Constant Discharge Temperature Control

The cab heater and air conditioner system is a Constant Discharge Temperature Control (CDTC) system. The CDTC maintains a constant temperature of airflow in the cab regardless of outside air temperature, selected fan speed, engine coolant temperature, or engine coolant flow. Once the temperature control switch is turned to the desired temperature, no other adjustments are necessary. The CDTC system is disabled when the temperature control switch is in the maximum cool or maximum warm position.