I have three Gen 3 controllers (16, 12 and 12 zones) that I am moving into the same physical location and running valve wires from five manifolds around the yard. I do not have a pump controller, moisture sensor, etc. just a straightforward bunch of valves to control. I read about the Easy Irrigation Isolator but that only allows one Controller to run at a time. I may want to run zones attached to different controllers at the same time since I have plenty of pressure and volume.
Can I connect the COM wire between the controllers and share it with ALL the white wires from the valves? Then I wouldn’t have to worry having a manifold with 5 valves with 2 zones on Controller 1 and 3 zones on Controller 2.