Operating Instructions
26
Coil Temperature sensor to prevent frost buildup on the
evaporator coil. If coil temperature falls below 32 F the
compressor clutch is de-energized. When coil temperature rises
above 45 F the compressor clutch is energized.
The APU engine will shut down when the sleeper compartment
temperature remains near setpoint and the truck batteries are
charged. The evaporator fan will continue to run. If sleeper
compartment temperature rises above setpoint by more than
the Dead Band setting (default 3 F) the APU engine will restart
and compressor clutch will re-engage. Battery voltage sensing
and engine coolant temperature sensing are enabled for the
APU. Refer to Monitor Mode.
Heat Mode
The air heater is a separate module that heats the sleeper
compartment to the setpoint selected with the Temperature
Selector knob. Sleeper compartment temperature is sensed
inside the air heater, it does not use the Cab Temperature
Sensor on the HMI. All heater function is controlled by a
separate module inside the heater. The TriPac evaporator fan is
defaulted to OFF when Heat Mode is selected. It can be turned
on to provide additional air circulation. Battery voltage sensing
and engine coolant temperature sensing are enabled for the
APU. Refer to Monitor Mode.
Fan Mode
The TriPac evaporator fan can be turned on with the Fan Speed
Selector knob to provide additional air circulation in the
sleeper compartment and truck cab. Three fan speeds can be
selected (Low, Medium, High). LEDs around the Fan Speed
Selector will indicate the selected speed. Battery voltage
sensing and engine coolant temperature sensing are enabled for
the APU. Refer to Monitor Mode.
Standby Mode (Option)
The optional TriPac Standby Mode allows the system to be
controlled by an external switch input. This is typically the
truck ignition using the optional Standby Truck Integration.
The feature is used to disable the TriPac APU when the truck
engine is running. When the truck ignition switch is in the run
position, a voltage signal is sent to the controller. The TriPac
system will enter Standby Mode. The following occurs when
the TriPac system is in Standby Mode:
•
The STBY indicator on the HMI will illuminate.
•
Air conditioning, fan or heat operation will terminate.
•
The APU engine will stop.
•
The TriPac controller remains on but will not respond to
any operation requests, such as low battery voltage or low
coolant temperature.
Operating Instructions
26
Coil Temperature sensor to prevent frost buildup on the
evaporator coil. If coil temperature falls below 32 F the
compressor clutch is de-energized. When coil temperature rises
above 45 F the compressor clutch is energized.
The APU engine will shut down when the sleeper compartment
temperature remains near setpoint and the truck batteries are
charged. The evaporator fan will continue to run. If sleeper
compartment temperature rises above setpoint by more than
the Dead Band setting (default 3 F) the APU engine will restart
and compressor clutch will re-engage. Battery voltage sensing
and engine coolant temperature sensing are enabled for the
APU. Refer to Monitor Mode.
Heat Mode
The air heater is a separate module that heats the sleeper
compartment to the setpoint selected with the Temperature
Selector knob. Sleeper compartment temperature is sensed
inside the air heater, it does not use the Cab Temperature
Sensor on the HMI. All heater function is controlled by a
separate module inside the heater. The TriPac evaporator fan is
defaulted to OFF when Heat Mode is selected. It can be turned
on to provide additional air circulation. Battery voltage sensing
and engine coolant temperature sensing are enabled for the
APU. Refer to Monitor Mode.
Fan Mode
The TriPac evaporator fan can be turned on with the Fan Speed
Selector knob to provide additional air circulation in the
sleeper compartment and truck cab. Three fan speeds can be
selected (Low, Medium, High). LEDs around the Fan Speed
Selector will indicate the selected speed. Battery voltage
sensing and engine coolant temperature sensing are enabled for
the APU. Refer to Monitor Mode.
Standby Mode (Option)
The optional TriPac Standby Mode allows the system to be
controlled by an external switch input. This is typically the
truck ignition using the optional Standby Truck Integration.
The feature is used to disable the TriPac APU when the truck
engine is running. When the truck ignition switch is in the run
position, a voltage signal is sent to the controller. The TriPac
system will enter Standby Mode. The following occurs when
the TriPac system is in Standby Mode:
•
The STBY indicator on the HMI will illuminate.
•
Air conditioning, fan or heat operation will terminate.
•
The APU engine will stop.
•
The TriPac controller remains on but will not respond to
any operation requests, such as low battery voltage or low
coolant temperature.
