Patent ID: 6488081
Filing Date: 2002-12-03
Classification: F24F

Abstract:
A method for conditioning air within one or more zones, comprising the steps of:sensing a first temperature representative of the temperature of the air to the one or more zones; operating a conditioning unit having a heating stage, a cooling stage, a fan, and an economizer in a conditioning unit mode by activating at least one of the heating stage, the cooling stage, and the economizer to supply conditioned air to the one or more zones when the first temperature is outside of a first predetermined temperature range; operating the condition unit in a ventilation mode to supply ventilation air to the one or more zones when the first temperature is within the first predetermined temperature range; sensing a second temperature representative of the temperature of the air supplied to the one or more zones from the conditioning unit; and activating at least one of the heating stage, the cooling stage, and the economizer when the conditioning unit is operating in the ventilation mode and the second temperature is outside of a second predetermined temperature range.