underfloor

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underfloor

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  1. P

    Underfloor heat pipe specification and pipe centres and radius bends.

    In my attempt to future proof my underfloor heating design to maximise the heat output at the lowest possible mean water temperature, I am planning pipe 16mm dia pipe centres at 133mm governed by the nature of the installation (3 pipes per space between floor supports at 400 mm ctrs. -...
  2. C

    Underfloor copper pipes: corrosion and pin holes

    Bungalow built in 2001. All copper pipework (water and heating) runs in channels of expanded foam polystyrene between a concrete floor and OSB boards. Pipe are lagged in stitched felt and what looks like bubble wrap with sand (?) over the top. During the bathroom refit, I lifted up some of the...
  3. P

    Refilling underfloor heating

    Hi, gotta a bit of an issue with refilling my underfloor heating. Am I right in saying that the flow meters along the manifold should be on the top rail, but as you can see they are at the bottom? Also have I got to loosen off the electrical actuators at the top to refill the system? Cheers
  4. D

    Nu-heat Blend valve not working on underfloor heating

    Hi, I have I blend valve from Nu-Heat ( they bought it from Reliance, as per attached spec). I have dismantled the valve now 3 times and replaced it with new components from Nu-Heat but the valve is not working properly. The valve replacement seems very simple with 4 main components and some...
  5. mehmet

    Combi underfloor heating and external boiler connection?

    Hello, I have a gas boiler in my apartment that heats a net area of 300 m2 with an underfloor heating system. The boiler has a capacity of 45 kW. There's no issue with the heating system, but I want to increase the hot water capacity. I plan to connect an external 200-liter boiler. How can I...
    • mehmet
    • Thread
    • boiler combi connection heating underfloor underfloor heating
    • Replies: 3
    • Forum: Boilers
  6. C

    Renewing inhibitor in underfloor heating system.

    We have a Daikin Air Source heat pump feeding our hot water and under-floor 8 port manifold heating system. The Daikin has just had its annual service and the engineer commented that the water looked discoloured and that the inhibitor needed replacing?? Is this an easy procedure? I'm pretty...
  7. av2597

    Wet Underfloor Heating Using Woodburner Boiler

    Hi all, I wanted to ask a general question about an underfloor heating system our plumber is proposing and if this solution will be sufficient to heat the rooms. We have only a woodburning stove (15kW nominal output) that heats our open plan lounge/kitchen/diner directly (6.5kW from the...
    • av2597
    • Thread
    • boiler heating underfloor underfloor heating
    • Replies: 1
    • Forum: Boilers
  8. MarkWillGreen

    Add underfloor to S-plan - S-plan+? closely spaced tees? new boiler?

    Hi All, Looking for a bit of advice on the best way to pipe this. - 24kW Worcester regular boiler in kitchen, approx. 9 years old - unvented tank, zone vavles, pump, expansion is on first floor in airing cupboard - Currently piped as S-plan. - Hive controls. - Would like to fit 6-zone...
  9. H

    Underfloor heating loop not raising floor temperature

    I'm attending a wet underfloor heating system, it's an old one ..No flow meters, just adjustable valves on the returns with conventional actuators. Problem is , one loop (far right in photo) isn't heating the floor (timber suspended) . I've bled the loop via a hosepipe, shut off all the other...
  10. D

    Wet underfloor heat not coming on in any zone

    We have UFH throughout downstairs. I have had one coil replaced. I have had the thermostats checked that they are linking to the correct actuators, which they are. the cupboard where the UFH system is gets hot when I turn up the thermostats in one or all zones. The boiler is coming on but the...
  11. D

    Redbrick house from 1904 - Already has underfloor heating

    Hi, I have an 1904 redbrick 2,500 square feet house. We have UFH on every floor. 3 Floors House is reasonably well insulated but far from perfect. Would there be any point in installing a "air to water" heating system that could link into my existing UFH??
  12. H

    Honeywell Underfloor heating controllers

    Hi there, I'm considering having my heating system controlled by Honeywell Evohome. I have a question about the underfloor heating controller.... I have a single zone water underfloor heating in the kitchen. The controller is currently a Wunda. I've never been all that happy with it because...
  13. D

    Help! Moved into house with underfloor heating

    Hi, I’ve just moved into a house with underfloor heating and I’m not sure how to turn it on/if it’s working. I have a small black handheld remote that doesn’t seem to be fully working (sometimes responds to touch, sometimes doesn’t). I don’t think I can insert pictures here but is there...
    • Deleted member 130760
    • Thread
    • heating house underfloor underfloor heating
    • Replies: 2
    • Forum: UK Plumbers Forums
  14. R

    Underfloor heating advice for a very shaky floor (not kidding)

    Hi all! So yes, Richter level 7 earthquake at least. I need to plan an underfloor heating for a 4x4 expedition/overlanding off-road vehicle, and it has to be able to withstand hundreds of miles of Australian corrugated roads and many thousands more of very bumpy roads of all sorts. A shaky floor...
  15. S

    Wet underfloor heating connection

    Hi, I have had an extension built with underfloor heating installed. The area is open plan and some 64 sqaure metres. Two pipes of 100m each were used - so the manifold has two "ports". I have a couple of questions if anyone can help please. 1. Is the 200m of pipe enough for the size of the...
  16. V

    Underfloor heating not getting hot enough

    My daughter has just had a new boiler, her system is radiators to upper floors and underfloor to all of ground floor. Despite the valve serving the underfloor being turned up to a high temperature and the pipe leading to the pump being very hot the flow and return pipes on the manifold are only...
  17. R

    Radiator vs underfloor heating

    I am in the process of having an extension for approx 4m by 6 m including sky lantern Whilst I appreciate underfloor heating would be good don’t think I can afford this however would a large vertical radiator be enough to heat the area space
    • Rupssy
    • Thread
    • heating radiator underfloor underfloor heating
    • Replies: 0
    • Forum: UK Plumbers Forums
  18. E

    Cleaning Magnetite in underfloor heating system

    Hi! I have mostly underfloor heating in my house and one new radiator and two old. A bit of metal pipes and three manifolds, but mostly PEX-pipes. The heat source is a Vaillant FlexoCompact 88/4 heatpump. The plumbers which installed the heatpump added Elysator Sanol (cleaning agent) and...
  19. R

    URGENT My bathroom underfloor heating is not working

    My bathroom underfloor heating is not working. It does work in the other rooms except bathroom. What could be reason ? I completely closed bathroom thermostat and re opened it still doesn’t respond.
    • Rose Pekcan
    • Thread
    • bathroom heating underfloor underfloor heating
    • Replies: 1
    • Forum: Central Heating Forum
  20. J

    Radiators vs Underfloor heating large space

    Is underfloor heating much better than radiators for a largish open plan space? The room is 46 m sq, L shape open plan space with 4.6m of bifolds and another 2m and 3m run of bifold on the L, pitched roof on 3m of the space meaning a bit more than standard ceiling height there, total volume of...
    • JamesR8
    • Thread
    • heating radiators underfloor underfloor heating
    • Replies: 3
    • Forum: Central Heating Forum
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