7
CONNECTING A MASTER VALVE
NOTE: Complete this section only if you have a
master valve installed in your irrigation system. A
master valve is a “normally closed” valve installed
at the supply point of the main line that opens only
when the controller initiates a watering program.
1. At the Master Valve, attach the common wire to the black
solenoid wire of the valve. Attach a separate control wire
to the remaining red solenoid wire.
2. The common wire should be attached to the C terminal
inside the controller. The other wire coming from the
master valve should be attached to the MV terminal inside
the controller. Tighten each terminal screw.
Valve Common Wire
Valve 1
Valve 2
Valve 3
Valve 4
Valve
Wires
Master Valves
Master Valve Wire
(Black Lead)
(Red Lead)
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