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  1. A

    UFH - Is this Installed Correctly?

    Hi - please help me. I think our UFH is installed incorrectly. Please see pictures (if anyone needs more images I can take them). UFH-Full-View-Labelled - https://ibb.co/3C0MsKD The problems we have are. The heating takes FOREVER to heat the rooms. The circulation pump is running all the...
  2. M

    ufh heating on 20+ hours a day

    As above. Ideally it'd be less. This might be the wrong forum for the Q. But the system is actually working fine. the system is in the 15mm insulation boards above a tar subfloor. Are my next steps to start getting cavity wall insulation etc etc?
  3. B

    2 Zone Wet UFH System room temp low.

    Hi, I am using mu UFH for the first time and it doesn’t seems to get the whole floor warm enough let alone the room. (Intalled May 2022). First use this week. It is installed as per manufacturer’s details but seems to have to much temperature drop across the loop approx 25degc. Flow rate...
  4. D

    UFH zones come on at random - strange or normal?

    Hi. This UFH system is in my mil's bungalow purchased earlier this year. It has 9 zones, is run from a WB 37CDi combi, and uses Wavin actuators with a wall stat in each zoned room. It all appears to work just as it should. A few weeks back, tho', one of the two bedrooms warmed up excessively...
    • DevsAd
    • Thread
    • forum normal plumbing random strange ufh zone zones
    • Replies: 7
    • Forum: Plumbing Zone
  5. L

    Does anyone know the make of this UFH?

    Hello All/ Apologies if this is posted in the wrong area. We have electric underfloor heating in our bathroom and the controls are not straightforward and we have not been given a manual. I can't find the make/model listed on it to look the manual up online. Does anyone recognise what make it...
  6. bob the fiddler

    S-Plan redesign for ufh, buffer tank, dhw, heat pump /with solar

    I have looked at the S-PLAN wiring diagram (standard) for my new UFH/DHW system, but I don't think it offers me the best use of the new heat pumps resources, given i want to run the heat pump at low temp for a long time during sunlight hours only. Instead I came up with different control plan...
  7. D

    UFH normal water temp- aquarea

    Hi there. I am firing up the heating for the winter, zone by zone to test all is working and temp seems to be low. It’s an aquarea air to water system. It has heated our hot water no probs but it seems that the UFH aspect is running low ((or maybe it isn’t and I’m just not up to speed on...
    • Deleted member 113144
    • Thread
    • panasonic temp ufh water
    • Replies: 1
    • Forum: The Welcome Wagon :)
  8. N

    UFH blending valve reduces flow

    Hi guys, I'm having trouble with a newly installed UFH system. There are 2 manifolds, one with 5 loops, the other with 9. Both are made by Herz, model no 1732007. Pump is a Wilo Yonic Para something something. Boiler is Vaillant Elo Block 14. My trouble is that setting the TMV to its minimum...
  9. A

    Thermostatic Mixer Valve

    Any idea where I can get a mixing valve the same as the one in the image, mine has a very slight leak.
  10. D

    Gas boiler feeds UFH only - is a Mixer needed?

    I've searched the forums for an hour - not found anything specific on this question. Question 1- can we remove the UFH Mixer - and just set the Boiler Flow to 45deg? Background (and see diagram) I'm Helping our village hall, 14 year old UFH heating - the gas boiler just packed up -...
  11. A

    Vaillant Ecotec Plus Combi & UFH Control - V Smart Possible?

    Hi All Looking at having controls replaced / upgraded for a Vaillant Ecotect plus combi boiler. Currently have x2 zone valves on the heating (x1 for rads via a Honeywell wireless stat, and x1 for UFH circuits via Heatmiser stats - both wired to a Heatmiser wiring centre) I'm interested in...
  12. D

    Extending water UFH to attic

    Hi, I have 5 bed house with underfloor heating on all 3 floors.I also have converted attic. UFH was installed in year 2000. I want to put low temp rads in attic (it currently has no heating!) and feed water from UFH on floor below. Question 1: Is this a sensible approach? Question 2: Is this...
  13. Simarwood

    Rads heating (a bit) with UFH

    Hi, we have a completely new install from scratch/building site. When UFH zone comes on, some of the rads also come on a bit. The same also happens when the hot water comes on. They are operated separately though Is this normal, or is something wrong (and is it a big deal?). I worry I am...
  14. C

    Ufh to y plan with upgrade to s plan

    It looks like I have 2 options. The first uses the existing pump, the second uses another pump to pump water exclusively to the ufh manifold and pump. I have already taken off a separate flow and return from the top of the boiler. I would like to know which would work best. Any advice welcome...
  15. D

    20 year old UFH - Upgrade?

    Hi, I have domestic water based UFH - 20 years old. House is 100 years old with 5 beds. UFH everywhere. Works okay but perhaps could be better. Top of house is coldest. I have newish worcester boiler(Greenstar 8000 life). System is on 4 different storeys, 5 manifolds and perhaps 18 loops...
  16. M

    Finding a small leak on UFH

    Hi all. Got a leak on an underfloor heating system 2hich is dropping 2 bar of pressure in 2 1/2 weeks. Would one of those infrared flir phone attachment cameras work at all? Thanks all
  17. D

    UFH Heating Control Dilemma

    Hi, I am appealing for some advice and direction on replacing the heating control system in my house. Ill try to describe as best I can. Looking for a bit of info as not having much luck with trades. Oil Boiler operated by a Honeywell Smartfit Programmer. Not sure if its Y or S but controls...
  18. M

    UFH with hive MultiZone on Y plan

    So I have a combi boiler with a hive hooked up to it and from what I can tell its a Y plan(I think) with 1 zone. So I crank up the heat on the hive it makes a call for heat and boom the boiler fires up. Downstairs I want to install an UFH wet system which doesn't look like too big a deal...
    • mgrover
    • Thread
    • forum hive multizone plumbing ufh y plan zone
    • Replies: 13
    • Forum: Plumbing Zone
  19. A

    UFH (wet+concrete) installation efficiency

    I am building an extension and planned to have UFH on its ground floor. My builder imbeded 15mm pipes under 10cm concrete which was meant to be the total thickness of the floor. Unfortunately as they knocked through to my existing house, it turned out that the new floor is 8cm lower than the old...
  20. AlexGold

    Looking for info about UFH with ASHP

    Hi all, Looking for some advice. Recently moved into a new house and we've been doing bit and pieces to it, we're now at the point where we're looking at the heating system. There is currently a multi-fuel burner which provides hot water and heat for the radiators, there is also an immersion...
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