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.

Combustion Chamber

Ignitor

 

 

Clean

Fan

Motor

 

 

 

 

 

 

Heated

 

 

 

Air Out

 

 

 

(Front)

 

 

Cool

 

 

 

 

 

 

Air In

 

 

 

(Back)

Nozzle

Solenoid

 

Power Cord

 

 

 

 

Valve

 

On/Off Switch

DSI

 

 

Hose/

 

 

 

 

Air For Combustion

Fuel

Regulator

 

Assembly

 

And Heating

 

 

Figure 2 - Cross Section Operational View

VENTILATION

WARNING: Follow the mini- mum fresh, outside air ventila- tion requirements. If proper fresh, outside air ventilation is not provided, carbon monoxide poisoning can occur. Provide proper fresh, outside air ventila- tion before running heater.

Provide a fresh air opening of at least 3 ft2 (0.28 m2) for each 100,000 Btu/Hr rating. Provide extra fresh air if more heaters are being used.

INSTALLATION

WARNING: Review and un- derstand the warnings in the Safety Information section, page

2.They are needed to safely op- erate this heater. Follow all local codes when using this heater.

WARNING:Testallgaspiping and connections for leaks after installation or servicing. Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

1.Provide propane supply system (see Propane Supply, page 3).

2.Connect POL fitting on hose/regulator as- sembly to propane tank(s). Turn POL fitting counterclockwise into threads on tank. Tighten firmly using wrench. Tighten regulator with vent pointing over the hose (see Figure 3, page 5).

3.Connect hose to inlet connector. Tighten firmly using a wrench (see Figure 4, page 5).

IMPORTANT: Extra hose or piping may be used if needed. Install extra hose or piping between hose/regulator assembly and propane tank. You must use the regulator supplied with heater.

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www.desatech.com

109005-01C

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Desa RCLP155AT Theory of Operation, Ventilation, Installation, Provide propane supply system see Propane Supply

RCLP155AT specifications

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