Can someone help me out with setting up my XP Aqua RO/DI Flood Guardian? I'm confused as to where to put the solenoid. I attached a pic of my RO/DI. I think the instructions imply it's supposed to go between canister 1 and 2 in my diagram. but there is no space to put it. Will there be any harm in connecting it at the very end (after the last canister) where the water goes out to the storage container?