Mitsubishi Electric CAHV-P500YA-HPB Instruction Manual page 15

Quality Standards for Heating and Makeup Water
Properties
Makeup water
Ph (25ºC) 7.0–8.0
Electrical 30 or below
conductivity
(mS/m)(25ºC)
Chloride ion 30 or below
-
(mgCl /l)
Sulphate ion 30 or below
2-
(mgSO /l)
4
Acid 50 or below
consumption
(pH 4.8)
(mCaCO /l)
3
Total 70 or below
hardness
(mgCaCO /l)
3
Calcium 50 or below
hardness
(mgCaCO /l)
3
Ionized silica 30 or below
(mgSiO /l)
2
Iron (mgFe/l) 0.3 or below
Copper 0.1 or below
(mgCu/l)
Sulphide ion Not to be
2-
(mgS /l) detected
Ammonium 0.1 or below
+
ion (mgNH /l)
4
Residual 0.3 or below
chlorine
(mgCl/l)
Free carbon 4.0 or below
dioxide
(mgCO /l)
2
Quality standards
Circulating water
[Between 20ºC
(exclusive) and 60ºC
(inclusive)]
7.0–8.0
30 or below
50 or below
50 or below
50 or below
70 or below
50 or below
30 or below
1.0 or below
1.0 or below
Not to be detected
0.3 or below
0.25 or below
0.4 or below
15/20
Circulating water
[Between 60ºC
(exclusive) and 90ºC
(inclusive)]
7.0–8.0 6.8 or below
30 or below
30 or below
30 or below
50 or below
70 or below
50 or below
30 or below
1.0 or below
1.0 or below
Not to be detected
0.1 or below
0.1 or below
0.4 or below
Corrosion and scaling
tendencies
Corrosion Scaling
8.0 or above
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