Patent ID: 9599363
Date: 2017-03-21
CPC Classifications: F24F

Claim:
1. An air handler comprising: a plurality of cooling coils separated into separate sections along a lineal direction, said cooling coil sections defining edge regions proximate to adjacent ones of said cooling coil sections; at least one guide member disposed adjacent to one side of said cooling coil sections, and extending at least in part along said lineal direction; an air curtain disposed on said one side of said plurality of cooling coils and having a terminal end and at least on engaging portion, wherein said air curtain being flexible for furling and unfurling to selectively cover selected ones of said cooling coil sections at least generally along said lineal direction with said at least one engaging portion of said air curtain engaging said at least one guide member; means for furling said air curtain to remove said air curtain from covering said selected ones of said cooling coil sections and for unfurling said air curtain for extending to cover said selected ones of said cooling coil sections; at least one position sensor which is disposed proximate said air curtain and detecting when said air curtain is disposed for locating said terminal end of said air curtain proximate a selected one of said edge regions of respective ones of said cooling coil sections; a drive motor connected to said means for furling and configured for rotating an end of said air curtain in a first angular direction for furling said air curtain, and rotating said end of said air curtain in a second angular direction for unfurling said air curtain and covering selected ones of said cooling coil sections along said lineal direction; and a controller for selectively locating said terminal end of said air curtain and operating said drive motor to furl and unfurl said air curtain for locating said terminal end of said air curtain to determine whether air flow is passed through respective ones said cooling coil sections disposed along said lineal direction.