Hayward Aqua Solar Specification sheet

Temperature/Resistance /Voltage
All Hayward controls use a 10K thermistor sensors. When disconnected from the
control, the sensor will read 10K ohms at 25ºC/77ºF. Refer to the chart below for
the resistance at other temperatures. For a given temperature, the resistance
reading should be accurate to ±1%. For a given resistance reading, the tempera-
ture reading should be accurate to ±0.5ºF. All voltage measurements (DC) must
be made with the sensor connected to the control and should be accurate to ± 2%.
°F Ohms
V
olts °F Ohms
V
olts °F Ohms
V
olts °F Ohms
V
olts
1 82,719 4.46 41 25,391 3.59 81 9,076 2.38 121 3,679 1.34
2 80,142 4.45 42 24,704 3.56 82 8,861 2.35 122 3,602 1.32
3 77,656 4.43 43 24,037 3.53 83 8,651 2.32 123 3,527 1.30
4 75,255 4.41 44 23,391 3.50 84 8,447 2.29 124 3,454 1.28
5 72,937 4.40 45 22,764 3.47 85 8,249 2.26 125 3,382 1.26
6 70,698 4.38 46 22,156 3.45 86 8,056 2.23 126 3,312 1.24
7 68,535 4.36 47 21,566 3.42 87 7,867 2.20 127 3,244 1.22
8 66,447 4.35 48 20,993 3.39 88 7,684 2.17 128 3,177 1.21
9 64,428 4.33 49 20,438 3.36 89 7,506 2.14 129 3,112 1.19
10 62,479 4.31 50 19,900 3.33 90 7,333 2.12 130 3,049 1.17
11 60,595 4.29 51 19,377 3.30 91 7,164 2.09 131 2,987 1.15
12 58,774 4.27 52 18,870 3.27 92 6,999 2.06 132 2,926 1.13
13 57,014 4.25 53 18,377 3.24 93 6,839 2.03 133 2,867 1.11
14 55,313 4.23 54 17,899 3.21 94 6,683 2.00 134 2,809 1.10
15 53,669 4.21 55 17,435 3.18 95 6,530 1.98 135 2,752 1.08
16 52,078 4.19 56 16,985 3.15 96 6,382 1.95 136 2,697 1.06
17 50,541 4.17 57 16,548 3.12 97 6,238 1.92 137 2,643 1.05
18 49,054 4.15 58 16,123 3.09 98 6,097 1.89 138 2,591 1.03
19 47,616 4.13 59 15,711 3.06 99 5,960 1.87 139 2,539 1.01
20 46,225 4.11 60 15,310 3.02 100 5,827 1.84 140 2,489 1.00
21 44,879 4.09 61 14,921 2.99 101 5,697 1.81 141 2,440 0.98
22 43,577 4.07 62 14,543 2.96 102 5,570 1.79 142 2,392 0.97
23 42,318 4.04 63 14,176 2.93 103 5,446 1.76 143 2,345 0.95
24 41,099 4.02 64 13,820 2.90 104 5,326 1.74 144 2,299 0.93
25 39,919 4.00 65 13,473 2.87 105 5,208 1.71 145 2,254 0.92
26 38,777 3.97 66 13,136 2.84 106 5,094 1.69 146 2,210 0.90
27 37,671 3.95 67 12,809 2.81 107 4,982 1.66 147 2,167 0.89
28 36,601 3.93 68 12,491 2.78 108 4,873 1.64 148 2,125 0.88
29 35,565 3.90 69 12,182 2.75 109 4,767 1.61 149 2,084 0.86
30 34,561 3.88 70 11,882 2.72 110 4,664 1.59 150 2,044 0.85
31 33,590 3.85 71 11,589 2.68 111 4,563 1.57 151 2,005 0.84
32 32,648 3.83 72 11,305 2.65 112 4,464 1.54 152 1,966 0.82
33 31,737 3.80 73 11,029 2.62 113 4,368 1.52 153 1,929 0.81
34 30,853 3.78 74 10,761 2.59 114 4,274 1.50 154 1,892 0.80
35 29,998 3.75 75 10,500 2.56 115 4,183 1.47 155 1,856 0.78
36 29,169 3.72 76 10,246 2.53 116 4,094 1.45 156 1,821 0.77
37 28,365 3.70 77 9,999 2.50 117 4,007 1.43 157 1,787 0.76
38 27,587 3.67 78 9,758 2.47 118 3,922 1.41 158 1,753 0.75
39 26,832 3.64 79 9,525 2.44 119 3,839 1.39 159 1,720 0.73
40 26,100 3.61 80 9,297 2.41 120 3,758 1.37 160 1,688 0.72
Electronic Solar Control Center
Operation and Installation
Manual
AQ-SOL-LV
AQ-SOL-LV-TC
AQ-SOL-LV-SP
092008F RevG
Copyright © 2010 Hayward Inc. www.haywardnet.com
620 Division St.
Elizabeth, NJ 07207
Aqua Solar

12
IMPORTANT SAFETY INSTRUCTIONS
When using this electrical equipment, basic safety precautions should always be
followed, including the following:
•READ AND FOLLOW ALL INSTRUCTIONS
•Disconnect all AC power during installation.
•Warning – To reduce the risk of injury do not permit children to use this
product unless they are closely supervised at all times.
•A green colored terminal marked “EARTH” is located inside the wiring
compartment. To reduce the risk of electrical shock, this terminal must be
connected to the grounding means provided in the electrical supply
service panel with a continuous copper wire equivalent in size to the
circuit conductors supplying the equipment.
•All field installed metal components such as rails, ladders, drains, or other
similar hardware within 3 meters of the pool, spa or hot tub shall be
bonded to the equipment grounding bus with copper conductors not
smaller than 8 AWG US/ 6 AWG Canada.
SAVE THESE INSTRUCTIONS
5-Year Limited Solar Warranty
This Five Year Limited Warranty statement is only applicable to Solar controls and accessories
sold and installed within the USA and Canada* and supersedes any warranty statements dated
prior to November 1, 2010.
Hayward warrants its Hayward solar products to be free from defects in material or workmanship,
under normal use and service for 5 years from date of manufacture, providing it is installed
according to the installation instructions and specifications. The datecode stamped on the
outside of the product and also coded on the printed circuit board will be the sole determination
of manufacturing date.
To obtain warranty service or repair, please contact the place of purchase or the nearest Hayward
authorized warranty service center. For more information, please contact the Hayward
Technical Service Support Center or visit us on the web at www.haywardnet.com. Hayward will
not assume any of the cost incurred in removal or reinstallation of the product. One year outside
the USA and Canada.
The express warranty above constitutes the entire warranty of Hayward Pool Products with
respect to its solar products and IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED
OR IMPLIED, INCLUDING A WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
IN NO EVENT SHALL HAYWARD BE RESPONSIBLE OR ANY CONSEQUENTIAL OR
INCIDENTAL DAMAGES OF ANY NATURE WHATSOEVER.
No wholesaler, agent, dealer, contractor, or other person is authorized to give any warranty on
behalf of Hayward. This warranty is void if the product has been altered in any way after leaving
the factory.
Charges
Years 1-3:no charge
Years 4-5 60% of current list price plus $5.00 shipping and handling
Unless a copy of the original purchase invoice is enclosed, the manufacturing datecode on the
product will be used to determine the repair charges. Hayward reserves the right to charge a
nominal fee to cover inspection, test, and return freight for all controls where no faults or
problems are detected. All charges will be COD (COD charge will be included) unless you already
have an open account in good standing with Hayward. If the product returned can not be
repaired, Hayward will offer and equivalent credit towards the purchase of any new Hayward
product. Products that exhibit evidence of abuse, misuse, field damage (water/fire damage, line
voltage applied to low voltage terminals, missing parts, etc.) or installed for more than the
warranty period are not eligible for warranty repair replacement.

11
On continuously indicates a probable open circuit in the "POOL" sensor or wiring.
Flashing indicates a probable short circuit in the "POOL" sensor or wiring. In either
case digital pool temperature display will show as "PErr". The solar heating and
cooling functions will remain off until this problem is fixed, however, the recirculate
freeze protection (if enabled by the jumper) will still operate properly. Use the chart on
the back cover to check the "POOL" sensor with a voltmeter (you don't need to
disconnect the sensor). Alternatively, you can disconnect the sensor and measure
the sensor resistance. Replace the sensor or fix the wiring as required. If the sensor
and wiring are both good, then the main circuit PCB may have a problem.
7. "Solar Sensor" LED on or flashing
"Err" on the solar temperature display:
On continuously indicates a probable open circuit in the "SOLAR" sensor or wiring.
Flashing indicates a probable short circuit in the "SOLAR" sensor or wiring. In either
case digital pool temperature display for the "SOLAR" sensor will show as "CErr".
The solar heating and cooling functions will remain off until this problem is fixed,
however, the recirculate freeze protection (if enabled by the jumper) will still operate
properly.
Use the chart on the back cover to check the "SOLAR" sensor with a voltmeter (you
don't need to disconnect the sensor). Alternatively, you can disconnect the sensor and
measure the sensor resistance. Replace the sensor or fix the wiring as required. If the
sensor and wiring are both good, then the main circuit PCB may have a problem.
8. "Aux Sensor" LED flashing
"Err" on the Aux temperature display:
Flashing indicates a probable short circuit in the "AUX" sensor or wiring. The digital
pool temperature display for the "AUX" sensor will show as "AErr". This error
indication only occurs when the "AUX" sensor is being used for recirculate freeze
protection. When the Aux sensor is shorted, the Aqua Solar will use the "SOLAR"
sensor as a backup freeze sensor and turn the recirculate freeze protection on when
the temperature is less than 60ºF.
Use the chart on the back cover to check the "AUX" sensor with a voltmeter (you
don't need to disconnect the sensor). Alternatively, you can disconnect the sensor and
measure the sensor resistance. Replace the sensor or fix the wiring as required. If the
sensor and wiring are both good, then the main circuit PCB may have a problem.
Table of Contents
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SpecificationsSpecifications
SpecificationsSpecifications
Specifications ......................................................................1
OPERATIONOPERATION
OPERATIONOPERATION
OPERATION
ControlsControls
ControlsControls
Controls ...............................................................................2
Temperature DisplayTemperature Display
Temperature DisplayTemperature Display
Temperature Display ........................................................3
INSTALLATIONINSTALLATION
INSTALLATIONINSTALLATION
INSTALLATION
MountingMounting
MountingMounting
Mounting ..............................................................................4
WiringWiring
WiringWiring
Wiring ..................................................................................4
Jumper SettingsJumper Settings
Jumper SettingsJumper Settings
Jumper Settings ..................................................................9
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TroubleshootingTroubleshooting
TroubleshootingTroubleshooting
Troubleshooting ...............................................................10
WARRANTYWARRANTY
WARRANTYWARRANTY
WARRANTY
WarrantyWarranty
WarrantyWarranty
Warranty.............................................................................12

10
1
Aqua Solar Digital Solar Control System
The Aqua Solar Digital Solar Control System is a differential temperature control for
solar heating of pools, spas, and hot tubs. The Aqua Solar is available in 3 models;
AQ-SOL-LV,AQ-SOL-LV-TC andAQ-SOL-LV-SP. These models provide differential
temperature control with an adjustable calibrated water temperature high limit. Both
offer a built-in digital display for solar, water, and ambient temperature information as
well as programmable set point temperature. Automatic nocturnal cooling (for pools
that overheat in hot climates) and recirculate freeze protection functions can be en-
abled/disabled via internal jumpers. The AQ-SOL-LV-TC additionally provides a filter
pump time clock, programmable in 15-minute intervals with multiple ON/OFF times.
The AQ-SOL-LV-SP model provides a solar priority function—one of the optional
high voltage relays can be used to remove power from the conventional heater when-
ever solar heating is available. This maximizes the heat contribution from solar. Front
panel indicator LED’s also provide immediate feedback of system state such as heat-
ing, cooling, and sensor fault.
Specifications
Power: 105-130VAC, .5A 50/60Hz. or
195-250VAC, .3A 50/60Hz
Valve Output: 24VAC, 20VA, .85A max.
Industry standard 3 pin connector
Relay Outputs: DPST isolated contacts; 3HP@240V, 1.5HP@120V, booster pump,
pool sweep interlock, or filter pump; 1 relay supplied with AQ-
SOL-LV-TC, maximum of 2; order relays separately (part no.AQ-
RELAY); relays are industry standard
Sensors: 2 required for "SOLAR" and "POOL" temperatures; 3rd sensor
("AUX") is optional—for display and/or recirculate freeze
protection; (all sensors are thermistor type, 10K@25ºC/77ºF,
additional freeze snap switches may be wired in series with the
"AUX" sensor when used for recirculate freeze protection)
Field Selectable options
C/F Temperature display in Celsius or Fahrenheit (factory default)
Cooling Enables or disables (factory default) operation to cool the pool
Recirc. Frz. Enables or disables (factory default) recirculate freeze protection
Solar Override Enables or disables (factory default) override of the filter pump
relay when solar heat is available.
Control Logic
Heat diff.: 4ºF on, 1.5ºF off
High Limit: 70-104ºF calibrated scale
Recirc. freeze: On when AUX sensor less than or equal to 34ºF
Off when AUX sensor greater than or equal to 36ºF
Cool diff.: -8ºF on, -3ºF off
Troubleshooting
1. "Power" LED off:
Check main power circuit breakers. Check to see if theAqua Solar power is connected
to the LOAD side of the filter pump timer, in which case the Aqua Solar will only be on
when the filter pump is on. Lastly, check the internal fuse which is located on the right
upper side of the main circuit board. If necessary, replace the fuse with a type 3AG, 2
amp, slo-blo fuse, which is available in most electrical or electronics stores.
2. "Heating" LED is always on:
Check that the switch is in the “AUTO” position. Check the sensor temperatures:
The "Heating" LED should go off if the pool temperature is less than the "Desired
Temperature" OR if the solar temperature is less than the pool temperature. If the
sensors appear to giving incorrect readings, check the sensors using the temperature/
resistance/voltage chart on the back cover.
3. "Heating" LED never comes on:
Verify that the switch is in the “AUTO” position. Check the sensor temperatures: The
"Heating" LED should turn on when the pool temperature is less than the "Desired
Temperature" AND the solar temperature is warmer than the pool temperature. The
exception is when solar override is being used (typically when the pool is filtered at
night, but the solar override function is used to turn the filter pump on during the day
when solar heat is available): In this case, there is a 2 hour minimum off time to prevent
rapid on/off cycling of the filter pump. If the sensors appear to giving incorrect
readings, check the sensors using the temperature/resistance/voltage chart on the
back cover.
4. "Heating" and "Cooling" LEDs on simultaneously
This indicates that the main switch is in the "ON" position. The Aqua Solar will
operate the solar valve and the booster pump (if installed) regardless of the sensor
temperatures. Set the switch back to "AUTO" to resume normal operation.
5. "Heating" and "Cooling" LEDs flashing simultaneously
This indicates that recirculate freeze protection is active (solar valve on, boost pump
on (if used), and filter pump on) due to the "AUX" sensor being less than 35ºF OR the
"AUX" sensor being disconnected OR any freeze snap switches wired in series with
the "AUX" sensor being open. If the "AUX" sensor is not connected OR a freeze
snap switch is open, the "AUX" temperature display will be " LO ". The Aqua Solar
will continue this operating mode until the "AUX" sensor rises above 35ºF AND all
freeze snap switches wired in series with the "AUX" sensor are closed. This function
operates regardless of the position of the "ON / AUTO / OFF" switch.
6. "Pool Sensor" LED on or flashing
"Err" on the pool temperature display:

OPERATION
The Aqua Solar is a fully automatic solar heating control which requires minimal set
up or adjustment under normal operating conditions. Typically the following is re-
quired:
1. Set the main switch to AUTO
2. Set the “Desired Temperature” knob to the desired temperature for the pool
3. Set the time clock for the correct time, the desired hours of filtration, and
“auto” operation (model AQ-SOL-LV-TC only)
The “Heating” LED will show when the pool is being solar heated. If your pool has
a pool sweep, the Aqua Solar will turn it off for approximately 6 minutes when solar
heat is turned on. This will allow air to be purged from the system.
Controls and Displays
MAIN SWITCH
ON: The Aqua Solar directs water through the solar collectors regardless of
desired temperature setting. Both the “Heating” and “Cooling” LED’s will be
on. For model AQ-SOL-LV-TC, this also turns on the filter pump.
AUTO: For normal operation. In this position, the Aqua Solar will operate
automatically based on the solar and pool temperatures.
OFF: The Aqua Solar ceases solar heating or cooling (if enabled). Recircu-
late freeze protection (if enabled) will still operate normally. This switch does
NOT remove power from the unit--to service the equipment, disconnect power
at the main circuit breaker.
DESIRED TEMPERATURE
Set the desired pool temperature. The digital display will show the exact tempera-
ture while rotating the Desired Temperature knob. The display reverts back to the
default pool temperature display a few seconds later.
TIMECLOCK (model AQ-SOL-LV-TC only)
The time clock controls the hours of operation for the filter pump. The pump can
be programmed in 15-minute intervals with multiple on/off periods per day. Per the
Association of Pool and Spa Professionals (APSP) standards, the pump should run
long enough each day to filter all of the water in the pool each day.
Set the Aqua Solar timeclock to the correct time by rotating the clock dial in a
clockwise direction. The internal “hands” show time at a glance and the arrow
(approximately 2 o’clock on dial) point indicates AM/PM. Set the pump on/off time
using the series of small slide "trippers" located around the outside of the
timeclock. Each tripper controls a 15-minute interval.
OFF - Push trippers IN (toward center)
ON - Pull trippers OUT (away from center)
2
9
Jumper Settings
The jumpers that enable/disable optional control features are located on the right side
of the main circuit board (see page 4). The factory default for all functions is "dis-
abled" (each jumper will be on a single pin). To "enable" a function, simply take the
designated jumper and place it over both pins.
COOLING: A high voltage relay for filter pump control is usually required to imple-
ment this function. If Cooling is enabled, the Aqua Solar will cool the pool by turning
on the filter pump and diverting the flow through the collector array whenever the
"POOL" temperature is WARMER than the “Desired Temperature” setting AND the
"SOLAR" sensor is COOLER than the pool water.
RECIRCULATE FREEZE PROTECTION: A high voltage relay connected to
the "FILTER PUMP" output and the AUX temperature sensor are required to imple-
ment this function. If enabled, the Aqua Solar will turn the filter pump on and operate
the solar diverter valve whenever freezing conditions are detected (AUX sensor be-
low 35ºF). See diagram on page 6 for typical relay wiring. When recirculate freeze
protection is enabled and the Aqua Solar senses a freeze condition at the AUX sensor,
it will circulate the pool water continuously through the entire filtration plumbing
loop including the solar collector panels. While this type of freeze protection is
usually adequate in relatively mild climates, it is extremely important that the AUX
sensor be properly placed and that the homeowner realize that the system is unpro-
tected in the event of a power failure. Hayward highly recommends that one or more
“freeze snap switches” (model GC-3) be placed in areas with susceptible plumbing
(example: areas that may be shaded, or get more wind exposure) and that these sen-
sors be wired in series with the AUX sensor. Recirculate freeze protection is NOT
recommended in climates where freezing temperatures are common or last for
extended periods.
WARNING--If recirculate freeze protection is NOT selected, then you are rely-
ing on the collectors naturally draining to provide freeze protection. It is very
important that you use a non-positive seal valve or drill a hole in the diverter of
a positive seal valve to allow the collectors to drain. This will NOT work if the
collectors are located below the water level of the pool.
CELSIUS DISPLAY: This will change the temperature display to degrees--Celsius.
The factory default is degrees--Fahrenheit.
SOLAR OVERRIDE: Ahigh voltage relay connected to the "FILTER PUMP" output
is required to implement this function. When "Solar Override" is enabled, the Aqua
Solar will override the filter pump timeclock (external timeclock for AQ-SOL-LV or
internal timeclock for AQ-SOL-LV-TC) and turn the filter pump on whenever there is a
call for solar heating or cooling. During periods of on/off cloudy days this may result
in the pump turning on and off multiple times. It is also possible that the pump could
turn on during hot night conditions. To prevent rapid on/off cycling of the filter pump
during cloudy conditions, the pump will also remain on for a minimum of 10 minutes,
and will remain off for a minimum of 2 hours.

8
3
TIME CLOCK -- MANUAL CONTROL
The manual control can override the timer and is located at approximately the 4
o’clock position.
“1” (up) - pump ON
“ ” (center) - timer controls pump
“0” (down) - pump OFF
NOTE: If the solar override function is enabled, then the Aqua Solar may keep the
filter pump running even though the time clock is “off”
TEMPERATURE DISPLAY
The temperature display normally displays the pool temperature. Push the small but-
ton next to the display to cycle through the various displays. If a temperature sensor
is not wired to the Aqua Solar, or the sensor is not functioning properly, the error
message "Err" will be displayed for that sensor. If the button is not pushed for 30
seconds, the display will automatically revert back to pool temperature. The ex-
ample below shows a typical display:
Normal, default display indicates Pool temperature:
1st button push will show Solar Collector temperature:
2nd button push will show Aux temperature (if used):
3rd button push will show "Desired Temperature":
4th button push will show software revision number:
5th button push will loop back to show Pool temperature.
LED INDICATORS
Power: Input power is applied to the Aqua Solar.
Heating: Solar heating is active. If both Heating and Cooling are on, the
switch is in the ON position.
Cooling: Nocturnal Cooling is active. If both Heating and Cooling are
on, the switch is in the ON position.
Sweep Interlock: The pool sweep is turned OFF for approximately 6 minutes to
allow air to purge from the system.
Pool Sensor: A problem is detected with the pool sensor (open or short
circuit).
Solar Sensor: A problem is detected with solar sensor (open or short circuit).
Aux Sensor: A problem is detected with the AUX sensor (short circuit, only
when used for recirculate freeze protection).
AQ-SOL-LV-TC: The Aqua Solar will automatically ensure that the filter pump is
running before turning on the boost pump. See wiring diagram on page 7.
SWEEP INTERLOCK: The relay is wired in series with the pool sweep and turns the
pool sweep off for approximately 6 minutes whenever the solar turns on. This pre-
vents the pool sweep pump from losing prime while air is being purged from the solar
collector array. For model, AQ-SOL-LV-TC the relay will also turn the pool sweep off
whenever the filter pump is turned off. See wiring diagrams on page 6 (top) and on
page 7 (bottom) for typical wiring.
FILTER PUMP: The function of this relay varies with the model of theAqua Solar. If
the "Solar Override" is enabled (see "Jumper Settings"), the Aqua Solar will override
the time clock and turn the filter pump on when there is a call for solar heating. If
"Recirculate Freeze" protection is enabled, the Aqua Solar will turn the pump and
solar valve on during freezing conditions.
AQ-SOL-LV: This relay should be wired in parallel with the filter pump timeclock
contacts as shown on page 6. Be careful to make sure the phases do not get reversed.
AQ-SOL-LV-TC: This relay is the primary control for the filter pump—there is no
other timer. The Aqua Solar will operate the filter pump according to the "trippers" set
on the built-in timeclock in addition to the optional "Solar Override" and "Recirculate
Freeze" options.
Booster Pump
Pool Sweep
Filter Pump
120 or 240
VAC
240
VAC
Aqua Solar
(AQ-SOL-LV-SP)
AQ-SOL-LV-S
P
HEATER INTERLOCK FUNCTION
NOTES:
1) Do not use Aqua Solar terminal block as a junction for pump wiring.
2) Most codes require that each pump be on a separate circuit.
Ground
240 VAC
On when solar off
Off when solar on
()
HEATER
NOTE:
Connect heater interlock
relay to“Pool Sweep”

4
INSTALLATION
Mounting
The Aqua Solar is designed for outdoor use. Mount the enclosure vertically with the
knockouts facing downward. For safety, the Aqua Solar must be a minimum of 5 feet
(horizontally) from the pool or spa.
Power input
Turn off power at circuit breaker before wiring. Follow NEC and all local electrical
codes. Wire to either 120VAC or 240VAC per the diagram below. If the Aqua Solar
is being powered from the same circuit as one of the pumps, wire to the relay first and
then jumper over the Aqua Solar terminal block. Do NOT use the Aqua Solar termi-
nal block as a junction for pump power, the terminal block is not rated for high amps.
Be sure to connect the earth ground to the green terminal.
Output wiring to solar diverter valve
Most installations use a solar valve, which diverts water through the collector panels
when solar heat is available. For Hayward, Jandy, and Compool valve actuators (with
wire end connectors), two 3-pin connectors are supplied. Plug the actuator into one
of the Aqua Solar's two 3-pin connectors (see diagram above for location of connec-
tors). If the valve operates opposite to the way it is supposed to, disconnect and plug
into the other connector.
7
Booster Pump
Pool Sweep
Filter Pump
240
VAC
240
VAC
Filter
Pump
Solar
Booster
Pump
Aqua Solar
(AQ-SOL-LV-TC)
AQ-SOL-LV-TC
with filter pump & booster pump relays
NOTES:
1) Do not use Aqua Solar terminal block as a junction for pump wiring.
2) Most codes require that each pump be on a separate circuit.
Ground
240 VAC
120VAC
Booster Pump
Pool Sweep
Rev
Valve
Output
Relay
Control
Outputs
Input
Power
Temperature
Sensor
Inputs
Fuse (2A, Slo-Blo)
Aux
Filter Pump
Fwd
Pool
Solar
240 VAC
Ground
}
Cooling
Recirculate/
Freeze Protection
Celsius/
Fahrenheit
Solar
Override
(heater interlock for -SP model)
Booster Pump
Pool Sweep
Filter Pump
240
VAC
Filter
Pump
Sweep
Pump
Aqua Solar
(AQ-SOL-LV-TC)
AQ-SOL-LV-TC
with filter pump & pool sweep rela
y
s
NOTES:
1) Do not use Aqua Solar terminal block as a junction for pump wiring.
2) Most codes require that each pump be on a separate circuit.
3) Aqua Solar will ensure sweep pump runs only when filter pump is running.
4) Sweep pump will turn off for approximately 5 minutes when solar turns on.
Ground
240 VAC
Pool Sweep
Timer
120/240
VAC

6
Sensor Mounting and Wiring
Most installations use a Hayward "PC" type sensor for both the "SOLAR" sensor
and the "POOL" sensor. If optional recirculate freeze protection will be enabled,
an additional "AUX" sensor is required (see description of this function on page
9). Otherwise, an "AUX" sensor can used to display the ambient air temperature or
not used at all.
Solar Sensor:
Use a screw or silicone adhesive to attach the solar sensor near the solar collector
array. The sensor does not have to be attached to the collectors. It is only important
that the sensor be exposed to the same sunlight as the collectors. Additionally, the
underside of the sensing element may be covered with silicon to minimize wind
cooling.
Pool Sensor:
The pool sensor should be mounted in the filtration plumbing after the filter, but
before any conventionally fueled heaters. If a PC sensor is used, drill a 3/8" (10mm)
hole in the PVC pipe. Remove burrs around the hole. Insert the PC sensor until the
O-ring collar sits flush on the hole. Position the hose clamp over the sensor and
gently tighten until the O-ring makes an adequate seal. DO NOT OVERTIGHTEN.
Optional Aux Sensor:
This sensor should be mounted in a location that will accurately reflect the outdoor
ambient air temperature (not in direct sunlight, away from heat or cooling sources,
etc.).
Other 10K ohm Hayward sensors may be substituted. Wire should be twisted pair
20AWG. Sensor wiring run outdoors must be rated for outdoor use and ensure that
the wire connectors are protected from the weather. For long runs or runs near other
electrical wiring use shielded cable (Belden 8428 for outdoor use). Ground the
shields to the Aqua Solar's ground screw.
High Voltage Relay Output Wiring
A maximum of two high voltage relays (industry standard) may be added to the AQ-
SOL-LV. TheAQ-SOL-LV-TC model comes with one relay for the filter pump control
already installed and one additional relay may be added. Order additional relays
separately (Hayward p/n AQ-RELAY). The relays are industry standard and are
double pole, single throw meaning that they can make/break both legs of a 240VAC
circuit. Screw the relays into the mounting bracket and connect the coil to the
proper connector for these desired functions:
BOOST: This relay controls a booster pump for systems where the main filter pump
does not have enough power to pump water through the collector array. The boost
pump turns on 30 seconds after solar heating/cooling turns on.
AQ-SOL-LV: For most systems, simply connect the Aqua Solar power to the LOAD
side of the filter pump timer. If the Aqua Solar is connected to LINE power (typically
when "Recirculate Freeze" or "Solar Override" features are also being used), then
the input power to the boost pump relay should be connected to the LOAD side of
the filter pump timer. See wiring diagram on page 6 (bottom).
5
Booster Pump
Pool Sweep
Filter Pump
Ground
Pool Sweep
Timer
Contactor
(240 VAC Coil)
120/240
VAC
240
VAC
Filter Pump
Timer
Pool Filter
Pump
Pool Sweep
Pump
A
qua Solar
(AQ-SOL-LV)
AQ-SOL-LV
with Solar Override & Pool Sweep Interlock
Be careful not to cross phases
on filter pump wiring
240 VAC
Booster Pump
Pool Sweep
Filter Pump
Ground
240
VAC
Filter Pump
Timer
Pool Filter
Pump
Boos
t
Pump
Aqua Solar
(AQ-SOL-LV)
AQ-SOL-LV
with Solar Override & Boost Pump
Be careful not to cross phases
on filter pump wiring
240 VAC
Boost relay power
connected to LOAD
side of Filter Pump
Timer to ensure that
boost pump only runs
when filter pump is
runnning