Installation
Mounting
The GL-235 is designed for outdoor use. Mount the box vertically with the knockouts facing
downward. For safety, the GL-235 must be a minimum of 5 feet (horizontally) from the pool or
spa.
Power input
Turn off power at circuit breaker before wiring. Remove the internal panel to expose the wiring
connections. Either 115VAC or 240VAC can be used. Refer to the input wiring diagram (Figure 1)
on next page.
WARNING: Applying 240VAC to the 120VAC input terminals will cause
permanent damage to the control.
Grounding
Refer to NEC and local codes for specific grounding requirements. In general, a separate ground
conductor must be run to the ground terminal on the pool service panel.
Low Voltage (LV) output: Solar Valve
The GL-235-LV and GL-235-LV-HV control a single valve. In most applications this is the solar
valve, which diverts water through the collector panels or through the normal pool loop depending
on conditions.
Description
The GL-235-LV and GL-235-LV-HV are differential temperature controls for solar heating of pools,
spas, and hot tubs. These models provide differential temperature control with an adjustable,
calibrated water temperature high limit. Automatic nocturnal cooling (for pools that overheat in
hot climates) and recirculate freeze protection functions can be enabled/disabled via internal jumpers.
Input power can be either 115 or 240 VAC. The output controls a 24VAC automatic valve actuator.
For older systems with 12VAC valves, an internal jumper can be moved to select 12 VAC output
operation. The GL-235-LV-HV has one low voltage output for controlling a single valve and a second
high voltage output for controlling a filter pump or booster pump.
Specifications
Power
:
105-130VAC, .5A 50/60Hz.
Or
195-250VAC, .3A 50/60Hz
Output:
Selectable low voltage 24VAC,
20VA, .85A or 12VAC, 20VA,
1.7A
GL-235-LV-HV only:
SPST-NO isolated contact
115VAC 1HP
240VAC 2HP
Sensors:
2 required (thermistor,
10Kohm @ 25C/77ºF).
Differential
: on at 4ºF, off at 1.5ºF
Desired
P o o l
Temp.:
70-104ºF calibrated scale or
Solar Off, 75-104ºF on
some models
Recirculate
freeze
:
On at <40ºF, off at > 42ºF
Enabled via jumper
Nocturnal
cooling:
On when collector 8ºF less than
pool and pool hotter than limit,
off when collector 3ºF less than
pool or pool cooler than high
limit. Enabled via jumper
2
Содержание GL-235-LV
Страница 9: ...BasicInstallationofGL 235 LV Figure2 7...
Страница 10: ...GL 235 LV HVwithHighVoltageOutputusedforTimerOverride Figure3 8...
Страница 11: ...GL 235 LV HVwithHighVoltageOutputusedforBoosterPump Figure4 9...
Страница 12: ...10 Measuring Voltage of Pool Sensor Use the same method to measure the Solar Sensor Figure5...
