Daikin REYQ-XA Service Manual page 74

1. Refrigerant Circuit .....................................................................................62
2. Functional Parts Layout ............................................................................74
3. Refrigerant Flow for Each Operation Mode...............................................78
61
Refrigerant Circuit
1.1 Outdoor Unit ............................................................................................... 62
1.2 Indoor Unit.................................................................................................. 65
1.3 Outdoor-Air Processing Unit....................................................................... 67
1.4 Branch Selector Unit .................................................................................. 68
2.1 REYQ72/96/120XATJU, REYQ72/96/120XAYDU,
REYQ72/96/120XAYCU............................................................................. 74
2.2 REYQ144/168XATJU, REYQ144/168XAYDU,
REYQ144/168XAYCU................................................................................ 76
3.1 Cooling Operation ...................................................................................... 78
3.2 Heating Operation ...................................................................................... 79
3.3 Simultaneous Cooling and Heating Operation ........................................... 80
3.4 Cooling Oil Return Operation ..................................................................... 81
3.5 Defrost Heating Oil Return Operation ........................................................ 82
3.6 Oil Return Operation at Simultaneous Cooling and Heating Operation ..... 83
SiUS371901E
Part 2
Refrigerant Circuit