19
English
Installation Procedure
Step 8 Connecting up and removing air
in the circuit
CAUTION
• When installing, make sure there is no leakage. When
recovering the refrigerant, ground the compressor first
before removing the connection pipe. If the refrigerant
pipe is not properly connected and the compressor
works with the service valve open, the pipe inhales the
air and it makes the pressure inside of the refrigerant
cycle abnormally high. It may cause explosion and
injury.
The air in the indoor unit and in the pipe must be
evacuated. If air remains in the refrigerant pipes, it will
affect the compressor either reduce cooling capacity or
lead to a malfunction. Refrigerant for air purging is not
charged in the outdoor unit. Use Vacuum Pump as shown
ɇϩϩ˵ʪθ˝˵ϩѣ˝Їθʪ
1 Connect each assembly pipe to the appropriate valve
ͱϩ˵ʪͱЇϩʒͱͱθЇϩɇʒϩ˝˵ϩʪϩ˵ʪѤɇθʪЇϩ
2 ŵʪ˙ʪθθ˝ϩͱϩ˵ʪЇϑϩθɇϩͱɵʪͱиࡥϩ˝˵ϩʪϩ˵ʪѤɇθʪ
ЇϩͱϑʪʀϩͱUѣθϑϩɇЇɇцɇʒϩ˵ʪиϩ˵ɇϩͱθαЇʪ
wrench, applying the following torque.
Outer Diameter (mm) Torque (N·m)
ø 6.35 14 to 18
ø 9.52 34 to 42
ø 12.70 49 to 61
ø 15.88 68 to 82
ø 19.05 100 to 120
A (Gas)
Outdoor Unit
B (Liquid)
3 Connect the charging hose of low pressure side of
manifold gauge to the packed valve having a service
Χͱθϩɇϑϑ˵ͱиɇϩϩ˵ʪѣ˝Їθʪ
CAUTION
• The designs and shape are subject to change
according to the model.
4 Open the valve of the low pressure side(A) of manifold
gauge anticlockwise.
AC052/071TXADKC
Vacuum
pump
AC100/120/140/160TXAD*C
Vacuum
pump
Outdoor Unit
A (Gas)
B (liquid)
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