windsor-tg Posted October 5, 2022 Share Posted October 5, 2022 I recently had UFH system installed in a newly constructed orangery. I ran the UFH system today for the first time. The room temperature was 20.5C at the start and I had set the thermostat to reach 22.5C. After 2 hours of the UFH system running, the room stat was showing 21.5C but all the pipes surrounding the manifold were not hot to the touch. The zone valve of the UFH was open. I believe there is something to quite right. No other heating or heating of hot water was running. Any advice would be greatly appreciated. I have attached a photo of the UFH system. Link to comment Share on other sites More sharing options...
markc Posted October 6, 2022 Share Posted October 6, 2022 UFH pipes should not be hot to touch. UFH is not like a radiator where you feel heat straight away. Plus an orangery! I’m assuming this has a lot of glass and very little insulation so you UFH is going to be pretty useless. Link to comment Share on other sites More sharing options...
dpmiller Posted October 6, 2022 Share Posted October 6, 2022 Was the boiler turning on? Were the two big pipes hot? Link to comment Share on other sites More sharing options...
Andehh Posted October 6, 2022 Share Posted October 6, 2022 The plastic pipes should feel luke warm, are they? Get an IR thermometer for £15 and see the actual temp of the pipes. Link to comment Share on other sites More sharing options...
ProDave Posted October 6, 2022 Share Posted October 6, 2022 You can read off the temperature on the little thermostats on each of the isolator valves, if I zoom in to try and read it, it is too blurred to read the numbers. If you want to adjust the temperature, use the big white knob below the pump, turn it a bit and wait, it will take a while for any change in temperature to register. A pipe won't "feel" warm until it gets above body temperature so above about 37 degrees. 1 Link to comment Share on other sites More sharing options...
Temp Posted October 6, 2022 Share Posted October 6, 2022 (edited) What are the flow and return temperatures on the dials and have you seen them higher? Are the flow gauges indicating there is flow? Is the pump running? Edited October 6, 2022 by Temp Link to comment Share on other sites More sharing options...
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