expansion vessal

[dailimbo]

can anyone tell me the correct pressure for a worcester bosch 350 combi
expansion tank.
the one I took out five weeks ago was 4bar capacity,
the one set to me via woseley spare parts is 3 bar.
boiler works ok but it seems to stay on longer and I am using twice as much gas , compaired to a nieghbour. I am dreading my gas bill.
thanks dailimbo

 

[mikej2005]

No idea I'm afraid, but this might be useful :

http://www.worcester-bosch.co.uk/index.php?fuseaction=literature.detail&con_id=255834&from_id=5029

 

[gas4you]

Most EV's are ok with being pressurise to about 0.9 Bar. Can't see how this will affect your gas bill though

 

[Nixt]

can anyone tell me the correct pressure for a worcester bosch 350 combi
expansion tank.
the one I took out five weeks ago was 4bar capacity,
the one set to me via woseley spare parts is 3 bar.

OP- you're confusing the above, which are the vessel's max test/capacity pressures with the pre-charge pressure, which on older Worcester combis was min 0.5 bar