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TK 55711-19-OP-EN
Heat Mode
The air heater is a separate module that heats the sleeper compartment to
the setpoint selected with the HMI Temperature Selector knob. Sleeper
compartment temperature is sensed inside the air heater, it does not use the
Cab Temperature Sensor on the HMI Control Panel. All heater functions are
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 if desired. Battery voltage sensing and
engine coolant temperature sensing (if equipped with the Arctic Option) are
enabled for the APU. Refer to (“Monitor Mode,” p. 31) for details.
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 or High). LEDs
around the Fan Speed Selector will indicate the selected speed. Battery
voltage sensing and engine coolant temperature sensing (if equipped with
the Arctic Option) are enabled for the APU. Refer to (“Monitor Mode,” p. 31)
for details.
Standby Mode (Optional)
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 Base 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 Base Controller remains on but will not respond to any operation
requests, such as low battery voltage, low coolant temperature, or changes
in cab temperature.
SSttaannddbbyy TTrruucckk IInntteeggrraattiioonn ((OOppttiioonnaall))
An optional wire harness connects the truck ignition switch to an SBY circuit
input connection on the TriPac Interface Board. The Base Controller monitors
voltage on this circuit. The following conditions occur:
OOppeerraattiinngg IInnssttrruuccttiioonnss
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