Carrier 16LJ-F Series Operation Manual page 36

Water quality standard for chilled water
pH(at 25C(77F))
Electrical conductivity 25C
Chloride ion
Sulfuric acid ion
Acid consumption pH 4.8
Total hardness
Calcium hardness
Ion silica
Iron
Copper
Sulfide ion
Ammonium ion
Residual chlorine
Free carbon dioxide
Ryzner stability index
Water quality standard for hot water
pH(at 25C(77F))
Electrical conductivity 25C
Chloride ion
Sulfuric acid ion
Acid consumption pH 4.8
Total hardness
Calcium hardness
Ion silica
Iron
Copper
Sulfide ion
Ammonium ion
Residual chlorine
Free carbon dioxide
Ryzner stability index
(1) The item appellation and its definition and the unit belong to JIS K 0101.
(2) The "yes" in the chart show the factor relevant to corrosion or scale genesis.
(3) When high temperature (over 40
protective coating against water, anticorrosive measure shall be done such as adding corrosion
prevention material, degasser and etc.
(4) Under the Cooling water system with hermetically-closed cooling tower; the closed-circuit
circulating water and its Makeup water are based on Hot water standard, spreading water and
its Makeup water are based on circulating Cooling water system.
(5) Supplied / replenished water needs to be tap water or industrial water or groundwater.
Deionized water, regeneration treated water and softening treated water are excluded.
(6) Upper15 items are shown as a typical factor for corrosion and/or scale genesis.
[Note 1] Each item of the standard values may cause a failure due to corrosion or scale and if any
item deviates from the standard value, it is assumed that corrosion or scale tends to be
caused, therefore, these should be periodically managed.
[Note 2] As the range of the water quality which may become usable if the water is processed
differs depending on the chemicals to be used, it is not given here. It is desirable to set
the appropriate water quality management values under the guidance of a water
processing specialist and periodically manage the water quality.
Circulation
T=<20C(68F)
6.5 - 8.0
ms/m 40 or less
-
50 or less
mgCl /l
2-
50 or less
mgSO /l
4
mgCaCO /l 50 or less
3
mgCaCO /l 70 or less
3
mgCaCO /l 50 or less
3
mgSiO /l 30 or less
2
mgFe/l 1.0 or less
mgCu/l 1.0 or less
2-
No detected No detected
mgS /l
+
1.0 or less
mgNH /l
4
mgCl/l 0.3 or less
mgCO /l 4.0 or less
2
RSI
20C(68F)=<T<60C(140F)
Circulation
7.0 - 8.0
ms/m 30 or less 30 or less
-
50 or less 50 or less
mgCl /l
2-
50 or less 50 or less
mgSO /l
4
mgCaCO /l 50 or less 50 or less
3
mgCaCO /l 70 or less 70 or less
3
mgCaCO /l 50 or less 50 or less
3
mgSiO /l 30 or less 30 or less
2
mgFe/l 1.0 or less 0.3 or less
mgCu/l 1.0 or less 0.1 or less
2-
No detected No detected No detected No detected
mgS /l
+
0.3 or less 0.1 or less
mgNH /l
4
mgCl/l 0.25 or less 0.3 or less
mgCO /l 0.4 or less 4.0 or less
2
RSI ***
o
C);generally, using corrosive steel, materials which have no
5-5
Chilled water line
Make up
6.0 - 8.0
30 or less
50 or less
50 or less
50 or less
70 or less
50 or less
30 or less
0.3 or less
0.1 or less
0.1 or less
0.3 or less
4.0 or less
*** ***
Hot water line
60C(140F)=<T<90C(194F)
Make up Circulation Make up
7.0 - 8.0 7.0 - 8.0 7.0 - 8.0
30 or less 30 or less
30 or less 30 or less
30 or less 30 or less
50 or less 50 or less
70 or less 70 or less
50 or less 50 or less
30 or less 30 or less
1.0 or less 0.3 or less
1.0 or less 0.1 or less
0.1 or less 0.1 or less
0.1 or less 0.3 or less
0.4 or less 4.0 or less
*** ***
Tendency
Corrosion Scale
Yes Yes
Yes Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes Yes
Yes
Yes
Yes
Yes
Yes
Yes Yes
Tendency
Corrosion Scale
Yes Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
*** Yes Yes