Patent ID: 6112741
Filing Date: 2000-09-05
Classification: F23L

Abstract:
A gaseous fuel-fired heating apparatus comprising:at least one combustion chamber wall defining a combustion chamber having a gaseous fuel inlet, a combustion air inlet, and a flue gas outlet;at least one mixing chamber wall defining a mixing chamber having a flue gas inlet in fluid communication with said flue gas outlet, a dilution air inlet, and a mixing chamber flue gas outlet;an induced draft blower removably secured to said at least one mixing chamber wall having a blower flue gas inlet in communication with said mixing chamber flue gas outlet, and a vent gas outlet connectable to one of a high temperature vent and a low temperature vent; andmeans for converting said apparatus between a high temperature vent mode and a low temperature vent mode, said means disposed between said mixing chamber and said induced draft blower.