Patent ID: 6973795

Claim:
A refrigerant system for conditioning air for a comfort zone, the refrigerant system comprising: an enclosure defining an upstream air passageway, a downstream air passageway, and an intermediate air passageway therebetween, wherein the air passes sequentially through the upstream air passageway, the intermediate air passageway, and the downstream air passageway; a cooling coil disposed in the enclosure; a source associated with the cooling coil and providing a chilled fluid thereto; a blower in a position to force the air from the downstream air passageway into the comfort zone; a desiccant wheel able to absorb moisture from the air passing from the intermediate air passageway to the supply air passageway and simultaneously release moisture to the air passing from the upstream air passageway to the intermediate air passageway; and a controller connected to selectively start and stop the source and selectively energize and de-energize the desiccant wheel for rotation, wherein the controller upon starting the source energizes the desiccant wheel for a predetermined limited period, whereby the desiccant wheel during the predetermined limited period helps absorb moisture that may vaporize from the cooling coil before the cooling coil is sufficiently cool to condense moisture from the air.