Patent ID: 7494337

Claim:
An apparatus for providing multiple stages of fuel, comprising: a single burner for production of a flame at a burner face, said burner comprises: a housing having an upper wall, a lower wall, a rear wall, two opposing sidewalls and said burner face, said burner face is defined by said opposing sidewalls, said upper wall and said lower wall; a divider within said housing to divide said housing into a first section and a second section, said first section and said second section operate independent from each other; and a plurality of identical burner chambers within said first section and within said second section, said burner chambers being longitudinally adjacent and opening to said burner face, said plurality of burner chambers of said second section being greater in number than said plurality of burner chambers of said first section; a plurality of heat exchangers positioned adjacent face of the burner to receive said flame; a first fuel supply line for supplying fuel to said first section of said burner chambers, said first fuel supply line attached to said upper wall; a second fuel supply line for supplying fuel to said second section of said burner chambers, said second fuel supply line attached to said upper wall, wherein said first supply line supplying fuel to said first section is independent of the supply of said fuel to said second section by said second supply line; and an igniter positioned at said burner face for igniting said fuel supplied by said first supply line to said first section of chambers at said face.