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Hive Wiring for Worcester green Star 28i

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

  1. Matt Bezant

    Matt Bezant

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    Hi all, I'm hoping someone can help identify the wires under the combi boiler.

    There was once hive installed however the previous owner has taken the reciever and install a standard danfoss thermostat.

    This is how it has been left.

     
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  3. EFLImpudence

    EFLImpudence

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    Can't say with any certainty.

    Could you separate the connectors so we can at least be sure what is connected to what?

    Also pictures of the other ends of both cables.
     
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  4. Matt Bezant

    Matt Bezant

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    Hi hope this helps
     

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    Last edited: 5 Apr 2019
  5. Matt Bezant

    Matt Bezant

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    Another picture IMG_20190405_072747.jpg
     
  6. jasonzyx

    jasonzyx

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    Look at the agreement with your solicitor. Decide between yourselves whether it was included in the items to be left with the sale, or excluded.
    If your solicitor decides it should have been left behind, you have a case with the seller, to make good or costs to reinstate it.
    Otherwise, continue as you are in trying to rectify the situation.
     
  7. Matt Bezant

    Matt Bezant

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    I'm not too fussed Jason, I mean I would've taken it with me if I was in their shoes. Would just like to have hive back as very convenient for myself. Thanks anyway
     
  8. Do you have a multimeter?
     
  9. stem

    stem

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    As @EFLImpudence said we need to know what is on the other end of each of the wires.

    Unfortunately the colour of the wire used for a particular function would have been chosen according to the personal preferences of the original installer. So, for example the black wire in one installation may have a different function to the black wire in another installation. The only way to know what a wire actually does, is to find out what it is attached to each end of it.
     
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  11. Matt Bezant

    Matt Bezant

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    Ok, thanks all for your help so far. Will get some more pictures after work
     
  12. Matt Bezant

    Matt Bezant

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    @SammyInnit

    I don't have one but can pick one up if required.
     
  13. ianmcd

    ianmcd

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    Easiest way would be to remove the cover on the Danfoss thermostat and post a pic of the wiring in there we will be able to follow them from that
     
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  14. Matt Bezant

    Matt Bezant

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    I will do once at home @ianmcd
     
  15. Matt Bezant

    Matt Bezant

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    MVIMG_20190405_180410.jpg Pic of danfoss backplate @ianmcd
     
    Last edited: 5 Apr 2019
  16. Matt Bezant

    Matt Bezant

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    Grey cable goes through wall to thermostat and white one to boiler as pic shows. IMG_20190405_180822.jpg IMG_20190405_180822.jpg
     
  17. stem

    stem

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    That's only half of the story. ie one of the two cables. I assume that it's the grey twin and earth cable that goes to the thermostat and not the white flex? It's not clear in the photo, and we still don't know where the other cable goes?

    Anyway from what you have posted, we can identify that the brown and black wires at the existing thermostat are the switching wires, they would have gone to the Hive (Single Channel) Receiver terminals which are marked the exactly the same as your current thermostat. So:

    The brown wire now in the thermostat terminal 2 'Com' = would have gone to Hive terminal 1 'Common'

    Black wire with brown sleeve now in the thermostat terminal 3 'N/O' = would have gone to Hive terminal 3 Heating on (NO)

    Your existing thermostat will be battery powered, but the Hive receiver is mains operated so in addition needs a permanent 230V mains supply connected to N & L to provide it with the power to operate. I can't really comment further on that without knowledge of the other cable.
     
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