7.3.1 Heater
The diesel heater is an optional feature and its operation is described in a separate manufacturer's manual. It is connected to an on/off type fuse, which also functions as a main switch for the device. The location of the heater and heater controls are presented in the image in section Fuel-operated equipment.
Always turn off the heater when refueling.
Clean up any fuel spills immediately.
Do not close the heater's warm air vent when it is switched on. This can cause the heater to overheat and engage the overheat protection.