Daikin R407C PLUS - Page 54

Si33-105 Refrigerant System Diagram
Function R407C PLUS Series Heat Recovery System 43
1.3.5 Oil Return Operation-Suction (at Cooling and Heating and
Simultaneous Cooling / Heating Operation or Defrost Operation)
Indoor unit Indoor unit
BS unit BS unit
Main unit
Sub unit
Hex.3
(Y3E)
20E3
Hex. 1
20E1(Y1E)
0 pls
0 pls
20E2
(Y2E)
Hex. 2
20S1(Y1R)
20S2 (R1R)
20S3
(Y3R)
Y5S
(3D031938-4)
High pressure & high temperature gas refrigerant High pressure & high temperature liquid refrigerant Low pressure & low temperature liquid & gas refrigerant