Total Gallons Calculation Worksheet - Pro-Aqua PRO-S-80E Owner's Manual

TOTAL GALLONS CALCULATION WORKSHEET

The valve uses a meter to count the gallons of water being treated through the system. Once the gallons
programmed in the unit have been exhausted, the system will regenerate.
The total gallons of treatable water the system can produce is based on the system size, family size, and the
hardness level of the feed water.
A simple calculation is done to determine the amount of gallons to input during the programming portion of the
installation.
Total Gallons = System Capacity in Grains (see chart below) / Hardness in (GPG) Grains Per Gallon
Grain Capacity Setting
Brine Fill Settings in Minutes
NOTE: This calculation must be completed to program the unit:
Example:
System Capacity: 80,000 Grains
Feed Water Hardness: 25 GPG (must be tested on-site by the end user or installer)
Number of People: 4
(80,000 Grains / 25 GPG) - (4 People X 75 Gallons) = Total Gallons
3,200 Gallons - 300 Gallons = 2,900 Total Gallons
2,900 Gallons would be inputted for Total Gallons during programming.
If the hardness level is given in ppm or mg/L, it can be converted to Grains Per Gallon by dividing the value by 17.1.
Input the site values in the equation below to figure out your total gallons value:
( ____________ Grains / ____________ GPG) - ( ____________ People X 75 Gallons)
____________ Gallons - ____________ Gallons = ____________ Total Gallons
(determined by water test) - Number of People X 75 Gallons
Parameter PRO-S-80E
- 22 -
80,000
12