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Replacement of Main Units
TD831077
VII - 19
7
2. Indoor Units
7
7
7
7
7
Refrigerant recovery and oil recovery
HP
HP
HP
HP
Service
port
Dry core
Dry core
Dry core
Oil
separator
Oil
tank
Balance tube
Ball valve
Wide tube
Narrow tube
Refrigerant
Indoor unit
Indoor unit
Refrigerant
recovery
device
Vacuum
pump
Nitrogen
Closed
Closed
Closed
Open
Open
Open
Gauge
Gauge
Gauge
2
1
PC unit
AD unit
HP
HP
LP
LP
V4
V3
V2
V5
V6
V7
V8
V9
V1
1878_M_I
ø6.35
ø6.35
ø9.52
ø9.52
D-253U
D-505U
D-506U
ø15.88
D-254U
ø12.7
ø19.05
LP
LP
Half open
Closed
Fig. A