... Heater Series Work Principle : The main electric motor drives high pressure oil pump and fan rotating. The fuel from the ... exhaust outlet.Features:1 . High speed of ignition < 12 S , noise of burning < 68dB ;2 . More reliable ... Liquid Heater / Water Heater Series includes: Electric motor , Fuel pump , Thermal control , Solenoid valve , Control box , Big electric fan , Ignition , Glow plug , Sensor ...