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Discuss Replacing Heating Controller With Nest Heat Link in the Central Heating Systems area at ElectrciansForums.co.uk.

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  1. Mike CoverUps
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    Mike CoverUps New EF Member

    Location:
    Coventry, UK
    Hi,

    I'm installing a nest in a vicarage where we'll only be temporarily (3-6 years) so hoping to be able to take it with us when we go, and reinstall the original timer.

    I've had a look at the wiring to the heating controller, and it seems to my mind that this would be the most sensible place to put the heat link (ie. Replacing the heating timer, pictured below). Of course we'd then need to set the main thermostat so that it always was always triggering "on" (ie. Set it to max/30°C)
    IMG_20171112_110513.jpg
    IMG_20171112_110542.jpg
    IMG_20171112_104001.jpg

    The black wires in 3 and 4 here I think must correspond with 3 and 6 on the nest heat link below.
    nestheatlinkwiring.png

    So my question is, do I need to loop from the live/neutral to 2 and 5?

    Does this all make sense, or am I missing anything?

    Many thanks in advance!

    Mike
     
  2. Sparkie30
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    Sparkie30 Regular EF Member

    Location:
    London
    Yeah you correct loop From L to 2 and 5.
     
  3. Mike CoverUps
    Offline

    Mike CoverUps New EF Member

    Location:
    Coventry, UK
    Many thanks!
     
  4. Lee42
    Offline

    Lee42 Lee

    Location:
    England
    Remember the nest thermostat needs wiring back to heat link as it is 12v
    Unless u are not putting it in old thermostat position, and are plugging it in somewhere
     
  5. Mike CoverUps
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    Mike CoverUps New EF Member

    Location:
    Coventry, UK
    Thanks. I plan to plug the thermostat in separately a have it on a stand.
     
    • Like Like x 1
  6. diditrain
    Offline

    diditrain Electrician's Arms

    Location:
    north west
    Terminal 3 on your old clock backplate is hot water on and 4 is for heat
     
  7. Mike CoverUps
    Offline

    Mike CoverUps New EF Member

    Location:
    Coventry, UK
    Yes, you're right diditrain - good spot! I'll label them up before I remove them.
     
  8. Soulsurfer
    Offline

    Soulsurfer Electrician's Arms

    Location:
    Channel Islands
    Brilliant piece of kit the nest gear, just put in loads of them hard wired and also on stand via nest weave and it works flawlessly.
     
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