Abstract: A dual fuel heater (10) includes a pressure regulator converter (11) in fluid communication with a control valve (21), which in turn is in fluid communication with a selector valve (40) through a NG/LP pilot line (48) having a splitter (49) to form a NG pilot line (50) and a LP pilot line (51) extending to an LP pilot nozzle (67). The selector valve is moveable between an NG “on” position wherein fuel entering the selector valve passes to a burner (60) and to a NG pilot nozzle (65), and an NG “off” position (LP “on” position) wherein fuel passes to the burner and not to either the NG pilot nozzle or the LP pilot nozzle. The NG pilot nozzle is oriented so that its flame heats the first thermocouple associated with the NG pilot nozzle and ignites fuel expelled from the LP pilot nozzle.

Abstract: A dual fuel heater (10) includes a pressure regulator converter (11) in fluid communication with a control valve which in turn is in fluid communication with a selector valve (40) through a NG/LP pilot line (48) having a splitter (49) to form a. NG pilot line (50) and a LP pilot line (51) extending to an LP pilot nozzle (67). The selector valve is moveable between an NG “on” position wherein fuel entering the selector valve passes to a burner (60) and to a NG pilot nozzle (65), and an NG “off” position (LP “on” position) wherein fuel passes to the burner and not to either the NG pilot nozzle or the LP nozzle. The NG pilot nozzle is oriented so that its flame heats the first thermocouple associated with the NG pilot nozzle and ignites fuel expelled form the LP pilot nozzle.