Dual fuel heater
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United States of America Patent
Stats
-
Nov 17, 2015
Grant Date -
Apr 25, 2013
app pub date -
Oct 24, 2012
filing date -
Oct 25, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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