Theory of Operation
CAUTION: Heater must be turned off while
Do not operate heater in enclosed areas where
combustible fumes may be present.
Prior to operating the heater, ensure that the
fuel system is intact and there are no leaks.
Extreme care should be taken to ensure a
proper mixture of water and antifreeze is used
in the coolant system to be heated, to prevent
coolant from freezing or slushing. If the coolant
becomes slushy or frozen, the heater's coolant
pump cannot move the coolant causing a
blockage of the circulating system. Once this
occurs, pressure will build up rapidly in the
heater and the coolant hose will either burst or
blow off at the connection point to the heater.
This situation could cause engine damage
and/or personal injury.