AO Smith AO-US-200 2 Stage Water Filter Owner’s Manual

: June 16, 2024
: AO Smith

Table of Contents

AO-US-200 2 Stage Water Filter
BOX CONTENTS
INSTALLATION GUIDE
CARE & SAFEGUARDS
PERFORMANCE & CERTIFICATIONS
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

AO-US-200 2 Stage Water Filter
Owner’s Manual

AO-US-200 2 Stage Water Filter

AO-US-200
2-STAGE WATER FILTER
BAJO EL FREGADERO

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.

Congratulations on your new purchase. This water filter has been engineered to provide you with optimally clean water. The 2-Stage Water Filter features Cellarium ® filtration technology that reduces harmful contaminants and bad taste and odor while retaining beneficial minerals. Whatever your water needs
— from hydration to cooking and more
— A. O. Smith has you covered.
Keep this owner’s manual to reference installation, troubleshooting and filter replacement information.
If you need help or have a question, give us a call at 877.333.7108.
The recommended replacement frequency for the AO-US-200 is every 6 months or every 500 gallons of use.
Use only certified, genuine A. O. Smith replacement filters for continued contaminant removal and system performance.
Visit aosmithatlowes.com to find replacements or visit your local Lowe’s store.

2-STAGE WATER FILTER
Under Sink

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Scan to view the AO-US-200 installation video.

BOX CONTENTS

Please read entire manual and 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 filter.
Tools recommended for installation:

Variable speed drill w/ 7⁄32″ bit
Adjustable wrench
Measuring tape
Bucket
Phillips head screwdriver
Hammer

Faucet may be mounted on sink using an existing hole for a sprayer nozzle or soap dispenser, or by drilling a hole no more than 1/2″ in diameter. Ensure location of faucet allows spout to extend slightly past the edge of sink.
Note: We recommend using a professional if pipe cutting or drilling is required.
NEED HELP? GIVE US A CALL 877.333.7108

INSTALLATION GUIDE

STEP 1 Install Brass Tee and Connect Tubing

Install Brass Tee

Turn off COLD water supply.
With an adjustable wrench, disconnect water line.
Attach brass tee (B) to shutoff valve and re-attach COLD water line to brass tee.

Connect Tubing

Attach white tube (A) to the brass tee (B). Slide brass nut (C) onto the tubing with threads of nut facing end of tube.
Slide one plastic collar (D) onto the tube.
Place brass tube insert (E) into opening of tube.
Push tip of tube into opening of brass tee.
While holding tube in place, tighten brass nut to compress plastic collar and create a seal.

STEP 2 Faucet Installation and Connection

Faucet Installation
Place faucet rubber washer (F) between faucet and sink. Under the sink, thread the faucet spacer (G), faucet washer (H), and faucet nut (I) onto the tubing. Tighten faucet nut to secure faucet to sink.

Faucet Connection

Connect tubing to base of faucet. Slide chrome nut (J) onto the tubing with threads of nut facing end of tube.
Slide the second plastic collar (D) onto tube.
Place plastic tube insert (L) into opening of tube.
Push tip of tube into faucet base.
While holding tube in place, use wrench to tighten brass nut to create a seal.
Note: Avoid over-tightening.

STEP 3 Install Filter System and Connect Supply Lines

Install Filter System

Select a space under sink that is at least 12″ from the bottom of your cabinet for filter replacements and easy access to cold water supply. Use mounting holes located on back of filter unit to mark wall screw placements.
Note: Distance between holes is 2.55″.
Use a 7/32″ drill bit to drill holes for plastic anchors (K). Carefully tap anchors into drilled hole with a hammer. Mount unit to wall using screws. Pull protective plastic strip from the battery compartment. Red LED should flash and beep five (5) times to indicate that battery is installed correctly.

STEP 4 Install Filter Sumps
Attach each sump to bottom of unit housing. Align connection points, push sump up and turn to the right.
Note: Ensure all sumps are attached and locked in place. Ensure the sumps are not on an angle while attaching. This may result in damage to the O-ring. Do not lubricate the O-ring.

WARNING Do not use tools to remove or tighten sumps. Over-tightening can cause damage and result in leaking. HAND TIGHTEN ONLY.

STEP 5 Connect Supply Lines

Connect tubing from brass tee into inlet side of filter unit.
Connect tubing from faucet into outlet side of filter unit.

Note: Use diagram to check tubing depth. It is VERY IMPORTANT to insert tubing completely (0.95″) to prevent leaking.

Tips

Insert tubing completely (0.95″) to prevent leaking.
Wet end of tubing for easy installation into inlets and outlets.
Cut excess tubing to prevent crimping, kinks, loops or folds.

STEP 6 Check for Leaks and Proper Installation
Turn on COLD water supply. Turn on dedicated faucet and check for leaks. Leave water running to flush cartridge for 10 minutes or until water is clear of carbon fines. While the system is flushing, check for leaks. Once system is flushed, turn off dedicated faucet.
Note: Do not drink flushed water.

CARE & SAFEGUARDS

Care
To clean your filter system, wipe down the exterior with a damp cloth.
Once filters are at 95% capacity (about every 6 months), the battery alarm will sound and flash red when water is flowing and will continue for 15 seconds once water is turned off. Change the battery every time you replace your filters.
The battery is included with the filter replacement cartridges.
NOTICE
Safeguards

If you experience a hose connection leak, disconnect and re-set the hose.
Do not install this system where the line pressure may exceed 80 psi. The operating pressure range for this system is between 20-80 psi.
Install on COLD water lines only (40°F – 90°F).
Use caution when installing the system manifold on a cabinet wall that backs up to a dishwasher. Screws may exceed cabinet width.
It is recommended that your system be installed inside and out of direct sunlight. The system must be protected from both direct sunlight and freezing temperatures.
System and installation shall comply with applicable state and local laws.
Do not operate without the filters installed.
Must replace housing every 5 years or risk property damage from leaks. Call 800.821.2017 to order.
Do not use with water that is microbiologically unsafe or of unknown water quality without adequate disinfection before or after the system.
Systems certified for cyst reduction may be used on disinfected waters that may contain filterable cysts.

PERFORMANCE & CERTIFICATIONS

Models| Replacement| Rated capacity| Operating temp. range| Rated flow
---|---|---|---|---
AO-US-200| AO-US-200-R| 500 gallons
1892 Liters| 40-90° F
4.44-32.2° C| 0.5 gpm
1.89 lpm
Manufactured by: A. O. Smith Corporation 11270 W Park Pl #170, Milwaukee, WI 53224 | 877.333.7108

System tested and certified by WQA to NSF/ANSI Standards 42, 53, and 401 for the reduction of the claims specified on the Performance Data Sheet and at www.WQA.org.

For the full list of contaminants filtered, scan to view the AO-US-200 Performance Data Sheet.

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LIMITED 1YEAR WARRANTY

Who is covered:
A. O. Smith and its suppliers, (herein collectively referred to as “Manufacturer”) warrants to the original owner who purchased and installed the system (hereinafter “Owner”).
What is covered:
This Warranty covers defects in materials or workmanship during the limited Warranty period of your of your A.O. Smith Water Filtration System including sub-components purchased with original system (may or may not include faucet and fittings), except as provided below. The water filter is warranted only when it is installed, operated and maintained in accordance with the instructions accompanying the water filter found on aosmithatlowes.com. A water filter should be installed in such a manner that, if the system or any connection thereto should leak, the resulting flow of water will not cause damage to the area in which it is installed. For detailed instructions read the manual accompanying the water filter and review drawings in the manual.
For how long:
This Warranty runs for 12 months (365 days) from the date of purchase by a consumer (hereinafter “Warranty Period”). No Warranty coverage will be provided if the claimant is unable to provide proof of purchase from an authorized A.O. Smith reseller. Estimated lifespan of products is for information only and is based on usage approximations. Water conditions and use rates may limit the functional lifespan of your filter. This Limited Warranty does not extend to the full estimated life span of the system.
What A.O. Smith will do:

If necessary, the Manufacturer will provide a replacement that fulfills the remaining estimated lifespan/capacity of your original purchase and send it to you with installation instructions. If industry standards, product improvements or product obsolescence prohibit Manufacturer from furnishing an identical model replacement water filter under this Warranty, the Owner will be furnished with a new water filter of comparable remaining capacity and functionality; however, the Owner will be charged for the additional value of the item(s) which Manufacturer has incorporated in the replacement water filter. The Warranty period for any replacement will run for the balance of the original 365 days.
Component Part – If any component part proves to Manufacturer’s satisfaction to be defective in material or workmanship within the Warranty period listed on the data plate label, the Manufacturer will furnish the Owner with a replacement for the defective part(s).
Return of Defective Water Filter and Component Parts – Manufacturer reserves the right to examine the alleged defect in the water filter or component part(s), and it will be the Owner’s obligation to return the water filter and/ or component part(s) to the Manufacturer at the Manufacturers request.
a. When returning a water filter, it must include all component parts.
b. When returning component part(s), they must be individually tagged and identified with the water filter’s model number, date of purchase, and date of installation.

What is not covered:

This Warranty does not cover filter cartridges and any systems that were not installed in compliance with the instructions or that have been abused or operated incorrectly.
This Warranty applies only to products purchased from authorized A. O. Smith resellers.
The Limited Warranty stated herein is in lieu of any and all warranties, express or implied (whether written or oral), including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Manufacturer shall not be liable for any incidental, consequential, special, punitive, or contingent damages or expenses, arising, directly or indirectly, from any defect in the water filter or the use of the water filter, including but not limited to water damage.
Manufacturer shall not be liable for any water damage arising, directly or indirectly, from any defect in the water filter or component part(s) or from its use.
Manufacturer shall not be liable for any damage or product failures caused by any of the following:
• The water filter or any of its component parts have been subject to misuse, alteration, neglect or accident.
• The water filter has not been installed in accordance with the applicable local plumbing and/or building code(s) and/ or regulations or in their absence.
• The water filter is not installed, operated and maintained in accordance with the printed Manufacturer’s instructions, including if the water filter has any additional aftermarket equipment introduced into the sealed system not approved by the manufacturer.
• The water filter is exposed to highly corrosive conditions.
• The water filter is not continuously supplied with potable water.
• The water filter is not operated within the factory calibrated temperature limits.
• The water filter is installed in direct sunlight or exposed to freezing temperatures.
• The water filter or any of its component parts fail due to sediment build- up.
• Clogging due to purchaser’s failure to replace the filter cartridges.
• Damage caused by fire, flood or acts of God.
• Damage caused by over-pressurization in the water line.
Manufacturer shall not be liable for any claims related to excessive noise, smell, or taste of water.
This Warranty does not cover damage caused by the use of parts that are not genuine A.O. Smith parts. This includes, but is not limited to replacement filters, faucets, and/or diverter valves.
Except when specifically prohibited by the applicable state law, the Owner, and not the Manufacturer, shall be liable for and shall pay for all charges for labor or other expenses incurred in the removal, repair or replacement of the water filter or any component part(s) claimed to be defective or any expense incurred to remedy any defect in the product. Such charges may include, but are not necessarily limited to:
a. All freight, shipping, handling and delivery costs of forwarding a new water filter or replacement part(s) to the owner.
b. All costs necessary or incidental in removing the defective water filter or component part(s) and installing a new water filter or component part(s).
c. Any material required to complete, and/or permits required for, installation of a new water filter or replacement part(s), and
d. All costs necessary or incidental in returning the defective water filter or component part(s) to a location designated by the Manufacturer.

How to get service:
To receive service under this Warranty, you must contact A. O. Smith at 1-877-333-7108 within the Warranty Period to describe the problem to a customer service representative who will verify that the product is under Warranty and determine whether a part or the system will be replaced and whether you must send back the unit. You will be required to provide proof of purchase from an authorized A.O. Smith reseller and proof of proper installation.
Warranty registration:
Warranty registration is not required for coverage under the A.O. Smith Limited Warranty. If you purchased from a retailer or an authorized reseller, please complete the online Warranty registration form at www.aosmithatlowes.com/register. Proof of purchase from an A.O. Smith authorized dealer is required. Once registered online, we will have a record of your purchase.
How state law applies:
This Warranty gives you specific rights and you may have other rights which vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

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Need help?
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Tell us what’s going on. We’ll do our best to help solve the problem and improve the product.
System tested and certified by WQA to NSF/ANSI Standards 42, 53, and 401 for the reduction of the claims specified on the Performance Data Sheet and at www.WQA.org.

This filter system is designed and tested for use with genuine A. O. Smith parts, including replacement filters, faucet and all hardware. Use of parts from other manufacturers may result in loss of contaminant reduction performance, system damage or failure. Use of parts from other manufacturers will also void your warranty. Please visit aosmithatlowes.com for replacement parts. Installation must comply with state and local ordinances.
A. O. Smith is not liable for consequential or incidental damages due to improper installation.

A. O. Smith Corporation 11270 W Park Pl #170,
Milwaukee, WI 53224 | 877.333.7108