§429.70. Alternative methods for determining energy efficiency and energy use. — Inbound Citations

(B) The represented values of the measures of energy efficiency or energy consumption through the application of an AEDM in accordance with paragraph (d) of this section and § 429.70. An AEDM may only be used to determine represented values for individual models or combinations in a basic model (or separate approved refrigerants within an individual combination) other than the individual model or combination(s) required for mandatory testing under paragraph (b)(2) of this section.

(1) Manufacturers must determine the represented value for each water heater by applying an AEDM in accordance with 10 CFR 429.70 or by testing for the uniform energy factor, in conjunction with the applicable sampling provisions as follows:

(i) If the represented value is determined through testing, the general requirements of 10 CFR 429.11 are applicable; and

(ii) For each basic model selected for testing, a sample of sufficient size shall be randomly selected and tested to ensure that—

(A) Any represented value of the estimated annual operating cost or other measure of energy consumption of a basic model for which consumers would favor lower values shall be greater than or equal to the higher of:

(1) The mean of the sample, where:

(2) The upper 95-percent confidence limit (UCL) of the true mean divided by 1.10, where:

And x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t statistic for a 95-percent one-tailed confidence interval with n-1 degrees of freedom (from Appendix A).

(B) Any represented value of the uniform energy factor, 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 lower of:

(1) The mean of the sample, where:

(2) The lower 95-percent confidence limit (LCL) of the true mean divided by 0.90, where:

And x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t statistic for a 95-percent one-tailed confidence interval with n-1 degrees of freedom (from Appendix A).

(C) Any represented value of the rated storage volume must be equal to the mean of the measured storage volumes of all the units within the sample. Any represented value of the effective storage volume must be equal to the mean of the effective storage volumes of all the units within the sample.

(D) Any represented value of first-hour rating or maximum gallons per minute (GPM) must be equal to the mean of the measured first-hour ratings or measured maximum GPM ratings, respectively, of all the units within the sample.

(E) For an electric storage water heater that has a permanent mode or setting in which it is capable of heating and storing water above 135 °F, where permanent mode or setting means a mode of operation that is continuous and does not require any external consumer intervention to maintain for longer than 120 hours, except for those that meet the definition of “heat pump-type” water heater at § 430.2 of this chapter, whose rated storage volumes are less than 20 gallons or greater than 55 gallons, or that are only capable of heating the stored water above 135 °F in response to instructions received from a utility or third-party demand-response program, the following applies:

(1) To demonstrate compliance with the energy conservation standards in § 430.32(d)(1) of this chapter, any represented value of uniform energy factor shall be determined based on testing in accordance with section 5.1.1 of appendix E to subpart B of 10 CFR part 430.

(2) To demonstrate compliance with the energy conservation standards in § 430.32(d)(2) of this chapter, any represented value of uniform energy factor shall be determined based on high temperature testing in accordance with section 5.1.2 of appendix E to subpart B of 10 CFR part 430.

(2) In lieu of testing, a represented value of efficiency or consumption for a basic model of commercial warm air furnace must be determined through the application of an AEDM pursuant to the requirements of § 429.70 and the provisions of this section, where:

(i) Any represented value of energy consumption or other measure of energy use of a basic model for which consumers would favor lower values shall be greater than or equal to the output of the AEDM and less than or equal to the Federal standard for that basic model; and

(ii) Any represented value of energy efficiency 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 output of the AEDM and greater than or equal to the Federal standard for that basic model.

(2) In lieu of testing, a represented value of efficiency or consumption for a basic model of commercial refrigerator, freezer or refrigerator-freezer must be determined through the application of an AEDM pursuant to the requirements of § 429.70 and the provisions of this section, where:

(i) Any represented value of energy consumption or other measure of energy use of a basic model for which consumers would favor lower values shall be greater than or equal to the output of the AEDM and less than or equal to the Federal standard for that basic model; and

(ii) Any represented value of energy efficiency 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 output of the AEDM and greater than or equal to the Federal standard for that basic model.

(i) In lieu of testing, a represented value of efficiency or consumption for a basic model of commercial HVAC equipment must be determined through the application of an AEDM pursuant to the requirements of § 429.70 and the provisions of this section, where:

(A) Any represented value of energy consumption or other measure of energy use of a basic model for which consumers would favor lower values shall be greater than or equal to the output of the AEDM and less than or equal to the Federal standard for that basic model; and

(B) Any represented value of energy efficiency 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 output of the AEDM and greater than or equal to the Federal standard for that basic model.

(b) Manufacturers must determine the represented values, which includes the certified ratings, for each basic model of commercial water heating equipment except residential-duty commercial water heaters, either by testing, in conjunction with the applicable sampling provisions, or by applying an AEDM as set forth in § 429.70.

(1) If the represented value for a given basic model is determined through testing:

(i) The general requirements of § 429.11 apply; and

(ii) A sample of sufficient size must be randomly selected and tested to ensure that:

(A) Any represented value of energy consumption or other measure of energy use of a basic model for which consumers would favor lower values must be greater than or equal to the higher of:

(1) The mean of the sample, where:

And, x is the sample mean; n is the number of samples; and xi is the ith sample; or,

(2) The upper 95-percent confidence limit (UCL) of the true mean divided by 1.05, where:

And x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t statistic for a 95-percent one-tailed confidence interval with n-1 degrees of freedom (from appendix A to subpart B of this part). And,

(B) Any represented value of energy efficiency or other measure of energy consumption of a basic model for which consumers would favor higher values must be less than or equal to the lower of:

(1) The mean of the sample, where:

And, x is the sample mean; n is the number of samples; and xi is the ith sample; or,

(2) The lower 95-percent confidence limit (LCL) of the true mean divided by 0.95, where:

And x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t statistic for a 95-percent one-tailed confidence interval with n-1 degrees of freedom (from appendix A to subpart B of this part).

(2) In lieu of testing, a represented value of efficiency or consumption for a basic model must be determined through the application of an AEDM pursuant to the requirements of § 429.70 and the provisions of this section, where:

(i) Any represented value of energy consumption or other measure of energy use of a basic model for which consumers would favor lower values must be greater than or equal to the output of the AEDM and less than or equal to the Federal standard for that basic model; and

(ii) Any represented value of energy efficiency or other measure of energy consumption of a basic model for which consumers would favor higher values must be less than or equal to the output of the AEDM and greater than or equal to the Federal standard for that basic model.

(3) The rated input for a basic model reported in accordance with paragraph (c)(2) of this section must be the maximum rated input listed on the nameplate for that basic model.

(2) For each basic model of distribution transformer, efficiency must be determined either by testing, in accordance with § 431.193 and the provisions of this section, or by application of an AEDM that meets the requirements of § 429.70 and the provisions of this section.

(A) If the manufacturer produces five or fewer units of a basic model over 6 months, each unit must be tested. A manufacturer may not use a basic model with a sample size of fewer than five units to substantiate an AEDM pursuant to § 429.70.

(B) If the manufacturer produces more than five units over 6 months, a sample of at least five units must be selected and tested.

(ii) Any represented value of efficiency of a basic model must satisfy the condition:

(2) For each basic model of walk-in cooler and walk-in freezer refrigeration system, the annual walk-in energy factor (AWEF) must be determined either by testing, in accordance with § 431.304 of this chapter and the provisions of this section, or by application of an AEDM that meets the requirements of § 429.70 and the provisions of this section.

(i) If AWEF or AWEF2 is determined by testing, test according to the applicable provisions of § 431.304(b) of this chapter with the following equipment-specific provisions.

(A) Outdoor dedicated condensing refrigeration systems that are also designated for use in indoor applications must be tested and rated as both an outdoor dedicated condensing refrigeration system and an indoor dedicated refrigeration system.

(B) A matched refrigeration system is not required to be rated if the constituent unit cooler(s) and dedicated condensing unit have been tested as specified in § 431.304(b)(4) of this chapter. However, if a manufacturer wishes to represent the efficiency of the matched refrigeration system as distinct from the efficiency of either constituent component, or if the manufacturer cannot rate one or both of the constituent components using the specified method, the manufacturer must test and rate the matched refrigeration system as specified in § 431.304(b)(4) of this chapter.

(C) Detachable single-packaged dedicated systems must be tested and rated as a single-packaged dedicated systems using the test procedure in § 431.304(b)(4) of this chapter.

(D) Attached split systems must be tested and rated as dedicated condensing units and unit coolers using the test procedure in § 431.304(b)(4) of this chapter.

(A) If the represented value for a given refrigeration system basic model is determined through testing, the general requirements of § 429.11 apply; and

(B) For each basic model, a sample of sufficient size shall be randomly selected and tested to ensure that any represented value of AWEF or other measure of energy efficiency of a basic model for which consumers would favor higher values shall be less than or equal to the lower of:

(1) The mean of the sample, where:

And x is the sample mean; n is the number of samples; and xi is the i th sample, or,

(2) The lower 95 percent confidence limit (LCL) of the true mean divided by 0.95, where:

And x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t statistic for a 95% one-tailed confidence interval with n-1 degrees of freedom (from appendix A to subpart B).

(C) The represented value of net capacity shall be the average of the capacities measured for the sample selected.

(iii) In lieu of testing, pursuant to the requirements of § 429.70 and the provisions of this section, a represented value of AWEF for a basic model of a walk-in cooler or walk-in freezer refrigeration system may be determined through the application of an AEDM, where:

(A) Any represented value of AWEF or other measure of energy efficiency of a basic model for which consumers would favor higher values shall be less than or equal to the output of the AEDM and greater than or equal to the Federal standard for that basic model.

(B) The represented value of net capacity must be the net capacity simulated by the AEDM.

(a) Manufacturers must determine the represented value, which includes the certified rating, for each basic model of general purpose pump either by testing (which includes the calculation-based methods in the test procedure), in conjunction with the following sampling provisions, or by application of an AEDM that meets the requirements of § 429.70 and the provisions of this section. Manufacturers must determine the represented value, which includes the certified rating, for each basic model of dedicated-purpose pool pump by testing, in conjunction with the following sampling provisions. Manufacturers must update represented values to account for any change in the applicable motor standards in subpart B of part 431 of this chapter and certify amended values as of the next annual certification.

(1) The requirements of § 429.11 are applicable to pumps; and for each basic model, a sample of sufficient size shall be randomly selected and tested to ensure that—

(i) Any representation of the constant load pump energy index (PEICL), variable load pump energy index (PEIVL), circulator energy index (CEI), or other measure of energy consumption of a basic model for which consumers would favor lower values shall be greater than or equal to the higher of:

(A) The mean of the sample,

Or,

(B) The upper 95 percent confidence limit (UCL) of the true mean divided by 1.05,

(ii) Any representation of weighted energy factor of a basic model must be less than or equal to the lower of:

(A) And x is the sample mean; n is the number of samples; and xi is the maximum of the ith sample; or,

(B) The lower 95 percent confidence limit (LCL) of the true mean divided by 0.95, where:

And x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t statistic for a 95 percent one-tailed confidence interval with n-1 degrees of freedom (from appendix A of this subpart).

(i) The representative value of rated hydraulic horsepower of a basic model of dedicated-purpose pool pump or circulator pump must be the mean of the rated hydraulic horsepower for each tested unit.

(ii) The representative value of dedicated-purpose pool pump motor total horsepower of a basic model of dedicated-purpose pool pump must be the mean of the dedicated-purpose pool pump motor total horsepower for each tested unit.

(iii) i). The representative value of true power factor at each load point i of a basic model of dedicated-purpose pool pump must be the mean of the true power factors at that load point for each tested unit of dedicated-purpose pool pump.

(iv) The representative values for pump total head in feet at BEP and nominal speed, volume per unit time in gallons per minute at BEP and nominal speed, and calculated driver power input at each load point must be the arithmetic mean of the value determined for each tested unit of general pump.

(v) The representative value(s) of input power of a basic model of circulator pump at a load point(s) used in the calculation of CEI must be determined based on the mean of the input power at measured data point(s) for each tested unit.

(vi) The representative value of flow at BEP and maximum speed of a basic model of circulator pump must be determined based on the mean of the flow at BEP and maximum speed for each tested unit.

(vii) The representative value of head at BEP and maximum speed of a basic model of circulator pump must be determined based on the mean of the head at BEP and maximum speed for each tested unit.

(viii) The representative value of any other reported value of a basic model of circulator pump must be determined based on the mean of that value for each tested unit.

(3) In lieu of testing, a represented value of efficiency or consumption for a basic model of pump must be determined through the application of an AEDM pursuant to the requirements of § 429.70 and the provisions of this section, where:

(i) Any represented value of energy consumption or other measure of energy use of a basic model for which consumers would favor lower values shall be greater than or equal to the output of the AEDM and less than or equal to the Federal standard for that basic model; and

(ii) Any represented value of energy efficiency 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 output of the AEDM and greater than or equal to the Federal standard for that basic model.

(2) In lieu of testing, a represented value of efficiency or consumption for a basic model of commercial packaged boiler must be determined through the application of an AEDM pursuant to the requirements of § 429.70 and the provisions of this section, where:

(i) Any represented value of energy consumption or other measure of energy use of a basic model for which consumers would favor lower values shall be greater than or equal to the output of the AEDM and less than or equal to the Federal standard for that basic model; and

(ii) Any represented value of energy efficiency 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 output of the AEDM and greater than or equal to the Federal standard for that basic model.

(2) In lieu of testing, any represented value of efficiency, consumption, or other non-energy metrics listed in paragraph (a)(3) of this section for a basic model may be determined through the application of an AEDM pursuant to the requirements of § 429.70 and the provisions of this section, where:

(i) Any represented values of package isentropic efficiency or other measure of energy consumption of a basic model for which customers would favor higher values must be less than or equal to the output of the AEDM; and

(ii) Any represented values of package specific power, pressure ratio at full-load operating pressure, full-load actual volume flow rate, or full-load operating pressure must be the output of the AEDM corresponding to the represented value of package isentropic efficiency determined in paragraph (a)(2)(i) of this section.

(ii) The represented values of the measures of energy efficiency or energy consumption through the application of an AEDM in accordance with paragraph (e) of this section and § 429.70.

(a) The manufacturer of any covered product or covered equipment shall establish, maintain, and retain the records of certification reports, of the underlying test data for all certification testing, and of any other testing conducted to satisfy the requirements of this part, part 430, and part 431. Any manufacturer who chooses to use an alternative method for determining energy efficiency or energy use in accordance with § 429.70 must retain the records required by that section, any other records of any testing performed to support the use of the alternative method, and any certifications required by that section, on file for review by DOE for two years following the discontinuance of all models or combinations whose ratings were based on the alternative method.

(i) For air-cooled, three-phase, small commercial package air conditioning and heating equipment with a cooling capacity of less than 65,000 Btu/h and air-cooled, three-phase, variable refrigerant flow multi-split air conditioners and heat pumps with a cooling capacity of less than 65,000 Btu/h subject to standards in terms of seasonal energy efficiency ratio (SEER) and heating seasonal performance factor (HSPF), representations with respect to the energy use or efficiency, including compliance certifications, are subject to the requirements in § 429.70(c) of this title as it appeared in the 10 CFR parts 200-499 edition revised as of January 1, 2021.

(ii) For any basic model rated with an AEDM, whether the manufacturer elects the witness test option for verification testing. (See § 429.70(c)(5)(iii) for options). However, the manufacturer may not select more than 10% of AEDM-rated basic models.

(ii) For any basic model rated with an AEDM, whether the manufacturer elects the witness test option for verification testing. (See § 429.70(c)(5)(iii) for options). However, the manufacturer may not select more than 10% of AEDM-rated basic models.

(ii) For any basic model rated with an AEDM, whether the manufacturer elects the witness test option for verification testing. (See § 429.70(c)(5)(iii) for options). However, the manufacturer may not select more than 10% of AEDM-rated basic models.

(ii) For any basic model rated with an AEDM, whether the manufacturer elects the witness test option for verification testing. (See § 429.70(c)(5)(iii) for options.) However, the manufacturer may not select more than 10 percent of AEDM-rated basic models to be eligible for witness testing.

(ii) For any basic model rated with an AEDM, whether the manufacturer elects the witness test option for verification testing. (See § 429.70(c)(5)(iii) for options). However, the manufacturer may not select more than 10% of AEDM-rated basic models to be eligible for witness testing.

(d) In lieu of testing, represented values of efficiency or consumption may be determined through the application of an AEDM pursuant to the requirements of § 429.70(e) and the provisions of this section.

(1) Any represented value of the average off mode power consumption or other measure of energy consumption of an individual model/combination for which consumers would favor lower values must be greater than or equal to the output of the AEDM but no greater than the standard.

(2) Any represented value of the EER2, SEER2, HSPF2, EER, SCORE and SHORE, or other measure of energy efficiency of an individual model/combination for which consumers would favor higher values must be less than or equal to the output of the AEDM but no less than the standard.

(3) The represented value of cooling capacity of an individual model/combination must be no greater than the cooling capacity output simulated by the AEDM.

(4) The represented value of heating capacity of an individual model/combination must be no greater than the heating capacity output simulated by the AEDM.

(3) For manufacturers whose models of air-cooled, three-phase, small commercial package air conditioning and heating equipment with a cooling capacity of less than 65,000 Btu/h or air-cooled, three-phase, variable refrigerant flow multi-split air conditioners and heat pumps with a cooling capacity of less than 65,000 Btu/h are otherwise identical to their central air conditioner and heat pump models (meaning differing only in phase or voltage of the electrical system and the phase or voltage of power input for which the motors and compressors are designed) and who have validated an AEDM for the otherwise identical central air conditioners and heat pumps under § 429.70(e)(2), no additional validation is required. For manufacturers whose models of air-cooled, three-phase, small commercial package air conditioning and heating equipment with a cooling capacity of less than 65,000 Btu/h or air-cooled, three-phase, variable refrigerant flow multi-split air conditioners and heat pumps with a cooling capacity of less than 65,000 Btu/h who have not validated an AEDM for otherwise identical central air conditioners and heat pumps under § 429.70(e)(2) must, before using an AEDM, validate the AEDM's accuracy and reliability as follows:

(i) The manufacturer must test a single unit each of two basic models in accordance with paragraph (i)(3)(iii) of this section. Using the AEDM, calculate the energy use or efficiency for each of the tested individual models/combinations within each basic model. Compare the represented value based on testing and the AEDM energy use or efficiency output according to paragraph (i)(3)(ii) of this section. The manufacturer is responsible for ensuring the accuracy and reliability of the AEDM and that their representations are appropriate and the models being distributed in commerce meet the applicable standards, regardless of the amount of testing required in this paragraph.

(ii) This paragraph (i)(3)(ii) provides the tolerances applicable to individual models/combinations rated using an AEDM.

(A) The predicted represented values for each individual model/combination calculated by applying the AEDM may not be more than four percent greater (for measures of efficiency) or less (for measures of consumption) than the values determined from the corresponding test of the individual model/combination.

(B) The predicted energy efficiency or consumption for each individual model/combination calculated by applying the AEDM must meet or exceed the applicable federal energy conservation standard.

(A) Each AEDM must be supported by test data obtained from physical tests of current individual models/combinations; and

(B) Test results used to validate the AEDM must meet or exceed current, applicable Federal standards as specified in part 431 of this chapter; and

(C) Each test must have been performed in accordance with the applicable DOE test procedure with which compliance is required at the time the individual models/combinations used for validation are distributed in commerce.

(i) Table 2 to this paragraph (b)(2)(i) identifies the minimum testing requirements for each basic model that includes multiple individual models/combinations; if a basic model spans multiple categories or subcategories listed in table 2, multiple testing requirements apply. For each basic model that includes only one individual model/combination, test that individual model/combination.

(2) In lieu of testing, the represented value of nominal full-load efficiency for a basic model of electric motor must be determined through the application of an AEDM pursuant to the requirements of § 429.70(j) and the provisions of this paragraph (b) and paragraph (c) of this section, where:

(i) The average full-load efficiency of any basic model used to validate an AEDM must be calculated under paragraph (c) of this section.

(ii) The represented value is the nominal full-load efficiency of a basic model of electric motor and is to be used in marketing materials and all public representations, as the certified value of efficiency, and on the nameplate. (See § 431.31(a) of this subchapter.) Determine the nominal full-load efficiency by selecting a value from the “Nominal Full-Load Efficiency” table in appendix B to subpart B of this part that is no greater than the simulated full-load efficiency predicted by the AEDM for the basic model.

(4) In the case of electric motors subject to requirements in subpart B of part 431 of this subchapter, the certification program must have expertise in the content and application of the test procedures at § 431.16 of this subchapter and must apply the provisions at §§ 429.64 and 429.70(j); or

(i) A manufacturer must select at least five basic models compliant with any relevant energy conservation standards at § 431.485 of this subchapter (if any), in accordance with the criteria paragraphs (j)(2)(i)(A) through (D) of this section. In any instance where it is impossible for a manufacturer to select basic models for testing in accordance with all of these criteria, prioritize the criteria in the order in which they are listed. Within the limits imposed by the criteria, select basic models randomly. In addition, a basic model with a sample size of fewer than five units may not be selected to validate an AEDM.

(A) Two of the basic models must be among the five basic models with the highest unit volumes of production by the manufacturer in the prior 5 years.

(B) No two basic models may have the same total horsepower rating;

(C) No two basic models may have the same speed configuration; and

(D) Each basic model must have the lowest full-load efficiency among the basic models within the same equipment class.

(i) A manufacturer must select at least five basic models compliant with any relevant energy conservation standards at § 431.485 of this subchapter (if any), in accordance with the criteria paragraphs (j)(2)(i)(A) through (D) of this section. In any instance where it is impossible for a manufacturer to select basic models for testing in accordance with all of these criteria, prioritize the criteria in the order in which they are listed. Within the limits imposed by the criteria, select basic models randomly. In addition, a basic model with a sample size of fewer than five units may not be selected to validate an AEDM.

(A) Two of the basic models must be among the five basic models with the highest unit volumes of production by the manufacturer in the prior 5 years.

(B) No two basic models may have the same total horsepower rating;

(C) No two basic models may have the same speed configuration; and

(D) Each basic model must have the lowest full-load efficiency among the basic models within the same equipment class.

(i) A manufacturer must select at least five basic models compliant with any relevant energy conservation standards at § 431.485 of this subchapter (if any), in accordance with the criteria paragraphs (j)(2)(i)(A) through (D) of this section. In any instance where it is impossible for a manufacturer to select basic models for testing in accordance with all of these criteria, prioritize the criteria in the order in which they are listed. Within the limits imposed by the criteria, select basic models randomly. In addition, a basic model with a sample size of fewer than five units may not be selected to validate an AEDM.

(A) Two of the basic models must be among the five basic models with the highest unit volumes of production by the manufacturer in the prior 5 years.

(B) No two basic models may have the same total horsepower rating;

(C) No two basic models may have the same speed configuration; and

(D) Each basic model must have the lowest full-load efficiency among the basic models within the same equipment class.

(i) A manufacturer must select at least five basic models compliant with any relevant energy conservation standards at § 431.485 of this subchapter (if any), in accordance with the criteria paragraphs (j)(2)(i)(A) through (D) of this section. In any instance where it is impossible for a manufacturer to select basic models for testing in accordance with all of these criteria, prioritize the criteria in the order in which they are listed. Within the limits imposed by the criteria, select basic models randomly. In addition, a basic model with a sample size of fewer than five units may not be selected to validate an AEDM.

(A) Two of the basic models must be among the five basic models with the highest unit volumes of production by the manufacturer in the prior 5 years.

(B) No two basic models may have the same total horsepower rating;

(C) No two basic models may have the same speed configuration; and

(D) Each basic model must have the lowest full-load efficiency among the basic models within the same equipment class.

(2) Testing was conducted using a laboratory other than an accredited laboratory that meets the requirements of paragraph (d) of this section, or the full-load efficiency of the dedicated-purpose pool pump motor basic model was determined through the application of an AEDM pursuant to the requirements of § 429.70(k), and a third-party certification organization that is nationally recognized in the United States under § 429.73 has certified the full-load efficiency of the dedicated-purpose pool pump motor basic model through issuance of a certificate of conformity for the basic model.

(5) In the case of dedicated-purpose pool pump motors subject to requirements in subpart Z of part 431 of this subchapter, the certification program must have expertise in the content and application of the test procedures at § 431.484 of this subchapter and must apply the provisions at §§ 429.65 and 429.70(k).

(e) In lieu of testing, represented values of efficiency or consumption may be determined through the application of an AEDM pursuant to the requirements of § 429.70(l) and the provisions of this section.

(1) Any represented value of the SEER2, HSPF2, or other measure of energy efficiency of an individual model/combination for which consumers would favor higher values must be less than or equal to the output of the AEDM but no less than the standard.

(2) The represented value of cooling capacity of an individual model/combination must be no greater than the cooling capacity output simulated by the AEDM.

(3) The represented value of heating capacity of an individual model/combination must be no greater than the heating capacity output simulated by the AEDM.

(A) If DOE has determined that a manufacturer made invalid represented values on individual models/combinations within two or more basic models rated using the manufacturer's AEDM within a 24-month period, the manufacturer must test the least efficient and most efficient individual model/combination within each basic model in addition to the individual model/combination specified in § 429.16(b)(2). The 24-month period begins with a DOE determination that a represented value is invalid through the process outlined in paragraphs (i)(6)(i) through (vi) of this section.

(A) If DOE has determined that a manufacturer made invalid represented values on individual models/combinations within two or more basic models rated using the manufacturer's AEDM within a 24-month period, the manufacturer must test the least efficient and most efficient individual model/combination within each basic model in addition to the individual model/combination specified in § 429.16(b)(2). The 24-month period begins with a DOE determination that a represented value is invalid through the process outlined in paragraphs (i)(6)(i) through (vi) of this section.

(a) A manufacturer must determine the represented values for each basic model, either by testing in conjunction with the applicable sampling provisions or by applying an AEDM as set forth in this section and in § 429.70(n). Manufacturers must update represented values to account for any change in the applicable motor standards in Table 5 of § 431.25 of this chapter and certify amended values as of the next annual certification (as applicable).

(i) If the represented values for a given basic model are determined through testing, a sample of at least one unit must be selected and the requirements of § 429.11 apply.

(ii) If only one unit is tested, at each duty point characterized by a flow and speed value, any represented value of fan electrical power (“FEP”), fan shaft input power, or other measure of energy consumption of a basic model for which consumers would favor lower values shall be greater than or equal to the tested value. Represented values other than FEP must be rounded to the nearest hundredth. FEP must be rounded to three significant figures.

(iii) If only one unit is tested, at each duty point characterized by a flow and speed value, any represented value of fan energy index (“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. Represented values must be rounded to the nearest hundredth.

(iv) If more than one unit is tested, at each duty point characterized by a flow and speed value, any represented value of fan electrical input power (“FEP”), fan shaft input power, or other measure of energy consumption of a basic model for which consumers would favor lower values shall be greater than or equal to the higher of:

(A) The mean of the sample, where

Where is x the sample mean; n is the number of samples, and xi is the i th sample. Or,

(B) The upper 95 percent confidence limit (UCL) of the true mean divided by 1.05, where:

and x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t statistic for a 95 percent one-tailed confidence interval with n-1 degrees of freedom (from appendix A of subpart B of this part). Represented values other than FEP must be rounded to the nearest hundredth. FEP must be rounded to three significant figures.

(v) If more than one unit is tested, 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 shall be less than or equal to the lower of:

(A) The mean of the sample, where

Where x is the sample mean; n is the number of samples, and xi is the i th sample. Or,

(B) The lower 95 percent confidence limit (LCL) of the true mean divided by 0.95, where:

and x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t statistic for a 95 percent one-tailed confidence interval with n-1 degrees of freedom (from appendix A of subpart B of this part). Represented values must be rounded to the nearest hundredth.

(vi) At each duty point characterized by a flow and speed value, the representative value of static or total pressure of a basic model of must be the mean of the tested static or total pressure for each tested unit. If only one unit is tested, the representative value of static or total pressure at the duty point of a basic model is the tested value.

(2) In lieu of testing, the represented values for a basic model must be determined through the application of an AEDM pursuant to the requirements of § 429.70(n) and the provisions of this section, where: the represented values of any basic model used to validate an AEDM must be calculated under paragraph (b)(1) of this section.