LG RCWFH Series Instruction Manual page 116

116
Item
pH(25°C)
Electric conductivity
(Ma/m)(25°C) (㎲/cm) (25°C)
Chloride ion (mgCl￣/L)
Sulfuric ion (mgSO
Acid consumption (pH4.8)
(mgCaCO /L)
3
Total hardness (mgCaCO
Calcium hardness (mgCaCO
Ion silica (mgSiO
Iron (mgFe/L)
Copper (mgCu/L)
Sulfide ion (mgSO
Ammonium ion (mgNH
Residual chlorine (mgCl/L)
Free carbon dioxide (mgCO
Stability index
Note)
(1) Name and unit of the items are based on KS MD100.
(2) O sign within the table refers to the factor related to the corrosion or scaling trend.
(3) Unit and value within the parenthesis show data based on the previous unit, for reference.
(4) If the temperature is high (40°C or above), generally the corrosion rate becomes high especially for steel that di-
rectly contacts water without any protective coating. It is recommended to have an effective plan for the water
such as adding anti-corrosive additive or air removal process, etc.
Table 55. Water quality management standard for chilled water/cooling water
# The charging amount of oil & refrigerant
Two Stage Centrifugal chiller
Frame
1
2
3
4
5
6
7
Table 56. The charging amount of oil and refrigerant of the two stage centrifugal chiller
Cooling water system
Circulation type
Circulating Supplied
water water
6.5~8.2 6.0~8.0
below 80 below 30
below 800 below 300
below 200 below 50
￣/L)
2
below 200 below 50
4
below 100 below 50
/L) below 200 below 70
3
/L) below 150 below 50
3
/L) below 50 below 30
2
below 1.0 below 0.3
below 0.3 below 0.1
Not
￣/L)
2
detected detected
+/L) below 1.0 below 0.1
4
below 0.3 below 0.3
/L) below 4.0 below 4.0
2
5.0~7.0
Cooling capacity
[RT]
200
250 ~ 300
400 ~ 500
550 ~ 600
700
800
900 ~ 1000
1100
1300 ~ 1500
1600
1800 ~ 2000
2150 ~ 3000
Chilled water system
Once
through type
Once Circulating
through water
water (Below 20°C)
6.8~8.0 6.8~8.0
below 40 below 40
below 400 below 400
below 50 below 50
below 50 below 50
below 50 below 50
below 70 below 70
below 50 below 50
below 30 below 30
below 1.0 below 1.0
below 1.0 below 1.0
Not Not Not
detected detected
below 1.0 below 1.0
below 0.3 below 0.3
below 4.0 below 4.0
ㅡ ㅡ ㅡ
Oil amount
[liter]
40
40
40
50
50
60
60
60
60
120
120
120
Trend
Supplied
Corrosion Scaling
water
ㅇ
6.8~8.0
below 30
ㅇ
below 300
ㅇ
below 50
ㅇ
below 50
below 50
below 70
below 50
below 30
ㅇ
below 0.3
ㅇ
below 0.1
Not
ㅇ
detected
ㅇ
below 0.1
ㅇ
below 0.3
ㅇ
below 4.0
ㅡ ㅇ
Refrigerant amount
[kg]
450
500
650
650
750
900
1050
1250
1650
1800
2200
2500
ㅇ
ㅇ
ㅇ
ㅇ
ㅇ
ㅇ
ㅇ
ㅇ