I've been looking into using a venturi shower and was kindly sent a large amount of data by Trevi. One thing that does puzzle me is that their diagrams show the DHW head to be to the *bottom* of the cold water tank and not the internal water level as I would expect.
Surely the head is the effective weight of the total cold water column and therefore should be measured to the water level in the cold water tank. I appreciate that most tanks aren't that deep to make a significant difference but am I wrong or are they wrong ?
Rob