Thanks for all your comments - we seem to have created some controversy about system boilers.
So, to clarify, the overflow pipe is one that runs to the outside of the house. I guess that means we'll need it servicing to attend to the valve?
Ginadavid
So, to clarify, the overflow pipe is one that runs to the outside of the house. I guess that means we'll need it servicing to attend to the valve?
Ginadavid