Having moved into a new house in the summer with a Greenstar HE plus combi boiler, I decided to bleed the radiators. The pressure, which was at 1 bar has now dropped down to well below 1 bar. Hoe do I top up the boiler. There is what I think is called a filling loop at the side of the boiler with a flexible pipe. Can anyone help please
Thanks, Nigel
Thanks, Nigel