You are going to need to use two UH8-RF V2 wiring centres, one as a primary wiring centre, the second as a secondary wiring centre. On the secondary wiring centre, wire the extra zones into the secondary wiring centre.
The primary wiring centre would wire the remaining actuators, the pump, the valve and the Heat/Cool Enable terminals using C and NO terminals. If you are controlling hot water, wire the hot water into the Primary UH8-RF V2.
- On the secondary wiring centre, press the link button until the WIFI sign flashes. Release the button.
- On a spare zone on the Primary wiring centre hold down the zone button on a spare zone until the light starts to flash, Release the button
- Both lights should go out.
- Ensuring that you have a thermostat paired to the secondary wiring centre, turn the heating up, you should see the zone light on the secondary wiring centre come on, plus the paired zone on the primary wiring centre, along with the pump and flame icons.