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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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  • Former Community Member
    0 Former Community Member
    I think I’ve worked it out now thanks to google, i only need the Com/Live and call for heat wire on the Flomasta thermostat.  Thanks for your help guys.
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  • Former Community Member
    0 Former Community Member
    I think I’ve worked it out now thanks to google, i only need the Com/Live and call for heat wire on the Flomasta thermostat.  Thanks for your help guys.
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