Product Overview

The Pentair SolarTouch® Solar Control System 521592 provides automatic, precise control of a swimming pool’s solar-heating system. It monitors the temperature of the pool water and solar collectors, then automatically directs water through the solar panels whenever sufficient solar heat is available.

This complete package includes the SolarTouch power center and digital control panel, a motorized valve actuator, a three-way solar drain-down valve, and two temperature sensors. The included water-temperature sensor has a 20-foot cable, while the solar-temperature sensor has a 40-inch cable.

When the solar collectors become warmer than the pool water by the selected temperature differential, the controller rotates the valve and routes filtered pool water through the solar-heating system. Once the desired temperature is reached or solar heat is no longer available, the valve returns to its normal position. The drain-down valve allows water to drain from the collectors after the circulation pump shuts off.

Key Features

Genuine Pentair solar-control package

Digital thermostat with LCD display

Monitors pool-water and solar-collector temperatures

Automatically activates available solar heat

Includes three-way solar drain-down valve

Includes motorized valve actuator

Includes 20-foot water-temperature sensor

Includes 40-inch solar-temperature sensor

Temperature calibration in one-degree increments

Adjustable heating start and stop differentials

Nocturnal cooling capability

Recirculation freeze-protection setting

Compatible with select Pentair variable-speed pumps

Weather-resistant composite control enclosure

LED operating and service indicators

Benefits

The SolarTouch system improves solar-heating performance by sending water through the collectors only when useful heat is available. This helps prevent the pool from losing heat through cooler solar panels and reduces the need for constant manual valve adjustments.

Its digital interface allows the desired pool temperature and solar differential settings to be adjusted directly from the control panel. The display shows the current water temperature, target temperature, and solar-heating operating status.

The system can also provide nocturnal cooling for pools that become too warm during hot weather. When properly configured, it circulates water through cooler collectors at night to help reduce the pool temperature.

Specifications

Included Components

• SolarTouch power center and control panel
• Motorized valve actuator
• Three-way positive-seal solar drain-down valve
• Water-temperature sensor with 20-foot cable
• Solar-collector temperature sensor with 40-inch cable

Warranty & Compatibility

Installation Information

The controller should be installed near the pool equipment in accordance with Pentair’s installation instructions and local electrical codes. The water sensor is installed in the plumbing between the filter and heater, while the solar sensor is positioned near the solar collectors.

The motorized actuator mounts to the included three-way valve and automatically directs water between the normal return line and solar collectors. Installation by a qualified pool or solar-heating professional is recommended.

Confirm Before Ordering

Verify the following before purchasing:

• Your pool uses a compatible solar-heating system.
• You need the complete 521592 package.
• You require the solar drain-down valve version.
• The included sensor cable lengths fit the installation.
• Your plumbing accommodates the included three-way valve.
• The installation location has the required electrical service.
• The system is not replacing a basic timer or full pool-and-spa automation panel.

Warranty Information

The Pentair SolarTouch system carries a three-year limited manufacturer warranty when purchased and installed according to Pentair requirements. Warranty coverage does not include improper installation, incorrect wiring, freeze damage, sensor damage, misuse, or failures caused by incompatible equipment.

Customer-Facing Q&A

Q: Does this package include the valve actuator?
A: Yes. It includes the actuator and three-way solar drain-down valve.

Q: Does SolarTouch control a gas heater?
A: It is primarily designed to control solar heating and can divert water between the solar system and other pool-heating equipment.

Q: Can it cool the pool?
A: Yes. The controller supports nocturnal cooling when properly configured.

Q: Does it include both temperature sensors?
A: Yes. A water-temperature sensor and solar-collector sensor are included.