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START-UP INSTRUCTIONS
(CONTINUED)
STEP 3. PROGRAM HOUSEHOLD SETTINGS
This unit is factory set for the correct size. You are required to program the date, the time of day, the number of people living in the home and the
correct hardness setting. Please review
Compensated Hardness Calculation
before entering the hardness number from your water analysis.
Compensated Hardness Calculation:
__ ppm Iron x 4 = __ grains of hardness
__ ppm Manganese x 8 = __ grains of hardness
These numbers can be found on your water analysis report, and the equivalent grains of hardness should be added to your total hardness number.
The new sum of these numbers is the hardness to be entered during the programming.
Example
Our water analysis states that our hardness is 15 gpg.
To this we add;
Iron = 0.5 ppm x 4= 2.0 gpg
Manganese = 0.3 x 8= 2.4 gpg which we round-up (always) to 3.0 gpg
We use the following hardness equation to derive our total hardness number.
Hardness = 15 gpg + 2.0 (now called compensated iron) + 3.0 (compensated manganese) = 20 gpg.
Enter 20 for total hardness when programming.
Summary of Contents for Hydrotech 485HE
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