(a)

(2)

(3)

(i)

(ii)

(4)

(b)

(2)

(ii) Each individual model/combination (or “tested combination”) identified in paragraph (b)(2)(i) of this section is not required to be tested for P

(3)

(i)

(A) The mean of the sample, where:

(B) The upper 90 percent confidence limit (UCL) of the true mean divided by 1.05, where:

(ii)

(A) The mean of the sample, where:

(B) The lower 90 percent confidence limit (LCL) of the true mean divided by 0.95, where:

(iii)

(A) To the nearest 100 Btu/h if cooling capacity is less than 20,000 Btu/h,

(B) To the nearest 200 Btu/h if cooling capacity is greater than or equal to 20,000 Btu/h but less than 38,000 Btu/h, and

(C) To the nearest 500 Btu/h if cooling capacity is greater than or equal to 38,000 Btu/h and less than 65,000 Btu/h.

(iv)

(A) To the nearest 100 Btu/h if heating capacity is less than 20,000 Btu/h,

(B) To the nearest 200 Btu/h if heating capacity is greater than or equal to 20,000 Btu/h but less than 38,000 Btu/h, and

(C) To the nearest 500 Btu/h if heating capacity is greater than or equal to 38,000 Btu/h and less than 65,000 Btu/h.

(c)

(A) A sample of sufficient size, comprised of production units or representing production units, must be tested as complete systems with the resulting represented values for the individual model/combination obtained in accordance with paragraphs (b)(1) and (3) of this section; or

(B) The represented values of the measures of energy efficiency or energy consumption must be assigned through the application of an AEDM in accordance with paragraph (d) of this section and § 429.70. An AEDM may only be used to rate individual models/combinations in a basic model other than the individual model/combination required for mandatory testing under paragraph (b)(2)(i) of this section. No basic model may be rated with an AEDM (except for determination of P

(ii) For every individual model/combination within a basic model tested pursuant to paragraph (b)(2) of this section, but for which P

(A) The testing result from an individual model/combination of similar off-mode construction, or

(B) The application of an AEDM in accordance with paragraph (d) of this section and § 429.70.

(2)

(3)

(i) For basic models composed of both non-ducted and ducted combinations, the represented value for the mixed non-ducted/ducted combination is the mean of the represented values for the non-ducted and ducted combinations as determined in accordance with paragraph (b)(3)(i) of this section.

(ii) For basic models composed of both SDHV and non-ducted or ducted combinations, the represented value for the mixed SDHV/non-ducted or SDHV/ducted combination is the mean of the represented values for the

(iii) All other individual combinations of models of indoor units for the same model of outdoor unit for which the manufacturer chooses to make representations must be rated as separate basic models, and the provisions in paragraphs (b)(1) through (3) and (c)(3)(i) and (ii) of this section apply.

(iv) For every individual combination (or “tested combination”) within a basic model tested pursuant to paragraph (b)(2) of this section, but for which P

(A) The testing result from an individual combination (or “tested combination”) of similar off-mode construction, or

(B) Application of an AEDM in accordance with paragraph (d) of this section and § 429.70. No basic model may be rated with an AEDM for SEER, EER, or HSPF.

(d)

(1)

(2)

(3)

(4)

(e)

(1)

(2)

(i) For heat pumps, the heating seasonal performance factor (HSPF in British thermal units per Watt-hour (Btu/W-h));

(ii) For air conditioners (excluding space constrained), the energy efficiency ratio (EER in British thermal units per Watt-hour (Btu/W-h));

(iii) For single-split-system equipment, whether the represented value is for a coil-only or blower coil system; and

(iv) For multi-split, multiple-circuit, and multi-head mini-split systems (including VRF), whether the represented value is for a non-ducted, ducted, mixed non-ducted/ducted system, SDHV, mixed non-ducted/SDHV system, or mixed ducted/SDHV system.

(3)

(4)

(i) For heat pumps, whether the optional tests were conducted to determine the C

(ii) For multi-split, multiple-circuit, and multi-head mini-split systems, the number of indoor units tested with the outdoor unit; the nominal cooling capacity of each indoor unit and outdoor unit in the combination; and the indoor units that are not providing heating or cooling for part-load tests;

(iii) For ducted systems having multiple indoor fans within a single indoor unit, the number of indoor fans; the nominal cooling capacity of the indoor unit and outdoor unit; and which fan(s) were operating and the allocation of the air volume rate to each operational fan for each operating mode used to determine represented values;

(iv) For blower coil systems, the airflow-control settings associated with full load cooling operation; and the airflow-control settings or alternative instructions for setting fan speeds for tests other than full load cooling operation to the speeds upon which the represented value is based;

(v) For equipment with time-adaptive defrost control, the frosting interval to be used during frost accumulation tests and the procedure for manually initiating the defrost at the specified time;

(vi) For models of indoor units designed for both horizontal and vertical installation or for both up-flow and down-flow vertical installations, the orientation used for testing;

(vii) For variable speed equipment, the compressor frequency set points, and the required dip switch/control settings for step or variable components; and

(f)

(1)

(i) The quotient of the represented value of cooling capacity, in Btu's per hour as determined in paragraph (b)(3)(iii) of this section, divided by the represented value of SEER, in Btu's per watt-hour, as determined in paragraph (b)(3)(ii) of this section;

(ii) The representative average use cycle for cooling of 1,000 hours per year;

(iii) A conversion factor of 0.001 kilowatt per watt; and

(iv) The representative average unit cost of electricity in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act.

(2)

(i) The quotient of the mean of the standardized design heating requirement for the sample, in Btu's per hour, nearest to the Region IV minimum design heating requirement, determined for each unit in the sample in section 4.2 of appendix M to subpart B of part 430, divided by the represented value of heating seasonal performance factor (HSPF), in Btu's per watt-hour, calculated for Region IV corresponding to the above-mentioned standardized design heating requirement, as determined in paragraph (b)(3)(ii) of this section;

(ii) The representative average use cycle for heating of 2,080 hours per year;

(iii) The adjustment factor of 0.77, which serves to adjust the calculated design heating requirement and heating load hours to the actual load experienced by a heating system;

(iv) A conversion factor of 0.001 kilowatt per watt; and

(v) The representative average unit cost of electricity in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act.

(3)

(4)

(i) The quotient of the represented value of cooling capacity, in Btu's per hour, determined in paragraph (b)(3)(iii) of this section divided by the represented value of SEER, in Btu's per watt-hour, determined in paragraph (b)(3)(ii) of this section;

(ii) The estimated number of regional cooling load hours per year determined from Table 21 in section 4.4 of appendix M to subpart B of part 430;

(iii) A conversion factor of 0.001 kilowatts per watt; and

(iv) The representative average unit cost of electricity in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act.

(5)

(i) The estimated number of regional heating load hours per year determined from Table 21 in section 4.4 of appendix M to subpart B of part 430;

(ii) The quotient of the mean of the standardized design heating requirement for the sample, in Btu's per hour,

(iii) The adjustment factor of 0.77; which serves to adjust the calculated design heating requirement and heating load hours to the actual load experienced by a heating system;

(iv) A conversion factor of 0.001 kilowatts per watt; and

(v) The representative average unit cost of electricity in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act; and

(6)

(7)