22
Connecting the refrigerant pipe
Temper grade and minimum thickness of the refrigerant pipe
Outer diameter [mm] Minimum thickness [mm] Temper grade
ø6.35 0.7
C1220T-O
ø9.52 0.7
ø12.70 0.8
ø15.88 1.0
ø15.88 0.8
C1220T-1/2H OR C1220T-Hø19.05 0.9
ø22.23 0.9
• Make sure to use C1220T-1/2H (Semi-hard) pipe for more than Ø19.05mm. In case of using C1220T-O (Soft) pipe
for Ø19.05mm, pipe may be broken, which can result in an injury.
CAUTION
Make at least one round:
It will reduce noise and vibration
The appearance of the unit may be dierent from the diagram depending on the
model.
• After connecting pipes with knock-out treatment, plug the space.
• Following the pipe connection, make sure to proceed precisely to prevent interference with the internal parts.
CAUTION
Adding refrigerant (R-410A)
The outdoor unit is loaded with sucient refrigerant for the standard piping. Thus, refrigerant must be added if the piping is
lengthened. This operation can only be performed by a qualied refrigeration specialist. For quantity of adding refrigerant,
refer to page 24.
1. Check that the stop valve is closed entirely.
2. Charge the refrigerant through the service port of liquid stop valve.
• Do not charge the refrigerant through the gas side service port.
NOTE
CAC GD-EU_IM_32793A-23_EN.indd 22 2016-05-25 오후 7:08:41
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