Install Instructions

NEED HELP? GIVE US A CALL 833.232.9712

AOW-S400 / AOW-S500

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

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 833.232.9712

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