How does it work?Zone valves are the individual valves that operate a group of sprinklers or drip emitters. A Hydrawise controller supports 6 or 12 zone valves, depending on the model. Typically, one zone valve is turned on at a time and controls the irrigation in a specific area of your landscape. Whenever one of the irrigation zone valves is told to open by the controller, the controller also signals the master valve to open. This means that the master valve acts somewhat like a backup valve or a fail-safe valve. The purpose of the master valve is to shut off the water to the irrigation system when no zone valves are operating. The image below shows a master valve operating connected to Zone 12 on a Hydrawise controller.
How is it configured?With a Hydrawise controller, any one of your 6 or 12 zones can be configured to act as a master valve. The master zone is configured on the Zones and Schedules page above your list of irrigation zones.Initially, no master valve is configured and all zones on the controller can be used as normal zone valves. To select a master valve, select the relevant zone from the list next to the text that says Master valve.
How to set the MV on the Hunter Pro-HC
With the Pro-HC, setting the master valve (MV) is similar. All you need to do is select whether you have a MV as shown below.
You no longer have to select which zone the MV is connected to, as the option will be different depending on the controller you select when setting up your controller for the first time.