Theory Of Operation; Assembly - Desa 125,000 Btu/Hr Owner's Manual

THEORY OF OPERATION

4

ASSEMBLY

THEORY OF OPERATION
The air pump forces air through the air line. The
The Fuel System:
air is then pushed through the nozzle. This air causes fuel to be lifted
from the tank. A fine mist of fuel is sprayed into the combustion
chamber.
The motor turns the fan. The fan pushes air into
The Air System:
and around the combustion chamber. This air is heated and provides
a stream of clean, hot air.
The ignition control assembly provides
The Ignition System:
power to the ignitor. This ignites the fuel/air mixture in the combus-
tion chamber.
The Flame-Out Control System:
shut down if the flame goes out.
Combustion Chamber
Ignitor
Clean
Heated
Air Out
Fuel
Nozzle
Tank
Air For Fuel System
Figure 3 - Cross Section Operational View
This system causes the heater to
Air Pump
Motor
Air Intake
Fan
Filter
Fuel Air Line
Ignition Control
Filter To Burner
Assembly
Air For Combustion
Fuel
And Heating
For more information, visit www.desatech.com
For more information, visit www.desatech.com
ASSEMBLY
These models are furnished with wheels and a rear handle. Wheels,
handle, and the mounting hardware are found in the shipping carton.
Tools Needed
• Medium Phillips Screwdriver
• Pliers
1. Slide axle through shroud. Install washers and wheels on axle
as shown in Figure 4.
IMPORTANT: When installing wheels, point extended hub of
wheels toward shroud (see Figure 4).
2. Place cotter pins in axle. Bend cotter pin legs around axle.
3. Install extension cord wraps into handle.
4. Slide handle onto shroud leaving a one inch gap between parts.
5. Place washers onto screws and insert screws into holes in
handles.
Cool
Air 6. Visually confirm that all six screws are threaded into nuts in
In
the shroud. Push the handle completely into the shroud.
7. Tighten all scews.
Air
Output Hot Air Outlet
Filter
Shroud
Axle
Cotter Pin
Washer
Wheel
Washer
Figure 4 - Wheel and Handle Assembly
• Hammer
• Flat Blade Screwdriver
Air Inlet
Rear Panel
Extended Hub
Screw
Handle
Washer
Extension
Cord Wrap
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