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(continued)
3.3.12 Record the heating value, Hp, as determined in Section 2.2.2.3 for the propane supply.
3.3.13 Record the electrical input energy and power input, EM and PM, for the microwave oven test; the initial and final temperature, T1 and T2, of the test water load; the mass of the test container before filling with the test water load and the mass of the test water load, MC and MW respectively; and the measured room temperature, T0; as determined in Section 3.2.3.
4. Calculation of Derived Results From Test Measurements
4.1 Conventional oven.
4.1.1 Test energy consumption. For a conventional oven with a thermostat which operates by cycling on and off, calculate the test energy consumption, EO, expressed in watt-hours (kJ) for electric ovens and in Btu's (kJ) for gas ovens, and defined as:
for electric ovens, and,
For gas ovens
Where:
H = either Hn or Hp, the heating value of the gas used in the test as specified in Section 2.2.2.2 and Section 2.2.2.3, expressed in Btu's per standard cubic foot (kJ/L).
TO = 234 °F (130 °C) plus the initial test block temperature.
and,
Where:
TA = block temperature in °F (°C) at the end of the last “ON” period of the conventional oven before the test block reaches TO.
TB = block temperature in °F (°C) at the beginning of the “ON” period following the measurement of TA.
TC = block temperature in °F (°C) at the end of the “ON” period which starts with TB.
TD = block temperature in °F (°C) at the beginning of the “ON” period which follows the measurement of TC.
EA = electric energy consumed in Wh (kJ) at the end of the last “ON” period before the test block reaches TO.
EB = electric energy consumed in Wh (kJ) at the beginning of the “ON” period following the measurement of TA.
EC = electric energy consumed in Wh (kJ) at the end of the “ON” period which starts with TB.
ED = electric energy consumed in Wh (kJ) at the beginning of the “ON” period which follows the measurement of TC.
VA = volume of gas consumed in standard cubic feet (L) at the end of the last “ON” period before the test block reaches TO.
VB = volume of gas consumed in standard cubic feet (L) at the beginning of the “ON” period following the measurement of TA.
VC = volume of gas consumed in standard cubic feet (L) at the end of the “ON” period which starts with TB.
VD = volume of gas consumed in standard cubic feet (L) at the beginning of the “ON” period which follows the measurement of TC.
The energy consumed by a continuously operating clock that cannot be disconnected during the test may be subtracted from the oven test energy to obtain the oven test energy consumption, EO.
4.1.1.1 Average test energy consumption. If the conventional oven can be operated with or without forced convection, determine the average test energy consumption, EO and EIO, in watt-hours (kJ) for electric ovens and Btu's (kJ) for gas ovens using the following equations:
Where:
(EO)1=test energy consumption using the forced convection mode in watt-hours (kJ) for electric ovens and in Btu's (kJ) for gas ovens as measured in Section 3.2.1.1.
(EO)2=test energy consumption without using the forced convection mode in watt-hours (kJ) for electric ovens and in Btu's (kJ) for gas ovens as measured in Section 3.2.1.1.
(EIO)1=electrical energy consumption in watt-hours (kJ) of a gas oven in forced convection mode as measured in Section 3.2.1.1. (EIO)2=electrical energy consumption in watt-hours (kJ) of a gas oven without using the forced convection mode as measured in Section 3.2.1.1.
The energy consumed by a continuously operating clock that cannot be disconnected during the test may be subtracted from the oven test energy to obtain the average test energy consumption EO and EIO.
4.1.2 Conventional oven annual energy consumption.
4.1.2.1. Annual cooking energy consumption.
4.1.2.1.1. Annual primary energy consumption. Calculate the annual primary energy consumption for cooking, ECO, expressed in kilowatt-hours (kJ) per year for electric ovens and in Btu's (kJ) per year for gas ovens, and defined as:
Where:
E O=test energy consumption as measured in Section 3.2.1 or as calculated in Section 4.1.1 or Section 4.1.1.1.
K e=3.412 Btu/Wh (3.6 kJ/Wh,) conversion factor of watt-hours to Btu's.
O O=29.3 kWh (105,480 kJ) per year, annual useful cooking energy output of conventional electric oven.
W 1=measured weight of test block in pounds (kg).
C p=0.23 Btu/lb-°F (0.96 kJ/kg ÷ °C), specific heat of test block.
T S=234 °F (130 °C), temperature rise of test block.
Where:
EO=test energy consumption as measured in Section 3.2.1. or as calculated in Section 4.1.1 or Section 4.1.1.1.
OO=88.8 kBtu (93,684 kJ) per year, annual useful cooking energy output of conventional gas oven.
W1, Cp and TS are the same as defined above.
4.1.2.1.2 Annual secondary energy consumption for cooking of gas ovens. Calculate the annual secondary energy consumption for cooking, ESO, expressed in kilowatt-hours (kJ) per year and defined as:
Where:
EIO=electrical test energy consumption as measured in Section 3.2.1 or as calculated in Section 4.1.1.1.
OO=29.3 kWh (105,480 kJ) per year, annual useful cooking energy output.
Ke, W1, Cp, and TS are as defined in Section 4.1.2.1.1.
4.1.2.2 Annual energy consumption of any continuously burning pilot lights. Calculate the annual energy consumption of any continuously burning pilot lights, EPO, expressed in Btu's (kJ) per year and defined as:
EPO=QOP×H×(A-B),
or,
Where:
QOP=pilot gas flow rate in standard cubic feet per hour (L/h), as measured in Section 3.2.1.3.
VOP=standard cubic feet (L) of gas consumed by any continuously burning pilot lights, as measured in Section 3.2.1.3.
tOP=elapsed test time in hours for any continuously burning pilot lights tested, as measured in Section 3.2.1.3.
H=Hn or Hp, the heating value of the gas used in the test as specified in Section 2.2.2.2 and Section 2.2.2.3 in Btu's per standard cubic foot (kJ/L).
A=8,760, number of hours in a year.
B=300, number of hours per year any continuously burning pilot lights contribute to the heating of an oven for cooking food.
4.1.2.3 Annual conventional oven self-cleaning energy.
4.1.2.3.1 Annual primary energy consumption. Calculate the annual primary energy consumption for conventional oven self-cleaning operations, ESC, expressed in kilowatt-hours (kJ) per year for electric ovens and in Btu's (kJ) for gas ovens, and defined as:
ESC=ES×Se×K, for electric ovens,
Where:
ES=energy consumption in watt-hours, as measured in Section 3.2.1.2.
Se=4, average number of times a self-cleaning operation of a conventional electric oven is used per year.
K=0.001 kWh/Wh conversion factor for watt-hours to kilowatt-hours.
or
ESC=VS×H×Sg, for gas ovens,
Where:
VS=gas consumption in standard cubic feet (L), as measured in Section 3.2.1.2.
H=Hn or Hp, the heating value of the gas used in the test as specified in Section 2.2.2.2 and Section 2.2.2.3 in Btu's per standard cubic foot (kJ/L).
Sg=4, average number of times a self-cleaning operation of a conventional gas oven is used per year.
The energy consumed by a continuously operating clock that cannot be disconnected during the self-cleaning test procedure may be subtracted from the test energy to obtain the test energy consumption, ESC.
4.1.2.3.2 Annual secondary energy consumption for self-cleaning operation of gas ovens. Calculate the annual secondary energy consumption for self-cleaning operations of a gas oven, ESS, expressed in kilowatt-hours (kJ) per year and defined as:
ESS=EIS × Sg × K,
Where:
EIS=electrical energy consumed during the self-cleaning operation of a conventional gas oven, as measured in Section 3.2.1.2.
Sg=4, average number of times a self-cleaning operation of a conventional gas oven is used per year.
K=0.001 kWh/Wh conversion factor for watt-hours to kilowatt-hours.
4.1.2.4 Annual clock energy consumption. Calculate the annual energy consumption of any constantly operating electric clock, ECL, expressed in kilowatt-hours (kJ) per year and defined as:
ECL = PCL × A × K,
Where:
PCL=power rating of clock which is on continuously, in watts, as measured in Section 3.2.1.4.
A=8,760, number of hours in a year.
K=0.001 kWh/Wh conversion factor for watt-hours to kilowatt-hours.
4.1.2.5 Total annual energy consumption of a single conventional oven.
4.1.2.5.1 Conventional electric oven energy consumption. Calculate the total annual energy consumption of a conventional electric oven, EAO, expressed in kilowatt-hours (kJ) per year and defined as:
EAO=ECO+ESC+ECL,
Where:
ECO=annual primary cooking energy consumption as determined in Section 4.1.2.1.1.
ESC=annual primary self-cleaning energy consumption as determined in Section 4.1.2.3.1.
ECL=annual clock energy consumption as determined in Section 4.1.2.4.
4.1.2.5.2 Conventional gas oven energy consumption. Calculate the total annual gas energy consumption of a conventional gas oven, EAOG, expressed in Btu's (kJ) per year and defined as:
EAOG=ECO+ESC+EPO,
Where:
ECO=annual primary cooking energy consumption as determined in Section 4.1.2.1.1.
EPO=annual pilot light energy consumption as determined in Section 4.1.2.2.
ESC=annual primary self-cleaning energy consumption as determined in Section 4.1.2.3.1.
If the conventional gas oven uses electrical energy, calculate the total annual electrical energy consumption, EAOE, expressed in kilowatt-hours (kJ) per year and defined as:
EAOE=ESO+ESS+ECL,
Where:
ESO=annual secondary cooking energy consumption as determined in Section 4.1.2.1.2.
ESS=annual secondary self-cleaning energy consumption as determined in Section 4.1.2.3.2.
ECL=annual clock energy consumption as determined in Section 4.1.2.4.
4.1.2.6. Total annual energy consumption of multiple conventional ovens. If the cooking appliance includes more than one conventional oven, calculate the total annual energy consumption of the conventional ovens using the following equations:
4.1.2.6.1 Conventional electric oven energy consumption. Calculate the total annual energy consumption, ETO, in kilowatt-hours (kJ) per year and defined as:
ETO = EACO + EASC + ECL,
Where:
is the average annual primary energy consumption for cooking,
and where:
n = number of conventional ovens in the basic model.
ECO = annual primary energy consumption for cooking as determined in Section 4.1.2.1.1.
average annual self-cleaning energy consumption,
Where:
n = number of self-cleaning conventional ovens in the basic model.
ESC = annual primary self-cleaning energy consumption as determined according to Section 4.1.2.3.1.
ECL = clock energy consumption as determined according to Section 4.1.2.4.
4.1.2.6.2 Conventional gas oven energy consumption. Calculate the total annual gas energy consumption, ETOG, in Btu's (kJ) per year and defined as:
ETOG = EACO + EASC + ETPO,
Where:
EACO = average annual primary energy consumption for cooking in Btu's (kJ) per year and is calculated as:
Where:
n = number of conventional ovens in the basic model.
ECO = annual primary energy consumption for cooking as determined in Section 4.1.2.1.1.
and,
EASC = average annual self-cleaning energy consumption in Btu's (kJ) per year and is calculated as:
Where:
n = number of self-cleaning conventional ovens in the basic model.
ESC = annual primary self-cleaning energy consumption as determined according to Section 4.1.2.3.1.
total energy consumption of any pilot lights,
Where:
EPO = annual energy consumption of any continuously burning pilot lights determined according to Section 4.1.2.2.
n = number of pilot lights in the basic model.
If the oven also uses electrical energy, calculate the total annual electrical energy consumption, ETOE, in kilowatt-hours (kJ) per year and defined as:
ETOE = EASO + EAAS + ECL,
Where:
is the average annual secondary energy consumption for cooking,
Where:
n=number of conventional ovens in the basic model.
ESO=annual secondary energy consumption for cooking of gas ovens as determined in Section 4.1.2.1.2.
is the average annual secondary self-cleaning energy consumption,
Where:
n=number of self-cleaning ovens in the basic model.
ESS=annual secondary self-cleaning energy consumption of gas ovens as determined in Section 4.1.2.3.2.
ECL=annual clock energy consumption as determined in Section 4.1.2.4.
4.1.3 Conventional oven cooking efficiency.
4.1.3.1 Single conventional oven. Calculate the conventional oven cooking efficiency, EffAO, using the following equations:
For electric ovens:
and,
For gas ovens:
Where:
W1=measured weight of test block in pounds (kg).
Cp=0.23 Btu/lb-°F (0.96 kJ/kg÷ °C), specific heat of test block.
TS=234 °F (130 °C), temperature rise of test block.
EO=test energy consumption as measured in Section 3.2.1 or calculated in Section 4.1.1 or Section 4.1.1.1.
Ke=3.412 Btu/Wh (3.6 kJ/Wh), conversion factor for watt-hours to Btu's.
EIO=electrical test energy consumption according to Section 3.2.1 or as calculated in Section 4.1.1.1.
4.1.3.2 Multiple conventional ovens. If the cooking appliance includes more than one conventional oven, calculate the cooking efficiency for all of the conventional ovens in the appliance, EffTO, using the following equation:
Where:
n=number of conventional ovens in the cooking appliance.
EffAO=cooking efficiency of each oven determined according to Section 4.1.3.1.
4.1.4 Conventional oven energy factor. Calculate the energy factor, or the ratio of useful cooking energy output to the total energy input, RO, using the following equations:
For electric ovens,
Where:
OO=29.3 kWh (105,480 kJ) per year, annual useful cooking energy output.
EAO=total annual energy consumption for electric ovens as determined in Section 4.1.2.5.1.
For gas ovens:
Where:
OO=88.8 kBtu (93,684 kJ) per year, annual useful cooking energy output.
EAOG=total annual gas energy consumption for conventional gas ovens as determined in Section 4.1.2.5.2.
EAOE=total annual electrical energy consumption for conventional gas ovens as determined in Section 4.1.2.5.2.
Ke=3,412 Btu/kWh (3,600 kJ/kWh), conversion factor for kilowatt-hours to Btu's.
4.2 Conventional cooking top
4.2.1 Conventional cooking top cooking efficiency
4.2.1.1 Electric surface unit cooking efficiency. Calculate the cooking efficiency, EffSU, of the electric surface unit under test, defined as:
Where:
W=measured weight of test block, W2 or W3, expressed in pounds (kg).
Cp=0.23 Btu/lb-°F (0.96 kJ/kg÷ °C), specific heat of test block.
TSU=temperature rise of the test block: final test block temperature, TCT, as determined in Section 3.2.2, minus the initial test block temperature, TI, expressed in °F (°C) as determined in Section 2.7.5.
Ke=3.412 Btu/Wh (3.6 kJ/Wh), conversion factor of watt-hours to Btu's.
ECT=measured energy consumption, as determined according to Section 3.2.2, expressed in watt-hours (kJ).
The energy consumed by a continuously operating clock that cannot be disconnected during the cooktop test may be subtracted from the energy consumption, ECT, as determined in Section 3.2.2.
4.2.1.2 Gas surface unit cooking efficiency. Calculate the cooking efficiency, EffSU, of the gas surface unit under test, defined as:
Where:
W3=measured weight of test block as measured in Section 3.3.2, expressed in pounds (kg).
Cp and TSU are the same as defined in Section 4.2.1.1.
and,
E=[VCT - VCP×H] + (EIC×Ke),
Where:
VCT=total gas consumption in standard cubic feet (L) for the gas surface unit test as measured in Section 3.2.2.
EIC=electrical energy consumed in watt-hours (kJ) by an ignition device of a gas surface unit as measured in Section 3.2.2.
Ke=3.412 Btu/Wh (3.6 kJ/Wh), conversion factor of watt-hours to Btu's.
H=either Hn or Hp, the heating value of the gas used in the test as specified in Section 2.2.2.2 and Section 2.2.2.3, expressed in Btu's per standard cubic foot (kJ/L) of gas.
VCP=QCP×tCT, pilot consumption, in standard cubic feet (L), during unit test,
Where:
tCT=the elapsed test time as defined in Section 3.2.2.
and
(pilot flow in standard cubic feet per hour)
Where:
VCP=any pilot lights gas consumption defined in Section 3.2.2.1.
tCP=elapsed time of the cooking top pilot lights test as defined in Section 3.2.2.1.
4.2.1.3 Conventional cooking top cooking efficiency. Calculate the conventional cooking top cooking efficiency, EffCT, using the following equation:
Where:
n=number of surface units in the cooking top.
EffSU=the efficiency of each of the surface units, as determined according to Section 4.2.1.1 or Section 4.2.1.2.
4.2.2 Conventional cooking top annual energy consumption.
4.2.2.1 Conventional electric cooking top energy consumption. Calculate the annual energy consumption of an electric cooking top, ECA, in kilowatt-hours (kJ) per year, defined as:
Where:
OCT=173.1 kWh (623,160 kJ) per year, annual useful cooking energy output.
EffCT=conventional cooking top cooking efficiency as defined in Section 4.2.1.3.
4.2.2.2 Conventional gas cooking top
4.2.2.2.1 Annual cooking energy consumption. Calculate the annual energy consumption for cooking, ECC, in Btu's (kJ) per year for a gas cooking top, defined as:
Where:
OCT=527.6 kBtu (556,618 kJ) per year, annual useful cooking energy output.
EffCT=the gas cooking top efficiency as defined in Section 4.2.1.3.
4.2.2.2.2 Annual energy consumption of any continuously burning gas pilots. Calculate the annual energy consumption of any continuously burning gas pilot lights of the cooking top, EPC, in Btu's (kJ) per year, defined as:
EPC=QCP×A×H,
Where:
QCP=pilot light gas flow rate as measured in Section 3.2.2.1.
A=8,760 hours, the total number of hours in a year.
H=either Hn or Hp, the heating value of the gas used in the test as specified in Section 2.2.2.2. and Section 2.2.2.3, expressed in Btu's per standard cubic foot (kJ/L) of gas.
4.2.2.2.3 Total annual energy consumption of a conventional gas cooking top. Calculate the total annual energy consumption of a conventional gas cooking top, ECA, in Btu's (kJ) per year, defined as:
ECA=ECC + EPC,
Where:
ECC=energy consumption for cooking as determined in Section 4.2.2.2.1.
EPC=annual energy consumption of the pilot lights as determined in Section 4.2.2.2.2.
4.2.3 Conventional cooking top energy factor. Calculate the energy factor or ratio of useful cooking energy output for cooking to the total energy input, RCT, as follows:
For an electric cooking top, the energy factor is the same as the cooking efficiency as determined according to Section 4.2.1.3.
For gas cooking tops,
Where:
OCT=527.6 kBtu (556,618 kJ) per year, annual useful cooking energy output of cooking top.
ECA=total annual energy consumption of cooking top determined according to Section 4.2.2.2.3.
4.3 Combined components. The annual energy consumption of a kitchen range, e.g. a cooktop and oven combined, shall be the sum of the annual energy consumption of each of its components. The annual energy consumption for other combinations of ovens, cooktops and microwaves will also be treated as the sum of the annual energy consumption of each of its components. The energy factor of a combined component is the sum of the annual useful cooking energy output of each component divided by the sum of the total annual energy consumption of each component.
4.4 Microwave oven.
4.4.1 Microwave oven test energy output. Calculate the microwave oven test energy output, ET, in watt-hour's (kJ). The calculation is repeated two or three times as required in section 3.2.3. The average of the ET's is used for a calculation in section 4.4.3. For calculations specified in units of energy [watt-hours (kJ)], use the equation below:
Where:
MW=the measured mass of the test water load, in pounds (g).
MC=the measured mass of the test container before filling with test water load, in pounds (g).
T1=the initial test water load temperature, in °F (°C).
T2=the final test water load temperature, in °F (°C).
T0=the measured ambient room temperature, in °F (°C).
CC=0.210 Btu/lb-°F (0.88 kJ/kg · °C), specific heat of test container.
Cp=1.0 Btu/lb-°F (4.187 kJ/kg · °C), specific heat of water.
Ke=3,412 Btu/kWh (3,600 kJ/kWh) conversion factor of kilowatt-hours to Btu's.
4.4.2 Microwave oven test power output. Calculate the microwave oven test power output, PT, in watts (J/s) as specified in Section four, paragraph 12.5 of IEC 705 Amendment 2 See Section 430.22. The calculation is repeated for each test as required in section 3.2.3. The average of the two or three PT's is used for calculations in section 4.4.4. (See 10 CFR 430.22)
4.4.3 Microwave oven annual energy consumption. Calculate the microwave oven annual energy consumption, Emo, in KWh's per year, defined as:
Where:
EM=the energy consumption as defined in Section 3.2.3.
OM=79.8 kWh (287,280 kJ) per year, the microwave oven annual useful cooking energy output.
ET=the test energy as calculated in Section 4.4.1.
4.4.4 Microwave oven cooking efficiency. Calculate the microwave oven cooking efficiency, EffMO, as specified in Section four, paragraph 14 of IEC 705.
4.4.5 Microwave oven energy factor. Calculate the energy factor or the ratio of the useful cooking energy output to total energy input on a yearly basis, RMO, defined as:
Where:
OM=79.8 kWh (287,280 kJ) per year, annual useful cooking energy output.
EMO=annual total energy consumption as determined in Section 4.4.3.
[62 FR 51981, Oct. 3, 1997]
Appendix J to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes Washers
top
The provisions of this appendix J shall apply to products manufactured after April 13, 2001. The procedures and calculations in sections 3.3, 4.3, and 4.4 of this Appendix need not be performed to determine compliance with the energy conservation standards for clothes washers.
1. Definitions
1.1 Adaptive 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 J does not provide a means for determining the energy consumption of a clothes washer with an adaptive control system. Therefore, pursuant to 10 CFR 430.27, a waiver must be obtained to establish an acceptable test procedure for each such clothes washer.
1.2 Adaptive 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 and/or actions.
1.3 Bone-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.
1.4 Clothes container means the compartment within the clothes washer that holds the clothes during operation of the machine.
1.5 Compact means a clothes washer which has a clothes container capacity of less than 1.6 ft 3 (45 L).
1.6 Deep 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.
1.7 Front-loader clothes washer means a clothes washer which sequentially rotates or tumbles portions of the clothes load above the water level allowing the clothes load to fall freely back into the water. The principal axis of the clothes container is in a horizontal plane and the access to the clothes container is through the front of the machine.
1.8 Lockout means that at least one wash/rinse water temperature combination is not available in the normal cycle that is available in another cycle on the machine.
1.9 Make-up water means the amount of fresh water needed to supplement the amount of stored water pumped from the external laundry tub back into the clothes washer when the suds-return feature is activated in order to achieve the required water fill level in the clothes washer.
1.10 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 the machine electrical energy consumption, the hot water energy consumption, and the energy required for removal of the remaining moisture in the wash load.
1.11 Most energy intensive cycle means the non-normal cycle that uses the most energy for a given wash/rinse temperature combination.
1.12 Non-normal cycle means a cycle other than the normal cycle, but does not include any manually selected pre-wash, pre-soak, and extra-rinse option.
1.13 Nonwater-heating clothes washer means a clothes washer which does not have an internal water heating device to generate hot water.
1.14 Normal cycle means the cycle recommended by the manufacturer for washing cotton and/or linen clothes.
1.15 Sensor filled means a water fill control which automatically terminates the fill when the water reaches an appropriate level in the tub.
1.16 Spray rinse cycle means a rinse cycle in which water is sprayed onto the clothes load for a definite period of time without maintaining any specific water level in the clothes container.
1.17 Standard means a clothes washer which has a clothes container capacity of 1.6 ft 3 (45 L) or greater.
1.18 Suds-return means a feature or option on a clothes washer which causes the stored wash water obtained by utilizing the suds-saver feature to be pumped from the external laundry tub back into the clothes washer.
1.19 Suds-saver means a feature or option on a clothes washer which allows the user to store used wash water in an external laundry tub for use with subsequent wash loads.
1.20 Temperature use factor means the percentage of the total number of washes a user would wash with a particular wash/rinse temperature setting.
1.21 Thermostatically controlled water valves means clothes washer controls that have the ability to sense and adjust the hot and cold supply water.
1.22 Time filled means a water fill control which uses a combination of water flow controls in conjunction with time to terminate the water fill cycle.
1.23 Top-loader-horizontal-axis clothes washer means a clothes washer which: rotates or tumbles portions of the clothes load above the water level allowing the clothes load to fall freely back into the water with the principal axis in a horizontal plane and has access to the clothes container through the top of the clothes washer.
1.24 Top-loader-vertical-axis clothes washer means a clothes washer that: flexes and oscillates the submerged clothes load through the water by means of mechanical agitation or other movement; has a clothes container with the principal axis in a vertical plane; and has access to the clothes container through the top of the clothes washer.
1.25 Water consumption factor means the quotient of the total weighted per-cycle water consumption divided by the capacity of the clothes washer.
1.26 Water-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
2.1 Installation. Install the clothes washer in accordance with manufacturer's instructions.
2.2 Electrical energy supply. 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 as specified by the manufacturer. If the clothes washer has a dual voltage conversion capability, conduct the test at the highest voltage specified by the manufacturer.
2.3 Supply water. For nonwater-heating clothes washers not equipped with thermostatically controlled water valves, the temperature of the hot and cold water supply shall be maintained at 100 °F±10 °F (37.8 °C±5.5 °C). For nonwater-heating clothes washers equipped with thermostatically controlled water valves, the temperature of the hot water supply shall be maintained at 140 °F±5 °F (60.0 °C±2.8 °C) and the cold water supply shall be maintained at 60 °F±5 °F (15.6 °C±2.8 °C). For water-heating clothes washers, the temperature of the hot water supply shall be maintained at 140 °F±5 °F (60.0 °C±2.8 °C) and the cold water supply shall not exceed 60 °F (15.6 °C). Water meters shall be installed in both the hot and cold water lines to measure water consumption.
2.3.1 Supply water requirements for water and energy consumption testing. For nonwater-heating clothes washers not equipped with thermostatically controlled water valves, the temperature of the hot and cold water supply shall be maintained at 100° ±10 °F (37.8 °C ±5.5 °C). For nonwater-heating clothes washers equipped with thermostatically controlled water valves, the temperature of the hot water supply shall be maintained at 140 °F ±5 °F (60.0 °C ±2.8 °C) and the cold water supply shall be maintained at 60 °F ±5F° (15.6 °C ±2.8 °C). For water-heating clothes washers, the temperature of the hot water supply shall be maintained at 140 °F ±5 °F (60.0 °C ±2.8 °C) and the cold water supply shall not exceed 60 °F (15.6 °C). Water meters shall be installed in both the hot and cold water lines to measure water consumption.
2.3.2 Supply water requirements for remaining moisture content testing. For nonwater-heating clothes washers not equipped with thermostatically controlled water valves, the temperature of the hot water supply shall be maintained at 140 °F ±5 °F and the cold water supply shall be maintained at 60 °F ±5 °F. All other clothes washers shall be connected to water supply temperatures as stated in 2.3.1 of this appendix.
2.4 Water pressure. The static water pressure at the hot and cold water inlet connections of the machine shall be maintained during the test at 35 pounds per square inch gauge (psig)±2.5 psig (241.3 kPa±17.2 kPa). The static water pressure for a single water inlet connection shall be maintained during the test at 35 psig±2.5 psig (241.3 kPa±17.2 kPa). Water pressure gauges shall be installed in both the hot and cold water lines to measure water pressure.
2.5 Instrumentation. Perform all test measurements using the following instruments, as appropriate:
2.5.1 Weighing scales.
2.5.1.1 Weighing scale for test cloth. The scale shall have a resolution no larger than 0.2 oz (5.7 g) and a maximum error no greater than 0.3 percent of the measured value.
2.5.1.2 Weighing scale for clothes container capacity measurements. 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.
2.5.2 Watt-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).
2.5.3 Temperature measuring device. The device shall have an error no greater than ±1 °F (±0.6 °C) over the range being measured.
2.5.4 Water 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 all water flow rates from 1 gal/min (3.8 L/min) to 5 gal/min (18.9 L/min).
2.5.5 Water pressure gauge. The water pressure gauge shall have a resolution no larger than 1 psig (6.9 kPa) and shall have an error no greater than 5 percent of any measured value over the range of 32.5 psig (224.1 kPa) to 37.5 psig (258.6 kPa).
2.6 Test cloths.
2.6.1 Energy test cloth. The energy test cloth shall be clean and consist of the following:
2.6.1.1 Pure finished bleached cloth, made with a momie or granite weave, which is 50 percent cotton and 50 percent polyester and weighs 5.75 oz/yd 2 (195.0 g/m 2 ) and has 65 ends on the warp and 57 picks on the fill.
2.6.1.2 Cloth material that is 24 in by 36 in (61.0 cm by 91.4 cm) and has been hemmed to 22 in by 34 in (55.9 cm by 86.4 cm) before washing. The maximum shrinkage after five washes shall not be more than four percent on the length and width.
2.6.1.3 The number of test runs on the same energy test cloth shall not exceed 60 test runs. 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 the clothes washers.
2.6.2 Energy Stuffer Cloth. The energy stuffer cloths shall be made from energy test cloth material and shall consist of pieces of material that are 12 inches by 12 inches (30.5 cm by 30.5 cm) and have been hemmed to 10 inches by 10 inches (25.4 cm by 25.4 cm) before washing. The maximum shrinkage after five washes shall not be more than four percent on the length and width. The number of test runs on the same energy suffer cloth shall not exceed 60 test runs. 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 the clothes washers.
2.7 Composition of test loads.
2.7.1 Seven pound test load. The seven pound test load shall consist of bone-dry energy test cloths which weigh 7 lbs ±0.07 lbs (3.18 kg ±0.03 kg). Adjustments to the test load to achieve the proper weight can be made by the use of energy stuffer cloths.
2.7.2 Three pound test load. The three pound test load shall consist of bone-dry energy test cloths which weigh 3 lbs ±0.03 lbs (1.36 kg ±0.014 kg). Adjustments to the test load to achieve the proper weight can be made by the use of energy stuffer cloths.
2.8 Use of test loads.
2.8.1 For a standard size clothes washer, a seven pound load, as described in section 2.7.1, shall be used to test the maximum water fill and a three pound test load, as described in section 2.7.2, shall be used to test the minimum water fill.
2.8.2 For a compact size clothes washer, a three pound test load as described in section 2.7.2 shall be used to test the maximum and minimum water fill levels.
2.8.3 A vertical-axis clothes washer without adaptive water fill control system also shall be tested without a test load for purposes of calculating the energy factor.
2.8.4 The test load sizes to be used to measure remaining moisture content (RMC) are specified in section 3.3.2.
2.8.5 Load the energy test cloths by grasping them in the center, shaking them to hang loosely and then dropping them into the clothes container prior to activating the clothes washer.
2.9 Preconditioning. 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.
2.10 Wash time (period of agitation or tumble) setting. If the maximum available wash time in the normal cycle is greater than 9.75 minutes, the wash time shall be not less than 9.75 minutes. If the maximum available wash time in the normal cycle is less than 9.75 minutes, the wash time shall be the maximum available wash time.
2.11 Agitation speed and spin speed settings. Where controls are provided for agitation speed and spin speed selections, set them as follows:
2.11.1 For energy and water consumption tests, set at the normal cycle settings. If settings at the normal cycle are not offered, set the control settings to the maximum speed permitted on the clothes washer.
2.11.2 For remaining moisture content tests, see section 3.3.
3. Test Measurements
3.1 Clothes container capacity. Measure the entire volume which a dry clothes load could occupy within the clothes container during washer operation according to sections 3.1.1 through 3.1.5.
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.
3.1.2 Line 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.
3.1.3 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. Measure and record the weight of water, W, in pounds.
3.1.5 The clothes container capacity is calculated as follows:
C=W/d.
where:
C=Capacity in cubic feet (or liters).
W=Mass of water in pounds (or 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)).
3.2 Test cycle. Establish the test conditions set forth in section 2 of this Appendix.
3.2.1 A clothes washer that has infinite temperature selections shall be tested at the following temperature settings: hottest setting available on the machine, hot (a minimum of 140 °F (60.0 °C) and a maximum of 145 °F (62.8 °C)), warm (a minimum of 100 °F (37.8 °C) and a maximum of 105 °F (40.6 °C)), and coldest setting available on the machine. These temperatures must be confirmed by measurement using a temperature measuring device. If the measured final water temperature is not within the specified range, stop testing, adjust the temperature selector accordingly, and repeat the procedure.
3.2.2 Clothes washers with adaptive water fill control system and/or unique temperature selections.
3.2.2.1 Clothes washers with adaptive water fill control system. When testing a clothes washer that has adaptive water fill control, the maximum and the minimum test loads as specified in 2.8.1 and 2.8.2 shall be used. The amount of water fill shall be determined by the control system. If the clothes washer provides consumer selection of variable water fill amounts for the adaptive water fill control system, two complete sets of tests shall be conducted. The first set of tests shall be conducted with the adaptive water fill control system set in the setting that will use the greatest amount of energy. The second set of tests shall be conducted with the adaptive water fill control system set in the setting that will use the smallest amount of energy. Then, the results from these two tests shall be averaged to determine the adaptive water fill energy consumption value. If a clothes washer with an adaptive water fill control system allows consumer selection of manual controls as an alternative, both the manual and adaptive modes shall be tested and the energy consumption values, ET, ME, and DE (if desired), calculated in section 4 for each mode, shall be averaged between the manual and adaptive modes.
3.2.2.2 Clothes washers with multiple warm wash temperature combination selections.
3.2.2.2.1 If a clothes washer's temperature combination selections are such that the temperature of each warm wash setting that is above the mean warm wash temperature (the mean temperature of the coldest and warmest warm settings) is matched by a warm wash setting that is an equal distance below the mean, then the energy test shall be conducted at the mean warm wash temperature if such a selection is provided, or if there is no position on the control that permits selection of the mean temperature, the energy test shall be conducted with the temperature selection set at the next hotter temperature setting that is available above the mean.
3.2.2.2.2 If the multiple warm wash temperature combination selections do not meet criteria in section 3.2.2.2.1, the energy test shall be conducted with the temperature selection set at the warm wash temperature setting that gives the next higher water temperature than the mean temperature of the coldest and warmest warm settings.
3.2.2.3 Clothes washers with multiple temperature settings within a temperature combination selection. When a clothes washer is provided with a secondary control that can modify the wash or rinse temperature within a temperature combination selection, the secondary control shall be set to provide the hottest wash temperature available and the hottest rinse temperature available. For instance, when the temperature combination selection is set for the middle warm wash temperature and a secondary control exists which allows this temperature to be increased or decreased, the secondary control shall be set to provide the hottest warm wash temperature available for the middle warm wash setting.
3.2.3 Clothes washers that do not lockout any wash/rinse temperature combinations in the normal cycle. Test in the normal cycle all temperature combination selections that are required to be tested.
3.2.3.1 Hot water consumption, cold water consumption, and electrical energy consumption at maximum fill. Set the water level selector at maximum fill available on the clothes washer, if manually controlled, and insert the appropriate test load, if applicable. Activate the normal cycle of the clothes washer and also any suds-saver switch.
3.2.3.1.1 For automatic clothes washers, set the wash/rinse temperature selector to the hottest temperature combination setting. For semi-automatic clothes washers, open the hot water faucet valve completely and close the cold water faucet valve completely to achieve the hottest temperature combination setting.
3.2.3.1.2 Measure the electrical energy consumption of the clothes washer for the complete cycle.
3.2.3.1.3 Measure the respective number of gallons (or liters) of hot and cold water used to fill the tub for the wash cycle.
3.2.3.1.4 Measure the respective number of gallons (or liters) of hot and cold water used for all deep rinse cycles.
3.2.3.1.5 Measure the respective gallons (or liters) of hot and cold water used for all spray rinse cycles.
3.2.3.1.6 For non-water-heating automatic clothes washers repeat sections 3.2.3.1.3 through 3.2.3.1.5 for each of the other wash/rinse temperature selections available that uses heated water and is required to be tested. For water-heating clothes washers, repeat sections 3.2.3.1.2 through 3.2.3.1.5 for each of the other wash/rinse temperature selections available that uses heated water and is required to be tested. (When calculating water consumption under section 4.3 for any machine covered by the previous two sentences, also test the cold wash/cold rinse selection.) For semi-automatic clothes washers, repeat sections 3.2.3.1.3 through 3.2.3.1.5 for the other wash/rinse temperature settings in section 6 with the following water faucet valve adjustments:
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Faucet position
------------------------------------------------------------------------------
Hot valve Cold valve
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Hot.............................. Completely open....................... Closed.
Warm............................. Completely open....................... Completely open.
Cold............................. Closed................................ Completely open.
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3.2.3.1.7 If the clothes washer is equipped with a suds-saver cycle, repeat sections 3.2.3.1.2 to 3.2.3.1.5 with suds-saver switch set to suds return for the Warm/Cold temperature setting.
3.2.3.2 Hot water consumption, cold water consumption, and electrical energy consumption with the water level selector at minimum fill. Set the water level selector at minimum fill, if manually controlled, and insert the appropriate test load, if applicable. Activate the normal cycle of the clothes washer and also any suds-saver switch. Repeat sections 3.2.3.1.1 through 3.2.3.1.7.
3.2.3.3 Hot and cold water consumption for clothes washers that incorporate a partial fill during the rinse cycle. For clothes washers that incorporate a partial fill during the rinse cycle, activate any suds-saver switch and operate the clothes 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. Measure the respective hot and cold water consumed during the complete normal cycle.
3.2.4 Clothes washers that lockout any wash/rinse temperature combinations in the normal cycle. In addition to the normal cycle tests in section 3.2.3, perform the following tests on non-normal cycles for each wash/rinse temperature combination selection that is locked out in the normal cycle.
3.2.4.1 Set the cycle selector to a non-normal cycle which has the wash/rinse temperature combination selection that is locked out. Set the water level selector at maximum fill and insert the appropriate test load, if applicable. Activate the cycle of the clothes washer and also any suds-saver switch. Set the wash/rinse temperature selector to the temperature combination setting that is locked out in the normal cycle and repeat sections 3.2.3.1.2 through 3.2.3.1.5.
3.2.4.2 Repeat section 3.2.4.1 under the same temperature combination setting for all other untested non-normal cycles on the machine that have the wash/rinse temperature combination selection that is locked out.
3.2.4.3 Total the measured hot water consumption of the wash, deep rinse, and spray rinse of each non-normal cycle tested in sections 3.2.4.1 through 3.2.4.2 and compare the total for each cycle. The cycle that has the highest hot water consumption shall be the most energy intensive cycle for that particular wash/rinse temperature combination setting.
3.2.4.4 Set the water level selector at minimum fill and insert the appropriate test load, if applicable. Activate the most energy intensive cycle, as determined in section 3.2.4.3, of the clothes washer and also any suds-saver switch. Repeat tests as described in section 3.2.4.1.
3.3 Remaining Moisture Content (RMC).
3.3.1 The wash temperature shall be the same as the rinse temperature for all testing. Cold rinse is the coldest rinse temperature available on the machine. Warm rinse is the hottest rinse temperature available on the machine.
3.3.2 Determine the test load as shown in the following table:
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Container volume Test load
------------------------------------------------------------------------
cu. ft. >= < liter >= < lb kg
------------------------------------------------------------------------
0-0.80................................ 0-22.7 3.00 1.36
0.80-0.90............................. 22.7-25.5 3.50 1.59
0.90-1.00............................. 25.5-28.3 3.90 1.77
1.00-1.10............................. 28.3-31.1 4.30 1.95
1.10-1.20............................. 31.1-34.0 4.70 2.13
1.20-1.30............................. 34.0-36.8 5.10 2.31
1.30-1.40............................. 36.8-39.6 5.50 2.49
1.40-1.50............................. 39.6-42.5 5.90 2.68
1.50-1.60............................. 42.5-45.3 6.40 2.90
1.60-1.70............................. 45.3-48.1 6.80 3.08
1.70-1.80............................. 48.1-51.0 7.20 3.27
1.80-1.90............................. 51.0-53.8 7.60 3.45
1.90-2.00............................. 53.8-56.6 8.00 3.63
2.00-2.10............................. 56.6-59.5 8.40 3.81
2.10-2.20............................. 59.5-62.3 8.80 3.99
2.20-2.30............................. 62.3-65.1 9.20 4.17
2.30-2.40............................. 65.1-68.0 9.60 4.35
2.40-2.50............................. 68.0-70.8 10.00 4.54
2.50-2.60............................. 70.8-73.6 10.50 4.76
2.60-2.70............................. 73.6-76.5 10.90 4.94
2.70-2.80............................. 76.5-79.3 11.30 5.13
2.80-2.90............................. 79.3-82.1 11.70 5.31
2.90-3.00............................. 82.1-85.0 12.10 5.49
3.00-3.10............................. 85.0-87.8 12.50 5.67
3.10-3.20............................. 87.8-90.6 12.90 5.85
3.20-3.30............................. 90.6-93.4 13.30 6.03
3.30-3.40............................. 93.4-96.3 13.70 6.21
3.40-3.50............................. 96.3-99.1 14.10 6.40 (continued)