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Nest with Glow Worm Betacom 30c

Discussion in 'Plumbing and Central Heating' started by TheSirSpence, 4 Apr 2019.

  1. TheSirSpence

    TheSirSpence

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    SOLUTION:

    The solution is the following:

    [​IMG]

    Could not have come up with it without the help of @ianmcd


    Hi all,

    I have had my boiler switched out from an very old (1990s) boiler to a Glow Worm 30c.

    I had a Nest configured on this by an official installer, I believe he used the Y Plan configuration.

    The new boiler is installed but the Nest is not connected in any way. I believe it should be easy enough to do, but I need a little guidance.

    Here are what I believe are the relevant diagrams:

    NEST

    [​IMG]

    BOILER

    [​IMG]

    Is that really all there is to it, two wires between the boiler and heatlink? How do I turn off the timer on the boiler? do I need to remove either of the loops under X106 on the second diagram?

    One of the confusing things I am seeing in my research is this diagram:

    [​IMG]

    I know its for a slightly different boiler the 30CX rather than 30C, but that seems to indicate 4 wires..... which is fine, but I do not see a 0v socket on the boiler.

    Would someone mind pointing me in the right direction please?
     
    Last edited: 8 Apr 2019
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  3. ianmcd

    ianmcd

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    2&3 from the nest are connected to your boiler at plug X106, you will see the terminals marked 24vRT you remove the link (if still fitted) and connect the two nest wires to here, do not put 240v into those terminals
     
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  4. TheSirSpence

    TheSirSpence

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    Thanks Ian, If I am reading it right, does this mean it will look like this:

    [​IMG]

    Also it doesn't seem clear which way round 2 and 3 connect to in X106
     
    Last edited: 5 Apr 2019
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  5. ianmcd

    ianmcd

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    yep that is correct, doesnt matter which way round in X106 its just a switch
     
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  6. TheSirSpence

    TheSirSpence

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    THANKS IAN!! I think it is all wired up and connected correctly, do I need to set the boiler to any particular setting to get the heating to come on or off? at the moment it is set to the timer but ideally I would want that off entirely.

    UPDATE: It is working, I have it set to on and the Nest seems to take control.
     
    Last edited: 4 Apr 2019
  7. ianmcd

    ianmcd

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    just set the timer to constantly on, and the nest will control everything
     
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  8. TheSirSpence

    TheSirSpence

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    Awesome thanks so much Ian
     
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