Recent content by Thirsty

Thanks ismellgas The pressure does drop to between 1/2 and 1 bar as it cools. Excuse my ignorance but what does pumping the expansion vessel involve? I neglected to mention that the pressure release overflow pipe outside is weeping constantly. Not a lot, about a couple of thimbles full...

Help!! I've recently fired up the central heating to check it all works before the cold sets in. All worked fine, radiators bled, system topped up to get the pressure back up to just over 1 bar. Shortly after doing this, I noticed that the pressure kept rising whilst the heating was on. It...