You can assign any spare zone as the master/pump on Yardian. We suggest hooking up your master/pump to the last zone on your Yardian device. It can be easily set up as a "Master Valve" in the Yardian app.
There are dedicated master zone and 24VAC output.
There is no need for any setup in the Yardian app.
Set Up in Yardian App
Please click the Yardian Device Settings card in the Home tab:
Select the zone then click:
Now your Master Valve is specified and ready.