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103014-01L
3
3
For more information, visit www.desatech.com
For more information, visit www.desatech.com
PRODUCT IDENTIFICATION
UNPACKING
THEORY OF OPERATION
Hot Air
Outlet
(Front)
Upper Shell
On/Off
Switch
Power Cord
Hose/Regulator
Assembly
Inlet
Connector
Lower Shell
Thermostat Knob
PRODUCT IDENTIFICATION 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: The hose/regulator assembly attaches to the
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: The direct spark ignitor (DSI) sends voltage
to the spark plug/ignitor. The spark plug/ignitor ignites the fuel and
air mixture.
The Safety Control System: This system causes the heater to shut
down if the flame goes out.
Air For Combustion Fuel
Combustion Chamber
Ignitor
Figure 2 - Cross Section Operational View
Clean
Heated
Air Out
(Front)
Cool
Air In
(Back)
Fan
Motor
Power
Cord
Hose/Regulator
Assembly
Solenoid
Valve
On/Off Switch
Air For Combustion
And Heating
Fuel
DSI
Nozzle
Figure 1 - 150,000 Btu/Hr Model
Handle
Fan Guard