4. Water Control
7
MULTI V Water IV
Heat Pump
Installation of Outside Units
4.2 Standard table for water purity control
The water may contain many foreign substances and hence may influence the performance and lifetime of the
product due to the corrosion of the condenser and water pipe. (Use water source that complies with the below
standard table for water purity control.)
If you use water supply other than the tap water to supply the water for the cooling tower, you must do a water
quality inspection.
• If you use the closed cooling tower, the water quality must be controlled in accordance with the following
standard table.
If you do not control the water quality in accordance with the following standard water quality table, it can cause
performance deterioration to the air conditioner and severe problem to the product
Note
1. The "O" mark for corrosion and scale means that there is possibility of occurrence.
2. When the water temperature is 40°C or above or when uncoated iron is exposed to the water, it can result in
corrosion. Therefore adding anti-corrosion agent or removing the air can be very effective.
3. In case of using the closed type cooling tower, the cooling water and supplementing water must satisfy the water
quality criteria of closed type system in the table.
4. Supplementing water and supplied water must be supplied with tap water, industrial water and underground
water excluding filtered water, neutral water, soft water etc.
5. 15 items in the table are general causes of corrosion and scale.
Items
Closed type
Effect
Circulating
water
Supplemented
water
Corrosion
Scale
Basic Item
pH [25C]
7.0~8.0
7.0~8.0
O
O
Conductivity [25C] (mS/m)
Below 30
Below 30
O
O
Chlorine ions (mg Cl- /
˜
)
Below 50
Below 50
O
-
Sulfate ions (mg SO
4
2
/
˜
)
Below 50
Below 50
O
O
Acid consumption (pH4.8) (mg CaCO
3
/
˜
)
Below 50
Below 50
-
O
Total hardness (mg CaCO
3
/
˜
)
Below 70
Below 70
-
O
Calcium hardness (mg CaCO
3
/
˜
)
Below 50
Below 50
-
O
Ionic-static silica (mg SiO
2
/
˜
)
Below 30
Below 30
-
O
Reference Item
Iron (mg Fe /
˜
)
Below 1.0
Below 0.3
O
O
Copper (mg Cu /
˜
)
Below 1.0
Below 0.1
O
-
Sulfate ion (mg SO
4
2
/
˜
)
Must not be
detected
Must not be
detected
O
-
Ammonium ion (mg NH
4
+ /
˜
)
Below 0.3
Below 0.1
O
-
Residual chlorine (mg CI /
˜
)
Below 0.25
Below 0.3
O
-
Free carbon dioxide (mg CO
2
/
˜
)
Below 0.4
Below 4.0
O
-
Stability index
-
-
O
O
Содержание MULTI V WATER IV ARWN080LAS4
Страница 1: ...Heat Pump 380 415V 380V R410A 50Hz 60Hz 0CVW0 01N Replaces 0CVT0 01M P No MFL61741615 ...
Страница 27: ...17 MULTI V Water IV Heat Pump Outside Units 4 Wiring Diagrams ARWN080LAS4 ARWN100LAS4 ARWN140LAS4 ...
Страница 28: ...MULTI V Water IV Heat Pump 4 Wiring Diagrams 18 Outside Units ARWN200LAS4 ...
Страница 392: ...Special Guide MULTI V Water IV Heat Pump 1 Cautions for Refrigerant Leaks ...