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  1. S

    Installing CM927 on valliant ECOMAX

    Dan, very much appreciated, controller in and working. If I can every return the favour with IT related queries please let me know.
  2. S

    Installing CM927 on valliant ECOMAX

    So would that be Vaillant - 927 L - L L - 3 4 - B 5 - N
  3. S

    Installing CM927 on valliant ECOMAX

    So it definitely needs 4 connections I can't use a 3 pair and connect the second L to the A
  4. S

    Installing CM927 on valliant ECOMAX

    Hi, would anybody be able to offer some assistance. I understand that on the vaillant pin outs 3, 4 and 5 are the area to connect, but I am unsure how to connect the 927 to these connects
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    Installing CM927 on valliant ECOMAX

    I'm all for the universe making me a better idiot. In this instance though its the CM927 as listed in my original post, I'm not sure what type of ECO Max boiler it is.
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    Installing CM927 on valliant ECOMAX

    Hi. Firstly, thank you if a response is given to my query. I have seen a few post regarding installing Honeywell 927 thermostats but wanted to clarify my setup to see if clear advise could be provided. Currently I have an analogue Honeywell connected into a Vaillant ecomax boiler via bins...
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