Thermo King TriPac Envidia, Installation Manual

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Priming the Heater Fuel Pump (Heat Option)
Priming the Heater Fuel System
Special Tools Required
Heater Priming Harness (204-1144)
The heater uses a pulse style fuel pump. You must use the heater priming harness to operate the fuel pump to prime the
system. Applying continuous power to the pump will not work.
NOTE: Verify there is a sufficient amount of fuel in the fuel tank.
1. Attach the Heater Priming Harness connector to the heater fuel pump.
2.
Attach the alligator clips to the battery
:
Wire Battery Connection
Red Positive
Black Negative
3. Turn the priming harness switch to the “ON” position.
4. The flasher unit will operate the fuel pump (ON/OFF/ON/OFF) to prime the system.
5. Allow the system to operate for approximately 5 minutes to bleed air from the fuel lines.
NOTE: Running the fuel pump longer than 5 minutes will cause the heater to emit excessive white smoke when
operated.
6. Check fuel lines and system for leaks.
7. Turn the priming harness switch to the “OFF” position. Disconnect the positive and then the negative battery
connections.
8. Disconnect the priming harness connector from the heater fuel pump.
9.
Attach the heater fuel pump harness onto the heater fuel pump
.
Figure 35: Priming the Heater Fuel Pump