Advice on wiring Nest Thermostat E to Alpha Eco Combi Boiler

Discussion in 'Electrics UK' started by Obow, 24 Oct 2021.

  1. Obow

    Obow

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    Hi, I.m looking to add a Nest Thermostat E to my Alpha Eco Boiler.

    The boiler has no room stat but just a timer.

    My understanding is that I should leave the timer in and set it to always on. I should then remove the link connecting 1 and 2 and run instead two wires from 1 to NO/Call for heat and 2 to Common in The Nest E Heatlink.

    Is this correct? I've attached images showing the wiring diagram and how the boiler is currently wired. Thanks very much.
    IMG_3946.JPG IMG_3947.JPG Screenshot 2021-10-24 at 18.01.18.png
     
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  3. CBW

    CBW

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    Yep, pretty much it. Just be certain that removing the cover isn’t part of the combustion circuit, otherwise it’ll need checking for safety by a gas safe registered engineer.
     
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  4. Obow

    Obow

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    Thanks. How do I know that? The main cover of the boiler stays on and just the electrical part folds down currently.
     
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  5. winston1

    winston1

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    Not a legal requirement. He can check it himself if he is competent.
     
  6. CBW

    CBW

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    Yes it is, if he’s not competent, given the above statement, I’d say he isn’t.
     
  7. CBW

    CBW

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    If the electrics are separate, then that’s fine. You only know by looking in the boiler instructions, but as I said, if the electrics are separate, then your fine.
     
  8. winston1

    winston1

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    Please state the law (not hearsay) that says that.
     
  9. CBW

    CBW

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    Here’s some information from the gas safe website regarding who can remove the cover on a boiler
     

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  11. winston1

    winston1

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    That does not answer my post.
     
  12. CBW

    CBW

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    How so?
     
  13. winston1

    winston1

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    You have not stated the law you claim exists.
     
  14. CBW

    CBW

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    Gas law does exist, it’s not a claim, and working on an appliance is included in that law: Gas safety installation and use regulations 1998 all the information is in there.
     
  15. CBW

    CBW

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    Can you prove to me that the law doesn’t exist or even prove he is legally allowed to work on a gas appliance?
     
  16. winston1

    winston1

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    I asked you to state the law which you have failed to do. Therefore i assume it does not exist.
     
  17. CBW

    CBW

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    See post #12, I haven’t failed anything.
     
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