All. As mentioned in another post, I'm having problems with my recently installed under floor heating. I have a general question I hope you can help with. My underfloor heating is of two different types - 4 zones are buried in concrete scree and further 3 zones are laid on aluminium covered overfloor with self-levelling compound on top. The concrete scree zones have porcelain tiles on top and the overfloor zones have vinyl (LVT). There is currently a consistent and we are told minimum manifold outlet temperature of 40 degrees, irrespective of whether this is going into concrete or the overfloor. This is causing the LVT surface to exceed the max of 27 degrees. Is there a way to further reduce the temperature of the water going into the LVT? Or, can you not use a single manifold - a Wunda Premium - to support multiple floor types? Many thanks, Steve.
Correction - the manifold outlet temperature (which we have been told is the minimum setting) is currently 50 degrees. And perhaps related - the manifold is periodically emitting a tone which resembles the tone made when old tv broadcasts used to end.
Have you taken a reading of the actual floor surface temperature with a laser thermometer? If it was 50 degrees it would almost melt the soles of your shoes
That’s really high, you need to increase the thermal resistance if you are unable to turn it lower (which I really don’t understand why this is the lowest setting). Considering you need to remove a 10oc delta roughly I’m not sure if it’s going to be possible without increasing the depth on the screed by quite a margin. Sent from my iPhone using Tapatalk
Thanks. I'm beginning to think the same. I reached out to the provider of the UFH manifold - Wunda who replied: "The flow temps of 40deg and 33 back is more or less correct for our system" I saw the installation of the self-levelling compound and I'm not kidding when I say I could see the outline of some of the pipes!
That’s way too shallow if you can see the outline of the pipes no wonder you’re getting really high surface temperatures. Sent from my iPhone using Tapatalk
Them pipes needed burying deeper so now it's going to be a 'pita' to rectify that. Had the same argument with a builder who tried to tell me I need to make sure my screed is 12mm thick minimum .....'err no sunshine, you should have got someone in who knew what they were doing and your pipes would have been deeper'
