9
Product introduction
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 flow volume is the sum of each Water Cooled VRF flow volume referring to
technical specs. for each individual unit rated water flow volume. Temperature of water inlet is
7-45°C. When system uses electrical two way valve to control water flow volume, the total water
flow volume can be counted by the units working ratio.
a) The flow switch is placed below the electrical box, please out during installation .
b) Note the direction of the flow switch, can’t install vertical downward.
c) The straight pipe length L1 and L2 should be not less than 160 mm, or it will affect the control
precision.
d) When connect wiring, please cut off power supply.
e) Prohibit change flow switch settings.
f) Please connect to the earth, after connect wiring, don’t forget install the flow switch shell.
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 valve
Soft joint
Water filter
Pump
Water treatment device
Water pipe of DN32
Water flow switch
Gate valve
External
Water from outdoor unit
L1
L2
