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4. Installation Walkthrough
4.6. Refrigerant Pipework
4.6.1.Amount of Refrigerant:
For all units, the refrigerant included inside is sufficient for up to 5 meter long piping kits. If the
piping is beyond 5m, it is necessary to add 40g of refrigerant per additional meter. It is recommended
to keep the length of the refrigerant piping to under 12m.
Ex. If the pipe is 9m in length, 4x40g = 160g of refrigerant will need to be added.
High/Low
pressure valve spindles
Connector for refrigerant pipe
: 3/8” and 1/ 2”
: 3/8” and 5/8”
AW6/9-V6-SG
: 1/4” and 1/ 2”
AW11-V6-SG
AW13-V6-SG
Connector for
vacuum pump
Note:
When vacuuming the system,
please don’t open the high/low
valve spindles. Otherwise
refrigerant leaks.
4.6.2.Precautions
Because the refrigerant pipe transfers heat to the entire system, any insufficient vacuuming and/or
leakage of the refrigeration system will lead to decreased performance. Therefore, please ensure the
following:
•
•
•
•
Select a high quality refrigerant pipe that conforms to the pressure standards of Refrigerant R410A.
Insulate the pipe before
connecting it.
Avoid bending/deforming the refrigerant pipe as much as possible.
Ensure the inside of the pipe is completely dry, to avoid trapping moisture in the pipeline.
•
Any walls or separators between the indoor and outdoor unit should have a wall sleeve fixed to the
hole, which the installer should drill in order to accomodate the refrigerant pipe.
•
Do not insulate the refrigerant pipes together. (Fig.1)
Each pipe requires it’s own insulation. (Fig.2)
Insulation
Copper
tube
figure 1
figure 2
