Daikin VRV RXYQ72-384XAYCA Service Manual page 39

SiUS342004EB
1. Refrigerant Circuit (Piping Diagrams) .......................................................33
2. Functional Parts Layout ............................................................................42
3. Refrigerant Flow for Each Operation Mode...............................................46
Part 2 Refrigerant Circuit
Refrigerant Circuit
1.1 Outdoor Unit ............................................................................................... 33
1.2 Indoor Unit.................................................................................................. 37
1.3 Indoor Low-Temperature Hydrobox ........................................................... 40
1.4 Outdoor-Air Processing Unit....................................................................... 41
2.1 RXYQ72-120XA, RXYQ72-120XB ............................................................. 42
2.2 RXYQ144/168XA, RXYQ144/168XB ......................................................... 44
3.1 Cooling Operation ...................................................................................... 46
3.2 Heating Operation ...................................................................................... 47
3.3 Cooling Oil Return Operation ..................................................................... 48
3.4 Defrost Heating Oil Return Operation ........................................................ 49
Part 2
32