[Federal Register Volume 88, Number 151 (Tuesday, August 8, 2023)]
[Rules and Regulations]
[Pages 53371-53377]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-15712]
-----------------------------------------------------------------------
DEPARTMENT OF ENERGY
10 CFR Parts 429 and 431
[EERE-2021-BT-TP-0021]
RIN 1904-AF17
Energy Conservation Program: Test Procedure for Fans and Blowers
AGENCY: Office of Energy Efficiency and Renewable Energy, Department of
Energy.
ACTION: Final rule; technical amendments.
-----------------------------------------------------------------------
SUMMARY: On May 1, 2023, the U.S. Department of Energy (``DOE'')
published a final rule adopting procedures for fans and blowers
(hereafter the ``May 2023 Final Rule''). This document corrects
editorial and typographical errors in the May 2023 Final Rule. Neither
the errors nor the corrections in this document affect the
[[Page 53372]]
substance of the rulemaking or any conclusions reached in support of
the final rule.
DATES: Effective August 8, 2023.
FOR FURTHER INFORMATION CONTACT:
Mr. Jeremy Dommu, U.S. Department of Energy, Office of Energy
Efficiency and Renewable Energy, Building Technologies Office, EE-5B,
1000 Independence Avenue SW, Washington, DC 20585-0121. Telephone:
(202) 586-9879. Email: [email protected].
Ms. Amelia Whiting, U.S. Department of Energy, Office of the
General Counsel, GC-33, 1000 Independence Avenue SW, Washington, DC
20585-0121. Telephone: (202) 586-2588. Email:
[email protected].
SUPPLEMENTARY INFORMATION:
I. Background
The May 2023 final rule established: (1) test procedures for fans
and blowers and incorporated the relevant industry test standards for
measuring the fan electrical power and determining the fan energy index
(``FEI'') of fans and blowers other than air-circulating fans; (2) test
procedure for air circulating fans measuring the fan airflow in cubic
feet per minute per watt of electric power input (``CFM/Watt''); (3)
supporting definitions; (4) requirements for alternative efficiency
determination methods; and (5) sampling requirements. 88 FR 27312 (May
1, 2023).
Since the publication of the May 2023 Final Rule, DOE identified
several typographical and editorial errors that could create confusion
when conducting the DOE test procedure.
In the May 2023 Final Rule, in Sec. 431.172, DOE introduced almost
all definitions using ``means the'' or ``means a'' to describe each
defined term. 88 FR 27312, 27389-27390. However, the definition of
``air circulating fan discharge area'' in Sec. 431.172 of the
regulatory text used a colon ``:'' rather than ``means the'' to
introduce the definition. DOE replaces the colon ``:'' by ``means the''
to add consistency with how other definitions are presented. DOE notes
that the meaning of the definition for ``air circulating fan discharge
area'' is unchanged with this correction.
In the May 2023 Final Rule, DOE incorporated by reference AMCA 214-
21, including the definitions of ``fan static pressure'' and ``fan
total pressure'' in sections 3.41 and 3.43 of AMCA 214-21. 88 FR 27312,
27392. However, in the definition of ``fan static air power'' in Sec.
431.172 of the regulatory text, the terms ``static pressure'' and
``total pressure'' are used without referencing the term ``fan''. DOE
is concerned that this may cause confusion as DOE incorporated the
definitions of ``fan static pressure'' and ``fan total pressure'',\1\
but did not define the terms ``static pressure'' and ``total
pressure''. In addition, the terms ``fan static pressure'' and ``fan
total pressure'' are used throughout the preamble of the May 2023 Final
Rule and elsewhere in the regulatory text. 88 FR 27312, 27319, 27344,
27353, 27371, 27389, 27390, 27392. Consistent with the definition of
``fan static pressure'' and ``fan total pressure'' in sections 3.41 and
3.43 of AMCA 214-21, as incorporated by reference, and consistent with
the terminology used throughout the preamble of the May 2023 Final Rule
and elsewhere in the regulatory text, DOE replaces ``using static
pressure instead of total pressure'' with ``using fan static pressure
instead of fan total pressure'' in the definition of ``fan static air
power'' in Sec. 431.172. The meaning of the definition is unchanged by
this correction.
---------------------------------------------------------------------------
\1\ As noted previously, DOE incorporated by reference AMCA 214-
21, including the definitions of ``fan static pressure'' and ``fan
total pressure'' in sections 3.41 and 3.43 of AMCA 214-21. 88 FR
27312, 27392.
---------------------------------------------------------------------------
DOE identified a missing hyphen in Sec. 431.173, where the text
reads as ``ANSI/AMCA Standard 21016 (``AMCA 210-16''), rather than
ANSI/AMCA Standard 210-16 (``AMCA 210-16''). 88 FR 27312, 27390. The
reference should match the description in the preamble, which includes
the hyphen. DOE corrects this to add the hyphen between 210 and 16.
Additionally, in the May 2023 Final Rule, the test procedure
established for fans and blowers other than air circulating fans
specifies that the applicable rating metric of FEI must be calculated
using the electrical input power required to operate a fan in kilowatts
(kW), abbreviated as ``FEP''. 88 FR 27312, 27365. The May 2023 Final
Rule generally uses the term ``fan electrical input power'' to
designate the FEP throughout the preamble. 88 FR 27312, 27312, 27319,
27363, 27365, 27371. The preamble of the May 2023 Final Rule also uses
the term ``fan electrical power'' to designate the FEP in one instance.
88 FR 27312, 27355. Further, in a number of places in the regulatory
text, the term ``fan electrical input power'' and ``fan electrical
power'' are used to describe the electrical input power to the fan in
kilowatts (kW), abbreviated as ``FEP''. 88 FR 27312, 27387, 27388,
27391, 27392, 27393. The May 2023 Final Rule also incorporates by
reference AMCA 241-21 as the industry standards used to determine and
define the FEP. In AMCA 214-21, the term ``fan electrical power'' is
used to designate the FEP and defined in section 3 ``Definitions'' of
AMCA 214-21, incorporated by reference. DOE believes that the use of
``fan electrical input power'' and ``fan electrical power'' to both
designate the FEP may create confusion because only ``fan electrical
power'' is the defined term. As such, DOE is correcting the regulatory
text to only use ``fan electrical power'', consistent with the
definition in section 3 of AMCA 214-22, incorporated by reference, and
replaces all instances of ``fan electrical input power'' with ``fan
electrical power''.
The preamble of the May 2023 Final Rule states that DOE is adopting
the validation classes (1) through (9) and lists them as follows: (1)
centrifugal housed; (2) radial housed; (3) centrifugal inline; (4)
centrifugal unhoused; (5) centrifugal PRV exhaust; (6) centrifugal
power roof ventilator (``PRV'') supply; (7) axial inline; (8) axial
panel; (9) axial PRV. 88 FR 27312, 27373. The categories of PRVs are
correctly listed in the preamble of the May 2023 Final Rule in footnote
20 where DOE specifies that PRVs include: Centrifugal PRV exhaust fans;
Centrifugal PRV supply fans; and Axial PRVs, as defined in AMCA 214-21.
88 FR 27312, 27318. However, in the regulatory text, in Sec.
429.70(n), DOE lists the following validation classes: centrifugal
housed fan; radial housed fan; centrifugal inline fan; centrifugal
unhoused fan; centrifugal power roof ventilator exhaust fan;
centrifugal power roof ventilator supply fan; axial inline fan; axial
panel fan; axial centrifugal power roof ventilator fan.'' 88 FR 27312,
27388. DOE included the term ``axial centrifugal power roof ventilator
fan'' as one of the validation classes instead of the correct term
``axial power roof ventilator''. Similarly, the same error is included
in Sec. 431.174(a)(1), where DOE also used the term ``axial
centrifugal power roof ventilator fan'' instead of ``axial power roof
ventilator'' when listing the categories of fans in scope. 88 FR 27312,
27391. Therefore, DOE corrects this error and replaces the term ``axial
centrifugal power roof ventilator fan'' by ``axial power roof
ventilator''.
In the May 2023 Final Rule, DOE established the metric for fans
other than air circulating fans as the FEI, which is the fan energy
index and represents the ratio of the electrical power of a reference
fan to the electrical input power of the actual fan for which the FEI
is calculated, both established at the same duty point. 88 FR 27312,
[[Page 53373]]
27349, 27365. However, in the regulatory text in Sec.
429.69(a)(1)(iii), DOE wrote ``any represented value of fan electrical
input power (``FEI''), or other measure of energy consumption of a
basic model for which consumers would favor higher values shall be less
than or equal to the tested value'' and incorrectly described the FEI
as the ``fan electrical input power'' \2\ rather than the ``fan energy
index''. 88 FR 27312, 27387. In Sec. 429.69(a)(1)(v), the FEI is
correctly described: ``any represented value of the fan energy index
(``FEI''), or other measure of energy consumption of a basic model for
which consumers would favor higher values''. 88 FR 27312, 27388. DOE
corrects this error and replaces ``fan electrical input power
(``FEI'')'' by ``fan energy index (``FEI'')'' in Sec.
429.69(a)(1)(iii).
---------------------------------------------------------------------------
\2\ As noted previously, the term ``fan electrical input power''
is equivalent to ``fan electrical power''.
---------------------------------------------------------------------------
In the test procedure NOPR published on July 25, 2022, DOE proposed
to incorporate by reference AMCA 214-21 for air circulating fans, which
relies on the FEP and FEI metrics (``wire-to-air metrics'') for air
circulating fans. 87 FR 44194, 44236-44237. In the May 2023 Final Rule,
DOE established the metric for air circulating fans in terms of
efficacy in cubic feet per minute per watt (``CFM/W'') for air
circulating fans at maximum speed. 88 FR 27312, 27371. This is also
reflected in the regulatory text in section 2.2.1 of appendix B to
subpart J of part 431 where DOE states that ``The air circulating fan
efficacy (E[fnof][fnof]circ) in cubic feet per minute (``CFM'') per
watt (``W'') (``CFM/W'') at maximum speed must be determined in
accordance with the applicable sections of AMCA 230-23 as listed in
section 2.2.2 of this appendix''. 88 FR 27312, 27393. However, in the
May 2023 Final Rule, in the regulatory text in Sec. 431.174, the text
was not updated to reflect the adopted metric and incorrectly
references the FEI and FEP metrics as proposed in the July 2022 NOPR,
as follows: ``Determine the FEI and the fan electrical input power
(``FEP'') or the weighted-average FEI and weighted-average FEP as
applicable, using the test procedure set forth in appendix B of this
subpart''. 88 FR 27312, 27391. DOE corrects this error such that the
text reflects the correct efficacy metric in CFM/W adopted for air
circulating fans in the May 2023 Final Rule, such that it reads:
``Determine the air circulating fan efficacy in cubic feet per minute
per watt at maximum speed using the test procedure set forth in
appendix B of this subpart.''
In the May 2023 Final Rule, DOE stated that, although it
incorporated by reference AMCA 214-21, it does not include section 6.5
of AMCA 214.21 in its test procedure. 88 FR 27312, 27350. Similarly, in
the regulatory text, when listing the applicable section of AMCA 214-21
in section 0 of appendix A to subpart J of part 431, DOE did not list
section 6.5 of AMCA 214-21. 88 FR 27312, 27392. DOE also did not list
section 6.5 of AMCA 214-21 as an applicable section in Table 1 appendix
A to subpart J of part 431. Id. However, in the regulatory text, in
section 2.2.1 of appendix A to subpart J of part 431, DOE mistakenly
listed section 6.5 in the following statement ``fan shaft power for
fans tested in accordance with sections 6.3, 6.4 or 6.5 of AMCA 214-
21''. 88 FR 27312, 27392. DOE corrects this error to be consistent with
the discussion of the preamble and other sections of the regulatory
text in the May 2023 Final Rule that excluded section 6.5 of AMCA 214-
21.
In the May 2023 Final Rule, DOE adopted provisions to replace the
motor efficiency values in Annex A of AMCA 214-21 with the values in
Table 5 of 10 CFR 431.25. DOE stated that while the values are
currently identical, referencing the CFR would ensure that the values
of polyphase regulated motor efficiencies remain up to date with any
potential future updates established by DOE. 88 FR 27312, 27349. In the
regulatory text in Sec. 429.69, to reflect this intent, DOE also
states: ``Manufacturers must update represented values to account for
any change in the applicable motor standards in Table 5 of part 431 of
this chapter''. In the regulatory text, DOE also included this
provision in section 2.1 of appendix A to subpart J of part 431 as
follows: ``Where AMCA 214-21 refers to Annex A, ``Polyphase Regulated
Motor Efficiencies (Normative),'' of AMCA 214-21, Table 5 of Sec.
431.25 must be used instead.'' However, because any potential future
updates to electric motor energy conservation updates could appear in
tables other than Table 5 of 10 CFR 431.25, DOE makes the following
correction to reflect the intent of the preamble which is to remain up
to date with any potential future updates established by DOE:
``Polyphase Regulated Motor Efficiencies (Normative),'' of AMCA 214-21,
Table 5 of Sec. 431.25 or the currently applicable standards in Sec.
431.25 must be used instead.''
In the May 2023 Final Rule, DOE established stability criteria for
testing both air circulating fans and fan and blowers other than air
circulating fans. As part of the stability requirements for fans and
blowers other than air circulating fans, DOE stated that it was
adopting provisions to require that the stability will be evaluated and
confirmed over at least three 60-second data collection intervals, and
that the fan input power shall be monitored at least every 5 seconds
over the 60-second data collection intervals. 88 FR 27312, 27360. In
addition, DOE specified that the average fan speed from one data
collection interval to the next must be within 1 percent or
1 rpm, whichever is greater; and the average input power by reaction
dynamometer, torque meter or calibrated motor must be within 4 percent, or the average input power by electrical meter must be
within 2 percent of the mean or 1 watt, whichever is
greater. Id. However, in the May 2023 Final Rule, DOE included
incorrect regulatory text for the stability requirement for input power
in section 2.4(b)(2) of appendix A to subpart J of part 431, specifying
that ``the average input power from the last 60-second interval varies
by less than the absolute value of 1 percent, whichever is greater,
compared to the average input power measured during the previous 60-
second test interval.'' 88 FR 27312, 27393. DOE is correcting this
error in section 2.4(b)(2) of appendix A to subpart J of part 431 to
remove this language and replace it with the appropriate stability
requirement that ``the average input power from the last 60-second
interval by reaction dynamometer, torque meter or calibrated motor must
be 4 percent, or the average input power by electrical
meter must be 2 percent of the mean or 1 watt, whichever is
greater, compared to the average input power measured during the
previous 60-second test interval.''
In addition, for the stability conditions for fans and blowers
other than air circulating fans in section 2.4(b) of appendix A to
subpart J of part 431, DOE identified that the units for recording
input power are listed as ``pound-force, pound-force-in, or watts.'' 88
FR 27312, 27393. but the units should be ``horsepower or watts.'' The
pound-force and pound-force-in were listed incorrectly and the
horsepower or watts are the correct units, consistent with AMCA 214-21,
incorporated by reference. Therefore, DOE is correcting this error and
replacing the units for input power in section 2.4(b) in appendix A to
subpart J of part 431with ``horsepower or watts.''
DOE identified that in the description of the stability conditions
for air circulating fans in section 2.5(b)(3) of appendix B to subpart
J of part 431, DOE defines the stable load differential as
[[Page 53374]]
``varies by less than the absolute value of 1 percent, whichever is
greater.'' The term ``whichever is greater'' is unnecessary as there is
not a second criteria. In the May 2023 Final Rule, DOE stated that the
average load differential from one data collection interval to the next
must be within 1 percent. 88 FR 27312, 27362. DOE corrects
this error by removing the text ``whichever is greater'' from section
2.5(b)(3) of appendix B to subpart J of part 431.
DOE identified inconsistencies in the rounding requirements for FEP
for fans and blowers other than air circulating fans. Section 2.6 of
appendix A to subpart J of part 431 specifies that FEP must be rounded
to three significant figures, but Sec. 429.69(a)(1)(ii) and (iv)
specifies that any represented value of FEP, fan shaft input power, or
other measure of energy consumption of a basic model for which
consumers would favor a lower value must be rounded to the nearest
hundredth. 88 FR 27312, 27387-27388, 27393. In the May 2023 Final Rule,
DOE noted that it was adopting requirements that FEP (in kilowatts)
shall be rounded to three significant figures. 88 FR 27312, 27364. DOE
acknowledges that Sec. 429.69(a)(1)(ii) and (iv) contains the
incorrect rounding requirements and DOE is revising these sections to
specify that FEP be rounded to three significant figures. Fan shaft
input power and other measures of energy consumption of a basic model
for which consumers would favor a lower value must still be rounded to
the nearest hundredth.
Also, as part of the stability condition requirements for both air
circulating fans and fans and blowers other than air circulating fans,
in the May 2023 Final Rule, DOE adopted provisions in section 2.4(b)(3)
of appendix A to subpart J of part 431 and section 2.5(b)(4) of
appendix B to subpart J of part 431 that slope of the fan speed, input
power, and load differential \3\ measurements from one data collection
interval to the next shall not be trending positive or negative. 88 FR
27312, 27393, 27394. Specifically, DOE adopted requirements that if the
slope of 3 or more successive data collection intervals are all
positive or all negative, additional data collection intervals must be
run until a negative or positive slope, respectively, is achieved. Id.
DOE notes that the requirements may not be explicit as to whether a
linear trendline should be applied to the data. DOE assumed that a
linear trendline would be used and notes that the requirement to
calculate the ``slope'' for each sampling interval implies a linear fit
trendline, however, DOE is correcting the requirements in section
2.4(b)(3) of appendix A to subpart J of part 431 and section 2.5(b)(4)
of appendix B to subpart J of part 431 to explicitly state that a
linear fit trendline shall be applied when evaluating the slopes for
each data collection interval.
---------------------------------------------------------------------------
\3\ Load differential is applicable to only air circulating
fans.
---------------------------------------------------------------------------
In the May 2023 Final Rule, DOE incorporated by reference AMCA 230-
23 and adopted by reference the equations for calculating ambient air
density, as defined in Equations 8.5 and section 8.6 of AMCA 230-23. 88
FR 27312, 27393. However, DOE identified a typographical error in
Equations 8.5 and section 8.6 of AMCA 230-23. The equations are given
as:
[GRAPHIC] [TIFF OMITTED] TR08AU23.001
[GRAPHIC] [TIFF OMITTED] TR08AU23.002
[GRAPHIC] [TIFF OMITTED] TR08AU23.003
[GRAPHIC] [TIFF OMITTED] TR08AU23.004
II. Need for Correction
As published, the regulatory text in the May 2023 Final Rule may
result in confusion due to the errors discussed in section I of this
document. Because this final rule would simply correct errors in the
text without making substantive changes in the May 2023 Final Rule, the
changes addressed in this document are technical in nature.
III. Procedural Issues and Regulatory Review
DOE has concluded that the determinations made pursuant to the
various procedural requirements applicable to the May 2023 Final Rule
remain unchanged for this final rule technical correction. These
determinations are set forth in the May 2023 Final Rule. 88 FR 27312,
27383-27387.
Pursuant to the Administrative Procedure Act, 5 U.S.C. 553(b), DOE
finds that there is good cause to not issue a separate notice to
solicit public
[[Page 53375]]
comment on the changes contained in this document. Neither the errors
nor the corrections in this document affect the substance of the May
2023 Final Rule or any of the conclusions reached in support of the
final rule. For these reasons, this rule is not subject to the 30-day
delay in effective date requirement of 5 U.S.C. 553(d) otherwise
applicable to rules that make substantive changes.
List of Subjects
10 CFR Part 429
Administrative practice and procedure, Confidential business
information, Energy conservation, Household appliances, Imports,
Intergovernmental relations, Reporting and recordkeeping requirements,
Small businesses.
10 CFR Part 431
Administrative practice and procedure, Confidential business
information, Energy conservation, Household appliances, Imports,
Incorporation by reference, Intergovernmental relations, Laboratories,
Reporting and recordkeeping requirements, Small businesses.
Signing Authority
This document of the Department of Energy was signed on July 19,
2023, by Francisco Alejandro Moreno Acting Assistant Secretary for
Energy Efficiency and Renewable Energy, pursuant to delegated authority
from the Secretary of Energy. That document with the original signature
and date is maintained by DOE. For administrative purposes only, and in
compliance with requirements of the Office of the Federal Register, the
undersigned DOE Federal Register Liaison Officer has been authorized to
sign and submit the document in electronic format for publication, as
an official document of the Department of Energy. This administrative
process in no way alters the legal effect of this document upon
publication in the Federal Register.
Signed in Washington, DC, on July 20, 2023.
Treena V. Garrett,
Federal Register Liaison Officer, U.S. Department of Energy.
For the reasons stated in the preamble, DOE corrects parts 429 and
431 of chapter II, subchapter D, of title 10 of the Code of Federal
Regulations by making the following correcting amendments:
PART 429--CERTIFICATION, COMPLIANCE, AND ENFORCEMENT FOR CONSUMER
PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT
0
1. The authority citation for part 429 continues to read as follows:
Authority: 42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.
Sec. 429.69 [Amended]
0
2. Amend Sec. 429.69 by:
0
a. In paragraph (a)(1)(ii), removing the words ``fan electrical input
power (``FEP'')'' and adding in its place, the words ``fan electrical
power (``FEP'').''
0
b. In paragraphs (a)(1)(ii) and (a)(1)(iv)(B), removing the text
``Represented values must be rounded to the nearest hundredth'' and
adding in its place, the text ``Represented values other than FEP must
be rounded to the nearest hundredth. FEP must be rounded to three
significant figures.''
0
c. In paragraph (a)(1)(iii), removing the words ``fan electrical input
power (``FEI'')'' and adding in its place, the words ``fan energy index
(``FEI'').''
Sec. 429.70 [Amended]
0
3. Amend Sec. 429.70 in paragraph (n)(2)(i) by removing the words
``axial centrifugal power roof ventilator fan'' and adding in its
place, the words ``axial power roof ventilator.''
PART 431--ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND
INDUSTRIAL EQUIPMENT
0
4. The authority citation for part 431 continues to read as follows:
Authority: 42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.
0
5. Amend Sec. 431.172 by revising the definitions for ``Air
circulating fan discharge area'' and ``Fan static air power'' to read
as follows:
Sec. 431.172 Definitions.
* * * * *
Air circulating fan discharge area means the area of a circle
having a diameter equal to the blade tip diameter.
* * * * *
Fan static air power means the static power delivered to air by the
fan or blower; it is proportional to the product of the fan airflow
rate, the fan static pressure and the compressibility coefficient and
is calculated in accordance with section 7.8.1 of AMCA 210-16
(incorporated by reference, see Sec. 431.173), using fan static
pressure instead of fan total pressure.
* * * * *
0
6. Amend Sec. 431.173 by revising paragraph (b)(1) to read as follows:
Sec. 431.173 Materials incorporated by reference.
* * * * *
(b) * * *
(1) ANSI/AMCA Standard 210-16 (``AMCA 210-16''), Laboratory Methods
of Testing Fans for Certified Aerodynamic Performance Rating, ANSI-
approved August 26, 2016; IBR approved for Sec. 431.172; appendix A to
this subpart. (Co-published as ASHRAE 51-16).
* * * * *
0
7. Amend Sec. 431.174 by:
0
a. In paragraph (a)(1), removing the words ``axial centrifugal power
roof ventilator'' and adding in its place, the words ``axial power roof
ventilator'';
0
b. In paragraph (a)(4)(i)(B) and paragraph (c), removing the words
``fan electrical input power'' and adding in its place, the words ``fan
electrical power''; and
0
c. Revising paragraph (d).
The revision read as follows:
Sec. 431.174 Test Procedure for fans or blowers.
* * * * *
(d) Testing and calculations for air circulating fan. Determine the
air circulating fan efficacy in cubic feet per minute per watt at
maximum speed using the test procedure set forth in appendix B to this
subpart.
0
8. Amend appendix A to subpart J of part 431 by revising sections 2.1.,
2.2.1. and 2.4(b), (b)(2), and (3) to read as follows:
Appendix A to Subpart J of Part 431--Uniform Test Method for the
Measurement of Energy Consumption of Fans and Blowers Other Than Air
Circulating Fans
* * * * *
2.1. General.
This section describes the test procedure for fans and blowers
other than air circulating fans. In cases where there is a conflict,
the provisions in this appendix take precedence over AMCA 214-21.
Where AMCA 214-21 refers to Annex A, ``Polyphase Regulated Motor
Efficiencies (Normative),'' of AMCA 214-21, Table 5 of Sec. 431.25
or the currently applicable standards in Sec. 431.25 must be used
instead.
2.2 Testing
2.2.1. General.
The fan electrical power (FEPact) in kilowatts must be
determined at every duty point specified by the manufacturer in
accordance with one of the test methods listed in table 1, and the
following sections of AMCA 214-21: Section 2, ``References
(Normative)''; Section 7, ``Testing,'' including the provisions of
AMCA 210-16 and ISO 5801:2017 as referenced by Section 7 and
[[Page 53376]]
implicated by sections 2.2.2 and 2.2.3 of this appendix; Section
8.1, ``Laboratory Measurement Only'' (as applicable); and Annex J,
``Other data and calculations to be retained.''
Table 1 to Appendix A to Subpart J of Part 431
----------------------------------------------------------------------------------------------------------------
Motor controller Transmission Applicable section(s)
Driver present? configuration? Test method of AMCA 214-21
----------------------------------------------------------------------------------------------------------------
Electric motor................. Yes or No........ Any.............. Wire-to-air...... 6.1 ``Wire-to-Air
Testing at the
Required Duty
Point''.
Electric motor................. Yes or No........ Any.............. Calculation based 6.2 ``Calculated
on Wire-to-air Ratings Based on Wire
testing. to Air Testing''
(references Section
8.2.3, ``Calculation
to other speeds and
densities for wire-to-
air testing,'' and
Annex G, ``Wire-to-
Air Measurement--
Calculation to Other
Speeds and Densities
(Normative)'').
Regulated polyphase motor...... No............... Direct drive, V- Shaft-to-air..... 6.4 ``Fans with
belt drive, Polyphase Regulated
flexible Motors,'' (references
coupling or Annex D, ``Motor
synchronous belt Performance Constants
drive. (Normative)'') *.
None or non-electric........... No............... None............. Shaft-to-air..... Section 6.3, ``Bare
Shaft Fans''.
Regulated polyphase motor...... No............... Direct drive, V- Calculation based Section 8.2.1, ``Fan
belt drive, on Shaft-to-air laws and other
flexible testing. calculation methods
coupling or for shaft-to-air
synchronous belt testing''(references
drive. Annex D, ``Motor
Performance Constants
(Normative),'' Annex
E, ``Calculation
Methods for Fans
Tested Shaft-to-
Air,'' and Annex K,
``Proportionality and
Dimensional
Requirements
(Normative)'').
None or non-electric........... No............... None............. Calculation based Section 8.2.1, ``Fan
on Shaft-to-air laws and other
testing. calculation methods
for shaft-to-air
testing'' (references
Annex E,
``Calculation Methods
for Fans Tested Shaft-
to-Air,'' and Annex
K, ``Proportionality
and Dimensional
Requirements
(Normative)'').
----------------------------------------------------------------------------------------------------------------
* Excluding Section 6.4.1.4, ``Requirements for the VFD, if included'' and Section 6.4.2.4, ``Combined motor-VFD
efficiency.''
Testing must be performed in accordance with the required test
configuration listed in Table 7.1 of AMCA 214-21. The following
values must be determined in accordance with this appendix at each
duty point specified by the manufacturer: fan airflow in cubic feet
per minute; fan air density; fan total pressure in inches of water
gauge for fans using a total pressure basis FEI in accordance with
Table 7.1 of AMCA 214-21; fan static pressure in inches of water
gauge for fans using a static pressure basis FEI in accordance with
Table 7.1 of AMCA 214-21; fan speed in revolutions per minute; and
fan shaft input power in horsepower for fans tested in accordance
with sections 6.3 or 6.4 of AMCA 214-21.
In addition, if applying the equations in Section E.2 of Annex E
of AMCA 214-21 for compressible flows, the compressibility
coefficients must be included in the equations as applicable.
All measurements must be recorded at the resolution of the test
instrumentation and calculations must be rounded to the number of
significant digits present at the resolution of the test
instrumentation.
In cases where there is a conflict, the provisions in AMCA 214-
21 take precedence over AMCA 210-16 and ISO 5801:2017. In addition,
the provisions in this appendix apply.
* * * * *
2.4. Stability Conditions.
* * * * *
(b) After the fan has been run-in, record the fan speed in rpm
and the input power (in horsepower or watts) at least every 5
seconds for at least three 60-second intervals. Readings shall be
made simultaneously. Repeat these measurements over 60-second
intervals until:
* * * * *
(2) The average input power from the last 60-second interval by
reaction dynamometer, torque meter or calibrated motor must be
4 percent, or the average input power by electrical
meter must be 2 percent of the mean or 1 watt, whichever
is greater, compared to the average input power measured during the
previous 60-second test interval; and
(3) The slopes of a linear fit trendline calculated from the
individual data collected for fan speed and input power during at
least three 60-second sampling intervals include both positive and
negative values (e.g., two positive and one negative slope value or
one positive and two negative slope values). If three positive or
three negative slopes are determined in succession, additional
sampling intervals are required until slopes from three successive
sampling intervals include both positive and negative values.
* * * * *
0
9. Amend appendix B to subpart J of part 431 by:
0
a. Revising sections 0.1;
0
b. In section 2.2.1., remove the text ``section 2.2.2 of this
appendix'' and add, in its place, the text ``section 0.1 of this
appendix'';
0
c. Removing section 2.2.2.;
0
d. Revising sections 2.5(b)(3) and (4); and
0
e. Adding section 2.6.
The revisions and addition read as follows:
Appendix B to Subpart J of Part 431--Uniform Test Method for the
Measurement of Energy Consumption of Air Circulating Fans
* * * * *
0.1 AMCA 230-23:
(a) Section 4, ``Definitions/Units of Measurement/Symbols,'';
(b) Section 5, ``Instruments and Methods of Measurement,'';
(c) Section 6, ``Equipment and Setup,'';
(d) Section 7, ``Observations and Conduct of Test,'';
(e) Section 8, ``Calculations,'' excluding equations 8.5 and
8.6; and
(f) Section 9, ``Report and Results of Test,''.
* * * * *
2.5. Stability Conditions.
* * * * *
(b) * * *
(3) The average load differential of the last 120-second
interval varies by less than the absolute value of 1 percent
compared to the average load differential during the previous 120-
second test interval; and
[[Page 53377]]
(4) The slopes of a linear fit trendline calculated from the
individual data collected for fan speed, input power, and load
differential during at least three 120-second intervals include both
positive and negative values (e.g., two positive and one negative
slope value or one positive and two negative slope values). If three
positive or three negative slopes are determined in succession,
additional sampling intervals are required until slopes from three
successive 120-second intervals include both positive and negative
values.
2.6. Calculation of Ambient Air Density.
For any references to ambient air density, [rho]0, in AMCA 230-
23, calculate [rho]0, expressed in kg/m3 when using SI units or lbm/
ft3 when using I-P units, as follows:
[GRAPHIC] [TIFF OMITTED] TR08AU23.005
[GRAPHIC] [TIFF OMITTED] TR08AU23.006
where pb is the measured barometric pressure of the air,
Td0 is the measured dry-bulb temperature of the air,
pp is the partial vapor pressure, R is the gas constant,
which are all determined according to section 8.2 of AMCA 230-23.
[FR Doc. 2023-15712 Filed 8-7-23; 8:45 am]
BILLING CODE 6450-01-P