4
104975
PORTABLE FORCED AIR HEATER
R 15 E UK
®
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.
Fan
Fuel
Filter
Air For Fuel
System
Air For
Combustion
And Heating
Fuel
Spark
Plug
Combustion
Chamber
Intake
Air Filter
Motor
Air Pump
Air line
To Burner
Electronic
Ignitor
Burner
Head
Clean
Heated
Air Out
Cool
Air
In
Output
Air
Filter
Nozzle
Fuel
Tank
Figure 2 - Cross Section Operational View
VENTILATION
Provide a fresh air opening of at least 2800
square cm (three square feet) for each
100,000 Btu/Hr rating. Provide extra fresh
air if more heaters are being used.
This 50,000 Btu/Hr heater requires one of
the following:
• a two-car garage door (16 feet wide open-
ing) raised 3.2 cm (1
1
/
4
inches)
• a single-car garage door (9 feet wide
opening) raised 5.1 cm (2 inches)
• two, 76 cm (thirty-inch) windows raised
9.6 cm (3
3
/
4
inches)
WARNING: Follow the mini-
mum fresh, outside air ventila-
tion requirements. If proper fresh,
outside air ventilation is not pro-
vided, carbon monoxide poison-
ing can occur. Provide proper
fresh, outside air ventilation be-
fore running heater.
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
• use of non-toxic anti-icer in fuel during
very cold weather
IMPORTANT:
Use a KEROSENE ONLY
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 re-
quire you to clean fuel system often.
WARNING: Use only kerosene
or No. 1 fuel oil to avoid risk of fire
or explosion. Never use gaso-
line, naphtha, paint thinners, al-
cohol or other highly flammable
fuels.
FUELS
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.
