CONSTRUCTION
The combustion type power heater (heater and accessory assembly) consists mainly of a heater exchanger, a glow plug, a motor, an air fan, an ECU, an engine coolant temperature sensor, an overheating prevention sensor, a flame sensor, an intake pipe, an exhaust pipe and a fuel pump.
This heater is installed between the engine and heater radiator unit sub-assembly. The engine coolant from the engine flows through the spiral passage around the heat exchanger and flows into the heater radiator unit sub-assembly. At this time, the glow plug ignites the air and fuel in the combustion chamber of the heat exchanger, and the resultant heat of combustion heats the engine coolant.
| *1 | ECU | *2 | Motor |
| *3 | Combustion Chamber | *4 | Fuel Pump Assembly |
| *5 | Exhaust Pipe | *6 | Heat Exchanger |
| *7 | Overheating Prevention Sensor | *8 | Heater Switch Assembly |
| *9 | Engine | *10 | Heater Radiator Unit Sub-assembly |
| *11 | Intake Pipe | *12 | Engine Coolant Temperature Sensor |
| *a | Intake Air | *b | Exhaust Gas |
| *1 | Flame Sensor | *2 | Glow Plug |
| *3 | Air Fan | - | - |
| *a | To Heater Radiator Unit Sub-assembly | *b | From Engine |
| *c | Engine Coolant Flow | *d | Fuel |