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UFH issues

 
Air Source Heat Pumps (ASHPs)
Last Post by Saz 4 years ago
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Saz
 Saz
(@saz)
Reputable Member Member
Joined: 4 years ago
Posts: 119
Topic starter 17/03/2022 1:09 pm  

I'm still trying to work out what is going on with my underfloor heating. No mixing valve on it btw. I have a Vaillant Arotherm plus (high temp pump) fitted with a buffer vessel running UFH and rads. The flow temp is lower than the return temp on the UFH, even well before the floor has reached temp. I noticed the other day that when I clicked on my radiators the flow temp to my UFH dropped quite significantly by about 7 degrees. Why?



   
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