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Operation description
The heater is a forced air diesel heater without an exposed flame.
The heater
takes combustion air from outside the
boat
through the outer coaxial exhaust gas pipe and blow
s
combustion
exhaust out through the inner coaxial pipe. The
coaxial pipe
connects to a common through hull fitting that allows both inlet air and exhaust to pass separately. This
process
improves efficiency, wind resistance and lowers the minimum power level, while cooling the exhaust system.
For all these models, fresh makeup air is taken from desired areas with air intake ducting, e.g. from outside of the boat
,
inside the cabin or blended. This enables good air circulation and/or cabin air replacement. Diesel engine
compartment
installations are supported by the separate makeup air intake ducts, quarantining the makeup air away
from any smells
or noxious engine fumes. The heating power can be adjusted freely between high and low output
settings by manual
control or by thermostat. In hot and/or humid conditions, these heating units can be used for simple
fresh air ventilation
and circulation.
When starting the device, the glow plug ignites the pumped fuel in the burner bowl. The glow/start and shut down
sequences are factory programmed, so - starts and stops are automatically controlled. The fuel pump inside the heater
case regulates the fuel feed and the system electronics control the fuel and air mixture to maintain the ideal clean
burning process. The temperature sensor inside the burner feels the ignition and lights up the control panel flame
indicator to indicate a successful start. When stopping the device, an automatic after cooling process takes place. This
process cleans the burner, purging any unburned fuel
and cooling the system
.
Wallas heaters are built out of the finest corrosion resistant materials to withstand marine conditions.