How to connect the Communication Module

The Wiser system currently supports OpenTherm only in conjunction with a combi boiler and a 1 channel Wiser HubR. If your boiler supports OpenTherm, follow the instructions below.

Existing OpenTherm Installation: 

1. Remove the OpenTherm cables from the existing controller or thermostat.
2. Remove the Communication module from the rear of the HubR
3. Set the OpenTherm cables into the Communication module. Cables can be wired any way.
4. Replace the Communication module into the HubR
5. Mount the HubR on the backplate. When OpenTherm connection is detected, Wiser Home app will automatically set-up Communication modulation as control type without asking for any configuration.

Re-wiring to OpenTherm from standard installation Any motorised valves must be disconnected and set to open. Then follow steps 2 – 5 above to wire in the Communication module.

If you are fitting a new system or require rewiring, contact an installer.

NOTE:  HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Safe electrical installation must be carried out only by skilled professionals. Skilled professionals must prove profound knowledge in the following areas: 
• Connecting to installation networks. 
• Connecting several electrical devices. 
• Laying electric cables. 
• Safety standards, local wiring rules and regulations. 
Failure to follow these instructions will result in death or serious injury