14
Rev 0.0
USER INSTRUCTIONS
EN
N.B.:
the display indicates the water hardness adjustment and the
program delay. A dot (.) after the number means that the water hard-
ness adjustment is being displayed. If no dot (.) appears, the pro-
gram delay is being displayed.
11
Water hardness table
(see tab. 2-03)
WATER HARDNESS
SETTING
German degrees
(°D)
French degrees (°F)
American degrees
grains/galls
0 - 4
0 - 7
0 - 4.5
0.
5 - 15
8 - 25
4.6 - 14.5
1.
16 - 23
26 - 40
14.6 - 23.5
2.
24 - 31
41 - 60
23.6 - 35
3.
32 - 47
61 - 80
35.1 - 46.5
4.
48 - 58
81 - 100
46.6 - 58.5
5.
Tab. 2-03
Contact your local water board for information on the hardness of your water
supply.
Fig. 2-05
Summary of Contents for STO905U
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