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Fitting Hive or Nest to Glow-Worm 38cxi

Discussion in 'Plumbing and Central Heating' started by SteveD88, 16 Feb 2021.

  1. SteveD88

    SteveD88

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    Looking for some advice for what will be the most straightforward to install out of Nest 3rd gen or hive single channel thermostat to my Glow-worm 38cxi combi boiler, which is currently wired to a Honeywell t40 thermostat and has a dial programmer fitted.

    See photos of current setup and manual.

    Blue and red wire from thermostat 1 and 3 go to the voltage free heating controls.

    Boiler is powered by a 3 pin plug, white cable enters boiler here (below photograph).

    Any advice will be much appreciated.

    Cheers,
    Steve
     
  2. ianmcd

    ianmcd

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    You can use either, but if using the nest do not make any links that you may have seen on other posts
     
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  4. SteveD88

    SteveD88

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    What would be the best way to run a L, N and E to the Nest Heat Link if the boiler is currently on a plug?

    Would I also just connect the 2 wires currently going to the thermostat to the heat link terminals 2 and 3?

    Thanks
     
  5. ianmcd

    ianmcd

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    Nest doesnt need an earth, your boiler shouldnt be run by a 3 pin plug, the L&N for the nest must come from the same supply as the boiler
     
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