Nest to Vaillant

[turbo]

Hi Guys , just got myself a Nest Gen3 thermostat, but am a bit bewildered with these connections on my boiler.
Its a Vaillant Eco Tec plus 837 with theVRC 470f controller.
Any help would be appreciated , I am a electrician but not on boilers.

 

[ShaunCorbs]

Sorry to say unless your gas safe you can't get access to the pcb as its breaking the law

 

[rpm]

Hi turbo, frustrating as it is, it is all to do with casings forming a safe seal when removed and replaced.

 

[Chalked]

If you have a vr70, why go for nest? They will fight each other :96:

 

[turbo]

Plan is to remove the vr 470

 

[Rickster123]

Plan should be to get a gas safe engineer in.