Hive Heating install with Ravenheat 820/20

[LoftyLandy]

I have bought the heating and hot water version even though my boiler is a combi so I am covered if I change boiler type etc

Cant get it to work boiler as only have 2 wires that go to / from old thermostat and this hive version has no common slot - Thermo seems to have a common and a call for heat cable

All hive stuff is working just not boiler

Any ideas ?

 

[stem]

It depends on the boiler and how it is wired up in your home. The single channel version of the Hive is designed specifically for Combi boilers and has a single volt free contact that can be used with any of the voltages commonly used by combi boilers eg 24v or 230V.

The dual channel Hive is really designed for controlling motorised valves and not boilers directly. Motorised valves are all operated by 230V and so the common is linked internally to the 230V live terminal. Meaning the dual version can only be used with 230V.

Don't try to connect a dual channel Hive to your boiler without ascertaining how it is wired. If you put 230V onto a circuit designed to operate on 24v, it will cause some serious damage.