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The GL-235 is designed to meet the need for easy installation, dependable operation, and serviceability. The GL-235 incorporates unique, microprocesser 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.
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 to within 1.5°F of the pool temperature or the pool temperature exeeds 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 deter-mine 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 Iindicators Show the status of the system operation, Four highly visible LED's show 1) power to the control, 2) power output directing valves and/or pump to collect heat (heating), 3) power output directing valves and/or pump to dissipate heat (cooling), 4) sensor fault indicator shows sensor(s) not operating properly.
GL-235 valve ouput Rating is the industry standard 24 VAC. A jumper switches the output to 12VAC for compatibility with older valve actuators. Output is fuse protected.
Recirculation Freeze Protection (field selectable operation) turns the GL-235 output ON, directing warmer pool/spa water through the collectors when near freezing tempera-tures 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. GL235 Controller Dimensions:H 8″ x W 6″ x D 4″
Standard Product Features GL-235 Solar Pool Control
Microprocessor based = digital accuracy
12/24VAC low voltage output (for valve)
Sensor fault detection with LED indicator
2HP@240VAC high voltage output
75F (24C) - 104F (43C) calibrated dial with "solar off" position
Re-circulate freeze protection (field selectable)
120/240VAC input
Nocturnal cooling (field selectable)
Shipping included in the continental U.S.
- 1 year manufacturer parts only warranty when purchased through a Hayward Authorized Online Reseller. PoolSupply4Less is a Hayward Authorized Online Reseller.
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