Theory Of Operation; To Start Heater; To Stop Heater - NU-TOOL Nu-Air NTH100-2 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 ignition con-
trol assembly provides power to the ignitor.
This ignites the fuel/air mixture in the com-
bustion chamber.
The Flame-Out Control System:
tem causes the heater to shut down if the
flame goes out.
Combustion Chamber
Clean
Heated
Air Out
Nozzle
Fuel
Tank
Air For Fuel System
Figure 4 - Cross Section Operational View
105787
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 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
240 volt/50 hertz, grounded (earthed)
This sys-
outlet. Use an extension cord if needed.
Use only a three-prong, grounded
(earthed) extension cord.
Motor
Ignitor
Fan
Fuel
Air Line
Filter
To Burner
Air For Combustion
And Heating
OWNER'S MANUAL
EXTENSION CORD WIRE
SIZE REQUIREMENTS
Up to 30.5 meters (100 feet) long, use 1.0
mm
30.6 to 61 meters (101 to 200 feet) long, use
1.5 mm
Push ON/OFF switch to ON (|) position and
heater should start in 5 seconds. If ON/OFF
switch light does not come on or heater does
not start, see Troubleshooting (pages 6 and 7).

TO STOP HEATER

Push ON/OFF switch to OFF (O)position.
TO RESET HEATER
1.
2.
Air Pump
Air Intake
Filter
Cool
Air
In
Air
Output
Figure 5 - ON/OFF Switch, 35/50/70,000
Filter
Btu/Hr Models
Ignition Control
Assembly
Fuel
Figure 6 - ON/OFF Switch, 100/150,000
Btu/Hr Models
5
2
(16 AWG) conductor
2 (14 AWG) conductor
Push ON/OFF switch to OFF (O) posi-
tion and wait 10 seconds (2 minutes if
heater has been running).
Repeat steps under To Start Heater.
|
ON/OFF Switch
with Light
O
|
ON/OFF Switch
with Light
O