how do I recharge the system to bring up the system pressure after bleeding?

You should have a pipe that feeds into your boiler, on that pipe should be a small value, usually sits 8 inches below main boiler, open this value slowly till your bar reading shows one and a half bars of pressure, that should be more than enough.

William farquhars
December 2010

assuming this is a combi boiler you would use a filling loop if one is not already attached to the boiler

A1
December 2010