My daughter has just moved into a house with an old Servowarm Elite 50 boil er. Ater attempting to bleed a radiator which was almost empty we seem to h ave lost all water pressure in the central heating circuit and I can't see any means of refilling it. There's no visible filling loop and I don't see anywhere where one can be attached. There doesent even seem to be any press ure guage.
Does anyone have any advice on how to get the boiler up and running again a nd getting me out of the dog house for having offered to bleed the radiator .