Flame rectification sensor employing pulsed excitation
Fluidized bed combustion chambers
Fuel burner control system with selectable standing pilot mode
Fuel control system, control device therefor and methods of maki
Fuel control system, control means therefor and methods of makin
Fuel saving pilot control valve
Gas burner and a gas powered heating device
Gas oven burner control method and apparatus
Gas oven control with proof of ignition
Gas valve shut off method and apparatus
Heat exchanger system, fuel control system therefor
Heat exchanger system, fuel control system therefor and methods
Heat exchanger system, fuel control system therefor, and methods
High velocity burner, system and method
Hot surface ignition system for a gas furnace and method of maki
Hot surface ignition system for a gas furnace, control device th
Ignition system for a gas appliance
Ignition system for post-mixed burner
Ignition system with delay switch for a gas appliance
Limited recycle for primary controls