Just to let you know, draining bump tak and refiling it worked, pressure stays the same all the time, even with furnace on, pressure does'nt go up, thanks for great advise.
OK,
I've drained the bump tank, seems to me like it was full, after that I filled it again, it reads about 5psi on the boiler gauge. I do not know what it should read, I can adjust water pressure regulator up or down, does it sound about right, 5psi that is?
Hi,
I have a problem with my home's heating system. It is hot water heating with gas boiler. Problem I have is that when thermostat is calling for heat and gas boiler is on, system overpressurise causing reliefe valve to open, actually it only lets out few drops of water. System has a bump tank...
