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Federal Register / Vol. 86, No. 232 / Tuesday, December 7, 2021 / Proposed Rules 5 DOE seeks comment on including within the test procedure scope HSBD ceiling fans, the proposed term and definition, and the appropriate tip speed threshold.
Furthermore, DOE requests data on blade thickness and tip speeds for these HSBD
ceiling fans.
6 DOE seeks comment on the alternate definition for HSBD ceiling fans, and whether it would incorporate all the LDBD
ceiling fans from DOEs primary proposal.
Further, DOE requests comment on whether the HSBD and LDBD ceiling fan scope should be combined, i.e., what is the utility and application of the two fan categories.
7 DOE requests comment on requiring AMCA 23015 as the test procedure for HSBD and LDBD ceiling fans, or whether DOE should consider any other test procedure.
8 DOE requests comment on its proposal to test single speed HSBD and LDBD only at high speed and variable speed HSBD and LDBD at high speed and 40 percent speed.
Alternatively, DOE requests comment the typical number of operating speeds and hours for HSBD ceiling fans and LDBD
ceiling fans.
9 DOE requests comment on whether the efficiency of HDBD fans and LDBD ceiling fans is more appropriately evaluated using the CFEI or CFM/W metric.
10 DOE seeks comment on its preliminary determination that establishing an integrated metric that incorporates the energy efficiency measured as required under each LCDF
standard and the energy use measured during standby mode would be technically infeasible.
11 DOE seeks comment on its proposal to specify for LDCFs a separate standby mode energy use metric, which would be based on the standby power procedure defined in section 3.6 of appendix U.
12 DOE seeks comment on its proposal to specify for HSBD ceiling fans and LDBD
ceiling fans a separate standby mode energy use metric, which would be based on the standby power procedure defined in section 3.6 of appendix U.
13 DOE seeks comment on the proposal to update the low speed definition as follows:
Low speed means the lowest available ceiling fan speed for which fewer than half or three, whichever is fewer, sensors per individual axis are measuring less than 40 feet per minute.
14 DOE also seeks comment on the alternate proposal to represent low speed as a table specifying the number of sensors per individual axis required to measure greater than 40 feet per minute.
15 DOE seeks comment on the proposal to require testing to start at the lowest speed and move to the next highest speed until the modified low speed criteria are met.
Specifically, DOE seeks comment on whether any applicable variable speed LSSD ceiling fans without distinct speed settings would require further specificity on this proposal and if so, how it should be specified.
16 DOE requests comment on the extent to which, for DOE certification purposes, an individual unit within a sample of fans per basic model could have a different setting that meets the proposed definition of low
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speed than other units within the same sample. If so, DOE requests data on how the issue could affect representativeness in terms of ceiling fan efficiency of the basic model.
17 DOE seeks comment on the proposed requirement to add 30 seconds between test runs for a rotating arm setup either singlearm or two-arm.
18 DOE seeks comment on its proposal to permit the use of a two-arm setup, as well as any data to confirm that a 2-arm option produces comparable results to the existing 1-arm and 4-arm options.
19 DOE requests comment on its proposal to specify aligning the air velocity sensors perpendicular to the airflow. DOE also requests comment on whether it should revise Figure 2 of appendix U, and/or provide an additional figure, to depict more clearly the alignment of the velocity sensors perpendicular to the direction of airflow.
20 DOE seeks comment on its proposal to measure ceiling fan blade thickness at the thickest point within 1 of the blades leading edge, along the plane perpendicular to the blades radial length at which the blade is thinnest. Specifically, DOE seeks feedback on if this update will prevent ceiling fans from being incorrectly classified into the wrong product class. DOE also welcomes feedback on if the blade thickness should be measured within 1 of the leading edge, or if the allowable thickness measurement zone should be restricted to closer to the leading edge e.g., within 12 or 14 of the leading edge.
21 DOE seeks comment on its proposal to require that testing be performed without any additional accessories or features energized, if possible; and if not, with the additional accessories or features set at the lowest energy-consuming mode for testing.
22 DOE seeks comment on its proposal to specify that any represented value of airflow CFM at high speed, including the value used to determine whether a ceiling fan is a highly-decorative ceiling fan, is determined pursuant to 10 CFR 429.32a2i and rounded to the nearest CFM.
23 DOE requests comment on the proposed instrument measurement resolution, rounding and tolerance requirements for blade edge thickness measurements.
24 DOE seeks comment on its proposal to define a tolerance of 2% for blade RPM
measurements at high speed. If other tolerances are recommended, DOE seeks specific equipment and/or voltage variation data to justify the recommended tolerance.
25 DOE requests comment on the number of ceiling fan models on the market that are larger than 24 feet, and the associated burden of testing any ceiling fans larger than 24 feet to the proposed DOE test procedure in this SNOPR.
26 DOE requests comment on the per model test cost estimate to test these expanded scope belt-driven ceiling fans, and the current estimate of the number of manufacturers and number of models of expanded scope belt-driven ceiling fans currently made by ceiling fan manufacturers.
27 DOE requests comment on the specific costs and cost savings identified regarding
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the proposed amendments to the scope, stability criteria, and low speed definition.
Additionally, DOE requests comment on any other potential costs or costs savings not identified that ceiling fan manufacturers may incur as a result of the proposed test procedure amendments.
28 DOE requests comment on the number of potential small businesses DOE identified;
the number of ceiling fan models estimated to be manufactured by these potential small businesses; and the per-model testing costs DOE estimated small businesses may incur to test these identified ceiling fans.
Additionally, DOE also requests comment on any other potential costs small businesses may incur due to the proposed amended test procedures, if finalized.
29 DOE requests comment on the number of respondents and burden requirements for collecting information for LDCFs with a diameter greater than 24 feet.

VI. Approval of the Office of the Secretary The Secretary of Energy has approved publication of this supplemental notice of proposed rulemaking.
List of Subjects 10 CFR Part 429
Administrative practice and procedure, Confidential business information, Energy conservation, Household appliances, Reporting and recordkeeping requirements.
10 CFR Part 430
Administrative practice and procedure, Confidential business information, Energy conservation, Household appliances, Imports, Incorporation by reference, Intergovernmental relations, Small businesses.
Signing Authority This document of the Department of Energy was signed on November 16, 2021, by Kelly Speakes-Backman, Principal Deputy Assistant Secretary and Acting Assistant Secretary for Energy Efficiency and Renewable Energy, pursuant to delegated authority from the Secretary of Energy. That document with the original signature and date is maintained by DOE. For administrative purposes only, and in compliance with requirements of the Office of the Federal Register, the undersigned DOE Federal Register Liaison Officer has been authorized to sign and submit the document in electronic format for publication, as an official document of the Department of Energy. This administrative process in no way alters the legal effect of this document upon publication in the Federal Register.

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