Vokera & Nest - Saga of the Install

Gorie

Firstly I realise this is Nest installation post number ten billion - I've looked around online for ages.

My new house has a Vokera boiler and I have spent most of the morning looking at wiring diagrams and scouring the internet... There is very little on Vokera and Nest.

I have removed my nest heat link from the Veissmann boiler in my old house (I installed this - it worked fine) and am trying to figure out the wiring for the heat link in my Vokera. At present I kind wish I had taken the boiler with the nest.

I have the Vokera Vision 25C and its a Nest 3rd Gen.

I basically know where to get the Live and Neutral from. I am wondering where to wire the heating controls in... The wiring diagram is in the instruction book (link below). Essentially do I wire them into the M2 thermostat control on the diagram? Or the CN5 circuit board?

My options are CN5 as then I can leave the boilers inbuilt controls off or use them as an override... Or wire into M2 and set the boilers own built in controls to have the central heating constantly on...

Have I got this right? Any advice would be greatly appreciated.

Many thanks.

PS Boiler instruction manual is here: https://www.vokera.co.uk/wp-content...C-User-Installation-and-Servicing-manual2.pdf

Alex1983

M2 and leave the boilers current time on 24/7 is the easy. M2 is low volt so make sure you know where to connect so you don't fry your pcb or heat link.

Gorie

Thanks for the help. Did it as above and it all works fine!