Automatic temperature and humidity regulation – Thermostatic – Hot and cold
Reexamination Certificate
2007-08-14
2007-08-14
Norman, Marc (Department: 3744)
Automatic temperature and humidity regulation
Thermostatic
Hot and cold
C431S022000, C431S024000, C431S075000
Reexamination Certificate
active
10698882
ABSTRACT:
The present invention is directed at systems and methods for detecting flue blockages in an HVAC system without the addition of numerous additional sensor elements, wiring, and connections that can unduly increase the cost and possibly reduce the reliability of the HVAC system. In an illustrative embodiment of the present invention, changes in the output of a flame sensor are used to detect when a likely flue blockage exists.
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Simons Richard
Troost Henry E.
Honeywell International , Inc.
Norman Marc
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