1. Unit Components
Figure 1 Top view of the refrigerant pipes inside an outdoor unit
C
F
H
CJ2 CJ1
B
D
G
CJ4
CJ3
Figure 2 Valve types allocations
CJ4
A
A: Refrigerant charge port (for automatic
charging only)
B: Check joint on the low-pressure side
A port through which additional refrigerant
CJ5
is charged after the completion of
refrigerant oil recovery operation
C: Service port on the high-pressure valve
Connecting port to the refrigerant circuit
• Evacuation port (high-pressure side)
• A port through which refrigerant for the
D: Service port on the low-pressure valve
Connecting port to the refrigerant circuit
E
• Evacuation port (low-pressure side)
• A port through which refrigerant for the
E: A valve to be closed after the completion
of refrigerant oil recovery operation (BV3)
(Be sure to close this valve after the
completion of refrigerant oil recovery
operation.)
F: High-pressure valve
G: Low-pressure valve
H: O/T
I: ACC
J: COMP
CJ3: Refrigerant charge port
CJ4: Oil sampling port
CJ5: Refrigerant oil discharge port
2
I
J
CJ5
indoor units is charged
indoor units is charged