Operation Manual

4. Limit the carbonate concentration in the water
- The fill water must be softened if its hardness is higher than 20° fH (11,2° dH).
- Check regularly the water hardness and enter the values in the service log.
- Water hardness table :
Water hardness °fH °dH mmolCa(HCO3)2 / l
Very soft 0 - 7 0 - 3.9 0 - 0.7
Soft 7 - 15 3.9 - 8.4 0.7 - 1.5
Fairly hard 15 - 25 8.4 - 14 1.5 - 2.5
Hard 25 - 42 14 - 23.5 2.5 - 4.2
Very hard > 42 > 23.5 > 4.2
5. Control the water parameters
- In addition to the oxygen and the water hardness, other parameters of the water must be
checked.
- Treat the water if the measured values are outside the range.
Acidity 6,6 < pH < 8,5
Conductivity < 400 S/cm (at 25°C)
Chlorides < 125 mg/l
Iron < 0,5 mg/l
Copper < 0,1 mg/l
EN
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EN
BNE : 664Y6000 •D
INSTALLATION