Brita Redi-Twist USS-335 User manual

USS-335
Installation
Instructions
CONNECT TO
AUXILIARY FAUCET
USF-201 post filter is tested and certified by NSF International in
USS-335 system against NSF/ANSI Standard 42 for the reduction of
Aesthetic ChlorineTaste and Odor and Particulate Class III. USS-335
system is tested and certified by NSF International against NSF/
ANSI Standard 58 for the reduction of Cysts, Pentavalent Arsenic,
Barium, Cadmium, Copper, Hexavalent Chromium, Lead, Nitrates/
Nitrites, Radium 226/228, Selenium,Trivalent Chromium,Turbidity
andTotal Dissolved Solids (TDS). SystemTested and Certified by NSF
International against NSF/ANSI Standard 372 for low lead content
and compliance.
Please refer to Performance Data Sheet for complete reduction data.
Redi-Twist™ Reverse Osmosis Filtration System Model USS-335
Reverse Osmosis
Filtration System
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
1/4 turn
LOCK LOCK
LOCK
Step 8

2
Tools & Materials Required
main components secondary
components
tools needed for
installation
phillips
screwdriver
1/8” drill bit
adjustable
wrench
utility knife
1 2 3
30’
tape measure
safety glasses
drill
mounting screws kitchen faucet adapter
package contents
mounting screws
kitchen faucet
adapter
white tubing
red tubing
nitrate test strip
eye dropper
foam seal
screws and nuts
secondary:
filter system head with built-in bracket
Redi-Twist™ filters: (2) carbon and (1) membrane
air gap faucet (faucet neck and body)
faucet base
water storage tank and base
drain connector
tank connector
restrictor
elbow fitting
main:
filter system head
Redi-Twistfilters (1st, 2nd, and 3rd stage)
air gap faucet
water storage tank
white tubing
(3/8" and 1/4")
red tubing
(3/8" and 1/4")
faucet base
nitrate test strip
drain connector
eye dropper
compression cap (for kitchen
faucet spray hose connector)
drill with 1/8" drill bit
hollow-wall anchor bolts or
toggle bolts
hacksaw
plumber's tape
optional items:
tank connector
restrictor
foam seal screws and nuts
center punch
000.00
digital air
pressure gauge file
A E A
1st Stage
Carbon Filter
2nd Stage
Membrane Filter
3rd Stage
Carbon Filter
USF-201 USF-201USF-205
elbow fitting

3
Version 2.1I
USS-335 installation instructions
Helpful Hints
My BritaRedi-Twist™ Filter System (Replace system every 5 years)
System Cartridge Model No(s). Date Purchased / Date to Replace For FREE Filter Replacement
Reminder, go to
www.protectplus.com
The Install Process
Step 1 Install Kitchen Faucet
Adapter
connect to auxiliary faucet
Install RO Drain
Connector
connect to auxiliary faucet
Step 2
Install RO Filter System
Assembly
connect to auxiliary faucet
Step 3
Install Water Storage
Tank
connect to auxiliary faucet
Step 4
Step 5 Install RO Faucet
connect to auxiliary faucet
Connect Water Lines
connect to auxiliary faucet
Step 6
Internet & Mobile[phone] Free Installation Video
Manufactured for: Protect Plus, LLC 420 3rd Avenue NW, Hickory, NC 28601 USA
WARNING
This product will not work
without proper installation of
these parts.
Sanitize, Test, and Purge
System
connect to auxiliary faucet
Step 7
1/4 turn
LOCK LOCK
LOCK
Install Redi-Twist™ Filter
and Check for Leaks
connect to auxiliary faucet
Step 8

4
Please wear safety glasses to protect eyes when drilling.
CAUTION
!
Operation / Maintenance Data
These units are intended for non-commercial use. They should be used only in ambient air temperature of between 40 degrees F /
4.4 degrees C and 100 degrees F / 37.7 degrees C. Placement of these units in direct sunlight or use of electrical heating equipment
on these units must be avoided. Replace filter cartridge when and as directed in the installation / operation instructions included with
each cartridge. Replacement filter cartridges are available at retail outlets. Water pressure must be over 40 psi to operate system.
Please read all instructions, specifications, and precautions before
installing and using your water filter system.
Because of the product’s limited service life and to prevent costly repairs or possible water damage, we strongly recommend
that the system be replaced every five years. If the system has been in use for longer than this period, it should be replaced
immediately. Date the top of any new head to indicate the next recommended replacement date.
DO NOT DRILL THROUGH AN ALL-PORCELAIN OR CAST IRON SINK. If installing on an all-porcelain or cast iron sink, the
faucet must be mounted in a pre-drilled sprayer hole or through the countertop next to the sink. If the countertop must be
drilled, make certain that the area below the drilling location is free of wiring and pipes. Also, make sure that there is sucient
room to make the proper connections to the bottom of the faucet mount. DO NOT DRILL THROUGH COUNTER TOPS MORE
THAN 1” IN THICKNESS OR COUNTERTOPS MADE OF TILE, MARBLE, GRANITE, OR SIMILAR SUBSTANCE. Consult with a
plumber or the countertop manufacturer for assistance.
NOTICE
This filter must be protected from freezing, which can cause cracking of the filter and water leakage.
Precautions: for cold water use only.
Consult your local plumbing codes and install accordingly.
WARNING: Be sure that all electrical appliances and outlets are turned o at the circuit breaker before working in the cabinet area.
WARNING
• These filters are not water purifiers. Do not use with water that is microbiologically unsafe or of unknown quality without
adequate disinfection before or after the system. Systems certified for Cyst reduction may be used on disinfected water that
may contain filterable Cysts.
• This system is not intended to convert waste water or raw sewage into drinking water.
•This unit is not designed to filter sulfur odor (rotten egg odor) caused by hydrogen sulfide. Use of carbon filters to treat sulfur odor
may intensify taste/odor problems.
•Please comply with all state and local regulations regarding the installation of water treatment devices.
•The contaminants or other substances reduced by the water filter device are not necessarily in your water.
Filtration Facts
!
Before You Begin

5
Version 2.1I
USS-335 installation instructions
HOT COLD
Packaged Items
Shown in White
Storage Tank
1/4” line to Tank
1/4” line to Faucet
3/8” line to Drain
1/4” line to Filter
Kitchen
Faucet
Adapter
1/4" white tubing t ter
1/4" red tubing to
membrane drain
3/8" red tubing
to drain
3/8" white tubing to faucet
3/8" white tubing
to tank
Drain
Connector
Plan Your Installation: It is recommended to read through the entire manual before beginning your
installation. Follow all steps exactly. Reading this manual will also help you get all the benefits from your
system. Your Reverse Osmosis Drinking Water System can be installed under a sink or in a remote location.
Typical remote sites are a basement, laundry room, or utility room. Review the location options below and
determine where you are going to install your system.
Under the Sink Location: The Reverse Osmosis Filter Assembly and storage tank are normally installed in a
kitchen or bathroom sink cabinet. See top diagram. A suitable drain point is needed for reject water from the
Reverse Osmosis Filter.
Remote Location: You can also locate the Reverse Osmosis Filter Assembly and storage tank in a remote
location away from the Reverse Osmosis Faucet. You will need a nearby water source and drain point. See
bottom diagram. Note: Ensure the location is heated. Cold incoming water will adversely aect RO flow rate.
Check Space Requirements: Check size and position of items for proper installation into location chosen.
Before starting, close the cold water shut-o valves. Temporarily place tank and filter assembly into cabinet.
Double check position of items and space required for proper installation. Remove tank and filter from cabinet
and set aside. Note: You must check and comply with all local plumbing codes.
NOTE: DO NOT CONNECT
3/8" RED DRAIN TUBING
TO DRAIN WITH A
GARBAGE DISPOSAL.
Plan Your Installation

66
Introduction
Thank you for your recent purchase of the Brita® Reverse Osmosis (RO) Filtration System. You have
purchased a filtration system with a technology that has proven itself eective for filtering ultra-fine
water contaminants. This method of filtration is the most common water treatment technology used
by premium bottled water companies.
The system uses pressure and a membrane with very fine pores wrapped around a core. Pressure
is used to force water through many layers of the membrane. Because of this small pore size and
the many layers of the membrane the water has to travel through, this RO system is capable of
reducing many kinds of contaminants that many traditional carbon block filters are unable to reduce:
Contaminants Chromium (VI), Arsenic (V), and Nitrates/Nitrites. For a complete listing of all
contaminants this sytem removes, please refer to the Performance Data Sheet included with this
sytem.
This system is rated to produce around 19 gallons per day of filtered water. That is why there is a
pressurized water tank that comes with this sytem. The system is always working to produce filtered
water to keep the storage tank filled with filtered water. The system also comes with two carbon
block filters to help improve the taste of water as well.
The system, once properly installed, is fully automatic. It continues to filter water until the tank is
full. As the tank is drained from use, it again starts to filter water to fill the tank. There is also another
automatic function of this filter - a back-flush. The membrane uses a cross flow to sweep away
rejected contaminants from the water left behind in the membrane. These contaminants are flushed
down the drain through the drain adapter. You will sometimes hear a gurgling sound coming from
the faucet - this is to let you know the RO is flushing the membrane. All of this of course helps to
optimize the life of the membrane. The 12 month filter life would be considerably less without this
feature.
All of this works o the natural pressure supplied by your home's household water lines. Pressure
should be between 40 PSI and 100 PSI (maximum). This system is complex. Be sure to read the set-
up instructions and perform all maintenance procedures to enjoy RO filtered water from your system.
If you would like to learn more about Reverse Osmosis, please visit our website or scan the MS Tag
at the bottom of this page. And remember, our experienced Customer Service team is available to
answer any questions you may have.
Thank you and enjoy!
Sincerely,
Brita and Protect Plus Water Filtration Team

7
Version 2.1I
USS-335 installation instructions
• Locate cold water line in sink cabinet.
Turn o the cold water supply to sink.
• Turn on kitchen faucet to allow water
to completely drain from line.
• Disconnect cold water line from 1/2"
threaded stem on bottom of kitchen
faucet.
• Holding Kitchen Faucet Adapter in an
upright position (see diagram), screw
onto threaded faucet stem.
• Connect the cold water supply line to
the Kitchen Faucet Adapter. Firmly
tighten the nut.
Note: If rigid plumbing pipe (metal or plastic) is
used, you may need to shorten supply pipe using a
hacksaw or pipe cutter to accomodate the Kitchen
Faucet Adapter.
materials and tools needed
CAUTION
safety glasses
Step 1 Install Kitchen
Faucet Adapter
connect to auxiliary faucet
COLD
WATER
VALVE
WARNING

• Remove protective cover from back of foam seal. Knock out center hole and align
holes then attach to drain connector front plate.
• Position the drain connector on the sink drain pipe above the drain trap. Allow
room for drilling. Tighten screws and nuts securely.
• Using the drain connector port as a drill guide, drill a 7/32" hole through the wall of
the drain pipe. DO NOT penetrate the opposite side of the pipe, and be careful not
to damage the side of the drain port fitting.
Note: Extra care should be taken when entering drains near dishwashers or food waste disposals, as backflow
may occur through the air gap and cause flooding.
materials and tools needed
safety glasses drill
DRAIN CONNECTOR INSTALLATION
Step 2
Install RO Drain
Connector
connect to auxiliary faucet
8
WARNING
CAUTION
FOAM
SEAL

9
Version 2.1I
USS-335 installation instructions
• Choose an easy-to-access area under the sink to mount RO System Head.
• Mark holes for mounting screws on the wall surface using the built-in bracket on
back of the RO System Head as a guide.
• Drill two pilot holes for the mounting screws. Insert mounting screws into the
wall with a phillips screwdriver, leaving approximately 3/8" of each mounting
screw exposed.
• Hang the RO System Head on the mounting screws.
Note: To allow adequate space for filter changes, allow a minimum clearance of 4" to 6" below the filter to the
floor. The filter System Assembly must be mounted in a vertical position.
Note: Mount Filter System Head to a solid cabinet wall or wall. If a solid surface is not available, use hollow-wall
anchor bolts or toggle bolts (not included) to secure to the wall.
Mount the Reverse Osmosis Filter System Assembly Head using the two mounting screws. The mounting screws allow
you to lift the RO Filter System Assembly without any hardware removal.
Step 3 Install RO Filter System
Assembly
connect to auxiliary faucet
materials and tools needed
WARNING
4-6" FROM BOTTOM
Mount to
cabinet in
vertical
position
safety glasses drill phillips
screwdriver

10
Step 4
Install Water Storage
Tank
connect to auxiliary faucet
Adjust air pressure in the tank to between
5 and 7 psi. You will need an accurate digital
air pressure gauge.
• Apply 2-3 wraps of plumber's tape to
the threads on the nipple at the top of
the Water Storage Tank.
• Locate the Tank Connector. Hand
tighten onto the Water Storage Tank
nipple 3-4 turns, being careful not to
cross thread or over tighten.
• Do not connect the tube at this time.
This will occur later in the assembly.
• Place the Water Storage Tank next
to the Reverse Osmosis Filter System
Assembly. The Water Storage Tank
can be placed upright or on its side.
Use provided mount stand.
materials and tools needed
Note: The Tank Ball Valve fitting on the Water
Storage Tank may need to be tightened 3-4 turns to
get a good seal. DO NOT OVERTIGHTEN.
10
000.00
digital air
pressure gauge

11
Version 2.1I
USS-335 installation instructions
E
DO NOT DRILL THROUGH AN ALL-PORCELAIN OR CAST IRON SINK. If installing on an all-porcelain or cast iron sink, the faucet
must be mounted in a pre-drilled sprayer hole or through the countertop next to the sink. If the countertop must be drilled, make
certain that the area below the drilling location is free of wiring and pipes. Also, make sure that there is sucient room to make the
proper connections to the bottom of the faucet mount. DO NOT DRILL THROUGH COUNTER TOPS MORE THAN 1” IN THICKNESS
OR COUNTERTOPS MADE OF TILE, MARBLE, GRANITE, OR SIMILAR SUBSTANCE. Consult with a plumber or the countertop
manufacturer for assistance.
CAUTION
!
• Determine where you are going to install your RO Faucet Body.
• Check to ensure the RO Faucet Body will mount flat against the mounting surface.
• Visually review the routing of the tubes from the RO System Head to the RO Faucet
Body. Check to ensure there is adequate tube routing space between the RO Faucet
Body and RO System Head.
• If drilling is needed, drill a 1-3/8" diameter hole in the mounting surface.
Step 5 Install RO Faucet
connect to auxiliary faucet
Select Location of Reverse Osmosis
Faucet Mounting Hole. You will need
to select the location of the Reverse
Osmosis Faucet. You have three options
to choose from:
• Use an existing sink top hole. This
may be blank. This is for the spray
hose or soap dispenser (must be
between 1-3/8" and 1-5/8" in
diameter).
• Drill a new hole in the sink.
• Drill a new hole in the countertop
next to the sink.
Step 5 continued on next page >>
safety glasses drill
materials and tools needed
1/4" white tubing to filter
1/4" red tubing to membrane drain
3/8" red tubing to drain
3/8" white tubing to faucet
3/8" white tubing to tank
Drain
Connector
WARNING
Cold Water Valve

12
<< Step continued from previous page
Step 5
Install RO Faucet
connect to auxiliary faucet
• Locate and organize your RO Faucet
install parts. See list on page 2.
• Attach 3/8" white tube to RO Faucet Body.
• Route the 3 tubes attached to the RO
Faucet Body through the RO Faucet
Base, but don't connect the RO
Faucet Body to the RO Faucet Base
yet. Then route the 3 tubes through
the hole in the sink until 12" of tubing
remains above the sink. Lay RO
Faucet Body on the counter top.
• Push the toggle bolts on the RO
Faucet Body through the sink hole
until the RO Faucet Body is flat
against the sink surface. Position
the toggle bolts to catch under the
lower surface of the sink or counter.
Ensure that they will not obstruct the
materials and tools needed
faucet stem from sitting in place. Tighten the toggle bolts until the RO Faucet Base
is mounted loosely to the surface. TIP: Make sure to keep the "wings" of the toggle
bolts free to allow all tubing and faucet stem room. Install the faucet base with the
bolts at 5 & 11 o'clock positions to have the handle positioned at 90 degrees to the
right.
• Firmly mount the RO Faucet Body to the RO Faucet Base by turning 1/4 clockwise
to lock. Ensure the RO Faucet Body Handle is positioned to your liking. TIP: If there
is not enough clearance for the tubing and stem, the toggle wings may need to be
adjusted to create more clearance.
• Turn the RO Faucet Body 1/4 turn counter-clockwise and remove the faucet enough
to tighten the RO Faucet Base toggle bolt screws firmly. DO NOT OVER-TIGHTEN.
• Mount the RO Faucet Body to the RO Faucet Base and turn 1/4 turn clockwise until
it locks.
• Mount the RO Faucet Spout to the RO Faucet Body by screwing spout nut to body.
mounting surface
hole
3/8" red tube
3/8" white tube
1/4" red tube
WARNING

13
Version 2.1I
USS-335 installation instructions
Step 6 Connect Water Lines
connect to auxiliary faucet
• Determine lengths of 1/4" plastic
tubing needed to connect to both
outlet port of Kitchen Faucet Adapter
and inlet port of system head.
• Cut 1/4" plastic tubing squarely on
both ends to length.
• Avoid extra long lengths that may
create kinks in the line.
• Insert all tubing into push-to-fit
connectors as illustrated.
materials and tools needed
CAUTION
safety glasses
Install 1/4" Plastic Tubing for Water Supply Line from
Kitchen Faucet Adapter to System Head Inlet
• Determine lengths of 3/8" plastic
tubing needed to connect to both inlet
port of Auxiliary Faucet and outlet port
of System Head (labeled "FAUCET").
• Cut 3/8" plastic tubing squarely on
both ends to length.
• Avoid extra long lengths that may
create kinks in the line.
• Insert all tubing into push-to-fit
connectors as illustrated.
Install 3/8" Plastic Tubing for Water Supply Line from
System Head Outlet to RO Faucet
WARNING
Step 6 continued on next page >>
1/4"
white
tubing

14
Step 6
Connect Water Lines
connect to auxiliary faucet
Air Gap from Faucet to RO Assembly
• Locate Membrane Drain port at bottom of
Membrane.
• Take Elbow Fitting and press down into Membrane
drain port to connect the fitting.
• Locate the ¼” red tubing attached to the Air Gap
barb on the Auxiliary Faucet body.
• Measure the length of ¼” red tubing necessary to
connect to the membrane drain port. The tubing
must be straight as possible with no loops, dips, low
spots or kinks.
• Cut the ¼” red tubing squarely to correct length
with a utility knife.
• Insert the restrictor into the end of the red tubing.
• Insert the red tubing into the open end of the Elbow
Fitting.
• Gently tug on the red tubing to ensure it is firmly
connected to the Elbow Fitting.
Note: Tubing lengths should allow for the removal of the assembly from the mouting screws for servicing. If tubing lengths
are shortened for neater appearance, it may be necessary to keep the assembly on the mounting screws for service.
Note: Codes in the state of Massachusetts require installation by a licensed plumber and do not permit the use of
saddle valves. If you live in the state of Massachusetts, review plumbing code 248-CMR of the Commonwealth of
Massachusetts before proceeding with the installation.
*Note: System will NOT operate without Restrictor.
Connect 3/8" Red Tube from Reverse Osmosis Faucet to Drain Adapter
• Locate 3/8" Red Plastic Tubing already attached to
RO Faucet Body.
• The other end needs to be attached to collet on sink
Drain Connector.
• Cut 3/8" Red Plastic Tubing as needed to route in as
straight of a run as possible, without loops, dips, low
spots, or kinks.
• Cut end of 3/8" Red Plastic Tubing square with a
sharp utility knife.
• Insert all the way into fitting approximately 1" until
it stops.
• Pull on tube to be sure it is held firmly in fitting.
Step 6 continued on next page >>
<< Step continued from previous page
NOTICE: Drain line into drain must be level.
*RESTRICTOR
Drain
Port
1/4"
water
line
Elbow
Fitting

15
Version 2.1I
USS-335 installation instructions
materials and tools needed
utility knife
<< Step continued from previous page
Step 6 Connect Water Lines
connect to auxiliary faucet
Connect Tubing from RO System Head to Water Storage
Tank
• Use remaining 3/8" White Tubing
and determine length necessary to
connect Tank outlet (labeled "TANK")
on RO System Head to Water Storage
Tank.
• Cut 3/8" White Plastic Tubing square
with a sharp utility knife.
• Loosen the compression nut on the top
of the tank - DO NOT REMOVE.
• Wet end of tubing and insert into
compression nut of Tank Connector
fitting (which was connected to tank
previously).
• Tighten compression nut to secure
tubing to Tank Connector.
• Insert other end of 3/8" White Plastic
Tubing into outlet of RO System Head
(labeled "TANK") approximately 5/8"
until it stops.
WARNING
CAUTION
HOT COLD
Packaged Items
Shown in White
Storage Tank
1/4” line to Tank
1/4” line to Faucet
3/8” line to Drain
1/4” line to Filter
Kitchen
Faucet
Adapter
1/4" white tubing t ter
1/4" red tubing to
membrane drain
3/8" red tubing
to drain
3/8" white tubing to faucet
3/8" white tubing
to tank
Drain
Connector
Loosen Compression Nut

16
• Make sure water supply to RO Filter System Assembly is o.
• Open the RO Faucet. If Water Storage Tank is not already empty, allow the water to
completely empty.
• Find eyedropper included in package and common household bleach (5.25%).
• Disconnect 3/8" White Plastic Tubing from Water Storage Tank by unscrewing nut
from Tank Connector fitting.
• Add 3 ml. of bleach into open end of Water Storage Tank 3/8" White Plastic
Tubing. Handle bleach according to manufacturer's instructions.
• Reconnect Water Storage Tank and 3/8" White Plastic Tubing to Tank Connector
fitting.
• Sanitizing RO Filter System Assembly will be completed during pressure test and
purging following steps on Page 17.
materials and tools needed
Sanitizing is recommended immediately
after installation of the RO Filter System
Assembly. It's also recommended after
servicing inner parts. It is important that
the person installing or servicing the
system have clean hands while handling
inner parts of the system. Complete the
following steps to sanitize the system.
Sanitize the System
Note: The bleach must be completely removed
from system before drinking RO water. See purging
instructions below.
Step 7 continued on next page >>
Step 7
Sanitize, Test and
Purge System
connect to auxiliary faucet
WARNING

17
Version 2.1I
USS-335 installation instructions
Step 7 Sanitize, Test and
Purge System
connect to auxiliary faucet
<< Step continued from previous page
Pressure Test the System (IMPORTANT: Complete sanitizing procedures on Page 16 before pressure testing.)
• Open cold water supply valve to RO Filter System Assembly. Leave the auxiliary
closed until pressure will start to build in RO Filter System Assembly in about 2
hours.
• Open kitchen faucet. This will purge air from plumbing system. Close kitchen faucet
when water runs smooth.
• Ensure RO Faucet is closed.
• Pressure will start to build in RO Filter System Assembly in about 2 hours. Carefully
inspect all fittings and connections while the RO Filter System Assembly builds
pressure. Check for leaks and fix if any are found by ensuring all tubing is cut
square and fully inserted. Also ensure tubing doesn't have a scratch, dent, or notch
at the end. If so, cut 1" o squarely and re-insert. If problems exist, refer to the
troubleshooting chart or call the toll free number.
Purge the System
• Open the RO Faucet and let water flow through the system for a 24 hour period.
Water will flow heavily until tank becomes empty, and then it will be a slow drip for
the balance of 24 hours.
• Close RO Faucet after 24 hour purge is complete.
• Your Reverse Osmosis system is ready for use when purge is complete.
Note: Flow rate will be very slow during the purge.
Review the following operating features before using your Reverse Osmosis System:
You will not have filtered water immediately. It will take 1-3 hours to completely fill the
storage tank to create liberal flow from the faucet. The flow rate from the RO system will
be less than your kitchen faucet. Water will run to the drain while the RO is filtering water,
even when you are not using it. You may hear water going to the drain - this is normal.
Water going to the drain will automatically stop when the storage tank is at capacity.

18
Install Redi-TwistFilters
and Test for Leaks Step 8
connect to auxiliary faucet
LOCK LOCK
1/4 turn
Align Arrow
LOCK
* Membrane filter cartridge ALWAYS in this position
• Remove the 1st Stage filter cartridge
first from the system to relieve pressure
on the RO filter.
• Remove the 3rd Stage filter cartridge.
• Discard all of the Redi-Twist filters in
a proper manner.
• Install new filters in reverse order:
1) 3rd Stage filter,
2) Membrane filter,
3) 1st Stage filter.
• Check tank pressure, and purge the
Reverse Osmosis System (Step 7).
A E A
1st Stage
Carbon Filter
2nd Stage
Membrane Filter
3rd Stage
Carbon Filter
LOCK LOCK LOCK

19
Version 2.1I
USS-335 installation instructions
Filter Replacement
(every 12 months)
connect to auxiliary faucet
R
E
P
L
A
C
E
E
V
E
R
Y
T
W
E
L
V
E
M
O
N
T
H
S
For FREE Filter Replacement Reminder, go to www.protectplus.com
Note: Place paper towels or rag under the filter system to catch any water drips.
Note: The 1/4" plastic tubing does not need to be disconnected for general routine maintenance and filter replacement.
However, plastic tubing may be easily disconnected. Simply turn o the water supply to the filter system. Press in the
collar around the fitting while pulling the plastic tubing out with the other hand.
LOCK LOCK
1/4 turn
Filter Replacement
(every 6 months)
connect to auxiliary faucet
R
E
P
L
A
C
E
E
V
E
R
Y
S
I
X
M
O
N
T
H
S
LOCK
1/4 turn
• Remove the Redi-Twist pre-filter cartridge from the system by turning it to the left.
• Remove the Redi-Twist post-filter cartridge from the system by turning it to the left.
• Disconnect the ¼” red tubing from the Elbow Fitting then remove the restrictor from
the tubing and replace with new restrictor. Disconnect the Elbow Fitting from the
membrane drain port. Remove the membrane from the system by turning to the left.
Replace the membrane and re-attach Elbow Fitting and reconnect to the ¼” red
tubing.
• Discard the Redi-Twist filters in a proper manner.
• Install new Redi-Twist filters in reverse order:
1) 3rd Stage filter,
2) Membrane filter,
2) 1st Stage filter.
• Purge the RO System per the instructions in Step 7.
1st Stage and 3rd Stage Filter Replacement: Membrane Filter Replacement:
LOCK LOCK
1st Stage
Carbon Filter
3rd Stage
Carbon Filter
2nd Stage
Membrane Filter

20
You can also run the drain tubing to an existing drain in the house. A floor drain, laundry
tub, standpipe, sump, etc. are suitable drain points. This type of drain is preferred over
the drain connector. Check your local codes. Longer lengths of tubing (see parts list in
manual) may be needed.
Always be sure to provide an air gap between the end of the hose and the drain point.
This will prevent water from backing up into the system. Air gaps are required code in
most areas.
materials and tools needed
WARNING
Install a Remote Drain Point and Air Gap (Remote Location)
Install System/Drain in
Remote Location
• Remove 1/4" Red Plastic Tubing from RO Faucet Body by pulling gently.
• Determine if this length is long enough to reach drain point. If so, insert Restrictor
in end of tubing and then insert this end of tubing into drain port on RO Membrane
Filter.
• If not, replace 1/4" Red Plastic Tubing with an adequate length of tubing to reach
drain point. Then insert Restrictor in end of tubing and then insert this end of tubing
into drain port on RO Membrane Filter. Refer to Step 6 in manual on how to
disconnect and connect tubing.
• Run tubing to drain point and secure at end with a bracket (purchased locally).
Provide a 1-1/2" air gap between end of tube and drain.
• Remove 3/8" Red Plastic Tubing from RO Faucet Body and discard.
• Faucet will not have 1/4" or 3/8" tubing attached to airgap barbs in the RO Faucet
Body for remote installation.
To install a remote drain point, complete the following steps:
HOT COLD
Packaged Items
Shown in White
Storage Tank
1/4” line to Tank
1/4” line to Faucet
3/8” line to Drain
1/4” line to Filter
Kitchen
Faucet
Adapter
1/4" white tubing t ter
1/4" red tubing to
membrane drain
3/8" red tubing
to drain
3/8" white tubing to faucet
3/8" white tubing
to tank
Drain
Connector