Recent content by DeLavel

I haven't had chance to look at this again until today, am still puzzling. What can cause the system to overpressurise? Having allowed water in to set the pressure at 1 bar (the minimum required) - and switched on the heating, the pressure gradually rises to about 3.5, whereupon the pressure...

Many thanks for the quick responses. Regarding the pressure...I had allowed water in until the pressure gauge was in the middle of the thicker line, assuming that this would be about right. I then ran the heating for about 20 mins, by which time the pressure had risen to about 3.5 and the...

Hi, hope that somebody may be able to offer advice on a problem with this boiler, about 5-6 yrs old. With the heating on, the system pressure rises until the pressure vessel operates and allows water to escape, at around 3.5 bar. When the system cools down again, the pressure drops too...