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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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    Cold water to a kitchen tap MUST originate from the cold water main for health reasons. It should be mains pressure and not from a tank. It is drinking water.

    I belive that taking drinking water from a storage cistern (tank) is permitted if the cistern is protected from contamination - what used to be bylaw 30 - I think suitable parts (lid for the tank and insect screens for necessary above-water holes etc.) are still often sold as "bylaw 30 kits" even though the water regs number changed years ago.

       - Andy.
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    Cold water to a kitchen tap MUST originate from the cold water main for health reasons. It should be mains pressure and not from a tank. It is drinking water.

    I belive that taking drinking water from a storage cistern (tank) is permitted if the cistern is protected from contamination - what used to be bylaw 30 - I think suitable parts (lid for the tank and insect screens for necessary above-water holes etc.) are still often sold as "bylaw 30 kits" even though the water regs number changed years ago.

       - Andy.
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