7
C.
Press the “SET” button to display the regeneration time (default 3:00 AM). It may
be changed using the “UP” and “ADVANCE” buttons in the same manner as
setting the time of day.
D. Press the
“SET” button to display the unit size definition (“SET DEF”). The default
for FEST45 is “MEDIUM”, for FEST60 the default is “LARGE”
Press the
“SET” button to return to the main display.
How to Calculate the
“DAY OVERRIDE”:
Calculate the number of gallons that can be treated for tannin, divide 1,000 by the tannin level. Then divide that
result by estimated daily water use (dropping all fractions) to determine the maximum number of days between
regenerations for tannin reduction.
“DO” = ((1,000 ÷ tannin mg/l or ppm) ÷ (# people x 75 gal. per day)) dropping any fractional portion of the result.
Example:
Tannin = 1.7 ppm, 3 people in family
3 people x 75 gallons per day = 225 gallons per day usage
1,000 ppm gallons ÷ 1.7 ppm tannin = 588.24 gallons capacity
588.24 gallons capacity ÷ 225 gallons usage per day = 2.61 days
Drop fractional portion = 2
Result:
Set tannin softener to regenerate once every 2 days
Installation Instructions (cont.)
