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Swap wunda 91.713 thermostat with nest E wiring UK

Discussion in 'Plumbing and Central Heating' started by peeping, 31 May 2020.

  1. peeping

    peeping

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    Hello guys. was hoping to get some help with the wiring installation as the nest installation instructions are absolutely futile.

    I have a nest gen 1 controlling hw, boiler and radiators throughout my house and a wunda thermostat controlling the wet ufh in a separate zone. to install the heat link, i need to know which of my existing wires go into the nest e and the nest instructions does not tell me that. see photo below.

    many thanks for your help guys.

    https://www.diynot.com/diy/media/albums/wunda-thermostat.27099/
    [​IMG]
     
  2. ianmcd

    ianmcd

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    Existing L into Com on nest E
    Black wire in L1 to NO on nest E
    safely isolate and tuck away the N it isnt used on the nest E
     
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  4. peeping

    peeping

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    thanks Ian, ive wired it up but the floor is too warm to test now. will give it a go tomorrow. fingers crossed! thanks again
     
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  5. peeping

    peeping

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    its working, cheer Ian.
     
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