Timer relay control board
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United States of America Patent
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Jun 30, 2009
Grant Date -
Sep 6, 2007
app pub date -
Aug 1, 2006
filing date -
Aug 2, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A heater (12) includes a burner (16), a valve (20), and an inducer (18). A thermostat (24) is electrically coupled to the heater (12) and a control board (44) is disposed in the heater (12) and electrically connected to the thermostat (24). The control board (44) includes an inducer relay (50), a valve relay (52), and a control timer (54) for switching the valve (20) between a high flow stage and a low flow stage and the inducer (18) between a high speed stage and a low speed stage, respectively, wherein the inducer relay (50), the valve relay (52), and the control timer (54) are mounted to the control board (44) to define a singular and compact controller (30).
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