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Discuss Ufh problems temp control and radiators temp in the Water Underfloor Heating Installations area at PlumbersForums.net

Hi guys
Our recently installed UFH system is causing us trouble and we are struggling to get the fitter to help, problem one is we have to slowly build up the heat as the new floor is tiled but the only way to do this is by turning the boiler heating controls down as low as it goes, 30 degrees, if we have it set to 60 the temp on the flow is 45 degrees which is the maximum we can run at.
The mixing valve is fully set as low as it will go so effectively we can’t run the UFH at any other temperature than maximum 45 degrees when boiler is set to 60.
The other problem is when the UFH is running the radiators through the rest of the house struggle to get to temperature!
System is a Wunda with a Wilo pump, please help?
 

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