Voglio sapere a riguardo di…

khammond on DSKJM1Z7X2PROD with PROPOSALS3

36054

Federal Register / Vol. 86, No. 127 / Wednesday, July 7, 2021 / Proposed Rules
in scope if it has an MRC less than 324
lbs. per hour.
Issue4: DOE requests comment on its proposal to clarify what terms are synonymous with DDXDOAS.
Issue5: DOE requests comment and data on the development of a crosswalk from the efficiency levels in ASHRAE
Standard 90.1 based on ANSI/AHRI
9202015 to efficiency levels based on AHRI 9202020. DOE is specifically seeking data on how dehumidification and heating efficiency ratings for a given DDXDOAS model are impacted when measured using AHRI 9202020 as compared to ANSI/AHRI 9202015.
Issue6: DOE requests comment on the terminology DOE proposes to use for DDXDOASes, including integrated seasonal coefficient of performance 2, or ISCOP2; integrated seasonal moisture removal efficiency 2, or ISMRE2; and ventilation energy recovery system, or VERS.
Issue7: DOE requests comment on the proposal to require that watercooled and water-source DDXDOASes with integral pumps be set up with an external pressure rise equal to 20 feet of water column with a condition tolerance of 0/+1 foot and an operating tolerance of 1 foot.
Issue8: DOE requests comment on the proposed general control setting requirement for DDXDOASes.
Issue9: DOE is requesting comment on the proposed definition of nonstandard low-static fan motor and whether the proposed definition reflects stakeholder understanding of the term.
Issue10: DOE seeks comment on the proposed definition of basic model of a DDXDOAS.
Issue11: DOE requests comment on the sampling plan proposed for DDX
DOASes. DOE specifically requests information and data regarding the proposed confidence level and whether variability of testing of DDXDOASes would require a less stringent level, and if so, what that level should be.
Issue12: DOE requests comment on its proposal regarding representations for models approved for use with multiple refrigerants.
Issue13: DOE requests comment on its proposals for AEDM requirements for DDXDOAS equipment. DOE requests comment specifically on whether the proposed 10-percent tolerance for comparison of test results with rated values is appropriate. If the 10-percent tolerance is not appropriate, DOE
requests comment on why it is not appropriate, as well as comment indicating an appropriate tolerance.
Issue14: DOE requests comment on its proposal to adopt the rounding requirements for key metrics as
VerDate Sep<11>2014

18:50 Jul 06, 2021

Jkt 253001

specified in sections 6.1.2.1 through 6.1.2.8 of AHRI 9202020.
Issue15: DOE requests comment on its understanding of the impact of the test procedure proposals in this NOPR, specifically DOEs initial conclusion that manufacturers would not incur any additional costs due to this proposal, if finalized, compared to current industry practice, as indicated by AHRI 920
2020.
Issue16: DOE seeks comment on the degree to which the DOE test procedure should consider and be harmonized further with the most recent relevant industry consensus testing standards for DDXDOASes and whether there could be modifications to the industry test method that would provide additional benefits to the public. DOE also requests comment on the benefits and burdens of adopting any industry/voluntary consensus-based or other appropriate test procedure, without modification.
Issue17: DOE invites comment on the number of domestic small businesses producing DDXDOASes for the U.S. market.
Issue18: DOE invites comment on the testing costs and timing of testing costs described in this IRFA.
VI. Approval of the Office of the Secretary The Secretary of Energy has approved publication of this proposed rule.
List of Subjects 10 CFR Part 429
Administrative practice and procedure, Confidential business information, Energy conservation, Household appliances, Imports, Incorporation by reference, Intergovernmental relations, Reporting and recordkeeping requirements, Small businesses.
10 CFR Part 431
Administrative practice and procedure, Confidential business information, Energy conservation, Incorporation by reference, Reporting and recordkeeping requirements.
Signing Authority This document of the Department of Energy was signed on June 23, 2021, by Kelly Speakes-Backman, Principal Deputy Assistant Secretary and Acting Assistant Secretary for Energy Efficiency and Renewable Energy, pursuant to delegated authority from the Secretary of Energy. That document with the original signature and date is maintained by DOE. For administrative purposes only, and in compliance with requirements of the Office of the Federal Register, the undersigned DOE Federal
PO 00000

Frm 00038

Fmt 4701

Sfmt 4702

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 June 23, 2021.
Treena V. Garrett, Federal Register Liaison Officer, U.S.
Department of Energy.

For the reasons stated in the preamble, DOE is proposing to amend parts 429 and 431 of chapter II of title 10, Code of Federal Regulations as set forth below:
PART 429CERTIFICATION, COMPLIANCE, AND ENFORCEMENT
FOR CONSUMER PRODUCTS AND
COMMERCIAL AND INDUSTRIAL
EQUIPMENT
1. The authority citation for part 429
continues to read as follows:

Authority: 42 U.S.C. 62916317; 28 U.S.C.
2461 note.

2. Amend 429.43 by adding paragraph a3 to read as follows:

429.43 Commercial heating, ventilating, air conditioning HVAC equipment.

a
3 Refrigerants: For dehumidifying direct expansion-dedicated outdoor air systems DDXDOASes, if a basic model is distributed in commerce for which the manufacturer specifies the use of more than one refrigerant option, the ISMRE2 and ISCOP2, as applicable, are determined for that basic model using the refrigerant that results in the lowest ISMRE2 and the refrigerant that results in the lowest ISCOP2, as applicable. For example, the dehumidification performance metric ISMRE2 must be based on the refrigerant yielding the lowest ISMRE2, and the heating performance metric ISCOP2 if the unit is a heat pump DDXDOAS must be based on the refrigerant yielding the lowest ISCOP2.
A refrigerant is considered approved for use if it is listed on the nameplate of the single package unit or outdoor unit.
Pursuant to the definition of basic model in 431.92 of this chapter, specification of an additional refrigerant option that requires use of different hardware i.e., compressors, heat exchangers, or air moving systems that are not the same or comparably performing, results in a different basic model.

E:FRFM07JYP3.SGM

07JYP3