Field Controls Fad-6 Fresh Air Damper

Our fresh air dampers remains closed until instructed to open by the healthy home system control. It then opens to allow fresh air to be pulled into the return plenum where it is mixed with conditioned air, filtered, and distributed to the rest of the house. The fresh air damper (fad) is a motor driven damper activated by the healthy home system control. When there is a call for fresh air, the hhsc opens the damper allowing fresh air to enter the HVAC return. When the hhsc is satisfied, the damper is closed.