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  1. T

    Fitting a nest 3rd gen to a modena combi boiler

    No the Honeywell was how it was wired to begin with I know it needs removing and won't work with 2 connected
  2. T

    Fitting a nest 3rd gen to a modena combi boiler

    Hi Just got a nest to replace my Honeywell 927 Any advice on wiring it up Seen different confirguations So not sure what to do Have wired it up as instructions Nest communicates with heat link but no power going to boiler Attached is my existing wiring Thanks
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