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underfloor

  1. U

    underfloor heating. one section not heating.

    Problem with activator in just one area of the UFH system. I don't know how to take off the activator to check the pin. No problem with water flow. Not sure how to handle the flex coming out of the activator. I know the pins aren't working as the water gauges are not responding (that's what...
  2. A

    Underfloor heating - manifold valve leak

    My underfloor heating has sprung a leak where one of the pipes reaches the manifold. I have tried giving it a bit of a clean and tightening it, but to no avail. Every time I re-pressurise the system is goes again. Is it as simple as shutting off the water supply to the heating and replacing the...
  3. M

    looking for a Wunda underfloor heating plumber - London

    I'm looking for someone that has experience with the Wunda underfloor heating system. I'm based in Mortlake SW London
  4. Christopher buzzard

    Uponor underfloor heating valve.

    Can some please identify the valve on this underfloor manifold ( with the black wire coming out of the top). Have an issue where the system is turning off every 10-20 minutes and staying off for a while then coming back on again. The room can’t get up to temperature because of this. Power was...
  5. jontyking

    Polypipe underfloor heating not working

    Complete amateur here. I had a Polypipe underfloor heating system put into a new extension 3yrs ago but the plumber who fit it is now no longer available - he's just had a career change, he didn't go out of business. It's just a single zone system connected to my main central heating system but...
  6. kenjiru

    Underfloor heating not working correctly

    I've bought an old house and converted it from radiator heating to underfloor heating. I've reused the old gas boiler Vaillant ecoCOMPACT VSC 206/4-5 90 that had an multiMATIC 700 module already installed. Heating work fine for the first floor, but it does not work correctly for the upper...
  7. PolypipeOverlay

    Pipes going in at angle into Underfloor Heating Manifold Problem?

    Is it acceptable to have plastic pipe going into the manifold at such angles as shown in photo? There is definitely stress on the fittings as the pipe is pulling hard to one side on numerous connections. The manifold does not leak under pressure test. Should it be kept as is if it does not leak...
  8. M

    Underfloor heating, no gas and big boiler - what is this?

    Hello everybody, I’ll need your help! I’ve no experience on this matter... I’m about to buy a flat that has underfloor heating. The flat has no gas and the only source of heating, as far as the agent knows, is what looks like to be a big boiler in the picture. There is a thermostat on the wall...
  9. C

    Air Source and underfloor heating in old bungalow

    Hello. I’m looking for some advice. We had a 1960’s bungalow in Cornwall with a wooden suspended floor. The old oil builder is 20 years old and so we want to replace it. We were looking at a Air Source Heat Pump with underfloor heating but the more we look at it the more concerned we are that it...
  10. F

    Can my boiler handle underfloor heating?

    Hi all, Needing some advice on underfloor heating please. I have an approximately 4 year old Vaillant ecoTec Plus 838 combi boiler which is currently serving 11 radiators around the house which includes 2 towel rails. I've heard that if you want underfloor heating you need to ensure the boiler...
  11. R

    Underfloor heating/boiler sizing

    Im refurbing my house and looking into underfloor heating downstairs. What size boiler would be needed for 30m2 underfloor heating 1 bathroom 7 radiators (5 if ufh installed)
  12. N

    Polypipe Underfloor Heating with 3x 2-Port Zone Valves???

    I am currently trying to find out which is the best way to wire up my underfloor heating. I have attached a PDF of what my system is currently like. I've been advised to install 3x 2-port zone valves so that when the UFH calls for heat it can do so independently of the radiators, which is...
    • Nis
    • Thread
    • heating underfloor underfloor heating valves
    • Replies: 4
    • Forum: UK Plumbers Forums
  13. D

    Wet Underfloor Heating not working

    Hi , I have a polypipe underfloor wet system , manifold and with a Salus wireless thermostat. Was working fine last winter for the first time - brought up the temperature slowly over several days using the manifold temperature valve as instructed and left it on 45 degree setting and then...
  14. moonlight

    New Vaillant boiler fitted, problems with underfloor heating.

    I fitted a vaillant eco tecplus 630 in July. Underfloor heating now required. It will only come on when the towel rails are calling for heat and zone valve open. I know this is a wiring problem. I didn't wire the boiler a colleague did. Live, neutral earth ok. But I can see only one of the wires...
  15. M

    Underfloor heat thermostat

    Hi. What type of thermostat can I use for my underfloor radiant heating? I currently have the type shown in the picture and i do not dind it very accurate. Can i get a digital one?
  16. M

    Most reliable underfloor waste connectors?

    I am in the process of building a shower in a loft room. The Shower Waste water pipes have to pass beneath the shower tray and will be totally inaccessible once the shower is complete. Which connectors are likely to be the most reliable long term, compression or push fit? I have had solvent...
  17. S

    Underfloor heating pump and manifold choice

    Having a load of work done at the moment, part of which is to have wet UFH installed, just looking for any thoughts around the best system to use. There seems to be lots of choice, looking for 3/4 zone system. Any thoughts greatly appreciated.
  18. M

    Location of secondary return pump and return pipe for underfloor heating.

    I am fitting a secondary return on a system, tank will be in the loft. All the pipework goes up to the loft at the back of a cupboard, I would like the pump to go on the return pipe in here so it is easily accessable for maintenance. My collegue says he thinks it should go to as near to the tank...
  19. N

    Underfloor heating question - Heatmiser

    Hi all I have underfloor heating downstairs and radiators, plus two towel radiators upstairs. I have a Heatmiser UH8 and the radiators are connected to the the 5th zone and the towel radiators are connected to the 8th . Now, if I remember rightly from manuals, if you want to hook up a towel...
  20. C

    Underfloor temperature limiting valve

    Hi Guys Does anybody have any experience in working with one of these: RTL valve Underfloor heating return temperature limiter thermostat UBG insert 5902693830900 | eBay or RTL-MB3 Return Limiter for underfloor heating Valve Temperature Cassette Box | eBay its basically a TRV that...

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