Haier AD482MPERA - Page 205

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Water system
Cooling water system guarantees Water Cooled VRF reliable operation. Water volume and water temperature
should reach the design index (see the technical parameter) during the designing of VRF water system in order
to not cause cooling volume dropping or tripping protection because of inadequate water or lack water or water
temperature too high.
①
System water volume and water temperature
The total water ow volume is the sum of each Water Cooled VRF ow volume referring to technical specs. for
each individual unit rated water ow volume. Temperature of water inlet is 7-45°C. When system uses electrical two
way valve to control water ow volume, the total water ow volume can be counted by the units working ratio.
②
Cooling towers and pumps
a) Select the cooling tower capacity based on the system’s water circulation volume.
b) The unit water system must select the closed cooling tower.
c) Circulating Pump is generally vertical pipeline pump. It is according to the length of the pipe and drag to select a
pump head. To ensure system security, water pump should remain a standby pump.
Closed-type cooling towers
Gate valveSoft joint
Water lter
Pump
Water treatment device
Water pipe of DN32
Water ow switch
Gate valve
Built-in
Water from
outdoor
unit
External