inhibiter

[godfrey1971]

hi all
can someone help me ,I added some extra radiators into a system , when I came to bleed the system I could not get the radiators downstairs to get hot (these are part of the old 10 mm system . any way I messed about with it for 2 days still no joy, as it was a relative I said I will leave for a few days after about 4 days the rads suddenly started working, so obviously there was an airlock somewhere ,my question is now I need to put in an inhibiter, as its a gas fired combi whats the best to put the chemical in the system whithout draining the whole system.and creating an air lock again.
thanks

 

[REDSAW]

turn off both valves on your bathroom rad, drain some water out. then take of bleed bung and add inhib.

 

[dave8085]

pity you havnt got a magnaclean installed, protects sysyem and can be used as a dosing point, worth thinking about !!!