10 CFR Part 430, Subpart B, Appendix J2 to Subpart B of Part 430 - Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes Washers

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View PDF at GPO Pt. 430, Subpt. B, App. J2
Appendix J2 to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes Washers
Manufacturers may use Appendix J1 to certify compliance with existing DOE energy conservation standards until the compliance date of any amended standards that address standby and off mode power consumption for residential clothes washers. After this date, all residential clothes washers shall be tested using the provisions of Appendix J2.
1. Definitions and Symbols
1.1Active mode means a mode in which the clothes washer is connected to a mains power source, has been activated, and is performing one or more of the main functions of washing, soaking, tumbling, agitating, rinsing, and/or removing water from the clothing, or is involved in functions necessary for these main functions, such as admitting water into the washer or pumping water out of the washer. Active mode also includes delay start and cycle finished modes.
1.2Active washing mode means a mode in which the clothes washer is performing any of the operations included in a complete cycle intended for washing a clothing load, including the main functions of washing, soaking, tumbling, agitating, rinsing, and/or removing water from the clothing.
1.3Adaptive control system means a clothes washer control system, other than an adaptive water fill control system, which is capable of automatically adjusting washer operation or washing conditions based on characteristics of the clothes load placed in the clothes container, without allowing or requiring consumer intervention or actions. The automatic adjustments may, for example, include automatic selection, modification, or control of any of the following: Wash water temperature, agitation or tumble cycle time, number of rinse cycles, and spin speed. The characteristics of the clothes load, which could trigger such adjustments, could, for example, consist of or be indicated by the presence of either soil, soap, suds, or any other additive laundering substitute or complementary product.
Note:
Appendix J2 does not provide a means for determining the energy consumption of a clothes washer with an adaptive control system. A waiver must be obtained pursuant to 10 CFR 430.27 to establish an acceptable test procedure for each such clothes washer.
1.4Adaptive water fill control system means a clothes washer water fill control system which is capable of automatically adjusting the water fill level based on the size or weight of the clothes load placed in the clothes container, without allowing or requiring consumer intervention or actions.
1.5Bone-dry means a condition of a load of test cloth which has been dried in a dryer at maximum temperature for a minimum of 10 minutes, removed and weighed before cool down, and then dried again for 10 minute periods until the final weight change of the load is 1 percent or less.
1.6Clothes container means the compartment within the clothes washer that holds the clothes during the operation of the machine.
1.7Cold rinse means the coldest rinse temperature available on the machine.
1.8Combined low-power mode means the aggregate of available modes other than active washing mode, including inactive mode, off mode, delay start mode, and cycle finished mode.
1.9Compact means a clothes washer which has a clothes container capacity of less than 1.6 ft3 (45 L).
1.10Cycle finished mode means an active mode which provides continuous status display, intermittent tumbling, or air circulation following operation in active washing mode.
1.11Deep rinse cycle means a rinse cycle in which the clothes container is filled with water to a selected level and the clothes load is rinsed by agitating it or tumbling it through the water.
1.12Delay start mode means an active mode in which activation of active washing mode is facilitated by a timer.
1.13Energy test cycle for a basic model means:
(A) The cycle selection recommended by the manufacturer for washing cotton or linen clothes, and includes all wash/rinse temperature selections for each of the temperature use factors (TUFs) offered in that cycle, and
(B) If the cycle selection described in Part (A) does not include all wash/rinse temperature selections for each of the TUFs available on the clothes washer, the energy test cycle shall include, in addition to Part (A), the alternate cycle selection(s) offering these remaining wash/rinse temperature selection(s), tested only at the wash/rinse temperature selection(s) for each TUF not available on the cycle selection described in Part (A).
Where multiple alternate cycle selections offer a wash/rinse temperature selection for which a TUF has been developed, and that is not available on the cycle selection recommended by the manufacturer for washing cotton or linen clothes described in Part (A), the alternate cycle selection certified by the manufacturer to have the highest energy consumption for that TUF, as measured according to section 2.13, shall be included in the energy test cycle, so that each TUF that is available on the clothes washer has been tested once.
(C) All cycle selections included under Part (A) and all cycle selections included under Part (B) shall be tested using each appropriate load size as defined in section 2.8 and Table 5.1 of this appendix.
(D) For any cycle selection tested under (A) or (B), the manufacturer default settings shall be used, except for the temperature selection, if necessary. This includes wash conditions such as agitation/tumble operation, soil level, spin speed(s), wash times, rinse times, and all other wash parameters or optional features applicable to that cycle, including water heating time for water heating clothes washers.
(E) Each wash cycle included as part of the energy test cycle shall include the entire active washing mode and exclude any delay start or cycle finished modes.
(F) The energy test cycle shall not include any cycle, if available, that is dedicated for cleaning, deodorizing, or sanitizing the clothes washer, and is separate from clothes washing cycles.
1.14IEC 62301 means the test standard published by the International Electrotechnical Commission, entitled “Household electrical appliances-Measurement of standby power,” Publication 62301, Edition 2.0 2011-01 (incorporated by reference; see § 430.3).
1.15Inactive mode means a standby mode that facilitates the activation of active mode by remote switch (including remote control), internal sensor, or timer, or that provides continuous status display.
1.16Integrated modified energy factor means the quotient of the cubic foot (or liter) capacity of the clothes container divided by the total clothes washer energy consumption per cycle, with such energy consumption expressed as the sum of:
(a) The machine electrical energy consumption;
(b) The hot water energy consumption;
(c) The energy required for removal of the remaining moisture in the wash load; and
(d) The combined low-power mode energy consumption.
1.17Integrated water factor means the quotient of the total weighted per-cycle water consumption for all wash cycles in gallons divided by the cubic foot (or liter) capacity of the clothes washer.
1.18Load usage factor means the percentage of the total number of wash loads that a user would wash a particular size (weight) load.
1.19Lot means a quantity of cloth that has been manufactured with the same batches of cotton and polyester during one continuous process.
1.20Manual control system means a clothes washer control system which requires that the consumer make the choices that determine washer operation or washing conditions, such as, for example, wash/rinse temperature selections and wash time, before starting the cycle.
1.21Manual water fill control system means a clothes washer water fill control system which requires the consumer to determine or select the water fill level.
1.22Modified energy factor means the quotient of the cubic foot (or liter) capacity of the clothes container divided by the total clothes washer energy consumption per cycle, with such energy consumption expressed as the sum of the machine electrical energy consumption, the hot water energy consumption, and the energy required for removal of the remaining moisture in the wash load.
1.23Non-water-heating clothes washer means a clothes washer which does not have an internal water heating device to generate hot water.
1.24Off mode means a mode in which the clothes washer is connected to a mains power source and is not providing any active or standby mode function, and where the mode may persist for an indefinite time. An indicator that only shows the user that the product is in the off position is included within the classification of an off mode.
1.25Roll means a subset of a lot.
1.26Spray rinse cycle means a rinse cycle in which water is sprayed onto the clothes for a period of time without maintaining any specific water level in the clothes container.
1.27Standard means a clothes washer which has a clothes container capacity of 1.6 ft3 (45 L) or greater.
1.28Standby mode means any mode in which the clothes washer is connected to a mains power source and offers one or more of the following user oriented or protective functions that may persist for an indefinite time:
(a) To facilitate the activation of other modes (including activation or deactivation of active mode) by remote switch (including remote control), internal sensor, or timer;
(b) Continuous functions, including information or status displays (including clocks) or sensor-based functions.
A timer is a continuous clock function (which may or may not be associated with a display) that provides regular scheduled tasks (e.g., switching) and that operates on a continuous basis.
1.29Symbol usage. The following identity relationships are provided to help clarify the symbology used throughout this procedure.
C—Capacity
C (with subscripts)—Cold Water Consumption
D—Energy Consumption for Removal of Moisture from Test Load
E—Electrical Energy Consumption
F—Load Usage Factor
H—Hot Water Consumption
HE—Hot Water Energy Consumption
ME—Machine Electrical Energy Consumption
P—Power
Q—Water Consumption
RMC—Remaining Moisture Content
S—Annual Hours
TUF—Temperature Use Factor
V—Temperature-Weighted Hot Water Consumption
W—Mass of Water
WC—Weight of Test Load After Extraction
WI—Initial Weight of Dry Test Load
Subscripts:
a or avg—Average Test Load
B—Part B of the Energy Test Cycle
c—Cold Wash (minimum wash temp.)
corr—Corrected (RMC values)
h—Hot Wash (maximum wash temp. ≤135 °F (57.2 °C))
ia—Inactive Mode
LP—Combined Low-Power Mode
m—Extra Hot Wash (maximum wash temp. >135 °F (57.2 °C))
n—Minimum Test Load
o—Off Mode
oi—Combined Off and Inactive Modes
T—Total
w—Warm Wash
ww—Warm Wash/Warm Rinse
x—Maximum Test Load
The following examples are provided to show how the above symbols can be used to define variables:
EmX = “Electrical Energy Consumption” for an “Extra Hot Wash” and “Maximum Test Load”
HEmin = “Hot Water Energy Consumption” for the “Minimum Test Load”
Pia = “Power” in “Inactive Mode”
Qhmin = “Water Consumption” for a “Hot Wash” and “Minimum Test Load”
TUFm = “Temperature Use Factor” for an “Extra Hot Wash”
1.30Temperature use factor means, for a particular wash/rinse temperature setting, the percentage of the total number of wash loads that an average user would wash with that setting.
1.31Thermostatically controlled water valves means clothes washer controls that have the ability to sense and adjust the hot and cold supply water.
1.32Uniformly distributed warm wash temperature selection(s) means (A) multiple warm wash selections for which the warm wash water temperatures have a linear relationship with all discrete warm wash selections when the water temperatures are plotted against equally spaced consecutive warm wash selections between the hottest warm wash and the coldest warm wash. If the warm wash has infinite selections, the warm wash water temperature has a linear relationship with the distance on the selection device (e.g. dial angle or slide movement) between the hottest warm wash and the coldest warm wash. The criteria for a linear relationship as specified above is that the difference between the actual water temperature at any warm wash selection and the point where that temperature is depicted on the temperature/selection line formed by connecting the warmest and the coldest warm selections is less than ±5 percent. In all cases, the mean water temperature of the warmest and the coldest warm selections must coincide with the mean of the “hot wash” (maximum wash temperature ≤135 °F (57.2 °C)) and “cold wash” (minimum wash temperature) water temperatures within ±3.8 °F (±2.1 °C); or (B) on a clothes washer with only one warm wash temperature selection, a warm wash temperature selection with a water temperature that coincides with the mean of the “hot wash” (maximum wash temperature ≤135 °F (57.2 °C)) and “cold wash” (minimum wash temperature) water temperatures within ±3.8 °F (±2.1 °C).
1.33 Warm rinse means the hottest rinse temperature available on the machine.
1.34Warm wash means all wash temperature selections that are below the maximum wash temperature ≤135 °F (57.2 °C) and above the minimum wash temperature.
1.35Water factor means the quotient of the total weighted per-cycle water consumption for cold wash divided by the cubic foot (or liter) capacity of the clothes washer.
1.36Water-heating clothes washer means a clothes washer where some or all of the hot water for clothes washing is generated by a water heating device internal to the clothes washer.
2. Testing Conditions
2.1Installation. Install the clothes washer in accordance with manufacturer's instructions. For combined low-power mode testing, the product shall be installed in accordance with Section 5, Paragraph 5.2 of IEC 62301 (incorporated by reference; see § 430.3), disregarding the provisions regarding batteries and the determination, classification, and testing of relevant modes.
2.2Electrical energy supply.
2.2.1Supply voltage and frequency. Maintain the electrical supply at the clothes washer terminal block within 2 percent of 120, 120/240, or 120/208Y volts as applicable to the particular terminal block wiring system and within 2 percent of the nameplate frequency as specified by the manufacturer. If the clothes washer has a dual voltage conversion capability, conduct test at the highest voltage specified by the manufacturer.
2.2.2Supply voltage waveform. For the combined low-power mode testing, maintain the electrical supply voltage waveform indicated in Section 4, Paragraph 4.3.2 of IEC 62301. If the power measuring instrument used for testing is unable to measure and record the total harmonic content during the test measurement period, it is acceptable to measure and record the total harmonic content immediately before and after the test measurement period.
2.3Supply Water.
2.3.1Clothes washers in which electrical energy consumption or water energy consumption are affected by the inlet water temperature. (For example, water heating clothes washers or clothes washers with thermostatically controlled water valves.). The temperature of the hot water supply at the water inlets shall not exceed 135 °F (57.2 °C) and the cold water supply at the water inlets shall not exceed 60 °F (15.6 °C). A water meter shall be installed in both the hot and cold water lines to measure water consumption.
2.3.2Clothes washers in which electrical energy consumption and water energy consumption are not affected by the inlet water temperature. The temperature of the hot water supply shall be maintained at 135 °F ± 5 °F (57.2 °C ± 2.8 °C) and the cold water supply shall be maintained at 60 °F ± 5 °F (15.6 °C ± 2.8 °C). A water meter shall be installed in both the hot and cold water lines to measure water consumption.
2.4Water pressure. The static water pressure at the hot and cold water inlet connection of the clothes washer shall be maintained at 35 pounds per square inch gauge (psig) ±2.5 psig (241.3 kPa ±17.2 kPa) when the water is flowing. The static water pressure for a single water inlet connection shall be maintained at 35 psig ±2.5 psig (241.3 kPa ±17.2 kPa) when the water is flowing. A water pressure gauge shall be installed in both the hot and cold water lines to measure water pressure.
2.5Instrumentation. Perform all test measurements using the following instruments, as appropriate:
2.5.1Weighing scales.
2.5.1.1Weighing scale for test cloth. The scale shall have a resolution of no larger than 0.2 oz (5.7 g) and a maximum error no greater than 0.3 percent of the measured value.
2.5.1.2Weighing scale for clothes container capacity measurement. The scale should have a resolution no larger than 0.50 lbs (0.23 kg) and a maximum error no greater than 0.5 percent of the measured value.
2.5.2Watt-hour meter. The watt-hour meter shall have a resolution no larger than 1 Wh (3.6 kJ) and a maximum error no greater than 2 percent of the measured value for any demand greater than 50 Wh (180.0 kJ).
2.5.3Watt meter. The watt meter used to measure combined low-power mode power consumption shall comply with the requirements specified in Section 4, Paragraph 4.4 of IEC 62301. If the power measuring instrument used for testing is unable to measure and record the crest factor, power factor, or maximum current ratio during the test measurement period, it is acceptable to measure and record the crest factor, power factor, and maximum current ratio immediately before and after the test measurement period.
2.5.4Temperature measuring device. The device shall have an error no greater than ±1 °F (±0.6 °C) over the range being measured.
2.5.5Water meter. The water meter shall have a resolution no larger than 0.1 gallons (0.4 liters) and a maximum error no greater than 2 percent for the water flow rates being measured.
2.5.6Water pressure gauge. The water pressure gauge shall have a resolution of 1 pound per square inch gauge (psig) (6.9 kPa) and shall have an error no greater than 5 percent of any measured value.
2.6Test cloths.
2.6.1Energy Test Cloth. The energy test cloth shall be made from energy test cloth material, as specified in section 2.6.4 of this Appendix, that is 24 ± 1/2 inches by 36 ± 1/2 inches (61.0 ± 1.3 cm by 91.4 ± 1.3 cm) and has been hemmed to 22 ± 1/2 inches by 34 ± 1/2 inches (55.9 ± 1.3 cm by 86.4 ± 1.3 cm) before washing. The energy test cloth shall be clean and shall not be used for more than 60 test runs (after preconditioning as specified in 2.6.3 of this appendix). All energy test cloth must be permanently marked identifying the lot number of the material. Mixed lots of material shall not be used for testing a clothes washer.
2.6.2Energy Stuffer Cloth. The energy stuffer cloth shall be made from energy test cloth material, as specified in section 2.6.4 of this Appendix, and shall consist of pieces of material that are 12 ± 1/4 inches by 12 ± 1/4 inches (30.5 ± 0.6 cm by 30.5 ± 0.6 cm) and have been hemmed to 10 ± 1/4 inches by 10 ± 1/4 inches (25.4 ± 0.6 cm by 25.4 ± 0.6 cm) before washing. The energy stuffer cloth shall be clean and shall not be used for more than 60 test runs (after preconditioning as specified in section 2.6.3 of this Appendix). All energy stuffer cloth must be permanently marked identifying the lot number of the material. Mixed lots of material shall not be used for testing a clothes washer.
2.6.3Preconditioning of Test Cloths. The new test cloths, including energy test cloths and energy stuffer cloths, shall be pre-conditioned in a clothes washer in the following manner:
2.6.3.1Perform 5 complete normal wash-rinse-spin cycles, the first two with AHAM Standard detergent Formula 3 and the last three without detergent. Place the test cloth in a clothes washer set at the maximum water level. Wash the load for ten minutes with a minimum fill of 20 gallons of soft water (17 ppm hardness or less) using 27.0 grams 4.0 grams per pound of cloth load of AHAM Standard detergent Formula 3. The wash temperature is to be controlled to 135 °F ± 5 °F (57.2 °C ± 2.8 °C) and the rinse temperature is to be controlled to 60 °F ± 5 °F (15.6 °C ± 2.8 °C). Repeat the cycle with detergent and then repeat the cycle three additional times without detergent, bone drying the load between cycles (total of five wash and rinse cycles).
2.6.4Energy test cloth material. The energy test cloths and energy stuffer cloths shall be made from fabric meeting the following specifications. The material should come from a roll of material with a width of approximately 63 inches and approximately 500 yards per roll. However, other sizes may be used if they fall within the specifications.
2.6.4.1Nominal fabric type. Pure finished bleached cloth made with a momie or granite weave, which is nominally 50 percent cotton and 50 percent polyester.
2.6.4.2The fabric weight specification shall be 5.60 ± 0.25 ounces per square yard (190.0 ± 8.4 g/m2).
2.6.4.3The thread count shall be 65 × 57 per inch (warp × fill), ±2 percent.
2.6.4.4The warp yarn and filling yarn shall each have fiber content of 50 percent ±4 percent cotton, with the balance being polyester, and be open end spun, 15/1 ±5 percent cotton count blended yarn.
2.6.4.5Water repellent finishes, such as fluoropolymer stain resistant finishes shall not be applied to the test cloth. The absence of such finishes shall be verified by:
2.6.4.5.1AATCC Test Method 118-2007, (incorporated by reference; see § 430.3), for each new lot of test cloth (when purchased from the mill) to confirm the absence of Scotchguard TM or other water repellent finish (required scores of “D” across the board).
2.6.4.5.2AATCC Test Method 79-2010, (incorporated by reference; see § 430.3), for each new lot of test cloth (when purchased from the mill) to confirm the absence of ScotchguardTM or other water repellent finish (time to absorb one drop should be on the order of 1 second).
2.6.4.6The moisture absorption and retention shall be evaluated for each new lot of test cloth by the Standard Extractor Remaining Moisture Content (RMC) Test specified in section 2.6.5 of this Appendix.
2.6.4.6.1Repeat the Standard Extractor RMC Test in section 2.6.5 of this Appendix three times.
2.6.4.6.2An RMC correction curve shall be calculated as specified in section 2.6.6 of this Appendix.
2.6.4.7The maximum shrinkage after preconditioning shall not be more than 5 percent of the length and width. Measure per AATCC Test Method 135-2010, (incorporated by reference; see § 430.3).
2.6.5Standard Extractor RMC Test Procedure. The following procedure is used to evaluate the moisture absorption and retention characteristics of a lot of test cloth by measuring the RMC in a standard extractor at a specified set of conditions. Table 2.6.5 of this Appendix is the matrix of test conditions. In the table, “g Force” represents units of gravitational acceleration. When this matrix is repeated 3 times, a total of 60 extractor RMC test runs are required. For the purpose of the extractor RMC test, the test cloths may be used for up to 60 test runs (after preconditioning as specified in section 2.6.3 of this Appendix).
Table 2.6.5—Matrix of extractor RMC test conditions
“g Force” Warm soak Cold soak
15 min. spin 4 min. spin 15 min. spin 4 min. spin
100
200
350
500
650
2.6.5.1The standard extractor RMC tests shall be run in a North Star Engineered Products Inc. (formerly Bock) Model 215 extractor (having a basket diameter of 20 inches, height of 11.5 inches, and volume of 2.09 ft3), with a variable speed drive (North Star Engineered Products, P.O. Box 5127, Toledo, OH 43611) or an equivalent extractor with same basket design (i.e. diameter, height, volume, and hole configuration) and variable speed drive. Table 2.6.5.1 shows the extractor spin speed, in revolutions per minute (RPM), that shall be used to attain each required g-force level.
Table 2.6.5.1—Extractor Spin Speeds for Each Test Condition
“g Force” RPM
100 594 ± 1
200 840 ± 1
350 1111 ± 1
500 1328 ± 1
650 1514 ± 1
2.6.5.2Test Load. Test loads shall be comprised of randomly selected cloth at the beginning, middle and end of a lot. Test cloths shall be preconditioned in accordance with section 2.6.3 of this Appendix. The load size shall be 8.4 lbs. It is acceptable to use two test loads for standard extractor RMC tests, with each load used for half of the total number of required tests.
2.6.5.3Procedure.
2.6.5.3.1Using a dryer that complies with the temperature requirements specified in section 2.12 of this Appendix, dry the test cloth until it is “bone-dry” according to the definition in section 1.5 of this Appendix. Record the “bone-dry” weight of the test load (WI).
2.6.5.3.2Prepare the test load for soak by grouping four test cloths into loose bundles. Bundles are created by hanging four cloths vertically from one corner and loosely wrapping the test cloth onto itself to form the bundle. Bundles should be wrapped loosely to ensure consistency of water extraction. Bundles are then placed into the water to soak. Eight to nine bundles will be formed depending on the test load. The ninth bundle may not equal four cloths but can incorporate energy stuffer cloths to help offset the size difference.
2.6.5.3.3Soak the test load for 20 minutes in 10 gallons of soft (<17 ppm) water. The entire test load shall be submerged. The water temperature shall be 100 °F ± 5 °F (37.8 °C ± 2.8 °C) at all times between the start and end of the soak.
2.6.5.3.4Remove the test load and allow each of the test cloth bundles to drain over the water bath for a maximum of 5 seconds.
2.6.5.3.5Manually place the test cloth bundles in the basket of the extractor, distributing them evenly by eye. The draining and loading process shall take no longer than 1 minute. Spin the load at a fixed speed corresponding to the intended centripetal acceleration level (measured in units of the acceleration of gravity, g) ± 1g for the intended time period ± 5 seconds. The timer shall begin when the extractor meets the required spin speed for each test.
2.6.5.3.6Record the weight of the test load immediately after the completion of the extractor spin cycle (WC).
2.6.5.3.7Calculate the remaining moisture content of the test load as (WC-WI)/WI.
2.6.5.3.8It is not necessary to drain the soak tub if the water bath is corrected for water level and temperature before the next extraction.
2.6.5.3.9It is not necessary to dry the test load in between extraction runs. However, the bone dry weight shall be checked after every 12 extraction runs to make sure the bone dry weight is within tolerance (8.4 ± 0.1 lb).
2.6.5.3.10The test load must be soaked and extracted once following bone drying, before continuing with the remaining extraction runs. This extraction shall be performed at the same spin speed used for the extraction run prior to bone drying, for a time period of 4 minutes. Either warm or cold soak temperature may be used.
2.6.5.3.11The remaining moisture content of the test load shall be measured at five g levels: 100 g, 200 g, 350 g, 500 g, and 650 g, using two different spin times at each g level: 4 minutes and 15 minutes.
2.6.5.4 Repeat section 2.6.5.3 of this Appendix using soft (<17 ppm) water at 60 °F ± 5 °F (15.6 °C ± 2.8 °C).
2.6.6 Calculation of RMC correction curve.
2.6.6.1Average the values of 3 test runs, and fill in Table 2.6.5 of this appendix. Perform a linear least-squares fit to determine coefficients A and B such that the standard RMC values shown in Table 2.6.6.1 of this appendix (RMCstandard) are linearly related to the RMC values measured in section 2.6.5 of this appendix (RMCcloth):
RMCstandard ∼ A * RMCcloth B
where A and B are coefficients of the linear least-squares fit.
Table 2.6.6.1—Standard RMC Values (RMC Standard)
“g Force” RMC percentage
Warm soak Cold soak
15 min. spin(percent) 4 min. spin(percent) 15 min. spin(percent) 4 min. spin(percent)
100 45.9 49.9 49.7 52.8
200 35.7 40.4 37.9 43.1
350 29.6 33.1 30.7 35.8
500 24.2 28.7 25.5 30.0
650 23.0 26.4 24.1 28.0
2.6.6.2Perform an analysis of variance with replication test using two factors, spin speed and lot, to check the interaction of speed and lot. Use the values from Table 2.6.5 and Table 2.6.6.1 of this Appendix in the calculation. The “P” value of the F-statistic for interaction between spin speed and lot in the variance analysis shall be greater than or equal to 0.1. If the “P” value is less than 0.1, the test cloth is unacceptable. “P” is a theoretically based measure of interaction based on an analysis of variance.
2.6.7Application of the RMC correction curve.
2.6.7.1Using the coefficients A and B calculated in section 2.6.6.1 of this Appendix:
RMCcorr = A × RMC B
2.6.7.2Apply this RMC correction curve to measured RMC values in sections 3.8.2.6, 3.8.3.2, and 3.8.3.4 of this Appendix.
2.7Test Load Sizes. Maximum, minimum, and, when required, average test load sizes shall be determined using Table 5.1 of this Appendix and the clothes container capacity as measured in sections 3.1.1 through 3.1.5 of this Appendix. Test loads shall consist of energy test cloths, except that adjustments to the test loads to achieve proper weight can be made by the use of energy stuffer cloths with no more than 5 stuffer cloths per load.
2.8Use of Test Loads. Table 2.8 of this Appendix defines the test load sizes and corresponding water fill settings which are to be used when measuring water and energy consumptions. Adaptive water fill control system and manual water fill control system are defined in section 1 of this Appendix:
Table 2.8—Test Load Sizes and Water Fill Settings Required
Manual water fill control system Adaptive water fill control system
Test load size Water fill setting Test load size Water fill setting
Max Max Max As determined by the Clothes Washer.
Min Min Avg Min
2.8.1The test load sizes to be used to measure RMC are specified in section 3.8.1 of this Appendix.
2.8.2Test loads for energy and water consumption measurements shall be bone dry prior to the first cycle of the test, and dried to a maximum of 104 percent of bone dry weight for subsequent testing.
2.8.3Load the energy test cloths by grasping them in the center, shaking them to hang loosely and then put them into the clothes container prior to activating the clothes washer.
2.9Pre-conditioning of Clothes Washer.
2.9.1Non-water-heating clothes washer. If the clothes washer has not been filled with water in the preceding 96 hours, pre-condition it by running it through a cold rinse cycle and then draining it to ensure that the hose, pump, and sump are filled with water.
2.9.2Water-heating clothes washer. If the clothes washer has not been filled with water in the preceding 96 hours, or if it has not been in the test room at the specified ambient conditions for 8 hours, pre-condition it by running it through a cold rinse cycle and then draining it to ensure that the hose, pump, and sump are filled with water.
2.10Wash time setting. If one wash time is prescribed in the energy test cycle, that shall be the wash time setting; otherwise, the wash time setting shall be the higher of either the minimum or 70 percent of the maximum wash time available in the energy test cycle, regardless of the labeling of suggested dial locations. If the clothes washer is equipped with an electromechanical dial controlling wash time, reset the dial to the minimum wash time and then turn it in the direction of increasing wash time to reach the appropriate setting. If the appropriate setting is passed, return the dial to the minimum wash time and then turn in the direction of increasing wash time until the setting is reached.
2.11Test room temperature. For all clothes washers, maintain the test room ambient air temperature at 75 ± 5 °F (23.9 ± 2.8 °C) for active mode testing and combined low-power mode testing. Do not use the test room ambient air temperature conditions specified in Section 4, Paragraph 4.2 of IEC 62301 for combined low-power mode testing.
2.12Bone dryer temperature. The dryer used for bone drying must heat the test cloth and energy stuffer cloths above 210 °F (99 °C).
2.13Energy consumption for the purpose of certifying the cycle selection(s) to be included in Part (B) of the energy test cycle definition. Where multiple alternate cycle selections offer a wash/rinse temperature selection for which a TUF has been developed, and that is not available on the cycle selection recommended by the manufacturer for washing cotton or linen clothes described in Part (A) of the energy test cycle definition, the alternate cycle selection with the highest energy consumption for that TUF, as measured according to this section, shall be included in the energy test cycle.
2.13.1For the TUF being considered under this section, establish the testing conditions set forth in section 2 of this test procedure. Select the applicable cycle selection and temperature selection. Use the manufacturer default settings for agitation/tumble operation, soil level, spin speed(s), wash times, rinse times, and all other wash parameters or optional features applicable to that cycle selection, including water heating time for water heating clothes washers.
2.13.2Use the clothes washer's maximum test load size, determined from Table 5.1, for testing under this section.
2.13.3For clothes washers with a manual water fill control system, user-adjustable adaptive water fill control system, or adaptive water fill control system with alternate manual water fill control system, use the water fill selector setting resulting in the maximum water level available for each cycle selection for testing under this section.
2.13.4Each wash cycle tested under this section shall include the entire active washing mode and exclude any delay start or cycle finished modes.
2.13.5Measure each cycle selection's electrical energy consumption (EB) and hot water consumption (HB). Calculate the total energy consumption for each cycle selection (ETB), as follows:
ETB = EB (HB × T × K)
Where:
EB is the electrical energy consumption, expressed in kilowatt-hours per cycle.
HB is the hot water consumption, expressed in gallons per cycle.
T = temperature rise = 75 °F (41.7 °C)
K = Water specific heat in kilowatt-hours per gallon per degree F = 0.00240 kWh/gal- °F (0.00114 kWh/L- °C)
3. Test Measurements
3.1Clothes container capacity. Measure the entire volume which a clothes load could occupy within the clothes container during active mode washer operation according to the following procedures:
3.1.1Place the clothes washer in such a position that the uppermost edge of the clothes container opening is leveled horizontally, so that the container will hold the maximum amount of water. For front-loading clothes washers, the shipping bolts and door seal shall remain in place during the capacity measurement.
3.1.2Line the inside of the clothes container with 2 mil (0.051 mm) plastic sheet. All clothes washer components which occupy space within the clothes container and which are recommended for use with the energy test cycle shall be in place and shall be lined with 2 mil (0.051 mm) plastic sheet to prevent water from entering any void space.
3.1.3Record the total weight of the machine before adding water.
3.1.4Fill the clothes container manually with either 60 °F ± 5 °F (15.6 °C ± 2.8 °C) or 100 °F ± 10 °F (37.8 °C ± 5.5 °C) water, with the door open. For a top-loading, vertical-axis clothes washer, fill the clothes container to the uppermost edge of the rotating portion, including any balance ring. For a front-loading, horizontal-axis clothes washer, fill the clothes container to the uppermost edge that is in contact with the door seal. For all clothes washers, any volume which cannot be occupied by the clothing load during operation must be excluded from the measurement. Measure and record the weight of water, W, in pounds.
3.1.5The clothes container capacity is calculated as follows:
C = W/d
Where:
C = Capacity in cubic feet (liters).
W = Mass of water in pounds (kilograms).
d = Density of water (62.0 lbs/ft3 for 100 °F (993 kg/m3 for 37.8 °C) or 62.3 lbs/ft3 for 60 °F (998 kg/m3 for 15.6 °C)).
3.2Procedure for measuring water and energy consumption values on all automatic and semi-automatic washers. All energy consumption tests shall be performed under the energy test cycle(s), unless otherwise specified. Table 3.2 of this Appendix defines the sections below which govern tests of particular clothes washers, based on the number of wash/rinse temperature selections available on the model, and also, in some instances, method of water heating. The procedures prescribed are applicable regardless of a clothes washer's washing capacity, loading port location, primary axis of rotation of the clothes container, and type of control system.
3.2.1Inlet water temperature and the wash/rinse temperature settings.
3.2.1.1For automatic clothes washers, set the wash/rinse temperature selection control to obtain the wash water temperature selection desired (extra hot, hot, warm, or cold) and cold rinse, and open both the hot and cold water faucets.
3.2.1.2For semi-automatic washers:
(1) For hot water temperature, open the hot water faucet completely and close the cold water faucet;
(2) For warm inlet water temperature, open both hot and cold water faucets completely;
(3) For cold water temperature, close the hot water faucet and open the cold water faucet completely.
3.2.1.3Determination of warm wash water temperature(s) to decide whether a clothes washer has uniformly distributed warm wash temperature selections. The wash water temperature, Tw, of each warm water wash selection shall be calculated or measured.
(1) For non-water heating clothes washers, calculate Tw as follows:
Tw( °F) = ((Hw × 135 °F) (Cw × 60 °F))/(Hw Cw)
or
Tw( °C) = ((Hw × 57.2 °C) (Cw × 15.6 °C))/(Hw Cw)
Where:
Hw = Hot water consumption of a warm wash.
Cw = Cold water consumption of a warm wash.
(2) For water-heating clothes washers, measure and record the temperature of each warm wash selection after fill.
3.2.2Total water consumption during the energy test cycle shall be measured, including hot and cold water consumption during wash, deep rinse, and spray rinse.
3.2.3Clothes washers with adaptive water fill/manual water fill control systems.
3.2.3.1Clothes washers with adaptive water fill control system and alternate manual water fill control systems. If a clothes washer with an adaptive water fill control system allows consumer selection of manual controls as an alternative, then both manual and adaptive modes shall be tested and, for each mode, the energy consumption (HET, MET, and DE) and water consumption (QT), values shall be calculated as set forth in section 4 of this Appendix. Then the average of the two values (one from each mode, adaptive and manual) for each variable shall be used in section 4 of this Appendix for the clothes washer.
3.2.3.2Clothes washers with adaptive water fill control system.
3.2.3.2.1Not user adjustable. The maximum, minimum, and average water levels as defined in the following sections shall be interpreted to mean that amount of water fill which is selected by the control system when the respective test loads are used, as defined in Table 2.8 of this Appendix. The load usage factors which shall be used when calculating energy consumption values are defined in Table 4.1.3 of this Appendix.
3.2.3.2.2User adjustable. Four tests shall be conducted on clothes washers with user adjustable adaptive water fill controls which affect the relative wash water levels. The first test shall be conducted with the maximum test load and with the adaptive water fill control system set in the setting that will give the most energy intensive result. The second test shall be conducted with the minimum test load and with the adaptive water fill control system set in the setting that will give the least energy intensive result. The third test shall be conducted with the average test load and with the adaptive water fill control system set in the setting that will give the most energy intensive result for the given test load. The fourth test shall be conducted with the average test load and with the adaptive water fill control system set in the setting that will give the least energy intensive result for the given test load. The energy and water consumption for the average test load and water level shall be the average of the third and fourth tests.
3.2.3.3Clothes washers with manual water fill control system. In accordance with Table 2.8 of this Appendix, the water fill selector shall be set to the maximum water level available on the clothes washer for the maximum test load size and set to the minimum water level for the minimum test load size. The load usage factors which shall be used when calculating energy consumption values are defined in Table 4.1.3 of this Appendix.
TABLE 3.2—Test Section Reference
Max. wash temp. available ≤135 °F (57.2 °C) >135 °F (57.2 °C)**
Number of wash temp. selections 1 2 >2 3 >3
* Only applicable to machines with warm rinse.
** Only applicable to water heating clothes washers on which the maximum wash temperature available exceeds 135 °F (57.2 °C).
Test sections required to be followed 3.3 3.3
3.4 3.4 3.4
3.5 3.5 3.5
3.6 3.6 3.6 3.6 3.6
* 3.7 * 3.7 * 3.7
3.8 3.8 3.8 3.8 3.8
3.3“Extra Hot Wash” (Max Wash Temp >135 °F (57.2 °C)) for water heating clothes washers only. Water and electrical energy consumption shall be measured for each water fill level and/or test load size as specified in sections 3.3.1 through 3.3.3 of this Appendix for the hottest wash setting available.
3.3.1Maximum test load and water fill. Hot water consumption (HmX), cold water consumption (CmX), and electrical energy consumption (EmX) shall be measured for an extra hot wash/cold rinse energy test cycle, with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.3.2Minimum test load and water fill. Hot water consumption (Hmn), cold water consumption (Cmn), and electrical energy consumption (Emn) shall be measured for an extra hot wash/cold rinse energy test cycle, with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.3.3Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hma), cold water consumption (Cma), and electrical energy consumption (Ema) for an extra hot wash/cold rinse energy test cycle, with an average test load size as determined per Table 5.1 of this Appendix.
3.4“Hot Wash” (Max Wash Temp ≤135 °F (57.2 °C)). Water and electrical energy consumption shall be measured for each water fill level and/or test load size as specified in sections 3.4.1 through 3.4.3 of this Appendix for a 135 °F (57.2 °C) wash, if available, or for the hottest selection less than 135 °F (57.2 °C).
3.4.1Maximum test load and water fill. Hot water consumption (HhX), cold water consumption (ChX), and electrical energy consumption (EhX) shall be measured for a hot wash/cold rinse energy test cycle, with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.4.2Minimum test load and water fill. Hot water consumption (Hhn), cold water consumption (Chn), and electrical energy consumption (Ehn) shall be measured for a hot wash/cold rinse energy test cycle, with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.4.3Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hha), cold water consumption (Cha), and electrical energy consumption (Eha) for a hot wash/cold rinse energy test cycle, with an average test load size as determined per Table 5.1 of this Appendix.
3.5“Warm Wash.” Water and electrical energy consumption shall be determined for each water fill level and/or test load size as specified in sections 3.5.1 through 3.5.2.3 of this Appendix for the applicable warm water wash temperature(s) with a cold rinse.
3.5.1Clothes washers with uniformly distributed warm wash temperature selection(s). The reportable values to be used for the warm water wash setting shall be the arithmetic average of the measurements for the hot and cold wash selections. This is a calculation only; no testing is required.
3.5.2Clothes washers that lack uniformly distributed warm wash temperature selections. For a clothes washer with fewer than four discrete warm wash selections, test all warm wash temperature selections. For a clothes washer that offers four or more warm wash selections, test at all discrete selections, or test at 25 percent, 50 percent, and 75 percent positions of the temperature selection device between the hottest hot (≤135 °F (57.2 °C)) wash and the coldest cold wash. If a selection is not available at the 25, 50 or 75 percent position, in place of each such unavailable selection use the next warmer setting. Each reportable value to be used for the warm water wash setting shall be the arithmetic average of all tests conducted pursuant to this section.
3.5.2.1Maximum test load and water fill. Hot water consumption (HwX), cold water consumption (CwX), and electrical energy consumption (EwX) shall be measured with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.5.2.2Minimum test load and water fill. Hot water consumption (Hwn), cold water consumption (Cwn), and electrical energy consumption (Ewn) shall be measured with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.5.2.3Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hwa), cold water consumption (Cwa), and electrical energy consumption (Ewa) with an average test load size as determined per Table 5.1 of this Appendix.
3.6“Cold Wash” (Minimum Wash Temperature Selection). Water and electrical energy consumption shall be measured for each water fill level and/or test load size as specified in sections 3.6.1 through 3.6.3 of this Appendix for the coldest wash temperature selection available. For a clothes washer that offers two or more wash temperature settings labeled as cold, such as “Cold” and “Tap Cold”, the setting with the minimum wash temperature shall be considered the cold wash. If any of the other cold wash temperature settings add hot water to raise the wash temperature above the cold water supply temperature, as defined in section 2.3 of this Appendix, those setting(s) shall be considered warm wash setting(s), as defined in section 1.34 of this Appendix. If none of the cold wash temperature settings add hot water for any of the water fill levels or test load sizes required for the energy test cycle, the wash temperature setting labeled as “Cold” shall be considered the cold wash, and the other wash temperature setting(s) labeled as cold shall not be required for testing.
3.6.1Maximum test load and water fill. Hot water consumption (HcX), cold water consumption (CcX), and electrical energy consumption (EcX) shall be measured for a cold wash/cold rinse energy test cycle, with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.6.2Minimum test load and water fill. Hot water consumption (Hcn), cold water consumption (Ccn), and electrical energy consumption (Ecn) shall be measured for a cold wash/cold rinse energy test cycle, with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.6.3Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hca), cold water consumption (Cca), and electrical energy consumption (Eca) for a cold wash/cold rinse energy test cycle, with an average test load size as determined per Table 5.1 of this Appendix.
3.7“Warm Wash/Warm Rinse.” Water and electrical energy consumption shall be determined for each water fill level and/or test load size as specified in sections 3.7.2.1 through 3.7.2.3 of this Appendix for the applicable warm wash temperature selection as described in section 3.7.1 or 3.7.2 of this Appendix and the hottest available rinse temperature selection.
3.7.1Clothes washers with uniformly distributed warm wash temperature selection(s). Test the warm wash/warm rinse cycle at the wash temperature selection with the temperature selection device at the 50 percent position between the hottest hot (≤135 °F (57.2 °C)) wash and the coldest cold wash.
3.7.2Clothes washers that lack uniformly distributed warm wash temperature selections. For a clothes washer with fewer than four discrete warm wash selections, test all warm wash temperature selections for which a warm rinse is available. For a clothes washer that offers four or more warm wash selections, test at all discrete selections for which a warm rinse is available, or test at 25 percent, 50 percent, and 75 percent positions of the temperature selection device between the hottest hot (≤135 °F (57.2 °C)) wash and the coldest cold wash. If a selection is not available at the 25, 50, or 75 percent position, in place of each such unavailable selection use the next warmer setting. Each reportable value to be used for the warm wash/warm rinse setting shall be the arithmetic average of all tests conducted pursuant to this section.
3.7.2.1Maximum test load and water fill. Hot water consumption (HwwX), cold water consumption (CwwX), and electrical energy consumption (EwwX) shall be measured with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.7.2.2Minimum test load and water fill. Hot water consumption (Hwwn), cold water consumption (Cwwn), and electrical energy consumption (Ewwn) shall be measured with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1 of this Appendix.
3.7.2.3Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hwwa), cold water consumption (Cwwa), and electrical energy consumption (Ewwa) with an average test load size as determined per Table 5.1 of this Appendix.
3.8Remaining Moisture Content:
3.8.1The wash temperature will be the same as the rinse temperature for all testing. Use the maximum test load as defined in Table 5.1 of this Appendix for testing.
3.8.2For clothes washers with cold rinse only:
3.8.2.1Record the actual “bone dry” weight of the test load (WIX), then place the test load in the clothes washer.
3.8.2.2Set water level selector to maximum fill.
3.8.2.3Run the energy test cycle.
3.8.2.4Record the weight of the test load immediately after completion of the energy test cycle (WCX).
3.8.2.5Calculate the remaining moisture content of the maximum test load, RMCX, defined as:
RMCX = (WCX − WIX)/WIX
3.8.2.6Apply the RMC correction curve described in section 2.6.7 of this Appendix to calculate the corrected remaining moisture content, RMCcorr, expressed as a percentage, which shall be the final RMC used in section 4.3 of this Appendix:
RMCcorr = (A × RMCX B) × 100%
Where:
A and B are the coefficients of the RMC correction curve as defined in section 2.6.6.1 of this Appendix.
RMCX = As defined in section 3.8.2.5 of this Appendix.
3.8.3For clothes washers with cold and warm rinse options:
3.8.3.1Complete sections 3.8.2.1 through 3.8.2.4 of this Appendix for cold rinse.
Calculate the remaining moisture content of the maximum test load for cold rinse, RMCCOLD, defined as:
RMCCOLD = (WCX − WIX)/WIX
3.8.3.2Apply the RMC correction curve described in section 2.6.7 of this Appendix to calculate the corrected remaining moisture content for cold rinse, RMCCOLD,corr, expressed as a percentage, as follows:
RMCCOLD,corr = (A × RMCCOLD B) × 100%
Where:
A and B are the coefficients of the RMC correction curve as defined in section 2.6.6.1 of this Appendix.
RMCCOLD = As defined in section 3.8.3.1 of this Appendix.
3.8.3.3Complete sections 3.8.2.1 through 3.8.2.4 of this Appendix for warm rinse. Calculate the remaining moisture content of the maximum test load for warm rinse, RMCWARM, defined as:
RMCWARM = (WCX − WIX)/WIX
3.8.3.4Apply the RMC correction curve described in section 2.6.7 of this Appendix to calculate the corrected remaining moisture content for warm rinse, RMCWARM,corr, expressed as a percentage, as follows:
RMCWARM,corr = (A × RMCWARM B) × 100%
Where:
A and B are the coefficients of the RMC correction curve as defined in section 2.6.6.1 of this Appendix.
RMCWARM = As defined in section 3.8.3.3 of this Appendix.
3.8.3.5Calculate the corrected remaining moisture content of the maximum test load, RMCcorr, expressed as a percentage, which shall be the final RMC used in section 4.3 of this Appendix:
RMCcorr = RMCCOLD,corr × (1 - TUFww) RMCWARM,corr × (TUFww)
Where:
RMCCOLD,corr = As defined in section 3.8.3.2 of this Appendix.
RMCWARM,corr = As defined in section 3.8.3.4 of this Appendix.
TUFww is the temperature use factor for warm rinse as defined in Table 4.1.1 of this Appendix.
3.8.4Clothes washers that have options such as multiple selections of spin speeds or spin times that result in different RMC values and that are available in the energy test cycle, shall be tested at the maximum and minimum extremes of the available options, excluding any “no spin” (zero spin speed) settings, in accordance with requirements in section 3.8.2 or 3.8.3 of this Appendix, as applicable. The calculated RMCcorr,max extraction and RMCcorr,min extraction at the maximum and minimum settings, respectively, shall be combined as follows and the final corrected RMC to be used in section 4.3 of this Appendix shall be:
RMCcorr = 0.75 × RMCcorr,max extraction 0.25 × RMCcorr,min extraction
Where:
RMCcorr,max extraction is the corrected remaining moisture content using the maximum spin setting, calculated according to section 3.8.2 or 3.8.3 of this Appendix, as applicable.
RMCcorr,min extraction is the corrected remaining moisture content using the minimum spin setting, calculated according to section 3.8.2 or 3.8.3 of this Appendix, as applicable.
3.9Combined low-power mode power. Connect the clothes washer to a watt meter as specified in section 2.5.3 of this Appendix. Establish the testing conditions set forth in sections 2.1, 2.2 and 2.11 of this Appendix. For clothes washers that take some time to enter a stable state from a higher power state as discussed in Section 5, Paragraph 5.1, note 1 of IEC 62301 (incorporated by reference; see § 430.3), allow sufficient time for the clothes washer to reach the lower power state before proceeding with the test measurement. Follow the test procedure for the sampling method specified in Section 5, Paragraph 5.3.2 of IEC 62301 for testing in each possible mode as described in sections 3.9.1 and 3.9.2 of this Appendix.
3.9.1If a clothes washer has an inactive mode as defined in section 1.15 of this Appendix, measure and record the average inactive mode power of the clothes washer, Pia, in watts.
3.9.2If a clothes washer has an off mode as defined in section 1.24 of this Appendix, measure and record its average off mode power, Po, in watts.
4. Calculation of Derived Results From Test Measurements
4.1Hot water and machine electrical energy consumption of clothes washers.
4.1.1Per-cycle temperature-weighted hot water consumption for maximum, average, and minimum water fill levels using each appropriate load size as defined in section 2.8 and Table 5.1 of this Appendix. Calculate for the cycle under test the per-cycle temperature-weighted hot water consumption for the maximum water fill level, VhX, the average water fill level, Vha, and the minimum water fill level, Vhn, expressed in gallons per cycle (or liters per cycle) and defined as:
(a) VhX = [HmX × TUFm] [HhX × TUFh] [HwX × TUFw] [HwwX × TUFww] [HcX × TUFc]
(b) Vha = [Hma × TUFm] [Hha × TUFh] [Hwa × TUFw] [Hwwa × TUFww] [Hca × TUFc]
(c) Vhn = [Hmn × TUFm] [Hhn × TUFh] [Hwn × TUFw] [Hwwn × TUFww] [Hcn × TUFc]
Where:
HmX, Hma, and Hmn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the extra hot wash cycle with the appropriate test loads as defined in section 2.8 of this Appendix.
HhX, Hha, and Hhn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the hot wash cycle with the appropriate test loads as defined in section 2.8 of this Appendix.
HwX, Hwa, and Hwn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the warm wash cycle with the appropriate test loads as defined in section 2.8 of this Appendix.
HwwX, Hwwa, and Hwwn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the warm wash/warm rinse cycle with the appropriate test loads as defined in section 2.8 of this Appendix.
HcX, Hca, and Hcn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the cold wash cycle with the appropriate test loads as defined in section 2.8 of this Appendix.
TUFm, TUFh, TUFw, TUFww, and TUFc are temperature use factors for extra hot wash, hot wash, warm wash, warm wash/warm rinse, and cold wash temperature selections, respectively, and are as defined in Table 4.1.1 of this Appendix.
Table 4.1.1—Temperature Use Factors
Max wash temp available ≤135 °F (57.2 °C) >135 °F (57.2 °C)
No. wash temp selections Single 2 Temps >2 Temps 3 Temps >3 Temps
* Only applicable to machines offering a warm/warm cycle. For machines with no warm/warm cycle, TUFww (warm/warm) should be zero.
** For machines offering a warm/warm cycle, TUFw (warm) should be 0.22. For machines with no warm/warm cycle, TUFw (warm) should be 0.49.
TUFm (extra hot) 0.14 0.05
TUFh (hot) 0.63 0.14 0.09
TUFww (warm/warm) * 0.27 * 0.27 * 0.27
TUFw (warm) ** 0.22/0.49 ** 0.22/0.49 ** 0.22/0.49
TUFc (cold) 1.00 0.37 0.37 0.37 0.37
4.1.2Total per-cycle hot water energy consumption for all maximum, average, and minimum water fill levels tested. Calculate the total per-cycle hot water energy consumption for the maximum water fill level, HEmax, the minimum water fill level, HEmin, and the average water fill level, HEavg, expressed in kilowatt-hours per cycle and defined as:
(a) HEmax = [VhX × T × K]=Total energy when a maximum load is tested.
(b) HEavg = [Vha × T× K]=Total energy when an average load is tested.
(c) HEmin = [Vhn × T × K]=Total energy when a minimum load is tested.
Where:
VhX, Vha, and Vhn are as defined in section 4.1.1 of this Appendix.
T = Temperature rise = 75 °F (41.7 °C).
K = Water specific heat in kilowatt-hours per gallon per degree F = 0.00240 kWh/gal- °F (0.00114 kWh/L- °C).
4.1.3Total weighted per-cycle hot water energy consumption. Calculate the total weighted per-cycle hot water energy consumption, HET, expressed in kilowatt-hours per cycle and defined as:
HET = [HEmax × Fmax] [HEavg × Favg] HEmin × Fmin]
Where:
HEmax, HEavg, and HEmin are as defined in section 4.1.2 of this Appendix.
Fmax, Favg, and Fmin are the load usage factors for the maximum, average, and minimum test loads based on the size and type of the control system on the washer being tested. The values are as shown in Table 4.1.3 of this Appendix.
Table 4.1.3—Load Usage Factors
Water fill control system Manual Adaptive
1 Reference 3.2.3.3.
2 Reference 3.2.3.2.
Fmax = 1 0.72 2 0.12
Favg = 2 0.74
Fmin = 1 0.28 2 0.14
4.1.4Total per-cycle hot water energy consumption using gas-heated or oil-heated water. Calculate for the energy test cycle the per-cycle hot water consumption, HETG, using gas-heated or oil-heated water, expressed in Btu per cycle (or megajoules per cycle) and defined as:
HETG = HET × 1/e × 3412 Btu/kWh or HETG = HET × 1/e × 3.6 MJ/kWh
Where:
e = Nominal gas or oil water heater efficiency = 0.75.
HET = As defined in section 4.1.3 of this Appendix.
4.1.5Per-cycle machine electrical energy consumption for all maximum, average, and minimum test load sizes. Calculate the total per-cycle machine electrical energy consumption for the maximum water fill level, MEmax, the average water fill level, MEavg, and the minimum water fill level, MEmin, expressed in kilowatt-hours per cycle and defined as:
(a) MEmax = [EmX× TUFm] [EhX × TUFh] [EwX× TUFw] [EwwX× TUFww] [EcX× TUFc]
(b) MEavg = [Ema × TUFm] [Eha× TUFh] [Ewa× TUFw] [Ewwa× TUFww] [Eca× TUFc]
(c) MEmin = [Emn× TUFm] [Ehn× TUFh] [Ewn× TUFw] [Ewwn× TUFww] [Ecn× TUFc]
Where:
EmX, Ema, and Emn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the extra hot wash cycle.
EhX, Eha, and Ehn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the hot wash cycle.
EwX, Ewa, and Ewn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the warm wash cycle.
EwwX, Ewwa, and Ewwn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the warm wash/warm rinse cycle.
EcX, Eca, and Ecn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the cold wash cycle.
TUFm, TUFh, TUFw, TUFww, and TUFc are as defined in Table 4.1.1 of this Appendix.
4.1.6Total weighted per-cycle machine electrical energy consumption. Calculate the total weighted per-cycle machine electrical energy consumption, MET, expressed in kilowatt-hours per cycle and defined as:
MET = [MEmax × Fmax] [MEavg× Favg] [MEmin× Fmin]
Where:
MEmax, MEavg, and MEmin are as defined in section 4.1.5 of this Appendix.
Fmax, Favg, and Fmin are as defined in Table 4.1.3 of this Appendix.
4.1.7Total per-cycle energy consumption when electrically heated water is used. Calculate for the energy test cycle the total per-cycle energy consumption, ETE, using electrically heated water, expressed in kilowatt-hours per cycle and defined as:
ETE = HET MET
Where:
MET = As defined in section 4.1.6 of this Appendix.
HET = As defined in section 4.1.3 of this Appendix.
4.2Water consumption of clothes washers.
4.2.1Per-cycle water consumption for extra hot wash. Calculate the maximum, average, and minimum total water consumption, expressed in gallons per cycle (or liters per cycle), for the extra hot wash cycle and defined as:
Qmmax = [HmX CmX]
Qmavg = [Hma Cma]
Qmmin = [Hmn Cmn]
Where:
HmX, CmX, Hma, Cma, Hmn, and Cmn are defined in section 3.3 of this Appendix.
4.2.2Per-cycle water consumption for hot wash. Calculate the maximum, average, and minimum total water consumption, expressed in gallons per cycle (or liters per cycle), for the hot wash cycle and defined as:
Qhmax = [HhX ChX]
Qhavg = [Hha Cha]
Qhmin = [Hhn Chn]
Where:
HhX, ChX, Hha, Cha, Hhn, and Chn are defined in section 3.4 of this Appendix.
4.2.3Per-cycle water consumption for warm wash with cold rinse. Calculate the maximum, average, and minimum total water consumption, expressed in gallons per cycle (or liters per cycle), for the warm wash/cold rinse cycle and defined as:
Qwmax = [HwX CwX]
Qwavg = [Hwa Cwa]
Qwmin = [Hwn Cwn]
Where:
HwX, CwX, Hwa, Cwa, Hwn, and Cwn are defined in section 3.5 of this Appendix.
4.2.4Per-cycle water consumption for warm wash with warm rinse. Calculate the maximum, average, and minimum total water consumption, expressed in gallons per cycle (or liters per cycle), for the warm wash/warm rinse cycle and defined as:
Qwwmax = [HwwX CwwX]
Qwwavg = [Hwwa Cwwa]
Qwwmin = [Hwwn Cwwn]
Where:
HwwX, CwwX, Hwwa, Cwwa, Hwwn, and Cwwn are defined in section 3.7 of this Appendix.
4.2.5Per-cycle water consumption for cold wash. Calculate the maximum, average, and minimum total water consumption, expressed in gallons per cycle (or liters per cycle), for the cold wash cycle and defined as:
Qcmax = [HcX CcX]
Qcavg = [Hca Cca]
Qcmin = [Hcn Ccn]
Where:
HcX, CcX, Hca, Cca, Hcn, and Ccn are defined in section 3.6 of this Appendix.
4.2.6Total weighted per-cycle water consumption for extra hot wash. Calculate the total weighted per-cycle water consumption for the extra hot wash cycle, QmT, expressed in gallons per cycle (or liters per cycle) and defined as:
QmT =[Qmmax × Fmax] [Qmavg × Favg] [Qmmin × Fmin]
Where:
Qmmax, Qmavg, Qmmin are defined in section 4.2.1 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of this Appendix.
4.2.7Total weighted per-cycle water consumption for hot wash. Calculate the total weighted per-cycle water consumption for the hot wash cycle, QhT, expressed in gallons per cycle (or liters per cycle) and defined as:
QhT = [Qhmax × Fmax] [Qhavg × Favg] [Qhmin × Fmin]
Where:
Qhmax, Qhavg, Qhmin are defined in section 4.2.2 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of this Appendix.
4.2.8Total weighted per-cycle water consumption for warm wash with cold rinse. Calculate the total weighted per-cycle water consumption for the warm wash/cold rinse cycle, QwT, expressed in gallons per cycle (or liters per cycle) and defined as:
QwT = [Qwmax × Fmax] [Qwavg × Favg] [Qwmin × Fmin]
Where:
Qwmax, Qwavg, Qwmin are defined in section 4.2.3 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of this Appendix.
4.2.9Total weighted per-cycle water consumption for warm wash with warm rinse. Calculate the total weighted per-cycle water consumption for the warm wash/warm rinse cycle, QwwT, expressed in gallons per cycle (or liters per cycle) and defined as:
QwwT = [Qwwmax × Fmax] [Qwwavg × Favg] [Qwwmin × Fmin]
Where:
Qwwmax, Qwwavg, Qwwmin are defined in section 4.2.4 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of this Appendix.
4.2.10Total weighted per-cycle water consumption for cold wash. Calculate the total weighted per-cycle water consumption for the cold wash cycle, QcT, expressed in gallons per cycle (or liters per cycle) and defined as:
QcT = [Qcmax × Fmax] [Qcavg × Favg] [Qcmin × Fmin]
Where:
Qcmax, Qcavg, Qcmin are defined in section 4.2.5 of this Appendix.
Fmax, Favg, Fmin are defined in Table 4.1.3 of this Appendix.
4.2.11Total weighted per-cycle water consumption for all wash cycles. Calculate the total weighted per-cycle water consumption for all wash cycles, QT, expressed in gallons per cycle (or liters per cycle) and defined as:
QT = [QmT × TUFm] [QhT × TUFh] [QwT × TUFw] [QwwT × TUFww] [QcT × TUFc]
Where:
QmT, QhT, QwT, QwwT, and QcT are defined in sections 4.2.6 through 4.2.10 of this Appendix.
TUFm, TUFh, TUFw, TUFww, and TUFc are defined in Table 4.1.1 of this Appendix.
4.2.12Water factor. Calculate the water factor, WF, expressed in gallons per cycle per cubic foot (or liters per cycle per liter), as:
WF = QcT/C
Where:
QcT = As defined in section 4.2.10 of this Appendix.
C = As defined in section 3.1.5 of this Appendix.
4.2.13Integrated water factor. Calculate the integrated water factor, IWF, expressed in gallons per cycle per cubic foot (or liter per cycle per liter), as:
IWF = QT/C
Where:
QT = As defined in section 4.2.11 of this Appendix.
C = As defined in section 3.1.5 of this Appendix.
4.3Per-cycle energy consumption for removal of moisture from test load. Calculate the per-cycle energy required to remove the remaining moisture of the test load, DE, expressed in kilowatt-hours per cycle and defined as:
DE = [(Fmax × Maximum test load weight) (Favg × Average test load weight) (Fmin × Minimum test load weight)]× (RMCcorr−4%) × (DEF) × (DUF)
Where:
Fmax, Favg, and Fmin are as defined in Table 4.1.3 of this Appendix.
Maximum, average, and minimum test load weights are as defined in Table 5.1 of this Appendix.
RMCcorr = As defined in section 3.8.2.6, 3.8.3.5, or 3.8.4 of this Appendix.
DEF = Nominal energy required for a clothes dryer to remove moisture from clothes = 0.5 kWh/lb (1.1 kWh/kg).
DUF = Dryer usage factor, percentage of washer loads dried in a clothes dryer = 0.91.
4.4Per-cycle combined low-power mode energy consumption. Calculate the per-cycle combined low-power mode energy consumption, ETLP, expressed in kilowatt-hours per cycle and defined as:
ETLP = [(Pia × Sia) (Po × So)] × Kp/295.
Where:
Pia = Washer inactive mode power, in watts, as defined in section 3.9.1 of this Appendix for clothes washers capable of operating in inactive mode; otherwise, Pia = 0.
Po = Washer off mode power, in watts, as defined in section 3.9.2 of this Appendix for clothes washers capable of operating in off mode; otherwise, Po=0.
Sia = Annual hours in inactive mode as defined as Soi if no off mode is possible, [Soi/2] if both inactive mode and off mode are possible, and 0 if no inactive mode is possible.
So = Annual hours in off mode as defined as Soi if no inactive mode is possible, [Soi/2] if both inactive mode and off mode are possible, and 0 if no off mode is possible.
Soi = Combined annual hours for off and inactive mode = 8,465.
Kp = Conversion factor of watt-hours to kilowatt-hours = 0.001.
295 = Representative average number of clothes washer cycles in a year.
4.5Modified energy factor. Calculate the modified energy factor, MEF, expressed in cubic feet per kilowatt-hour per cycle (or liters per kilowatt-hour per cycle) and defined as:
MEF = C/(ETE DE)
Where:
C = As defined in section 3.1.5 of this Appendix.
ETE = As defined in section 4.1.7 of this Appendix.
DE = As defined in section 4.3 of this Appendix.
4.6Integrated modified energy factor. Calculate the integrated modified energy factor, IMEF, expressed in cubic feet per kilowatt-hour per cycle (or liters per kilowatt-hour per cycle) and defined as:
IMEF = C/(ETE DE ETLP)
Where:
C = As defined in section 3.1.5 of this Appendix.
ETE = As defined in section 4.1.7 of this Appendix.
DE = As defined in section 4.3 of this Appendix.
ETLP = As defined in section 4.4 of this Appendix.
5. Test Loads
Table 5.1—Test Load Sizes
Container volume Minimum load Maximum load Average load
cu. ft.≥< liter≥< lb kg lb kg lb kg
Notes: (1) All test load weights are bone dry weights.
(2) Allowable tolerance on the test load weights are ±0.10 lbs (0.05 kg).
0-0.80 0-22.7 3.00 1.36 3.00 1.36 3.00 1.36
0.80-0.90 22.7-25.5 3.00 1.36 3.50 1.59 3.25 1.47
0.90-1.00 25.5-28.3 3.00 1.36 3.90 1.77 3.45 1.56
1.00-1.10 28.3-31.1 3.00 1.36 4.30 1.95 3.65 1.66
1.10-1.20 31.1-34.0 3.00 1.36 4.70 2.13 3.85 1.75
1.20-1.30 34.0-36.8 3.00 1.36 5.10 2.31 4.05 1.84
1.30-1.40 36.8-39.6 3.00 1.36 5.50 2.49 4.25 1.93
1.40-1.50 39.6-42.5 3.00 1.36 5.90 2.68 4.45 2.02
1.50-1.60 42.5-45.3 3.00 1.36 6.40 2.90 4.70 2.13
1.60-1.70 45.3-48.1 3.00 1.36 6.80 3.08 4.90 2.22
1.70-1.80 48.1-51.0 3.00 1.36 7.20 3.27 5.10 2.31
1.80-1.90 51.0-53.8 3.00 1.36 7.60 3.45 5.30 2.40
1.90-2.00 53.8-56.6 3.00 1.36 8.00 3.63 5.50 2.49
2.00-2.10 56.6-59.5 3.00 1.36 8.40 3.81 5.70 2.59
2.10-2.20 59.5-62.3 3.00 1.36 8.80 3.99 5.90 2.68
2.20-2.30 62.3-65.1 3.00 1.36 9.20 4.17 6.10 2.77
2.30-2.40 65.1-68.0 3.00 1.36 9.60 4.35 6.30 2.86
2.40-2.50 68.0-70.8 3.00 1.36 10.00 4.54 6.50 2.95
2.50-2.60 70.8-73.6 3.00 1.36 10.50 4.76 6.75 3.06
2.60-2.70 73.6-76.5 3.00 1.36 10.90 4.94 6.95 3.15
2.70-2.80 76.5-79.3 3.00 1.36 11.30 5.13 7.15 3.24
2.80-2.90 79.3-82.1 3.00 1.36 11.70 5.31 7.35 3.33
2.90-3.00 82.1-85.0 3.00 1.36 12.10 5.49 7.55 3.42
3.00-3.10 85.0-87.8 3.00 1.36 12.50 5.67 7.75 3.52
3.10-3.20 87.8-90.6 3.00 1.36 12.90 5.85 7.95 3.61
3.20-3.30 90.6-93.4 3.00 1.36 13.30 6.03 8.15 3.70
3.30-3.40 93.4-96.3 3.00 1.36 13.70 6.21 8.35 3.79
3.40-3.50 96.3-99.1 3.00 1.36 14.10 6.40 8.55 3.88
3.50-3.60 99.1-101.9 3.00 1.36 14.60 6.62 8.80 3.99
3.60-3.70 101.9-104.8 3.00 1.36 15.00 6.80 9.00 4.08
3.70-3.80 104.8-107.6 3.00 1.36 15.40 6.99 9.20 4.17
3.80-3.90 107.6-110.4 3.00 1.36 15.80 7.16 9.40 4.26
3.90-4.00 110.4-113.3 3.00 1.36 16.20 7.34 9.60 4.35
4.00-4.10 113.3-116.1 3.00 1.36 16.60 7.53 9.80 4.45
4.10-4.20 116.1-118.9 3.00 1.36 17.00 7.72 10.00 4.54
4.20-4.30 118.9-121.8 3.00 1.36 17.40 7.90 10.20 4.63
4.30-4.40 121.8-124.6 3.00 1.36 17.80 8.09 10.40 4.72
4.40-4.50 124.6-127.4 3.00 1.36 18.20 8.27 10.60 4.82
4.50-4.60 127.4-130.3 3.00 1.36 18.70 8.46 10.85 4.91
4.60-4.70 130.3-133.1 3.00 1.36 19.10 8.65 11.05 5.00
4.70-4.80 133.1-135.9 3.00 1.36 19.50 8.83 11.25 5.10
4.80-4.90 135.9-138.8 3.00 1.36 19.90 9.02 11.45 5.19
4.90-5.00 138.8-141.6 3.00 1.36 20.30 9.20 11.65 5.28
5.00-5.10 141.6-144.4 3.00 1.36 20.70 9.39 11.85 5.38
5.10-5.20 144.4-147.2 3.00 1.36 21.10 9.58 12.05 5.47
5.20-5.30 147.2-150.1 3.00 1.36 21.50 9.76 12.25 5.56
5.30-5.40 150.1-152.9 3.00 1.36 21.90 9.95 12.45 5.65
5.40-5.50 152.9-155.7 3.00 1.36 22.30 10.13 12.65 5.75
5.50-5.60 155.7-158.6 3.00 1.36 22.80 10.32 12.90 5.84
5.60-5.70 158.6-161.4 3.00 1.36 23.20 10.51 13.10 5.93
5.70-5.80 161.4-164.2 3.00 1.36 23.60 10.69 13.30 6.03
5.80-5.90 164.2-167.1 3.00 1.36 24.00 10.88 13.50 6.12
5.90-6.00 167.1-169.9 3.00 1.36 24.40 11.06 13.70 6.21
6. Waivers and Field Testing
6.1Waivers and Field Testing for Nonconventional Clothes Washers. Manufacturers of nonconventional clothes washers, such as clothes washers with adaptive control systems, must submit a petition for waiver pursuant to 10 CFR 430.27 to establish an acceptable test procedure for that clothes washer if the washer cannot be tested pursuant to the DOE test procedure or the DOE test procedure yields results that are so unrepresentative of the clothes washer's true energy consumption characteristics as to provide materially inaccurate comparative data. In such cases, field testing may be appropriate for establishing an acceptable test procedure. The following are guidelines for field testing which may be used by manufacturers in support of petitions for waiver. These guidelines are not mandatory and the Department may determine that they do not apply to a particular model. Depending upon a manufacturer's approach for conducting field testing, additional data may be required. Manufacturers are encouraged to communicate with the Department prior to the commencement of field tests which may be used to support a petition for waiver. Section 6.3 of this Appendix provides an example of field testing for a clothes washer with an adaptive water fill control system. Other features, such as the use of various spin speed selections, could be the subject of field tests.
6.2Nonconventional Wash System Energy Consumption Test. The field test may consist of a minimum of 10 of the nonconventional clothes washers (“test clothes washers”) and 10 clothes washers already being distributed in commerce (“base clothes washers”). The tests should include a minimum of 50 energy test cycles per clothes washer. The test clothes washers and base clothes washers should be identical in construction except for the controls or systems being tested. Equal numbers of both the test clothes washer and the base clothes washer should be tested simultaneously in comparable settings to minimize seasonal or consumer laundering conditions or variations. The clothes washers should be monitored in such a way as to accurately record the average total energy and water consumption per cycle, including water heating energy when electrically heated water is used, and the energy required to remove the remaining moisture of the test load. Standby and off mode energy consumption should be measured according to section 4.4 of this test procedure. The field test results should be used to determine the best method to correlate the rating of the test clothes washer to the rating of the base clothes washer.
6.3Adaptive water fill control system field test. (1) Section 3.2.3.1 of this Appendix defines the test method for measuring energy consumption for clothes washers which incorporate both adaptive and alternate manual water fill control systems. Energy consumption calculated by the method defined in section 3.2.3.1 of this Appendix assumes the adaptive cycle will be used 50 percent of the time. This section can be used to develop field test data in support of a petition for waiver when it is believed that the adaptive cycle will be used more than 50 percent of the time. The field test sample size should be a minimum of 10 test clothes washers. The test clothes washers should be representative of the design, construction, and control system that will be placed in commerce. The duration of field testing in the user's house should be a minimum of 50 energy test cycles, for each unit. No special instructions as to cycle selection or product usage should be given to the field test participants, other than inclusion of the product literature pack which would be shipped with all units, and instructions regarding filling out data collection forms, use of data collection equipment, or basic procedural methods. Prior to the test clothes washers being installed in the field test locations, baseline data should be developed for all field test units by conducting laboratory tests as defined by section 1 through section 5 of this Appendix to determine the energy consumption, water consumption, and remaining moisture content values. The following data should be measured and recorded for each wash load during the test period: Wash cycle selected, the mode of the clothes washer (adaptive or manual), clothes load dry weight (measured after the clothes washer and clothes dryer cycles are completed) in pounds, and type of articles in the clothes load (e.g., cottons, linens, permanent press). The wash loads used in calculating the in-home percentage split between adaptive and manual cycle usage should be only those wash loads which conform to the definition of the energy test cycle.
Calculate:
T=The total number of energy test cycles run during the field test.
Ta=The total number of adaptive control energy test cycles.
Tm=The total number of manual control energy test cycles.
The percentage weighting factors:
Pa=(Ta/T) × 100% (the percentage weighting for adaptive control selection)
Pm=(Tm/T) × 100% (the percentage weighting for manual control selection)
(2) Energy consumption (HET, MET, and DE) and water consumption (QT), values calculated in section 4 of this Appendix for the manual and adaptive modes, should be combined using Pa and Pm as the weighting factors.
[77 FR 13939, Mar. 7, 2012]

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  • 2014-07-29; vol. 79 # 145 - Tuesday, July 29, 2014
    1. 79 FR 43927 - Energy Conservation Program for Consumer Products: Energy Conservation Standards for Residential Furnaces; Energy Conservation Standards for Residential Direct Heating Equipment
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      DEPARTMENT OF ENERGY, Office of Energy Efficiency and Renewable Energy
      Final rule; technical amendment.
      Effective Date: July 29, 2014.
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    1. 79 FR 45377 - Energy Conservation Program for Consumer Products: Energy Conservation Standards for Computer and Battery Backup Systems
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      Extension of public comment period.
      The comment period for the framework document for computer systems published on July 17, 2014 (79 FR 41656) is extended to October 2, 2014.
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