Installation Guide
NEED HELP? GIVE US A CALL 855.424.9892 NEED HELP? GIVE US A CALL 855.424.9892
Note: We recommend using an approved or certified professional to connect into
existing plumbing and/or if drilling is required.
Tools recommended for installation:
• Crescent wrench
• Fittings 3/4" to 1"
• Pliers
• Hose clamp
• Screwdriver
Additional items, if needed, are available
at Lowe’s and Lowes.com.
Looking for a replacement part and
need the part number? Please visit
AOSmithAtLowes.com
Note: We recommend using an approved or certified professional to connect into
existing plumbing and/or if drilling is required.
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 855.424.9892.
Do not attempt to install the softener.
3
BOX CONTENTS
OVERFLOW ELBOW
12V TRANSFORMER
V-185 NOZZLE
DRAIN LINE
CONTROLLER
A. O. Smith has obsessively engineered this water softener for you.
It features a built-in dirt and sediment filter and fine mesh resin that reduces
scale buildup on internal pipes and plumbing.
Keep this owner’s manual to reference installation, troubleshooting and
replacement information.
If you need help or have a question, we’ve got you covered.
Give us a call at 855.424.9892.
WARNING: indicates a
potentially hazardous
situation which, if not
avoided, could result in
death or injury.
WARNING
AO-WH-SOFT-PRO-350 / AO-WH-SOFT-400T
WATER SOFTENER
Box Contents ............................................................................................................3
Before You Begin .....................................................................................................4
Ferrous Iron and Compensated Hardness ...............................................................5
Getting Maximum Efficiency from the Appliance .................................................6
Precautions ...............................................................................................................7
Getting to Know Your New Softener......................................................................8
Valve Overview ......................................................................................................... 9
System Configuration ............................................................................................10
Installation ..............................................................................................................11
Troubleshooting .....................................................................................................16
Efficiency Statements .............................................................................................18
Specifications ..........................................................................................................19
Warranty .................................................................................................................22
Spanish/Español ......................................................................................................24
TABLE OF CONTENTS