A.O. Smith AOS-HERO-CHR User manual

IF YOU NEED HELP OR HAVE A QUESTION, WE’VE GOT YOU COVERED. GIVE US A CALL AT 877.333.7108
PLEASE DO NOT RETURN TO THE STORE.
SI NECESITA AYUDA O TIENE ALGUNA CONSULTA, NOSOTROS NOS ENCARGAMOS. LLÁMENOS AL 877.333.7108.
NO ES NECESARIO QUE VUELVA A LA TIENDA.
HIGH-EFFICIENCY
REVERSE OSMOSIS
Owner’s Manual | El manual del proprietario
AOS-HERO-CHR
with SmartFlow™technology
OSMOSIS INVERSA DE ALTA EFICIENCIA CON TECNOLOGÍA SMARTFLOW™

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Congratulations on your new purchase. This water lter has been designed to
provide you with optimally clean water. The High-Efciency Reverse Osmosis
features SmartFlow™ technology that is engineered to reduce up to 99% of
harmful contaminants, while providing you with more pure water, less water
waste, and longer lter life than the average reverse osmosis system.
Keep this owner’s manual to reference installation, troubleshooting and lter
replacement information.
If you need help or have a question, we’ve got you covered. Give us a call at
877.333.7108.
The recommended replacement frequency for the
AOS-HERO-CHR is every 6 months for the Carbon Blocks
(Stage 1 & 3) and every 12 months for the SmartFlow™
Membrane (Stage 2).
Use only certied, genuine A. O. Smith replacement lters
for continued contaminant removal and system performance.
Visit aosmithatlowes.com to nd replacements
or visit your local Lowe’s store.
1266

TABLE OF CONTENTS
Box Contents ............................................................................................................1
Installation Guide................................................................................................. 2-7
Care & Safeguards.............................................................................................. 8-11
Performance & Certications ................................................................................12
Warranty.................................................................................................................13
Spanish/Español................................................................................................ 14-28
HIGH-EFFICIENCY
REVERSE OSMOSIS
Under Sink
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with SmartFlow™ technology
Scan to view the AO-HERO-CHR installation video.

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SYSTEM MANIFOLD
STAGE 1: CARBON BLOCK
STAGE 2: SMARTFLOW™ MEMBRANE
STAGE 3: ADVANCED CARBON BLOCK
AIRGAP FAUCET WITH PRE-CONNECTED TUBING
SLOTTED FAUCET WASHER
BOX CONTENTS
1
WATER TANK AND STAND
EYEDROPPER
DRAIN SADDLE KIT
TUBING 1/4" WHITE
TUBING 1/4" YELLOW
INLET TEE VALVE
• Tape measure
• Utility knife
• Phillips head screwdriver
• Drill with 7/16" bit
• Adjustable wrench
• Bleach
• Safety glasses
• Pencil
• Pan or bucket
Tools recommended for installation
Note: We recommend using a professional if pipe cutting or drilling is required. Basic
plumbing knowledge is recommended prior to installing this unit.
Please read entire manual to ensure all parts listed are present before installation.
If any part is missing or damaged let us know by calling 877.333.7108.
Do not attempt to install the lter.
B C D
L
B
A
C
D
E
H
F
G
I
J
K
L
A E
F
G
H I
J
K

• Bleach
• Safety glasses
• Pencil
• Pan or bucket
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INSTALLATION GUIDE 2
STEP 1 Site Setup
Note: This system requires an existing faucet hole 7/8" to 1 1/2" in diameter in the sink
or countertop to install the supplied dedicated faucet. You may also replace an existing
kitchen sink sprayer, soap dispenser, or pre-existing hole on the sink or countertop.
If drilling a new hole, ensure faucet body will mount at against surface and there is
sufcient tubing between faucet body and system manifold. If drilling, we strongly
recommend using a professional. Please wear safety glasses when drilling.
1. Unpack and unwrap box contents.
2. Turn off COLD water supply. Turn on the kitchen faucet to release pressure and
allow water to drain from the line.
3. Temporarily place system manifold and water tank into the under sink cabinet or
desired location to ensure adequate space and proper positioning.
Pre-installed 1/4" yellow tubing will be used to connect the dedicated faucet to
system manifold and water tank. Measure tubing from faucet hole to the back of
system manifold. Ensure the remaining tubing will be sufcient to connect system
manifold to tank. Do not cut tubing before following next instructions.
4. Remove system manifold and water tank from under your sink to begin installation.
13.74
"
(34.9 cm
)
13.74"
(34.9 cm)
9.06"
(23 cm)
12.93"
(33 cm)
4.5"
(11.5 cm)
DRAWING NOT TO SCALE, SYSTEM AND TANK ENLARGED.

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STEP 2 Install Air Gap Faucet
1. Feed pre-connected air gap faucet through
countertop hole.
2. Underneath countertop, slide the slotted faucet
washer onto threaded base of faucet. Washer
should be in between countertop and white
plastic spacer. If needed, loosen nut to
move spacer down to create enough
room for the washer.
3. Tighten nut with adjustable wrench. Do
not over tighten.
RED BLUE
STEP 3 Install Drain Saddle
WARNING: Ensure all electrical appliances and outlets are turned off at circuit breaker
before continuing. Please wear safety glasses when drilling.
1. Identify drain outlet location on
drainpipe to install drain clamp. Do not
install drain clamp on the same drainpipe
as garbage disposal. Mount drain clamp
as low as possible on the vertical or
horizontal drainpipe tailpiece.
2. Using the drain connector hole as a drill
guide, drill a 7/16" hole into the
drainpipe. Only drill through one side of
the drainpipe.
3. Take the connection half of the drain
clamp and attach the foam gasket. Do
so by removing the center hole and
protective cover from the back of the
foam gasket. Align the foam gasket hole
with the hole on the inside of the drain
clamp. The adhesive side of the foam
gasket should be facing the inside of the
drain clamp. Press rmly to attach.
4. Insert nuts into the other half of the drain
clamp. Place both halves together around
the drainpipe, aligning with the hole you
drilled. Use drill bit to help align.
5. Tighten nuts and screws to secure the
drain clamp halves around the drainpipe.
Tighten with screwdriver. Do not over
tighten.
INSTALLATION GUIDE
3
1 2
3

2
1
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STEP 4 Install Inlet Tee Valve and Tubing
Note: Ensure water valve is turned off before continuing.
1. Place a pan or bucket under cold water line to catch any excess water. With an
adjustable wrench, disconnect COLD water line from the 1/2" threaded stem on
the bottom of the kitchen faucet.
2. Attach threaded ends of inlet tee valve to the COLD water line of the shut-off
valve. Tighten with wrench. Do not over tighten.
3. Push white tubing into the open quick connect valve. Ensure inlet tee valve is in
the open position.
CLOSED OPEN
STEP 5 Install System Manifold
1. Place system manifold under the sink
in a place that will be easy to access for
scheduled lter changes. Do not install
lter cartridges at this time.
INSTALLATION GUIDE 4

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STEP 6 Sanitize and Install Water Tank
1. Open water tank valve. Valve should be
pointing towards the valve port.
2. Insert one end of yellow tubing into the
quick connect port that is pre-installed on
the top of the water tank.
3. Using included eye dropper, add 3ml
bleach into the open end of the attached
yellow tubing.
Note: Sanitation step will be completed
during the pressure test and ush step of
installation.
4. Place water tank on the tank stand in an
area that is near the system manifold.
5. Connect water tank to system manifold.
Do so by connecting one end of the
yellow tubing to the open end of the
water tank. Connect the other end of the
yellow tubing to the yellow inlet port
on the backside of the system manifold,
labeled, ‘tank’.
CLOSED OPEN
INSTALLATION GUIDE
5

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Faucet Connect
1. Connect the pre-installed 1/4" red tubing
(smaller tubing) on the faucet to the
system manifold. Push red tubing into the
red inlet port on the back of the system
manifold, labeled, ‘waste’.
2. Connect the pre-installed 1/4" blue tubing
on the faucet to the system manifold.
Push blue tubing into the blue inlet port
on the back of the system manifold,
labeled, ‘pure’.
3. Connect the pre-installed 3/8" red tubing
(larger tubing) on the faucet to the open
port of the drain saddle.
Inlet Tee Valve Connect
1. Locate the white tubing connected to the inlet tee valve. Using a utility knife or scissors,
cut the white tubing to the length needed to reach the back of the system manifold.
2. Push white tubing into white inlet port on the back of the system manifold, labeled, ‘inlet’.
STEP 7 Connect Tubings
Notes: Insert tubing completely to ensure connection. A fully connected tube
can be inserted up to an inch.
Wet end of tubing for easier insertion.
If cutting the tubing due to excess length, cut the tubing straight across, not
at an angle.
Connect tubing to system in a way that does not bend, crimp, or kink tubing
as this will affect system performance. FAUCET
TANK
HOT COLD
BLUE
YELLOW
RED
WHITE
BLUE
YELLOW
RED
INSTALLATION GUIDE 6

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1. Turn off dedicated faucet.
2. Turn on COLD water supply valve.
3. Turn on kitchen faucet to release air from pipes. Once water is owing normally, turn
off kitchen faucet.
4. Within approximately two hours, pressure will build in the system. During this time,
carefully inspect all connections and ttings for leaks.
5. After ensuring all connections and ttings are secured, turn on the dedicated faucet.
Let water ush for 2 hours.
Note: Water ow rate will be slow during initial ush. Do not drink the ushed water.
6. Once ush is complete, turn off the dedicated faucet.
Note: After initial system ush, it will take 1-3 hours for the water tank to ll.
STEP 9 Pressure Test, Check for Leaks, and Flush
1. Insert each lter cartridge into its designated location in
the system manifold by turning to the right. The guides
on each lter will ensure proper alignment within the
system manifold.
2. Once the lter is engaged, push the lter fully in
while rotating 90 degrees to the right. Continue this
step for each lter.
· Top lter: Carbon Block
· Middle lter: SmartFlow™Membrane
· Bottom lter: Advanced Carbon Block
STEP 8 Insert Filter Cartridges
Stage 1
Carbon Block
Stage 2
SmartFlow™Membrane
Stage 3
Advanced Carbon Block
7INSTALLATION GUIDE