Determination Of Temperature Control Unit Refrigeration / Heating Performance And Reporting

Cooling Capacity  - The cooling capacity of the temperature control unit at 35°F and 0°F box temperature shall be determined (and certified) in accordance with the Air Conditioning, Heating and Refrigeration Institute (AHRI) Standard 1110 (or equivalent) for Mechanical Transport Refrigeration Units, latest revision, by the manufacturer of the temperature control unit. Cooling capacity at -20°F box temperature shall be determined using the procedures of AHRI Standard 1110, only at 100°F ambient and -20°F box temperatures.

Heating Capacity  - The heating capacity of the temperature control unit at 65°F and 35°F box temperature for 0°F ambient temperature shall be determined in general accordance with the provisions of AHRI standard 1110 (latest revision), except as modified or altered by this practice. See APPENDIX A  for test procedure.

Air Discharge Performance  - The air discharge flow rate of the temperature control unit shall be determined using the procedure as outlined in Air Movement and Control Association (AMCA) Standard 210, latest revision (or equivalent). The air flow rate shall be expressed in standard cubic feet per minute at two different static pressure conditions.

Condition 1 will be measured at zero inch water column static resistance, representing a unit installed on an empty vehicle and without a bulkhead or air chute.

Condition 2 will be measured against a typical load curve, defined as one inch water column static pressure resistance when circulating one complete air change every minute in a 48-foot, 102-inch wide vehicle. This load curve, however, is representative of all size vehicles, 28 to 60 feet in length. See Figure for the typical air flow rating curve. The temperature control unit manufacturer shall affix a certification plate or decal on the temperature control unit as shown in Figure