Pentair SunTouch Solar Only Menus , to start and stop solar water heating.

8
SunTouch Pool and Spa Control System Installation and User’s Guide
Solar Only Menus (Continued)
Start and Stop Temp Differentials: Use this feature to adjust the start and stop temperature deferential settings
to start and stop solar water heating.
Menu button: The Solar Status setting is displayed.
Right button: Press the button until the “Start Temperature Deferential” setting is
displayed.
Up/Down button: Adjust the temperature differential to start heating from 3° to 9°.
For example, if “Start” is set to 3°, this ensures that the solar collector water
temperature has to deviate by at least 3° to the specified set point temperature (in the
Heat (2/13) menu, on page 14) before it switches on. Once the solar system is on, the
actual water temperature will start converging towards the set water temperature as
it is heating. This ensures that it will not continually be switching on and off.
Right button: Move to the “Stop Temperature Differential” setting.
Up/Down button: Set the temperature differential to stop heating from 2° to 5°. This
setting sets how close to the target set point temperature to switch off solar heat.
Left button: Press the left button to return to the main status screen.
Solar Freeze protection: Use this feature to enable freeze protection for the solar equipment.
Menu button: The Set Water Temp setting is displayed.
Right button: Press the button until the Solar Freeze setting is displayed.
Up/Down button: Select “Yes” to enable solar freeze protection or “No” to disable
freeze protection. If “Yes” is selected, the circuit will switch on if the air temperature
drops to 36° F (2° C). This feature is used to protect the system plumbing from being
damaged during freezing conditions. Note: When freezing conditions are detected
by the air sensor, the filter pump will be switched on and water will circulate
continuously through the system.
Left button: Press the Left button to return to the main status screen.
Cleaner Freeze protection: Use this feature to enable freeze protection for cleaner equipment.
Menu button: The Set Water Temp setting is displayed.
Right button: Press the button until the Cleaner Freeze setting is displayed.
Up/Down button: Select “Yes” to enable cleaner freeze protection or “No” to
disable freeze protection. If “Yes” is selected, the circuit will switch on if the air
temperature drops to 36° F (2° C). This feature is used to protect the cleaner
equipment from being damaged during freezing conditions. Note: When freezing
conditions are detected by the air sensor, the filter pump will be switched on and
water will circulate continuously through the system.
Left button: Press the Left button to return to the main status screen.
Air Sensor (freeze protection requirement): Freeze protection for solar systems (“Solar Only” mode)
requires an optional ambient air temperature sensor (see page 38 for details). The air sensor must be enabled to
display the current air temperature on the main status screen. The optional air temperature sensor is used to
protect the system plumbing and equipment against freeze damage. For information about freeze protection for
circuits, valves and auxiliaries, see page 9. To enable or disable the air sensor:
Menu button: The Set Water Temp setting is displayed.
Right button: Press the button until the Air Sensor is displayed.
Up/Down buttons: Select Ye s to enable the sensor. Select No to disable the sensor
(and not display the air temperature on the main status screen).
Left button: Press the Left button to return to the main status screen.
Start Tem Diff
Temp Diff: 6°
Solar Freeze
Enabled: Yes
Cleaner Freeze
Enabled: Yes
Stop Tem Diff
Temp Diff: 3°
Air Sensor
Enabled: Yes