Zodiac Clearwater Duo User manual

eXO® | Clearwater Duo™
(all models) (all models)
H0633500_REVB
INSTALLATION MANUAL
FOR YOUR SAFETY - This product must be installed and serviced by a licensed electrician in
accordance with the latest enforced version of AS/NZ 3000 and any other applicable local installation
codes. Before installing this product, read and follow all warning notices and instructions that
accompany this product. Failure to follow warning notices and instructions may result in property
damage, personal injury, or death. Improper installation and/or operation will void the warranty.
Improper installation and/or operation can create unwanted electrical hazard which can cause serious
injury, property damage, or death.
WARNING

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Page 2 Clearwater Duo™, eXO®| Installation Manual
Refer to the following websites for information on warranty and service in your country:
•  Australia,NZ,AsiaandSthPacicgotowww.zodiac.com.au
• South Africa go to www.zodiac.co.za
DATE OF INSTALLATION
INSTALLER INFORMATION
INITIAL PRESSURE GAUGE READING (WITH CLEAN FILTER)
PUMP MODEL HORSEPOWER
FILTER MODEL
CONTROL PANEL MODEL SERIAL NUMBER
NOTES:
EQUIPMENT INFORMATION RECORD

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Table of Contents
Section 1. Important Safety Instructions....... 4
Section 2. System Overview ........................... 6
2.1 Contents........................................................................6
2.2 Specifications ................................................................6
2.3 Dimensions....................................................................7
2.4 Materials and Tools .......................................................7
Section 3. Plumbing......................................... 8
Section 4. Install Controller ............................ 9
4.1 Mount the Bracket .........................................................9
4.2 Install temperature sensor.............................................9
4.3 Electrical Connections...................................................9
Section 5. Install the pH Link or Dual Link
Module on the Controller ............ 11
5.1 Install the POD Kit....................................................... 11
5.2 Drill the Pipe................................................................ 11
5.3 Install the POD ............................................................ 11
5.4 Install the POD Cap.....................................................12
5.5 Install and Calibrate
the Sensor(s)...............................................................12
5.6 Install the pH Down Intake and Injection lines.............13
5.7 Calibration Procedure..................................................14
Section 6. Prepare and Balance the Pool .... 15
6.1 pH Regulation Principle...............................................15
6.2 Water Chemistry Table ................................................15
6.3 Stabilizer (Cyanuric Acid) ............................................ 15
Section 7. Operation...................................... 16
7.1 User Interface Overview..............................................16
7.2 Initial start-Up ..............................................................16
Section 8. Installing and
Assigning Equipment.................. 18
8.1 Filter Pump..................................................................18
8.2 Aux/Lights....................................................................19
8.3 Heating........................................................................21
Section 9. Calibration and Priming .............. 22
9.1 pH Sensor Calibration .................................................22
9.2 ORP Sensor Calibration .............................................22
9.3 Setpoint(s)...................................................................22
9.4 Prime and Test the pH Dosing Pump ..........................23
9.5 Programming/Timers................................................... 23
9.6 Reversing ....................................................................25
9.7 Slave Mode .................................................................25
Section 10. Pairing and
Connecting to Wi-Fi..................... 26
10.1 Wi-Fi Direct Mode........................................................26
10.2 Invitation Code ............................................................26
10.3 Frequently Asked Wi-Fi Connection Questions (FAQs)26
Section 11. Help Menu..................................... 27
Section 12. Inspecting and
Cleaning the Electrode................ 28
Section 13. Winterizing.................................... 28
13.1 Winterize the pH/ORP Sensors...................................28
13.2 Reopening the Pool.....................................................28
Section 14. Troubleshooting........................... 29

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Section 1. Important Safety Instructions
READ AND FOLLOW ALL INSTRUCTIONS
All electrical work must be performed by a licensed electrician and conform to all national, state, and local
codes. When installing and using this electrical equipment, basic safety precautions should always be
followed, including the following:
WARNING
Prolonged immersion in hot water may induce hyperthermia. Hyperthermia occurs when the internal temperature
of the body reaches a level several degrees above the normal body temperature of 37°C. The symptoms of
hyperthermia include dizziness, fainting, drowsiness, lethargy, and an increase in the internal temperature of the
body. The effects of hyperthermia include: 1) unawareness of impending danger; 2) failure to perceive heat; 3)
failure to recognize the need to exit spa; 4) physical inability to exit spa; 5) fetal damage in pregnant women; 6)
unconsciousness resulting in a danger of drowning.
DANGER
To reduce the risk of severe injury or death, do not remove the suction fittings of your spa or hot tub. Never operate
a spa or hot tub if the suction fittings are broken or missing. Never replace a suction fitting with one rated less than
the flow rate marked on the equipment assembly.
WARNING
To Reduce the Risk of Injury -
a) The water in a spa should never exceed 40°C. Water temperatures should remain between 38°C and 40°C.
The water in a spa should never exceed 40°C. Water temperatures between 38°C and 40°C are considered
safe for a healthy adult. Lower water temperatures are recommended for young children and when spa use
exceeds 10 minutes.
b) Since excessive water temperatures have a high potential for causing fetal damage during the early months of
pregnancy, pregnant or possibly pregnant women should limit spa water temperatures to 38°C. Before entering
a spa or hot tub, the user should measure the water temperature with an accurate thermometer since the
tolerance of water temperature-regulating devices varies.
d) The use of alcohol, drugs, or medication before or during spa or hot tub use may lead to unconsciousness with
the possibility of drowning.
e) Obese persons and persons with a history of heart disease, low or high blood pressure, circulatory system
problems, or diabetes should consult a physician before using a spa.
f) Persons using medication should consult a physician before using a spa or hot tub since some medication
may induce drowsiness while other medication may affect heart rate, blood pressure, and circulation.
WARNING
Risk of electric shock - Install the controller at least 3.5 metres from the inside wall of the pool and/or hot tub
using non-metallic plumbing.
Children should not use spas or hot tubs without adult supervision.
Do not use spas or hot tubs unless all suction guards are installed to prevent body and hair entrapment.
People using medications and/or having an adverse medical history should consult a physician before using a spa
or hot tub.
WARNING
To avoid injury ensure that you use this control system to control only packaged pool/spa heaters which have built-
in operating and high limit controls to limit water temperature for pool/spa applications. This device should not be
relied upon as a safety limit control.

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SAVE THESE INSTRUCTIONS
WARNING
People with infectious diseases should not use a spa or hot tub.
To avoid injury, exercise care when entering or exiting the spa or hot tub.
Do not use drugs or alcohol before or during the use of a spa or hot tub to avoid unconsciousness and possible
drowning.
Before entering a spa or hot tub, measure the water temperature with an accurate thermometer.
Do not use a spa or hot tub immediately following strenuous exercise.
Prolonged immersion in a spa or hot tub may be injurious to your health.
Do not permit any electric appliance (such as a light, telephone, radio, or television) within 3.5 metres of a spa or
hot tub.
The use of alcohol, drugs or medication can greatly increase the risk of fatal hyperthermia in hot tubs and spas.
Water temperature in excess of 38°C may be hazardous to your health.
Attention Installer: Install to provide drainage of compartment for electrical components.
WARNING
A terminal bar marked "GROUND" is provided within the controller. To reduce the risk of electrical shock which can
cause serious injury or death, connect this terminal bar to the grounding terminal of your electric service or supply
panel with a continuous copper conductor having green insulation and one that is equivalent in size to the circuit
conductors supplying this equipment in accordance with AS/NZ 3000 - 2007. In addition, where required, bonding
should be extended in accordance with AS/NZ 3000 - 2007 to any metal ladders, water pipes, or other metal within
3.5 m of the pool/spa.

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Section 2. System Overview
2.1 Contents
Before starting, check that you have the correct
parts as indicated in Table 1. If any parts are
missing or incorrect, please call your local distributor
or technical support at 1300 763 021 for assistance.
2.1.2 Water Care Module Contents
pH Link, Dual Link
a. Module (pH Link or Dual Link)
b. POD Housing Upper
c. POD Housing Lower
d. 40 mm Pipe Adapter
e. POD Cap
f. Cap Plug (X2)
g. pH Injector Valve
h. Hole Saw and Hex Key
i. Compression Fitting
j. Ceramic Weight
k. 6 mm Tube (5 m)
l. Acid Cap, 5 L
m. Acid Cap, 15/20 L
n. Locking Collar
o. Locking Collar Tool
p. pH Sensor
q. ORP Sensor*
r. Sensor Holder (X2*)
*Items only included with eXO®- Pro iQ
pH Buffer Solutions: pH 7 (X6), pH 4 (X6) - (not shown)
ORP 470 mV Buffer Solution (X6) - (not shown)
Table 2. Water Care Module System Contents
2.1.1 Salt Chlorinator System
Clearwater, eXO®, Hydroxinator (all models)
a. Controller
b. Temperature Sensor*
c. Wall Mount Bracket
d. Wall Mount Screws Ø7 mm (X2)
e. Wall Mount Anchor (X2)
f. Electrolytic Cell
g. Unions (X2)
h. Glue on Adapter (X2)
i. Adapter O-Rings (X2)
j. Pipe Reducer - White (X2)
k. Zip Ties (X7) - (not shown)
*Items not included with all models.
Table 1. Salt Chlorinator System Contents
2.2 Specifications
2.2.1 Salt Chlorinator System
Compact Mid Large
Nominal chlorine production 18 g/h 25 g/h 35 g/h
Nominal output amps 3.6 A 5.0 A 7.2 A
Required salt level 4000ppm
Power supply voltage 240 VAC - 50 Hz
Electric power 200 W
Protection index IP43
Flow through the cell Min. 80 Lpm
Max pressure in the cell 2.75 bar
Operating water temperature 10°C - 40°C
Table 3. Salt Chlorinator System Specifications
2.2.2 Water Care Module
Power Supply Extra low voltage
(connected to controller)
Peristaltic pump flow rate 1.2 L/h
Maximum back pressure (injection) 1.5 bar
pH correct Acidic pH only
(sulfuric/hydrochloric acid)
pH sensor calibration 1 or 2 point (pH 4 and pH 7)
Sensor Cable Length 3 Meters
ORP sensor calibration* 1 point (470 mV)
*Applicable only to eXO® - Pro iQ
Table 4. Water Care Module Specifications
NOTE: Water care
modules are optional
accessories and will
not be included with
all models.

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2.3 Dimensions
2.3.1 Controller
31.5 cm 9.6 cm
36.4 cm
Figure 1. Controller Dimensions
2.3.2 Cell
32 cm
11.5 cm
21.5 cm
11 cm
21.5 cm
15.5 cm
Figure 2. Electrolytic Cell Dimensions
2.4 Materials and Tools
2.4.1 Controller
Tools Needed for Installation
• Power Drill
• 7 mm Drill Bit - Hammer Drill Bit
(only necessary to drill into brick or concrete)
• Pencil or Marking Pen
• Flat Head Screwdriver
• Pozidiv Screwdriver
• Small Flathead or Slotted Screwdriver
2.4.2 Cell
Tools Needed for Installation
• PVC Cutter
• PVC Cement
• Pencil or Marking Pen
• Check Valve
• 40 mm or 50 mm PVC pipe
2.4.3 pH ORP POD
Tools Needed for Installation
• Power Drill
• Pencil or Marking Pen
• Flat Head Screwdriver
• Phillips Head Screwdriver
• Small Flathead or Slotted Screwdriver

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Section 3. Plumbing
The cell must be plumbed in a position that is
accessible for maintenance and within 2 meters of
the controller. The cell should be the last piece of
equipment in the circulation system. The cell must
be installed horizontally, levelandwithcorrectow
orientation, see Figure 3 and Figure 4.
1. If you intend to plumb the cell on a bypass,
the bypass must be equipped with Isolation
valves, see Figure 3 and Figure 4.
2. Plumb the cell inlet and outlet on vertical
lengths of 40 mm or 50 mm PVC pipe. The
cell inlet and outlet ports are 11.5 cm apart,
see Figure 2. The inlet of the cell is on the side
closest to the electrical lead, see Figure 5.
3. Put the unions onto the inlet and outlet pipes,
see Figure 5.
4. For 50 mm plumbing, glue the adapters
directly onto the pipes.
5. For 40 mm plumbing, glue the reducers into the
adapters then glue the adapters onto the pipes.
6. Ensure the o-rings are seated properly on the
adapters.
7. Secure the cell to the plumbing by
tightening the unions hand tight. DO NOT
OVERTIGHTEN.
8. Double check cell orientation. The cell inlet is
closest to the cell electrical lead.
Figure 3. Plumbing Cell Only
pH Minus
CAUTION: Never store acid directly underneath any
equipment as fumes will cause corrosion and resulting
damage can void your warranty. It is recommended to store
your acid container in a safe, protected well ventilated area.
NOTE: The sensor POD must be positioned after
filtration and heating systems and before the cell.
Figure 4. Plumbing Cell and POD assembly
Figure 5. Cell Plumbing Assembly
WARNING
• The cell must be installed horizontally and level.
Improper installation can lead to gas build up which
could result in equipment damage or serious injury.
• The cell must be the last piece of equipment on
the return line, see Figure 3 and Figure 4.
• It is recommended in all installations that the cell is
installed on a bypass equipped with isolation valves,
see Figure 3 and Figure 4.
• In order to avoid load loss, installing the cell on a
bypass is MANDATORY if system flow rated exceeds
300 Lpm, see Figure 3 and Figure 4.
• If installing on a bypass, use a downstream check
valve instead of a manual valve to prevent improper
back flow into the cell.
Cell
Adapter
Union
Reducer
Plumbing
Adapter
O-ring
CELL INLET

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Section 4. Install Controller
The controller should be located at or near the
equipment pad, at least 3.5 metres or more away
from the inside wall of the pool/spa, 1.5 metres
off the ground, and within 2 meters of the cell. All
national, state, and local codes are applicable.
4.1 Mount the Bracket
1. Determine the controller location.
2. Use the enclosed bracket to mark the
mounting surface through the screw holes.
3. Drill surface with 7 mm bit.
4. Install the included wall anchors.
5. Hang bracket using the included screws.
6. Hang the controller on the wall bracket and
slide to the right to secure in place.
Figure 6. Controller Mount
4.2 Install temperature sensor
The temperature sensor must be installed
upstream from any heating equipment, see Figure 3
and Figure 4. The sensor will need to be placed into
the plumbing system at any suitable position after
the filter pump and before any heating equipment.
1. Drill a Ø9 mm hole in the top of the pipe.
2. Ensure the o-ring is properly seated on the
sensor body.
3. Secure the sensor and o-ring with the screw
clamp provided. DO NOT OVERTIGHTEN.
Figure 7. Install Temperature Sensor
4.3 Electrical Connections
WARNING
FOR YOUR SAFETY: This product must be
serviced by a professional pool/spa service
technician as described on the front cover of this
manual. The procedures in this manual must be
followed exactly. Failure to follow warning notices
and instructions may result in property damage,
serious injury, or death. Improper installation and/or
operation will void the warranty.
The controller must be permanently powered by
connection to a 30 mA residential circuit breaker.
The controller can be used to connect and control
multiple devices see Table 5 for a summary of functions.
4.3.1 Remove Lower Cover
1. Unplug power supply from mains.
2. Remove the external cover.
3. Remove the 2 screws from the lower housing.
4. Remove the lower housing by pulling down
then out see Figure 8.
Figure 8. Remove Controller Lower Cover
Ø9 MM

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4.3.2 Controller Enclosure Wiring
1. Wire low voltage connections on the low
voltage side of the enclosure, see Figure 10.
2. Wire high voltage connections on the high
voltage side of the enclosure, see Figure 10.
3. Use the internal labels (low voltage - yellow, high
voltage - orange) to identify connection points.
4. Use the cable ties provided to secure internal
wiring to the controller frame. See Figure
10 for recommended cable tie locations and
Table 5 for connection point functions.
5. Pass cables through the appropriately labeled
strain relief ports. It may be necessary to
pierce the strain relief grommet prior to
passing the cables through it.
LOW VOLTAGE HIGH VOLTAGE
Figure 10. Controller Wiring
LOW VOLTAGE HIGH VOLTAGE
Figure 9. Controller Connection Ports
NAME TYPE ROUTE FUNCTION
SENS Input - Connection of the pH or pH/ORP sensing PCBA
PUMP Input - Connection of the pH pump for pH Link and Dual Link modules
CELL Output 1 Connection of the electrolysis cell
UI Output - Connection of the user interface
TEMP Input 3 Connection of the water temperature probe
Flow Input 2 Not used in AUS / South Africa
iAL RS485 Input 4 Not used in AUS / South Africa
VSP RS485 Output 5 RS485 variable speed pump connection
DRED Input 6 DRED Funtion (Demand Response Enabled Device) – for Australia only
COVER Input 7 Pool cover contact – lower the chlorine production
(dry contact: cover open = open contact/cover closed = closed contact)
SLAVE Input 8 For use with 3rd party ORP sensor controllers. Do not use with AquaLink or general automation controllers
AUX 2 12-24V Output 9 ON/OFF control of a LOW VOLTAGE external device (12 – 24V) or a heating system
AUX 1 230V Output 10 ON/OFF control of a HIGH VOLTAGE device. - Not available in Australia
PUMP 230V Output 11 230 V Power supply for the filtration pump Maximum 8A
MAINS Input 12 Device power supply 230 VAC – 50Hz
Table 5. Controller Wiring Positions

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Section 5. Install the pH Link or
Dual Link Module on the Controller
NOTE: Water care modules are optional accessories and
will not be included with all models.
If your controller model does not have a Dual-Link or
pH Link module you may skip to Section 6.
The controller must be installed and operational
before you Install the module, refer to Section 4.
pH balance and suitable alkalinity levels in the water
must be maintained. Be sure to prepare and balance
the pool before installing the pH Link or Dual Link
module, for details see Section 6.
1. Turn OFF and disconnect all power to the
controller.
2. Remove the front cover from the controller, see
section 4.3.1 for details.
3. Connect Sens and Pump wires from the Module
to the controller board see section 4.3 for wiring
details.
4. Seat the Module housing on the controller.
5. Fasten two screws to secure the module
to the controller.
6. Replace the external cover.
Figure 11. Dual Link Module Installed
WARNING
In order to avoid risk of serious damage to the equipment and/or
electrocution which could result in serious injury or death, do not
reconnect power supply until all components are installed: (1) pH
Link/Dual Link module, (2) POD kit, and (3) pH down injection pipe.
5.1 Install the POD Kit
1. Turno󰀨anddisconnectallpowertothe
controller.
2. For optimal performance, the POD must be installed:
• On a 30 cm length of rigid 40 mm or 50 mm PVC pipe.
• As far as possible from any angles.
• Horizontally.
• Vertically within 30°.
• Afterthelteringequipment.
• After any heating device but before the electrolytic cell or
other water treatment equipment.
5.2 Drill the Pipe
1. Inspect the POD O-ring to ensure it is in good
condition and properly seated.
2. Press tabs to remove the upper POD housing
from the lower POD housing.
O-ring
Upper Housing
Lower Housing
Figure 12. POD Assembly
3. Remove the 40 mm adapter from the lower
POD housing.
4. Place the 50 mm guide on the top of the pipe.
NOTE: For 40 mm installations use the 40 mm adapter
marked “AUS” as the guide for marking the pipe,
for 50 mm installations use just the bottom of
the POD assembly.
5. Mark the pipe through the holes.
6. Drill holes in the PVC pipe using the hole saw.
Make sure the edges are smooth without burrs.
Hole Saw
40 mm Adapter
Figure 13. Mark and Drill Pipe
5.3 Install the POD
1. For 40 mm pipe installations, insert the
adapter into the holes in lower POD housing.
* with 40 mm pipe
Figure 14. Assemble the POD

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2. Note the arrows on the upper housing
indicatingowdirection.Makesurethepodis
in proper orientation.
Flow Flow
InletOutlet
Figure 15. POD Orientation
3. Assemble the POD around the pipe, the tabs
will click into place.
5.4 Install the POD Cap
1. Place the POD cap on the POD assembly.
The cover and POD assembly are keyed for
proper orientation. Use caution to ensure the
POD O-ring is clean and properly seated.
2. Align the arrow on the POD with the locking ring.
Figure 16. POD Locking Ring Orientation
3. Tighten the locking ring with the locking collar
tool until snug. Do not overtighten.
5.5 Install and Calibrate
the Sensor(s)
1. Install the sensor holder(s) into the correct
port on the POD cap. Remove the cap plug if
necessary.
NOTE: The ORP sensor is with Dual Link module only.
Sensor
Holder
Cap
Plug
Figure 17. Sensor Holder Installation
2. Carefully remove the protective tube
from the sensor.
3. Rinse the end of the sensor with tap water.
Shakeo󰀨excesswater.
4. Carefully screw the sensor(s) into sensor holder.
Figure 18. pH/ORP Sensor Installation
5. Calibrate the sensor(s).
(See Section 5.7. Calibration Procedure)
To maintain accurate and reliable operation, the
sensors must be calibrated before the initial use
of the controller with pH/Dual Link module. After
initial calibration, it is recommended to recalibrate
sensors every few months.
6. Connect the sensor lead(s) to the module
at the base of the controller (pH = blue),
(ORP = yellow).
pH
ORP
Figure 19. pH/ORP Connection Ports

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5.6 Install the pH Down Intake and
Injection lines.
Intake line
(Pump to
pH down)
Injection line
(Pump to POD)
Figure 20. pH- Pump Conguration
The pump rotates in a clockwise direction. Acid is
fed into the left side of the pump (via the Intake
line) and injected into the POD from the right side
(via the Injection line).
CAUTION: For safety reasons, install the Injection line
before the Intake line to ensure pH is not
accidentally dosed into the system before all
connections are made.
Never store acid directly underneath any
equipment as fumes will cause corrosion
and resulting damage can void your
warranty. It is recommended to store your
acid container in a safe, protected well
ventilated area.
ow direction ( pump inlet, Injection)
Figure 21. pH- Pump Ports
5.6.1 Install the Injection Line
1. Remove the protective cover from the pump.
2. Cut a section of the plastic tubing that has
adequate length to reach from the injection valve
at the pump to the non-return valve on the POD.
3. Remove the threaded cap from the pump
outlet (right).
4. Thread tubing through the hole in the cap,
connect the tubing to the nipple on the module
and reattach the threaded cap.
NOTE: Forabettert,softenbothendsofthetubingby
immersing in warm water.
5. Remove the threaded cap from the POD
intake valve.
6. Thread tubing through the hole in the cap,
connect the tubing to the nipple on the POD
and reattach the threaded cap.
5.6.2 Install the pH Down Intake Line
1. Cut a section of the plastic tubing that has
adequate length to reach from the pH down
reservoir to the pump.
2. Remove the threaded cap from
the pump inlet (left side).
3. Pass one end of the tubing through the
threaded cap and attach tubing to the nipple
on the pump inlet.
4. Remove the cap from the pH down container.
5. Select the appropriate size acid cap
(included), either 5 L or 15/20 L.
6. Thread tubing through the hole in the cap
through the ceramic weight.
7. Remove the nut from the blue
compressiontting.
8. Pass the tubing through the nut and attach it
tothenippleonthecompressiontting.
9. Reattach the threaded nut.
10. Put the weighted end of the hose into the pH
down reservoir.
11. Secure the pH down cap tightly on the container.
12. Replace the protective cover on the pump.
Figure 22. pH- Intake Connections

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Page 14 Clearwater Duo™, eXO®| Installation Manual
5.7 Calibration Procedure
To maintain accurate and reliable operation,
the sensors must be calibrated before using the
controller with pH/Dual Link module. After initial
calibration, it is recommended to recalibrate
sensors every few months.
5.7.1 Clean the Sensor(s)
Sensor(s) must be cleaned before calibration,
including prior to initial use after installation.
1. Turno󰀨thelterpump.
2. Close all valves.
3. Remove the sensor and the sensor holder
from the POD.
4. Rinse the sensor with tap water for 1 minute.
Shakeo󰀨excesswater.
NOTE: To avoid damaging the active sensor,
do not rub or dry with a cloth.
5. Brush the junctions and metal strip using a
toothbrush for 1 minute.
Figure 23. Cleaning Probe
6. Prepare a diluted hydrochloric acid solution by
pouring 50 mL tap water into 1 mL (10 drops)
of commercially-available hydrochloric acid
(HCl 37%).
WARNING
• Hydrochloric acid is a hazardous chemical that
may cause burns, lesions, and irritations. Handle
with extreme care using protective equipment
(gloves, goggles, coveralls). Refer to the
substance SDS sheet for more information.
• Always pour acid into water; do NOT pour water
into acid.
• Once cleaning is complete, dispose of the solution
according to the applicable code(s) or standard(s)
in effect in the country of use.
7. Wash the sensor in the diluted hydrochloric
acid solution for 2 minutes.
8. Rinse sensor in clean tap water for 1 minute.
Shakeo󰀨excesswater.
5.7.2 Calibrate the pH Sensor
The pH sensor (blue) can be calibrated in 1 or 2
points. We recommend 2-point calibration for a
more reliable measurement throughout the season.
1. Turn on power to the controller.
2. Turno󰀨thepoolpumpandclosevalvesas
necessary to isolate the cell and sensors.
3. Unscrew the pH sensor from the POD.
4. Rinse the end of the sensor with tap water.
Shakeo󰀨excesswater.Donottouchthe
glass bulb at the end of the pH sensor.
5. Start 1 or 2 point calibration via the controller
User Interface, see Section 8.3 For details.
6. If calibration is unsuccessful, see Section 11.
Troubleshooting.
5.7.3 Calibrate the ORP Sensor
1. Verify power to the controller is on, pump is
o󰀨,andvalvesareclosedisolatingthecell
and sensors.
2. Unscrew the ORP sensor from the POD.
3. Rinse the end of the sensor with tap water.
Shakeo󰀨excesswater.Donottouchtheend
of the ORP sensor.
4. Place the probe in a sample of ORP 470 mV
bu󰀨ersolutionforoneminute.
5. Start calibration via the controller User
Interface, see section 8.4.
6. Once calibration is complete, replace
the sensor on the POD. If calibration is
unsuccessful, see Section 11.

Page 15
Page 14 Clearwater Duo™, eXO®| Installation Manual
Section 6. Prepare and Balance the Pool
6.1 pH Regulation Principle
The amount of chlorine needing to be produced is
dictated by the pH level in the pool. As the pH level
rises, the amount of chlorine must be increased to
compensate, see Table 6.
6.2 Water Chemistry Table
Test and maintain correct water balance throughout the season, according to the table.
Free
Chlorine
pH Total Alkalinity
(ppm)
Calcium Hard-
ness (ppm)
Cyanuric Acid
(ppm)
Salt
Level (ppm)
Metal
Australian
Standard 1 -3 7.2 - 7.8 60 - 200 100 - 400 *** up to 50 4000 - 7000 x
Ideal range 1 - 3 7.4 80 - 140 90 - 300 up to 50 4000 at 27°C < 0.10 ppm
To Increase Add chlorine or
increase equip-
ment output
Addbu󰀨eror
soda ash (so-
dium carbonate)
Add sodium
bicarbonate
Add calcium
chloride
Add cyanuric
acid
Add salt or
minerals ** x
To Decrease Add muriatic
acid
Add muriatic
acid or dry acid
Partially drain
andrellpool*
Partially drain
andrellpool*
Partially drain
andrellpool* x
In Season
Testing
Frequency
Weekly Weekly Weekly Weekly Weekly Monthly x
NOTE: Test all equipment sensors quarterly.
* Fill pool with water from the mains water supply. Do not use rain water or well water.
** Do not add salt directly into the skimmer. Do not initiate electrolysis until salt has fully dissolved.
*** Reading is True Calcium Hardness, not Total Hardness.
Table 7. Water Chemistry
6.3 Stabilizer (Cyanuric Acid)
Chlorine Conentration PPM
ORP Measurement (mV)
+
-
10 min 10 min 10 min 10 min
Dosing Cycles
Time
pH pH evolution
7,30
7,35
7,40
7,45
7,50
7,55
7,60
7,65
7,70
7,75
7,80
7,85
7,90
7,95
8,00
8,05
8,10
8,15
8,20
100%
75%
50%
20%
Factory Set Point = 7,4 pH
Table 6. pH Evolution

Page 17
Page 16 Clearwater Duo™, eXO®| Installation Manual
Section 7. Operation
7.1 User Interface Overview
CAUTION
To avoid to avoid risk of serious damage to the equipment and/or electrocution which could result in serious injury or death, ensure that all salt added to the pool has
completely dissolved b efore activating the chlorination function of your system.
User Menu
Browse current menu;
Increase or decrease a setting;
Lock/unlock the UI (press and hold both)
On,O󰀨
Standby mode
Enter the highlighted selection;
Delete an error message
(press and hold 4 seconds)
Activate reduced
chlorine production mode
Activate 100% chlorination for
24 hours*
LED indicates information or
error message on screen
LED indicates low salt/minerals
or poor water conductivity
*Thelterpumpwillalsooperateifltrationpumpisconnectedtothecontroller
Figure 24. Controller User Interface
7.2 Initial start-Up
The following setting must be configured at the
initial start up of the device. Settings can be
changed or updated at a later time using the
general menu, details can be found in Section 8.
From factory, the chlorination is set at 50 %. It can
be set between 0 and 100 % in 10 % increments
from the “main screen” by pressing . The set
value is valid until the next modification.
7.2.1 System Power
1. Press to enter Standby mode.
2. Press again to start chlorination and
ltration.
3. Press and hold for 3 seconds to turn the
controllero󰀨.
7.2.2 Language
1. Press .
2. Use to select “Language”
then press .
3. Use to browse language the options.
4. Press to make a selection.
<-LANGUAGE
MAIN MENU
<-ENGLISH
-FRANCAIS
-ESPANOL
-ITALIANO
-DEUTSCH
-NEDERLANDS
-PORTUGUES
-CESTINA
-MAGYAR
-SVENSKA
-SLOVENSKY
SELECT LANGUAGE
7.2.3 Set Clock
1. Press .
2. Use to select “Programming”
then press .
3. Use to select “Clock”
then press .
4. Use to set hour then press .
5. Use to set minutes then press .
NOTE: Press and hold or to increment time by 10.
6. Press to exit.
<-PROGRAMMING
-LOW MODE
-SLAVE MODE
MAIN MENU
23:04
CLOCK SET UP
7.2.4 Boost Mode
In some cases, the pool may require a higher than
normal chlorination level such as in cases of high
use, poor weather or at the start of the season. Boost
mode is used to increase the chlorine level quickly.
Boost mode lasts for 24 cumulative hours at 100%
production output. If the program is set to perform
chlorination 12 hours per day, Boost mode will be
active for 12 hours on the first day and 12 hours
on the second day. If the filter pump is connected
to the controller, the filter pump will operate in
Boost mode also. The controllers operating times
including filtration schedules are temporarily
Wi-Fi to phone connection

Page 17
Page 16 Clearwater Duo™, eXO®| Installation Manual
ignored for the duration of the Boost mode. Once
Boost mode completes, the controller and filter
pump will resume programmed operations.
NOTE: If the device is equipped with a Dual Link
module, the Boost mode will not take the ORP
value into account. The Boost mode takes
priority over the ORP regulation
1. Press .
23:04 ON
BOOST MODE 23:59
2. If the controller is in Low/Cover mode you will
needtoconrmthatyouwantBoostmodeto
override Cover or Low mode settings.
7.2.5 Low Mode
Low mode is designed to reduce chlorine
production in situations where the pool is covered
or when pool use is limited. Chlorine production
needs will be lower when pool use is low and/or
when pool water is not exposed to UV rays etc.
Low mode output can be set in the main menu
settings for Low mode. Low can be set from
0%-30% in 10% increments. Programs are still
active while the controller is in Low/Cover mode.
1. To manually enter Low mode press .
2. To exit Low mode press again.
23:04 ON
LOW MODE 10%
7.2.6 Cover Mode
If the pool is equipped with a compatible electric roller
cover, this can be connected to the controller in order
to automatically reduce chlorination upon closing the
cover, this is known as Cover mode, see Table 5 and
Figure 10 for wiring details. Chlorination will resume
at the level determined by the programming upon
opening the compatible electric cover.
Cover mode output can be set in the main menu
settings for Low mode. Low can be set from
0%-30% in 10% increments. Programs are still
active while the controller is in Low/Cover mode.
Check that the cover is compatible and connected
to the chlorinator.
Cover mode will automatically be activated when
the cover is closed. The Cover mode message and
the output percentage are displayed on the screen.
23:04 ON
COVER MODE 10%
Cover mode will stop as soon as the cover is
completely open.
If the controller is equipped with a Dual Link
module we do not recommend connecting the
Cover mode. More specifically, chlorination is
managed via the Dual Link module. In cases where
the Cover mode is connected in the presence of
a Dual Link module: chlorination will take place
upon closing the roller cover, even if the ORP
measurement is greater than the setpoint value.
7.2.7 Cold Water Protection
In addition to recording and displaying the water
temperature, the temperature sensor is used to
protect the cell, which is sensitive to cold water.
The temperature displayed on the top left of the
home screen will begin to flash at 15°C.
23:04 ON15°
When water temperature is under or equal to 15°C,
chlorine production automatically switches to the
level defined in Low/Cover mode.
When water temperature is under or equal to 10°C,
chlorine production is stopped. The absence of
chlorination at this temperature is not hazardous,
as bacterial development is slowed in cold water.
In addition to the flashing temperature, a “LOW
TEMPERATURE” message is alternately
displayed.
Even in cold water temperatures, Boost Mode may
be initiated.
When the temperature goes over 10°C again, the
output percentage will be set to Low/Cover.
When the temperature goes over 15°C again,
chlorination resumes its level of operation
configured using programs.
7.2.8 Locking the Controller
The controller can be locked, thus deactivating the
buttons on the user interface panel. Simultaneously
press and hold the and buttons for 3
seconds. This function can be accessed from any
screen/menu.
Locking the controller automatically returns the user to
the home screen. To unlock the controller, press and
hold the and buttons for another 3 seconds.

Page 19
Page 18 Clearwater Duo™, eXO®| Installation Manual
Section 8. Installing and Assigning
Equipment
8.1 Filter Pump
Both single and variable speed pumps can be
connected to and operated by the controller.
8.1.1 Single Speed Filter Pump
NOTE: For any manually-operated variable speed pump
(i.e., any pump that does not have an RS485
communication cable), you must set the pump
congurationtosinglespeed.
1. Disconnect power from the chlorinator and
remove the cover and lower housing.
2. Connectthelterpumptothecontrollerat
the pump connection point in the high voltage
raceway. For Australian installations plug the
lterpumpintothesocketprovidedonthe
underside of the control unit see Table 5 and
Figure 10 for wiring details.
3. Replace the lower housing and cover.
4. Plug the pump into the socket in the base of
the chlorinator.
8.1.2 Assign Single Speed Pump
1. Press .
2. Use to select “Filter Pump”
then press .
3. Use to select “Single Speed”
then press .
4. The user interface will prompt “Single Speed
Plugd to Device”. Use to select “Yes”
then press .
<-FILTER PUMP
-AUX/LIGHTS
-PROGRAMMING
-LOW MODE
-SLAVE MODE
-REVERSING
-HELP MENU
-LANGUAGE
MAIN MENU
<
-BACKWASH
-SINGLE SPEED
-VARIABLE SPEED
FILTER PUMP
<
PLUGD TO DEVICE?
-YES
-NO
SINGLE SPEED
8.1.3 Variable Speed Filter Pump
The following pump models are compatible:
FloPro™ VS, Flopro™ VS AUT
NOTE: Not compatible with Zodiac e3 1Hp pump, or any
any other manually-operated variable speed pump
that does not have an RS485 communication cable;
is compatible with e3 1.5Hp pump, which features
RS485 compatibility.
1. Disconnect power from the chlorinator and
remove the cover and lower housing.
2. Connectthelterpumptothecontrollerat
the VSP RS485 connection point in the low
voltage raceway, see Table 5 and Figure 10 for
wiring details.
3. Remove the single screw on the rear hatch
of the VS pump to access the red 4-pin
connector and communication cable.
If the On Board Controller is connected to the
RS485, remove it and set it next to the hatch.
Removethe‘onboard’
controllerred4pin
connector
4. Feed the cable with red pin connector through
the cable gland hole and push onto the four
pins on the pump PCB.
5. Run the cable from the VS pump through the
soft membrane under the chlorinator housing
(pierce with a screwdriver).
Pierceholethruthesoft
membranetorunthe4corecable
6. Strip a few cm of bare wire from the 4 core
cable and connect the cable to the low voltage
section marked ‘VSP RS485’.
7. Ensure the RS485 wires are in the proper order.
8. Ensure the pump DIP switches are in the
correct position as follows:
1 = up
2 = up
3 = down
4 = down
5 = up
LOW VOLTAGE HIGH VOLTAGE
RED
BLK
YEL
GRN
On the Controller
RED
BLK
YEL
GRN
On the Pump
NOTE: Do not change the position of the dip switches
on the pump.

Page 19
Page 18 Clearwater Duo™, eXO®| Installation Manual
4corecable
PumpPower
cableplugsinto
thesocketofthe
chlorinator
9. Replace the lower housing and cover.
10. Plug the pump into the socket in the base of
the chlorinator.
8.1.4 Assign Variable Speed Pump
1. Press .
2. Use to select “Filter Pump”
then press .
3. Use to select “Variable Speed”
then press .
4. The user interface will prompt “Variable Speed
Plgd to Device”. Use to select “Yes”
then press .
5. Use to select a speed then press .
6. Use to adjust the RPM.
7. Once desired RPM is reached, press .
8. Press to exit.
NOTE: If multiple VSP timers have a time slot in
common, the higher RPM will be operated.
<-FILTER PUMP
-AUX/LIGHTS
-PROGRAMMING
-LOW MODE
-SLAVE MODE
-REVERSING
-HELP MENU
-LANGUAGE
MAIN MENU
<
-BACKWASH
-SINGLE SPEED
-VARIABLE SPEED
FILTER PUMP
<
PLUGD TO DEVICE?
-YES
-NO
VARIABLE SPEED
<
VARIABLE SPEED
-SPEEDS
-MIN/MAX
-PRIMING
-PROGRAMMING
<
VSP SPEEDS
-RPM 1 1000
-RPM 2 1500
-RPM 3 2000
-RPM 4 2850
-QUICK 3450
8.1.5 Quick Clean
Quick Clean is a backwash mode is used to quickly
start/stop the filter pump (single- or variable-speed
pump) in order to backwash the filter.
For variable speed pumps, the backwash RPM is
set under “Quick”.
1. SelectYEStoactivateltration.
2. SelectNOtostopltration.
For safety reasons, the chlorination is stopped
during the backwash mode. To avoid emptying the
pool, the backwash mode automatically stops after
5 minutes. The variable speed pump RPM is by
default set at 3450 rpm (max speed). This can be
changed in the priming menu.
8.2 Aux/Lights
The chlorinator is capable of controlling devices in
addition to the filter pump. The equipment must be
connected to the chlorinator using the appropriate
auxiliary line:
Aux 1: for equipment connected to the high voltage
supply (230 V) (not applicable for Australia).
Aux 2: for equipment connected to the low voltage
supply (12/24 V).
The following functions are available in the
AUX/LIGHTS menu for auxiliaries 1 and 2:
● Turnthelightsorauxequipmenton/off
● Programatimer(Seesection8.7.6fordetails)
NOTE: For Australian chlorinator to control the light
transformer, an additional switching box is
required. Please contact your local pool care
professional for this relay box, item code
WW000222.
1. Remove the lower housing and cover to
expose the connection bar.
2. Run the supplied low voltage 2 core wire
through the rubber grommet from the relay
switch box into the terminal bar marked
‘AUX 2’.
3. Push the red pin connector into the relay
switch.
4. Use cable ties to hold in place if necessary,
then replace the cover/s.
5. Plug the relay switch box into any
available 240V GPO.
6. Plug the light transformer directly into the
socket located in the switch box. This will now
control the light directly from the chlorinator.

Page 21
Page 20 Clearwater Duo™, eXO®| Installation Manual
240VAC Outlet
Relay Switch Box
Light Transformer
Pool Light
Chlorinator
Power pack
LOW VOLTAGE HIGH VOLTAGE
2X OR 4X
LIGHT
TRANSFORMER
Low voltage cable
from transformer
to pool light
Light transformer
plugs into socket
outlet on relay
switch box
Relay switch box
plugs directly into
240VAC for power
Low voltage 2 core cable
wires directly to red
terminal on relay switch
and into AUX 2 terminal
on power pack
Figure 25. Light Transformer, Switch Box and
Chlorinator Connections
8.2.1 Assign Lights
1. Press .
2. Use to select “Aux/Light” then press .
3. Use to select “Assign Lights” then press .
4. Use to select “Aux 2” then press .
5. Use to select “Yes” then press .
6. Use to select “White Light” or “Color
Light” then press .
7. Press to exit.
<-AUX/LIGHTS
-PROGRAMMING
-LOW MODE
-SLAVE MODE
-REVERSING
-HELP MENU
-LANGUAGE
MAIN MENU
<
AUX/LIGHTS
-ASSIGN LIGHTS
-AUX 2
-AUX 1
<
ASSIGN LIGHTS
-AUX 2
-AUX 1
<
AUX SETUP
AUX 2 = LIGHT?
YES
NO
<
AUX 2 = LIGHT
-WHITE LIGHT
-COLOR LIGHT
8.2.2 White Light Operation
1. Press .
2. Use to select “Aux/Light” then press .
3. Use to select “Aux 2/Light” then press .
4. Use toselect“On”,“O󰀨”,
or “Set Timers”, then press .
5. Press to exit.
<
AUX 2
-OFF
-ON
-SET TIMERS
8.2.3 Color Light Operation
1. Press .
2. Use to select “Aux/Light” then press .
3. Use to select “Aux 2/Light” then press .
4. Use toselectdesiredcolor,“O󰀨”,
“On”or“DeneColor”,thenpress .