Desa NTH100 - Manual (Page 5)

5 104976
OWNER’S MANUAL
OPERATION
WARNING: Review and un-
derstand the warnings in the
Safety Information Section. They
are needed to safely operate this
heater. Follow all local codes
when using this heater.
TO START HEATER
1. Follow all ventilation and safety infor-
mation.
2. Fill fuel tank with kerosene or No. 1
fuel oil.
3. Attach fuel cap.
4. Plug power cord of heater into standard
230 volt/50 hertz, grounded (earthed)
outlet. Use an extension cord if needed.
Use only a three-prong, grounded
(earthed) extension cord.
Flame-Out Control
Reset Button
ON/OFF Switch
Flame-Out Control
Reset Button
ON/OFF
Switch
Figure 5 - Flame-Out Control Reset
Button, 35/50/70,000 Btu/Hr
Figure 6 - Flame-Out Control Reset
Button, 100/150,000 Btu/Hr
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.
EXTENSION CORD WIRE
SIZE REQUIREMENTS
Up to 30.5 meters (100 feet) long, use 1.0
mm
2 (16 AWG) conductor
30.6 to 61 meters (101 to 200 feet) long, use
1.5 mm
2 (14 AWG) conductor
Push ON/OFF switch to ON and heater
should start. If heater does not start, press
flame-out control reset button (see Figures 5
and 6).
TO STOP HEATER
1. Push ON/OFF switch to OFF.
TO RESTART HEATER
1. Wait 2 minutes after stopping heater.
2. Repeat steps under To Start Heater.
Electronic
Ignitor
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
Burner
Head
Clean
Heated
Air Out
Cool
Air In
Output
Air Filter
Nozzle
Fuel
Tank
Figure 4 - Cross Section Operational View