Water Characteristics - CLIVET WiSAN-YME 1 S 2.1 Manual For Installation, Use And Maintenance

Water connections
6.1.2

Water characteristics

Circulators are designed to operate optimally only with clean, good quality mains water and may be affected
by the presence of oxygen, limescale, sludge, abnormal acidity levels and other substances (including
chlorides and minerals). The same can be said for the plate heat exchanger.
Excessive water hardness can create deposits and limescale build-up that can damage the unit. The
presence of critical concentrations of other components in the circuit can trigger corrosive processes or
other quality problems in the circulator and plate heat exchanger. Check that the system water complies with
the concentration limits given in the table.
W
CAUTION
If the water hardness is too high, assemble a water softener to reduce the value.
W
CAUTION
The heating system must be airtight and materials must be chosen that are not sensitive to oxygen diffusion
(which can cause corrosion).
pH (25°C)
SO
--
4
HCO / SO
-
3
Total Hardness
Cl-
PO
3-
4
NH
3
Free Chlorine
Fe
+
3
Mn
++
CO
2
H S
2
Temperature
Oxygen content
Sand
Ferrite hydroxide Fe3O4 (black)
Iron oxide Fe2O3 (red)
Characteristics
--
4
Water component for corrosion limit on Copper
7.5 to 9.0
< 100
> 1
8 to 15 °f (4.5-8.5 dH)
< 50 ppm
< 2.0 ppm
< 0.5 ppm
< 0.5 ppm
< 0.5 ppm
< 0.05 ppm
< 50 ppm
< 50 ppm
< 65 °C
< 0.1 ppm
10 mg/L 0.1 to 0.7mm max diameter
Dose < 7.5 mg/L 50% of mass with diameter < 10 µm
Dose < 7.5mg/L - Diameter < 1 µm
37