System and method for conditioning air

A humidity control system comprising,

• a dehumidifier;
• a damper assembly configured to selectively switch a flow of air between ventilation air from an external environment surrounding a building and conditioned air from a space within the building;
• and
• a humidity controller communicably coupled to the dehumidifier and the damper assembly, the humidity controller configured to:
• receive a relative humidity of the conditioned air within the building;
• control the dehumidifier to modify the relative humidity based on a relative humidity set point to satisfy a space dehumidification demand;
• determine a dew point of the conditioned air and a dew point of the ventilation air after the space dehumidification demand is satisfied;
• update a dew point set point based on the dew point of the conditioned air;
• and
• control the dehumidifier to modify the dew point of the ventilation air entering the building to satisfy the dew point set point.

A non-transitory computer-readable medium comprising computer-executable instruction stored thereon that when executed by at least one processor, causes the at least one processor to:

• receive a relative humidity set point and a relative humidity of conditioned air within a building;
• control a dehumidifier assembly to modify the relative humidity of conditioned air based on the relative humidity set point to satisfy a space dehumidification demand;
• determine a dew point of the conditioned air after the space dehumidification demand is satisfied;
• update a dew point set point based on the dew point of the conditioned air;
• and
• control the dehumidifier assembly to modify a dew point of ventilation air entering the building to satisfy the dew point set point.