6. Installation of by-pass humidifiers

(a)

Refer to AMCA Standard 210, Figure 1.2 for Details

Straightener

Nozzle

[42 FR 27898, June 1, 1977. Redesignated and amended at 44 FR 37938, June 29, 1979]

APPENDIX K2 TO SUBPART B OF PART 430-UNIFORM TEST METHOD FOR MEASURING THE ENERGY CONSUMPTION OF ROOM HUMIDIFIERS

1. DEFINITIONS

1.1 "AHAM" means the Association of Home Appliance Manufacturers.

1.2 "AHAM HU-1-72" means the test standard published by the AHAM, titled "Appliance Humidifiers" American National Standard Z235.1-1972, and designated as AHAM HU-1-72.

1.3 "Humidification rate" 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.

1.4 "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.

1.5 "Humidification power" means the power, in kilowatts, required to vaporize water at the humidification rate.

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. TEST CONDITIONS

2.1 Installation. Install the humidifier according to manufacturer's instructions and in accordance with sections 5.2 and 5.3 of AHAM HU-1-72. In the event of a conflict between the manufacturer's instructions and AHAM HU-1-72, the provision of AHAM HU-1-72 shall control.

2.2 Energy flow instrumentation. Install energy flow instrumentation in accordance with section 5.1 of AHAM HU-1-72. A watthour meter shall be installed in the electrical circuit when a humidifier is connected to an electrical supply circuit. The watt-hour meter shall not have an error greater than 1 percent with the smallest scale division not greater than 1 watt-hour.

2.3 Temperature instrumentation. Use mercury-in-glass thermometers accurate to within 0.1° F to measure wet bulb, dry bulb, and water reservoir temperatures. The smallest graduation on the thermometers shall not be greater than 0.2° F.

2.4 Air pressure instrumentation. Use an air pressure measurement instrument accurate to within 0.1 inch of mercury.

2.5 Time instrumentation. Use time instrumentation in acordance with section 5.1.4 of AHAM HU-1-72.

2.6 Weight instrumentation. Use weight instrumentation in accordance with section 5.1.5 of AHAM HU-1-72.

3. TEST PROCEDURES AND MEASUREMENTS

3.1 Humidification rate. Determine the humidification rate, Q, of the humidifier under test, in gallons per day, according to the methods and calculations specified in sections 5.2 and 6 of AHAM HU-1-72.

3.2 Input power. Connect the humidifier through a watt-hour meter in accordance with section 2.2 of this Appendix. Humidifiers with electric heaters shall be run with heaters on and humidity controls set at maximum levels. Measure the total electrical energy consumption, in watt-hours, at the end of the two hour test period. Calculate the input power to the humidifier, P, in kilowatts by dividing the two hour energy consumption measured in the test by 2 to obtain watts and then by 1000 to obtain kilowatt.

3.3 Barometric Pressure. Humidification rate shall be measured when barometric pressure is within the range of 29.9 inches (±1) of mercury.

section 3.1 of this Appendix, in gallons per day. 0.93 correction factor to adjust the humidifier output at standard conditions of 75° F and 30 percent relative humidity to normal room conditions of 70° F and 30 percent relative humidity, dimensionless.

SPF=1.0, seasonal performance factor of electric furnace or electric resistance heating, dimensionless. 3412-conversion factor to convert kilowatt-hours to Btu's. Es as defined in 4.2

4.2 Average annual supplementary electrical energy consumption. Calculate the avannual erage supplementary electrical energy consumption, Es, expressed in kilowatt-hours per year, and defined as:

where

EF-G-Qo-3412Es/SPFG,

SPFG .65 seasonal performance factor of gas furnaces, gas boilers, or unvented gas heaters, dimensionless

Qo as defined in 4.1 3412 as defined in 4.1

Es as defined in 4.2

4.5 Average annual oil furnace or oil boiler energy consumption. Calculate the average annual oil furnace energy or oil boiler consumption. Er-o, expressed in Btu's per year, to vaporize water to maintain a room relative humidity of 30 percent at a room temperature of 70° F, and defined as: Er-o-(Qo-3412Es/SPF),

where

5. Regional factors for adjusting the humidity loads of the respective regions.

APPENDIX L TO SUBPART B OF PART 430-UNIFORM TEST METHOD FOR MEASURING THE ENERGY CONSUMPTION OF DEHUMIDIFIERS

1. DEFINITIONS

1.1 "ANSI" means the American National Standard Institute.

1.2 "ANS B149.1-1972" means the test standard published by the ANSI, titled "American National Standard B149.1, Dehumidifiers", and designated as ANS B149.11972.

1.3 "Capacity" means a measure of the ability of a dehumidifier to remove moisture from its surrounding atmosphere.

1.4 "Rated capacity” means the amount of water, stated in pints, collected per 24 hours of continuous operation when tested in accordance with this Appendix.

2. TESTING CONDITIONS

2.1 Installation and Operational Conditions. Install the dehumidifier, and maintain the operating conditions, according to ANS B149.1-1972 as amended by section 3.1 of this Appendix. Install a watt-hour meter with an error not greater than 0.5 percent of the indicated value. The smallest scale graduation of the watt-hour meter shall not exceed one watt-hour.

3. TESTING AND MEASUREMENTS

3.1 Test. Perform a test by establishing the testing conditions set forth in section

2.1 of this Appendix, testing the dehumidifier in accordance with ANS B149.1-1972 sections 3, 4, 5, 6, and 7, except that paragraphs 5.1 and 6.3 of ANS B149.1-1972 shall be deleted.

3.2 Test Measurements. Measure the energy consumption (E), in kilowatt-hours (kWh) during the test performed according to section 3.1 and perform the measurements specified in section 7 of ANS B149.11972.

3.3 Recorded Values. Record both the energy consumption as measured according to section 3.2 of this Appendix and the data specified in section 7 of ANS B149.1-1972.

4. CALCULATION OF DERIVED RESULTS FROM TEST MEASUREMENTS

4.1 Rated Capacity. Calculate the rated capacity, C., expressed in pints of condensate collected per 24 hours, in accordance with section 7.5 of ANS B149.1-1972, the resulting quotient then being rounded off to the nearest 0.1 pints/day.

4.2 Hourly Energy Consumption. Calculate the hourly energy consumption (EH), expressed in kWh per hour and defined as:

EH-Cr/24X Es

Cr the rated capacity as calculated in section 4.1 of this Appendix

E the energy factor as calculated in section 430.22(1)(3).