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  1. J

    UFH zones not heating up

    Hi, I'm a complete novice to UFH so excuse my ignorance! I've just had underfloor heating installed and an area of the ground floor is not heating up. The thermostat is set to 21 but it isn't getting past 20, and that's due to heat from other zones within a large open plan ground floor. The...
    • Jim Norf
    • Thread
    • central heating system forum heating not heating plumbing ufh zone zones
    • Replies: 0
    • Forum: Plumbing Zone
  2. D

    Single Zone UFH addition to main system wiring

    Advice needed please: I have an UFH installation as part of my main CH system. The UFH will never be required in isolation to HW or main CH, therefore keen to wire it completely independently of boiler and main wiring. All I want to achieve is the following: A new Room stat (in the location...
    • DIYTony
    • Thread
    • forum main plumbing single system ufh wiring zone
    • Replies: 0
    • Forum: Plumbing Zone
  3. E

    Anybody drilled through a floor with UFH before?

    Looking to install a kitchen island with integral sink, this will mean installing drainage and plumbing. But will need to dig a hole through UFH, has anybody done this before?
  4. A

    Looking for a specific flow meter for UFH manifold

    Hi. I need to get a replacement flow meter as one has split and is leaking. I can’t seem to find the specific one and can’t see a maker on it. Does anyone know where to get one, what it is or any alternatives? Thanks.
  5. D

    UFH zone always on - what is causing it?

    Hi There Currently using a Panasonic Air to Water UFH heating system in a new build and appear to have some gremlins in the system 1 - I've noticed that the kitchen zone is always hot if any other zone in the building is on. What could be causing this? Additional info - I think it is not...
    • Deleted member 113144
    • Thread
    • air to water always causing forum plumbing ufh ufh help zone
    • Replies: 5
    • Forum: Plumbing Zone
  6. C

    UFH manifold air vent dribbling

    Having recently replaced one of the flowmeters on our UFH manifold, why would water slowly dribble out of the air vent?
    • CygnusX1
    • Thread
    • air air vent america manifold ufh usa vent
    • Replies: 5
    • Forum: USA
  7. D

    UFH BUFFER TANK SELECTION (no rads)

    Good day all, I would like to get some advise and perhaps the solution to the issues with my UFH system. We did install UFH in an entire house and got rid of all radiators. The system is 14 port manifold (only 12 are in use) feeding 7 zones. Total room area is 97 m2, with the biggest zone...
  8. K

    UFH has its own pump that keeps running round the clock!

    Hi, I moved to a house recently where it is installed with city heating system. As I understand from past records, the original house had only radiators that were fed by a thermostat-controlled heat exhanger with a pump to circulate hot water. One of the previous tenants installed under-floor...
  9. G

    Advice on new Smart Central Heating and UFH system

    Hi All, I am getting a new Central heating system installed and looking for advice on the best design. The heating system will consist of the following components: System Boiler. Megaflo. 2 Zone Underfloor heating. 15 Radiators. I have narrowed it to the Heatmiser Neo stat system or...
  10. P

    Help and advice with bypass on ufh with combi boiler & variable pump

    Hi All, hoping for some advice and pointing in the right direction. I have a Worcester Bosch 40he condensing boiler, supplying hot water as priority, central heating radiators using TR2 thermostat in one room. no auto valves on radiators or storage tank. I have built a small extension and...
  11. BuilderDan

    unpressurized open/direct UFH with buffer tank heat source

    The following is a proposed very simple installation of UFH open/direct to an existing 1000 gallon fossil fuel hot water storage tank: We are told that this won't work since the UFH pipework and pump are above the height of the tank, and therefore gravity will empty the UFH... But our...
  12. C

    UFH wiring

    Hi guys can someone explain to me how the wiring of UFH with the use of actuators is wired into an S plan please? its a 3 zone valve set up, Rads upstairs, HW, UFH downstairs. I'm okay with s plan wiring on a simple 2 channel etc but first time doing UFH with actuators and separate room stats. I...
    • Chester
    • Thread
    • america ufh usa wiring
    • Replies: 11
    • Forum: USA
  13. C

    Combi with UFH (no rads)

    Bit of advice needed. Searched but couldn't find anything about Combi's and UFH with no rads. Customer wants to have a combi, UFH but no radiators. Is it a good idea to have a single radiator on the system to provide a heat dump? Or should an auto-bypass suffice? If an auto-bypass then close...
  14. T

    Making Nest thermostat work with Uponor C5 UFH

    Hi everyone, I just installed Google Nest Thermostat 3 Gen, made for Europe together with Uponor C35 underfloor heating system (my version of the Nest comes with a heat link, which is a separate device installed near my underfloor control system. The thermostat talks to Heat Link via wireless or...
  15. M

    Insulating UFH pipes in wall

    Hello, Plumbers have just installed these pipes on brick wall - UFH hot water flow and return. The plasterer is coming on Friday to make the wall good - would welcome some advice on whether an expanding foam or some kind of insulation should be used before the plasterer makes good. Happy to...
    • Mrmikemaynard
    • Thread
    • america pipes ufh usa wall
    • Replies: 9
    • Forum: USA
  16. P

    Fixing toilet to glued-down base over UFH.

    I have to install a toilet on a floor with UFH under it, so will need to stick it down rather than drill it. The toilet I have has those L-shaped brackets for attaching to the floor (like these). Obviously I can't use them as intended, but I'm considering sticking a bit of ply to the floor...
    • PF3267
    • Thread
    • america base fixing toilet ufh usa
    • Replies: 12
    • Forum: USA
  17. D

    UFH why bother when you have photovoltaics

    Hi all with the advent of photo voltaics and heat stores, low temp UFH becomes a why bother. Bags of cheap electric and hot water backed up in the heat store, just use radiators. Now Im aware radiators take up space, but consider what happens when you have to fix a UFH system. With rads at worst...
  18. R

    UFH slight weep from the manifold....simple nip up or a heating engineer?

    Hi all. Got a Polypipe UFH manifold (8 years old) and having turned off the UFH a few weeks ago I decided to turn it back on again as the mornings and evenings are just too cold again. Noticed a slight weep in the flow part of the manifold (see pictures - second one is a close up of the joint)...
    • RJD68
    • Thread
    • america central heating system engineer heating heating engineer ufh usa
    • Replies: 2
    • Forum: USA
  19. J

    Leaking UFH Manifold

    Hi, we have a leak from the underfloor heating manifold. It appears to be leaking from one of the thermal actuators (please see photos). It’s leaking about a cupful every day. So far, I’ve talked to about 10 local plumbers:– Contacted original installer. The admin person kept telling me that...
  20. R

    Will my UFH require its own zone valve?

    Hi, New member here looking for a little advice in regards to a wet UFH system. I am currently in the process of a refurbishment project to my soon to be new home renewing the central heating system throughout the property, I would like to add UFH to the bathroom but would like to know whether...
    • russ9898
    • Thread
    • forum plumbing require ufh valve zone zone valve
    • Replies: 18
    • Forum: Plumbing Zone
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