Thanks ChrisR and others for their comments I thought it was just me missing a trick. I will have to persevere before the dreaded BO become permanent!!
This is a question that was asked in the past but I cannot see the answer and would be grateful for some help.
I have a thermo mixer shower which I have just located in a partition wall. I have piped the hot and cold to the mixer, a separate pipe is needed to the chrome wall outlet elbow (to...