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Wiring up new room thermostat

Former Community Member
Former Community Member
Hi guys


Hope you’re all keeping well and safe?


I need some help with wire colour identification for my new Flomasta and 6259G wired thermostat.  I have worked on any heating/water installs yet, so I’m not familiar with the wiring colours.  My old analogue Honeywell thermostat has 5 wires, Gn/Y, blue, black, light grey and brown.  The Honeywell is wired 1 gn/y, 2 blue, 3 black, 5 brown, light grey isn’t used.  New flomasta uses only 3 wires, Com, NO & NC, I know the NO & NC means open/closed, but which colour wire goes to which terminal?
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    It does however have everything to do with regulations - and as this is the wiring  and regs branch of the forum you should not get kicked out of the bar just yet.

    I have a tale of an electric tea urn in the 6th form common room that started running slow, and when the keener of us decide on emptying properly for the first time in ages, as opposed to just constantly refilling it,  the small bones of a mouse or similar were found to be part blocking the exit.

    Presumably all the fur and muscles etc that were not there had been drunk in many cups of tea/coffee before that.

    Not sure if a modern PAT regime would find that.

    M.
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  • 0
    It does however have everything to do with regulations - and as this is the wiring  and regs branch of the forum you should not get kicked out of the bar just yet.

    I have a tale of an electric tea urn in the 6th form common room that started running slow, and when the keener of us decide on emptying properly for the first time in ages, as opposed to just constantly refilling it,  the small bones of a mouse or similar were found to be part blocking the exit.

    Presumably all the fur and muscles etc that were not there had been drunk in many cups of tea/coffee before that.

    Not sure if a modern PAT regime would find that.

    M.
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