NATURA NWSBU2 SER.4 Product manual

INSTALLATION AND MAINTENANCE GUIDE FOR:
NATURA Water LLC.
222 East Campus View Blvd
Columbus, Ohio 43235
U.S.A.
NATURA
MODEL NWSB SER.4
COUNTERTOP WATER DISPENSER
(Aquarius Series)
NATURA
MODEL NWSBU2 SER.4
REMOTE CHILLER
(Aquarius Series)

1Installation and Maintenance Manual
INDEX
1. PRODUCT SPECIFICATIONS
2. IMPORTANT REQUIREMENTS
3. SAFETY WARNINGS
4. DIRECTIONS FOR PROPER PLACEMENT OF THE COMPONENTS
5. PROPER QUICK CONNECT FITTING CONNECTION INSTRUCTIONS
6. COUNTER TOP MODEL SCHEMATIC
7. WATER INLET/FILTRATION INSTALLATION
8. WATER INLET/FILTRATION INSTALLATION: STEP 1
9. WATER INLET/FILTRATION INSTALLATION / FILTER INSTALLATION: STEP 2
10. WATER INLET/FILTRATION INSTALLATION: STEP 3
11. WATER INLET/FILTRATION INSTALLATION: STEP 4
12. CO2SUPPLY SYSTEM INSTALLATION
13. COUNTER TOP MODEL INSTALLATION
14. COUNTER TOP MODEL TAP INSTALLATION
15. REMOTE CHILLER MODEL SHANK ASSEMBLY
16. REMOTE CHILLER MODEL INSTALLATION
17. FLOW COMPENSATOR ADJUSTMENT
18. WATER LEAK PROTECTION DEVICE ADJUSTMENT
19. START UP PROCEDURE
20. DRIP TRAY PLACEMENT
21. FILTER REPLACEMENT
22. MAINTENANCE
23. SPARE PARTS DRAWING - MODEL NWSB SER.4
24. SPARE PARTS DRAWING - MODEL NWSBU2 SER.4
25. TROUBLESHOOTING
26. CONTACT INFORMATION

2Installation and Maintenance Manual
1. PRODUCT SPECIFICATIONS:
Dimensions:
Length 19.0”
Length with Drip Tray 24.5”
Width 12.5”
Height 17.9”
Height with Taps 19.9”
Weight - Empty 65 lbs
Weight - with Water 100 lbs
Refrigerant: 3.2 ounces, R-134a
Input Voltage: 115 VAC, 60 HZ, SINGLE PHASE
Amperage: 2.6 AMPS FLA
Minimum Ambient Temperature: 40° F (4.5° C)
Maximum Ambient Temperature: 104° F (40° C)
Inlet Water Pressure: 45 PSI to 120 PSI - If your inlet water pressure does not
meet this minimum pressure requirement you may need an
expansion tank.
CO2Pressure Input: Target 60 PSI, Maximum 65 PSI (food grade CO2only)
IMPORTANT:
Dedicated CO2Tank
For dedicated CO2Tank systems, use the supplied CO2Pressure Regulator.
Existing CO2System (Bulk)
For bulk CO2systems, use a dedicated CO2Pressure Regulator set at 60 PSI.

3Installation and Maintenance Manual
o Use only original and new parts to guarantee the reliability, optimization, and
performance of the Natura water machine.
o Always wear proper protection when performing any type of service or
maintenance.
o Do not expose the CO2Cylinder to direct sun light, to sources of heat, or to
temperature below 32° F (0° C).
o Always keep the CO2Cylinder in a vertical position while in use and secure
properly with a chain or strap.
o To properly carbonate the water, make sure that CO2Cylinder valve is
completely open.
o Use only food grade CO2(UN1013) gas.
o Adjust the CO2Pressure Regulator to a target of 60 PSI with a 65 PSI maximum.
o When cleaning the unit, do not use corrosive, acidic products, or metal brushes.
o Do not wash the unit using high-pressure water.
o Connect to a water supply with a pressure of 45 to 120 PSI.
.
o The unit must be connected to a 115 VAC, 15 amp GFCI power supply. Operating
voltage is listed on the equipment data label.
o The unit must be protected by a properly installed circuit breaker. Verify that
the electrical current is correct for the power of the unit, which is listed on
the machine data label.
o To avoid electrical shock always unplug the unit from the electrical outlet before
servicing.
o All packaging materials (plastic bags, foam, etc.) should never be left within the
reach of small children. These items are potentially hazardous and may cause
severe injury or death.
o CO2is a high pressure gas – use caution when moving or making connections.
2. IMPORTANT REQUIREMENTS:
3. SAFETY WARNINGS:

4Installation and Maintenance Manual
4. DIRECTIONS FOR PROPER PLACEMENT OF THE COMPONENTS:
o Place the unit in an appropriate location, far from heat sources and with
adequate ventilation, on a flat level surface. The surface must be able
to support the 100 lb weight of the unit.
o Locate the unit within 10 feet of a water supply.
o Locate the unit within 6 feet of a 115 VAC, 15 amp GFCI power supply.
o Locate the Filter Set within 5 feet of the unit.
o Maintain at least 6 inches of clearance on both sides and 2 inches in back for
proper ventilation.
o For Remote Chiller Model: provide ventilated cabinet doors and sides to
allow for fresh air into the evaporator coil side and exhaust air out side.
Without proper ventilation the unit will not perform properly and will shorten
the life of the Compressor.
o Allow 14 inches minimum above the unit for removing the Top to perform
routine maintenance, and to allow for checking of the water level in the
Reservoir during routine maintenance.
o The Water Leak Protection Device must be connected directly to the Braided
Inlet Water Line at the customer supplied valve.
6”
6”
2”
REMOTE CHILLER MODEL
6”
6”
2”
COUNTER TOP MODEL
MODEL
REMOTE CHILLER
MODEL

5Installation and Maintenance Manual
5. PROPER QUICK CONNECT FITTING CONNECTION INSTRUCTIONS:
PLASTIC TUBING QUICK-CONNECT FITTINGS
Connections between the Pressure Regulator, Filtration Unit and Water Refrigeration Unit are
accomplished using plastic tubing and push-together quick-connect type fittings.
1. Cut tube ends square and straight.
Do not deform the tube (i.e., cause
tube to compress its diameter so
it is no longer round).
2. Make sure the outer surface of
the tube is clear of marks or
scratches for a length equal to
the “O” ring thickness to seat
properly against the tube.
3. Avoid sharp changes in direction
when routing the tubing. Sharp
turns cause the tubing to flex and
deform which reduces its low capacity
Fittings consist of two parts: a body and
a colored collet.
1. To install a tube, push it through the
collet until it seats firmly at the
bottom of the fitting.
2. To remove tube, push and hold the
collet against the body while pulling
the tube out.
Note: Systems are shipped with a plug in
each external fitting. Remove a plug in
the same manner as a tube.

6Installation and Maintenance Manual
6. COUNTER TOP MODEL SCHEMATIC:
WATER INLET/FILTRATION SYSTEM
REFRIGERATION/CARBONATION SYSTEM
CO2SUPPLY SYSTEM
NOTE:
GROUND FAULT CIRCUIT
INTERRUPTER (GFCI)
OUTLET RECOMMENDED.
NOTE:
CO2 CYLINDER
SUPPLIED BY
CUSTOMER
( 10-15-20 LBS)
CUSTOMER
SUPPLIED
VALVE
NOTE:
WATER LEAK PROTECTION
DEVICE MUST BE INSTALLED.
(IN VERTICAL POSITION)

7Installation and Maintenance Manual
7. WATER INLET/FILTRATION INSTALLATION:
1
2
3
4
5
10
8
8
7
11
6
9
ADAPTER FITTING
WATER
PRESSURE
REGULATOR
FILTER SET
3/8” O.D. WATER LINE
WATER LEAK
PROTECTION
DEVICE
(WATER BLOCK)
WATER SHUT-OFF
VALVE
WALL MOUNT
BRACKET
BRAIDED HOSE
1. Connect the components in order as shown above. Additional assembly / adjustment
will be required for the Water Leak Protection Device. This is detailed in Section 18.
NOTE:
WATER LEAK PROTECTION DEVICE MUST BE
INSTALLED PROPERLY IN VERTICAL POSITION
PER INSTRUCTIONS PROVIDED.
3/8” ELBOW
ADAPTER
FITTING
WATER BLOCK
ADAPTER
ADAPTER
FITTING
STEP 1
STEP 2
STEP 3
STEP 4
CUSTOMER
SUPPLIED
VALVE
PRE CARBON NANO

8Installation and Maintenance Manual
8. WATER INLET/FILTRATION INSTALLATION: STEP 1
1
2
3
4
5
WATER LEAK
PROTECTION
DEVICE
(WATER BLOCK)
BRAIDED HOSE
1. Connect the components in order as shown above. Additional assembly / adjustment
will be required for the Water Leak Protection Device. This is detailed in Section 18.
ADAPTER
FITTING
WATER BLOCK
ADAPTER
ADAPTER
FITTING
CUSTOMER
SUPPLIED
VALVE
3/8” COMPRESSION
FITTING
NOTE:
WATER LEAK PROTECTION
DEVICE IS FACTORY SET AT 2.
NOTE:
WATER LEAK PROTECTION
DEVICE MUST BE ASSEMBLED
AND ADJUSTED PER THE
DETAILS IN SECTION 18.

9Installation and Maintenance Manual
9. WATER INLET/FILTRATION INSTALLATION / FILTER INSTALLATION: STEP 2
3/8” ELBOW
3/8” ELBOW
10
9
FILTER SET
FILTER MANIFOLD
Pre-Sediment Filter (Inlet Side) Carbon Filter NanoCeram® (Outlet Side)
WARNING: DO NOT USE WITH WATER THAT IS NOT MICROBIOLOGICALLY SAFE OR OF
UNKNOWN QUALITY.
ATTENTION: IT IS IMPORTANT TO MAKE PROPER CONNECTIONS TO THE QUICK CONNECT
FITTINGS TO AVOID LEAKS. SEE PAGE 3.
CAUTION: DO NOT PLACE UNDUE STRESS OR SIDE LOAD ON ANY OF THE PLASTIC
FITTINGS.
1. Place the Countertop Water Dispenser or Remote Chiller no more than 10 feet from
the water source. Place the Filter Set exactly between the two.
2. Mark the Filter Set inlet and outlet on the Filter Bracket and Filter Housings before
securing the Filter Bracket to the Filter Manifold.
3. Secure the Filter Bracket to the wall or other structure using the proper fasteners. The
Filter Bracket can be turned over for space requirements. The mounting holes will be
located behind the Filter Head in this configuration.
4. Assemble 3/8” Elbow Fittings to inlet and outlet ports on Filter Manifold.
5. Install the Filters into the Filter Housings. NOTE: ENSURE THE PROTECTIVE PLASTIC
WRAPPERS ARE REMOVED FROM THE FILTERS. The Pre-Sediment Filter (white)
is assembled on the left. The Carbon Filter (black with netting) is located in the
center. The Nano Ceram Filter (pleated with netting) is located on the right. Ensure
the cartridge slips over the stand pipe in the bottom of the housing. Hand tighten.
DO NOT OVER TIGHTEN.
NOTE:
ON TOP OF THE PLASTIC FILTER
MANIFOLD THE INLET &
OUTLET PORTS ARE MARKED.
FOR PROPER OPERATION THIS
CONFIGURATION IS REQUIRED.
IN
OUT
INLET OUTLET
FILTER BRACKET

10Installation and Maintenance Manual
10. WATER INLET/FILTRATION INSTALLATION: STEP 3
11. WATER INLET/FILTRATION INSTALLATION: STEP 4
ADAPTER
FITTINGS
WATER
PRESSURE
REGULATOR
WATER SHUT-OFF
VALVE
WATER SHUT-OFF
VALVE
7
7
8
8
4
1. Connect the components in order as shown above.
2. Connect 3/8” O.D. tube from Water Pressure Regulator exit port to the 3/8” elbow inlet
port on the Filter Set.
1. Cut 3/8” O.D. tubing to appropriate length.
2. Connect the 3/8” O.D. tube from the 3/8” exit port on the Water Block
Adapter to the 3/8” inlet port on the Water Shut OffValve.
WATER BLOCK
ADAPTER
3/8” O.D. TUBING
3/8” O.D. TUBING
NOTE:
LOOK FOR FLOW DIRECTION ON
WATER PRESSURE REGULATOR.

11Installation and Maintenance Manual
12. CO2SUPPLY SYSTEM INSTALLATION:
1. Use only food grade CO2(UN1013).
2. Place the CO2Cylinder within 5 feet of the Countertop Water Dispenser or Remote
Chiller.
3. Use a small chain or strap to secure the CO2Cylinder to a secure support.
4. To ensure no debris in the CO2Cylinder Valve, and that the CO2 Cylinder is
operational, open the valve slowly to allow some CO2gas to leak out for a few
seconds. Close the CO2Cylinder Valve
5. Attach the Pressure Regulator to the Cylinder Valve and tighten it firmly. Ensure that
the supplied Seal/ O-ring is between the CO2 Cylinder Valve and Pressure Regulator
fitting.
6. Connect the 1/4” O.D. tubing to the CO2Pressure Regulator outlet fitting.
7. Proceed to Section 13 for Counter Top Model Installation, or Sections 15 & 16 for
Remote Chiller Model Installation.
4
3
1
5
CO2CYLINDER
CYLINDER VALVE
PRESSURE
REGULATOR
2SEAL / O’RING
1/4” O.D.
TUBING
NOTE:
THE CO2LINE SHOULD
NOT BE PRESSURIZED AT
THIS TIME.
NOTE:
DO NOT CONNECT CO2TUBING TO THE UNIT
UNTIL THE INSTALLATION IS COMPLETE.
(SECTION 13 FOR COUNTER TOP UNIT)
(SECTIONS 15 & 16 FOR REMOTE CHILLER UNIT)

12Installation and Maintenance Manual
13. COUNTER TOP MODEL INSTALLATION:
1. Connect the 3/8” O.D. water tube from the exit port of the Filter Set into the 3/8” Elbow
Fitting at the rear of the unit.
2. Connect the 1/4” O.D. CO2tube from the CO2Cylinder Pressure Regulator to the
1/4” Elbow Fitting at the rear of the unit.
FROM
CO2CYLINDER
FROM
FILTER SET
STILL WATER TAP
FIXED FLOW VALVE
CARBONATED WATER TAP
WITH FLOW ADJUSTMENT
FLOW
ADJUSTMENT LEVER
NOTE:
DO NOT OPEN VALVE TO CO2CYLINDER
UNTIL START-UP PROCEDURE FOUND IN
SECTION 19.

13Installation and Maintenance Manual
14. COUNTER TOP MODEL TAP INSTALLATION:
1. Locate the two Taps. They are in the top pad of the packaging.
2. Starting on the left, install the Carbonated Water Tap with Flow Adjustment.
3. Place the Tap into the front panel fitting. Ensure the Tap is aligned vertically.
Push the Tap all the way back into the fitting.
4. Screw the Front Panel Fitting to the Tap body. To tighten, turn the chrome ring on
the Front Panel Fitting counter clockwise.
5. The Tap should have a tight fit with the front panel fitting.
6. Repeat this process with the Still Water Tap. It assembles on the right side.
7. Proceed to Section 18.
VERTICALLY
ALIGNED
FRONT PANEL
FITTING
TAP BODY
(CARBONATED WATER TAP)
TURN CHROME RING COUNTER
CLOCKWISE TO TIGHTEN
FLOW ADJUSTMENT
(ADJUST TO 1 LITER/15 SEC)

14Installation and Maintenance Manual
15. REMOTE CHILLER MODEL SHANK ASSEMBLY:
WATER DISPENSE SYSTEM
1
4
2
5
3
6
SHANK
SHANK WASHER
SHANK FITTING
3/8” X 5/16”
REDUCING ELBOW
LOCKING CLIP
SHANK ADAPTER NUT
1. Assemble the Shank Washer, Shank Fitting, Shank Adapter Nut, Locking Clip,
and Reducing Elbow as show in the illustration above.
2. The Shank Adapter Nut should be hand tightened and checked for leaks during startup.
3. It is important to install the Locking Clip on the Reducing Elbow as shown.
STILL WATER SUPPLY
CARBONATED WATER SUPPLY

15Installation and Maintenance Manual
16. REMOTE CHILLER MODEL INSTALLATION:
1
2
3
CARBONATED
WATER TAP
STILL WATER TAP
DISPENSE TOWER
45
8
6
REMOTE CHILLER
MODEL
FROM CO2CYLINDERFROM FILTER SET
5/16” O.D.
TUBING
5/16” UNION
FITTING
1/4” X 5/16”
REDUCING
FITTING OR
5/16” UNION
FITTING
7
Remote Chiller Model Installation- Connection of the Carbonated Water Tubing.
1. Insert the 5/16” O.D. tubing into the tubing insulation provided.
2. Connect the 5/16” O.D tubing to the left elbow quick connect fitting on the front of the
unit.
3. Connect the other end of the 5/16” O.D. tubing to the inlet of the Flow Compensator.
4. Connect the outlet of the Flow Compensator to the left side union fitting on the
Dispense Tower. Note: This fitting may be a 1/4” x 5/16” reducing fitting or 5/16” union
fitting depending on the Dispense Tower model.
STILL WATER
CARBONATED WATER
FLOW COMPENSATOR
( ADJUST TO I LITER / 15 SECONDS )
NOTE:
FLOW COMPENSATOR MUST BE
ADJUSTED PER INSTRUCTIONS
FOUND IN SECTION 17.

16Installation and Maintenance Manual
Remote Chiller Model Installation- Connection of the Still Water Tubing.
1. Insert the 5/16” O.D. tubing into the tubing insulation provided.
2. Connect the 5/16” O.D. tubing to the right elbow quick connect fitting on the front of
the unit.
3. Connect the other end of the tubing to the 5/16” Union Fitting on the right side of
the Dispense Tower. Note: This fitting may be a 1/4” x 5/16” reducing fitting or a
5/16” union fitting depending on the Dispense Tower model.
Remote Chiller Model- Connection of CO2gas and Water Supply Line.
1. Connect the 1/4” O.D. CO2tube from the CO2Cylinder Pressure Regulator to the
1/4” elbow fitting at the rear of the unit.
2. Connect the 3/8” O.D. tubing from the Filter Set into the 3/8” elbow fitting at the rear
of the unit.
3. IMPORTANT: INSTALL LOCKING CLIPS TO ALL PUSH TYPE FITTINGS.

17Installation and Maintenance Manual
17. FLOW COMPENSATOR ADJUSTMENT ( FOR REMOTE CHILLER MODEL ONLY )
18. WATER LEAK PROTECTION DEVICE ADJUSTMENT
WATER INLET FROM MAIN
WATER SOURCE.
EXTERNAL RESET TRIGGER
PUSH TO RESET.
WATER OUTLET TO WATER
SHUTOFF VALVE.
WATER LEAK PROTECTION
DEVICE MUST BE INSTALLED
IN THE VERTICAL POSITION
FOR PROPER OPERATION.
SET TO 1,2 OR 3.
DO NOT EXCEED 3
WATER LEAK PROTECTION
ADJUSTMENT KEY.
The CO2water flow has been factory-set to provide
the proper flow rate of approximately 1liter/15 sec.
However, it may be necessary to adjust this in the
field.
To adjust the flow, insert a 6mm Allen wrench into
the adjustment screw of the Compensator Valve.
Turning clockwise, the flow rate will decrease.
Turning counter-clockwise the flow rate will increase.
It is recommended to adjust the valve approximately
½ turn each time. A proper setting is important for
correct carbonation level.
WATER INLET FROM
REMOTE CHILLER
VALVE ADJUSTMENT
PLASTIC SCREW
6MM ALLEN WRENCH
WATER OUTLET TO
CARBONATED
WATER TAP
MOUNTING
BRACKET
IMPORTANT:
PROPER INSTALLATION OF THE
WATER LEAK PROTECTION DEVICE
IS REQUIRED OR WARRANTY WILL
BE VOIDED.
IF NOT INSTALLED PROPERLY
CONSUMER WILL BE RESPOSIBLE
FOR ANY DAMAGES.

18Installation and Maintenance Manual
The Water Leak Protection Device is an overflow safety device that controls the maximum
consumption of water between 5 and 50 liters.
Its function is to measure the volume of water that passes through it. If this volume exceeds
the set value, the Water Leak Protection Device stops the flow and stays in the safety
condition until user intervention.
1. The device should be installed in a vertical orientation directly to the outlet port of the
Braided Hose
2. All connections are the “face seal” type, and should not be over tightened.
3. The device is equipped with a valve adjustment.
4. To adjust the device, separate the two black plastic housings.
5. The adjustment location is on the external threaded end of the main housing.
6. Insert the key provided into the adjustment slot .
7. Turn the key until the valve is set at 1, 2, or 3. Do not exceed 3. This setting controls the
amount of water that is permitted to flow before the device trips and stops the water
flow.
8. Reassemble the two black plastic housings.
Water Leak Protection Device Reset
The Water Leak Protection Device is supplied with a Reset Adapter. This allows you to reset
the device if it has nuisance cycled. For example, filling a stock pot (more than 3 gallons)
without a pause.
To reset, simply push the red Reset Trigger. Due to line pressure, it may require some force to
depress the red Reset Trigger.

19Installation and Maintenance Manual
19. STARTUP PROCEDURE:
1. Remove the two lid screws and the Lid to access the inside of the unit.
2. Make sure that all of the water and CO2connections have been made.
3. Open the Water Shut OffValve and check the system for leaks.
4. Open the Pressure Relief Valve located on the carbonator tank by pushing down on the
Pressure Relief Ring as shown below. Keep it open until water flows from the valve then
close it.
5. Draw 2 gallons of water from each tap to clear the lines and flush the newly installed
filters.
6. Slowly open the CO2Cylinder Valve completely and adjust the pressure at the Cylinder
Regulator with a target of 60 PSI and a maximum of 65 PSI. Check for leaks.
CARBONATOR PRESSURE RELIEF
VALVE (PULL-RING)
FLOW ADJUSTMENT LEVER
ON/OFF SWITCH