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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?
  • Former Community Member
    0 Former Community Member
    We’re in a 3 bed house now, with 2 bathrooms, no water tank in loft either, pressure in kitchen is pretty weak to be honest and if the downstairs toilet has been flushed or the washing machine is running, then pressure drops a bit more.   Shower is controlled by a mixer tap with no pump, just on the boiler pressure alone, so flow rate and temp changes if toilet is flushed.  All I can think of then is that our mains pressure is crap.


    Zoomup, the system is serviced yearly by our landlord without fail and no expense spared if any part needs replacing either.
  • 0
    Sorry for all the questions Fitzy, but i am still a bit concerned about your shower mixers. Can you post a photo of one please. It does sound like your mains pressure is low, which makes me wonder why bother installing an un-vented cylinder which relies on good mains pressure to feed all the hot water outlets, even though there is a pressure limiting valve fitted.
  • Former Community Member
    0 Former Community Member
    It’s a built in shower with a hot/cold mixing tap in the middle, we had the same problem in our first rented property 19 years ago with a combi boiler, if some one flushed the toilet, the shower temp would rise as the cold water was refilling the cistern, but not to point where it’s scalding hot.  It’s the same sort of mixing you would get if you had used one of the old fashioned hoses on each tap, you just adjust the lever to cold or hot, dependant on what you like, me personally, I like really hot showers, I usually look like a lobster afterwards, but it’s really refreshing, especially on my back to ease any pain (getting old now ?).  I’ve just found a YouTube video on how to increase my boilers pressure, so I’ll give that a go tomorrow.   Thanks for you concerns though.  


    My brother used to have the same problem too, when the toilet was flushed whilst in the shower.  ???
  • 0
    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.
  • 0
    Zoomup:
     but cold water is not direct from the mains in kitchen either.


    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.




    Ah yes, the bird! Let me explain.


    First of all, I agree with Zoomup, Mother taught us to drink only from the kitchen tap. (In fact, I think that all cold taps in Pearson mansions are mains-driven.)


    Back to the bird ...


    I was staying with an old chum (who is now my step son-in-law, lucky bar steward) and the bathroom smelt a bit iffy. He said that he had scrubbed and scrubbed the shower curtain, but to no avail. Now then, it was one of those over-the-bath showers from a tap at the end of the bath. On completion of my shower, I turned the lever to taps before turning off the supply. Out popped a feather! ?


    Further investigation revealed a dead bird (minus at least one feather) in the water tank.


    Said old chum had been brushing his teeth from the bathroom tap!!! ?


    ETA: for Lisa, God knows what this has to do with leccy! ?


  • 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.
  • 0
    mapj1:

    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.


    Rodentia tea anyone?

    Rodentia Tea (greywoodmanor.com)


    Z.


  • 0
    I fitted a small water heater in a 60's primary school that thad been closed and handed over to the community. It was in part of a classroom used as a kitchen for teaching. I turned off the water at the mains and ran the cold water to drain the system. An hour later it was still running.


    Further investigation showed that all the cold water in the main toilets, drinking fountains and sinks all came from a very big cold water tank on the roof. It was in a small hut and had a partial cover but here was lots of unrecognisable stuff on the floor of the tank. The children and teachers had been drinking from the contaminated tank for years.
  • 0
    It may well have been a dual use design also able to last for a number of days as an emergency shelter in the event of a nuclear attack and or to store enough to put out fires nearby if the mains water was off.

    The cold war led to some seemingly odd design decisions for local authority buildings, like public sports centres and swimming pools that were designed to be able to quickly double up as medical centres or even morgues, and village halls with more fuel and water storage than you would nowadays bother with in today's 'always on' society, and even the odd basement that again nowadays would not be there.

    M.
  • 0
    mapj1:

    It may well have been a dual use design also able to last for a number of days as an emergency shelter in the event of a nuclear attack and or to store enough to put out fires nearby if the mains water was off..

    M.


    While it's a possibility, I do not think that much thought went into it. Some of the installation was over engineered but much of the building is typical 60's, throw it up minimum cost. The tank did not have a proper cover or insulation although it is above the boiler room and the hut on the roof had one slatted wall to allow the air and everything else in. 


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