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Replacing Digistat 3 with Honeywell CM907 ?

Discussion in 'Plumbing and Central Heating' started by creative101, 22 Nov 2010.

  1. creative101

    creative101

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    Location:
    Aberdeen
    Country:
    United Kingdom
    I am about to replace a old Digitiat 3 with a CM907 and needed some advice.

    Currently:
    Digistat 3 connections are:

    1 = RED
    2 = nothing
    3 = BLUE
    (I also have a black and a green/yellow wire coming form the wall which are unused (taped up)).

    Do i connect the CM907 as?

    A = RED
    B = BLUE
    C = nothing

    OR

    A = RED
    B = nothing
    C = BLUE


    Many thanks
     
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  3. mikely

    mikely

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    Location:
    Lancashire
    Country:
    United Kingdom
    You want:

    A = RED
    B = BLUE
    C = nothing

    You should add a red sleeve to the blue wire to show that it is part of the live circuit and not a neutral.
     
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