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Mitsubishi Electric CAHV-P500YA-HPB Instruction Manual page 15

Air-cooled heat pump unit cahv series
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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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