Ventilation controller
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United States of America Patent
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Aug 25, 2015
Grant Date -
Apr 2, 2015
app pub date -
Dec 11, 2014
filing date -
Dec 7, 2004
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Abstract
A ventilation system for a building in some cases includes a main HVAC blower for moving temperature-conditioned air through the building plus a smaller ventilation blower for providing fresh air. A controller regulates the ventilation blower's speed to provide a target ventilation flow rate regardless of changes in the pressure differential between the indoor and outdoor air. To ensure that the target rate is appropriate for a particular building, the target flow rate is determined based on a ventilation setting that reflects a specified number of bedrooms and a specified amount of floor space of the building.
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