The wiki faq doesn't seem to have any guidance: I have cracked the pan of a low level wc in a cloakroom and need to replace it. It is old with a bottom exit to the sewer which is only 150mm centre from the back wall. Most modern pans seem to be horizontal exit so if I buy one I will need a 90 degree bend and this means moving the pan forward by several inches, or is there another solution?
The only close coupled wc and cistern I have seen with a bottom outlet requires 210mm from wall to centre.
Pondering about efficacy of flushing, surely a high level cistern imparts more kinetic energy to the water than a low level one?
AJH