20-032 0-88--5 200 Alaska 0 Canal Zone Cooling Load Hours Guam 6,000 6,600 6.1.3 Distribution of Actual Cooling Load Hours (CLH) Throughout the United States 'Test operating tolerance is the maximum permissible variation of any measurement. When expressed as a percentage, the maximum allowable variation is the specified percentage of the average value. Test Operating Tolerance During Heating applies when the heat pump is in the heating mode, except for the first 5 minutes after termination of a defrost cycle. Test Operating Tolerance During Defrost applies during a defrost cycle and during the first 5 minutes after the termination of a defrost cycle when the heat pump is operating in the heating mode. 2 Test condition tolerance is the maximum permissible variation of the average value of the measurement from the standard or desired test condition. Test Condition Tolerance applies only when the heat pump is operating in the heating mode. 3 Not applicable during defrost if the indoor fan is off. 6.2.4 Distribution of fractional hours in temperature bins, heating load hours and outdoor design temperature for the different climatic regions. 6.2.5 Actual heating load hours (HLHA) and regional heating load hours (HLHR for the United States 3000 WI WY NE IV CO KS AZ NM NC OK TN AR III II 1500 1500 1000 This map is reasonably accurate fur most parts of the United States but is necessanly highly generalized and consequently not too accurate in mountainous regions, particularly in the Rockies |