SunTouch® - Pentair

59
Installing relays (Continued)
Standard relay (Location 3): Position the relay (coil facing upward) on top of the mounting studs.
Align the relay flanges with the screw holes. Using a 1/4 in nut driver, secure the relay in place with
the two retaining screw.
Mounting studs for
relay screws
2-Speed Relay (location 3): Position the relay bracket on top of the mounting studs. Align the
bracket with screw holes. Using a 1/4 nut driver, secure the bracket with the two retaining screws.
Insert the relay (coil facing to the right-side) into the relay bracket and snap in place.
Mounting studs for
relay screws
Bracket
Insert 2-Speed
relay into
bracket
2. Route the relay cable into the slot between the low voltage compartment and the transformer
compartment to the SunTouch motherboard.
Note: If there is an Emergency Shut-Off Switch (ESO) circuit board installed in the SunTouch
Power Center, connect the relay wires to the ESO circuit board. For more information, see
“Emergency Shut-Off Switch Installation,” on page 73.
3. Connect the relay plugs onto the PUMP, AUX 1 or AUX 2 two-pin socket on the motherboard.
2-SPEED RELAY CONNECTION: The 2-Speed relay cable plug is connected to AUX 3 which controls the
pump’s high speed output. The AUX 3 circuit output can only be used to control the following:
2-Speed pump relay, one of the four speeds (RPM) of an IntelliFlo VS pump or the flow rate (GPM)
of an IntelliFlo VF pump. For installation and operation information, refer to the Two-Speed Relay
User’s Guide (P/N 520210).
Note: The IntelliChlor and IntelliFlo pump does not require a relay connection, it connects to
the COM Port (J11) connector on the SunTouch notherboard.
Note: For SunTouch motherboard wiring connections, refer to “SunTouch Motherboard
Connections,” on page 53.
SunTouch Solar, Pool and Spa Control System Installation and User’s Guide