Theory Of Operation; Fuels - Desa 100 Owner's Manual

THEORY OF
OPERATION

FUELS

6
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
Clean
Heated
Air Out
Nozzle
Fuel
Tank
Air For Fuel
System
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.
Spark
Plug
Fuel
Filter
THEORY CUTAWAY
Figure 4 - Cross Section Operational View
!
WARNING
Motor
Burner
Fan
Head
Air Line
To Burner
Air For Combustion
And Heating
PFA/OV 003
Air Pump
Air
Intake
Filter
Cool
Air
In
Air
Output
Filter
Electronic
Ignitor
Fuel
099176