Would like to have 1 flow meter using 3 16 zone controllers. I have 48 zones in my system.
According to the current limits, one can only assign 2 meters per 1 controller. It would be necessary to install 3 WFS to have 1 per controller.
Check this link for the exact explanation.
I hope this helps you.
See my proposed layout.
3 FlowMeters.jpg1400x733 135 KB