I have a Worcester Bosch 19\24cbi boiler that is kettling really badly.
The system has ben treated with sentinel x100 then x200 and x300.
It has done since it was installed 3 years ago,any suggestions?
I have a Worcester Bosch 19\24cbi boiler that is kettling really badly.
The system has ben treated with sentinel x100 then x200 and x300.
It has done since it was installed 3 years ago,any suggestions?