Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 206

③ Water treatment and control
When the Circulating cooling water runs for a long time, it will produce algae, and salinity will rise, resulting in
heat exchanger fouling, which will affect the heat transfer efficiency. It is better to process timely. Electronic water
treatment meters should be included for scale resistance protection and water quality stabilization. They have been
widely applied in engineering now. Therefore the electronic water treatment meter is preferred in the cooling water
system design. You will experience accumulation of sludge in the Water Cooled VRF water system after operation
(caused by dust in the air), which needs regular cleaning (generally one time a year). Professional central AC water
system cleaning agent is recommended.
Water quality control
Standard
Reference
Notes: ○: scaling □: erosion
Item
PH
Conductivity
Chlorine ion
Sulfate ion
Total iron
Alkali ion
Total hardness
Sulfion
Ammonium ion
Silicon
Standard requirements
7.5-9.0
≤200uv/cm(25°C)
≤50ppm
≤50ppm
≤0.3ppm
≤50ppm
≤50ppm
/
/
≤30ppm
205
Influencing factors
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