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SiBE18-821_C
Refrigerant Circuit
65
Part 4
Refrigerant Circuit
1. Refrigerant Circuit .................................................................................66
1.1
Outdoor Unit ...........................................................................................66
1.2
BP Unit ...................................................................................................68
2. Functional Parts Layout ........................................................................69
2.1
Outdoor Unit ...........................................................................................69
3. Refrigerant Flow for Each Operation Mode...........................................71
3.1
Cooling Operation ..................................................................................71
3.2
Heating Operation ..................................................................................72
3.3
Cooling Oil Return Operation .................................................................73
3.4
Heating Oil Return Operation & Defrost Operation ................................74