Markca Posted November 23 Share Posted November 23 Hey all, so we have UFH on separate manifolds for upstairs and down. however, the pumps seem to take over and either push heat to one or the other. For us to heat up the hot water, we have to do this in the middle of the night when the heating isn’t running. any ideas on how to fix this? thanks! (I’ll post some photos of the system) Link to comment Share on other sites More sharing options...
Markca Posted November 23 Author Share Posted November 23 Link to comment Share on other sites More sharing options...
Markca Posted November 23 Author Share Posted November 23 Link to comment Share on other sites More sharing options...
ProDave Posted November 23 Share Posted November 23 Have you just moved into this house? Has it ever worked properly? From your pictures I see a couple of isolating valves turned off (shut) and a switch turned off. Why are those like that? Link to comment Share on other sites More sharing options...
Markca Posted November 23 Author Share Posted November 23 7 minutes ago, ProDave said: Have you just moved into this house? Has it ever worked properly? From your pictures I see a couple of isolating valves turned off (shut) and a switch turned off. Why are those like that? We’ve been renovating it for a few years. There are things off as there’s a whole other manifold section that isn’t in use yet for an additional floor. So they can be ignored. has it ever worked properly? Not perfectly! Link to comment Share on other sites More sharing options...
ProDave Posted November 24 Share Posted November 24 Diagnosing it probably needs a good plumber / electrician. It looks to be be plumbed S plan, i.e. a single 2 port valve for each manifold and one for the hot water, and looks to be fired by a gas boiler, so no reason at all why it should not work with any combination of UFH and hot water all at the same time. You need to be methodical. e.g Start with just one UFH manifold on. Check the motorised valve feeding that opens and only that one. And check that only that manifold receives no hot water. Then do the same for the others, just one at a time. Once you have determined they all work one at a time, try 2 together, and again make sure only the motorised valves that feed those open, and only those receive hot water. It will take time because between each test you have to turn it all off and let everything cool down otherwise you can't be sure where the hot water is flowing and not. Write down your findings, it is easy to get confused if you don't. Link to comment Share on other sites More sharing options...
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