Hi, please can you advise? When the CH is used the pressure gradually reduces over a period of a couple of days, and then the system wont run. I have replaced the relief valve which was definitely faulty, and now the pressure holds up for much longer now - a couple of weeks. Is the expansion tank likely to be faulty? What pressure should it be charged to?

Norman John, July 2006

how do u set the pressure to 1 bar

LEE REILLY, November 2006

the exspansion vessel is usually charged to about 1bar.......... isolate flow and return valves on boiler drain through relief valve to take pressure off exspansion vessle when drained you can attach a foot pump with suitable gauge and re set pressure

baldy02920, October 2006