Variable output heating and cooling control
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United States of America Patent
Stats
-
Nov 13, 2007
Grant Date -
Jul 21, 2005
app pub date -
Mar 15, 2005
filing date -
Sep 10, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heating or cooling system, such as an HVAC system, of variable output has a number of control elements and may include a variable speed compressor, a variable speed combustion (induced or forced draft) blower motor; a variable speed circulator blower motor; a variable output gas valve or gas/air premix unit; and a controller specifically developed for variable output applications. The system may utilize a pressure sensor to determine the actual flow of combustion airflow in response to actual space conditions, vary the speed of the inducer blower, and subsequently vary the gas valve output to supply the correct amount of gas to the burner system. A temperature sensor may be located in the discharge air stream of the conditioned air to provide an input signal for the circulator blower.
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