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underfloor

  1. 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)
  2. 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
  3. 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...
  4. 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...
  5. 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?
  6. 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...
  7. 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.
  8. 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...
  9. 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...
  10. 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...
  11. A

    New Member: Underfloor Heating

    Hi, Thanks for having me. I own a B&B in the far NW of Scotland in the village of Durness on the NC500 route. I have an Encompass underfloor heating system connected to a Grant oil burner and associated with a Santon Premier Plus unvented hot water system. I keep losing pressure in the hot...
  12. O

    Extending underfloor waste pipe

    Hi I currently have a downstairs toilet that drops into a waste pipe that exits through the wall and into an inspection chamber. I need to extend the underfloor waste pipe to the next room for a new kitchen. As I am digging up the floor and re-doing the bathroom is like to confirm the best...
  13. M

    Underfloor heating zone getting warm with system turned off?

    Hi Guys hope you can help, I have a wet underfloor heating system and have 6 zones, the problem I'm having is one of the zones is getting warm even though the master thermostat/controller is turned off, the pump is not being switched on so is not circulating through the system. I have an 'Ideal...
  14. D

    run pipes for underfloor heating?

    Hi I have an installation for CH half way installed (first fixed) I want to tile all the floors.. and have realised it will be too cold so I thought about laying pipes in the floors instead of having radiators and simply using the flows and returns that are already there for the radiators to...
    • Deleted member 102951
    • Thread
    • heating pipes underfloor underfloor heating
    • Replies: 19
    • Forum: UK Plumbers Forums
  15. J

    Underfloor gas piping to fireplace

    Hi all Sorry for long post. I live in a house that's about 25 years old. There is an old gas fireplace that I having professionally removed (don't worry I'm not touching anything gas related!). It's the type of fire that stands on 4 legs and neatly sits inside the fireplace area. At the back...
  16. M

    Polypipe underfloor heating

    Hi I have a polypipe multizone underfloor heating system (Gas) that stopped working a few weeks ago. It had been making some screeching noises and my hunch in that the Grundfos pump has died as the screeching has stopped - along with the heating! I may be wrong of course. The LED's on the side...
  17. C

    Wet underfloor heating

    Hey guys Ive carried out some rough calculations as to how much of my concrete floor I'll have to break out to fit a UFH system and I'm concerned about the amount of work involved and the number of skips I'll need and was wondering if I can reduce the amount of digging I need to do. I was...
  18. R

    Underfloor heating + Viessmann 222F

    hi all, Just purchased a property and looking at boilers etc. We’re going to have all of downstairs with underfloor heating (approx: 100 sq meters.) running backup rad pipes also downstairs (just in case!) 4 beds, will have an en-suite bedroom in the loft and also mid level bathroom. Rads in...
  19. M

    Fixed “2 litre per minute underfloor leak”. Thank for advice.

    a few months ago I made an enquiry re a leak in hot water system under the floor preventing central heating working. thanks for help in my last post. The solution was to divert around the leak and install new pipes. The pipes were well hidden and several visits were needed to track the pipe...
  20. S

    Underfloor Thermostat Question

    Hi Guys Hoping someone could take a quick look at the attached photos and advise if this is an OK setup. I've moved into a house that was built 20 years ago and has wet underfloor installed. I had a few issues at first with some of the zones getting too hot. The actuator heads on some of the...

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