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UFH pipes not hot enough


windsor-tg

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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. 

984B44D6-80C0-4F79-A10A-852EF0478FEE.jpeg

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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. 

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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.

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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 by Temp
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