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ste b
The basic system is easy,the problem is what the last plumber has left you with,i cant see why some plumbers put iso valves on and some dont,i know now that the job i going to the last plumber has rounded both valves on the central heating pipework,probably trying to turn then with pliers or grips,the idiot,i know the basic sytem mate,just needed re-capping thats all,and now i re-capped its all clear again..........but thanks for calling me young lol.........pics of job to follow,piece of cake.....if i gotta drain down,i will drain down the system......