Daikin EUWAC8FZW [20/26] Below 0
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Daikin EUWAC8FZW [20/26] Below 0

Daikin EUWAC8FZW [20/26] Below 0
3
1
11
• Applied Systems • Chillers
21
• Chillers • R-407C • EUWAC-FZW
11 Installation
11 - 1 Water charge, flow and quality
Be sure the water quality is in accordance with the specifications below:
ITEMS Cooled water Tendency if out of
criteria
Circulating water
(below 20°C)
Water supply
Items to be controlled:
- pH at 25°C
6.8 - 8.0
6.8 - 8.0 Corrosion + scale
- Electrical conduct
(mS/m) at 25°C
Below 40
Below 30 Corrosion + scale
(μS/cm) at 25°C
⎯
⎯ Corrosion + scale
- Chloride ion (mg Cl
-
/l)
Below 50
Below 50 Corrosion
- Sulfate ion (mg SO
2
4
-
/l)
Below 50
Below 50 Corrosion
- M-alkalinity (pH 4.8) (mg SO
3
/l)
Below 50
Below 50 Scale
- Total hardness (mg CaCO
3
/l)
Below 70
Below 70 Scale
- Calcium hardness (mg CaCO
3
/l)
Below 50
Below 50 Scale
- Silica ion (mg SiO
2
/l)
Below 30
Below 30 Scale
Items to be referred to:
- Iron (mg Fe/l)
Below 1.0
Below 0.3 Corrosion + scale
- Copper (mg Cu/l)
Below 1.0
Below 0.1 Corrosion
- Sulfite ion (mg S
2
-
/l)
Not detectable
Not detectable Corrosion
- ammonium ion (mg NH
+
4
/l)
Below 1.0
Below 0.1 Corrosion
- Remaining chloride (mg Cl/l)
Below 0.3
Below 0.3 Corrosion
- Free carbide (mg SO
2
/l)
Below 4.0
Below 4.0 Corrosion
- Stability index
⎯
⎯ Corrosion + scale
Names, definitions and units are according to JIS K 0101. Units and figures between brackets are old units published as reference only.

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