Thanks for a really useful thread - even after all these years. Just wanted to add to what yardie said about cleaning that buildup from around that top valve. My washer was progressively cleaning worse and worse. It finally got to the point of trying a fix or invest in a new machine. Cleaning...
Hi and thanks for providing such a helpful forum.
I'm working on a vented CH system (S plan). I've read on a couple of sites that the vent pipe should be a size up from the feed pipe. I'm sinking both the vent pipe and feed into a stone wall and would really like to use 15mm for both if...