159
17.1.4 Specifications
Specifications of fresh water was heat transfer medium in brazed heat
17.1.4.1
exchanger
Parameter
Quality Limits for Tap Water on the Secondary Side
Temperature
Below 60°C
pH
7 to 9
Alkalinity
60mg/I <HCO
3
<300mg/I
Conductivity
< 500μS/cm
Hardness
[Ca
+
, Mg
+
] / [HCO
3
-
] > 5
Chloride
< 200mg/l at 60°C
Sulphate
[SO
4
2-
] > 100mg/I and [HCO
3
-
] / [SO
4
2-
] > 1
Nitrate
NO
3
< 100mg/I
Chlorine
< 0.5mg/l
External
filter
17.1.4.2
Solids in the water must be filtered.
Minimum filter mesh size required for the field supply external filter in the water inlet is 20 mesh.
Summary of Contents for WH-MXC09J3E5
Page 38: ...38 8 Block Diagram ...