Theory Of Operation; To Start Heater; To Stop Heater; To Restart Heater - Desa RM200T Owner's Manual

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
Clean
Heated
Air Out
Fuel Nozzle
Tank
Air For Fuel
System
Figure 3 - Cross Section Operational View
103607
OPERATION
WARNING: Review and un-
derstand the warnings in the
Safety Information section, page
2. They are needed to safely op-
erate this heater. Follow all local
codes when using this heater.

TO START HEATER

1. Follow all ventilation and safety
information.
2. Fill fuel tank with kerosene or No. 1
fuel oil.
3. Attach fuel cap.
4. Plug power cord of heater into three-
prong, grounded extension cord. Exten-
sion cord must be at least six feet long.
Motor
Spark
Burner
Plug
Fan
Head
Air Line
Fuel
To Burner
Filter
Air For Combustion
And Heating
OWNER'S MANUAL
5.

TO STOP HEATER

Air Pump
Unplug extension cord from outlet.
Air
Intake

TO RESTART HEATER

Filter
1. Wait two minutes after stopping heater.
Cool Air
2.
In
Air
Output
Filter
Electronic
Ignitor
Figure 4 - Flame-out Control Reset Button
Fuel
5
Extension Cord Wire Size
Requirements
6 to 10 feet long, use 18 AWG rated cord
11 to 100 feet long, use 16 AWG rated cord
101 to 200 feet long, use 14 AWG rated cord
Plug extension cord into standard 120
volt/60 hertz, three-hole, grounded out-
let. Adjust thermostat to desired setting.
If heater does not start, thermostat set-
ting may be too low. Turn thermostat
knob to higher position to start heater.
If thermostat is in HIGH position and
heater still will not start, push in flame-
out control reset button (see Figure 4).
Note: A cold heater may affect the ther-
mostat setting. This thermostat is a gen-
eral-heating control. It is not intended
for precise temperature control. Adjust
thermostat until heater cycles at the
desired setting.
Repeat steps under To Start Heater.
Flame-out
Control
Reset
Button