Recharging Pressure Vessel?

[Timmy_T]

I've got an old Gloworm Swift Flow combi boiler that is hanging on in there at about 13 yrs old!! I've noticed that recently the pressure creeps up from about 1 bar to 2 bar when the heating comes on, so I believe the Pressure Vessel needs recharging.

I last did this about 2 yrs ago. Is this a reasonable time between charges, or should it last longer than this?

Thanks, TT

 

[kevplumb]

bout right

after 3 years it should be checked at service (never is tho)

 

[Timmy_T]

Brill, thanks for that!

Just to put my mind at rest, how much pressure increase should there be as the CH kicks in? This rises about 0.3 bar now I've re-pressurised the vessel. Is that about right?

 

[kevplumb]

sounds ok

pressure rise depends on the precharge pressure in the ex v and the total system volume

 

[Timmy_T]

Super! Thanks a bunch.

I was told that a combi boiler would only last about 10 yrs, but this one seems to go on and on (touch wood)!!!!