Zodiac Pool Systems Nature2 Fusion soft User manual

Installation and Operating Data
H0330100 Rev A
Installation and
Operation Manual
Compatible with
WARNING
FOR YOUR SAFETY - This product must be installed and serviced by a contractor who is licensed and qualified in pool
equipment by the jurisdiction in which the product will be installed where such state or local requirements exist. In the
event no such state or local requirement exists, the maintainer must be a professional with sufficient experience in pool
equipment installation and maintenance so that all of the instructions in this manual can be followed exactly. 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.
THIS SYSTEM INCLUDES A START-UP CARTRIDGE
REQUIRES A NATURE2MINERAL CARTRIDGE AFTER START-UP PERIOD
(not included, see page 26 for more information)

Page 2 Nature2® Fusion Soft Installation and Operation Manual

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Nature2® Fusion Soft Installation and Operation Manual
Table of Contents
Section 1. Important Safety Instructions............ 5
Section 2. System Description ............................ 7
2.1 Product Description ..........................................7
2.2 Nature2Fusion Soft Components ......................7
2.3 Product Specifications ....................................... 8
2.4 Electrical Specifications .....................................9
Section 3. Installation Instructions ..................... 10
3.1 Materials and Tools............................................10
3.2 Installation Requirements ..................................10
3.3 Anchoring the Vessel to the Equipment Pad .....11
3.4 Installation of the Vessel ....................................12
3.5 Bypass Installation.............................................13
3.6 Split-Return Installation......................................15
3.7 Installing the FUSIONM or AquaLink®RS
PureLinkTM..........................................................16
3.8 Grounding and Bonding.....................................17
3.9 Model Re-Configuration.....................................17
3.10 Installation of the Chlorine Generator Device
User Interface on an AquaLink®RS or
PDA Bezel..........................................................18
3.11 Connecting the Nature2Fusion Soft Vessel
and Flow/Temperature/Salinity Sensor ..............19
3.12 Connection to the AquaLink RS Control
System...............................................................23
3.12.1 Wiring Nature2Fusion Soft Power Pack
to a Jandy AquaLink RS ..............................23
3.12.2 Connection of PureLink Chlorine
Generator Electronics to a
Jandy AquaLink® RS ..................................24
3.13 Operation of External Control/ORP Control
Board .................................................................25
Section 4. Pool Water Preparation...................... 26
4.1 Determining Pool Size (Gallons of Water in
Your Pool) .........................................................26
4.2 Determining Pool Size (Litres of Water in
Your Pool) ..........................................................26
4.3 Selecting Cartridge Size ....................................26
4.4 Chemistry You Need to Know ............................27
4.5 Optimum Pool Water Conditions........................28
4.6 Salt (NaCl Sodium Chloride) .............................28
4.6.1 When to Add Salt ........................................28
4.6.2 What Type of Salt to Use ............................28
4.6.3 How Much Salt to Use ...............................28
4.6.4 How to Add Salt to the Pool? .....................29
Section 5. Operating Instructions ....................... 32
5.1 User Interface Controls......................................32
5.2 Reading the Display...........................................33
5.3 Operation ...........................................................35
5.4 Startup ...............................................................36
5.4.1 Start-Up Cartridge Procedure .....................36
5.4.2 Shocking .....................................................36
5.4.3 Apply Power................................................36
5.5 Operating in Winter ..........................................37
5.6 Recommendations.............................................37
Section 6. User Maintenance Instructions ......... 38
6.1 Daily...................................................................38
6.2 Weekly ...............................................................38
6.3 Monthly ..............................................................38
6.4 Every Six (6) Months (Or once every pool
season whichever is shorter) .............................39
6.4.1 Nature2Mineral Cartridge Replacement .....39
6.5 Electrolytic Cell Cleaning - As Needed ..............39
6.6 Flow/Temp/Salinity Sensor Cleaning .................40
6.7 Winterizing .........................................................41
Section 7. Troubleshooting ................................. 42
7.1 Problems and Corrective Action ........................42
7.2 Service Codes ...................................................45
7.3 Level 2 Service Codes.......................................46
7.4 Additional Letter Codes .....................................46
Section 8. Temperature Conversion ................... 47
Section 9. Nature2Fusion Soft and PureLink
Exploded Views and
Replacement Kits ............................... 48
9.1 Nature2FUSIONM and PureLink
Control/Power Pack Replacement Parts ...........48
9.2 Nature2Fusion Soft Replacement Parts ...........50

Page 4 Nature2® Fusion Soft Installation and Operation Manual
Figures Tables
Figure 1. Nature2Fusion Soft Components.......... 7
Figure 2. Anchor Bracket Installation ................... 11
Figure 3. Pipe Cutout ........................................... 12
Figure 4. Example of Nature2Fusion Soft
Installation With Options ....................... 13
Figure 5. Example of Bypass Installation ............. 14
Figure 6. Nature2Fusion Soft Split-Return
Installation ............................................. 15
Figure 7. Power Pack Installation......................... 16
Figure 8. Chlorine Generator Power Interface
Board..................................................... 17
Figure 9. Installation of the User Interface ........... 18
Figure 10. Vessel Installation and
Flow/Temp/Salinity Sensor .................... 19
Figure 11. Wiring Diagram for the Power Pack ...... 20
Figure 12. 240 VAC Wiring Diagram for the
AquaLink®RS PureLinkTM System ........ 21
Figure 13. 120 VAC Wiring Diagram for the
AquaLink RS PureLink System ............ 22
Figure 14. Power connection between AquaLink
RS enclosure and Nature2Fusion Soft
enclosure............................................... 23
Figure 15. Wiring Nature2Fusion Soft Control
Center to an AquaLink RS
Control System...................................... 23
Figure 16a. Wiring a PureLink Control System
Network ................................................. 24
Figure 16b. Wiring a PDA Control System Network.. 24
Figure 17. Movable ORP Jumper J14 .................... 25
Figure 18. User Interface........................................ 32
Figure 19. Electrolytic Cell Cleaning ...................... 40
Figure 20a. Nature2Fusion Soft Power Pack ........... 48
Figure 20b. AquaLink®RS PureLinkTM Power
Center, 6614AP..................................... 49
Figure 20c. AquaLink RS PureLink Power Center,
6613AP.................................................. 49
Figure 21. Nature2Fusion Soft Vessel Exploded
View....................................................... 50
Table 1. Approximate Pounds and Kilograms of
Salt Needed to Obtain 3.0 gpl
(3,000 ppm) ............................................. 30
Table 2. Approximate Pounds and Kilograms of
Stabilizer Needed to Obtain 50 ppm......... 31

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Nature2® Fusion Soft Installation and Operation Manual
Section 1. Important Safety Instructions
READ AND FOLLOW ALL INSTRUCTIONS
DANGER
To reduce the risk of injury, 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
When mixing acid with water, ALWAYS ADD ACID TO WATER. NEVER ADD WATER TO ACID.
WARNING
To reduce the risk of electric shock, fire or injury, service should only be attempted by a qualified pool service
professional.
WARNING
EQUIPMENT UNDER PRESSURE: Always turn pump off prior to installing or changing any Nature2vessel or
cartridge or chlorine cell. Your pump/filter system is operated under pressure and the pressure must be released
before you begin work. Please see your pump/filter owner’s manual for further instructions.
All electrical work must be performed by a licensed electrician and conform to all national, state, and local codes.
When installing this equipment, basic safety precautions should always be followed, including the following:
WARNING
PREVENT CHILD DROWNING: Do not let anyone, especially small children, sit, step, lean or climb on any
equipment installed as part of your pool’s operational system. Locate the components of your operational system
at least three (3) feet (1 m) from the pool so children cannot use the equipment to access the pool and be injured
or drown.
WARNING
To Reduce the Risk of Injury -
• The water in a spa should never exceed 104°F (40°C). Water temperatures between 100°F (38°C) and 104°F
(40°C) are considered safe for a healthy adult. Lower water temperatures are recommended for young children
and when spa use exceeds 10 minutes.
• 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 100°F (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.
• The use of alcohol, drugs, or medication before or during spa or hot tub use may lead to unconsciousness with
the possibility of drowning.
• 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.
• 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.

Page 6 Nature2® Fusion Soft Installation and Operation Manual
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.
• Pregnant or possibly pregnant women should consult a physician before using a spa or hot tub.
• Water temperature in excess of 100°F (38°C) may be injurious to your health.
• 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 five (5) feet (1.52 m)
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 100°F (38°C) may be hazardous to your health.
SAVE THESE INSTRUCTIONS
CAUTION
It is important to note that certain materials used in and around swimming pools and spas may not be compatible
with chemicals commonly used to purify pool and spa water (e.g. acids, chlorine, salt, stabilizers, etc.).
As such, Zodiac Pool Systems, Inc. does not warrant or guarantee that the chlorinated water generated by the
Nature2Fusion will not damage or destroy certain types of plants, decking, coping and other materials in and
around your pool and/or spa. Before selecting materials to be used in and around your pool and/or spa, please
discuss all options with your contractor to assess the compatibility of such materials and chemicals.
Some helpful considerations may include:
• Choosing plants that can withstand splash out of pool water containing chlorine and/or salt and other water
purification chemicals.
• All metal components used in and around a pool should be of a high grade, quality stainless steel.
• Careful selection of masonry products. The porosity and hardness of natural stones varies greatly. Therefore
we recommend you consult with your builder or stone contractor on the best choice for stone materials around
your pool or spa.
• Sealing all masonry products. Professionals in the stone industry specify that even natural stone, especially
when used outdoors, be sealed to prevent weathering, staining, and premature degradation. Consult with your
stone or deck contractor for the proper sealer for the masonry products you have selected to use around your
pool or spa.
• For optimal results, sealers should be reapplied on a regular basis. Reapply the protective sealer on a schedule
per the manufacturer’s instructions.
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 98.6°F (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:
• Unawareness of impending danger;
• Failure to perceive heat;
• Failure to recognize the need to exit spa;
• Physical inability to exit spa;
• Fetal damage in pregnant women; and/or
• Unconsciousness resulting in a danger of drowning.

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Nature2® Fusion Soft Installation and Operation Manual
Section 2. System Description
2.1 Product Description
The Nature2Fusion Soft is an all-in-one, sanitizing system that includes mineral sanitization and saltwater chlorination
technologies in one housing, that can be interfaced with a centralized pool control system.
The Nature2Fusion Soft uses a dual approach to sanitizing pool water. The first process is Zodiac’s patented Nature2
technology which delivers controlled trace amounts of beneficial minerals to help reduce bacteria and maintain algae
free pool. The mineral cartridge reduces the amount of chlorine your pool requires, which dramatically improves the
water quality and extends the life of the electrolytic cell. The second process is known as electrolysis which produces
chlorine from a low concentration of salt added to the pool water. Chlorine kills bacteria, oxidizes organic material,
and kills algae then reverts back to salt. The Nature2Fusion Soft then reuses the salt to repeat the process again.
2.2 Nature2Fusion Soft Components
The Nature2Fusion Soft system is comprised of the following components:
Nature2FUSIONM Power Pack (for stand alone systems, sold separately)
• The Nature2FUSIONM power pack converts AC power into low voltage DC current which is required by the
cell to perform the electrolysis.
• The LCD display offers monitoring of chlorine production, cell modes, salinity level, temperature, water flow
and diagnostics.
• The power pack is connected with the pool circulation pump electrical source so that the electrolytic cell can
only operate when the pool pump is on. The flow portion of the flow/temp/salinity sensor is a backup device
only.
Figure 1. Nature2Fusion Soft Components
Drain Plug
Vessel
Outlet Port
Flow/Temperature/
Salinity Sensor
Vessel Anchors
Inlet Port
Nature Cartridge
2
Electrolytic Cell

Page 8 Nature2® Fusion Soft Installation and Operation Manual
AquaLink®RS PureLinkTM Power Center (For centralized pool control system, sold separately)
• The PureLink system is an all-in-one saltwater chlorinator control system power center for use with AquaLink
RS PDA, All Button, Pool Link, or OneTouchTM controllers.
• The AquaLink RS PureLink power center converts AC power into low voltage DC current which is required by
the cell to perform the electrolysis.
• The LCD display offers monitoring of chlorine production, cell modes, salinity level, temperature, water flow
and diagnostics.
• The chlorine generator electronics are connected with the pool circulation pump electrical source so that the
electrolytic cell only operates when the pool pump is on. The flow portion of the flow/temp/salinity sensor is a
backup device only.
Nature2Fusion Sanitizing Vessel
• The sanitizing vessel uses a combination of an electrolytic cell and a mineral cartridge. The electrolytic cell
contains bipolar electrodes which perform the electrolysis and produce chlorine when energized with DC
current. Chlorine is generated as pool water containing salt passes through the cell. The chlorine production
can be varied by either adjusting the Chlorine Production Level on the power center or by varying the number
of hours the Nature2Fusion Soft is on each day. The Nature2Fusion Soft automatically cleans the
electrodes once every three (3) hours by reversing polarity. This does not interrupt the production of
chlorine. The mineral cartridge delivers controlled trace amount of silve and copper that works in conjunction
with the chlorine to maintain an algae-free pool.
Flow/Temperature/Salinity/Sensor
• The flow portion of the flow/temp/salinity sensor helps detect if there is adequate water flow through the vessel.
• The salinity portion of the flow/temp/salinity sensor detects the level of salt in the pool water. This salt level is
displayed in grams per liter (GPL)* on the liquid crystal display (LCD) whenever the salinity button is pressed.
This eliminates the need for manual pool water salinity testing.
• Pool temperature is displayed by pressing the temperature button.
*1 gram per liter (GPL) = 1000 ppm (parts per million)
2.3 Product Specifications
Nature2Fusion Soft 700 Nature2Fusion Soft 1400
Capacity Up to 12,000 gal.
(45,000 L)
Up to 40,000 gal.
(151,000 L)
Replacement Nature2cartridge
(sold separately)
Important: The proper replacement
cartridge model is indicated on the
label of the vessel
DuoClear®25 or Nature2Fusion 25
#W28000 (single)
#W26000 (4-pack)
DuoClear 45 or Nature2 Fusion 45
#W28002 (single)
#W26002 (4-pack)
Maximum operating pressure 50 psi 50 psi
Minimum flow rate 30 gpm (114 lpm) 30 gpm (114 lpm)
Maximum flow rate 120 gpm (455 lpm) 120 gpm (455 lpm)
Salt Level Requirement * 3,000 - 3,500 ppm 3,000 - 3,500 ppm
Recommeded Salt Level * 3,000 ppm 3,000 ppm
Vessel Dimensions 16.5”L x 16”H x 14.5”D (42 cm x 40 cm x 37 cm)
Power Pack Dimensions 14.5”L x 10”H x 6.5”D (37 cm x 25 cm x 17 cm)
Vessel Weight 10.6 lbs (4.8 kg) 11 lbs (5 kg)
Power Pack Weight 25 lbs (11.3 kg) 25 lbs (11.3 kg)
* Do not exceed 3,500 ppm

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Nature2® Fusion Soft Installation and Operation Manual
2.4 Electrical Specifications
Circuit Protection If only the Nature2Fusion Soft is connected to the circuit breaker, use a 5 AMP fuse. If more
devices are connected to the circuit breaker use a 20 AMP fuse at the electrical panel.
Nature2Fusion Soft 700 Connected to FUSIONM Nature2Fusion Soft 1400 Connected to FUSIONM
Input 120 VAC, 50/60 Hz, 1.5 AMPS
240 VAC, 50/60 Hz, 0.75 AMPS
120 VAC, 50/60 Hz, 2.5 AMPS
240 VAC, 50/60 Hz, 1.25 AMPS
Output 22-30 VDC @ 3 AMPS maximum 22-30 VDC @ 6 AMPS maximum
Chlorine 0.625 lb / day (283 gm / day) 1.25 lb / day (567 gm / day)
External
Control
Option
ORP/External Control Connector
AquaLink®RS485 Connector
ORP/External Control Connector
AquaLink RS485 Connector
CAUTION
The FUSIONM saltwater chlorinator electronics are factory wired for 240 VAC service. If the available
electrical service is 120 VAC, then the power supply wiring must be changed to operate on 120 VAC as shown in
Figures 11 and 13.
The chlorinator electronics are powered from the LOAD SIDE of the pool circulation pump relay; therefore, if the
available electrical service is 120 VAC, then the pump must also be wired for 120 VAC.

Page 10 Nature2® Fusion Soft Installation and Operation Manual
WARNING
When using electrical products, basic precautions should always be followed, including the following:
• RISK OF ELECTRIC SHOCK WHICH CAN RESULT IN SERIOUS INJURY OR DEATH. Before attempting
installation or service, ensure that all power to the device is disconnected/turned off at the circuit breaker.
• Grounding is required. The unit should be installed by a qualified service representative and should be properly
grounded and bonded. (See Section 3.8, Grounding and Bonding).
• Install to permit access for servicing.
• Read Section 1, Safety Information. Before attempting any electrical wiring, be sure to read and follow
Safety Instructions. Wiring should only be attempted by a qualified professional.
Section 3. Installation Instructions
3.1 Materials and Tools
NOTE Salt not included. See Section 4, Pool Water Preparation.
Installation Materials Furnished Needed
PureLinkTM with Power Center (Optional - Sold separately)
AquaLink®RS PureLink power center (Standard or Breaker)
Two (2) Wire Nuts
Installation Template
Nature2Fusion Soft
Vessel with 2”-2½”(5 - 6.3 cm) Universal Unions
Sensor with 16 ft (4.88 m) Cable and O-ring
Universal Union Nut (to secure sensor)
16 ft (4.88 m) DC Power Cord
Installation and Operation with Warranty Information
FUSIONM or APUREM Power Pack (Sold separately)
Power Pack Housing with User Interface Control
Two (2) Wire Nuts
Installation Template
Tools Needed for Installation
Tape Measure
Phillips & Flathead Screwdrivers
Pliers
Hacksaw
Voltmeter to determine line voltage of AC wiring to power
supply
Electric Drill Motor and 1/4” (0.6 cm) masonry drill bit for
mounting power supply on block or stucco wall
An NSF®approved All Purpose Cleaner Primer
An NSF approved All Purpose Cement (such as Weld-On 794,
793)
3.2 Installation Requirements
Decide where to install the Nature2Fusion Soft.
• The vessel must be installed on a 17”(43 cm) length of pipe.
• The vessel must be installed on the existing pad or a concrete slab to support the weight.
• The vessel must be installed as the last piece of equipment in the circulation plumbing system just before the pool
with the Nature2side as the inlet and the salt chlorinator side as the outlet. The inlet and outlet are clearly marked
on the vessel.
WARNING
FOR YOUR SAFETY: This product must be installed and 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.

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Nature2® Fusion Soft Installation and Operation Manual
• The vessel must be installed downstream from the heater or heater damage will occur.
• If the vessel is installed below the pool water level, it must be installed with a check valve. The check valve will
isolate the vessel and prevent pool draining during installation, cell change or cartridge change.
• If plumbing size is greater than 2”(5 cm) diameter or if flow rates are greater than 120 gpm (455 lpm), the vessel
must be installed in a bypass configuration (see Section 3.5).
• If the vessel is used with water feature line system, it must be installed in a split-return configuration or vessel
damage may occur (see Section 3.6).
• Never install the Nature2Fusion directly into copper plumbing as pipe damage may occur. If brass or bronze
backwash valves, or other sensitive metallic components are installed, consult your dealer for recommendations
on your particular system.
3.3 Anchoring the Vessel to the Equipment Pad
In some areas, for example Florida, building codes require that all appliances be securely fastened to the equipment
pad in order to withstand high wind pressures created by hurricanes. Please follow all local codes and standards.
NOTE Anchor screws and washers for securing the filter to the equipment pad are not included with the filter. Zodiac
Pool Systems, Inc. (“Zodiac”) recommends that a 2¼”X ¼”(5.7 cm X 0.6 cm) long stainless steel Tapcon®
concrete screw and stainless steel flat washer are used to mount each of the two (2) anchor holes in the base
to the equipment pad. The Tapcon concrete screw meets Florida building code requirements.
1. Manually snap on the two (2) clip-type anchor brackets onto the side feet of the vessel as shown in Figure 2.
Make sure these anchor brackets are attached firmly to the feet of the vessel.
2. Place the vessel on the pad and mark the each hole of the anchor brackets on the concrete pad.
3. Drill a 5/32”(0.5 cm) hole in the concrete at each of the two (2) holes of the anchor brackets. The correct size
concrete drill bit should be obtained when the concrete screws are purchased.
4. Install the Tapcon screws and washers through each of the two (2) holes to secure the vessel to the equipment
pad. Do not over-torque the screws.
Figure 2. Anchor Bracket Installation
Install the anchor brackets on
each side foot of the vessel
2¼”X ¼”(5.7 cm X 0.6 cm)
Stainless Steel Tapcon
Screws and Stainless
Steel Washers
3 1/2”(9 cm)
Thick (Min)
Concrete Pad

Page 12 Nature2® Fusion Soft Installation and Operation Manual
3.4 Installation of the Vessel
1. Make sure the pool pump is turned off.
2. Remove the temporary cap on the cartridge side of the vessel, and install the Nature2start-up cartridge included
in the box. Do not throw out the cap. It will be used for winterization of the system.
3. Locate a suitable section of pipe to install the vessel, approximately 17”(43 cm) long, that conforms to the
installation requirements outlined in Section 3.2.
4. Cut out a 137/8”(35 cm) section of the 2”(5 cm) pipe to insert the vessel (see Figure 3).
5. Connect the outlet from the filter or heater to the vessel inlet port with the appropriate Schedule 40 PVC pipe;
secure the connection with a pipe glue that is compatible with PVC.
NOTE Reducer bushings can be used to accommodate 1.5”(3.8 cm) plumbing with no effect on the
operation of the Nature2Fusion Soft.
6. Connect the vessel outlet port to the pool return line with the same type of PVC pipe and secure the connection
with pipe glue. Allow sufficient time for the glue to dry.
7. Hand tighten all unions, sensors, and collars.
CAUTION
Be careful not to get finger caught between inlet union and plug when tightening as this may cause an injury.
8. Start the pump and check for leaks.
Figure 3. Pipe Cutout
Universal Unions and Nuts
for Inlet and Oulet ports
For a 2"(5 cm) SiSethe cutout is 13Ǭ"(35 cm)
with the full unions.
NOTE Total length of the Nature
2
Fusion vessel
with the full unions is 16ǫ"(42 cm).
Flow/Temperature/
Salinity Sensor
Inlet
Outlet
Flow
A
A
Flow

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Nature2® Fusion Soft Installation and Operation Manual
3.5 Bypass Installation
If plumbing size is greater than 2”(5 cm) diameter or if flow rates are greater than 120 gpm (450 lmp), the vessel
MUST be plumbed on by-pass (see Figure 5). It is recommended that 2”(5 cm) PVC Schedule 40 pipe is used to
plumb the by-pass line. A control valve must be installed to regulate the flow through the vessel. It can be installed on
the inlet side of the vessel or between the inlet and discharge side of the bypass piping.
1. Make sure the pool pump is turned off.
2. Remove the temporary cap on the cartridge side of the vessel, and install the Nature2start-up cartridge included
in the box. Do not throw out the cap. It will be used for winterization of the system.
3. Locate a suitable section of pipe in the by-pass line to install the vessel, approximately 17”(43 cm) long, that
conforms to the installation requirements outlined in Section 3.2.
4. Cut out a 137/8”(35 cm) section of the 2”(5 cm) pipe to insert the vessel (see Figure 3).
5. Install tees in the return line to allow water to be diverted to the Nature2Fusion Soft vessel.
6. Connect the bypass line from the first tee to the inlet of the vessel and from the outlet of the vessel to the second
tee.
Figure 4. Example of Nature2Fusion Soft Installation With Options
Flow
Flow
Flow/Temperature/
Salinity Sensor
Flow/Temperature/
Salinity Sensor
Nature
2
Fusion Soft
Heater
Pump
Spa Intake
Pool Intake
Spa Return
Pool Return
Filter
Optional ChemLink or
other ORP Control
FUSIONM
or
APUREM
or
PureLinkTM
or
Existing AquaPure®
Power Pack

Page 14 Nature2® Fusion Soft Installation and Operation Manual
7. Install a control valve in the return line between the first and second tee or prior to the vessel inlet on the bypass
line to control the water flow through the bypass.
8. Hand tighten all unions, sensors, and collars.
CAUTION
Be careful not to get finger caught between inlet union and plug when tightening as this may cause an injury.
9. Fully open any closed valves, including the control valve, and start the pump diverting water through the new
bypass.
10. Check the vessel and system for leaks.
11. Adjust control valve so that flow rate through the vessel is between a minimum of 30 gpm (114 lpm) and a
maximum of 120 gpm (455 lpm).
Figure 5. Example of Bypass Installation
Flow
Flow
Flow/Temperature/
Salinity Sensor
Flow/Temperature/
Salinity Sensor
Nature
2
Fusion Soft
Heater
Pump
Spa Intake
Pool Intake
Spa Return
Pool Return
Filter
Control Valve Installation Options
Install on the inlet
side of the vessel
Install between the inlet
and discharge side of
bypass plumbing
Optional ChemLink or
other ORP Control
FUSIONM
or
APUREM
or
PureLinkTM
or
Existing AquaPure®
Power Pack

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Nature2® Fusion Soft Installation and Operation Manual
Figure 6. Nature2Fusion Soft Split-Return Installation
3.6 Split-Return Installation
If the vessel is used with a water feature line system, it must be installed in a split-return configuration or vessel
damage may occur.
1. Make sure the pool pump is turned off.
2. Remove the temporary cap on the cartridge side of the vessel, and install the Nature2start-up cartridge included
in the box. Do not throw out the cap. It will be used for winterization of the system.
3. Locate a suitable section of pipe to install the vessel that conforms to the installation requirements outlined in
Section 3.2.
4. Install a 3-way valve in the return line to allow water to be diverted/restricted to the Nature2Fusion Soft and
water feature line.
5. Fully open any closed valves, including the 3-way, to allow unrestricted flow to the Nature2 Fusion Soft and
water feature line.
6. Hand tighten all unions, sensors, and collars.
CAUTION
Be careful not to get finger caught between inlet union and plug when tightening as this may cause an injury.
Flow
Flow
Flow/Temperature/
Salinity Sensor
Flow/Temperature/
Salinity Sensor
Nature
2
Fusion Soft
Optional ChemLink or
other ORP Control
Heater
Pump
Spa IntakePool Intake
Spa Return
Pool Return
Filter
Water Feature Line
FUSIONM
or
APUREM
or
PureLinkTM
or
Existing AquaPure®
Power Pack

Page 16 Nature2® Fusion Soft Installation and Operation Manual
7. Start the pump and allow water to pass through the newly plumbed system. Check for any leaks.
8. Make sure the flow rate to the Nature2Fusion Soft does not drop below 30 gpm (114 lmp).
3.7 Installing the FUSIONM or AquaLink®RS PureLinkTM
CAUTION
The power center is required to have the appropriate means of disconnection, circuit isolation, and/or branch circuit
protection installed upstream of the power center.
NOTE The control/power center should be located at or near the equipment pad.
1. Locate the control/power center at least five (5) feet or more away from pool/spa and five (5) feet off the ground.
All national, state, and local codes are applicable.
2. The control/power center comes with two (2) full length, heavy duty mounting brackets fastened to the back
of the power center during shipping. Remove the four (4) screws that are holding the two (2) brackets and the
cardboard shipping cover in place (see Figure 7). Remove and discard the cardboard.
3. Using the top mounting bracket as a guide, mark three (3) holes on the mounting surface where the power center
will be installed. Drill the holes in the mounting surface.
NOTE The three (3) mounting holes are 4" (10 cm) apart center to center.
NOTE Use heavy-weight screws. The power center with all available components installed weighs approximately 30
pounds.
4. Reinstall the mounting brackets to the top and bottom of the back of the control/power center using the four (4)
screws that were removed in Step 2. Ensure that the brackets are rotated from the original shipping position.
5. Hang the power pack on the surface using the three (3) holes drilled in Step 3. With the control/power center in
place, mark three (3) holes for the bottom bracket mounting.
NOTE As with the top brackets, the bottom bracket requires three (3) mounting holes. The three (3) mounting holes
are 4" (10 cm) apart center to center.
6. Drill the holes and install the screws.
Figure 7. Power Pack Installation
Screws (4)
Mounting Brackets (2)
Control/Power Center
Mark holes on mounting surface
4”
(10 cm)
4”
(10 cm)

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Nature2® Fusion Soft Installation and Operation Manual
Figure 8. Chlorine Generator Power Interface Board
Cut JL1 Jumper to configure
board as a Nature2Fusion
Soft 700 Model
Chlorine Generator
Power Interface Board
Heat Sink
L-Bracket
7. Level the control/power center and tighten all screws, ensuring that the control/power center is securely fastened
to the mounting surface.
8. Check source voltage. (All units are factory wired for 240 VAC). In order to use on 120 VAC, the internal
factory wiring of the power center must be changed. (see Figures 11 and 13).
3.8 Grounding and Bonding
A solid, copper # 8 awg (8.4 mm2) wire is recommended for connecting the control/power center to a permanent earth
ground connection that is acceptable to the local inspection authority. Refer to your local codes for the acceptable
grounding wire gauge.
The National Electric Code (NEC) requires pool equipment to be bonded to each other. Check your local codes to
determine if the NEC and/or other local installation codes are enforced by the Authority Having Jurisdiction (AHJ).
A solid, copper # 8 AWG (8.4 mm2) wire is recommended, per the NEC, for bonding the power pack to a permanent
bonding connection that is acceptable to the local AHJ. Refer to your locally enforced codes for the acceptable
bonding wire gauge. Attach the bonding point located on the bottom of the chassis backplate to a common earth
bonding point. Do not use the power pack as the common bonding point. Each piece of non-related pool equipment
requiring a ground should also be bonded to the common, approved earth bonding point. Never ground a pool pump
to the chassis backplate.
3.9 Model Re-Configuration
The Nature2Fusion Soft power interface board is configured as a Nature2Fusion Soft 1400 model by factory default.
IMPORTANT
If installing a Nature2Fusion Soft 700 model the power interface board MUST be re-configured.
To configure the board as a Nature
2
Fusion Soft 700 model, use cutting pliers to cut the JL1 jumper as shown in
Figure 8.
CAUTION
If the power interface board is not re-configured, the life of your Nature2Fusion Soft will be shortened.

Page 18 Nature2® Fusion Soft Installation and Operation Manual
Figure 9. Installation of the User Interface
J1 Connector,
Power Interface
Board
Screws (4)
Ribbon Cable
J1 Connector,
User Interface
4 3 2 1
3.10 Installation of the Chlorine Generator Device User Interface on an AquaLink
®
RS or
PDA Bezel
1. On the chlorine generator user interface board, connect one end of the ribbon cable to the 16-pin J1 connector as
shown in Figure 9.
2. Connect the other end of the ribbon cable to the power interface 16-pin J1 connector.
3. Attach the chlorine generator user interface board to the bezel using the four (4) screws provided.

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Nature2® Fusion Soft Installation and Operation Manual
3.11 Connecting the Nature2Fusion Soft Vessel and Flow/Temperature/Salinity Sensor
WARNING
ATTENTION INSTALLER: If the flow/temp/salinity sensor is not installed properly, it may allow the vessel to
operate without water flow. This would cause a buildup of flammable gases resulting in FIRE or EXPLOSION.
• Mount as shown in Figure 10. This will result in the most reliable operation.
• IMPORTANT! Anytime the flow/temp/salinity sensor is connected or disconnected and reconnected, the AC
power to the unit must be turned off and back on (Cycle Power). If power is not cycled, unreliable operation of
the flow/temp/salinity sensor will result.
1. Be sure pool pump is turned off.
2. Install the flow/temp/salinity sensor into the vessel (see Figure 10).
3. Install the strain relief provided with the vessel kit into the low voltage knock out at the power pack. Feed the
connector end of the flow/temp/salinity sensor cable through the DC cord strain relief fitting. Be certain the
connector is clean and dry, then plug the cable into the connector on the power center printed circuit board as
shown in Figures 11, 12 and 13. (Do not pull flow/temp/salinity sensor cable too tight, allow some slack).
4. Plug the DC cord into the cell stud terminals protruding from the cell top at the Nature2Fusion Soft vessel. The
DC cord can be plugged into the cell in either direction.
5. Connect the DC cord to the power center. Feed the DC cord through the same strain relief fitting as the flow/
temp/salinity sensor at the power pack. Plug the DC cord into the two (2) spade connectors of the wiring harness
located in the low voltage raceway of the control/power center, see Figures 11, 12 and 13. This wiring harness
establishes the connection between the cell and the power interface board.
Figure 10. Vessel Installation and Flow/Temp/Salinity Sensor
Sometimes
Not Covered
Temperature
Sensors
Flow/Temp/Salinity Sensor Face must
be clean at all times for proper operation
Salinity
Studs
CAUTION
To avoid risk of damage to the equipment and possible injury, it is important to make sure the DC cable connector
is fully seated on the cell electrolytic stud terminals.

Page 20 Nature2® Fusion Soft Installation and Operation Manual
6. Tighten strain relief fitting screws for the flow/temp/salinity sensor and the DC cord. Do not pull
flow/temp/salinity sensor cable or DC cord too tight. Allow some slack cable inside of power pack enclosure.
CAUTION
Do not over-tighten the strain relief fitting. Over-tightening can cause damage to the flow/temp/salinity sensor
cable.
WARNING
Do not operate the electrolytic cell without water circulation. A buildup of flammable gases will result in FIRE or
EXPLOSION.
Figure 11. Wiring Diagram for the Power Pack
Power Pack Wiring Diagram
CHLORINE GENERATOR
POWER INTERFACE
J13
J12
J11
BLK/YEL
BLK/RED
BLK/WHT
BLACK Factory wired for 240 VAC service; Middle primary
wires connected together. If electrical service is
120 VAC, the power supply must be modified.
Flow, Salinity, Temp Sensors
RIBBON CABLE TO
USER INTERFACE
GR
Y
BK
R
LOW VOLTAGE RACEWAY
HIGH VOLTAGE
HEAT SINK
L - BRACKET
CHLORINE GENERATOR
USER INTERFACE
To Chlorine Generator Cell
View of chlorine generator PCB
shown with transformers and
components located behind front
face plate.
PRIMARY
SECONDARY
CHLORINE GENERATOR
TRANSFORMER
BLK/WHT
BLK/YEL
BLK/RED
BLK
Use Copper Conductors Only – Rated for 90°C Minimum
Re-wired for
120 VAC
Load 2
Load 1
Load 1 (Hot)
Ground (Chassis)
Ground (Chassis)
To Earth
Bonding Point
To Earth
Bonding Point
Load 2 (Neutral)
240 VAC
Pool Pump Timer
Circuit Breaker
Panel
Line 1
Line 2
Ground
50/60 Hz
3 wire
3
12
6
9
Filter Pump
(240 VAC)
7. Prior to reattaching the front cover, check the wiring. Be sure the flow/temp/salinity sensor is plugged in. The
DC cord should be plugged in. Also, check the AC wiring.
8. If the ribbon cable connecting the user interface to the power interface board was disconnected during
installation then reconnect before reattaching cover (see Figures 11, 12 and 13).