ufh

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...

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...

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...

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...

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...

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...

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...

I am currently connecting my UFH system to my combi boiler (Worcester Bosch 42CDI). I will T off from the existing radiator flow and put in a 2 port motorised zone valve on the rad flow, will I need a 2 port zone valve on the UFH circuit? I cant ever see a situation when my UFH will not be...

Hi I have just had a sunroom built 16m2 and want underfloor heating. I cannot decide between wet or the mats. If i have wet the floor is timber suspended 600mm with polystyrene insulation between timber. Does anybody have any recommendation about how to do this? Do I replace polystyrene with a...

Hi All I am trying to get to grips with the details of installation of the floors on the rebuild of the first floor of our house. All of the old floor covering has been removed and we are fixing and replacing joists as required. The joists are spaced at 400mm centres. The intention is to fit...

Hi All Some advice would be appreciated. We are doing a full refurbish on our house at the moment, fitting underfloor heating throughout amongst a lot of other work. All the stud walls and rotten chipboard floors have been removed on the first floor in preparation for the new layout. The new...

Hi All We are renovating a 1980s built house and intend to fit UFH throughout. In the existing part of the house the floor is made up of 4" of hardcore, DPM layer, 4" concrete with 2" screed over the top. Given that there is no insulation in the existing floor will overlay UFH in EPS panels...

Hi I have a Solfex UFH system installed by my builder but without any great knowledge (used Solfex design service..) It has three zones, one of which has two loops controlled by the same thermostat and actuators on the return manifold for control. Although the Solfex design defines the flow rate...

Hi, I'm renovating and old (~1870) house. Having pulled up the floor coverings and original (knackered) tiles downstairs, I've discovered that 2 rooms and a sort or corridor area have a solid concrete-like base, although all at different heights, while another room has a suspended timber floor...

Hi, I was wondering if there is anyone that can provide advice on my UFH design (attached). Each Run is circa 75m, I have gone for 150mm spacing at the front as there are large bi-fold doors. The top section has sufficient room height to install roughly 75mm insulation then 15mm pipes and a...

Hi all, I've been using this forum for many years now and found it particularly helpful. I'm now facing an interesting challenge and I'm getting a bit of conflicting advice so thought to tap into the diynot community more directly this time. I currently have a regular boiler with a vented hot...

We are embarking on a refit of our ground floor kitchen/lounge and would like to install electric underfloor heating. Any assistance on the considerations would be great. -Large 4ft ventilated subfloor cavity ;wooden joists; chipboard subfloor. Thinking we might use 100mm polystyrene insulation...

Am considering fitting the Vaillant weather compensator, the logic behind it makes sense to me but not sure if we have the right setup for it to work properly. Existing system is: 637 Plus system boiler UniStor cylinder Zone 1 - Radiators (upstairs & downstairs) with Honeywell room stat Zone 2...

I have UFH downstairs and Rads upstairs. The CH out from the boiler goes through a Y Splitter and I then have a 2-port motorised valve on each CH circuit, one leads to the upstairs CH rads and is all controlled via one thermostat, the other goes downstairs where it meets the UFH manifold...

Hi folks, I have looked for an answer to this but not come up with anything... maybe some experienced people will be able to advise. I am installing an 8-zone underfloor heating system, with a thermal actuator on each zone. I have a wiring centre that will open the relevant actuator when there...