§429.67. Air-cooled, three-phase, small commercial package air conditioning and heating equipment with a cooling capacity of less than 65,000 British thermal units per hour and air-cooled, three-phase, variable refrigerant flow multi-split air conditioners and heat pumps with a cooling capacity of less than 65,000 British thermal units per hour. — Inbound Citations

(a) When testing of covered products or covered equipment is required to comply with section 323(c) of the Act, or to comply with rules prescribed under sections 324, 325, 342, 344, 345 or 346 of the Act, a sample comprised of production units (or units representative of production units) of the basic model being tested must be selected at random and tested and must meet the criteria found in §§ 429.14 through 429.69 and § 429.76. Components of similar design may be substituted without additional testing if the substitution does not affect energy or water consumption. Any represented values of measures of energy efficiency, water efficiency, energy consumption, or water consumption for all individual models represented by a given basic model must be the same, except for central air conditioners and central air conditioning heat pumps, as specified in § 429.16; and

(13) Product specific information listed in §§ 429.14 through 429.63 of this chapter.

(1) AHRI Standard 210/240-2023, (“AHRI 210/240-2023”), 2023 Standard for Performance Rating of Unitary Air-conditioning & Air-source Heat Pump Equipment, copyright 2020; IBR approved for § 429.67.

(a) A manufacturer of covered products or covered equipment explicitly authorized to use an AEDM in §§ 429.14 through 429.69 may not distribute any basic model of such product or equipment in commerce unless the manufacturer has determined the energy consumption or energy efficiency of the basic model, either from testing the basic model in conjunction with DOE's certification sampling plans and statistics or from applying an alternative method for determining energy efficiency or energy use (i.e., AEDM) to the basic model, in accordance with the requirements of this section. In instances where a manufacturer has tested a basic model to validate the AEDM, the represented value of energy consumption or efficiency of that basic model must be determined and certified according to results from actual testing in conjunction with 10 CFR part 429, subpart B certification sampling plans and statistics. In addition, a manufacturer may not knowingly use an AEDM to overrate the efficiency of a basic model.

(A) For single-package systems and single-split systems, manufacturers may instead choose to make each individual model/combination its own basic model provided the testing and represented value requirements in 10 CFR 429.67 are met; and

(v) For basic models that include SDHV and an indoor unit of another variety (i.e., non-ducted, low-static, mid-static, and conventional ducted), the represented value for the mixed SDHV/other combination is the mean of the represented values for the SDHV and other tested combination as determined in accordance with paragraphs (c)(1) and (2) and paragraphs (d)(3)(i) through (ii) of this section.

(v) For basic models that include SDHV and an indoor unit of another variety (i.e., non-ducted, low-static, mid-static, and conventional ducted), the represented value for the mixed SDHV/other combination is the mean of the represented values for the SDHV and other tested combination as determined in accordance with paragraphs (c)(1) and (2) and paragraphs (d)(3)(i) through (ii) of this section.

(vi) 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 of paragraphs (c)(1) and (2) and (d)(3)(i) through (v) of this section apply.

(vi) 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 of paragraphs (c)(1) and (2) and (d)(3)(i) through (v) of this section apply.

(vi) 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 of paragraphs (c)(1) and (2) and (d)(3)(i) through (v) of this section apply.

(v) For basic models that include SDHV and an indoor unit of another variety (i.e., non-ducted, low-static, mid-static, and conventional ducted), the represented value for the mixed SDHV/other combination is the mean of the represented values for the SDHV and other tested combination as determined in accordance with paragraphs (c)(1) and (2) and paragraphs (d)(3)(i) through (ii) of this section.

(vi) 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 of paragraphs (c)(1) and (2) and (d)(3)(i) through (v) of this section apply.

(2) A manufacturer may not apply an AEDM to an individual model/combination to determine its represented values (SEER2 and HSPF2, as applicable) pursuant to this section unless authorized pursuant to § 429.67(e) and:

(i) The AEDM is derived from a mathematical model that estimates the energy efficiency or energy consumption characteristics of the individual model or combination (SEER2 and HSPF2, as applicable) as measured by the applicable DOE test procedure; and