I've recently moved in to a house and after having a radiator removed for decorating the boiler is at 0 pressure. I've trawled the internet and found a copy of the manual but to be perfectly honest it's a useful as a chocolate teapot and tells me nothing. As far as I can see, there is no key and no filling pipe. Wondered if somebody could help me (I'm hoping it will be obvious to those in the know)! Pictures to follow...