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Changing Grasslin Tonerchron qm1 to R17-1 Zone time switch

Discussion in 'Plumbing and Central Heating' started by pascaloneill, 28 Nov 2021.

  1. pascaloneill

    pascaloneill

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    maggie 1.png maggie 2.png maggie 3.png Can anyone help me out on changing this Grasslin QM1 to the EPH R17-1 or can I just change the white wire on the QM1 (common) to the common on the R17. Would be grateful for any help. EPH R17 last image
     
    Last edited: 28 Nov 2021
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  3. stem

    stem

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    You have answered your own question.

    The photo of the Grasslin QM1 connections you posted are:

    Capture.JPG

    and the photo of the EPH R17:

    Capture1.JPG

    The wires move from the terminals of the Grasslin to the terminals of the EPH R17 that have exactly the same function.

    So:

    N=N
    L=L
    Comm=Com
    On=On
    Off=Off

    Ignore the terminal numbers, that's manufacturer specific, it's the function [ie what the terminals do] that is important.
     
  4. pascaloneill

    pascaloneill

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    Thank you very much Stem
     
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