I WAS INFORMED BY A BRITISH GAS TECHNICIAN TO GET A CAR FOOT PUMP AND INFLATE THE EXPANSION VESSEL AT THE TOP REAR OF THE BOILER TO 0.7 BAR OR 10.1 POUNDS PER SQUARE INCH A LITTLE BIT FIDDLEY BUT IT HAS DONE THE JOB
THANK YOU B FOR YOUR HELP
PAUL.H, January 2010