Hardness is the amount of calcium, magnesium, and lime in your city or well water supply. Follow the steps below to properly program your softener.
Find the levels of Hardness and Clear Water Iron in your water supply.
a. Well water – take a sample of your water to a treatment facility to have it tested.
b. City water – call your local water supplier and ask for both Hardness and Clear Water Iron values.
The softener communicates in GPG (Grains per gallon). If your hardness number is reported in PPM or MG/L, divide that number by 17.1 to convert to GPG. Here's an example:
250 ppm / 17.1 = approx 15 gpg Hardness
Note - If you do not have Clear Water Iron, skip to Step 4.
If you have Iron in your water supply, you'll want to multiply the iron value by 5, then add that number to your hardness value. Example:
2 ppm Iron x 5 = 10 ppm Iron
10 pm Iron + 15 gpg Hardness = 25 gpg Total Value
Find the Hardness programming screen by scrolling through the menu on your softener with the Program/Select button. Then, use the Up/Down arrows to set your correct hardness value.
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What is the PPM number for hardness that I should aim for?
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