Hi all, another newby for you to savage!!! I have bought an aqualisa digital bath filler, my water supply is via a conbi boiler, it states in the instructions it recommends i fit a 22mm pipe as close to the hot and cold inlet as possible (15mm inlets so happy to reduce back down. I pressume (good DIY word) 22mm will give enough supply for demand? however it does not state what length this 22mm pipe should be? As the outlet is 15mm, will it make much difference if i did not use 22mm and keep the inlets at 15mm? Any help much appreciated!!