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  1. turbo

    turbo New Member

    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. IMG_5242.jpg
    Any help would be appreciated , I am a electrician but not on boilers.
  2. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Sorry to say unless your gas safe you can't get access to the pcb as its breaking the law ;)
  3. rpm

    rpm Trusted Plumber Top Contributor!!

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

    Chalked Plumber GSR

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

    turbo New Member

    Plan is to remove the vr 470
  6. Rickster123

    Rickster123 Guest

    Plan should be to get a gas safe engineer in.
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