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Main Components and Operating Concept
Main parts of PHP-52W Engine Heaters
Here is a basic overview of the operation of the heater.
• Fuel is delivered to the heater via the heater’s fuel pump.
• Combustion air is delivered to the heater via the heaters 12v combustion air blower.
• Fuel is atomized and the fuel / air mixture is ignited using a glow pin.
• The flame is contained in a flame tube and exhaust gases expelled.
• The heater’s coolant pump takes cold coolant from the engine, circulates it through the heater’s
water jacket, then it pumps hot coolant back to the engine.
*Figure O2
