Acting Administrator, Agricultural Marketing Service.

2. Section 430.2 is amended by revising the definition for “electric refrigerator-freezer” to read as follows:

§ 430.23 Test procedures for the measurement of energy and water consumption.

(a) Refrigerators and refrigerator-freezers. (1) The estimated annual operating cost for electric refrigerators and electric refrigerator-freezers with variable anti-sweat heater control or without an anti-sweat heater switch shall be the product of the following three factors:

(i) The representative average-use cycle of 365 cycles per year;

(ii) The average per-cycle energy consumption for the standard cycle in kilowatt-hours per cycle, determined according to 6.2 (6.3.6 for externally vented units) of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.2 (6.3.6 for externally vented units) of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(2) The estimated annual operating cost for electric refrigerators and electric refrigerator-freezers with an anti-sweat heater switch and without variable anti-sweat heater control shall be the product of the following three factors:

(i) The representative average-use cycle of 365 cycles per year;

(ii) Half the sum of the average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type with the anti-sweat heater switch in the position set at the factory just before shipping, each in kilowatt-hours per cycle, determined according to 6.2 (6.3.6 for externally vented units) of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.2 (6.3.6 for externally vented units) of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(3) The estimated annual operating cost for any other specified cycle type for electric refrigerators and electric refrigerator-freezers shall be the product of the following three factors: (i) The representative average-use cycle of 365 cycles per year;

(ii) The average per-cycle energy consumption for the specified cycle type, determined according to 6.2 (6.3.6 for externally vented units) of Appendix A1 to this subpart before Appendix A becomes mandatory and 6.2 (6.3.6 for externally vented units) of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(4) The energy factor for electric refrigerators and electric refrigerator-freezers, expressed in cubic feet per kilowatt-hour per cycle, shall be:

(i) For electric refrigerators and electric refrigerator-freezers with variable anti-sweat heater control or without an anti-sweat heater switch, the quotient of:

(A) The adjusted total volume in cubic feet, determined according to 6.1 of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.1 of Appendix A of this subpart after Appendix A becomes mandatory ( see the note at the beginning of Appendix A), divided by—

(B) The average per-cycle energy consumption for the standard cycle in kilowatt-hours per cycle, determined according to 6.2 (6.3.6 for externally vented units) of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.2 (6.3.6 for externally vented units) of Appendix A of this subpart after Appendix A becomes mandatory ( see the note at the beginning of Appendix A), the resulting quotient then being rounded off to the second decimal place; and

(ii) For electric refrigerators and electric refrigerator-freezers having an anti-sweat heater switch and without variable anti-sweat heater control, the quotient of—

(A) The adjusted total volume in cubic feet, determined according to 6.1 of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.1 of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A), divided by—

(B) Half the sum of the average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type with the anti-sweat heater switch in the position set at the factory just before shipping, each in kilowatt-hours per cycle, determined according to 6.2 (6.3.6 for externally vented units) of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.2 (6.3.6 for externally vented units) of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A), the resulting quotient then being rounded off to the second decimal place.

(5) The annual energy use of electric refrigerators and electric refrigerator- freezers, expressed in kilowatt-hours per year, shall be:

(i) For electric refrigerators and electric refrigerator-freezers with variable anti-sweat heater control or without an anti-sweat heater switch, the representative average use cycle of 365 cycles per year multiplied by the average per-cycle energy consumption for the standard cycle in kilowatt-hours per cycle, determined according to 6.2 (6.3.6 for externally vented units) of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.2 (6.3.6 for externally vented units) of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A), and

(ii) For electric refrigerators and electric refrigerator-freezers having an anti-sweat heater switch and without variable anti-sweat heater control, the representative average use cycle of 365 cycles per year times half the sum of the average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type with the anti-sweat heater switch in the position set at the factory just before shipping, each in kilowatt-hours per cycle, determined according to 6.2 (6.3.6 for externally vented units) of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.2 (6.3.6 for externally vented units) of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A).

(6) Other useful measures of energy consumption for electric refrigerators and electric refrigerator-freezers shall be those measures of energy consumption for electric refrigerators and electric refrigerator-freezers that the Secretary determines are likely to assist consumers in making purchasing decisions which are derived from the application of Appendix A1 of this subpart before Appendix A becomes mandatory Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A).

(7) The estimated regional annual operating cost for externally vented electric refrigerators and externally vented electric refrigerator-freezers with variable anti-sweat heater control or without an anti-sweat heater switch shall be the product of the following three factors: (i) The representative average-use cycle of 365 cycles per year,

(ii) The regional average per-cycle energy consumption for the standard cycle in kilowatt-hours per cycle, determined according to 6.3.7 of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.3.7 of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(8) The estimated regional annual operating cost for externally vented electric refrigerators and externally vented electric refrigerator-freezers with an anti-sweat heater switch and without variable anti-sweat heater control shall be the product of the following three factors:

(i) The representative average-use cycle of 365 cycles per year;

(ii) Half the sum of the average per-cycle energy consumption for the standard cycle and the regional average per-cycle energy consumption for a test cycle with the anti-sweat heater switch in the position set at the factory just before shipping, each in kilowatt-hours per cycle, determined according to 6.3.7 of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.3.7 of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(9) The estimated regional annual operating cost for any other specified cycle for externally vented electric refrigerators and externally vented electric refrigerator-freezers shall be the product of the following three factors:

(i) The representative average-use cycle of 365 cycles per year;

(ii) The regional average per-cycle energy consumption for the specified cycle, in kilowatt-hours per cycle, determined according to 6.3.7 of Appendix A1 of this subpart before Appendix A becomes mandatory and 6.3.7 of Appendix A of this subpart after Appendix A becomes mandatory (see the note at the beginning of Appendix A); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(10) The energy test procedure is designed to provide a measurement consistent with representative average consumer use of the product, even if the test conditions and/or procedures may not themselves all be representative of average consumer use ( e.g, 90 °F ambient conditions, no door openings, use of temperature settings unsafe for food preservation, etc.). If a product contains energy consuming components that operate differently during the prescribed testing than they would during representative average consumer use and applying the prescribed test to that product would evaluate it in a manner that is unrepresentative of its true energy consumption (thereby providing materially inaccurate comparative data), the prescribed procedure may not be used. Examples of products that cannot be tested using the prescribed test procedure include those products that can exhibit operating parameters ( e.g, duty cycle or input wattage) for any energy using component that are not smoothly varying functions of operating conditions or control inputs—such as when a component is automatically shut off when test conditions or test settings are reached. A manufacturer wishing to test such a product must obtain a waiver in accordance with the relevant provisions of 10 CFR 430.

(b) Freezers. (1) The estimated annual operating cost for freezers without an anti-sweat heater switch shall be the product of the following three factors:

(i) The representative average-use cycle of 365 cycles per year;

(ii) The average per-cycle energy consumption for the standard cycle in kilowatt-hours per cycle, determined according to 6.2 of Appendix B1 of this subpart before Appendix B becomes mandatory and 6.2 of Appendix B of this subpart after Appendix B becomes mandatory ( see the note at the beginning of Appendix B); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(2) The estimated annual operating cost for freezers with an anti-sweat heater switch shall be the product of the following three factors:

(i) The representative average-use cycle of 365 cycles per year;

(ii) Half the sum of the average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type with the anti-sweat heater switch in the position set at the factory just before shipping, each in kilowatt-hours per cycle, determined according to 6.2 of Appendix B1 of this subpart before Appendix B becomes mandatory and 6.2 of Appendix B of this subpart after Appendix B becomes mandatory (see the note at the beginning of Appendix B); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(3) The estimated annual operating cost for any other specified cycle type for freezers shall be the product of the following three factors:

(i) The representative average-use cycle of 365 cycles per year;

(ii) The average per-cycle energy consumption for the specified cycle type, determined according to 6.2 of Appendix B1 of this subpart before Appendix B becomes mandatory and 6.2 of Appendix B of this subpart after Appendix B becomes mandatory (see the note at the beginning of Appendix B); and

(iii) The representative average unit cost of electricity in dollars per kilowatt-hour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(4) The energy factor for freezers, expressed in cubic feet per kilowatt-hour per cycle, shall be:

(i) For freezers not having an anti-sweat heater switch, the quotient of—

(A) The adjusted net refrigerated volume in cubic feet, determined according to 6.1 of Appendix B1 of this subpart before Appendix B becomes mandatory and 6.1 of Appendix B of this subpart after Appendix B becomes mandatory (see the note at the beginning of Appendix B), divided by—

(B) The average per-cycle energy consumption for the standard cycle in kilowatt-hours per cycle, determined according to or 6.2 of Appendix B1 of this subpart before Appendix B becomes mandatory and 6.2 of Appendix B of this subpart after Appendix B becomes mandatory (see the note at the beginning of Appendix B), the resulting quotient then being rounded off to the second decimal place; and

(ii) For freezers having an anti-sweat heater switch, the quotient of—

(B) Half the sum of the average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type with the anti-sweat heater switch in the position set at the factory just before shipping, each in kilowatt-hours per cycle, determined according to 6.2 of Appendix B1 of this subpart before Appendix B becomes mandatory and 6.2 of Appendix B of this subpart after Appendix B becomes mandatory (see the note at the beginning of Appendix B), the resulting quotient then being rounded off to the second decimal place.

(5) The annual energy use of all freezers, expressed in kilowatt-hours per year, shall be:

(i) For freezers not having an anti-sweat heater switch, the representative average use cycle of 365 cycles per year multiplied by the average per-cycle energy consumption for the standard cycle in kilowatt-hours per cycle, determined according to 6.2 of Appendix B1 of this subpart before Appendix B becomes mandatory and 6.2 of Appendix B of this subpart after Appendix B becomes mandatory (see the note at the beginning of Appendix B), and

(ii) For freezers having an anti-sweat heater switch, the representative average use cycle of 365 cycles per year times half the sum of the average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type with the anti-sweat heater switch in the position set at the factory just before shipping, each in kilowatt-hours per cycle, determined according to 6.2 of Appendix B1 of this subpart before Appendix B becomes mandatory and 6.2 of Appendix B of this subpart after Appendix B becomes mandatory (see the note at the beginning of Appendix B).

(6) Other useful measures of energy consumption for freezers shall be those measures the Secretary determines are likely to assist consumers in making purchasing decisions and are derived from the application of Appendix B1 of this subpart before Appendix B becomes mandatory Appendix B of this subpart after Appendix B becomes mandatory (see the note at the beginning of Appendix B).

(7) The energy test procedure is designed to provide a measurement consistent with representative average consumer use of the product, even if the test conditions and/or procedures may not themselves all be representative of average consumer use ( e.g, 90 °F ambient conditions, no door openings, etc. ). If a product contains energy consuming components that operate differently during the prescribed testing than they would during representative average consumer use and applying the prescribed test to that product would evaluate it in a manner that is unrepresentative of its true energy consumption (thereby providing materially inaccurate comparative data), the prescribed procedure may not be used. Examples of products that cannot be tested using the prescribed test procedure include those products that can exhibit operating parameters ( e.g, duty cycle or input wattage) for any energy using component that are not smoothly varying functions of operating conditions or control inputs—such as when a component is automatically shut off when test conditions or test settings are reached. A manufacturer wishing to test such a product must obtain a waiver in accordance with the relevant provisions of 10 CFR 430.

4. Add a new Appendix A to subpart B of part 430 to read as follows:

Appendix A to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Electric Refrigerators and Electric Refrigerator-Freezers

The provisions of Appendix A shall apply to all products manufactured on or after the effective date of any amended standards promulgated by DOE pursuant to Section 325(b)(4) of the Energy Policy and Conservation Act of 1975, as amended by the Energy Independence and Security Act of 2007 (to be codified at 42 U.S.C. 6295(b)(4)).

1. Definitions

Section 3, Definitions, of HRF-1-2008 (incorporated by reference; see § 430.3) is applicable to this test procedure.

1.1 “Adjusted total volume” means the sum of:

(i) The fresh food compartment volume as defined in HRF-1-2008 (incorporated by reference; see § 430.3) in cubic feet, and

(ii) The product of an adjustment factor and the net freezer compartment volume as defined in HRF-1-2008 in cubic feet.

1.2 “All-refrigerator” means an electric refrigerator that does not include a compartment for the freezing and long time storage of food at temperatures below 32 °F (0.0 °C). It may include a compartment of 0.50 cubic feet capacity (14.2 liters) or less for the freezing and storage of ice.

1.3 “Anti-sweat heater” means a device incorporated into the design of a refrigerator or refrigerator-freezer to prevent the accumulation of moisture on the exterior or interior surfaces of the cabinet.

1.4 “Anti-sweat heater switch” means a user-controllable switch or user interface which modifies the activation or control of anti-sweat heaters.

1.5 “Automatic defrost” means a system in which the defrost cycle is automatically initiated and terminated, with resumption of normal refrigeration at the conclusion of the defrost operation. The system automatically prevents the permanent formation of frost on all refrigerated surfaces. Nominal refrigerated food temperatures are maintained during the operation of the automatic defrost system.

1.6 “Automatic icemaker” means a device, that can be supplied with water without user intervention, either from a pressurized water supply system or by transfer from a water reservoir located inside the cabinet, that automatically produces, harvests, and stores ice in a storage bin, with means to automatically interrupt the harvesting operation when the ice storage bin is filled to a pre-determined level.

1.7 “Cycle” means the period of 24 hours for which the energy use of an electric refrigerator or electric refrigerator-freezer is calculated as though the consumer activated compartment temperature controls were set so that the standardized temperatures (see section 3.2) were maintained.

1.8 “Cycle type” means the set of test conditions having the calculated effect of operating an electric refrigerator or electric refrigerator-freezer for a period of 24 hours, with the consumer activated controls other than those that control compartment temperatures set to establish various operating characteristics.

1.9 “Defrost cycle type” means a distinct sequence of control whose function is to remove frost and/or ice from a refrigerated surface. There may be variations in the sequence of control for defrost such as the number of defrost heaters energized. Each such variation establishes a separate distinct defrost cycle type.

1.10 “Externally vented refrigerator or refrigerator-freezer” means an electric refrigerator or electric refrigerator-freezer that has an enclosed condenser or an enclosed condenser/compressor compartment and a set of air ducts for transferring the exterior air from outside the building envelope into, through, and out of the refrigerator or refrigerator-freezer cabinet; is capable of mixing exterior air with the room air before discharging into, through, and out of the condenser or condenser/compressor compartment; includes thermostatically controlled dampers or controls that enable the mixing of the exterior and room air at low outdoor temperatures, and the exclusion of exterior air when the outdoor air temperature is above 80 °F or the room air temperature; and may have a thermostatically actuated exterior air fan.

1.11 “HRF-1-2008” means the Association of Home Appliance Manufacturers standard Energy, Performance and Capacity of Household Refrigerators, Refrigerator-Freezers and Freezers that was approved September 13, 2008. Only sections of HRF-1-2008 (incorporated by reference; see § 430.3) specifically referenced in this test procedure are part of this test procedure. In cases where there is a conflict, the language of the test procedure in this appendix takes precedence over HRF-1-2008.

1.12 “Long-time automatic defrost” means an automatic defrost system whose successive defrost cycles are separated by 14 hours or more of compressor operating time.

1.13 “Separate auxiliary compartment” means a freezer compartment or a fresh food compartment of a refrigerator or refrigerator-freezer having more than two compartments that is not the first freezer compartment or the first fresh food compartment. Access to a separate auxiliary compartment is through a separate exterior door or doors rather than through the door or doors of another compartment. Separate auxiliary compartments may be convertible ( e.g., from fresh food to freezer).

1.14 “Stabilization period” means the total period of time during which steady-state conditions are being attained or evaluated.

1.15 “Standard cycle” means the cycle type in which the anti-sweat heater control, when provided, is set in the highest energy-consuming position.

1.16 “Variable anti-sweat heater control” means an anti-sweat heater control that varies the average power input of the anti-sweat heater(s) based on operating condition variable(s) and/or ambient condition variable(s).

1.17 “Variable defrost control” means a long-time automatic defrost system (except the 14-hour defrost qualification does not apply) in which successive defrost cycles are determined by an operating condition variable or variables other than compressor operating time. This includes any electrical or mechanical device performing this function. Demand defrost is a type of variable defrost control.

2. Test Conditions

2.1 Ambient Temperature and Humidity. The ambient temperature shall be 90.0 ± 1 °F (32.2 ± 0.6 °C) during the stabilization period and the test period. If the product being tested has variable anti-sweat heater control, the ambient relative humidity shall be no more than 35%. For the variable anti-sweat heater test described in section 4.1.3, the ambient temperature shall be 72 ± 1 °F (22.2 ± 0.6 °C) dry bulb. The relative humidities for the three portions of the test shall be 25 ± 10%, 65 ± 2%, and 95 ± 2%.

2.2 Operational Conditions. The electric refrigerator or electric refrigerator-freezer shall be installed and its operating conditions maintained in accordance with HRF-1-2008, (incorporated by reference; see § 430.3), section 5.3 through section 5.5.5.5 (excluding section 5.5.5.4), except that the vertical ambient temperature gradient at locations 10 inches (25.4 cm) out from the centers of the two sides of the unit being tested is to be maintained during the test. Unless the area is obstructed by shields or baffles, the gradient is to be maintained from 2 inches (5.1 cm) above the floor or supporting platform to a height of 1 foot (30.5 cm) above the unit under test. Defrost controls are to be operative. Other exceptions and clarifications to the cited sections of HRF-1-2008 are noted in sections 2.3 through 2.7, and 5.1 of this test procedure.

2.3 Anti-Sweat Heaters.

(a) User-Controllable Anti-Sweat Heaters. The anti-sweat heater switch is to be on during one test and off during a second test.

(b) Variable Anti-Sweat Heaters. In the case of an electric refrigerator-freezer equipped with variable anti-sweat heater control, the test shall be conducted with the anti-sweat heater controls activated to allow the anti-sweat heater to be energized but operating in their minimum energy state corresponding to operation in low humidity conditions, as a result of testing conducted using an ambient relative humidity level as specified in section 2.1. If the product has an anti-sweat heater switch, it shall be switched on. The variable anti-sweat heater test (described in section 4.1.3) shall be conducted to determine the energy consumption of the anti-sweat heater in higher humidity conditions. The standard cycle energy consumption shall be determined using the equation described in section 6.2.3.

2.4 Conditions for Automatic Defrost Refrigerator-Freezers. For automatic defrost refrigerator-freezers, the freezer compartments shall not be loaded with any frozen food packages during testing. Cylindrical metallic masses of dimensions 1.12 ± 0.25 inches (2.9 ± 0.6 cm) in diameter and height shall be attached in good thermal contact with each temperature sensor within the refrigerated compartments. All temperature measuring sensor masses shall be supported by low-thermal-conductivity supports in such a manner to ensure that there will be at least 1 inch (2.5 cm) of air space separating the thermal mass from contact with any interior surface or hardware inside the cabinet. In case of interference with hardware at the sensor locations specified in section 5.1, the sensors shall be placed at the nearest adjacent location such that there will be a 1-inch air space separating the sensor mass from the hardware.

2.5 Conditions for All-Refrigerators. There shall be no load in the freezer compartment during the test.

2.6 The cabinet and its refrigerating mechanism shall be assembled and set up in accordance with the printed consumer instructions supplied with the cabinet. Set-up of the refrigerator or refrigerator-freezer shall not deviate from these instructions, unless explicitly required or allowed by this test procedure. Specific required or allowed deviations from such set-up include the following:

(a) Connection of water lines and installation of water filters are not required;

(b) Clearance requirements from surfaces of the product shall be as described in section 2.8 below;

(c) The electric power supply shall be as described in HRF-1-2008 (incorporated by reference; see § 430.3), section 5.5.1;

(d) Temperature control settings for testing shall be as described in section 3 below. Settings for convertible compartments and other temperature-controllable or special compartments shall be as described in section 2.7 below; and

(e) The product does not need to be anchored or otherwise secured to prevent tipping during energy testing.

For cases in which set-up is not clearly defined by this test procedure, manufacturers must submit a petition for a waiver (see section 7).

2.7 Compartments that are convertible ( e.g,, from fresh food to freezer) shall be operated in the highest energy use position. For the special case of convertible separate auxiliary compartments, this means that the compartment shall be treated as a freezer compartment or a fresh food compartment, depending on which of these represents higher energy use. Other compartments with separate temperature control (such as crispers convertible to meat keepers), with the exception of butter conditioners, shall also be tested with controls set in the highest energy use position.

2.8 The space between the back of the cabinet and the test room wall or simulated wall shall be the minimum distance in accordance with the manufacturer's instructions. If the instructions do not specify a minimum distance, the cabinet shall be located such that the rear of the cabinet touches the test room wall or simulated wall. The test room wall facing the rear of the cabinet or the simulated wall shall be flat within 1/4 inch, and vertical to within 1 degree. The cabinet shall be leveled to within 1 degree of true level, and positioned with its rear wall parallel to the test chamber wall or simulated wall immediately behind the cabinet. Any simulated wall shall be solid and shall extend vertically from the floor to above the height of the cabinet and horizontally beyond both sides of the cabinet.

2.9 Steady-State Condition. Steady-state conditions exist if the temperature measurements in all measured compartments taken at 4-minute intervals or less during a stabilization period are not changing at a rate greater than 0.042 °F (0.023 °C) per hour as determined by the applicable condition of A or B, described below.

A. The average of the measurements during a 2-hour period if no cycling occurs or during a number of complete repetitive compressor cycles occurring through a period of no less than 2 hours is compared to the average over an equivalent time period with 3 hours elapsing between the two measurement periods.

B. If A above cannot be used, the average of the measurements during a number of complete repetitive compressor cycles occurring through a period of no less than 2 hours and including the last complete cycle before a defrost period (or if no cycling occurs, the average of the measurements during the last 2 hours before a defrost period) are compared to the same averaging period before the following defrost period.

2.10 Exterior Air for Externally Vented Refrigerator or Refrigerator-Freezer. An exterior air source shall be provided with adjustable temperature and pressure capabilities. The exterior air temperature shall be adjustable from 30 ± 1 °F (1.7 ± 0.6 °C) to 90 ± 1 °F (32.2 ± 0.6 °C).

2.10.1 Air Duct. The exterior air shall pass from the exterior air source to the test unit through an insulated air duct.

2.10.2 Air Temperature Measurement. The air temperature entering the condenser or condenser/compressor compartment shall be maintained to ± 3 °F (1.7 °C) during the stabilization and test periods and shall be measured at the inlet point of the condenser or condenser/compressor compartment (“condenser inlet”). Temperature measurements shall be taken from at least three temperature sensors or one sensor per 4 square inches of the air duct cross-sectional area, whichever is greater, and shall be averaged. For a unit that has a condenser air fan, a minimum of three temperature sensors at the condenser fan discharge shall be required. Temperature sensors shall be arranged to be at the centers of equally divided cross-sectional areas. The exterior air temperature, at its source, shall be measured and maintained to ± 1 °F (0.6 °C) during the test period. The temperature measuring devices shall have an error no greater than ± 0.5 °F (± 0.3 °C). Measurements of the air temperature during the test period shall be taken at regular intervals not to exceed 4 minutes.

2.10.3 Exterior Air Static Pressure. The exterior air static pressure at the inlet point of the unit shall be adjusted to maintain a negative pressure of 0.20″ ± 0.05″ water column (62 Pascals ± 12.5 Pascals) for all air flow rates supplied to the unit. The pressure sensor shall be located on a straight duct with a distance of at least 7.5 times the diameter of the duct upstream and a distance of at least 3 times the diameter of the duct downstream. There shall be four static pressure taps at 90° angles apart. The four pressures shall be averaged by interconnecting the four pressure taps. The air pressure measuring instrument shall have an error no greater than 0.01″ water column (2.5 Pascals).

3. Test Control Settings

3.1 Model with no User Operable Temperature Control. A test shall be performed to measure the compartment temperatures and energy use. A second test shall be performed with the temperature control electrically short circuited to cause the compressor to run continuously.

3.2 Models with User Operable Temperature Control. Testing shall be performed in accordance with one of the following sections using the following standardized temperatures:

All-Refrigerator: 39 °F (3.9 °C) fresh food compartment temperature; Refrigerator: 15 °F (−9.4 °C) freezer compartment temperature, 39 °F (3.9 °C) fresh food compartment temperature; Refrigerator-Freezer: 0 °F (−17.8 °C) freezer compartment temperature, 39 °F (3.9 °C) fresh food compartment temperature; and Variable Anti-Sweat Heater Model (Temperatures for variable anti-sweat heater test of section 4.1.3): 0 °F (−17.8 °C) freezer compartment temperature and 39 ± 2 °F (3.9 ± 1.1 °C) fresh food compartment temperature during steady-state conditions with no door-openings. If both settings cannot be obtained, then test with the fresh food compartment temperature at 39 ± 2 °F (3.9 ± 1.1 °C) and the freezer compartment as close to 0 °F (−17.8 °C) as possible. For the purposes of comparing compartment temperatures with standardized temperatures, as described in sections 3.2.1 through 3.2.3, the freezer compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable freezer compartments, and the fresh food compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable fresh food compartments. Applicable compartments for these calculations may include a first freezer compartment, a first fresh food compartment, and any number of separate auxiliary compartments.

3.2.1 A first test shall be performed with all compartment temperature controls set at their median position midway between their warmest and coldest settings. For mechanical control systems, knob detents shall be mechanically defeated if necessary to attain a median setting. For electronic control systems, the test shall be performed with all compartment temperature controls set at the average of the coldest and warmest settings—if there is no setting equal to this average, the setting closest to the average shall be used. If there are two such settings equally close to the average, the higher of these temperature control settings shall be used. A second test shall be performed with all controls set at their warmest setting or all controls set at their coldest setting (not electrically or mechanically bypassed). For all-refrigerators, this setting shall be the appropriate setting that attempts to achieve compartment temperatures measured during the two tests which bound ( i.e., one is above and one is below) the standardized temperature for all-refrigerators. For refrigerators and refrigerator-freezers, the second test shall be conducted with all controls at their coldest setting, unless all compartment temperatures measured during the first part of the test are lower than the standardized temperatures, in which case the second test shall be conducted with all controls at their warmest setting. Refer to Table 1 for all-refrigerators or Table 2 for refrigerators with freezer compartments and refrigerator-freezers to determine if a third test is required, and which test results to use in the energy consumption calculation.

Table 1—Temperature Settings for All—Refrigerators First test Settings Results Second test Settings Results Third test settings Energy calculation based on: Mid Low Warm Low None Second Test Only. High None First and Second Tests. High Cold Low None First and Second Tests. High Warm Second and Third Tests. Table 2—Temperature Settings for Refrigerators With Freezer Compartments and Refrigerator-Freezers First test Settings Results Second test Settings Results Third test settings Energy calculation based on: Fzr Mid Fzr Low Fzr Warm Fzr Low None Second Test Only. FF Mid FF Low FF Warm FF Low Fzr Low None First and Second Tests. FF High Fzr High None First and Second Tests. FF Low Fzr High None First and Second Tests. FF High Fzr Low Fzr Cold Fzr Low Fzr Warm Second and Third Tests. FF High FF Cold FF High FF Warm Fzr Low None First and Second Tests. FF Low Fzr High Fzr Cold Fzr High Fzr Warm Second and Third Tests. FF Low FF Cold FF Low FF Warm Fzr Low None First and Second Tests. FF Low Fzr High Fzr Cold Fzr Low None First and Second Tests. FF High FF Cold FF Low Fzr Low None First and Second Tests. FF High Fzr High Fzr Warm Second and Third Tests. FF Low FF Warm Fzr High Fzr Warm Second and Third Tests. FF High FF Warm Notes: Fzr = Freezer Compartment, FF = Fresh Food Compartment.

3.2.2 Alternatively, a first test may be performed with all temperature controls set at their warmest setting. If all compartment temperatures are below the appropriate standardized temperatures, then the result of this test alone will be used to determine energy consumption. If the above conditions are not met, then the unit shall be tested in accordance with 3.2.1.

3.2.3 Alternatively, a first test may be performed with all temperature controls set at their coldest setting. If (1) for all-refrigerators the compartment temperature is above the appropriate standardized temperature, or (2) for refrigerators and refrigerator-freezers the freezer compartment temperature is above the appropriate standardized temperature, a second test shall be performed with all controls set at their warmest control setting and the results of these two tests shall be used to determine energy consumption. If the above condition is not met, then the unit shall be tested in accordance with 3.2.1.

4. Test Period

4.1 Test Period. Tests shall be performed by establishing the conditions set forth in section 2, and using control settings set forth in section 3.

4.1.1 Nonautomatic Defrost. If the model being tested has no automatic defrost system, the test time period shall start after steady-state conditions have been achieved and be no less than 3 hours in duration. During the test period, the compressor motor shall complete two or more whole compressor cycles. (A compressor cycle is a complete “on” and a complete “off” period of the motor). If no “off” cycling will occur, as determined during the stabilization period, the test period shall be 3 hours. If incomplete cycling occurs ( i.e. less than two compressor cycles during a 24-hour period), the results of the 24-hour period shall be used.

4.1.2 Automatic Defrost. If the model being tested has an automatic defrost system, the test time period shall start after steady-state conditions have been achieved and be from one point during a defrost period to the same point during the next defrost period. If the model being tested has a long-time automatic defrost system, the alternative provisions of 4.1.2.1 may be used. If the model being tested has a variable defrost control, the provisions of section 4.1.2.2 shall apply. If the model has a dual compressor system with automatic defrost for both systems, the provisions of 4.1.2.3 shall apply. If the model being tested has long-time automatic or variable defrost control involving multiple defrost cycle types, such as for a system with a single compressor with two or more evaporators in which the evaporators are defrosted at different frequencies, the provisions of section 4.1.2.4 shall apply. If the model being tested has multiple defrost cycle types for which compressor run time between defrosts is a fixed time less than 14 hours for all such cycle types, and for which the compressor run time between defrosts for different defrost cycle types are equal to or multiples of each other, the test time period shall be from one point of the defrost cycle type with the longest compressor run time between defrosts to the same point during the next occurrence of this defrost cycle type. For such products, energy consumption shall be calculated as described in section 5.2.1.1.

4.1.2.1 Long-time Automatic Defrost. If the model being tested has a long-time automatic defrost system, the two-part test described in this section may be used. The first part is the same as the test for a unit having no defrost provisions (section 4.1.1). The second part starts when the compressor turns off at the end of a period of steady-state cycling operation just before initiation of the defrost control sequence. If the compressor does not cycle during steady-state operation between defrosts, the second part starts at a time when the compartment temperatures are within their ranges measured during steady state operation, or within 0.5 °F of the average during steady state operation for a compartment with a temperature range during steady state operation no greater than 1 °F. This control sequence may include additional compressor operation prior to energizing the defrost heater. The second part terminates when the compressor turns on the second time after the defrost control sequence or 4 hours after the defrost heater is energized, whichever occurs first. See Figure 1.

BILLING CODE 6450-01-P EP27MY10.000 EP27MY10.001 BILLING CODE 6450-01-C

4.1.2.2 Variable Defrost Control. If the model being tested has a variable defrost control system, the test shall consist of the same two parts as the test for long-time automatic defrost (section 4.1.2.1).

4.1.2.3 Dual Compressor Systems with Automatic Defrost. If the model being tested has separate compressor systems for the refrigerator and freezer sections, each with its own automatic defrost system, then the two-part method in 4.1.2.1 shall be used. The second part of the method will be conducted separately for each automatic defrost system. The components (compressor, fan motors, defrost heaters, anti-sweat heaters, etc.) associated with each system will be identified and their energy consumption will be separately measured during each test.

4.1.2.4 Systems with Multiple Defrost Frequencies. This section is applicable to models with long-time automatic or variable defrost control with multiple defrost cycle types, such as models with single compressors and multiple evaporators in which the evaporators have different defrost frequencies. The two-part method in 4.1.2.1 shall be used. The second part of the method will be conducted separately for each distinct defrost cycle type.

4.1.3 Variable Anti-Sweat Heater Test. The test shall be conducted three times with the test conditions at three different relative humidities as set forth in section 2 and the test control settings as set forth in section 3. For a product with an anti-sweat heater switch, the tests shall be conducted with the switch in the on position. Each of the three portions of the test shall be conducted in the same manner as for a unit having no automatic defrost (section 4.1.1). If during the time between one of the portions of the test and the next portion the ambient temperature conditions are maintained, the procedure for evaluating steady state (section 2.9) is not required for the second of these two portions of the test. However, in such a case, a control stabilization period of two hours is required after the ambient humidity conditions have reached the required range before start of the test.

5. Test Measurements

5.1 Temperature Measurements. Temperature measurements shall be made at the locations prescribed in Figures 5.1 and 5.2 of HRF-1-2008 (incorporated by reference; see § 430.3) and shall be accurate to within ± 0.5 °F (0.3 °C). No freezer temperature measurements need be taken in an all-refrigerator model.

If the interior arrangements of the cabinet do not conform with those shown in Figure 7.1 and 7.2 of HRF-1-1979, the product may be tested by relocating the temperature sensors from the locations specified in the Figures by no more than 2 inches to avoid interference with hardware or components within the cabinet, in which case the specific locations used for the temperature sensors shall be noted in the test data records maintained by the manufacturer in accordance with 10 CFR 430.62(d). For those products equipped with a cabinet that does not conform with Figures 7.1 or 7.2 and cannot be tested in the manner described above, the manufacturer must obtain a waiver under 10 CFR 430.27 to establish an acceptable test procedure for each such product.

5.1.1 Measured Temperature. The measured temperature of a compartment is to be the average of all sensor temperature readings taken in that compartment at a particular point in time. Measurements shall be taken at regular intervals not to exceed 4 minutes.

5.1.2 Compartment Temperature. The compartment temperature for each test period shall be an average of the measured temperatures taken in a compartment during one or more complete compressor cycles. One compressor cycle is one complete motor “on” and one complete motor “off” period. For long-time automatic defrost models, compartment temperatures shall be those measured in the first part of the test period specified in section 4.1.2.1. For models equipped with variable defrost controls, compartment temperatures shall be those measured in the first part of the test period specified in section 4.1.2.2.

5.1.2.1 The number of complete compressor cycles over which the measured temperatures in a compartment are to be averaged to determine compartment temperature shall be equal to the number of minutes between measured temperature readings, rounded up to the next whole minute or a number of complete compressor cycles over a time period exceeding 1 hour, whichever is greater. One of the compressor cycles shall be the last complete compressor cycle during the test period.

5.1.2.2 If no compressor cycling occurs, the compartment temperature shall be the average of the measured temperatures taken during the last 32 minutes of the test period.

5.1.2.3 If incomplete compressor cycling occurs, the compartment temperatures shall be the average of the measured temperatures taken during the last three hours of the last complete compressor “on” period.

5.2 Energy Measurements.

5.2.1 Per-Day Energy Consumption. The energy consumption in kilowatt-hours per day, ET, for each test period shall be the energy expended during the test period as specified in section 4.1 adjusted to a 24-hour period. The adjustment shall be determined as follows.

5.2.1.1 Nonautomatic and Automatic Defrost Models. The energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = EP × 1440/T Where: ET = test cycle energy expended in kilowatt-hours per day; EP = energy expended in kilowatt-hours during the test period; T = length of time of the test period in minutes; and 1440 = conversion factor to adjust to a 24-hour period in minutes per day.

5.2.1.2 Long-time Automatic Defrost. If the two-part test method is used, the energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = (1440 × EP1/T1) + (EP2 − (EP1 × T2/T1)) × (12/CT) Where: ET and 1440 are defined in 5.2.1.1; EP1 = energy expended in kilowatt-hours during the first part of the test; EP2 = energy expended in kilowatt-hours during the second part of the test; T1 and T2 = length of time in minutes of the first and second test parts respectively; CT = defrost timer run time in hours required to cause it to go through a complete cycle, to the nearest tenth hour per cycle; and 12 = factor to adjust for a 50 percent run time of the compressor in hours per day.

5.2.1.3 Variable Defrost Control. The energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = (1440 × EP1/T1) + (EP2 − (EP1 × T2/T1)) × (12/CT), Where: 1440 is defined in 5.2.1.1 and EP1, EP2, T1, T2, and 12 are defined in 5.2.1.2; CT = (CT L × CT M )/(F × (CT M − CT L ) + CT L ); CT L = least or shortest time between defrosts in hours rounded to the nearest tenth of an hour (greater than or equal to 6 but less than or equal to 12 hours); CT M = maximum time between defrost cycles in hours rounded to the nearest tenth of an hour (greater than CT L but not more than 96 hours); F = ratio of per day energy consumption in excess of the least energy and the maximum difference in per-day energy consumption and is equal to 0.20; and For variable defrost models with no values for CT L and CT M in the algorithm, the default values of 12 and 84 shall be used, respectively.

5.2.1.4 Dual Compressor Systems with Dual Automatic Defrost. The two-part test method in section 4.1.2.4 must be used, and the energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = (1440 × EP1/T1) + (EP2 F − (EP F × T2/T1)) × (12/CT F ) + (EP2 R − (EP R × T3/T1)) × (12/CT R ) Where: 1440, EP1, T1, EP2, 12, and CT are defined in 5.2.1.2; EP F = freezer system energy in kilowatt-hours expended during the first part of the test; EP2 F = freezer system energy in kilowatt-hours expended during the second part of the test for the freezer system; EP R = refrigerator system energy in kilowatt-hours expended during the first part of the test; EP2 R = refrigerator system energy in kilowatt-hours expended during the second part of the test for the refrigerator system; T2 and T3 = length of time in minutes of the second test part for the freezer and refrigerator systems respectively; CT F = compressor “on” time between freezer defrosts (in hours to the nearest tenth of an hour); and CT R = compressor “on” time between refrigerator defrosts (in hours to the nearest tenth of an hour).

5.2.1.5 Variable Anti-Sweat Heater Test. The energy consumption in kilowatt-hours per day for each of the portions of the test shall be calculated equivalent to:

ET XX = EP XX × 1440/T XX Where: 1440 is defined in 5.2.1.1; subscript XX = 25, 65, and 95, representing the three relative humidities for which the test is conducted; ET XX = test cycle energy expended in kilowatt-hours per day; EP XX = energy expended during the test period in kilowatt-hours; and T XX = length of time of the test period in minutes.

5.2.1.6 Long-time or Variable Defrost Control for Systems with Multiple Defrost cycle Types. The energy consumption in kilowatt-hours per day shall be calculated equivalent to:

EP27MY10.004 Where: 1440 is defined in 5.2.1.1 and EP1, T1, and 12 are defined in 5.2.1.2; i is a variable that can equal 1, 2, or more that identifies the distinct defrost cycle types applicable for the refrigerator or refrigerator-freezer; EP2 i = energy expended in kilowatt-hours during the second part of the test for defrost cycle type i; T2 i = length of time in minutes of the second part of the test for defrost cycle type i; CT i is the compressor run time between instances of defrost cycle type i, for long time automatic defrost control equal to a fixed time, and for variable defrost control equal to (CT Li × CT Mi )/(F × (CT Mi − CT Li ) + CT Li ); CT Li = least or shortest time between instances of defrost cycle type i in hours rounded to the nearest tenth of an hour (greater than or equal to 6 but less than or equal to 12 hours); CT Mi = maximum time between instances of defrost cycle type i in hours rounded to the nearest tenth of an hour (greater than CT Li but not more than 96 hours); F = default defrost energy consumption factor, equal to 0.20. For variable defrost models with no values for CT Li and CT Mi in the algorithm, the default values of 12 and 84 shall be used, respectively. D is the total number of distinct defrost cycle types.

5.3 Volume Measurements. The electric refrigerator or electric refrigerator-freezer total refrigerated volume, VT, shall be measured in accordance with HRF-1-2008, (incorporated by reference; see § 430.3), section 3.30 and sections 4.2 through 4.3, and be calculated equivalent to:

VT = VF + VFF Where: VT = total refrigerated volume in cubic feet, VF = freezer compartment volume in cubic feet, and VFF = fresh food compartment volume in cubic feet. In the case of refrigerators or refrigerator-freezers with automatic icemakers, the volume occupied by the automatic icemaker, including its ice storage bin, is to be included in the volume measurement.

5.4 Externally Vented Refrigerator or Refrigerator-Freezer Units. All test measurements for the externally vented refrigerator or refrigerator-freezer shall be made in accordance with the requirements of other sections of this Appendix, except as modified in this section or other sections expressly applicable to externally vented refrigerators or refrigerator-freezers.

5.4.1 Operability of “Thermostatic” and “Mixing of Air” Controls. Before conducting energy consumption tests, the operability of thermostatic controls that permit the mixing of exterior and ambient air when exterior air temperatures are less than 60 °F (15.6 °C) must be verified. The operability of such controls shall be verified by operating the unit under ambient air temperature of 90 °F (32.2 °C) and exterior air temperature of 45 °F (7.2 °C). If the inlet air entering the condenser or condenser/compressor compartment is maintained at 60 ± 3 °F (15.6 ± 1.7 °C), energy consumption of the unit shall be measured under 5.4.2.2 and 5.4.2.3. If the inlet air entering the condenser or condenser/compressor compartment is not maintained at 60 ± 3 °F (15.6 ± 1.7 °C), energy consumption of the unit shall also be measured under 5.4.2.4.

5.4.2 Energy Consumption Tests.

5.4.2.1 Correction Factor Test. To enable calculation of a correction factor, K, two full cycle tests shall be conducted to measure energy consumption of the unit with air mixing controls disabled and the condenser inlet air temperatures set at 90 °F (32.2 °C) and 80 °F (26.7 °C). Both tests shall be conducted with all compartment temperature controls set at the position midway between their warmest and coldest settings and the anti-sweat heater switch off. Record the energy consumptions ec 90 and ec 80 , in kWh/day.

5.4.2.2 Energy Consumption at 90 °F. The unit shall be tested at 90 °F (32.2 °C) exterior air temperature to record the energy consumptions (e 90 ) i in kWh/day. For a given setting of the anti-sweat heater, the value i corresponds to each of the two states of the compartment temperature control positions.

5.4.2.3 Energy Consumption at 60 °F. The unit shall be tested at 60 °F (26.7 °C) exterior air temperature to record the energy consumptions (e 60 ) i in kWh/day. For a given setting of the anti-sweat heater, the value i corresponds to each of the two states of the compartment temperature control positions.

5.4.2.4 Energy Consumption if Mixing Controls do not Operate Properly. If the operability of temperature and mixing controls has not been verified as required under 5.4.1, the unit shall be tested at 50 °F (10.0 °C) and 30 °F (−1.1 °C) exterior air temperatures to record the energy consumptions (e 50 ) i and (e 30 ) i . For a given setting of the anti-sweat heater, the value i corresponds to each of the two states of the compartment temperature control positions.

6. Calculation of Derived Results From Test Measurements

6.1 Adjusted Total Volume.

6.1.1 Electric Refrigerators. The adjusted total volume, VA, for electric refrigerators under test shall be defined as:

VA = (VF × CR) + VFF Where: VA = adjusted total volume in cubic feet; VF and VFF are defined in 5.3; and CR = dimensionless adjustment factor of 1.47 for refrigerators other than all-refrigerators, or 1.0 for all-refrigerators.

6.1.2 Electric Refrigerator-Freezers. The adjusted total volume, VA, for electric refrigerator-freezers under test shall be calculated as follows:

VA = (VF × CRF) + VFF Where:

VF and VFF are defined in 5.3 and VA is defined in 6.1.1, and

CRF = dimensionless adjustment factor of 1.76.

6.2 Average Per-Cycle Energy Consumption. For the purposes of calculating per-cycle energy consumption, as described in this section, freezer compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable freezer compartments, and fresh food compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable fresh food compartments. Applicable compartments for these calculations may include a first freezer compartment, a first fresh food compartment, and any number of separate auxiliary compartments.

6.2.1 All-Refrigerator Models. The average per-cycle energy consumption for a cycle type, E, is expressed in kilowatt-hours per cycle to the nearest one hundredth (0.01) kilowatt-hour and shall depend upon the temperature attainable in the fresh food compartment as shown below.

6.2.1.1 If the fresh food compartment temperature is always below 39.0 °F (3.9 °C), the average per-cycle energy consumption shall be equivalent to:

E = ET1

Where: ET is defined in 5.2.1; and number 1 indicates the test period during which the highest fresh food compartment temperature is measured.

6.2.1.2 If one of the fresh food compartment temperatures measured for a test period is greater than 39.0 °F (3.9 °C), the average per-cycle energy consumption shall be equivalent to:

E = ET1 + ((ET2 − ET1) × (39.0 − TR1)/(TR2 − TR1)) Where: ET is defined in 5.2.1; TR = fresh food compartment temperature determined according to 5.1.2 in degrees F; numbers 1 and 2 indicate measurements taken during the first and second test period as appropriate; and 39.0 = standardized fresh food compartment temperature in degrees F.

6.2.2 Refrigerators and Refrigerator-Freezers. The average per-cycle energy consumption for a cycle type, E, is expressed in kilowatt-hours per-cycle to the nearest one hundredth (0.01) kilowatt-hour and shall be defined in one of the following ways as applicable.

6.2.2.1 If the fresh food compartment temperature is at or below 39 °F (3.9 °C) in both tests and the freezer compartment temperature is at or below 15 °F (−9.4 °C) in both tests of a refrigerator or at or below 0 °F (−17.8 °C) in both tests of a refrigerator-freezer, the per-cycle energy consumption shall be:

E = ET1 + IET Where: ET is defined in 5.2.1; IET, expressed in kilowatt-hours per cycle, equals 0.23 for a product with an automatic icemaker and otherwise equals 0 (zero); and number 1 indicates the test period during which the highest freezer compartment temperature was measured.

6.2.2.2 If the conditions of 6.2.2.1 do not exist, the per-cycle energy consumption shall be defined by the higher of the two values calculated by the following two formulas:

E = ET1 + ((ET2 − ET1) × (39.0 − TR1)/(TR2 − TR1)) + IET and E = ET1 + ((ET2 − ET1) × (k − TF1)/(TF2 − TF1)) + IET Where: E is defined in 6.2.1.1; ET is defined in 5.2.1; IET is defined in 6.2.2.1; TR and the numbers 1 and 2 are defined in 6.2.1.2; TF = freezer compartment temperature determined according to 5.1.2 in degrees F; 39.0 is a specified fresh food compartment temperature in degrees F; and k is a constant 15.0 for refrigerators or 0.0 for refrigerator-freezers, each being standardized freezer compartment temperatures in degrees F.

6.2.3 Variable Anti-Sweat Heater Models. The energy consumption of an electric refrigerator-freezer having a variable anti-sweat heater control, E VASH , expressed in kilowatt-hours per day, shall be calculated equivalent to:

E VASH = E + (Correction Factor), where E is determined by 6.2.1.1, 6.2.1.2, 6.2.2.1, or 6.2.2.2, whichever is appropriate, with the anti-sweat heater in its minimum energy state corresponding to low ambient humidity during the test. Where: Correction Factor = 0.034 * (Energy Difference at 5% Relative Humidity (RH)), + 0.211 * (Energy Difference at 15% RH) + 0.204 * (Energy Difference at 25% RH) + 0.166 * (Energy Difference at 35% RH) + 0.126 * (Energy Difference at 45% RH) + 0.119 * (Energy Difference at 55% RH) + 0.069 * (Energy Difference at 65% RH) + 0.047 * (Energy Difference at 75% RH) + 0.008 * (Energy Difference at 85% RH) + 0.015 * (Energy Difference at 95% RH) Where: Energy Difference at 65% RH = ED 65 − ET 65 −ET 25 ; Energy Difference at 95% RH = ED 95 − ET 95 −ET 25 ; ET 25 , ET 65 , and ET 95 are determined in accordance with section 5.2.1.6; and Energy Difference ED RH at each other relative humidity RH is the greater of zero or the following: ED RH = ED 65 + (ED 95 −ED 65 ) × (DP RH −DP 65 )/(DP 95 −DP 65 ), Where the dew points DP RH at each of the relative humidities RH in the equation are as follows: DP 5 = 5.06; DP 15 = 27.53; DP 25 = 38.75; DP 35 = 46.43; DP 45 = 52.32; DP 55 = 57.13; DP 65 = 61.20; DP 75 = 64.74; DP 85 = 67.87; DP 95 = 70.69.

6.3 Externally vented refrigerator or refrigerator-freezers. Per-cycle energy consumption measurements for an externally vented refrigerator or refrigerator-freezer shall be calculated in accordance with the requirements of this Appendix, as modified in sections 6.3.1-6.3.7.

6.3.1 Correction Factor. The correction factor, K, shall be calculated as:

K = ec 90 /ec 80 Where: ec 90 and ec 80 are measured in section 5.4.2.1.

6.3.2 Combining Test Results of Different Settings of Compartment Temperature Controls. For a given setting of the anti-sweat heater, follow the calculation procedures of 6.2 to combine the test results for energy consumption of the unit at different temperature control settings for each condenser inlet air temperature tested under 5.4.2.2, 5.4.2.3, and 5.4.2.4, where applicable, (e 90 ) i , (e 60 ) i , (e 50 ) i , and (e 30 ) i . The combined values, ε 90 , ε 60 , ε 50 , and ε 30 , where applicable, are expressed in kWh/day.

6.3.3 Energy Consumption Corrections. For a given setting of the anti-sweat heater, adjust the energy consumptions ε 90 , ε 60 , ε 50 , and ε 30 calculated in 6.3.2 by multiplying the correction factor K to obtain the corrected energy consumptions per day in kWh/day:

E 90 = K × ε 90, E 60 = K × ε 60, E 50 = K × ε 50 , and E 30 = K × ε 30 Where: K is determined under section 6.3.1; and ε 90 , ε 60 , ε 50 , and ε 30 are determined under section 6.3.2.

6.3.4 Energy Profile Equation. For a given setting of the anti-sweat heater, calculate the energy consumption E X , in kWh/day, at a specific exterior air temperature between 80 °F (26.7 °C) and 60 °F (15.6 °C) using the following equation:

E X = E 60 + (E 90 − E 60 ) × (T X − 60)/30 Where: T X is the exterior air temperature in °F; 60 is the exterior air temperature for the test of section 6.4.2.3; 30 is the difference between 90 and 60; E 60 and E 90 are determined in section 6.3.3.

6.3.5 Energy Consumption at 80 °F (26.7 °C), 75 °F (23.9 °C) and 65 °F (18.3 °C). For a given setting of the anti-sweat heater, calculate the energy consumptions at 80 °F (26.7 °C), 75 °F (23.9 °C) and 65 °F (18.3 °C) exterior air temperatures, E 80 , E 75 and E 65 , respectively, in kWh/day, using the equation in 6.3.4.

6.3.6 National Average Per-Cycle Energy Consumption. For a given setting of the anti-sweat heater, calculate the national average energy consumption, E N , in kWh/day, using one of the following equations:

E N = 0.523 × E 60 + 0.165 × E 65 + 0.181 × E 75 + 0.131 × E 80 , for units not tested under section 5.4.2.4; and E N = 0.257 × E 30 + 0.266 × E 50 + 0.165 × E 65 + 0.181 × E 75 + 0.131 × E 80 , for units tested under section 5.4.2.4 Where: E 30 , E 50 , and E 60 are defined in 6.3.3; E 65 , E 75 , and E 80 are defined in 6.3.5; and the coefficients 0.523, 0.165, 0.181, 0.131, 0.257 and 0.266 are weather-associated weighting factors.

6.3.7 Regional Average Per-Cycle Energy Consumption. If regional average per-cycle energy consumption is required to be calculated for a given setting of the anti-sweat heater, calculate the regional average per-cycle energy consumption, E R , in kWh/day, for the regions in Figure 2. Use one of the following equations and the coefficients in Table A:

E R = a 1 × E 60 + c × E 65 + d × E 75 + e × E 80 , for a unit that is not required to be tested under section 5.4.2.4; or E R = a × E 30 + b × E 50 + c × E 65 + d × E 75 + e × E 80 , for a unit tested under section 5.4.2.4 Where: E 30 , E 50 , and E 60 are defined in section 6.3.3; E 65 , E 75 , and E 80 are defined in section 6.3.5; and a 1 , a, b, c, d, and e are weather-associated weighting factors for the regions, as specified in Table A. Table A—Coefficients for Calculating Regional Average per-Cycle Energy Consumption [Weighting factors] Regions a1 a b c d e I 0.282 0.039 0.244 0.194 0.326 0.198 II 0.486 0.194 0.293 0.191 0.193 0.129 III 0.584 0.302 0.282 0.178 0.159 0.079 IV 0.664 0.420 0.244 0.161 0.121 0.055 EP27my10.006 7. Test Procedure Waivers

To the extent that the procedures contained in this appendix do not provide a means for determining the energy consumption of a refrigerator or refrigerator-freezer, a manufacturer must obtain a waiver under 10 CFR 430.27 to establish an acceptable test procedure for each such product. Such instances could, for example, include situations where the test set-up for a particular refrigerator or refrigerator-freezer basic model is not clearly defined by the provisions of section 2. For details regarding the criteria and procedures for obtaining a waiver, please refer to 10 CFR 430.27.

6. Appendix A1 to subpart B of part 430 is amended by:

a. Adding an introductory note after the appendix heading;

b. Revising section 1. Definitions;

c. In section 2. Test Conditions, by:

1. Redesignating sections 2.3, 2.4, 2.5, 2.6, 2.6.1, 2.6.2 and 2.6.3 as 2.4, 2.5, 2.9, 2.10, 2.10.1, 2.10.2 and 2.10.3;

2. Revising sections 2.1, 2.2 and redesignated section 2.4;

3. Adding new sections 2.3, and 2.6 through 2.8;

d. In section 3. Test Control Settings, by:

1. Revising sections 3.2 and 3.2.1;

2. Removing section 3.3;

e. In section 4. Test Period, by:

1. Revising sections 4.1.1, 4.1.2, 4.1.2.1, and 4.1.2.2;

2. Removing section 4.1.2.3;

3. Redesignating section 4.1.2.4 as 4.1.2.3 and revising redesignated 4.1.2.3;

2. Revising Figure 1 to section 4;

3. Adding new sections 4.1.2.4 and 4.1.3;

f. In section 5. Test Measurements, by:

1. Revising existing sections 5.1, 5.1.2, 5.1.2.1, 5.1.2.2, 5.1.2.3, and 5.2.1.3;

2. Removing section 5.2.1.4;

3. Redesignating section 5.2.1.5 as 5.2.1.4 and revising redesignated 5.2.1.4;

2. Adding new sections 5.2.1.5 and 5.2.1.6;

g. In section 6. Calculation of Derived Results from Test Measurements, by:

1. Revising Section 6.2;

2. Adding new section 6.2.3;

3. Redesignating Figure 1 in section 6 as Figure 2.

h. Adding a new section 7, Test Procedure Waivers.

The additions and revisions read as follows:

Appendix A1 to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Electric Refrigerators and Electric Refrigerator-Freezers

The provisions of Appendix A1 shall apply to all products manufactured prior to the effective date of any amended standards promulgated by DOE pursuant to Section 325(b)(4) of the Energy Policy and Conservation Act of 1975, as amended by the Energy Independence and Security Act of 2007 (to be codified at 42 U.S.C. 6295(b)(4)).

1. Definitions

Section 3, Definitions, of HRF-1-1979 (incorporated by reference; see § 430.3) is applicable to this test procedure.

1.1 “Adjusted total volume” means the sum of (i) the fresh food compartment volume as defined in HRF-1-1979 in cubic feet, and (ii) the product of an adjustment factor and the net freezer compartment volume as defined in HRF-1-1979, in cubic feet.

1.2 “All-refrigerator” means an electric refrigerator which does not include a compartment for the freezing and long time storage of food at temperatures below 32 °F. (0.0 °C.). It may include a compartment of 0.50 cubic feet capacity (14.2 liters) or less for the freezing and storage of ice.

1.3 “Anti-sweat heater” means a device incorporated into the design of a refrigerator or refrigerator-freezer to prevent the accumulation of moisture on exterior or interior surfaces of the cabinet.

1.4 “Anti-sweat heater switch” means a user-controllable switch or user interface which modifies the activation or control of anti-sweat heaters.

1.6 “Automatic icemaker” means a device that can be supplied with water without user intervention, either from a pressurized water supply system or by transfer from a water reservoir located inside the cabinet, that automatically produces, harvests, and stores ice in a storage bin, with means to automatically interrupt the harvesting operation when the ice storage bin is filled to a pre-determined level.

1.10 “Externally vented refrigerator or refrigerator-freezer” means an electric refrigerator or electric refrigerator-freezer that: has an enclosed condenser or an enclosed condenser/compressor compartment and a set of air ducts for transferring the exterior air from outside the building envelope into, through and out of the refrigerator or refrigerator-freezer cabinet; is capable of mixing exterior air with the room air before discharging into, through, and out of the condenser or condenser/compressor compartment; includes thermostatically controlled dampers or controls that enable the mixing of the exterior and room air at low outdoor temperatures, and the exclusion of exterior air when the outdoor air temperature is above 80 °F or the room air temperature; and may have a thermostatically actuated exterior air fan.

1.11 “HRF-1-1979” means the Association of Home Appliance Manufacturers standard for household refrigerators, combination refrigerator-freezers, and household freezers, also approved as an American National Standard as a revision of ANSI B 38.1-1970. Only sections of HRF-1-1979 (incorporated by reference; see § 430.3) specifically referenced in this test procedure are part of this test procedure. In cases where there is a conflict, the language of the test procedure in this appendix takes precedence over HRF-1-1979.

1.12 “Long-time Automatic Defrost” means an automatic defrost system where successive defrost cycles are separated by 14 hours or more of compressor-operating time.

1.14 “Stabilization Period” means the total period of time during which steady-state conditions are being attained or evaluated.

1.15 “Standard cycle” means the cycle type in which the anti-sweat heater control, when provided, is set in the highest energy consuming position.

1.17 “Variable defrost control” means a long-time automatic defrost system (except the 14-hour defrost qualification does not apply) where successive defrost cycles are determined by an operating condition variable or variables other than solely compressor operating time. This includes any electrical or mechanical device. Demand defrost is a type of variable defrost control.

2. Test Conditions

2.1 Ambient Temperature and Humidity. The ambient temperature shall be 90.0 ± 1 °F (32.2 ± 0.6 °C) during the stabilization period and the test period. If the product being tested has variable anti-sweat heater control, the ambient relative humidity shall be no more than 35%. For the variable anti-sweat heater test described in section 4.1.3, the ambient temperature shall be 72 ± 1 °F (22.2 ± 0.6 °C) dry bulb and the relative humidities for the three portions of the test shall be 25 ± 10%, 65 ± 2%, and 95 ± 2%.

2.2 Operational Conditions. The electric refrigerator or electric refrigerator-freezer shall be installed and its operating conditions maintained in accordance with HRF-1-1979, (incorporated by reference; see § 430.3), section 7.2 through section 7.4.3.3, except that the vertical ambient temperature gradient at locations 10 inches (25.4 cm) out from the centers of the two sides of the unit being tested is to be maintained during the test. Unless the area is obstructed by shields or baffles, the gradient is to be maintained from 2 inches (5.1 cm) above the floor or supporting platform to a height 1 foot (30.5 cm) above the unit under test. Defrost controls are to be operative. Other exceptions and provisions to the cited sections of HRF-1-1979 are noted in sections 2.3 through 2.8, and 5.1 below.

2.3 Anti-Sweat Heaters.

(a) User-Controllable Anti-Sweat Heaters. The anti-sweat heater switch is to be on during one test and off during a second test.

(a) Connection of water lines and installation of water filters are not required;

(b) Clearance requirements from surfaces of the product shall be as described in section 2.8 below;

(c) The electric power supply shall be as described in HRF-1-1979 (incorporated by reference; see § 430.3) section 7.4.1;

(e) The product does not need to be anchored or otherwise secured to prevent tipping during energy testing.

For cases in which set-up is not clearly defined by this test procedure, manufacturers must submit a petition for a waiver (see section 7).

2.7 Compartments that are convertible ( e.g., from fresh food to freezer) shall be operated in the highest energy use position. For the special case of convertible separate auxiliary compartments, this means that the compartment shall be treated as a freezer compartment or a fresh food compartment, depending on which of these represents higher energy use. Other compartments with separate temperature control (such as crispers convertible to meat keepers), with the exception of butter conditioners, shall also be tested with controls set in the highest energy use position.

3. Test Control Settings

3.2 Model with User Operable Temperature Control. Testing shall be performed in accordance with one of the following sections using the standardized temperatures of:

All-Refrigerator: 38 °F (3.3 °C) fresh food compartment temperature;

Refrigerator: 15 °F (−9.4 °C) freezer compartment temperature;

Refrigerator-Freezer: 5 °F (−15 °C) freezer compartment temperature; and

Variable Anti-Sweat Heater Model (Temperatures for the variable anti-sweat heater test of section 4.1.3): 5 °F (−15 °C) freezer compartment temperature and 38 ± 2 °F (3.3 ± 1.1 °F) fresh food compartment temperature during steady-state conditions with no door-openings. If both settings cannot be obtained, then test with the fresh food compartment temperature at 38 ± 2 °F (3.3 ± 1.1 °C) and the freezer compartment as close to 5 °F (-15 °C) as possible.

For the purposes of comparing compartment temperatures with standardized temperatures, as described in sections 3.2.1 through 3.2.3, the freezer compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable freezer compartments, and the fresh food compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable fresh food compartments. Applicable compartments for these calculations may include a first freezer compartment, a first fresh food compartment, and any number of separate auxiliary compartments.

3.2.1 A first test shall be performed with all compartment temperature controls set at their median position midway between their warmest and coldest settings. For mechanical control systems, knob detents shall be mechanically defeated if necessary to attain a median setting. For electronic control systems, the test shall be performed with all compartment temperature controls set at the average of the coldest and warmest settings—if there is no setting equal to this average, the setting closest to the average shall be used. If there are two such settings equally close to the average, the higher of these temperature control settings shall be used. If the compartment temperature measured during the first test is higher than the standardized temperature, the second test shall be conducted with the controls set at the coldest settings. If the compartment temperature measured during the first test is lower than the standardized temperature, the second test shall be conducted with the controls set at the warmest settings. If the compartment temperatures measured during these two tests bound the standardized temperature for the product being tested, then these test results shall be used to determine energy consumption. If the compartment temperature measured with all controls set at their coldest setting is above the standardized temperature, a third test shall be performed with all controls set at their warmest setting and the result of this test shall be used with the result of the test performed with all controls set at their coldest setting to determine energy consumption. If the compartment temperature measured with all controls set at their warmest setting is below the standardized temperature; and the fresh food compartment temperature is below 45 °F (7.22 °C) in the case of a refrigerator or a refrigerator-freezer, excluding an all-refrigerator, then the result of this test alone will be used to determine energy consumption.

4. Test Period

4.1.1 Nonautomatic Defrost. If the model being tested has no automatic defrost system, the test time period shall start after steady state conditions have been achieved, and be of not less than three hours in duration. During the test period the compressor motor shall complete two or more whole compressor cycles (a compressor cycle is a complete “on” and a complete “off” period of the motor). If no “off” cycling will occur, as determined during the stabilization period, the test period shall be 3 hours. If incomplete cycling occurs (less than two compressor cycles during a 24-hour period), the results of the 24-hour period shall be used.

BILLING CODE 6450-01-P EP27MY10.002 BILLING CODE 6450-01-C

5. Test Measurements

5.1 Temperature Measurements. Temperature measurements shall be made at the locations prescribed in Figures 7.1 and 7.2 of HRF-1-1979 (incorporated by reference; see § 430.3) and shall be accurate to within ±0.5 °F (0.3 °C). No freezer temperature measurements need be taken in an all-refrigerator model.

5.1.2.2 If no compressor cycling occurs, the compartment temperature shall be the average of the measured temperatures taken during the last 32 minutes of the test period.

5.2.1.3 Variable Defrost Control. The energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = (1440 × EP1/T1) + (EP2 − (EP1 × T2/T1)) × (12/CT), Where: 1440 is defined in 5.2.1.1 and EP1, EP2, T1, T2, and 12 are defined in 5.2.1.2; CT = (CT L × CT M )/(F × (CT M − CT L ) + CT L ); CT L = least or shortest time between defrosts in hours rounded to the nearest tenth of an hour (greater than or equal to 6 but less than or equal to 12 hours); CT M = maximum time between defrost cycles in hours rounded to the nearest tenth of an hour (greater than CT L but not more than 96 hours); F = ratio of per day energy consumption in excess of the least energy and the maximum difference in per-day energy consumption and is equal to 0.20; For variable defrost models with no values for CT L and CT M in the algorithm, the default values of 12 and 84 shall be used, respectively.

5.2.1.5 Variable Anti-Sweat Heater Test. The energy consumption in kilowatt-hours per day for each portion of the test shall be calculated equivalent to:

ET XX = EP XX × 1440/T XX Where: 1440 is defined in 5.2.1.1; subscript XX = 25, 65, and 95, representing the three relative humidities for which the test is conducted; ET XX = test cycle energy expended in kilowatt-hours per day; EP XX = energy expended during the test period in kilowatt-hours; T XX = length of time of the test period in minutes.

5.2.1.6 Long-time or Variable Defrost Control for Systems with Multiple Defrost cycle Types. The energy consumption in kilowatt-hours per day shall be calculated equivalent to

EP27MY10.005 Where: 1440 is defined in 5.2.1.1 and EP1 and T1 are defined in 5.2.1.2; i is a variable that can equal 1, 2, or more that identifies the distinct defrost cycle types applicable for the refrigerator or refrigerator-freezer; EP2 i = energy expended in kilowatt-hours during the second part of the test for defrost cycle type i; T2 i = length of time in minutes of the second part of the test for defrost cycle type i; CT i is the compressor run time between instances of defrost cycle type i, for long time automatic defrost control equal to a fixed time, and for variable defrost control equal to (CT Li × CT Mi )/(F × (CT Mi − CT Li ) + CT Li ); CT Li = least or shortest time between instances of defrost cycle type i in hours rounded to the nearest tenth of an hour (greater than or equal to 6 but less than or equal to 12 hours); CT Mi = maximum time between instances of defrost cycle type i in hours rounded to the nearest tenth of an hour (greater than CT Li but not more than 96 hours); F = default defrost energy consumption factor, equal to 0.20 in lieu of testing to find CT i ; For variable defrost models with no values for CT Li and CT Mi in the algorithm, the default values of 12 and 84 shall be used, respectively. D is the total number of distinct defrost cycle types. 6. Calculation of Derived Results From Test Measurements

6.2 Average Per-Cycle Energy consumption.

For the purposes of calculating per-cycle energy consumption, as described in this section, the freezer compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable freezer compartments, and the fresh food compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable fresh food compartments. Applicable compartments for these calculations may include a first freezer compartment, a first fresh food compartment, and any number of separate auxiliary compartments.

E VASH = E + (Correction Factor), where E is determined by 6.2.1.1, 6.2.1.2, 6.2.2.1, or 6.2.2.2, whichever is appropriate, with the anti-sweat heater in its minimum energy state corresponding to low ambient humidity during the test. Where Correction Factor: = 0.034 * (Energy Difference at 5% Relative Humidity (RH)), + 0.211 * (Energy Difference at 15% RH) + 0.204 * (Energy Difference at 25% RH) + 0.166 * (Energy Difference at 35% RH) + 0.126 * (Energy Difference at 45% RH) + 0.119 * (Energy Difference at 55% RH) + 0.069 * (Energy Difference at 65% RH) + 0.047 * (Energy Difference at 75% RH) + 0.008 * (Energy Difference at 85% RH) + 0.015 * (Energy Difference at 95% RH) Where: Energy Difference at 65% RH = ED 65 = ET 65 − ET 25 ; Energy Difference at 95% RH = ED 95 = ET 95 − ET 25 ; ET 25 , ET 65 , and ET 95 are determined in accordance with section 5.2.1.6; and Energy Difference DE RH at each other relative humidity RH is the greater of zero or the following: ED RH = ED 65 + (ED 95 −ED 65 ) × (DP RH − DP 65 )/(DP 95 − DP 65 ), Where the dew points DP RH at each of the relative humidities RH in the equation are as follows: DP 5 = 5.06 DP 15 = 27.53; DP 25 = 38.75; DP 35 = 46.43; DP 45 = 52.32; DP 55 = 57.13; DP 65 = 61.20; DP 75 = 64.74; DP 85 = 67.87; DP 95 = 70.69. 7. Test Procedure Waivers

7. Add a new Appendix B to subpart B of part 430 to read as follows:

Appendix B to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Freezers

The provisions of Appendix B shall apply to all products manufactured on or after the effective date of any amended standards promulgated by DOE pursuant to Section 325(b)(4) of the Energy Policy and Conservation Act of 1975, as amended by the Energy Independence and Security Act of 2007 (to be codified at 42 U.S.C. 6295(b)(4)).

1. Definitions

Section 3, Definitions, of HRF-1-2008 (incorporated by reference; see § 430.3) is applicable to this test procedure.

1.1 “Adjusted total volume” means the product of the freezer volume as defined in HRF-1-2008 (incorporated by reference; see § 430.3) in cubic feet times an adjustment factor.

1.2 “Anti-sweat heater” means a device incorporated into the design of a freezer to prevent the accumulation of moisture on exterior or interior surfaces of the cabinet under conditions of high ambient humidity.

1.3 “Anti-sweat heater switch” means a user-controllable switch or user interface which modifies the activation or control of anti-sweat heaters.

1.4 “Automatic defrost” means a system in which the defrost cycle is automatically initiated and terminated, with resumption of normal refrigeration at the conclusion of defrost operation. The system automatically prevents the permanent formation of frost on all refrigerated surfaces. Nominal refrigerated food temperatures are maintained during the operation of the automatic defrost system.

1.5 “Automatic icemaker” means a device, that can be supplied with water without user intervention, either from a pressurized water supply system or by transfer from a water reservoir located inside the cabinet, that automatically produces, harvests, and stores ice in a storage bin, with means to automatically interrupt the harvesting operation when the ice storage bin is filled to a pre-determined level.

1.6 “Cycle” means the period of 24 hours for which the energy use of a freezer is calculated as though the consumer-activated compartment temperature controls were preset so that the standardized temperatures (see section 3.2) was maintained.

1.7 “Cycle type” means the set of test conditions having the calculated effect of operating a freezer for a period of 24 hours with the consumer-activated controls other than the compartment temperature control set to establish various operating characteristics.

1.8 “HRF-1-2008” means the Association of Home Appliance Manufacturers standard Energy, Performance and Capacity of Household Refrigerators, Refrigerator-Freezers and Freezers that was approved September 13, 2008. Only sections of HRF-1-2008 (incorporated by reference; see § 430.3) specifically referenced in this test procedure are part of this test procedure. In cases where there is a conflict, the language of the test procedure in this appendix takes precedence over HRF-1-2008.

1.9 “Long-time automatic defrost” means an automatic defrost system where successive defrost cycles are separated by 14 hours or more of compressor operating time.

1.10 “Quick freeze” means an optional feature on freezers that is initiated manually and shut off manually. It bypasses the thermostat control and places the compressor in a steady-state operating condition until it is shut off.

1.11 “Separate auxiliary compartment” means a freezer compartment of a freezer having more than one compartment that is not the first freezer compartment. Access to a separate auxiliary compartment is through a separate exterior door or doors rather than through the door or doors of another compartment.

1.12 “Stabilization period” means the total period of time during which steady-state conditions are being attained or evaluated.

1.13 “Standard cycle” means the cycle type in which the anti-sweat heater switch, when provided, is set in the highest energy-consuming position.

1.14 “Variable defrost control” means a long-time automatic defrost system (except the 14-hour defrost qualification does not apply) where successive defrost cycles are determined by an operating condition variable or variables other than compressor operating time. This includes any electrical or mechanical device performing this function. Demand defrost is a type of variable defrost control.

2. Test Conditions

2.1 Ambient Temperature. The ambient temperature shall be 90.0 ± 1.0 °F (32.2 ± 0.6 °C) during the stabilization period and the test period. The ambient temperature shall be 80 ± 2 °F (26.7 ± 1.1 °C) dry bulb and 67 °F (19.4 °C) wet bulb during the stabilization period and during the test period when the unit is tested in accordance with section 3.3.

2.2 Operational Conditions. The freezer shall be installed and its operating conditions maintained in accordance with HRF-1-2008, (incorporated by reference; see § 430.3), sections 5.3 through section 5.5.5.5 (but excluding sections 5.5.5.2 and 5.5.5.4), except that the vertical ambient gradient at locations 10 inches (25.4 cm) out from the centers of the two sides of the unit being tested is to be maintained during the test. Unless the area is obstructed by shields or baffles, the gradient is to be maintained from 2 inches (5.1 cm) above the floor or supporting platform to a height 1 foot (30.5 cm) above the unit under test. Defrost controls are to be operative and the anti-sweat heater switch is to be “on” during one test and “off” during a second test. The quick freeze option shall be switched off except as specified in section 3.1. Additional clarifications are noted in sections 2.3 through 2.6.

2.3 Conditions for Automatic Defrost Freezers. For automatic defrost freezers, the freezer compartments shall not be loaded with any frozen food packages during testing. Cylindrical metallic masses of dimensions 1.12 ± 0.25 inches (2.9 ± 0.6 cm) in diameter and height shall be attached in good thermal contact with each temperature sensor within the refrigerated compartments. All temperature measuring sensor masses shall be supported by low-thermal-conductivity supports in such a manner to ensure that there will be at least 1 inch (2.5 cm) of air space separating the thermal mass from contact with any interior surface or hardware inside the cabinet. In case of interference with hardware at the sensor locations specified in section 5.1, the sensors shall be placed at the nearest adjacent location such that there will be a 1-inch air space separating the sensor mass from the hardware.

2.4 The cabinet and its refrigerating mechanism shall be assembled and set up in accordance with the printed consumer instructions supplied with the cabinet. Set-up of the freezer shall not deviate from these instructions, unless explicitly required or allowed by this test procedure. Specific required or allowed deviations from such set-up include the following:

(a) Clearance requirements from surfaces of the product shall be as described in section 2.5 below;

(b) The electric power supply shall be as described in HRF-1-2008 (incorporated by reference; see § 430.3) section 5.5.1;

(d) The product does not need to be anchored or otherwise secured to prevent tipping during energy testing.

For cases in which set-up is not clearly defined by this test procedure, manufacturers must submit a petition for a waiver (see section 7).

2.5 The space between the back of the cabinet and the test room wall or simulated wall shall be the minimum distance in accordance with the manufacturer's instructions. If the instructions do not specify a minimum distance, the cabinet shall be located such that the rear of the cabinet touches the test room wall or simulated wall. The test room wall facing the rear of the cabinet or the simulated wall shall be flat within 1/4 inch, and vertical to within 1 degree. The cabinet shall be leveled to within 1 degree of true level, and positioned with its rear wall parallel to the test chamber wall or simulated wall immediately behind the cabinet. Any simulated wall shall be solid and shall extend vertically from the floor to above the height of the cabinet and horizontally beyond both sides of the cabinet.

2.6 Steady State Condition. Steady-state conditions exist if the temperature measurements taken at four minute intervals or less during a stabilization period are not changing at a rate greater than 0.042 °F (0.023 °C) per hour as determined by the applicable condition of A or B described below.

A—The average of the measurements during a 2-hour period if no cycling occurs or during a number of complete repetitive compressor cycles occurring through a period of no less than 2 hours is compared to the average over an equivalent time period with 3 hours elapsing between the two measurement periods.

B—If A above cannot be used, the average of the measurements during a number of complete repetitive compressor cycles occurring through a period of no less than 2 hours and including the last complete cycle before a defrost period (or if no cycling occurs, the average of the measurements during the last 2 hours before a defrost period) are compared to the same averaging period before the following defrost period.

3. Test Control Settings

3.1 Model with No User Operable Temperature Control. A test shall be performed during which the compartment temperature and energy use shall be measured. A second test shall be performed with the temperature control electrically short circuited to cause the compressor to run continuously. If the model has the quick freeze option, this option must be used to bypass the temperature control.

3.2 Model with User Operable Temperature Control. Testing shall be performed in accordance with one of the following sections using the standardized temperature of 0.0 °F (−17.8 °C).

For the purposes of comparing compartment temperatures with standardized temperatures, as described in sections 3.2.1 through 3.2.3, the freezer compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable freezer compartments. Applicable compartments for these calculations may include a first freezer compartment and any number of separate auxiliary freezer compartments.

3.2.1 A first test shall be performed with all temperature controls set at their median position midway between their warmest and coldest settings. For mechanical control systems, knob detents shall be mechanically defeated if necessary to attain a median setting. For electronic control systems, the test shall be performed with all compartment temperature controls set at the average of the coldest and warmest settings—if there is no setting equal to this average, the setting closest to the average shall be used. If there are two such settings equally close to the average, the higher of these temperature control settings shall be used. A second test shall be performed with all controls set at either their warmest or their coldest setting (not electrically or mechanically bypassed), whichever is appropriate, to attempt to achieve compartment temperatures measured during the two tests which bound ( i.e., one is above and one is below) the standardized temperature. If the compartment temperatures measured during these two tests bound the standardized temperature, then these test results shall be used to determine energy consumption. If the compartment temperature measured with all controls set at their coldest setting is above the standardized temperature, a third test shall be performed with all controls set at their warmest setting and the result of this test shall be used with the result of the test performed with all controls set at their coldest setting to determine energy consumption. If the compartment temperature measured with all controls set at their warmest setting is below the standardized temperature, then the result of this test alone will be used to determine energy consumption. Also see Table 1 below, which summarizes these requirements.

Table 1—Temperature Settings for Freezers First test Settings Results Second test Settings Results Third test settings Energy calculation based on: Mid Low Warm Low None Second Test Only. High None First and Second Tests. High Cold Low None First and Second Tests. High Warm Second and Third Tests.

3.2.2 Alternatively, a first test may be performed with all temperature controls set at their warmest setting. If the compartment temperature is below the standardized temperature, then the result of this test alone will be used to determine energy consumption. If the above condition is not met, then the unit shall be tested in accordance with section 3.2.1.

3.2.3 Alternatively, a first test may be performed with all temperature controls set at their coldest setting. If the compartment temperature is above the standardized temperature, a second test shall be performed with all controls set at their warmest setting and the results of these two tests shall be used to determine energy consumption. If the above condition is not met, then the unit shall be tested in accordance with section 3.2.1.

4. Test Period

4.1 Test Period. Tests shall be performed by establishing the conditions set forth in section 2 and using control settings as set forth in section 3 above.

4.1.1 Nonautomatic Defrost. If the model being tested has no automatic defrost system, the test time period shall start after steady-state conditions have been achieved and be no less than 3 hours in duration. During the test period, the compressor motor shall complete two or more whole compressor cycles. (A compressor cycle is a complete “on” and a complete “off” period of the motor.) If no “off” cycling will occur, as determined during the stabilization period, the test period shall be 3 hours. If incomplete cycling occurs (less than two compressor cycles during a 24-hour period), the results of the 24-hour period shall be used.

5. Test Measurements.

5.1 Temperature Measurements. Temperature measurements shall be made at the locations prescribed in Figure 5-2 of HRF-1-2008 (incorporated by reference; see § 430.3) and shall be accurate to within ± 0.5 °F (0.3°C).

If the interior arrangements of the cabinet do not conform with those shown in Figure 7.2 of HRF-1-1979, the product may be tested by relocating the temperature sensors from the locations specified in the Figures by no more than 2 inches to avoid interference with hardware or components within the cabinet, in which case the specific locations used for the temperature sensors shall be noted in the test data records maintained by the manufacturer in accordance with 10 CFR 430.62(d). For those products equipped with a cabinet that does not conform with Figure 7.2 and cannot be tested in the manner described above, the manufacturer must obtain a waiver under 10 CFR 430.27 to establish an acceptable test procedure for each such product.

5.1.1 Measured Temperature. The measured temperature is to be the average of all sensor temperature readings taken at a particular point in time. Measurements shall be taken at regular intervals not to exceed 4 minutes.

5.1.2 Compartment Temperature. The compartment temperature for each test period shall be an average of the measured temperatures taken during one or more complete compressor cycles. One compressor cycle is one complete motor “on” and one complete motor “off” period. For long-time automatic defrost models, compartment temperature shall be that measured in the first part of the test period specified in section 4.1.2.1. For models equipped with variable defrost controls, compartment temperatures shall be those measured in the first part of the test period specified in section 4.1.2.2.

5.1.2.1 The number of complete compressor cycles over which the measured temperatures in a compartment are to be averaged to determine compartment temperature shall be equal to the number of minutes between measured temperature readings rounded up to the next whole minute or a number of complete compressor cycles over a time period exceeding 1 hour. One of the compressor cycles shall be the last complete compressor cycle during the test period.

5.1.2.2 If no compressor cycling occurs, the compartment temperature shall be the average of the measured temperatures taken during the last 32 minutes of the test period.

5.1.2.3 If incomplete compressor cycling occurs (less than one compressor cycle), the compartment temperature shall be the average of all readings taken during the last 3 hours of the last complete compressor “on” period.

5.2 Energy Measurements:

5.2.1 Per-Day Energy Consumption. The energy consumption in kilowatt-hours per day for each test period shall be the energy expended during the test period as specified in section 4.1 adjusted to a 24-hour period. The adjustment shall be determined as follows:

5.2.1.1 Nonautomatic and Automatic Defrost Models. The energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = (EP × 1440 × K)/T Where: ET = test cycle energy expended in kilowatt-hours per day; EP = energy expended in kilowatt-hours during the test period; T = length of time of the test period in minutes; 1440 = conversion factor to adjust to a 24-hour period in minutes per day; and K = dimensionless correction factor of 0.7 for chest freezers and 0.85 for upright freezers to adjust for average household usage.

5.2.1.2 Long-time Automatic Defrost. If the two part test method is used, the energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = (1440 × K × EP1/T1) + ((EP2−(EP1 × T2/T1)) × K ×12/CT) Where: ET, 1440, and K are defined in section 5.2.1.1; EP1 = energy expended in kilowatt-hours during the first part of the test; EP2 = energy expended in kilowatt-hours during the second part of the test; CT = defrost timer run time in hours required to cause it to go through a complete cycle, to the nearest tenth hour per cycle; 12 = conversion factor to adjust for a 50 percent run time of the compressor in hours per day; and T1 and T2 = length of time in minutes of the first and second test parts respectively.

5.2.1.3 Variable Defrost Control. The energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = (1440 × EP1/T1) + (EP2−(EP1 × T2/T1)) × (12/CT), Where: ET and 1440 are defined in section 5.2.1.1; EP1, EP2, T1, T2, and 12 are defined in section 5.2.1.2; CT = (CT L × CT M )/(F × (CT M −CT L ) + CT L ) Where: CT L = least or shortest time between defrosts in hours rounded to the nearest tenth of an hour (greater than or equal to 6 hours but less than or equal to 12 hours); CT M = maximum time between defrosts in hours rounded to the nearest tenth of an hour (greater than CT L but not more than 96 hours); F = ratio of per day energy consumption in excess of the least energy and the maximum difference in per-day energy consumption and is equal to 0.20. For variable defrost models with no values for CT L and CT M in the algorithm, the default values of 12 and 84 shall be used, respectively.

5.3 Volume Measurements. The total refrigerated volume, VT, shall be measured in accordance with HRF-1-2008, (incorporated by reference; see § 430.3), section 3.30 and sections 4.2 through 4.3.

In the case of freezers with automatic icemakers, the volume occupied by the automatic icemaker, including its ice storage bin, is to be included in the volume measurement.

6. Calculation of Derived Results From Test Measurements

6.1 Adjusted Total Volume. The adjusted total volume, VA, for freezers under test shall be defined as:

VA = VT × CF Where: VA = adjusted total volume in cubic feet; VT = total refrigerated volume in cubic feet; and CF = dimensionless correction factor of 1.76.

6.2 Average Per-Cycle Energy Consumption. For the purposes of calculating per-cycle energy consumption, as described in this section, the freezer compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable freezer compartments. Applicable compartments for these calculations may include a first freezer compartment and any number of separate auxiliary freezer compartments.

6.2.1 The average per-cycle energy consumption for a cycle type is expressed in kilowatt-hours per cycle to the nearest one hundredth (0.01) kilowatt-hour and shall depend on the compartment temperature attainable as shown below.

6.2.1.1 If the compartment temperature is always below 0.0 °F (−17.8 °C), the average per-cycle energy consumption shall be equivalent to:

E = ET1 + IET Where: E = total per-cycle energy consumption in kilowatt-hours per day; ET is defined in 5.2.1; Number 1 indicates the test period during which the highest compartment temperature is measured; and IET, expressed in kilowatt-hours per cycle, equals 0.23 for a product with an automatic icemaker and otherwise equals 0 (zero).

6.2.1.2 If one of the compartment temperatures measured for a test period is greater than 0.0 °F (17.8 °C), the average per-cycle energy consumption shall be equivalent to:

E = ET1 + ((ET2 − ET1) × (0.0 − TF1)/(TF2 − TF1)) + IET Where: E and IET are defined in 6.2.1.1 and ET is defined in 5.2.1; TF = compartment temperature determined according to 5.1.2 in degrees F; Numbers 1 and 2 indicate measurements taken during the first and second test period as appropriate; and 0.0 = standardized compartment temperature in degrees F. 7. Test Procedure Waivers

To the extent that the procedures contained in this appendix do not provide a means for determining the energy consumption of a freezer, a manufacturer must obtain a waiver under 10 CFR 430.27 to establish an acceptable test procedure for each such product. Such instances could, for example, include situations where the test set-up for a particular freezer basic model is not clearly defined by the provisions of section 2. For details regarding the criteria and procedures for obtaining a waiver, please refer to 10 CFR 430.27.

8. Appendix B1 to subpart B of part 430 is amended by:

a. Adding an introductory note after the appendix heading;

b. In section 1. Definitions, by:

1. Adding an introductory note after the heading;

2. Redesignating section 1.1 as 1.7 and revising redesignated 1.7;

3. Revising section 1.2;

4. Redesignating 1.3 as 1.5 and revising redesignated 1.5;

5. Redesignating section 1.4 as 1.6;

6. Redesignating section 1.5 as 1.12;

7. Redesignating section 1.6 as 1.1;

8. Redesignating section 1.7 as 1.4;

9. Redesignating section 1.9 as 1.11;

10. Redesignating section 1.10 as 1.13;

11. Redesignating section 1.11 as 1.9;

12. Adding new sections 1.3, 1.9, and 1.10;

c. In section 2. Test Conditions, by:

1. Revising section 2.2;

2. Redesignating section 2.3 as 2.6;

3. Adding new sections 2.3 through 2.5;

d. In section 3. Test Control Settings, by:

1. Revising sections 3.1, 3.2, and 3.2.1;

2. Removing section 3.3;

e. In section 4, Test Period by:

1. Revising sections 4.1.2.1 and 4.1.2.2;

2. Removing section 4.1.2.3;

f. In section 5, Test Measurements, by:

1. Revising sections 5.1, 5.1.2, 5.1.2.1, 5.1.2.2, 5.1.2.3, and 5.2.1.3;

2. Removing section 5.2.1.4;

g. In section 6. Calculation of Derived Results From Test Measurements, by revising section 6.2;

h. Adding new section 7, Waivers.

The additions and revisions read as follows:

Appendix B1 to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Freezers

The provisions of Appendix B1 shall apply to all products manufactured prior to the effective date of any amended standards promulgated by DOE pursuant to Section 325(b)(4) of the Energy Policy and Conservation Act of 1975, as amended by the Energy Independence and Security Act of 2007 (to be codified at 42 U.S.C. 6295(b)(4)).

1. Definitions

Section 3, Definitions, of HRF-1-1979 (incorporated by reference; see § 430.3) is applicable to this test procedure.

1.3 “Anti-sweat heater switch” means a user-controllable switch or user interface which modifies the activation or control of anti-sweat heaters.

1.5 “Cycle” means the period of 24 hours for which the energy use of a freezer is calculated as though the consumer-activated compartment temperature controls were preset so that the standardized temperature (see section 3.2) was maintained.

1.7 “HRF-1-1979” means the Association of Home Appliance Manufacturers standard for household refrigerators, combination refrigerator-freezers, and household freezers, also approved as an American National Standard as a revision of ANSI B 38.1-1970. Only sections of HRF-1-1979 (incorporated by reference; see § 430.3) specifically referenced in this test procedure are part of this test procedure. In cases where there is a conflict, the language of the test procedure in this appendix takes precedence over HRF-1-1979.

1.10 “Separate auxiliary compartment” means a freezer compartment of a freezer having more than one compartment that is not the first freezer compartment. Access to a separate auxiliary compartment is through a separate exterior door or doors rather than through the door or doors of another compartment.

2.2 Operational Conditions. The freezer shall be installed and its operating conditions maintained in accordance with HRF-1-1979, (incorporated by reference; see § 430.3), section 7.2 through section 7.4.3.3 (but excluding section 7.4.3.2), except that the vertical ambient gradient at locations 10 inches (25.4 cm) out from the centers of the two sides of the unit being tested is to be maintained during the test. Unless the area is obstructed by shields or baffles, the gradient is to be maintained from 2 inches (5.1 cm) above the floor or supporting platform to a height 1 foot (30.5 cm) above the unit under test. Defrost controls are to be operative and the anti-sweat heater switch is to be “on” during one test and “off” during a second test. The quick freeze option shall be switched off except as specified in section 3.1. Additional clarifications are noted in sections 2.3 through 2.5.

(a) Clearance requirements from surfaces of the product shall be as specified in section 2.5 below;

(b) The electric power supply shall be as described in HRF-1-1979 (incorporated by reference; see § 430.3) section 7.4.1;

(d) The product does not need to be anchored or otherwise secured to prevent tipping during energy testing.

For cases in which set-up is not clearly defined by this test procedure, manufacturers must submit a petition for a waiver (see section 7).

2.5 The space between the back of the cabinet and the test room wall or simulated wall shall be the minimum distance in accordance with the manufacturer's instructions. If the instructions do not specify a minimum distance, the cabinet shall be located such that the rear of the cabinet touches the test room wall or simulated wall. The test room wall facing the rear of the cabinet or the simulated wall shall be flat within 1/4 -inch, and vertical to within 1 degree. The cabinet shall be leveled to within 1 degree of true level, and positioned with its rear wall parallel to the test chamber wall or simulated wall immediately behind the cabinet. Any simulated wall shall be solid and shall extend vertically from the floor to above the height of the cabinet and horizontally beyond both sides of the cabinet.

3. Test Control Settings

3.2 Model with User Operable Temperature Control. Testing shall be performed in accordance with one of the following sections using the standardized temperature of 0.0 °F (−17.8 °C).

For the purposes of comparing compartment temperatures with standardized temperatures, as described in sections 3.2.1 through 3.2.3, the freezer compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable freezer compartments. Applicable compartments for these calculations may include a first freezer compartment and any number of separate auxiliary freezer compartments.

3.2.1 A first test shall be performed with all temperature controls set at their median position midway between their warmest and coldest settings. For mechanical control systems, knob detents shall be mechanically defeated if necessary to attain a median setting. For electronic control systems, the test shall be performed with all compartment temperature controls set at the average of the coldest and warmest settings—if there is no setting equal to this average, the setting closest to the average shall be used. If there are two such settings equally close to the average, the higher of these temperature control settings shall be used. If the compartment temperature measured during the first test is higher than the standardized temperature, the second test shall be conducted with the controls set at the coldest settings. If the compartment temperature measured during the first test is lower than the standardized temperature, the second test shall be conducted with the controls set at the warmest settings. If the compartment temperatures measured during these two tests bound the standardized temperature, then these test results shall be used to determine energy consumption. If the compartment temperature measured with all controls set at their coldest settings is above the standardized temperature, a third test shall be performed with all controls set at their warmest settings and the result of this test shall be used with the result of the test performed with all controls set at their coldest settings to determine energy consumption. If the compartment temperature measured with all controls set at their warmest settings is below the standardized temperature, then the result of this test alone will be used to determine energy consumption.

4. Test Period

5. Test Measurements

5.1 Temperature Measurements. Temperature measurements shall be made at the locations prescribed in Figure 7.2 of HRF-1-1979 (incorporated by reference; see § 430.3) and shall be accurate to within ±0.5 °F (0.3 °C).

5.1.2.1 The number of complete compressor cycles over which the measured temperatures in a compartment are to be averaged to determine compartment temperature shall be equal to the number of minutes between measured temperature readings rounded up to the next whole minute or a number of complete compressor cycles over a time period exceeding 1 hour. One of the compressor cycles shall be the last complete compressor cycle during the test period before start of the defrost control sequence for products with automatic defrost.

5.1.2.2 If no compressor cycling occurs, the compartment temperature shall be the average of the measured temperatures taken during the last 32 minutes of the test period.

5.2.1.3 Variable Defrost Control. The energy consumption in kilowatt-hours per day shall be calculated equivalent to:

ET = (1440 × EP1/T1) + (EP2−(EP1 × T2/T1)) × (12/CT), Where: ET and 1440 are defined in section 5.2.1.1 and EP1, EP2, T1, T2, and 12 are defined in section 5.2.1.2; CT = (CT L × CT M )/(F× (CT M −CT L ) + CT L ) Where: CT L = least or shortest time between defrosts in hours rounded to the nearest tenth of an hour (greater than or equal to 6 hours but less than or equal to 12 hours); CT M = maximum time between defrosts in hours rounded to the nearest tenth of an hour (greater than CT L but not more than 96 hours); F = ratio of per day energy consumption in excess of the least energy and the maximum difference in per-day energy consumption and is equal to 0.20. For variable defrost models with no values for CT L and CT M in the algorithm, the default values of 12 and 84 shall be used, respectively. 6. Calculation of Derived Results From Test Measurements

6.2 Average Per Cycle Energy Consumption. For the purposes of calculating per-cycle energy consumption, as described in this section, the freezer compartment temperature shall be equal to a volume-weighted average of the temperatures of all applicable freezer compartments. Applicable compartments for these calculations may include a first freezer compartment and any number of separate auxiliary freezer compartments.

7. Test Procedure Waivers

9. In § 430.62, revise paragraph (a)(4)(xii) to read as follows: