CONTROLLER FOR GAS FUELED HEATING APPARATUS

摘要

The device is used for controlling the heaters such as a water heating boiler or FF type warm air heater, which heat fluids such as water passing through the inside of a heat exchanger, or air passing on its outside. The device comprises gas tube (20) for supplying fuel gas via nozzle (21); governor proportional valve (25) for varifying the second pressure of gas according to the application of electric current; electromagnetic valve (22) for closing the tube (20); orifice (24) having a diameter smaller than the nozzle diameter in shut-off of the valve (22); controller (30) for controlling the heater; volumeter (35) for setting a temperatue of hot water; thermistor (31a) for detecting temperature of the water.