If there is a Master Valve installed on your existing or newly installed irrigation system, you can incorporate it into Moen's Smart Sprinkler Controller through the Moen Smart Water Network application. To do this you will first need to have the application already installed with your Smart Sprinkler Controller added. If you need to perform the steps to add the Smart Sprinkler Controller, note that you will have the ability to enable the Master Valve toggle during this add process, but you will need to connect the Master Valve wires to the MV terminal on the Smart Sprinkler Controller.
If the Moen Smart Water Network application and Smart Sprinkler Controller are already installed and configured, connect the Master Valve wires to the MV terminal on the Smart Sprinkler Controller. Within the Moen Home screen tap the Smart Sprinkler Controller icon, Settings tab, and then tap the Device tile to access the Device page. Enable the Master Valve toggle and click the Save button.
If you have questions or help with your Master Valve, please contact the company for your irrigation system for assistance.