Multiple stage heating apparatus

摘要

A heating apparatus (11) includes at least first (19) and second burners (21) located in a combustion chamber (15) wherein the burners are separated by a divider (23) for deterring uncombusted fuel flowing from a firing burner area (103) to an area (105) adjacent to a non-firing burner. In another aspect of the present invention, the burners are used to heat water in a multiple staged heater.