londonman wrote on Jul 3rd, 2017, 9:45pm:The cold water comes from our treatment plant down in the cellar. Pumped at around 2 Bar...I can alter that. The cold feed feeds the cold water tank in the loft and the cold taps. The cold water tank feeds the hot water tank which then feeds the taps etc in the house.
So the cold water tank is vented making the hot taps are gravity fed).
I think whole house pumps are designed to boost both hot and cold so will you be replacing the existing 2 bar pump with the cold half of the whole house 4.5 bar pump?