The Anden Dehumidifier Model A320 is designed to dehumidify the air coming into the unit by passing the incoming air over an evaporator coil to drop the air temperature below the dew point of the air.  Moisture is removed from the air and drained out of the unit to a common floor or waste drain.  The air is then reheated in the condenser coil and exits the unit.  Dehumidification occurs until the set point is reached, then shuts off until the control determines a need for operation.