Table of Contents
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PRODUCT IDENTIFICATION
Hot Air
Outlet
(Front)
Lower Shell
On/Off
Switch
Hose/Regulator
Assembly
Figure 1 - 150,000 Btu/Hr Model
Clean
Heated
Air Out
(Front)
Figure 2 - Cross Section Operational View
103014-01L
Upper Shell
Handle
Fan Guard
Power Cord
Thermostat Knob
Inlet
Connector
Combustion Chamber
Nozzle
Air For Combustion
Air For Combustion
And Heating
For more information, visit www.desatech.com
For more information, visit www.desatech.com
UNPACKING
1. Remove all packing items applied to heater for shipment. Keep
plastic cover caps (attached to inlet connector and hose/regu-
lator assembly) for storage.
2. Remove all items from carton.
3. Check all items for shipping damage. If heater is damaged,
promptly inform dealer where you bought heater.
THEORY OF OPERATION
The Fuel System:
propane gas supply. The propane gas moves through the solenoid
valve and out the nozzle.
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:
to the spark plug/ignitor. The spark plug/ignitor ignites the fuel and
air mixture.
The Safety Control System:
down if the flame goes out.
Ignitor
Fan
Fuel
DSI
On/Off Switch
Solenoid
Valve
Fuel
PRODUCT IDENTIFICATION
UNPACKING
THEORY OF OPERATION
The hose/regulator assembly attaches to the
The direct spark ignitor (DSI) sends voltage
This system causes the heater to shut
Motor
Cool
Air In
(Back)
Power
Cord
Hose/Regulator
Assembly
3 3
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