belling DB90 thermostats

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  • #36495
    steveDAS
    Participant

    the old hob stats are blue the number on them don’t match with numbers on new one can any one help
    old stat info invensys
    4,n = blue leads
    2a = mauve lead or brown lead
    s2 pilot or 0,5a = red lead, white lead
    p1,L red

    new stat info EGO
    p1
    2
    p2
    4
    4a
    s2
    s1
    😕

    #251201
    DentedPorsche
    Participant

    Re: belling DB90 thermostats

    Go into “Diamond H Wiring Reference” sticky and download the pdf. It contains all the info I had to hand on various regulators. May well be of some assistance to you.

    To try and help further we would need the model numbers of the switches.

    brian

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