Unvented expansion vessel pressure

[xr4x4]

We have a Unvented, direct hot water cylinder with a separate expansion vessel.

What pressure should this be set to?

Are they standard items (ie for boilers) or are they special to these cylinders?

 

[muggles]

Pressure will normally be given in the cylinder's instructions, expansion vessel is a special one for potable water

 

[seco services]

water ones useally white.

 

[xr4x4]

yeah thanks for that, it is white.

its pretty inaccessible, apart from the schrader valve, just.

i wanted to check the pressure inside it, to check it was correct as im having a issue with the hot water.

roughly what should the pressure be?

can i also use the trick, that if water comes out, its blown?

thanks.