9.23 Water quality
EB/GB
Water hardness for both water-supply connections: Cleaning, recoil hand shower (A) and boiler (B)
Water quality
■
Drinking water
■
Hard water
German degrees of hardness (general hardness: GH) [°dH] 4 - 20
French degrees of hardness [°fH] 7 - 35
English degrees of hardness [°e] 5 - 25
International [ppm] 70 - 360
Chemical [mmol/l] 0.7 - 3.6
Properties
Temperature [°C] max. 40
Electrical conductivity [µS/cm] min. 20
pH 6.5 - 8.5
Cl
-
(chloride)
[mg/l] max. 60
Cl
2
(free chlorine) [mg/l] max. 0.2
SO
4
2
-(sulphate)
[mg/l] max. 150
Fe (iron) [mg/l] max. 0.1
SiO
2
(silicate) [mg/l] max. 13
NH
2
Cl (monochloramine) [mg/l] max. 0.2
9 Technical data
Installation manual 97