Central air conditioners and central air conditioning heat pumps.

CFR · 2024-01-01 · US · Title 10

(a) (2) (3) (ii) If a model is approved for use with multiple refrigerants, a manufacturer may make multiple separate representations for the performance of that model (all within the same individual combination or outdoor unit with no match) using the multiple approved refrigerants. In the alternative, manufacturers may certify the model (all within the same individual combination or outdoor unit with no match) with a single representation, provided that the represented value is no more efficient than its performance using the least-efficient refrigerant. If a manufacturer certifies a single model with multiple representations for the different approved refrigerants, it may use an AEDM to determine the represented values for all other refrigerants besides the refrigerant used for testing. A single representation made for multiple refrigerants may not include equipment in multiple categories or equipment subcategories listed in the table in paragraph (a)(1) of this section. (4) (i) (ii) (5) (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) ( ( (iii) (A) Less than or equal to the lower of: ( ( (B) Rounded according to: ( ( ( (c) (A) A sample of sufficient size, comprised of production units or representing production units, must be test

official document · source cfr-2024 · id 10:§ 429.16