American Standard International Inc.

American Standard Inc.

Radhakrishna Ganesh

Brian J Fiegen

Jeffrey A Moore

David Marshall Foye

Thomas J Clanin

A VAV air handler includes a cooling coil with a return air bypass damper for improved dehumidification. The bypass interjects into the supply air a portion of relatively warm, dry return air downstream of the cooling coil. This allows the cooling coil to absorb more latent heat from the incoming outside air and the remaining portion of the return air over a broad range of operating conditions, but especially at low load conditions.

Air handler with return air bypass for improved dehumidification

A method of operating an HVAC system having an HVAC control and a humidity limiting control. The method comprises the steps of: determining a relative humidity limit for a space; monitoring relative humidity in the space; comparing the relative humidity to the relative humidity limit; operating the conventional HVAC control if the space humidity does not exceed the humidity limit; and integrating the HVAC control and dehumidification controls if the space conditions require humidity limiting action.

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Onalaska, WI, United States of America

Radhakrishna Ganesh