Antunes VZN-520H User manual

System Tested and Certied by NSF
International against NSF/ANSI
Standard 42 and 53 for the reduction of:
Standard No. 42: Aesthetic E󰀨ects
Nominal Particulate Reduction Class I
Standard No. 53: Health E󰀨ects
Cyst Reduction & Turbidity Reduction as
veried and substantiated by test data.
®
Owner’s Manual
Original Instructions
Residential Water Filtration
Manufacturing Numbers:
9720002 9720007
VZN-520H VZN-540H
www.antuneswater.com CAUTION: Read all instructions before using the unit.
Original Instructions
P/N 1011586 Rev A 07/20

RESIDENTIAL VZN
2P/N 1011586 Rev A 07/20
®
Contents
Introduction 2
Before Use 2
In Case of Damage 2
Service/Technical Assistance 2
Safety Information 3
Installation 3
Operation 3
Maintenance 3
Service 3
Safety Information (Continued) 4
Specications 5
Performance Data Sheet 6
Filter Cartridge Capacities 6
Performance Claims 6
Overview 7
Manual Flushing 7
Unpacking 8
Equipment Setup 8
General 8
Electrical 8
Plumbing 8
Installation Tools and Supplies 8
Installation 9
Mounting the System 9
Alternative Vertical Mounting 9
Drain Valve Connection 10
System Inlet Connection 11
Permeate Outlet Connection 11
Inlet Water Plumbing 11
Installing a Bypass 12
Starting the Controller 12
Rinsing the UltraFilter Cartridge 12
Sanitizing the System and Lines 13
Maintenance 14
Replacing the UltraFilter Cartridge 14
Changing the Interval Setting 15
Resetting the Timer Program 15
Semi-Annual Task 15
Permeate Tank Air Pre-Charge 15
Troubleshooting 16
Replacement Parts 17
Parts List 17
Exploded View 18
Notes 19
Limited Warranty 20
Introduction
The VZN system is an innovative filtration
system that uses proprietary multi-bore
hollow fiber membranes as well as a
carbon element to provide the latest
innovation in filtration technology.
Before Use
This manual provides the safety,
installation, and operating procedures
for the VZN water filtration system. All
information contained in this manual
should be read prior to installing and
operating the system. Your VZN
system is manufactured from the finest
materials available and is assembled
to strict quality standards. This system
has been tested at the factory to ensure
dependable trouble-free operation.
In Case of Damage
If the unit arrives damaged, contact
Antunes Customer Service at
[phone]. Save all packing
materials when ling a claim.
Service/Technical
Assistance
If there are any problems with the
installation or operation of the unit,
contact Antunes Technical Service at
[phone] (toll free).
Fill in this information and have it handy
when calling for assistance. The serial
number is on the specication plate
located on the unit.
IMPORTANT
Antunes reserves the right to change
specications and product design
without notice. Such revisions DO
NOT entitle the buyer to corresponding
changes, improvements, additions or
replacements for previously purchased
equipment.
IMPORTANT
Keep these instructions for future
reference. If the system changes
ownership, be sure this manual
accompanies the equipment.
Purchased from
Date of purchase
Model number
Serial number
Manufacturing number
Suggested replacement period for
the UltraFilter Cartridge is 3 years
(dependent on water quality).
For sales in the state of Iowa:
Seller
Date
Buyer
Date

RESIDENTIAL VZN
3
P/N 1011586 Rev A 07/20
®
Safety Information
Installation
yRead and understand all
instructions before installing
or using the unit.
yInstall and locate the equipment
only for its intended use as
described in this manual.
yThis equipment is to be
installed to comply with the
local plumbing code and any
other applicable code.
yThis equipment should be
supplied with only cold water.
yWater pressure must not
exceed 100 psig (690 kPa).
To reduce water pressure, install
a water pressure regulator and
set to suit the application.
yThe trans membrane pressure
(inlet pressure minus the
permeate water pressure) must
not exceed 45 psi (310 kPa).
yA ground fault circuit interrupter
(GFCI) must be installed on
the circuit to this system.
yWhen installed on metallic
plumbing, a properly sized
electrical bonding jumper must
be installed across the inlet and
outlet pipes serving this unit.
yFor installations in Massachusetts,
the Commonwealth of
Massachusetts Plumbing Code 248
CMR shall be adhered to. The use
of saddle valves are not permitted.
Please consult your local plumber.
NOTE: If the inlet water pressure is
less than 50 psig (345 kPa),
it is recommended that a
suitably-sized booster system
(outlet pressure 60 psig - 100
psig max (414 kPa - 690 kPa
max) be installed.
WARNING
ELECTRICAL SHOCK HAZARD.
Failure to follow the instructions in
this manual could result in serious
injury or death.
DO NOT modify the power supply
cord plug. If it does not t the outlet,
have a proper outlet installed by a
qualied electrician.
DO NOT use an extension cord with
this unit.
If the supply cord is damaged, it must
be replaced by the manufacturer, its
service agent, or a similarly qualied
person.
All electrical connections must be in
accordance with local electrical codes
and any other applicable codes.
Operation
yDO NOT operate the unit if it has
been damaged or dropped, if
it has a damaged cord or plug,
or if it is not working properly.
yDO NOT block or cover any
openings on the equipment.
yDO NOT immerse the cord,
unit, or power plug in water.
yKeep the cord away from
heated surfaces.
Maintenance
yDO NOT use corrosive
chemicals in this equipment.
yDO NOT clean the unit with a
water jet or steam cleaner.
Service
y Unplug the power cord before
performing any service or
maintenance on the unit.
yIf the supply cord is damaged,
it must be replaced by the
manufacturer, its service agent, or
a similarly qualied person in order
to avoid an electrical hazard.
yThis equipment should be serviced
by qualied personnel only.
Contact Antunes for repair.

RESIDENTIAL VZN
4P/N 1011586 Rev A 07/20
®
Caution
This equipment is to be installed to comply with the
basic plumbing code of the Building O󰀩cials and Code
Administrators, Inc. (BOCA) and the Food Service Sanitation
Manual of the Food and Drug Administration (FDA).
Caution
Water Flow Regulator Assemblies are NOT interchangeable.
Operating the system with the wrong Water Flow Regulator
or without a regulator can damage the system, cause
personal injury, and voids the warranty!
Safety Information (Continued)
Protect from becoming dry
If the membrane dries out, irreversible damage to the UltraFilter
membrane may result. Protect the lter from becoming dry by
keeping it wet and sealed at all times.
Protect from freezing
If the UltraFilter membrane freezes during operation or storage,
irreversible damage to the membrane and brittle cracking of the
cartridge or housing may result.
Protect from direct sunlight or other UV sources
Avoid long-term exposure to direct sunlight or other UV
sources. The UltraFilter should be stored in a dark location.
Protect from high temperatures or abrupt variation in
temperature
The maximum operating temperature is 100°F (38°C). Avoid abrupt
variations in temperature. Any temperature variation should be
made slowly.
Protect from rough handling or dropping
Mechanical damage, external breakage, and/or internal breakage of
the lter can result if the system is dropped or bumped. Handle with
care at all times during transportation and installation.
Protect from organic solvents and concentrated acids
Prevent any and all contact of the membrane with strong solvents,
solvents containing chlorine, or concentrated acids. DO NOT use strong solvents
or concentrated acids on any plastic parts of the lter system. Examples of some
solvents to avoid: acetone, methyl acetate (nail polish remover); hexane (spot
removers); turpentine, toluene (paint thinners); dry cleaning solutions, insecticides.
Protect from abrasive material
The membranes must be protected from abrasive materials like shavings left in a pipe.
Abrasive materials in contact with the membrane can cause irreversible damage to the
membrane. All pipes must be ushed clean before installing the lter. All plastic parts
of the lter system must be protected from sharp objects like knives, sand paper, or
other tools. Cutting or nicking a plastic part can weaken it and cause a leak. DO NOT
use abrasive cleansers on any plastic parts.
Protect from water hammer
The system must be protected from shock, pressure surges, or pulsation that may
occur inside water pipes. Water hammer occurs in pipes when a valve or faucet shuts
quickly. Install a water hammer arrestor (pressure vessel containing compressed air
separated from the water by a diaphragm) to reduce pressure shock.
Caution
All electrical connections must be in accordance with local
electrical codes and any other applicable codes.
A ground fault circuit interrupter (GFCI) must be installed on
the circuit to this system.
When installed on metallic plumbing, a properly sized
electrical bonding jumper must be installed across the inlet
and outlet pipes serving this unit.

RESIDENTIAL VZN
5
P/N 1011586 Rev A 07/20
®
Specications
System Dimensions
Model Width (A) Depth (B) Height (C)
VZN-520H 31"
(79 cm)
9"
(23 cm)
39"
(99 cm)
VZN-540H 50"
(127 cm)
9"
(23 cm)
39"
(99 cm)
Model Drainmustaccommodateowupto:
VZN-520H 8 gpm
VZN-540H 15 gpm
Electrical Ratings
Volts Watts Amps Hertz
100-240 10 .08 50/60
ElectricalCord&PlugCongurations
Kit Model Number/
Description Conguration
Kit 0012146
DC Power Supply
100 - 240 VAC
(Includes the 4 plug adaptors below)
US
NEMA 1-15 (2 pin)
or NEMA 5-15
(3 Pin)
Euro
CEE 7/16
AS/NZS
3112
AUS
(2 Pin)
UK
BS 1363
NOTE: Includes plug adaptors for US, Europe,
Australia, and UK.
NOTE: PLUG STYLE
MAY VA RY
US
NEMA 1-15 (2 PIN)
or NEMA 5-15
(3 PIN)
EURO
CEE 7/16
AS/NZS 3112
(2 PIN)
AUS
BS 1363
UKUK
Replacement Cartridges
Model Ultralter
VZN-520H 7010003 20" UltraFilter Cartridge Kit
VZN-540H 7010002 40" UltraFilter Cartridge Kit

RESIDENTIAL VZN
6P/N 1011586 Rev A 07/20
®
Performance Claims for Percent Reduction
Substance Inuent
Challenge
Concentration
Reduction
Requirement
Minimum
%
Reduction
cyst1Minimum
50,000/L
99.95% 99.95%
Turbidity 11 ± 1 NTU ≤ 0.5 NTU 99.1%
Particulate Class I
Particles 0.5 to <
1µm
At least 10,000
particles /mL
≥ 85% 99.5%
1based on the use of microspheres or Cryptosporium parvum oocysts
NOTE: The NSF information provided applies to the
UltraFilter cartridge.
This system has been tested according to NSF/ANSI Standard
42 and 53 for reduction of the substances listed below. The
concentration of the indicated substances in water entering the
system was reduced to a concentration less than or equal to
the permissible limit for water leaving the system, as specied
in NSF/ANSI 42 or 53. While testing was performed under
standard laboratory conditions, actual performance may vary.
DO NOT use with water that is microbiologically unsafe or of
unknown quality without adequate disinfection before or after
the system. Systems certied for cyst reduction may be used
on disinfected waters that may contain lterable cysts.
Performance Data Sheet
Filter Cartridge Capacities
Maximum Operating Pressure 100 psig (690 kPa)
Maximum Operating Temperature 100°F (38°C)
Minimum Operating Temperature 40°F (4°C)
Maximum Trans Membrane Pressure 45 PSI (3.1 Bar)
pH Range 3-10
MWCO 100 kD
NSF Certied Rated Service Flow:
VZN-520H 7.9 gpm (30 l/m)
VZN-540H 13 gpm (49 l/m)
System Tested and Certied by
NSF International against NSF/ANSI
Standard 42 and 53 for the reduction of:
Standard No. 42: Aesthetic E󰀨ects
Nominal Particulate Reduction Class I
Standard No. 53: Health E󰀨ects
Cyst Reduction & Turbidity Reduction
as veried and substantiated by test data.

RESIDENTIAL VZN
7
P/N 1011586 Rev A 07/20
®
Figure 1. System Components Horizontal Units
Overview
The VZN system operates in two
modes:
yNormal Operation Mode
yFlush Mode
During Normal Operation Mode,
water enters the Inlet and ows
through the UltraFilter before exiting
the Permeate Outlet as usable
product water.
During Flush Mode, the Drain Valve
opens and water entering the Inlet
ushes and cleans the UltraFilter
membrane by removing any debris
collecting on the membrane wall.
The Drain Valve is only powered
during Flush Mode.
NOTE: DO NOT unplug the power
cordorturno󰀨thesystem
during Flush Mode. If
there is a power outage or
the system is unplugged,
water will continue to be
lteredbutthesystem
willNOTush.Thiscould
cause the UltraFilter to
plug prematurely and may
reducethelifeofthelter.
Manual Flushing
A manual ush can be activated at
any time by pressing the FLUSH
button on the Universal Pulse
Controller.
When the FLUSH button is pressed,
the Flush LED on the controller
ashes and the Drain Valve opens
for 10 seconds. After ushing is
complete, the Drain Valve will close,
the Flush LED will stop ashing and
the unit will automatically return to
Normal Operation Mode.
NOTE:Amanualushwillnot
a󰀨ecttheintervalushsetting.
Caution
Changing the ush interval can cause
the UltraFilter to plug prematurely and
may reduce the life of the lter. Consult
the factory for more information.
Inlet Ball
Valve
(Manual)
Ultra
Filtration
Cartridge
System Flush
Solenoid Valve
(Automatic)

RESIDENTIAL VZN
8P/N 1011586 Rev A 07/20
®
Unpacking
1. Open the large box. It should
contain:
A. Panel mounted VZN system with
an UltraFilter Cartridge installed.
B. Padded envelope containing:
yPower Adaptor
yOwner’s Manual
yMounting Bracket
yFilter Wrench
yGlove and Sticker Kit
2. Remove all packing materials
and protective coverings from the
system.
3. Remove the information packet. Fill
out and mail the
warranty card immediately to prevent
any delay in obtaining warranty
coverage.
NOTE: If any parts are damaged,
contact Antunes IMMEDIATELY
at [phone].
Equipment Setup
General
When placing the system into service, pay attention to the following guidelines:
yDO NOT immerse cord or power plug in water
yKeep cord away from heated surfaces.
Electrical
The line voltage must match the voltage on the specication label. The plug on the
power cord must match the appropriate outlet. DO NOT connect the system to a
switched electrical outlet.
Plumbing
NOTE: The system must be connected to the COLD water line. DO NOT connect
the system to the hot water line.
The VZN system uses the following connections:
System Inlet 3/4" FNPT
System Outlet
(Product Water) 3/4" FNPT
Drain 3/4" FNPT
When making a plumbing connection to the system, use a back-up wrench on the
supporting plumbing. Always use a quality, approved pipe sealant or thread seal tape
on pipe threads. DO NOT allow pipe sealant inside pipes.
DO NOT over tighten the connections. Use plastic ttings when connecting to the
plastic connections of the system.
If soldered plumbing is used, DO NOT apply heat to, or near, the ltration system. Use
union (O-Ring seal) connections for ease of installation and future servicing.
Suggested Tools and Supplies for Installation
The following tools and supplies are suggested to help with the installation:
yScrewdriver yAdjustable Wrenches
yDrill with Bits yLevel
yTape Measure yPipe Dope or Thread Seal Tape
yTwo Gallon Bucket yHose or pipe for drain line
yPipe Wrenches yGarden Hose (for rinsing)
yFresh, Unscented
Liquid Chlorine Bleach

RESIDENTIAL VZN
9
P/N 1011586 Rev A 07/20
®
Installation
Mounting the System
NOTE: Use caution when lifting and
mounting the system. The
system MUST be mounted
using the provided Mounting
Bracket.
The VZN system comes with a Mounting
Bracket. When mounting the system, pay
attention to the following guidelines:
yAllow su󰀩cient access for cartridge
replacement. The VZN-520H
system should be mounted with
23 inches to the left or right of the
system. The VZN-540H system
should be mounted with 43 inches
to the left or right of the system
yMount the system near but
NOT above an appropriate
electrical outlet.
yMount the system near a drain
for ushing operations.
yMount the system before all
consumable water
ltration processes.
ySecure the Mounting Bracket
provided with the VZN system
into wall studs with heavy duty
hardware capable of supporting
120lbs. Or more (Mounting
Hardware Not Supplied).
yMount the VZN system to the
Mounting Bracket and secure with
heavy duty hardware (Mounting
Hardware Not Supplied).
The system is pre-assembled to a Back
Panel. The Back Panel has mounting
holes across the bottom portion to secure
the bottom of the system to the wall.
Some of the bottom mounting holes
may be obscured. Plan your mounting
accordingly.
Follow these steps to secure the
Mounting Bracket to the wall and seat the
VZN system:
1. Use a stud nder and level to attach
the Mounting Bracket securely to the
wall with the appropriate mounting
hardware (Figure 2).
2. The Mounting Bracket is designed
so that the VZN system can be lifted
and hung on the Mounting Bracket.
With assistance, lift the system and
seat it onto the Mounting Bracket
securely (Figure 2).
3. After mounting the VZN system to
the Mounting Bracket, secure the
VZN system to the wall using the
mounting holes provided on the
lower portion of the VZN system
back panel.
Alternative Vertical Mounting
The system can be mounted vertically if
required. See Figure 2A for more details.
Note the following when mounting a
system vertically.
1. Install the Mounting Bracket
horizontally as shown in Figures 2
and 2A.
2. The system must be mounted so the
Solenoid Valve is located at the TOP
(Figure 2A).
3. Allow su󰀩cient access for cartridge
replacement. VZN-420 units should
be mounted with 20 inches above
or below. VZN-440 units should be
mounted with 40 inches above or
below.
Figure 2. Mounting the System
A
32
31
31
20
28
36
21
22
23
35
23
22 21
39
39
39
39
39
3239
39
INLET ENDCAP ASSEMBLY
43
DETAIL A
SCALE 1 : 2
SEE DETAIL "B"
FOR INSTALLATION
DETAIL OF ITEMS
21, 22, AND 23
20
28
36
21
22
21
22
23
39
39
NOTE ORIENTATION
OF ITEM 28 PRIOR TO
INSTALLATION INTO
ITEM 20
23 43
B
32 32 31
31
20
21
22
23 34 12
21
22
23
39 39 39
39
39
37 38
39
DRAIN ENDCAP ASSEMBLY
5. INSTALL ITEMS 21, 22, AND 23
INTO PORT 1 OF ITEM 20.
6. INSTALL ITEMS 21, 22, AND 23
INTO PORT 2 OF ITEM 20.
7. ATTACH ITEM34 TO ITEM 12 BEFORE
INSTALLING INTO PORT 1 OF ITEM 20.
43
DETAIL B
SCALE 1 : 2
20
21
22
23
34
21
22
23
39
39
39
ITEM 21 STEP 1:
PRESS O-RING INTO
PLACE AGAINST STEP
ITEM 22 STEP 2:
PRESS O-RING GUIDE WITH
THE BEVEL FACING OUTWARDS
ITEM 23 STEP 3:
SNAP COLLET INTO
PLACE
43
NOTES:
1. ASSEMBLE PARTS AS SHOWN.
2. APPLY PIPE TAPE ITEM 39 AND THREAD SEALING
COMPOUND ITEM 38 TO ALL PIPE THREADS AS NOTED.
3. APPLY LUBRICANT ITEM 40 TO ALL O-RINGS. ENSURE
ALL ARE SUFFICIENTLY GREASED.
4. MAKE SURE END CAPS ITEM 20 (2X) ARE ATTACHED TO
HOUSING ITEM 19 BEFORE ATTACHING HOUSING ASSEMBLY
ITEM 19 TO BACK PLATE ITEM 1.
C1
C2
D1
REV DATE PCO NO. DESCRIPTION BY
D 06/11/20 PC-14371 D1 ADD ITEM 43 & D2 ADD NOTES RC
C 11/25/19 PC-14371 C1 WAS 3250103; C2 QUANTITY WAS 4 EA RC
ITEM PART NO DESCRIPTION QTY.
1 0509346 BACKPLATE, VZN 520/540, HORIZ 1
22180215
TANK-EXPANSION, 2.1 GAL WITH 3/4 NPT 1
30400381
GROMMET, 1.75OD X 1.187 ID 1
42190158
FEMALE CONNECTOR, 3/4 CTS X 3/4 NPS 1
50012357
UNIVERSAL PULSE CONTROLLER ASSY 1
62010199
TUBING, BENT, 90 DEGREE 1
72180287 CLAMP, UFL HOUSING 2
8 3000116
NUT RETAINER - 1/4"-20 4
9 3250195
SCREW, HEX CAP 1/4-20 X 7/8" 4
10 3250154 WASHER, Ø1/4" HELICAL SPRING LOCK 4
11 3250104 WASHER, FLAT - 1/4" 4
12 4040189 VALVE, SOL NC, 24VDC, 3/4 NPT 1
13 2010247 TUBING, PEX-B, 3/4" CTS, 180°, 4.53" X 3.843 2
14 2190155 UNION TEE, 3/4" CTS 2
15 2010246 TUBING, PEX-B, 3/4" CTS, 19.72" STRAIGHT 1
16 4060438 CABLE TIE 36" BLACK 2
17 2120286 SPACER, RUBBER, 4" SS UF HOUSING 2
18 3000132 NUT, CAGE, 8-32, ZP STEEL 2
19 0508910 HOUSING, 4 DIA x 20"L, SS 304, UF 1
20 2180560 CAP, NORYL, 3/4 PEX X 3/4 PEX, 4" DIA SS HSG 2
21 0200283 O-RING, 21MM ID X 4MM W, EPDM 70, RND 4
22 2180278 O-RING GUIDE, 3/4" CTS 4
23 2180279 COLLET, 3/4" CTS 4
24 8000057 BOLT, M8x1.25x35mm, HEX, 18-8 SS 4
25 8000059 WASHER, FLAT, M8, 8.4 ID x 16 OD x 1.6 D 4
26 8000058 NUT, M8 x 1.25 x 6.5mm, 18-8 SS 4
27 2120285 SPACER, 5/8 OD X 3/8 ID X 1/2 D 4
28 2170140 REGULATOR, FLOW 7.9 GPM 1
29 2110217 CLAMP, 304 SS, 4" SS UF HOUSING ENDCAP 4
30 3080120 SCREW, MACH. #8-32 x 5/8" 2
31 0200432 O-RING, AS568 2-342, EPDM 70 4
32 0200236 O-RING, CARTRIDGE 4
33 0700769 WIRE HARNESS, GAP-421 VALVE 1
34 2190210 FITTING, 3/4 MPT X 3/4 CTS STEM, JG 2
35 2170173 VALVE, BALL, 3/4 CTS X 3/4 FPT, BLACK, PLASTIC 1
36 2180575 BUSHING, PVC, .906 OD X .656 ID X .218 L 1
37 2140163 THREAD SEALING COMPOUND, (RECTORSEAL) 1
38 2140144 TAPE, PIPE THREAD 1
39 2140153 LUBRICANT, DOW CORNING, HIGH-VACUUM GREASE 1
40 4060173 CABLE TIE(.100x4-3/16) 1
41 1200168 ASSY/TEST PROCEDURE GAP 1
42 0200476 GASKET, VZN-5XX UF HSG, CLAMP BRACKET 2
43 2190304 COLLET CLIP, 3/4 CTS 4
D
C
B
A
B
C
D
1 2 3
4 5
6
7
8
8
7
6
5
4
3
2
1
E
F
E
F
A
ALL DIMENSIONS: INCH [mm]
TOLERANCES:
FRACTIONS
1/32" [.8mm]
DECIMAL
.xx
.01" [.25mm]
.xxx
.005" [.125mm]
ANGULAR:
1
MATERIAL SPECIFICATION:
DRAWN BY:
DATE:
PART DESCRIPTION:
SIZE:
C
PART NUMBER:
REV:
SHEET 1 OF 2
1:4
UNLESS OTHERWISE SPECIFIED:
8/1/2018
RDB
0013992
SEE BOM
MAIN ASSY, VZN 520H
D
THE INFORMATION AND DESIGNS CONTAINED IN THIS DRAWING ARE CONFIDENTIAL AND THE
PROPRIETARY PROPERTY OF A.J. ANTUNES & CO. NEITHER THIS DESIGN NOR ANY INFORMATION
CONTAINED HEREIN MAY BE REPRODUCED OR DISCLOSED TO OTHERS WITHOUT THE EXPRESS
WRITTEN CONSENT OF A.J. ANTUNES & CO.
SCALE:
DATE:
APVD BY:
INTERPRET DIMENSIONS AND
TOLERANCES PER ASME Y14.5-2009
NO BURRS ALLOWED
BREAK ALL SHARP CORNERS
THIRD ANGLE
PROJECTION
DO NOT
SCALE
DRAWING
180 KEHOE BLVD, CAROL STREAM, IL 60188
ISO COMPLIANT COMPANY
Back Plate
(holes along bottom for
additional mounting stability)
Back Plate
(holes along right
for additional
mounting stability)
Solenoid Valve
at Top
Mounting
Holes
Secure Mounting Bracket
to wall studs using
appropriate hardware.
The system is
designed to hang
from the Mounting
Bracket.
The system is
designed to hang
from the Mounting
Bracket.
Secure Mounting
Bracket to wall studs
using appropriate
hardware.
Caution
Due to its weight and size, the
VZN system MUST be mounted
with the provided Mounting
Bracket. Read the Mounting
the System section before
attempting to mount the VZN
system. Use care when lifting
heavy objects.
4. With assistance, lift the system and
seat it securely onto the Mounting
Bracket vertically (Figure 2A).
5. When mounted vertically, the back
plate has mounting holes across the
right portion to secure the right side
of the system to the wall.
Figure 2A. Vertical Mounting

RESIDENTIAL VZN
10 P/N 1011586 Rev A 07/20
®
2” (5.1 cm)
minimum
2” (5.1 cm)
minimum
Floor
Drain
Secure
End
Drain Line from
System
Drain Line from
System
Secure
End
Drain
Standpipe
Figure 3. Drain Valve Connection
Drain Valve Connection
The drain is for ushing particle buildup
out of the system during self cleaning.
1. Cut a length of tubing (not supplied)
so it reaches the drain from the Drain
Valve.
2. Connect one end of the hose to
the Drain Valve with an appropriate
tting (not supplied) (Figure 3).
3. Direct the other end of the hose
to the drain (Figure 4). For hard
plumbed drain lines the use
of an O-Ring sealed union is
recommended (not supplied).
When connecting the drain hose, pay
attention to the following guidelines:
yThe drain line plumbing must
be able support the ow rate
whenever the system ushes. This
ow rate is dependent on the inlet
water pressure, inlet pipe size, and
system.
yThe drain line leading out of
the system must be as short as
possible and slope downwards
without any kinks or loops.
yThe drain line plumbing must be
positioned and secured at least 2
inches above the drain (Figure 4).
This air gap protects the system
from contamination in the event of
a backed-up drain.
yThe drain used must not be
blocked or restricted.
yThe drain used must be as large or
larger than the drain line plumbing.
Figure 4. Drain Line Plumbing

RESIDENTIAL VZN
11
P/N 1011586 Rev A 07/20
®
Figure 5. Inlet and Outlet Connections
System Inlet Connection
The System Inlet has a 3/4” FNPT thread at the Inlet Valve
(Figure 5). DO NOT overtighten ttings as this could cause the
plastic ball valve to crack.
Use plastic ttings and a pipe thread sealant approved for use
on PVC ttings when making connections.
Filtered Water Permeate Outlet Connection
The System Outlet has a 3/4” NPT thread at the Outlet (Figure
5). DO NOT overtighten ttings as this could cause the plastic
to crack.
Use plastic ttings and a pipe thread sealant approved for use
on PVC ttings when making connections.
Inlet Water Plumbing
Before connecting the tting to the System Inlet, the plumbing
to the system must be ushed clear of all debris. Hold a
bucket at the inlet water line and slowly open the Inlet Water
Valve. Allow the pipe to ush until all debris is removed.
Inlet Ball
Valve
(Manual)
Outlet

RESIDENTIAL VZN
12 P/N 1011586 Rev A 07/20
®
Water
Flow
Water
Flow
Figure 6. Install Bypass
Installing a Bypass
( Not Supplied)
It is recommended that an optional bypass be installed to help
with replacing cartridges and servicing the system.
1. Install a ball valve on the outlet of the system, and install
tees on the plumbing leading to the Inlet and Outlet Ball
Valves.
2. Connect the two tees by installing plumbing and a fully
ported (preferably 3/4”) Ball Valve.
3. When the system is in use, open the Inlet and Outlet Ball
Valves and close the Bypass Ball Valve.
4. When servicing is needed, close the Inlet and Outlet Ball
Valves and open the Bypass Ball Valve.
Starting the Controller
1. Select the proper AC plug for your electrical outlet and
install it onto the power supply.
2. Plug the appropriate end of the power cord into the
controller.
3. Plug the other end of the power cord into the electrical
outlet. The LEDs on the controller will light up.
4. The controller automatically enters Flush Mode and the
Flush LED starts to ash.
5. When ushing is complete, the Flush LED will stop
ashing and one or more LEDs will remain lit, indicating
the unit has power and which interval is selected in the
controller.
Rinsing the UltraFilter Cartridge
The UltraFilter Cartridge comes pre-installed in the VZN
system. The UltraFilter Cartridge must be rinsed before the
system is used to remove any air and protective solution.
NOTE: UltraFilter Cartridge must be rinsed to drain before
use. Rinsing to drain removes storage solution
and air. DO NOT rinse into carbon if present.
Carbonlifeand/orperformancemaybea󰀨ected.
1. Close the Inlet Ball Valve.
2. Direct water from the outlet to a drain.
3. Open the Outlet Ball Valve (if installed.
4. Slowly open the Inlet Ball Valve. Air and water will come
out.
5. Press the FLUSH button. The Drain Valve will open and
air and water will come out of the drain line. Repeat six
times to ensure all air and storage solution are ushed out
of the UltraFilter Cartridge.
6. Continue to allow water to run at full ow out of the Outlet
Ball Valve for at least 15 minutes.
7. After 15 minutes, close the Outlet Ball Valve and allow
the system to sit for 15 minutes without any water ow to
release any trapped air from the UltraFilter Cartridge.
8. Inspect the unit for any leaks, repairing as needed.
9. After 15 minutes, open the Outlet Ball Valve and wait for
15 more minutes to ush out any remaining air.
10. Close the Outlet Ball Valve.
11. Press the FLUSH button to open the Drain Valve. Repeat
six times to ensure any remaining air is ushed out of the
system.
12. Open the closest downstream tap or faucet.
13. Slowly open the Outlet Ball Valve and allow water to run
through the system and out the faucet for ve minutes.
IMPORTANT
DO NOT consume water used during this process.

RESIDENTIAL VZN
13
P/N 1011586 Rev A 07/20
®
Sanitizing the System and Lines
The plumbing must be sanitized to eliminate possible
contamination that may have occurred during the installation
process.
One ounce (30 ml) of liquid chlorine bleach (regular bleach,
unscented 5.25 % - 6 % sodium hypochlorite) or Kay-5 sanitizer
solution (Sodium Dichloro-s-Triazinetrione Dihydrate, 6%) or
equivalent can be used to sanitize the plumbing.
The Kay-5 sanitizer solution is made by dissolving a 1 oz. packet
of Kay-5 powder in 2 oz. (60 ml) of clean warm water. This can
be done by removing 1 inch from the top of the Kay-5 packet and
adding the 2 oz. of warm water to the packet. Mix with a co󰀨ee
stirrer to dissolve. When added to the system, this will create a
60-100 ppm chlorine solution.
NOTE: Follow the handling and safety instructions
supplied with the sanitizer.
NOTE: Sanitizing kit is NOT supplied.
1. Follow the steps in the Rinsing the UltraFilter Cartridge in
the Installation section of this manual.
2. Turn o󰀨 the water to the system.
3. Open the faucet or tap closest downstream to the
system.
4. Allow the system and plumbing to drain.
5. Allow the water to drain out of the system.
6. Pour the sanitizer into the water line supplying the system
tting using a cup or funnel. Be sure to wear protective gear
and be careful not to spill the sanitizer onto clothing or skin.
7. Slowly turn on the water supply to the system.
8. Allow water to ow through the system and out of the open
faucet or tap until the smell of sanitizer is present.
9. Close the faucet or tap.
10. Let the system stand without water ow for at least 15
minutes to allow the sanitizer to sanitize the pipes.
11. After 15 minutes without water ow, open the faucet or tap.
12. Allow water to ow through the system until the
presence of sanitizer is gone.
13. Open all other faucets and taps in line with the system to
ush any remaining sanitizer from the plumbing.
14. Close all faucets and taps.

RESIDENTIAL VZN
14 P/N 1011586 Rev A 07/20
®
Maintenance
Replacing the UltraFilter Cartridge
NOTE: Water may drain from the tubing as it is removed.
Make sure there is enough room around the
system to remove the cartridge.
1. Turn o󰀨 water to the system by closing the Inlet Ball Valve
and Outlet Ball Valve.
2. Press the FLUSH button to ush the system and relieve
system pressure. Repeat several times to ensure
permeate tank is empty.
3. Remove either End Cap clamp hardware from the
UltraFilter Housing. (Figure 7)
4. Locate the permeate 180° bent tubing on the UltraFilter
Housing and disconnect the long end from the tee by
pushing the collet squarely against the face of the tting.
5. With the collet pushed in place on the tee tting, pull the
tubing from the tee tting with your hand.
6. Remove the End Cap (Figure 7) from the UltraFilter
Housing.
NOTE: If the Cartridge does not easily come out of
the Housing, remove the opposite End Cap for
assistance.
7. Inspect the End Cap O-Rings and Cartridge O-rings for
nicks or cuts. Replace as needed.
8. Record the serial number of the new cartridge. The
cartridge serial number is engraved on one end of the
outer tube (for example: 05K 12013).
9. Lubricate all O-rings with a food-grade silicone lubricant.
Apply a light coating of lubricant to the inside center tube
at both ends of the new cartridge.
10. Position the new cartridge into the housing and gently
insert into the housing.
11. Ensure the cartridge is fully seated on the opposite end
cap.
12. Press the End Cap into position until it is fully seated.
13. Install the UltraFilter Housing clamp and hardware.
NOTE: Ensure all of the UltraFilter Housing clamp
hardware is properly secured.
14. Reattach the tubing that was removed in steps 5 and 6.
15. Rinse the new UltraFilter Cartridge before placing the
system back into operation. Follow the Rinsing the
UltraFilter Cartridge, Sanitizing the System and Lines, and
procedures in the Installation section of this manual to
complete the cartridge change.
16. When rinsing is complete, repressurize the system by
opening the Outlet Ball Valve then opening the Inlet Ball
Valve.
Figure 7. Replacing the UltraFilter Cartridge
End Cap
Clamps
UltraFilter
Housing
UltraFilter
Cartridge
End Cap
O-Rings
End Cap
End Cap
Clamps
End Cap
End Cap
O-Rings
Cartridge
O-Rings
Cartridge
O-Rings

RESIDENTIAL VZN
15
P/N 1011586 Rev A 07/20
®
Changing the Interval Setting
Caution
Changing the ush interval can cause the UltraFilter to plug
prematurely and may reduce the life of the lter. Consult the
factory for more information.
Though not recommended, the interval setting on the
Universal Pulse Controller can be changed. If the setting
must be changed, use the chart below. Press and hold the
corresponding button. After 5 seconds, the Button LED will
turn on. After 10 seconds, the Flush LED will also turn on.
Resetting the Timer Program
During the normal operation, the system will ush according
to the set interval. It is possible the system will ush at a time
of high water use. If this poses a problem, the controller can
be reset. Unplug the power supply, wait for 5 seconds, and
then plug the power supply in. When power is restored to the
controller, it will automatically enter Flush Mode. The controller
will then begin timing from the point when power is restored
based on the interval setting selected.
Flush
Interval Button Hold Time Button LED
Flush
LED
15 minutes A 10 seconds On On
30 minutes B 10 seconds On On
45 minutes C 10 seconds On On
1 hour A 5 seconds On O󰀨
4 hour B 5 seconds On O󰀨
6 hours C 5 seconds On O󰀨
12 hours D 5 seconds On O󰀨
24 hours D 10 seconds On On
Figure 8. Universal Pulse Controller
Semi-Annual Task
Check Permeate Tank Air Pre-Charge
It is recommended the permeate tank air charge be checked
every six months.
Caution
Air pre-charge should only be checked and adjusted under
zero system pressure. The system must be depressurized
before checking the tank pre-charge. DO NOT adjust the
tank air pre-charge with the system under pressure.
Caution
Be careful when adding air to the tank. DO NOT add too
much air pressure to the tank.
Tools and supplies required:
yAir Pressure Gauge, 5-40 psi range (0.3-2.7 bar)
with tire valve (Schrader Valve) connection
ySource of compressed air (manual
bicycle tire pump or air compressor)
1. Refer to Figure 1. Depressurize the system by closing
the Inlet and Outlet Valves and opening the Rinse Valve.
Make sure the Permeate Tank is fully drained.
2. Unscrew the protective cap from the air valve on the tank.
3. Use the pressure gauge to check the tank pre-charge for
pressure.
NOTE: If any water comes out the air valve, the tank
bladder has ruptured and the tank needs to be
replaced.
4. The permeate tank should have a pressure of 28-31 PSI.
yTo add pressure to the permeate tank,
use a manual bicycle tire pump or
other source of compressed air.
yTo release pressure from the permeate tank,
press the center pin on the air inlet valve.
5. Once the permeate tank is at 28-31 PSI, replace the
protective cap on the air valve.
6. Pressurize system by closing the Rinse Valve and
opening the Inlet and Outlet Valves.

RESIDENTIAL VZN
16 P/N 1011586 Rev A 07/20
®
Problem Possible Cause Corrective Action
Unit does not have power.
The power cord is not plugged into the
appropriate outlet or control box. Plug power cord into the appropriate outlet.
The unit is plugged into a switched
electrical outlet. Plug the power cord into an unswitched outlet.
Universal Pulse Controller is inoperable. Contact your maintenance person or Authorized
Service Agency.
Transformer is defective.
No water comes out of the
lter system.
Inlet/Outlet Ball Valves closed. Open the Inlet/Outlet Ball Valves.
System depressurized. Pressurize system.
Drain Valve is stuck open. Clean, rebuild, and/or replace the Drain Valve.
Rinse Ball Valve is open. Close the Rinse Ball Valve.
The system may be in a ush cycle. Wait for the ush cycle to end.
Inlet Strainer (if installed) is plugged. Clean or replace Inlet Strainer
UltraFilter Cartridge is plugged. Replace UltraFilter Cartridge.
Low water ow comes out of the
lter system.
See above. See above.
The inlet water pressure is too low. Boost the inlet water pressure.
The outlet check valve may be plugged
or defective.
Clean or replace the outlet check valve
assembly.
The inlet ow restrictor may be plugged. Clean or replace the inlet ow restrictor.
Water tastes bad.
Storage/shipping solution not completely
rinsed out of the system.
Rinse the system for a longer period of time;
replace Carbon Element.
Biological growth in pipes. Sanitize plumbing.
Water condition changed. Consider installing additional ltration.
Broken capillaries in UltraFilter Cartridge. Replace UltraFilter Cartridge.
Flush runs continuously.
Drain Valve stuck open. Clean, rebuild, or replace the Drain Valve.
Controller sending continuous signals to
valve. Replace the controller.
Water splashes at drain during
ush.
Drain line not positioned properly. Reposition the end of the drain line.
Drain not capable of handling high ow
rate. Clean drain; nd alternate drain.
Water leaks at ends of the
UltraFilter cartridge after changing
cartridge.
O-rings are not lubricated. Lubricate O-rings with food grade lubricant.
O-rings are split, cut, or twisted. Replace O-rings.
UltraFilter Housing clamps and hardware
not properly secured Tighten UltraFilter Housing Clamps or replace.
Water leaks from system
tting or connection.
Fitting broken or loose. Tighten or replace the tting.
Not enough pipe thread sealant used. Redo the tting with the proper amount of
sealant.
Troubleshooting

RESIDENTIAL VZN
17
P/N 1011586 Rev A 07/20
®
Replacement Parts
Item
No. Part # Description Qty.
1 0509346 Backplate, VZN 520/540, HORIZ 1
22180215 Tank-Expansion, 2.1 Gal with 3/4
NPT
1
30400381 Grommet, 1.75OD X 1.187ID 1
42190158 Female Connector, 3/4 CTS x 3/4
NPS
1
50012357 Universal Pulse Controller Assy 1
62010199 Tubing, Bent, 90 Degree 1
77002016 Clamp Kit, UFL Housing 2
83000116 Nut Retainer - 1/4"-20 4
94040189 Valve, SOL NC, 24DC, 3/4 NPT 1
10
2010247 Tubing, PEX-B, 3/4" CTS, 180°,
4.53" X 3.843
2
2010245 Tubing, PEX-B, 180°, 4.53" X 13.25 2
11 2190155 Union Tee, 3/4" CTS 2
12 2010246 Tubing, PEX-B, 3/4" CTS, 19.72"
Straight
1
13 4060438 Cable Tie 36" Black 2
14 7002017 Rubber Cradle Kit 2
15 3000132 Nut, Cage, 8/32, ZP Steel 2
16 0508910 Housing, 4 DIA X 20"L, SS 304, UF 1
0508919 Housing, 4 DIA x 40"L, SS 304, UF 1
17 7002014 VZN/UFL Drain Endcap Kit 1
18 7002015 Clamp Kit, Endcap 2
19 7001914 SS Housing O-Ring Kit 2
20 0700769 Wire Harness, GAP-421 Valve (Not
Shown)
1
21 2190210 Fitting, 3/4 MPT X 3/4 CTS STEM,
JG
2
22 2170173 Valve, Ball, 3/4 CTS X 3/4 FPT,
Black, Plastic
1
23 7002025 VZN-5 8GPM Endcap Kit 1
7002024 VZN-5 15GPM Endcap Kit 1
24 4060173 Cable Tie (.100x4-3/16) 1
25 7010003 20" UltraFilter Cartridge Kit 1
7010002 40" UltraFilter Cartridge Kit 1
26 2190304 Collet Clip 4
NOTICE
Use only genuine Antunes replacement parts in this unit.
Use of parts other than those supplied by the manufacturer
will void the warranty.
Parts List
(See Exploded Views for more information)

RESIDENTIAL VZN
18 P/N 1011586 Rev A 07/20
®
Exploded View VZN-520H and VZN-540H Systems
8
15
88
15
8
3
1
2
13
5
14
4
6
10
25
11
12
21
11
10
18
24
13
14
7
7
19
22
23
18
17
19
16
21
9
26
26
26
26

RESIDENTIAL VZN
19
P/N 1011586 Rev A 07/20
®
Notes

Warranty
Equipment manufactured by Antunes has been constructed of the finest materials available and manufactured to high
quality standards. These units are warranted to be free from defects in materials and workmanship for a period of
one year from date of purchase under normal use and service, and when installed in accordance with manufacturer’s
recommendations*.
*To ensure continued proper operation of the units, follow the maintenance procedure outlined in the Owner’s Manual.
1. This warranty does not cover failures due to improper system installation, defects caused by improper storage
or handling prior to placing of the equipment into service.
2. Antunes reserves the right to make changes in design or add any improvements on any product. The right
is always reserved to modify equipment because of factors beyond our control and government regulations.
Changes to update equipment DO NOT constitute a warranty charge.
3. THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, EACH OF WHICH IS HEREBY EXPRESSLY DISCLAIMED. THE REMEDIES
DESCRIBED ABOVE ARE EXCLUSIVE AND IN NO EVENT SHALL ANTUNES BE LIABLE FOR SPECIAL
CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR THE BREACH OR DELAY IN PERFORMANCE OF
THIS WARRANTY.
4. Prices and specifications are subject to change without notice.
www.antuneswater.com