Pentair SunTouch Installing and Connecting Temperature Sensors

SunTouch Pool and Spa Control System Installation and User’s Guide

Installing and Connecting Temperature Sensors

To install the water sensor:

1. Select a convenient location to mount the water sensor in the plumbing system between the filter

pump and filter. Drill a 5/16" diameter hole in one side of the pipe,

2. Insert tip of sensor into the hole. Use the band clamp to secure the sensor to the pipe. Tighten the

clamp just enough so that the o-ring begins to flatten. Do not overtighten

3. Run 22 gauge two-conductor cable (included) between the sensor SunTouch motherboard. Route the

wire up through the low voltage raceway to the motherboard.

4. Fasten the cable to the plumbing with cable ties.

5. Cut off the excess wire and the strip conductors ¼ inch. Use waterproof connectors (provided) to

connect the sensor to cable. Insert the wires into the WATER SENSOR screw terminals (J9) on

right-side of the motherboard. For SunTouch motherboard wiring connections, refer to “SunTouch

Motherboard Connections,” on page 51.

The SunTouch system will automatically detect an installed air sensor to protect the system if freezing

conditions occur. By default, the air sensor is always ON. Freeze protection for a “Solar Only” system

requires an additional air sensor (P/N 520272). To disable the air sensor, see “Advanced Menu (8/13): Air

Sensor” on page 24.

To install the air sensor:

1. Mount the sensor in the open air, in a shaded area, away from air conditioners. During the winter

months, to avoid freeze damage to pool and spa equipment, mount the air sensor in a shaded area to

assure proper temperature readings. The SunTouch main screen displays the current ambient air

temperature.

2. Route the wire through the low voltage raceway to the motherboard.

3. Fasten the cable to the plumbing with cable ties.

4. Cut off the excess wire and the strip conductors ¼ in. Insert the wires into the AIR screw terminals

(J9) on right side of the motherboard.

Run a two-conductor cable between the sensor and the SunTouch enclosure.

To install the solar sensor:

1 Mount the sensor on a flat surface, with the same exposure to sun as the solar collectors (next to the

collectors is recommended) or any sunny location. Do not let the sensor touch the panels.

WARNING: DO NOT DRILL HOLE AND CLAMP SENSOR INTO SOLAR PIPE. For

glazed panels, install the sensor between collector and glazing.

2 If necessary, splice a two-conductor extension wire to the sensor. Run two-conductor cable between

the sensor and the SunTouch Power Center. Use waterproof connectors to connect the sensor to the

cable. Use twisted pair 20 AWG outdoor rated sensor wiring and be sure the wire connections are

protected from the environment. Use shielded cable for long runs or runs near other electrical wiring.

3 Strip the conductors ¼ in. Insert the wires into the SOLAR SENSOR screw terminals (J9) on right

side of the motherboard.