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Nest 3rd Gen - Replacing Salus RT500RF

Discussion in 'Plumbing and Central Heating' started by J Holland, 2 May 2019.

  1. J Holland

    J Holland

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    Another Nest thread, so whilst I have done a lot of reading and not found an exact match of my scenario, hopefully this confirmation rather than asking for answers from scratch.

    Existing Salus RT500RF wiring show here, heating control only, for a Viessmann Vitodens 100 combi boiler.

    My theory is:
    - existing brown/blue wires going into Salus L/N will go into corresponding L/N connectors of the Nest Heat Link
    - single brown wire going into NO/normally-open of Salus will go into connector 3/call-for-heat of Nest Heat Link
    - jumper wire between L and COM/linked-live of Salus needs to be replicated, so put a jumper wire between L and 2/common of Nest Heat Link

    Hope that makes sense, and is correct!?
    Thanks in advance :)
     
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  3. Sounds like it to me.
     
  4. J Holland

    J Holland

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    Thanks @undertrained

    For anyone else who find this thread in future, it did work as described above :)
     
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