1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Wet UFH recommendations

Discussion in 'Plumbing and Central Heating' started by Nolobes, 6 Sep 2021.

  1. Nolobes

    Nolobes

    Joined:
    28 Apr 2021
    Messages:
    8
    Thanks Received:
    0
    Country:
    United Kingdom
    Hi,

    I am planning to install a wet system in the next week or 2, prior to screed arrival for my new kitchen floor.

    Having done quite a bit of googling, I can't seem to find many impartial places of advice as to what's a half decent and not too pricey ufh system for approx 28m2 in a single room (which the boiler is also in).

    Can anyone recommend any decent products?

    TIA,

    Ben.
     
  2. Sponsored Links
  3. muggles

    muggles

    Joined:
    28 Oct 2005
    Messages:
    13,342
    Thanks Received:
    3,077
    Location:
    Daventry
    Country:
    United Kingdom
  4. Nolobes

    Nolobes

    Joined:
    28 Apr 2021
    Messages:
    8
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks for this @muggles. Am I right in thinking that with this system I'd have to have the UFH on at the same time as the house rads? My preference would be for a system which enables me to operate the UFH separately from the house heating. Would this simply be a 2-zone system?
     
  5. muggles

    muggles

    Joined:
    28 Oct 2005
    Messages:
    13,342
    Thanks Received:
    3,077
    Location:
    Daventry
    Country:
    United Kingdom
    No, this will allow completely independent control on its own zone (provided it's installed correctly of course!).
     
  6. Mr Chibs

    Mr Chibs

    Joined:
    28 Jul 2015
    Messages:
    1,077
    Thanks Received:
    181
    Country:
    United Kingdom
    I’ve got a polypipe zru kit, for a single room up to 30 m².
    I used the red floor trays, for the pipe work embedded in liquid screed around 65/70mm.

    With two, two port valves, I have control of the ufh separate from the house (combi and 10 rads) and have a pair of wireless thermostatS.

    Works really well, wish I had wet ufh throughout hole house.
     
  7. SpecialK

    SpecialK

    Joined:
    27 Sep 2010
    Messages:
    731
    Thanks Received:
    99
    Country:
    United Kingdom
    I have just installed a polypipe system with the red push in insulation clips.
    All installed fairly easily. It didn't come with a pressure gauge (bought one from toolstation) and I had to buy some pipe cutters.

    Installation was very easy. It came with a grundfos pump too..

    Just need to get it plumbed in before winter! You will probably need some 2 port valves so you can have the UFH on without the radiators.
     
  8. Sponsored Links
  9. Mr Chibs

    Mr Chibs

    Joined:
    28 Jul 2015
    Messages:
    1,077
    Thanks Received:
    181
    Country:
    United Kingdom
    Good point about gauge... I did the same.
     
    • Like Like x 1
  10. SpecialK

    SpecialK

    Joined:
    27 Sep 2010
    Messages:
    731
    Thanks Received:
    99
    Country:
    United Kingdom
    Where did you locate the 2 port valves? Both by the boiler? What size feed did you use? I'm thinking 22mm back to the boiler but I have been told 15mm would probably be OK....
    Did you use a wiring centre? I need to do some head scratching and get it wired and plumbed in!
     
  11. Mr Chibs

    Mr Chibs

    Joined:
    28 Jul 2015
    Messages:
    1,077
    Thanks Received:
    181
    Country:
    United Kingdom
    22mm feed, and tee’d off in 15mm.
    Think larger feeds are recommended on most boilers.

    The two port valves were on the flow pipes if I remember correctly. Yes beneath the boiler.

    There was no need of wiring centre, the thermo’s are wired into boiler.
    There is a pump and blending valve on the zru, my ufh has two loops.
     
    • Like Like x 1
  12. SpecialK

    SpecialK

    Joined:
    27 Sep 2010
    Messages:
    731
    Thanks Received:
    99
    Country:
    United Kingdom
    I would break in to the 22mm heating loop. How long is your 15mm feed to the UFH?
    Mine would be about 15m I think. Might just have to do it all in 22mm

     
  13. Mr Chibs

    Mr Chibs

    Joined:
    28 Jul 2015
    Messages:
    1,077
    Thanks Received:
    181
    Country:
    United Kingdom
    My feeds are 22mm right up to the start of the ufh. In the house, when the feeds stop there is a around 3m to the rad on a couple of the rads.

    Just take the 22 as close as you can. That said the ufh system is only 15/16mm pipe work, so doubt it makes that much difference.
     
Loading...

Share This Page