Have a potterton puma 80 and 8 radiators (7 with TRV. I have not found any obvious leaks in the plastic pipework and the system seems to work very well. The rads do not seem to be making air and work very well. However, about once a month I find the pressure at near zero and I top up again to 1 Bar. Is that about normal or something I should worry about. Many thanks to those who respond.
- posted
20 years ago