Fuel control unit for a gas furnace and method of making the sam
Fuel gas supply and ignition system with single valve
Fuel ignition control system
Fuel ignition control system
Fuel ignition system control arrangement providing total fuel sh
Fuel ignition system having contact interlock protection
Fuel ignition system including an igniter providing a lingering
Fuel ignition system providing fuel shutoff under simultaneous f
Fuel valve control system
Gas burner
Gas burner control mechanism
Gas burner control system
Gas burner control system
Gas burner control system
Gas burner control system with cycling pilot
Gas burner controller with main valve delay after pilot flame li
Gas furnace with improved ignition
Gas ignition devices
Gas-supply system for catalytic gas burners
Heating device fed with free-flowing fuel