Humidity control can be configured as Humidification, Dehumidification (Separate dehumidification unit / Sequence override) or a combination of the two Humidification + Dehumidification.

The function requires sensor for relative humidity (RH) placed in the ventilated premises or in the extract air duct. The dedicated PIDs regulate Humidification and Dehumidification signals to achieve the setpoint RH value.