I have an 8-zone X-Core controller and would like to replace it with a Rachio 3 and have some questions because of how the X-Core was installed. When the builder constructed the home, he put the 24V converter in the attic, tapping into the junction box which provides power to the garage door opener. He then ran a 24V power line over to the corner when the irrigation controller was mounted and brought the line down to the controller for a connection. The result is that I have a 24V power line exactly where I need it, but bringing a 120V power supply would be a major PITA involving lots of attic work. Bottom line: I want to connect that 24V line into the Rachio 3.
I see two possible alternatives:
(A) Find out the specs on the power plug jack the Rachio 3 uses, buy one just like it, and place it onto the existing 24V line. Unknown: what the specs are and who can give them to me.
(B) On the right hand side of the Rachio 3, there’s a place for bare wire connection labeled as “24V”. This suggest to me there’s a direct connection between that connection and the power jack, meaning that (in effect) the bare wire connection could in fact be used to bring power to the Rachio, (The only thing I can think of to prevent that might be if there’s a diode which prevents current from flowing both ways.) Has anyone tried bringing power to a Rachio this way and if it worked? Is there any reason this approach wouldn’t work?
Thanks in advance for help and if anyone has an alternative approach, please pipe in!