Sears 583.35683 - Manual (Page 6)

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.
Combustion
Chamber
Spark Burner
Head-
Clean
Heated
Air Out
f ^ — > \ r r \
■ ^
" ( ^ Z .
> ^
r~\ r~\ ^
■ "" / 1 1
L .........^ ............... _________________________ 1 1 /
/ t i .................
Air Pump
Air
Intake
Filter
w[
i>\ ^
' \ Ti. . . . . . . . ■'
Air
Output
Filter
Fuel
Tank
Nozzle
Air For Fuel
System
Fuel
Filter ^... Air Line
To Burner
Air For Combustion
And Heating
Eiectronic
Ignitor
Fuel
Figure 4 - Cross Section Operationai View
FUELS
A WARNING
Use only kerosene or No. 1 fuel oil to avoid risk of fire or
explosion. Never use gasoline, naphtha, paint thinners,
alcohol, or other highly flammable fuels.
Do not use heavy fuels such as No. 2 fuel oil or No. 2 diesel. Using heavy fuels
will result in:
• clogged fuel filter 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
container 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.