Combustion – Timer – programmer – retarder or condition responsive control – Actuation sequence of electric feed heater and feed flow...
Reexamination Certificate
2006-05-23
2006-05-23
Barnes, Crystal J (Department: 2121)
Combustion
Timer, programmer, retarder or condition responsive control
Actuation sequence of electric feed heater and feed flow...
C431S014000, C431S066000, C431S071000, C219S497000, C236S011000, C700S274000, C327S143000
Reexamination Certificate
active
07048537
ABSTRACT:
An apparatus is provided for controlling a fuel fired heating appliance, the apparatus comprising a first processor for controlling the ignition operation of the furnace and a second processor for controlling the operation of a variable speed blower motor, wherein the first processor sends communication signals to the second processor requesting a desired speed of the blower motor to provide air flow for combustion. The second processor responsively sends a signal to the first processor indicating the receipt of the requested speed for the blower motor. The apparatus further comprises at least one pressure switch, where the first processor senses an opening of the pressure switch and responds by successively sending incrementally higher speed request signals to the second processor until the first processor detects the closing of the at least one pressure switch.
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Jaeschke Horst E.
Juengst Andrew
Barnes Crystal J
Emerson Electric Co.
Harness Dickey & Pierce PLC
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