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Hitachi RAC-18SX8 - Refrigerating Cycle Diagram

Hitachi RAC-18SX8
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Electric
expansion
valve
Electric
expansion
valve
Silencer
Silencer
Service
valve
(3/8"
Service
valve
(3/8"
INDOOR UNIT
Reversing
valve
REFRIGERATING CYCLE DIAGRAM
MODEL RAS-18SX8 / RAC-18SX8
OUTDOOR UNIT
COOLINGCYCLE
OUTDOOR UNIT
HEATINGCYCLE
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
9.52
Two way
valve
Two way
valve
φ
6.35
φ
6.35
φ
9.52
Single-ended union
1/4"
Single-ended union
3/8"
φ
9.52
φ
12.7
φ
9.52
φ
8.0
φ
12.7
φ
12.7
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
4.76
Charge port
  1/2
"
φ
12.7
INDOOR UNIT
Compressor
Service
valve
1/4"
Service
valve
1/4"
Strainer
Strainer
Strainer
Strainer
SilencerSilencer
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
7.0
φ
9.52
φ
6.35
φ
6.35
φ
9.52
Single-ended union
1/4"
Single-ended union
3/8"
φ
9.52
φ
12.7
φ
9.52
φ
8.0
φ
12.7
φ
12.7
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
6.35
φ
4.76
Charge port
  1/2"
φ
12.7
Compressor
Reversing
valve
– 150 –

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