Desa H.S.I. Series Electric Heater User Manual


 
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THEORY OF
OPERATION
The Fuel System: The air pump forces air through the air line. The air is then
pushed through the burner head nozzle. This air causes fuel to lift from the tank.
A fine mist of fuel is sprayed into the combustion chamber.
The Air System: The motor turns the fan. The fan pushes air into and around
the combustion chamber. This air is heated and provides a stream of clean, hot air.
The Ignition System: The electronic ignitor sends voltage to the spark plug.
The spark plug ignites the fuel and air mixture.
The Flame-Out Control System: This system causes the heater to shut down
if the flame goes out.
WARNING
!
FUELS
Use only kerosene or No. 1 fuel oil to avoid risk of re or
explosion. Never use gasoline, naphtha, paint thinners,
alcohol, or other highly ammable fuels.
Do not use heavy fuels such as No. 2 fuel oil or No. 2 Diesel. Using heavy fuels
will result in:
clogged fuel lter and nozzle
carbon build up on spark plug
the need of non-toxic anti-icer in fuel during very cold weather
IMPORTANT:
Use a KEROSENE ONLY storage container. Be sure storage con-
tainer is clean. Foreign matter such as rust, dirt, or water will cause the flame-out
control to shut down heater. Foreign matter may also require you to clean fuel
system often.
Fuel
Filter
Air For Fuel
System
Air For Combustion
And Heating
Fuel
Combustion
Chamber
Air
Intake
Filter
Clean
Heated
Air Out
Cool
Air
In
Air
Output
Filter
Fuel
Tank
Figure 2 - Cross Section Operational View
Burner
Head
Spark
Plug
Motor
Fan
Electronic
Ignitor
Air Line
To Burner
Nozzle
Air Pump