Volkera easy heat plus 32c & Nest

[Charliejames99]

Hi. I’m having a problem with a volkera easy heat plus 32c. There was heating but no hot water when wired to the nest wiring diagram as the boiler needed permanent power. I’m now having problems controlling the temperature. Just want to clarify what goes where on CN5 to the nest hub.

 

[ianmcd]

The two wires from CN5 on the boiler go to 2&3 on the Nest heat link, either way round does not matter, your boiler requires a permanent 230vAC supply, as does the heat link, these have to come from the same source, DO NOT make any links in the Nest hub, you cant control the HW from the Nest you have a combi it is controlled by you opening a hot tap

 

[Charliejames99]

Thanks for your reply. I was unsure on that as it says 24v on the wiring diagram for volkera and 230v on the nest diagram

 

[ianmcd]

Thanks for your reply. I was unsure on that as it says 24v on the wiring diagram for volkera and 230v on the nest diagram

No if you read it properly it says 240v L&N input power this is to power the nest to run, the switching contacts are voltage free and that is why you do not use any links so that it is switching 24v