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thanks yes, there looks like a flow back to to boiler. on the t junction is a mixer valve. obviously hot water from boiler comes in one pipe / the other pipe feed from the 'out' bit of the uf / with the 3rd pipe going to the pump which is going to the manifold and into the actual uf sysyem...

hi because i can fee it vibrating. there are 3 settings, as i move though 1-3 i can feel it stop/ start / stop; so i am sure that it works. i am trying to do some more investigation, and i am wondering whether it has been plumbed correctly. my suspicion is driven by a t pipe which is...

Hi hope that you can help as i am freezing cold ! i moved into a converted farmhouse which was blessed with tiled floor in lounge, kitchen & utility - warmed by underfloor heating. i am really struggling to get it working i had a new JG timezone clock fitted, new wiring and 4 new JG...