Unpacking
1.Remove all packing items applied to heater for shipment. Keep plastic cover cap (attached to heater inlet connector and hose/regulator 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.
Assembly
IMPORTANT: Do not use this product without leg and foot assembly.
Handle
Attach handle to control box with 2 screws (long) as shown in Figure 3.
Plastic Foot and Leg Extensions
1.Insert leg extensions into outlet end cap until small hole lines up with larger hole, visible from inside of outlet end cap (see Figure 3). Fasten leg extensions with provided screws (short).
2.Insert plastic foot ends into each leg ex- tension and set heater to desired angle.
Small post screws on plastic foot will snap into holes in leg extensions.
Cord Cleats
Install cord cleats on side of end caps as shown in Figure 3 with screws provided (short).
Outlet Long screws |
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End Cap Handle | Cord |
| Cleat |
Short
| Leg Extension Screw | |
Small | Fastening | |
Screw (short) | ||
Post | ||
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| Leg Extension |
Plastic Foot
Figure 3 - Handle and Foot Assembly
Theory of Operation
The Fuel System: The hose/regulator assembly attaches to the propane gas supply. For 55/85/125 models, the propane gas moves through the automatic control valve, burn rate adjustment valve and out the injector. For 170 models, the propane gas moves through the solenoid valve, burn rate adjustment valve and out the injector.
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: For 55/85/125 models the high voltage ignitor sends voltage to the spark ignitor. For 170 models direct spark ignitor sends voltage to the spark ignitor. The spark ignitor ignites the fuel and air mixture.
The Safety Control System: This system causes the heater to shut down if the fame goes out. The motor will continue to run, but no heat is produced.
High Voltage Ignitor (55/85/125 | Automatic Control Valve |
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(55/85/125 models only) |
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Models) or DSI (170 Models) |
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| Solenoid Valve | ||||
| Injector |
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Thermal |
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Limit Switch |
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| Power | Hose/ |
Clean |
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| Regulator | |
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| Cord | ||
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| Assembly | ||
Heated |
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| Cool |
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Air Out |
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| Air In |
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(Front) |
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| (Back) |
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Combustion | Spark Ignitor | Fan |
| Motor |
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Chamber | Air For |
| Air For |
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| Combustion |
| Heating |
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| Figure 4 - Cross Section Operational View |
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www.desatech.com119143-01A
