Install the solenoid valve in the water line slightly upstream of the UV unit.
Connect the wiring from the Pura control module to the solenoid. The two wires from the Pura box are interchangeable.
The solenoid is a “normally closed” valve, which means that it must have a current supplied from the Pura unit to stay open. If the current is interrupted, the solenoid will close and prevent untreated water from entering the home. When power is restored, the solenoid will reopen.
The white handle on the solenoid provides an emergency bypass. If you open it when power is off, water will flow to the home but it will be untreated water.
(whole house & well units)