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Drayton wiser hub install to replace Honeywell BDR91

Discussion in 'Home Automation' started by Ws6an, 10 Sep 2019.

  1. Ws6an

    Ws6an

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    i’ve just invested in a Drayton Wiser smart thermostat and am considering whether this is something I can install myself. My boiler (combi) is less than 2 years old and is controlled by a wireless Honeywell thermostat at present. The receiver I need to replace is a Honeywell BDR91 wireless receiver which is located next to my boiler. Does anyone have any experience of replacing one of these with a Drayton wiser hub? Is it easy? Are there any instructions anyone can point me to?

    Many thanks

    Steve
     
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  3. stem

    stem

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    It's just a matter of moving the existing wires from the BDR91 to the the terminals of the Drayton that have exactly the same function.

    The BDR is:

    bdr.JPG

    The Drayton Single Channel (Combi) version is:

    wiser.JPG

    So from the above diagrams:

    BDR N = Wiser N
    BDR L1 & L2 = Wiser L
    BDR A = Wiser COM
    BDR B = Wiser 3

    There shouldn't be a wire in BDR C, that's normal.

    Only if there is presently a link inserted between L & A at the BDR, will you also need to fit the link between L & COM at the Drayton. Do not fit the link if it's not there already.
     
  4. Ws6an

    Ws6an

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    Thanks so much. I will give this a go over the weekend
     
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