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.

 

 

 

 

Motor i

Air Pump

 

Combustion

Spark

Burner

Fan

Air

 

 

 

Intake

 

 

 

 

/

Chamber

",, \ Plug

/

/

Filter

Clean

 

 

 

 

Cool

Heated

 

 

 

 

 

 

 

 

Air

Air Out

 

 

 

 

 

 

 

 

In

 

 

 

 

 

 

 

 

 

 

\ Air

 

 

 

/

 

Output

 

 

 

/

 

Filter

 

 

 

/

 

 

 

 

 

/

 

 

 

 

 

/

 

 

/

 

 

/

 

 

 

 

/

 

 

Fuel ............./

Nozzle .............../

/

/

 

 

/

/..............Air Line

.............Electronic

,............Fuel

Tank

 

Filter

To Burner

Ignitor

 

Air For Fuel

 

Air For Combustion

Fuel

 

System

 

And Heating

 

 

 

 

 

Figure 4 - Cross Section Operational View

FUELS

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.

10050d

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Sears 583.35683, 583.35682, 583.3565 owner manual Theory of Operation, Fuels

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