SAFETY INFORMATION PRODUCT IDENTIFICATION UNPACKING THEORY OF OPERATION
3
SAFETY INFORMATION
Continued
•Never attach duct work to front or rear of heater.
•Use only original replacement parts. This heater must use de-
•Do not adjust regulator below 7 psig or above 20 psig.
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.
PRODUCT IDENTIFICATION
Hot Air Outlet (Front)
Handle
Fan
Guard
Outer Shell
On/Off Switch
Inlet Connector
Power
Cord
Hose/Regulator
Assembly
REAR VIEW | Thermostat Knob |
Figure 1 - 375,000 Btu/Hr Models
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 ignitor. The ignitor ignites the fuel and air mixture.
The Safety Control System: This system causes the heater to shut down if the flame goes out. The motor will continue to run, but no heat is produced.
Combustion |
|
Chamber | Fan |
Ignitor | |
Clean | Motor |
| |
Heated |
|
Air Out |
|
(Front) |
|
Cool Air
In (Back)
|
| Power | |
DSI |
| Cord | |
|
| ||
Nozzle | Solenoid |
| |
Valve | Hose/ | ||
| |||
Air For Combustion | Air For Heating | Regulator | |
|
| Assembly |
Figure 2 - Cross Section Operational View
For more information, visit www.desatech.com
