A maximum of one room can be configured on each DXR2 room automation station. The room can consist of a maximum of one supply air and extract air VAV. You must create a multisegment application with multiple DXR2s if you need to use multiple VAV for supply or extract air. Any combination of supply air and extract air VAV can be created with DXR2. The VAV can even have various sizes and nominal air volume flows.
The standardized room control with controller signals 0…100% always controls all connected VAV actuators for supply and extract air as per their nominal volume flow and provide the correct amount of volume flow.
Room control attempts to compensate for a loss of a VAV actuator by using operational VAV to provide the missing volume flow.