Sleeper Climate Control Panel
The sleeper heater and air conditioner system features Constant Discharge Temperature Control (CDTC). The sleeper climate control panel is shown in Fig.. The CDTC maintains a constant temperature of airflow in the sleeper 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.
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Fan Switch
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Temperature Control Switch
Fig. 1, Sleeper Climate Control Panel
Fan Switch
The fan switch controls the sleeper heater and air conditioner system fan speed. The sleeper climate control panel has eight fan speeds and an off position. To increase airflow, turn the switch clockwise or to a higher number. To decrease the airflow, turn the switch counterclockwise or to a lower number.
Note: When the cab air conditioner is on, the sleeper fan will operate at low speed even though the sleeper fan switch is in the off position. This is necessary to protect the evaporator in the sleeper heater and air conditioner system from freezing.
Temperature Control Switch
The temperature control switch is used to select the desired temperature in the sleeper. Turn the switch clockwise or to the red area for warm air. Turn the switch counterclockwise or to the blue area for cool air.
The air conditioner automatically turns on when necessary to maintain the selected temperature in the sleeper. If the sleeper air conditioner automatically turns on when the cab air conditioner is on, the cab air conditioner fan speed and temperature settings will override the sleeper air conditioner settings.
The CDTC system is disabled when the temperature control switch is in the maximum cool or maximum warm positions.
The bunk override switch allows the driver to remotely control the temperature and fan speed settings in the sleeper. The bunk override mode can be canceled by changing the sleeper fan speed or temperature setting. After the override mode is canceled, the sleeper heater and air conditioner system will operate from the sleeper fan speed and temperature settings and the amber indicator on the switch will be off.
Air Outlets
The face outlets on the instrument panel have louvers that can be moved right and left, and up and down. Move the louvers to the desired location or to close the outlet. The defrost (windshield) outlets and the outlets that are directed at the doors are not adjustable.
The sleeper has one or two air outlets on the right side of the cab, depending on the height of the cab. The sleeper air outlet pivots from side to side and has louvers that can be moved up and down or closed.