how do i re-presurise by expansion vessel and to what pressure ?? thks
wayne, September 2009
did you manage to resolve the problem? If so, what did you do as this is happening to my boiler?
dg, September 2009
no db thats only if you get a excessive rise when system hot ie using the heating.
max rise even when cold is like mentioned below...plate exchanger
a, August 2009
had this problem myself it was the expansion vessel needed pumping up this solved mine
db, August 2009
Disconnect the Filling Loop to prove that it is not letting by, if pressure continues to rise then the Hot Water Plate Heat Exchanger is probably to blame
