ufh

  1. A

    Underfloor heating controls - a conundrum

    Almost a year ago I was trying to resolve a few issues with our underfloor - see orignal thread in plumbing here: https://www.diynot.com/diy/threads/underfloor-heating-a-couple-of-issues.493454/ The meachancal side is fairly under control (!) now nut the control side - electrically, is still...
  2. R

    Tips for laying 20mm UFH pipes?

    Hi Anyone got any tips for laying our 20mm PE-RT underfloor heating pipes into aluminium spreader plates (200 mm centres)? Specifically I'm after advice on how to get the pipe to be more flexible. The pipe is really stiff and very difficult to get it to fit around the bends. I'm going to try...
  3. R

    Devimat confusion

    Hi, I've just moved into a flat with Devimat heating and am confused about the settings / display. 1. Should the mat switch off as soon as it reaches the end of the "on" time? This morning, I noticed that the Devireg 550 controller in one of the rooms was showing the heating-up symbol about 40...
  4. BoudinC

    Devireg 550 thermostat

    Hi, recently purchased a bungalow with UFH controlled by devireg 550s in every room. They are all wired and the displays on, but no matter what i set the timers and temperatures to the heating is not kicking in when expected and appears to kick in randomly. Downloaded several manuals and i...
  5. O

    Old suspended Fl; insulation, breather membrane, plywood between joists

    Sorry, this is a nested question.. Old suspended 1960s floor comprises: 3" void, 3" timber heights (sat on engineering bricks, levelled with cement), floorboards. Joist spacing sees 440mm approx inbetween joists. Joists are 2.5" wide. Goals: - insulate between timbers - UFH: install over tray...
  6. C

    UFH - Which pipe? (Screed between Joists)

    Hello UFH people. I am about to install a wet underfloor heating system 25mm 8:1 screed over celotex between joists @ 400 centers. Seems to be the best fit for our project. I need to get the pipe work in soon so that the floor can go down. And then I’ll do a bit more research on manifolds/...
  7. K

    Electric UFH - Costs to install?

    Ok. So I know that cost is a very subjective thing but I'm in the midst of a renovation - my first real project - and we're planning to tile most of our ground floor so to take the cold edge of the tiles, we're planning on installing electric underfloor heating. We've had a quote for around...
  8. A

    Adding UFH using zone 2 - Ideal Vogue with hive

    Ok I am a beginner so may not get the terminology right so apologies in advance(part of the battle with DIY is know what questions to ask(the other part is know who to ask)) but from reading other posts I think I am in the right place. So hope you can help me as the Title suggest I have and...
  9. J

    Unvented T&P relief valve on buffer store

    Hi, I'm planning to install a thermal buffer store (to prevent my combi cycling) as part of my UFH on a building control ticket. I'm a professional engineer, and feel competent to install it safely. However, I am unclear about part of the G3 requirements (so competency not quite there, but...
  10. J

    Have you used mineral wool as a floating floor resilient layer?

    Hi, I'm a new member here, but have been floating in the background for quite a while now. I'm putting acoustic insulation and UFH into the floor of my first floor flat. I'm planning an approach inspired by an (acoustic) detail mentioned in building regulations document E, 3.102, which...
  11. N

    Wetroom and underfloor heating

    Hello every one, I’m going to be making our en-suite in to a wetroom and want to use wet underfloor heating. Do I tank the room then put the under floor heating on top of that or the other way round? If any one has any recommendations on tanking products or wet underfloor heat please let me...
  12. ZmicerMars

    Total modifications of bathroom in the basement.

    Нi Friends I am Zmicer I will show you a new project. I hope it will be useful to everyone who builds a house. Equipment did not work the proper way. There were installation mistakes from the very beginning, and Underfloor pipes of heating system were leaking. We decided to replace radiator to...
  13. G

    Water underfloor heating advice

    Looking for advice on UFH as well as general heating system. We have made the choice to get water underfloor heating in the middle of our refurb works for the kitchen. Rather than placing PVC pipes in plastic castellated floor panels, we will have them routed between joists and on top of...
  14. A

    Underfloor Heating - A couple of issues

    Hello, I am hoping for some assistance troubleshooting my UFH system. Background: House is about 10yrs old, we are the second owners. Boiler is a large combination boiler, housed in the garage. Heating is UFH throughout property, on both floors. There are two manifolds, one on ground...
  15. H

    Nest with Polypipe UFH

    Hi can someone help! Our boiler man has brought in an electrician and both seem to be lost. Is it possible to have a nest setup to work our UFH setup.Any help would be greatly appreciated. Our Combi boiler is a Glowworm Ultimate2 35c. We now have 2 two port valves installed after the boiler...
  16. R

    Boiler/ufh issue, please help

    I’ve had many engineers with no luck, please help! I am running a glow worm 30 HXI boiler, approx 3 years old. It is a three zone system - one zone is the underfloor heating consisting of 5 loops (approx. 35sqm room), another zone is the rads consisting of 7 rads (6 have TRV's) and the final...
  17. R

    Turning on UFH: gradually increase room or water temperature?

    It is starting to turn cold and I will have to soon have to turn on the UFH. I know that I should do this gradually over a few days, increasing the temperature by 1 (?) degree each day. Is it the room thermostat that I should adjust every day, or the manifold's temperature that I should adjust...
  18. compact

    Electric underfloor heating, forgot the floor sensor

    We have had Cozytoes heating matt laid and tiling done. They have come to install the Touchscreen Timerstat and they have realised they forgot the Probe/sensor that lays under the tiles amongst the matt. I know, cowboys, plonkers, not paying for it etc etc. However is it possible to fix this...
  19. S

    Underfloor heating with system boiler design

    Hi to all plumbers out there. Looking to confirm my understanding of my underfloor heating design as I'm getting conflicting info from my plumber, my electrician, and my underfloor heating tech support :( I have a system boiler with an unvented cylinder "behind" a 2 port valve, a 4 zone...
  20. N

    OpenTherm with Multiple nests on underfloor heating

    I'm in the process of upgrading the controls of my heating system. (Unvented S plan with 2 heating zones) So far I have swapped the old fashioned room stat for a nest/heat link to control the zone valve for the upstairs zone which is a trad radiator system. That all works BRILLIANTLY! So the...
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