X2 - Connecting a Pump Start Relay

NOTE: Complete this section only if you have a pump start relay installed. A pump start relay is a device that uses a signal from the controller to actuate a separate electrical circuit to energize a pump to provide water to your system.

The controller should be mounted at least a 15 ft (4.5 m) away from both the pump start relay and pump to minimize any potential electrical interference.


Route a pair of wires from the pump relay into the controller.


Connect a common wire to the C (Common) terminal inside the controller and connect the remaining wire from the pump start relay to the MV terminal.

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