Humidifier or Dehumidifier Control with a CCU

|Wiring

Follow the wiring schematic below. 

To make the Auxiliary 1 (Relay 7) a dry contact you must remove the jumper at J21 on the CM board. 

|Configuration

In Setup > Settings > System Equipment you will need to check the box to the left of Auxiliary 1 (Relay 7) a humidifier or dehumidifier you will use the drop down to the right to select the equipment you are controlling. This selection will affect how the system uses this relay.