20
SunTouch Pool and Spa Control System Installation and User’s Guide
Solar Menu (6/13)
Use the solar settings to setup solar or configure solar as a heat pump:
Setting Up Solar Control: Ensure that the solar temperature sensor is installed.
Installing Solar Heating: First, install the solar sensor at the collectors and connect to the SunTouch
enclosure. If “Heat Pump” is selected and is being used in place of a solar heating system, install Solar sensor
near the SunTouch Enclosure. Connect the wires to the SOLAR screw terminals according to the wiring
diagram on page 51. Plug the solar valve actuator cable into three-pin socket marked VLV C on the SunTouch
motherboard. If a solar booster pump is being installed, connect the pump to a power relay and plug a low
voltage cable from relay into the two-pin socket marked SOLAR on the SunTouch motherboard.
To access the Solar menu:
Solar
To enable a solar heater and set the temperature start and run time settings:
Menu button: Select the Solar menu.
Right button: Select the solar settings menu.
Up/Down button: Select Ye s or No to enable solar. If Yes is selected, Solar will be
displayed in the main screen.
If solar is enabled, the solar pump relay will switch on when the water temperature is
lower than the set temperature setting, and the solar sensor temperature is higher than
the water temperature. It might be necessary for you to adjust the pool and spa set
temperature settings separately. The correct temperature setting will be used, which
also depends on what position the pool and spa suction valve is currently in.
Right button: Select the Start Temperature Differential setting.
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 temperature has to deviate
by 3° at least to the specified set point temperature (in the Heat menu, on page 18)
before it switches on. Once the solar system is on it will start converging as it is
heating. This ensures that it will not continually be switching on and off.
Right button: Select the Stop Temperature Deferential 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.
Right button: Move to the “Enable Heat Pump” setting.
Up/Down button: Select Ye s or No to enable solar as a heat pump. Select Ye s if a
heat pump is being used in place of a solar heating system. If Solar is set to heat
pump, Valve A is free to be used by other circuits.
Left button: Press the Left button to return to the main status screen.
Main Menu 6/13
Solar
Solar Status
Enable: No
Start Tem Diff
Temp Diff: 9
Stop Tem Diff
Temp Diff: 9
Enable
Heat Pump: Yes