Hayward AquaSolar® Controller - GL-235

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$679 $799

Hayward Swimming Pool Solar Heating AquaSolar GL-235/ GL235 / AQUA SOLAR / AQUASOLAR BY GOLDLINE CONTROLS CANADA www.poolproductscanada.ca

Product Description

 The AquaSolar® GL-235 is designed to meet the need for easy installation, dependable operation, and serviceability. The GL-235 incorporates unique, microprocessor based construction to ensure reliability and accurate performance. The GL-235 offers advanced operating features to provide differential temperature control, selectable high limit, programmable recirculation freeze protection, nocturnal cooling and optional booster pump control.

Hayward Item Code: GL-235 (NOT Included: Valve & Actuator)


  • Automatic Heating
    • If the collectors are warmer than the pool water by 4° or more, and the pool is below the selected desired temperature, the valve will rotate allowing heat collection.
    • This heat collection will stop when the solar sensor falls too within 1.5F° of the pool temperature or the pool temperature exceeds the "desired temperature" set on dial.
  • Automatic Cooling (Field Selectable Option)
    • If the collectors are cooler than the pool water by 6°F or more, and the pool is above the selected desired temperature, the valve will rotate allowing cooling via the solar collectors.
    • The heat dissipation will stop when the collectors rise within 3°F of the pool temperature or the pool temperature is lowered below the set desired temperature.
  • Single Setting
    • For desired temperature, the GL-235 logic is set by a single dial adjustment with the desired pool/spa temperatures clearly indicated.
    • The dial is calibrated with the temperatures from 70°F to a high of 104°F for quick and easy, user-friendly operation. The temperature set indicates set pool/spa temperature, and the GL-235 will automatically determine if the water should be solar heated or cooled, thus maximizing the system capabilities.
  • Terminal Strip Connections
    • For input power, and sensor inputs.
    • Controls also have industry standard 3 pin connectors for both forward and reverse valve actuator operation and screw terminal connectors.
  • LED Indicators
    • Displays the status of system operation:
      • Power to control.
      • Power output directing valves and/or pump to collect heat (heating).
      • Power output directing valves and/or pump to dissipate heat (cooling).
      • Sensor fault indicator shows sensor(s) not operating properly.
  • GL-235 Valve
    • Output rating is the industry standard 24 VAC.
    • Jumper switches the output to 12 VAC for compatibility with older valve actuators. Output is fuse protected.
  • Recirculation Freeze Protection (Field Selectable Operation)
    • Turns the GL-235 output ON, directing warming pool/spa water through the collectors when near freezing temperatures are reached at the collector sensor.The GL-235 will allow recirculation when the collector temperature rises to 42°F.
    • Two 10K Ohm sensors are required for operation. One or more freeze snap switches are recommended if freeze recirculation protection is utilized. Important - see installation instructions before using Recirculation Freeze.
  • System Test Switch
    • Allows the user to manually over-ride the automatic function of the GL-235 and verify operation.

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