Title 10
PART 430 APPENDIX J1
| Water fill control system type | Test load size | Water fill setting |
|---|---|---|
| Manual water fill control system | Max Min |
Max. Min. |
| Automatic water fill control system | Max Avg Min |
As determined by the clothes washer. |
2.8.1 The test load sizes to be used to measure RMC are specified in section 3.8.1.
2.8.2 Test 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.
2.8.3 Prepare the energy test cloths for loading by grasping them in the center, lifting, and shaking them to hang loosely, as illustrated in Figure 2.8.3 of this appendix.
For all clothes washers, follow any manufacturer loading instructions provided to the user regarding the placement of clothing within the clothes container. In the absence of any manufacturer instructions regarding the placement of clothing within the clothes container, the following loading instructions apply.
2.8.3.1 To load the energy test cloths in a top-loading clothes washer, arrange the cloths circumferentially around the axis of rotation of the clothes container, using alternating lengthwise orientations for adjacent pieces of cloth. Complete each cloth layer across its horizontal plane within the clothes container before adding a new layer. Figure 2.8.3.1 of this appendix illustrates the correct loading technique for a vertical-axis clothes washer.
2.8.3.2 To load the energy test cloths in a front-loading clothes washer, grasp each test cloth in the center as indicated in section 2.8.3 of this appendix, and then place each cloth into the clothes container prior to activating the clothes washer.
2.9 Pre-conditioning.
2.9.1 Nonwater-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.
2.9.2 Water-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.
2.10 Wash 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 70% of the maximum wash time is not available on a dial with a discreet number of wash time settings, choose the next-highest setting greater than 70%. 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 appropriate setting is reached.
2.11 Test room temperature for water-heating clothes washers. Maintain the test room ambient air temperature at 75 °F±5 °F (23.9 °C±2.8 °C).
3. Test Measurements3.1 Clothes container capacity. Measure the entire volume which a dry clothes load could occupy within the clothes container during washer operation according to the following procedures:
3.1.1 Place 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 door seal and shipping bolts or other forms of bracing hardware to support the wash drum during shipping must remain in place during the capacity measurement.
If the design of a front-loading clothes washer does not include shipping bolts or other forms of bracing hardware to support the wash drum during shipping, a laboratory may support the wash drum by other means, including temporary bracing or support beams. Any temporary bracing or support beams must keep the wash drum in a fixed position, relative to the geometry of the door and door seal components, that is representative of the position of the wash drum during normal operation. The method used must avoid damage to the unit that would affect the results of the energy and water testing.
For a front-loading clothes washer that does not include shipping bolts or other forms of bracing hardware to support the wash drum during shipping, the test report must document the alternative method used to support the wash drum during capacity measurement, and, pursuant to § 429.71 of this chapter, the manufacturer must retain such documentation as part of its test records.
3.1.2 Line the inside of the clothes container with a 2 mil thickness (0.051 mm) plastic bag. All clothes washer components that occupy space within the clothes container and that are recommended for use during a wash cycle must be in place and must be lined with a 2 mil thickness (0.051 mm) plastic bag to prevent water from entering any void space.
3.1.3 Record the total weight of the machine before adding water.
3.1.4 Fill 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 to its uppermost edge. For a top-loading, vertical-axis clothes washer, the uppermost edge of the clothes container is defined as the highest point of the innermost diameter of the tub cover. Figure 3.1.4.1 illustrates the maximum fill level for top-loading vertical-axis clothes washers. Figure 3.1.4.2 shows the location of the maximum fill level for a variety of example tub cover designs.
For a front-loading horizontal-axis clothes washer, fill the clothes container to the highest point of contact between the door and the door gasket. If any portion of the door or gasket would occupy the measured volume space when the door is closed, exclude the volume that the door or gasket portion would occupy from the measurement. For a front-loading horizontal-axis clothes washer with a concave door shape, include any additional volume above the plane defined by the highest point of contact between the door and the door gasket, if that area can be occupied by clothing during washer operation. For a top-loading horizontal-axis clothes washer, include any additional volume above the plane of the door hinge that clothing could occupy during washer operation. Figure 3.1.4.3 illustrates the maximum fill volumes for all horizontal-axis clothes washer types.
For all clothes washers, exclude any volume that cannot be occupied by the clothing load during operation.
3.1.5 Measure and record the weight of water, W, in pounds. Calculate the clothes container capacity 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/ft 3 for 100 °F (993 kg/m 3 for 37.8 °C) or 62.3 lbs/ft 3 for 60 °F (998 kg/m 3 for 15.6 °C)).3.1.6 Calculate the clothes container capacity, C, to the nearest 0.01 cubic foot for the purpose of determining test load sizes per Table 5.1 of this appendix and for all subsequent calculations in this appendix that include the clothes container capacity.
3.2 Procedure 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 indicates the sections below that 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. Data from a wash cycle that provides a visual or audio indicator to alert the user that an out-of-balance condition has been detected, or that terminates prematurely if an out-of-balance condition is detected, and thus does not include the agitation/tumble operation, spin speed(s), wash times, and rinse times applicable to the wash cycle under test, shall be discarded. The test report must document the rejection of data from any wash cycle during testing and the reason for the rejection.
3.2.1 Inlet water temperature and the wash/rinse temperature settings.
3.2.1.1 For automatic clothes washers set the wash/rinse temperature selection control to obtain the wash water temperature desired (extra hot, hot, warm, or cold) and cold rinse, and open both the hot and cold water faucets.
3.2.1.2 For 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.
3.2.2 Total water consumption during the energy test cycle shall be measured, including hot and cold water consumption during wash, deep rinse, and spray rinse.
3.2.3 Clothes washers with automatic water fill/manual water fill control systems
3.2.3.1 Clothes washers with automatic water fill control system and alternate manual water fill control system. If a clothes washer with an automatic water fill control system allows user selection of manual controls as an alternative, then both manual and automatic 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. Then the average of the two values (one from each mode, automatic and manual) for each variable shall be used in section 4 for the clothes washer.
3.2.3.2 Clothes washers with automatic water fill control system.
3.2.3.2.1. Not 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. The load usage factors which shall be used when calculating energy consumption values are defined in Table 4.1.3.
3.2.3.2.2 User-adjustable. Four tests shall be conducted on clothes washers with user-adjustable automatic water fill controls that affect the relative wash water levels. The first test shall be conducted using the maximum test load and with the automatic 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 automatic 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 automatic 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 automatic 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.
3.2.3.3 Clothes washers with manual water fill control system. In accordance with Table 2.8, the water fill selector shall be set to the maximum water level available for the wash cycle under test for the maximum test load size and the minimum water level available for the wash cycle under test for the minimum test load size.
Table 3.2 - Test Section Reference
| Max. wash temp. available | ≤135 °F (57.2 °C) | >135 °F (57.2 °C) 2 | |||
|---|---|---|---|---|---|
| Number of wash temp. Selections in the energy test cycle | 1 | 2 | >2 | 3 | >3 |
| 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 | |
| 1 3.7 | 1 3.7 | 1 3.7 | 1 3.7 | 1 3.7 | |
| 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | |
1 Only applicable to machines with warm rinse in any cycle.
2 This only applies to water heating clothes washers on which the maximum wash temperature available exceeds 135 °F (57.2 °C).
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 3.3.1 through 3.3.3 for the hottest wash setting available.
Non-reversible temperature indicator labels, adhered to the inside of the clothes container, may be used to confirm that an extra-hot wash temperature greater than 135 °F has been achieved during the wash cycle, under the following conditions. The label must remain waterproof, intact, and adhered to the wash drum throughout an entire wash cycle; provide consistent maximum temperature readings; and provide repeatable temperature indications sufficient to demonstrate that a wash temperature of greater than 135 °F has been achieved. The label must have been verified to consistently indicate temperature measurements with an accuracy of ±1 °F if the label provides a temperature indicator at 135 °F. If the label does not provide a temperature indicator at 135 °F, the label must have been verified to consistently indicate temperature measurements with an accuracy of ±1 °F if the next-highest temperature indicator is greater than 135 °F and less than 140 °F, or ±3 °F if the next-highest temperature indicator is 140 °F or greater. If the label does not provide a temperature indicator at 135 °F, failure to activate the next-highest temperature indicator does not necessarily indicate the lack of an extra-hot wash temperature. However, such a result would not be considered a valid test due to the lack of verification of the water temperature requirement, in which case an alternative method must be used to confirm that an extra-hot wash temperature greater than 135 °F has been achieved during the wash cycle.
If using a temperature indicator label to test a front-loading clothes washer, adhere the label along the interior surface of the clothes container drum, midway between the front and the back of the drum, adjacent to one of the baffles. If using a temperature indicator label to test a top-loading clothes washer, adhere the label along the interior surface of the clothes container drum, on the vertical portion of the sidewall, as close to the bottom of the container as possible.
3.3.1 Maximum 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.
3.3.2 Minimum 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.
3.3.3 Average test load and water fill. For clothes washers with an automatic 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.
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 or test load size as specified in 3.4.1 through 3.4.3 for a 135 °F (57.2 °C)) wash, if available, or for the hottest selection less than 135 °F (57.2 °C)).
3.4.1 Maximum 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.
3.4.2 Minimum 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.
3.4.3 Average test load and water fill. For clothes washers with an automatic 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.
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 3.5.1 through 3.5.3 for the applicable warm water wash temperature(s). 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 the 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 the results from all tests conducted pursuant to this section.
3.5.1 Maximum 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.
3.5.2 Minimum 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.
3.5.3 Average test load and water fill. For clothes washers with an automatic 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.
3.6 “Cold Wash” (Minimum Wash Temperature Selection). Water and electrical energy consumption shall be measured for each water fill level 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 1.20 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.
3.6.1 Maximum 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.
3.6.2 Minimum 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.
3.6.3 Average test load and water fill. For clothes washers with an automatic 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 Rinse. Tests in sections 3.7.1 and 3.7.2 shall be conducted with the hottest rinse temperature available. If multiple wash temperatures are available with the hottest rinse temperature, any “warm wash” temperature may be selected to conduct the tests.
3.7.1 For the rinse only, measure the amount of hot water consumed by the clothes washer including all deep and spray rinses, for the maximum (RX), minimum (Rn), and, if required by section 3.5.3 of this appendix, average (Ra) test load sizes or water fill levels.
3.7.2 Measure the amount of electrical energy consumed by the clothes washer to heat the rinse water only, including all deep and spray rinses, for the maximum (ERX), minimum (ERn), and, if required by section 3.5.3 of this appendix, average (ERa) test load sizes or water fill levels.
3.8 Remaining Moisture Content:
3.8.1 The wash temperature will be the same as the rinse temperature for all testing. Use the maximum test load as defined in Table 5.1 and section 3.1 for testing.
3.8.2 For clothes washers with cold rinse only:
3.8.2.1 Record the actual ‘bone dry’ weight of the test load (WImax), then place the test load in the clothes washer.
3.8.2.2 Set water level selector to maximum fill.
3.8.2.3 Run the energy test cycle.
3.8.2.4 Record the weight of the test load immediately after completion of the energy test cycle (WCmax).
3.8.2.5 Calculate the remaining moisture content of the maximum test load, RMCMAX, expressed as a percentage and defined as:
RMCmax = ((WCmax−WImax)/WImax) × 100%3.8.3 For clothes washers with cold and warm rinse options:
3.8.3.1 Complete steps 3.8.2.1 through 3.8.2.4 for cold rinse. Calculate the remaining moisture content of the maximum test load for cold rinse, RMCCOLD, expressed as a percentage and defined as:
RMCCOLD = ((WCmax−WImax)/WImax) × 100%3.8.3.2 Complete steps 3.8.2.1 through 3.8.2.4 for warm rinse. Calculate the remaining moisture content of the maximum test load for warm rinse, RMCWARM, expressed as a percentage and defined as:
RMCWARM = ((WCmax − WImax)/WImax) × 100%3.8.3.3 Calculate the remaining moisture content of the maximum test load, RMCmax, expressed as a percentage and defined as:
RMCmax = RMCCOLD × (1-TUFr) + RMCWARM × (TUFr). where: TUFr is the temperature use factor for warm rinse as defined in Table 4.1.1.3.8.4 Clothes washers which have options that result in different RMC values, such as multiple selection of spin speeds or spin times, 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 3.8.2 or 3.8.3. The calculated RMCmax extraction and RMCmin extraction at the maximum and minimum settings, respectively, shall be combined as follows and the final RMC to be used in section 4.3 shall be:
RMC = 0.75 × RMCmax extraction + 0.25 × RMCmin extraction3.8.5 The procedure for calculating RMC as defined in section 3.8.2.5, 3.8.3.3., or 3.8.4 of this appendix may be replicated twice in its entirety, for a total of three independent RMC measurements. If three replications of the RMC measurement are performed, use the average of the three RMC measurements as the final RMC in section 4.3 of this appendix.
4. Calculation of Derived Results From Test Measurements4.1 Hot water and machine electrical energy consumption of clothes washers.
4.1.1 Per-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. 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] + [Hcx × TUFc] + [Rx × TUFr] (b) Vha = [Hma × TUFm] + [Hha × TUFh] + [Hwa × TUFw] + [Hca × TUFc] + [Ra × TUFr] (c) Vhn = [Hmn × TUFm] + [Hhn × TUFh] + [Hwn × TUFw] + [Hcn × TUFc] + [Rn × TUFr] 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. 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. 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. 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. Rx, Ra, and Rn are the reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the warm rinse cycle and the appropriate test loads as defined in section 2.8. TUFm, TUFh, TUFw, TUFc, and TUFr are temperature use factors for extra hot wash, hot wash, warm wash, cold wash, and warm rinse temperature selections, respectively, and are as defined in Table 4.1.1.Table 4.1.1 - Temperature Use Factors
| Max Wash Temp Available | ≤135 °F | ≤135 °F | ≤135 °F | >135 °F | >135 °F |
| (57.2 °C) | (57.2 °C) | (57.2 °C) | (57.2 °C) | (57.2 °C) | |
| No. Wash Temp Selections | Single | 2 Temps | >2 Temps | 3 Temps | >3 Temps |
| TUFm (extra hot) | NA | NA | NA | 0.14 | 0.05 |
| TUFh (hot) | NA | 0.63 | 0.14 | NA | 0.09 |
| TUFw (warm) | NA | NA | 0.49 | 0.49 | 0.49 |
| TUFc (cold) | 1.00 | 0.37 | 0.37 | 0.37 | 0.37 |
| TUFr (warm rinse) | 0.27 | 0.27 | 0.27 | 0.27 | 0.27 |
4.1.2 Total 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: T = Temperature rise = 75 °F (41.7 °C). K = Water specific heat in kilowatt-hours per gallon degree F = 0.00240 (0.00114 kWh/L-°C). Vhx Vha, and Vhn, are as defined in 4.1.1.4.1.3 Total 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] + [HEmn × Fmin] where: HEmax, HEavg, and HEmin are as defined in 4.1.2. Fmax, Favg, and Fmin are the load usage factors for the maximum, average, and minimum test loads based on the size and type of control system on the washer being tested. The values are as shown in table 4.1.3.Table 4.1.3 - Load Usage Factors
| Load usage factor | Water fill control system | |
|---|---|---|
| Manual | Automatic | |
| Fmax = | 0.72 1 | 0.12 2 |
| Favg = | 0.74 2 | |
| Fmin = | 0.28 1 | 0.14 2 |
1Reference 3.2.3.3.
2Reference 3.2.3.2.
4.1.4 Total per-cycle hot water energy consumption using gas-heated or oil-heated water, for product labeling requirements. 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 4.1.3.4.1.5 Per-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 minimum water fill level, MEmin, and the average water fill level, MEavg, expressed in kilowatt-hours per cycle and defined as:
(a)MEmax = [Emx × TUFm] + [Ehx × TUFh] + [Ewx × TUFw] + [Ecx × TUFc] + [ERx × TUFr] (b) MEavg = [Ema × TUFm] + [Eha × TUFh] + [Ewa × TUFw] + [Eca × TUFc] + [ERa × TUFr] (c) MEmin = [Emn × TUFm] + [Ehn × TUFh] + [Ewn × TUFw] + [Ecn × xTUFc] + [ERn × TUFr] 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. 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. ERx, ERa, ERn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the warm rinse cycle per definitions in 3.7.2 of this appendix. TUFm, TUFh, TUFw, TUFc, and TUFr are as defined in Table 4.1.1.4.1.6 Total weighted per-cycle machine electrical energy consumption. Calculate the total per cycle load size weighted 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 4.1.5. Fmax, Favg, and Fmin are as defined in Table 4.1.3.4.1.7 Total per-cycle energy consumption when electrically heated water is used. Calculate for the energy test cycle the total per-cycle energy consumption, ETE, using electrical heated water, expressed in kilowatt-hours per cycle and defined as:
ETE = HET + MET where: MET = As defined in 4.1.6. HET = As defined in 4.1.3.4.2 Water consumption of clothes washers.
4.2.1 Per-cycle water consumption. Calculate the maximum, average, and minimum total water consumption, expressed in gallons per cycle (or liters per cycle), for the cold wash/cold rinse cycle and defined as:
Qmax = [Hcx + Ccx] Qavg = [Hca + Cca] Qmin = [Hcn + Ccn] where: Hcx, Ccx, Hca, Cca, Hcn, and Ccn are as defined in 3.6.4.2.2 Total weighted per-cycle water consumption. Calculate the total weighted per cycle consumption, QT, expressed in gallons per cycle (or liters per cycle) and defined as:
QT = [Qmax × Fmax] + [Qavg × Favg] + [Qmin × Fmin] where: Qmax, Qavg, and Qmin are as defined in 4.2.1. Fmax, Favg, and Fmin are as defined in table 4.1.3.4.2.3 Water factor. Calculate the water factor, WF, expressed in gallons per cycle per cubic foot (or liters per cycle per liter), as:
WF = QT/C where: QT = As defined in section 4.2.2 of this appendix. C = As defined in section 3.1.6 of this appendix.4.3 Per-cycle energy consumption for removal of moisture from test load. Calculate the per-cycle energy required to remove the moisture of the test load, DE, expressed in kilowatt-hours per cycle and defined as
DE = (LAF) × (Maximum test load weight) × (RMC - 4%) × (DEF) × (DUF) where: LAF = Load adjustment factor = 0.52. Test load weight = As required in 3.8.1, expressed in lbs/cycle. RMC = As defined in 3.8.2.5, 3.8.3.3 or 3.8.4. 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 = 0.84.4.4 Modified 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 3.1.6 of this appendix. ETE = As defined in section 4.1.7 of this appendix. DE = As defined in section 4.3 of this appendix. 5. Test LoadsTable 5.1 - Test Load Sizes
| Container volume | Minimum load | Maximum load | Average load | ||||
|---|---|---|---|---|---|---|---|
| cu. ft. ≥< |
liter ≥< |
lb | kg | lb | kg | lb | 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 |
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).
6.1 Waivers and Field Testing for Non-conventional 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. For these and other clothes washers that have controls or systems such that the DOE test procedures yield results that are so unrepresentative of the clothes washer's true energy consumption characteristics as to provide materially inaccurate comparative data, 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 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.
6.2 Nonconventional 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. 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.
6.3 Adaptive water fill control system field test. Section 3.2.3.1 defines the test method for measuring energy consumption for clothes washers which incorporate control systems having both adaptive and alternate cycle selections. Energy consumption calculated by the method defined in section 3.2.3.1 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 totally 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 these test procedures 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 cyclesThe 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)Energy consumption (HET, MET, and DE) and water consumption (QT), values calculated in section 4 for the manual and adaptive modes, should be combined using Pa and Pm as the weighting factors.
[62 FR 45508, Aug. 27, 1997; 63 FR 16669, Apr. 6, 1998, as amended at 66 FR 3330, Jan. 12, 2001; 68 FR 62204, Oct. 31, 2003; 69 FR 18803, Apr. 9, 2004; 77 FR 13937, Mar. 7, 2012; 77 FR 20292, Apr. 4, 2012; 80 FR 46760, Aug. 5, 2015; 80 FR 62442, Oct. 16, 2015]