 regulations so as to eliminate any need for the continuation
of such waiver. See 10 CFR 431.401(1). 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. See 10 CFR 431.401(e)(2). 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. See 10 CFR
431.401(h)(1).
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.
See 10 CFR 431.401(h)(2).
II. CellarPro's Petition for Waiver and Application for Interim Waiver
DOE received a petition from CellarPro dated September 13, 2019
seeking an interim waiver from the test procedure for walk-in cooler
and walk-in freezer refrigeration systems set forth at Appendix C
(CellarPro, No. 1 at p. 1).\4\ The waiver process under 10 CFR 431.401
requires that a petitioner must request a waiver for there to be
consideration of a petition for an interim waiver. CellarPro later
confirmed in a May 22, 2020 email that its petition should also be
considered as a petition for waiver (CellarPro, No. 4).
---------------------------------------------------------------------------
\4\ A notation in the form ``CellarPro, No. 1'' identifies a
written submission: (1) Made by CellarPro; and (2) recorded in
document number 1 that is filed in the docket of this petition for
waiver (Docket No. EERE-2019-BT-WAV-0028) and available at https://www.regulations.gov.
---------------------------------------------------------------------------
The primary assertion in the petition, absent an interim waiver, is
that 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
CellarPro's petition, the specified basic models of walk-in cooler
refrigeration systems operate at a temperature range of 45-65 [deg]F;
higher than that of a typical walk-in cooler refrigeration system.
Thus, the 35 [deg]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.
CellarPro also states that the specified basic models are ``wine cellar
cooling systems'' that operate at temperature and relative humidity
ranges optimized for the long-term storage of wine and are usually
located in air-conditioned spaces. CellarPro contends that because of
these characteristics, wine cellar walk-in refrigeration systems differ
in their walk-in box temperature setpoint, walk-in box relative
humidity, low/high load split,\5\ and compressor efficiency from other
walk-in cooler refrigeration systems.
---------------------------------------------------------------------------
\5\ The 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.
---------------------------------------------------------------------------
CellarPro states that the specified basic models are designed to
provide a cold environment at a temperature range between 45-65 [deg]F
with 50-70 percent relative humidity (``RH''), and typically are kept
at 55 [deg]F rather than the 35 [deg]F and <50 percent RH test
condition prescribed by the DOE test procedure. CellarPro states that
the refrigeration systems are designed solely for the purpose of long-
term cooling and storage of wine. CellarPro also asserts that operating
a wine cellar at the 35 [deg]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.
Additionally, a number of the basic models of walk-in refrigeration
systems identified in CellarPro's waiver petition are ``self-
contained'' or single-package systems. In its request for waiver,
CellarPro states that these systems have a small footprint and that
testing these systems using the refrigerant enthalpy method in AHRI
1250-2009 is complex since mass flow meters would need to be installed
in parts of the system with minimal space. DOE recognizes that because
of their single-package design, these basic models have insufficient
space within the units and insufficient lengths of liquid line and
evaporator outlet line for the dual mass flow meters and the dual
temperature and pressure measurements required by the test procedure's
refrigerant enthalpy method. As noted by CellarPro, AHRI 1250-2009 does
not include specific provisions for testing single-package systems and
testing these basic models using the refrigerant enthalpy method as
required by Appendix C would require extensive additional piping to
route the pipes out of the system where the components can be
installed, and then to route them back in to enable the
[[Page 11975]]
system to operate during testing.\6\ This additional piping would
impact unit performance, likely be inconsistent between test labs, and
result in unrepresentative test values for the unit under test. AHRI
has published a revised version of the test standard that provides
provisions for single-package systems without requiring extensive
additional piping (AHRI 1250-2020, 2020 Standard for Performance Rating
of Walk-in Coolers and Freezers). As discussed below, the interim
waiver alternative test procedure presented for comment in this
notification adopts the new test methods included in AHRI 1250-2020 for
single-package units.
---------------------------------------------------------------------------
\6\ In a waiver granted to Store It Cold for certain models of
single-package units, DOE acknowledged a similar issue in which the
additional piping necessary to install the required testing
components would affect performance of the units, rendering the
results unrepresentative. See 84 FR 39286 (Aug. 9, 2019). In the
case of the waiver granted to Store It Cold, the refrigerant
enthalpy method yielded inaccurate data for the specified basic
models compared to the basic models' true performance
characteristics because of the additional piping required to attach
the testing components required by the refrigerant enthalpy test.
The same issues are present for the specified single package system
basic models included in CellarPro's waiver petition.
---------------------------------------------------------------------------
DOE has received multiple waiver and interim waiver requests from
wine cellar manufacturers regarding the limitations of Appendix C. In
light of these requests, DOE met with the AHRI and wine cellar walk-in
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'').\7\ This letter documents industry support for
specific wine cellar walk-in refrigeration system test procedure
requirements, allowing the provisions to apply only to refrigeration
systems with a minimum operating temperature of 45 [deg]F, since wine
cellar system controls and unit design specifications prevent these
walk-ins from reaching a temperature below 45 [deg]F. A provision for
testing walk-in wine cellar refrigeration systems at an external static
pressure (``ESP'') \8\ of 50 percent of the maximum ESP to be specified
by manufacturers for each basic model (AHRI August 2020 Letter) is also
included.
---------------------------------------------------------------------------
\7\ DOE's meetings with CellarPro and other wine cellar
refrigeration systems 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-2019-BT-WAV-0028-0005.
\8\ External static pressure is the sum of all the pressure
resisting the fans. Here, this is chiefly the resistance generated
by the air moving through ductwork.
---------------------------------------------------------------------------
Accordingly, CellarPro submitted an updated petition for waiver and
interim waiver on October 2, 2020 (CellarPro, No. 6). The updated
petition states that all basic models listed in the petition for waiver
and interim waiver have a minimum operating temperature of 45 [deg]F
and provides maximum ESP values for specified ducted self-contained and
ducted split system basic models.
CellarPro 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. See 10 CFR
431.401(e)(2).
III. Requested Alternate Test Procedure
EPCA requires that manufacturers use the applicable 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 products and equipment, including when demonstrating
compliance with applicable DOE energy conservation standards. Pursuant
to its regulations at 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.
CellarPro seeks to use an approach that would test and rate
specific wine cellar walk-in refrigeration system basic models. The
company's suggested approach specifies using an air-return temperature
of 55 [deg]F, as opposed to the 35 [deg]F requirement prescribed in the
current DOE test procedure. CellarPro does not specify air return
relative humidity in their petition, though they do state that the
subject basic models are designed to maintain relative humidity between
50 and 70 percent. Additionally, CellarPro requests that a correction
factor of 0.55 be applied to the final AWEF calculation to account for
the different use and load patterns of the specified basic models as
compared to walk-in cooler refrigeration systems generally. CellarPro
cited the use of such a correction factor for coolers \9\ and
combination cooler refrigeration products under DOE's test procedure
for miscellaneous refrigeration products at 10 CFR part 430, subpart B,
appendix A.
---------------------------------------------------------------------------
\9\ A cooler is a cabinet, used with one or more doors, that has
a source of refrigeration capable of operating on single-phase,
alternating current and is capable of maintaining compartment
temperatures either: (1) No lower than 39 [deg]F (3.9 [deg]C); or
(2) In a range that extends no lower than 37 [deg]F (2.8 [deg]C) but
at least as high as 60 [deg]F (15.6 [deg]C). 10 CFR 430.2.
---------------------------------------------------------------------------
IV. Interim Waiver Order
DOE has reviewed CellarPro's application, its suggested testing
approach, representations of the specified basic models on the website
for the CellarPro brand, related product catalogs, and information
provided by CellarPro and other wine cellar walk-in refrigeration
system manufacturers in meetings with DOE. Based on this review, DOE is
granting an interim waiver that requires testing with a modified
version of the testing approach suggested by CellarPro.
The modified testing approach would apply to the models specified
in CellarPro's waiver petition that include two categories of WICF
refrigeration systems, i.e., single package and split (matched)
systems. The first 17 basic models listed in CellarPro's table (1800QTL
through 8200VS) are single-package systems. All of the single package
basic models can be installed either through the wall of a wine cellar
or on top of a wine cellar, and the VS series basic models can
additionally be ducted to the wine cellar. The ducted configuration is
designed to be installed remotely from the wine cellar and provide
cooling by circulating air through ducts from the wine cellar to the
unit and back. The remaining basic models (3000S through AH24Sx) are
split (matched) systems, in which refrigerant circulates between the
``evaporator unit'' (unit cooler) portion of the unit and the
``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 coil of the ducted split (matched) system circulates air
through ducts from the wine cellar to the evaporator coil and back to
provide cooling, while the evaporator coil of the ductless split
(matched) systems is installed either partially or entirely in the wine
cellar, allowing direct cooling. The capacity range of the specified
basic models is from 1,065 Btu/h to 17,500 Btu/h for the specified
operating conditions for each of the models (CellarPro, No.8).\10\
---------------------------------------------------------------------------
\10\ The specified operating temperatures are 55 [deg]F cold-
side air entering and 85 [deg]F warm-side air entering. Capacities
at specified operating conditions are included in the ``2020
CellarPro Product Performance List'' provided in docket No. EERE-
2019-BT-WAV-0028.
---------------------------------------------------------------------------
[[Page 11976]]
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 CellarPro for the specified basic models
listed in the petition is based upon CellarPro's representation that
the operating range for the basic models listed in the interim waiver
does not extend below 45 [deg]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 [deg]F and a
relative humidity of 55 percent. The alternate test procedure also
specifies that the capacity measurement for the specified basic models
that are single-package systems (17 basic models 1800QTL through
8200VS) be conducted using a primary and a secondary capacity
measurement method as specified in AHRI 1250-2020, using two of the
following: The indoor air enthalpy method; the outdoor air enthalpy
method; the compressor calibration method; the indoor room calorimeter
method; the outdoor room calorimeter method; or the balanced ambient
room calorimeter method.
The required alternate test procedure also includes the following
additional modifications to CellarPro's suggested approach: For systems
that can be installed with (1) ducted evaporator air, (2) with or
without ducted evaporator air, (3) ducted condenser air, or (4) with or
without ducted condenser 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.\11\ 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 what ESP would be imposed on the unit in field
operation.\12\ 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 \13\ using duct lengths
and diameters published in CellarPro's installation manuals (CellarPro,
No. 11). DOE's calculations show reasonable agreement with the maximum
ESP values provided by CellarPro 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 CellarPro to
be sufficiently representative.
---------------------------------------------------------------------------
\11\ Inches of water column (``in. wc'') is a unit of pressure
conventionally used for measurement of pressure differentials.
\12\ The 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.
\13\ Calculations 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
https://www.osti.gov/servlets/purl/836654 (Docket No. EERE-2019-BT-
WAV-0028-0013) and available at https://www.regulations.gov.
---------------------------------------------------------------------------
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
basic models with condensing or evaporator units that are not designed
for the ducting of air, this design characteristic must be clearly
stated.
Additionally, if there are multiple condenser or evaporator unit
fan speed settings, the speed setting used would be as instructed in
the unit's installation instructions. 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
either by symmetrically restricting the outlet duct \14\ or, if using
the indoor air enthalpy method, by adjusting the airflow measurement
apparatus blower.
---------------------------------------------------------------------------
\14\ This 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.
---------------------------------------------------------------------------
The alternate test procedure also describes the requirements for
measurement of ESP consistent with provisions provided in AHRI 1250-
2020 when using the indoor air enthalpy method with unit coolers.
Additionally, the alternate test procedure indicates that specified
basic models that are split systems must be tested as matched pairs.
According to CellarPro's petition, the walk-in refrigeration system
basic models that are split-systems are sold as full systems (i.e.,
matched pairs) rather than as individual unit cooler and condensing
unit components. This Interim Waiver Order provides no direction
regarding refrigerant line connection operating conditions, and as such
is inapplicable to testing the basic models as individual components.
Consequently, the Interim Waiver Order addresses only matched-pair
testing of the specified basic models that are split-systems.
DOE notes that, despite the request from CellarPro, it is not
including a 0.55 correction factor in the alternate test procedure
required by the Interim Waiver Order. The company claimed that such a
factor would correct for differences in wine cellar refrigeration
system fan power, compressor efficiency, and run time and load
conditions. CellarPro also observed that the test procedure in appendix
A to subpart B of 10 CFR part 430 (``Appendix A''), includes such a
factor to account for the difference in use and loading patterns of
coolers (e.g., self-contained wine chiller cabinets) as compared to
other residential refrigeration products and sought to include a factor
as part of its petition. Coolers, like other residential refrigeration
products, are tested in a 90 [deg]F room without door openings (section
2.1.1 of Appendix A). The intent of the energy test procedure for
residential refrigeration products is to simulate operation in typical
room conditions (72 [deg]F) with door openings by testing at 90 [deg]F
ambient temperature without door openings. 10 CFR 430.23(ff)(7). In
section 5.2.1.1 of Appendix A, a correction factor of 0.55 is applied
to the measured energy consumption of coolers so that measuring energy
consumption at 90 [deg]F ambient temperature without door openings
provides test results that are representative of consumer usage at 72
[deg]F ambient temperature with door openings. Specifically, the 0.55
correction factor reflects that (1) closed-door operation of self-
contained coolers in typical 72 [deg]F room conditions results in an
average energy consumption 0.46 times the value measured at the 90
[deg]F ambient temperature specified by the test procedure; and (2)
expected door openings of a self-contained wine chiller would add an
additional 20% thermal load. Multiplying 0.46 by 1.2 results in the
overall correction factor of 0.55. See 81 FR 46768, 46782 (July 18,
2016) (final rule for miscellaneous refrigeration products).
[[Page 11977]]
In contrast, these same closed-door conditions on which the
miscellaneous refrigeration correction factor is based are not present
in the test procedure for walk-in cooler refrigeration systems. The
WICF test procedure does not provide for closed-door testing at
elevated ambient temperatures as the test procedure for residential
refrigeration products does because walk-ins are tested and rated by
component, with a walk-in refrigeration system tested and rated
separately from a walk-in enclosure (panels and doors). See 76 FR
21580. Walk-in refrigeration load is set by using a representative
ratio of box load to capacity (see discussion below). As a result,
applying the 0.55 correction factor as suggested by CellarPro is not
appropriate for the specified basic models.
Further, CellarPro asserted that the suggested 0.55 correction
factor was to address the differences in run time and compressor
inefficiency of the specified basic models as compared to walk-in
cooler refrigeration systems more generally. It suggested that the run
time for wine cellar walk-in refrigeration systems ranges from 50 to 75
percent. 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 in the range suggested by CellarPro
as being representative for the specified basic models. As previously
discussed, walk-in energy consumption is determined by component, with
separate test procedures for walk-in 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 refrigeration systems. Accordingly, DOE
has declined to adopt a correction factor for the equipment at issue.
Based on DOE's review of CellarPro's petition, the required
alternate test procedure laid out 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 CellarPro's implementation of wine cellar walk-in refrigeration
system testing for these basic models. Consequently, DOE has determined
that CellarPro's petition for waiver will likely be granted.
Furthermore, DOE has determined that it is desirable for public policy
reasons to grant CellarPro immediate relief pending a determination of
the petition for waiver.
For the reasons stated, it is ordered that:
(1) CellarPro must test and rate the following CellarPro-branded
wine cellar walk-in refrigeration system basic models \15\ with the
alternate test procedure set forth in paragraph (2).
---------------------------------------------------------------------------
\15\ Basic model 2000VS was initially included twice in
CellarPro's petition, prior to a clarifying email on October 26,
2020 from CellarPro stating that this repeated model was intended to
be basic model 2000VS 220V (CellarPro, No. 7).
CellarPro Basic Models
----------------------------------------------------------------------------------------------------------------
Maximum Maximum
Minimum Maximum evaporator fan condenser fan
Catalog models operating operating external external
Basic model under basic temperature temperature static static
model group ([deg]F) ([deg]F) pressure pressure
(inwg) (inwg)
----------------------------------------------------------------------------------------------------------------
1800QTL....................... 1800QTL, 1800QTL- 45 65 0.00 0.00
L.
1800QT........................ Same............ 45 65 0.00 0.00
1800XT........................ Same............ 45 65 0.00 0.00
1800XTS....................... 1800XTS, 1800XTS- 45 65 0.00 0.00
B.
1800XTSx...................... Same............ 45 65 0.00 0.00
1800XT 220V................... Same............ 45 65 0.00 0.00
1800XTS 220V.................. Same............ 45 65 0.00 0.00
1800XTx 220V.................. Same............ 45 65 0.00 0.00
1800H......................... Same............ 51 65 0.09 0.09
1800H 220V.................... Same............ 51 65 0.09 0.09
2000VS........................ 2000VSi, 2000VSx 45 65 0.19 0.19
2000VS 220V................... 2000VSi 220V, 45 65 0.19 0.19
2000VSx 220V.
3200VS........................ 3200VSi, 3200VSx 45 65 0.25 0.25
4200VS........................ 4200VSi, 45 65 0.25 0.25
4200VSx,
4200VSi-B,
4200VSi-L.
4200VS 220V................... 4200VSi 220V, 45 65 0.25 0.25
4200VSx 220V.
6200VS........................ 6200VSi, 6200VSx 45 65 0.25 0.25
8200VS........................ 8200VSi, 8200VSx 45 65 0.25 0.25
3000S......................... 3000S, 3000Sqc.. 45 65 0.25 0.00
3000Scm....................... Same............ 47 65 0.00 0.00
3000Scmr...................... Same............ 45 65 0.25 0.00
3000Sh........................ 3000Sh, 3000Shqc 45 65 0.25 0.00
4000S......................... 4000S, 4000Sqc.. 45 65 0.25 0.00
4000S 220V.................... Same............ 45 65 0.25 0.00
4000Scm....................... Same............ 47 65 0.00 0.00
4000Scmr...................... Same............ 45 65 0.25 0.00
4000Sh........................ 4000Sh, 4000Shqc 45 65 0.25 0.00
[[Page 11978]]
4000Shwc...................... Same............ 45 65 0.25 0.00
4000Swc....................... Same............ 45 65 0.25 0.00
6000S......................... Same............ 45 65 0.25 0.00
----------------------------------------------------------------------------------------------------------------
(2) The alternate test procedure for the CellarPro 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 to
Subpart R, 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 Sec.
431.303)) to read:
3.1.1. In Table 1, Instrumentation Accuracy, refrigerant
temperature measurements shall have an accuracy of 0.5
[deg]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 [deg]F; all other
temperature measurements shall be accurate to within 1.0
[deg]F.
In Appendix C to Subpart R, revise section 3.1.4 (which specifies
modifications to AHRI 1250-2009) and add modifications of AHRI 1250-
2009 Tables 3 and 4 to read:
3.1.4. In Tables 3 and 4 of AHRI 1250-2009, Section 5, the
Condenser Air Entering Wet-Bulb Temperature requirement applies only to
single-packaged dedicated systems. Tables 3 and 4 shall be modified to
read:
Table 3--Fixed Capacity Matched Refrigerator System and Single-Packaged Dedicated System, Condensing Unit Located Indoor
--------------------------------------------------------------------------------------------------------------------------------------------------------
Unit cooler
Unit cooler air entering Condenser air Maximum
Test description air entering relative entering dry- condenser air Compressor status Test objective
dry-bulb, humidity, % bulb, [deg]F entering wet-
[deg]F \1\ bulb, [deg]F
--------------------------------------------------------------------------------------------------------------------------------------------------------
Evaporator Fan Power............. 55 55 .............. .............. ............................... Measure fan input
wattage.\2\
Refrigeration Capacity........... 55 55 90 \3\ 65 Compressor On.................. Determine Net
Refrigeration
Capacity of Unit
Cooler, input
power, and EER at
Rating Condition.
--------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
\1\ The test condition tolerance (maximum permissible variation of the average value of the measurement from the specified test condition) for relative
humidity is 3%.
\2\ Measure fan input wattage either by measuring total system power when the compressor and condenser are turned off or by separately submetering the
evaporator fan.
\3\ Maximum allowable value for Single-Packaged Systems that do not use evaporative Dedicated Condensing Units, where all or part of the equipment is
located in the outdoor room.
Table 4--Fixed Capacity Matched Refrigerator System and Single-Packaged Dedicated System, Condensing Unit Located Outdoor
--------------------------------------------------------------------------------------------------------------------------------------------------------
Unit cooler
Unit cooler air entering Condenser air Maximum
Test description air entering relative entering dry- condenser air Compressor status Test objective
dry-bulb, humidity, % bulb, [deg]F entering wet-
[deg]F \1\ bulb, [deg]F
--------------------------------------------------------------------------------------------------------------------------------------------------------
Evaporator Fan Power............. 55 55 .............. .............. ............................... Measure fan input
wattage.\2\
Refrigeration Capacity A......... 55 55 95 \3\ 68 Compressor On.................. Determine Net
Refrigeration
Capacity of Unit
Cooler, input
power, and EER at
Rating Condition.
Refrigeration Capacity B......... 55 55 59 \3\ 46 Compressor On.................. Determine Net
Refrigeration
Capacity of Unit
Cooler and system
input power at
moderate condition.
[[Page 11979]]
Refrigeration Capacity C......... 55 55 35 \3\ 29 Compressor On.................. Determine Net
Refrigeration
Capacity of Unit
Cooler and system
input power at cold
condition.
--------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
\1\ The test condition tolerance (maximum permissible variation of the average value of the measurement from the specified test condition) for relative
humidity is 3%.
\2\ Measure fan input wattage either by measuring total system power when the compressor and condenser are turned off or by separately submetering the
evaporator fan.
\3\ Maximum allowable value for Single-Packaged Dedicated Systems that do not use evaporative Dedicated Condensing Units, where all or part of the
equipment is located in the outdoor room.
In Appendix C to Subpart R, following section 3.2.5 (instructions
regarding modifications to AHRI 1250-2009), add sections 3.2.6 and
3.2.7 to read:
3.2.6 The purpose in section C1 of appendix C is modified by
extending it to include Single-Packaged Dedicated Systems.
3.2.7 For general test conditions and data recording (appendix C,
section C7), the test acceptance criteria in Table 2 and the data to be
recorded in Table C2 apply to the Dual Instrumentation and Calibrated
Box methods of test.
In Appendix C to Subpart R, revise section 3.3 to read:
3.3. Matched systems, single-packaged dedicated systems, and unit
coolers tested alone: Test any split system wine cellar walk-in
refrigeration system as a matched pair. Any condensing unit or unit
cooler component must be matched with a corresponding counterpart for
testing. Use the test method in AHRI 1250-2009 (incorporated by
reference; see Sec. 431.303), appendix C as the method of test for
matched refrigeration systems, single-packaged dedicated systems, or
unit coolers tested alone, with the following modifications:
* * * * *
In Appendix C to Subpart R, revise sections 3.3.3 through 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 compressors and condenser
fan of the walk-in system is 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, [deg]F
Twb Wet-bulb temperature of air at inlet, [deg]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 x EFcomp,on
In Appendix C to Subpart R, following section 3.3.7.2, add new
sections 3.3.8, 3.3.9, and 3.3.10 to read:
3.3.8. Measure power and capacity of single-packaged dedicated
systems as described in sections C4.1.2 and C9 of AHRI 1250-2020. The
third and fourth sentences of Section C9.1.1.1 of AHRI 1250-2020
(``Entering air is to be sufficiently dry as to not produce frost on
the Unit Cooler coil. Therefore, only sensible capacity measured by dry
bulb change shall be used to calculate capacity.'') shall not apply.
3.3.9. For systems 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. If testing with the indoor air enthalpy method,
adjust the airflow measurement apparatus fan to set the external static
pressure--otherwise, set the external static pressure by symmetrically
restricting the outlet of the test duct. In case of conflict, these
requirements for setting evaporator airflow take precedence over
airflow values specified in manufacturer installation instructions or
product literature.
3.3.10. For systems with ducted condenser air, or that can be
installed with or without ducted condenser 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. If testing with the outdoor
[[Page 11980]]
enthalpy method, adjust the airflow measurement apparatus fan to set
the external static pressure--otherwise, set the external static
pressure by symmetrically restricting the outlet of the test duct. In
case of conflict, these requirements for setting condenser airflow take
precedence over airflow values specified in manufacturer installation
instructions or product literature. If testing using the outdoor air
enthalpy method, the requirements of section 8.6 of ASHRAE 37-2009 are
not applicable.
In Appendix C to Subpart R, revise section 3.3.6 (which specifies
modifications to AHRI 1250-2009) to read:
3.3.6. AWEF is calculated on the basis that walk-in box load is
equal to half of the system net capacity, without variation according
to high and low load periods and without variation with outdoor air
temperature for outdoor refrigeration systems, and the test must be
done as a matched or single-package refrigeration system, as follows:
For Indoor Condensing Units:
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(3) Representations. CellarPro may not make representations about
the efficiency of a basic model listed in paragraph (1) of this Interim
Waiver Order for compliance, marketing, or other purposes unless that
basic model has been tested in accordance with the provisions set forth
above and such representations fairly disclose the results of such
testing.
(4) This interim waiver 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 CellarPro are valid. If
CellarPro 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
CellarPro 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, CellarPro may request
that DOE rescind or modify the Interim Waiver Order if CellarPro
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).
[[Page 11981]]
(6) Issuance of this Interim Waiver Order does not release
CellarPro from the certification 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. CellarPro 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, CellarPro 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 petition consistent with 10
CFR 431.401(g).
Signing Authority
This document of the Department of Energy was signed on February
22, 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 Acting
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 February 23, 2021.
Treena V. Garrett,
Federal Register Liaison Officer, U.S. Department of Energy.
BILLING CODE 6450-01-P
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[FR Doc. 2021-04062 Filed 2-26-21; 8:45 am]
BILLING CODE 6450-01-C
