IF ( and only IF ) the control board is 742 or 762.

If program the 740 or 760 board, 

it will NOT ask you for Valve Model ( type ) to be input.

So, you won't see that "step" when moving through the programming options.

Use the arrows to choose ( select ) the letter "F" if used on Backwash Only Valve, 

you will be setting the Resin Capacity of your Water Softener.

Step Two: Resin capacity.

Capacities:
0.75 for 24K ( 3/4 cu.ft. ) - most 8" diameter tanks
1.0 for 32K ( 1 cu.ft. ) - most 9" diameter tanks
1.25 for 40K ( 1.25 cu.ft.) - most 10" x 44" tanks
1.50 for 48K ( 1.50 cu.ft. ) - all 10" x 54" tanks
2.0 for 64K ( 2 cu.ft.) - most 12" diameter tanks
2.5 for 80K ( 2.5 cu.ft. ) - most 13" diameter tanks
3.0 for 96K ( 3 cu.ft. ) - 14" x 65" tanks

Press the set ( square ) button to accept.

A. Time of day will be displayed.


B. Set day of week. Repeat steps 1,2, and 3 above.

C. Set time of regeneration ( typical 2:00 a.m. is used ). Repeat steps 1,2, and 3 above.

D. Set calendar override (for demand units like 760 or 762 ) 

or 

Days to regenerate (for timer units like 740 or 742).

 Repeat steps 1,2, and 3 above, using SET, Arrows, SET

NOTE: On demand units will normally be set to “0”.

E. Set salt dosage. Repeat steps 1, 2, and 3 above, using SET, Arrows, SET

NOTE: You have “L” for low, “S” for standard, and “H” for high.

And when in "F" ( filter, backwash ),

if you see Salt = 14 minutes, hit SET ( square ) until the number starts flashing,

and then use Arrows to adjust --- But for most applications --- 14 minutes ( which is referencing amount of time to backwash -- nothing to do with "salt",

would be a good / correct amount of time ( setting ) to use for the Backwash cycle ( again it's not about "salt" when in the "F" mode ).

This Default of 14 minutes is recommended.

** For SALT Setting ---- you'll see L, S, and H for 740 and 760 boards when programming for Softener application,
Standard "S" is the most efficient.