A.O. Smith Pro AOW-S400 Owner's Manual page 15

INSTALLATION GUIDE
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Add Water to the Brine Cabinet
For AOW-S400
Add 2 gallons (8L) of
water to brine cabinet
After first regeneration, appliance will
automatically refill the correct amount of
water into brine cabinet.
2 Ensure appliance is in Service position and
your water supply is turned on.
3 Continue to press and release Regenerate
button until controller advances to the
Brine Refill (04) position.
Allow the tank to fill with the proper
amount of water. The controller will then
advance the valve to Home position.
12 Fill Brine Cabinet With Salt
Fill brine cabinet with salt. Use clean white
pellet, cube-style, or solar salt. Do not mix
pellet with solar salt.
NOTICE: Always keep the salt level above the
water level. For convenience, fill the cabinet 3/4
when refilling with salt.
If salt level was below water level
before salt was added, wait two (2) hours
for saturated brine before starting any
regeneration.
NOTICE: Use of potassium chloride when iron
and/or manganese are present in the raw water
supply is not recommended.
1
For AOW-S500
Add 5 gallons (19L) of
water to brine cabinet
Service Position
NOTICE: This initial startup is the only time you
will add water to the brine cabinet. Do not add
water at any other time.
13 Complete the Installation
1 Ensure bypass valve is left in the Service
position. (see Service Position above)
2 Ensure water supply is on.
3 Open inlet valve and turn on electricity to
water heater. For gas water heaters, return
the gas cock to "On."
4 Turn on a cold water tap and allow water
softener to flush for 20 minutes or until
approximately 72 gallons (270 liters) have
passed through. This procedure is required
to meet NSF compliance. Verify the
controller indicates water flow. (see Setting
the Controller)
5 Place the cover on the cabinet.
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