Goldline GL-235-LV - User Manual

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Solar Pool Heating Control
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Automatically Maximizes Solar System
Heat Collection
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Precise Calibrated Temperature Setting Dial
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Single Model Handles all Systems-Old or New
Pools, Spas, 12 or 24VAC Actuators.
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Automatic Switch Over from Solar Heating to
Nocturnal Cooling if Desired
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Standard 120/240 VAC 50/60 Hz. Input
& 12 and 24 VAC Output
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Goldline’s Proven Reliability and Performance
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Industry’s Only 5-year Limited Warranty*
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Goldline Combo (GLC)
is GL-235 LV or GL-235 LV-HV
Control, Diverter Valve, Actuator & Sensors
Unique 5 Year Warranty*
*Refer to Limited Warranty Statement for Details.
Corporate Office:
42 Ladd Street
East Greenwich, RI 02818
(401) 884-6990
(401) 885-1500 Fax
Western Regional Office:
7171 Alvarado Road, Suite 104
La Mesa, CA 91942
(619) 462-4298
(619) 462-4498 Fax
Description
The GL-235 is designed to meet the need for easy installation,
dependable operation, and serviceability. The GL-235 incorpo-
rates unique, microprocesser based construction to ensure relia-
bility and accurate performance. The GL-235 offers advanced
operating features to provide differential temperature control,
selectable high limit, programmable recirculation freeze protec-
tion, nocturnal cooling and optional booster pump control.
AUTOMATIC HEATING: If the collectors are warmer than the
pool water by 4
N
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
N
F of the pool temperature or the pool temperature exeeds the
“desired temperature” set on dial.
AUTOMATIC COOLING: (Field selectable option) If the col-
lectors are cooler than the pool water by 6
N
F or more, and the
pool is above the selected desired temperature, the valve will
rotate allowing cooling via the solar collectors. The heat dissipa-
tion will stop when the collectors rise within 3
N
F of the pool tem-
perature 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
N
F to a high of 104
N
F for quick and
easy, user-friendly operation. The temperature set indicates set
pool/spa temperature, and the GL-235 will automatically dete
r-
mine if the water should be solar heated or cooled, thus maxi-
mizing the system capabilities.
TERMINAL STRIP CONNECTIONS: For input power, and
sensor inputs. Controls also have industry standard 3 pin connec-
tors for both forward and reverse valve actuator operation and
screw terminal connectors.
LED INDICATORS: 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
N
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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Summary

Product Description and Features

Automatic Heating and Cooling

Controls heating when collectors are warmer and cooling when cooler than pool.

Desired Temperature Setting

Single dial for setting desired pool/spa temperature from 70-104°F.

System Indicators and Outputs

Details terminal connections, LED indicators, and valve output specifications.

Recirculation Freeze Protection

Circulates warm water to prevent freezing at the collector sensor.

System Test Functionality

Allows manual override for testing system operation and valve status.

Product Specifications and Support

Model Variations and Outputs

Details GL-235-LV/HV models, outputs, and compatible actuators.

Temperature Sensor Details

Describes Goldline's 10K thermistor sensors and their specifications.

Goldline Combo (GLC) Package

Describes integrated control, valve, and sensor packages.

Warranty and Service Information

Covers 5-year limited warranty and customer support contact.

Operational Parameter Settings

Specifies differential, high limit, and freeze/cooling activation temps.

Installation Procedures

Mounting and Power Wiring

Guidelines for outdoor mounting and connecting power input.

Grounding and Valve Output

Details grounding requirements and low voltage solar valve control.

High Voltage Outputs (HV Models)

Controls booster pump or timeclock override on GL-235-LV-HV.

Sensor Installation and Wiring

Instructions for installing and wiring pool and solar sensors.

System Operation Modes

Normal and Test Operation

Explains AUTO, MANUAL TEST, and MANUAL OFF switch positions.

Troubleshooting No Power

Addresses issues with the power indicator and fuse replacement.

Heating Indicator Diagnostics

Diagnoses problems with the 'Heating' LED status.

Sensor Fault Indicator

Interprets 'CHECK SENSOR' LED status for troubleshooting sensors.

Technical Data and Warranty

Technical Assistance Contact

Provides contact information for technical support.

Temperature-Resistance-Voltage Chart

Lists sensor resistance and voltage at various temperatures.

Limited Warranty Terms

Details warranty coverage, exclusions, and responsibilities.

Goldline GL-235-LV Specifications

General

Brand	Goldline
Model	GL-235-LV
Category	Control Unit
Language	English