Mixing Pressure Problems

[John.g]

Excellent, the trick now is to try to figure out what is the heat input into your UFH to heat your house, don't know the Baxi heat output but whatever it is, it is more than likely that it can modulate down to 5 or 6 kw which in turn means that it should certainly just now ( 1C here in Cork) be running continuously to have any meaningful contribution to heating the house, is it?.

 

[John.g]

Any update on the above?.

 

[Savdefriz]

Any update on the above?.

It seems to be working of sorts. I think that the system is possibly too big and the flow of water too low to heat the house properly. I can get the rooms up to 21/22 but the circulating hot water never gets above 35. I suppose that this makes it more efficient, but it can't cope with sudden changes in temp! I managed to get the pressure balanced by a bit of trial and error, but I'm seriously thinking of buying myself a thermal imaging device so that I can see what's really going on!