18 Rev 0.0
USER INSTRUCTIONS
EN
Water hardness table (see tab. 2-04)
WATER HARDNESS
SETTING
German degrees (°D) French degrees (°F) American degrees
grains/gallon
0 - 4 0 - 7 0 - 4.5 H0
5 - 15 8 - 25 4.6 - 14.5 H1
16 - 23 26 - 40 14.6 - 23.5 H2
24 - 31 41 - 60 23.6 - 35 H3
32 - 47 61 - 80 35.1 - 46.5 H4
48 - 58 81 - 100 46.6 - 58.5 H5
Tab. 2-04
Contact your local water board for information on the hardness of
your water supply.