61
SunTouch
®
Control System Installation and User’s Guide
Installing and Connecting Temperature Sensors
Water Temperature Sensor
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 3/8” 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 and the SunTouch
®
Control
System 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 the SunTouch Control System motherboard wiring connections,
refer to “SunTouch Control System Motherboard Connections,” on page 53.
Ambient Air Temperature Sensor (for freeze protection)
The SunTouch Control 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 (8/14):
Air Sensor” on page 24.
To install the air sensor:
1. To avoid freeze damage to pool and spa equipment, mount the sensor on a flat surface in a shaded
area, in the open air, to assure proper temperature readings. If possible, mount the sensor near the
SunTouch Control System Power Center. The SunTouch Control System main screen displays the
current ambient air temperature.
2. Route the wire through the low voltage raceway to the motherboard in the power center.
3. 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.
Solar Temperature Sensor
Freeze protection for a “Solar Only” system requires an additional solar sensor (P/N 522101). To disable the
air sensor, see “Advanced Menu (8/14): Air Sensor” on page 24. Run a two-conductor cable between the
sensor and the SunTouch Control System Power Center. The maximum sensor cable length is 300 ft from the
SunTouch Power Center.
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 Control System 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 (300 ft. total wire
length maximum) or runs near other electrical wiring.
3 Strip the conductors ¼ in. Insert the wires into the
SOLAR SENSOR
screw terminals
(J9)
on right
