50
Water control
It is necessary to analyse the quality of water by checking pH, electrical conductivity, ammonia ion content, sulphur
content, and others. The following is the recommended standard water quality.
Item
Chilled Water System
Tendency
Circulating Water
(20°C Less than)
Supply Water
Corrosion Deposits of Scales
Standard Quality pH(25°C)
6.8~8.0
6.8~8.0
●
●
Electrical Conductivity(ms/m) (25°C)
(μS/cm) (25°C) {2}
Less than 40
Less than 400
Less than 43
Less than 400
●
●
Chlorine lon (mg CL¯/l)
Less than 50
Less than 50
●
Sulphur Acid lon (mg SO ¯/l)
Less than 50
Less than 50
●
The Amount of Acid Consumption
(pH4.8)(mg CaCO3/l)
Less than 50
Less than 50
●
Total Hardness(mg CaCO3/l)
Less than 70
Less than 70
●
Calcium Hardness(mg CaCO3/l)
Less than 50
Less than 50
●
Silica L(mg SO¯/l)
Less than 30
Less than 30
●
Reference Quality Total iron(mg Fe/l)
Less than 1.0
Less than 0.3
●
●
Total Copper(mg Cu/l)
Less than 1.0
Less than 0.1
●
Sulphur Ion(mg S2-/l)
It shall not be detected
●
Ammonium Ion(mg NH4-/l)
Less than 1.0
Less than 0.1
●
Remaining Chlorine(mg Cl/l)
Less than 0.3
Less than 0.3
●
Floating Carbonic Acid (mg CO2/l)
Less than4.0
Less than4.0
●
Index of Stability
6.8~8.0
-
●
●
NOTE
•The mark “” in the table means the factor concerned with the tendency of corrosion or deposits of scales.
•The value showed in “{}” are for reference only according to the former unit.
Summary of Contents for AU082FYCRA(HW)
Page 1: ...ATW Service Manual SYJS 03 2019REV A Edition 2019 03 ...
Page 11: ...9 405 410 600 174 174 450 950 965 395 6 Dimensions AU082FYCRA HW Unit mm ...
Page 12: ...10 AU112 162FYCRA HW Unit mm 1490 950 380 187 405 410 600 174 174 450 170 ...
Page 13: ...11 AU082FYCRA HW 7 Piping Diagram ...
Page 14: ...12 AU112 162FYCRA HW ...
Page 27: ...25 12 Water Pressure Drop ...
Page 28: ...26 ...
