Apparatus for controlling gas supply
Apparatus for controlling the supply of gas to and heat from unv
Automatic fuel ignition system with redundant flame sensing
Bilevel flame signal sensing circuit
Burner and pilot valve safety control system
Burner control device, system and method of making the same
Burner control device, system and method of making the same
Burner control device, system and method of making the same
Burner control device, system and method of making the same
Burner control system with continuous check of hot surface ignit
Burner control system with cycling pilot burner
Burner ignition system
Burner ignition system
Burner ignition system
Burner system
Burner system with absorbent carbon flame responsive switch
Centralized automatic pilot/pilotless ignition control system
Combination control with high/low pilot gas flow
Combustion detection apparatus
Combustion heating apparatus to improve operation of gas pilot b