Hydrotech 2510 AIO SXT Chemical Free Iron Filter Operation Manual - Manual (Page 12)

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To determine the frequency of regeneration, use this procedure:
Setting the Frequency of Automatic Regeneration (SXT Models) Only With the Meter Control Valve
Please enter the ppm of compensated iron per gallon of water to be removed. See Step #4 of “User Programming.”
The SXT valve will automatically calculate the number of gallons of water to be treated by the iron filter between
regenerations.
How to calculate gallons of water between regenerations:
ppm of capacity between regenerations (see Specifications - Page 1)
÷ ppm of iron in the water sample
= number of gallons supplied between regenerations
- reserve capacity (number of people x 5 gallons)
Example - Using FAIO-1.0
30,000 ppm between regenerations
ч 2 ч 2 to ensure adequate reserve capacity
15,000
÷ 4 ppm of iron - 4 is the minimum setting of compensated iron [To be entered by the user]
= 3,750 gallons between regenerations [See step #5 of “User Programming”]
– 375 gallons reserve capacity (5 people x 75 gallons)
= 3,375 GALLONS - BETWEEN REGENERATIONS [Calculated by valve]
How to calculate number of days between regenerations:
Total amount of iron to be removed between regenerations -
÷ ppm of iron to be removed per day
= NUMBER OF DAYS BETWEEN REGENERATIONS
Example:
5 people in the household
x 75 gallons of filtered water per person
= 375 gallons of filtered per day
x 4 ppm of compensated iron - 4 is the minimum setting of compensated iron
= 1,500 PPM OF IRON TO BE REMOVED PER DAY
Using FAIO-1.0
30,000 ppm between regenerations
ч 2 ч 2 to ensure adequate reserve capacity
15,000
÷ 1,500 ppm to be removed per day
= 10* DAYS BETWEEN REGENERATIONS
*Maximum number of days between regenerations is 12.