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underfloor

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  1. R

    Wet underfloor heating help Please!!!!!!!!!!!!!

    Hi All, I have a water underfloor system that doesn't appear to be working and I am after any advice anyone is able to offer.... I can't seem to find any information about the system, it was in there when we bought the property. What temp should the stat be set on - was at 3 but goes up to...
  2. S

    Wet underfloor heating possible leak problem

    Hi all. ive trawled the net and this forum looking for a possible diagnosis to my problem and now hoping you can help. i have a wet ufh system install a year ago. I've used a polypipe mounted in 20mm polystyrene panels by wunda floor. Under the panels is a latex screed over a concrete floor...
  3. S

    Underfloor Heating Unexplained Temperature Drop

    Hello all, Underfloor setup is as follows: Dedicated 22mm flow from 2 port valve Dedicated 22mm Return which tees in to 28mm by cylinder. 11 Port Manifold Grundfos 25-60 Alpha 2 pump on manifold. Heatmiser setup but nothing is wired in as yet. The problem is that when the pump is off, the...
  4. the_d_o_t

    underfloor heating advice

    hello people first time i have been asked to price for a underfloor heating system so just after bit of advice. area is 40m2. how many m2 should you have to a zone? thanks Dot
  5. M

    Can anyone identify which make this underfloor heating set up is?

    Not done much underfloor before. Client emailed me saying the solenoids not working but he doesn't know who the manufacturer is. If anyone recognises it let me know so I can contact the manufacturer to see how to repair. Cheers chaps
  6. J

    Underfloor Heating

    Hi everyone, I'm a sparky so my plumbing knowledge is limited. I was asked to go out to a new underfloor heating system last week as the last 2 sparkys apparently couldnt get it working. Its a baxi combi boiler with rads upstairs and underfloor downstairs. the rads are controlled via a...
  7. Chalked

    Pump for underfloor manifold

    Hi sll have 4 new build houses in York that have flooded. They need me to get the heating working asap. i have fitted on the ground floor underfloor heating it's a Grunfoss ups 25-40/60. Is it a special or would any Grunfoss pump fit and work. all were under 3ft of water. I could order...
  8. J

    Why is finding a new Thermo for my underfloor heating so hard?

    We have a sizeable house with full Polypipe? underfloor heating. We have 16 thermostats (Belux WFHT-20221UK) The main control panel (timer/on/off etc) is a Horstmann ChanelPlus 37xl UFH was fitted when the house was built in 2004 (ish) We have two problems 1) The spindles in the Belux...
  9. U

    Underfloor heating 1 room not warming up

    Hi, I'm hoping somebody could offer some advice. we have an underfloor heating system in 2 rooms (seperate zones, thermostat in each) it works fine in the first room but in the second room it doesn't get warm. what is confusing is the return feed for this room is hot so water is running...
  10. M

    underfloor heating not working upstairs

    Underfloor heating not working upstairs, it's fine downstairs. -pressure gauges stay at 40 -pump working -tried restarting by pressing button on limit thermostat, but it still doesn't work any ideas to what the problem is?
    • maria_oichen
    • Thread
    • heating underfloor underfloor heating
    • Replies: 26
    • Forum: Air Sourced Heat Pumps
  11. A

    Underfloor heating pump problem

    I have two underfloor heating sets, photo attached. Both pumps are turning fine. I opened the screw and can see them turn. The set on the right works fine. The set on the left does not work. The pipe coming out the bottom of the wilo pump does not heat up. Please help. Thanks.
  12. S

    Underfloor heating kit with Vaillant 637?

    I've just started the build of a rear house extension and would like there to be under floor heating connected to the existing Vaillant 637 system boiler with 470F weather compensator. The floor will have 100mm PIR insulation and will have 65-75mm of screed on top so I'm looking to attach/clip...
  13. M

    Wet underfloor heating system

    My underfloor heating is set at 21 on the stat but the floor area feels cold to touch. I was expecting to feel a little warmth from it. I have since discovered that my builder has laid a 30sqm pack over a 50sqm area. Is this as bad as it sounds? Thanks in advance
  14. F

    Need Heating Engineer experienced in Wirsbo/Uphonor Underfloor Heating SG12 area

    I am looking for a heating engineer who is experienced in Wirsbo (now Uphonor) underfloor heating systems. This was self installed over 15 years ago when I rebuilt the bungalow but the manifolds desperately need a service as the valves are sticking and not opening. I have been given a contact by...
  15. W

    qual pex 20mm barrier pipe for underfloor heating does anyone want to buy any ?

    contact me by pm thanks
  16. G

    Upinor underfloor heating

    Hi upinor underfloor heating keeps locking out. By this I mean if you switch off electrical supply for approx 30 secs then switch back on it works again. Has anybody experienced this ?? thanks gareth
  17. T

    Underfloor heating manifolod position

    A builder has asked me to put the ufh manifold in the basement which will then feed the ground floor (the pipes will all be above the manifold) I think that any manifold MUST go above pipe loops for air bubble/airlock prevention what say you guys????
  18. A

    Single Room Underfloor Heating

    Hi All, I have installed UFH in my kitchen extension. Problem is to get it started. I can feel that hot water is going trough pump, but no heat water is coming back. So I thought either it's connected wrong or I have a air in the system. Please see file attached with pipework explained. So this...
  19. O

    Temperature underfloor heating

    hello all engineers, how ow to set up the underfloor heating appropriate? shall I just set it up on the manifold itself like on the thermostat which looks similar to the thermostat on rads as well as on those knobs which are indicating how much water is going through the underfloor heating ...
  20. S

    Underfloor heating - Viessmann kit

    Considering underfloor heating in two rooms, having seen that Viessmann produce a piece of kit to compliment the 200 series boiler and mix the water for the underfloor heating. The question I had is this worth it? Seems quite expensive as additional pieces of kit go (nearly the cost of the...
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