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