The clothes container capacity is calculated as follows: C=W/d. C=Capacity in cubic feet. W=Mass of water in pounds. d=Density of water at the measured temperature in pounds per cubic foot (at 140° F). 3.1.2 Front-loader clothes washer. Position the tub and shaft axis vertically with the shaft downward. Line the clothes container with 2 mil plastic sheet or use some other method to prevent the water from entering the outer tub container. The agitator shall be in place. Fill the clothes container with water to its uppermost edge. (This filling procedure may require overriding of the fill level control, or manually completing the fill to the top of the container after the fill sensor terminates the fill at maximum level.) Record the weight of the machine before filling it with water and then after filling it with water. The clothes container capacity is calculate as follows: C=W/d C=Capacity in cubic feet. W=Mass of water in pounds. d=Density of water at the measured temperature in pounds per cubic foot (at 140° F). 3.2 Test cycle. Establish the testing conditions set forth in 2 of this Appendix. 3.2.1 Per-cycle electrical energy consumption. Set the water level selector at a maximum fill and insert the appropriate test load, if applicable. Activate the normal cycle of the clothes washer and also any sudssaver switch. 3.2.1.1 Measure the electrical energy consumption of the clothes washer for a complete normal cycle. 3.2.2 Hot water consumption for α normal cycle with the water level selector at maximum fill. 3.2.2.1 Set the water level selector at maximum fill and insert the appropriate test load, if applicable. Activate the normal cycle of the clothes washer and also any suds-saver switch. 3.2.2.2 For automatic clothes washers set the wash/rinse temperature selector to the hottest setting available (hot/warm). For semi-automatic clothes washers open the hot water faucet valve completely and close the cold water faucet valve to achieve the hottest setting (hot/hot). 3.2.2.3 Measure the number of gallons of hot water used to fill the tub for the wash cycle. 3.2.2.4 Measure the total number of gallons of hot water used for all deep rinse cycles. 3.2.2.5 Measure the total gallons of hot water used for all spray rinse cycles. 3.2.2.7 Set the suds-saver switch to activate the sud-return. Repeat 3.2.2.2 to 3.2.2.5 for a warm/cold temperature setting. 3.2.3 Hot water consumption for a normal cycle with the water level selector at minimum fill. Set the water level selector at minimum fill and insert the appropriate test load, if applicable. Activate the normal cycle of the clothes washer and also any sudssaver switch. Repeat 3.2.2.2 through 3.2.2.7. 3.2.4 Hot water consumption for clothes washers that incorporate a partial fill during the rinse cycle. Where the procedures in 3.2.2 and 3.2.3 cannot be used for clothes washers that incorporate a partial fill during the rinse cycle, activate any sudssaver switch and operate the cloths washer for the complete normal cycle at both the maximum water fill level and the minimum water fill level for each of the wash/rinse temperature selections available that use hot water. Measure the total hot water consumed during the complete normal cycle. 3.3 Data recording. Record for each test cycle in 3.2. 3.3.1 Total the kilowatt-hours of electrical energy, ME, consumed during the test to operate the clothes washer in 3.2.1. 3.3.2 Total the hot water measured at maximum fill level for each wash/rinse temperature selection, V1, excluding any fresh make-up water required to complete the fill during a suds-return cycle. 3.3.3 Total the hot water measured at minimum fill level for each wash/rinse temperature selection, V,, excluding any fresh make-up water required to complete the fill during a suds-return cycle. 3.3.4 Total the hot water measured at maximum fill for the suds-return cycle, SH. 3.3.5 Total the hot water measured at minimum fill for suds-return cycle, SL. 4. CALCULATION OF DERIVED RESULTS FROM TEST MEASUREMENTS 4.1 Per-cycle temperature-weighted hot water consumption for maximum and mini 53-027 0-85--7 mum water fill levels. Calculate for the cycle under test the per-cycle temperatureweighted hot water consumption for the maximum water fill level, V, max, and for the minimum water fill level, Vmin, expressed in gallons per cycle and defined as: Vmax=X1 &i=1" [V1×TUF}]+X2[TUFw×SH] where V=Reported hot water consumption in gallons per-cycle at maximum fill for each wash/cycle temperature selection, as provided in 3.2.2. TUF Applicable temperature use factor corresponding to wash/rinse temperature selection as shown in 5 or 6. n=Number of wash/rinse temperature selections available to the user for the clothes washer under test. TUF-Temperature use factor for warm wash setting. For clothes washers equipped with sudssaver feature: X1=Frequency of use without suds-saver feature=.86. X, Frequency of use with suds-saver feature=.14. For clothes washers not equipped with suds-saver feature: Fmax=Usage fill factor=0.72. 4.4 Per-cycle machine electrical energy consumption. The value recorded in 3.3.1 is the per-cycle machine electrical energy consumption, ME, expressed in kilowatt-hours per cycle. 4.5 Per-cycle water energy consumption using gas-heated or oil-heated water. Calculate for the normal cycle the per-cycle water consumption, Erc, using gas-heated or oilheated water, expressed in Btu per cycle and defined as; 5. APPLICABLE TEMPERATURE USE FACTORS FOR DETERMINING HOT WATER USAGE FOR VARIOUS WASH/RINSE TEMPERATURE SELECTIONS FOR ALL AUTOMATIC CLOTHES WASHERS 5.1 Five temperature selection (n=5). APPENDIX K1 TO SUBPART B OF PART 430-UNIFORM TEST METHOD FOR MEASURING THE ENERGY CONSUMPTION OF CENTRAL SYSTEM HUMIDIFIERS 1. DEFINITIONS 1.1 "ARI" means the Air-Conditioning and Refrigeration Institute. 1.2 "ARI 610-74" means the test standard published by the ARI, titled "Standard for Central System Humidifiers," 1974, and designated as ARI 610-74. 1.3 "By-pass humidifier" means a central system humidifier in which the air for humidification is taken from the heated air of the furnace plenum and drawn through a wetted element by the pressure differential of the furnace blower system. 1.4 "Humidification rate" means a measure of the ability of a humidifier to add moisture to its surrounding atmosphere expressed as the number of gallons of water evaporated per 24 hours of continuous operation. 1.5 "Seasonal performance factor" means the ratio of the seasonal energy output of a heating system delivered to the conditioned space, in Btu's divided by the seasonal energy input to the heating system, in Btu's. 1.6 "Humidistat" means a device which requires no user intervention and which is used to enable a humidifier to maintain a constant relative humidity of the conditioned air. 2. TESTING CONDITIONS 2.1 Installation. Install the humidifier according to manufacturer's instructions and in accordance with section A4 of ARI 610-74. In the event of a conflict between the manufacturer's instructions and ARI 610-74, the provision of ARI 610-74 shall control. 2.2 Energy flow instrumentation. Install energy flow instrumentation or other instrumentation as appropriate, in accordance with section A3 of ARI 610-74. A wattmeter shall be installed in the electrical circuit 3. TESTING AND MEASUREMENTS 3.1 Humidification rate. Determine the humidification rate, Hm, of the humidifier under test, in gallons per day, according to the methods and calculations specified in sections A5 and A6 of ARI 610-74. 3.2 Input power. Measure the input power (P) to the humidifier, in watts, when the humidifier is operating under full load conditions. 3.3 By-pass air flow rate determination for by-pass humidifiers. The air flow rate through the by-pass humidifier (V) shall be measured in cubic feet per minute using air flow nozzles in accordance with Figure Al described in paragraph A3.3.1 and static pressure taps in accordance with paragraph A3.3.2 of ARI 610-74. The humidifier shall be mounted to a plenum attached to the outlet of a fan capable of delivering the required air flow for the conditions of the test in accordance with 6 of this Appendix. The by-pass duct of the humidifier shall be connected to the inlet of the air measuring duct (AMD). The temperature of the air shall be room temperature, 70° F ±10° F, 30 percent relative humidity, and the static pressure in the duct between the fan and humidifier shall be adjusted to 0.2 in. water differential. The pressure drop across the nozzle shall be recorded and the air volume calculated using the equations of A6.1.1 and A6.1.2 of ARI 610-74. 3.4 Temperature measurement. The temperature of the water entering the humidifier shall be maintained at 60° F ±2° F. The waste water temperature from the humidifier shall be measured and recorded. No less than five sets of readings shall be taken. 4. CALCULATION OF DERIVED RESULTS FROM TEST MEASUREMENTS 4.1 Average annual electric furnace or electric resistance heating energy consumption. Calculate the average annual electric furnace or electric resistance heating energy consumption, EF-E, expressed in kilowatthours per year, to vaporize water to maintain a room relative humidity of 30 percent at a room temperature of 70° F, and defined as: =average annual energy output of the humidifier in terms of heat of vaporization, in Btu's, =[NXHm(8.34×1060)/24], where N=700 hours per year for units with humidistats, or 1600 hours per year for units without humidistats, the representative average-use cycle of humidifier operation Hm=humidification rate determined in accordance with 3.1 of this Appendix, in gallons per day 8.34 conversion factor to convert gallons of water to pounds of water 1060 heat of vaporization of water in Btu's per pound (Based on a water temperature of 60° F). 24-conversion factor to convert days to hours SPFR=1.0, seasonal performance factor of electric furnace or electric resistance heating dimensionless EF-E (Qo+Qw-3412Es/SPFE) (1/3412), where |