Special Control
SiUS341802EC
107
Part 4 Functions and Control
Note(s)
7.4 Outdoor Unit Rotation
In the case of multi outdoor unit system, this outdoor unit rotation prevents the compressor from
breaking down due to unbalanced oil level between outdoor units.
Details of outdoor unit rotation
In the case of multi outdoor unit system, each outdoor unit is given an operating priority for the
control.
The operating priority of outdoor units is changed by outdoor unit rotation. The outdoor unit rotation
prevents unbalanced oil level between outdoor units by eliminating the long stop of compressors
during partial load.
Timing of outdoor unit rotation
At the beginning of the startup control, or;
After oil return operation, or;
After defrost operation, or;
One of the outdoor units is stopped for 20 minutes or more (only in cooling).
Example) The following diagram shows outdoor unit rotation in combination of 3 outdoor units.
Master unit, slave unit 1 and slave unit 2 in this section are the names for installation.
They are determined in installation work, and not changed thereafter. (These names are different
from master unit and slave unit for control.)
The outdoor unit connected the control wires (F1 and F2) for the indoor unit should be designated
as master unit.
Consequently, the LED displays on the outdoor unit main PCB for master unit, slave unit 1 and
slave unit 2 do not change.
Normal control
Normal control
Normal control
Normal control
Master Slave 1 Slave 2
Master Slave 1 Slave 2
Master Slave 1 Slave 2
Master Slave 1 Slave 2
A
A
Startup control
Outdoor unit
rotation
Outdoor unit
rotation
Outdoor unit
rotation
Priority
1
Priority
1
Priority
2
Priority
2
Priority
3
Priority
3
Priority
1
Priority
2
Priority
3
Priority
3
Priority
1
Priority
2
Oil return operation
or defrost operation
Any of outdoor
unit stops for a
period of 20
minutes or more.
Содержание VRV Aurora RXLQ-TATJU Series
Страница 376: ...Check SiUS341802EC 369 Part 6 Service Diagnosis Reference Reference CHECK 7 Refer to page 378 CHECK 8 Refer to page 379...
Страница 405: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 398 1 Wiring Diagrams 1 1 Outdoor Unit RXLQ72TATJU RXLQ72TATJA 2D112580C...
Страница 407: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 400 RXLQ96 120TATJU RXLQ96 120TATJA 2D112581C...
Страница 409: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 402 RXLQ72TAYDU RXLQ72TAYDA 2D112582D...
Страница 411: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 404 RXLQ96 120TAYDU RXLQ96 120TAYDA 2D112583D...
Страница 417: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 410 FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...
Страница 418: ...Wiring Diagrams SiUS341802EC 411 Part 7 Appendix BYCQ125BGW1 Self Cleaning Decoration Panel for FXFQ T 3D076375A...
Страница 420: ...Wiring Diagrams SiUS341802EC 413 Part 7 Appendix FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Страница 425: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 418 FXEQ07 09 12 15 18 24PVJU 3D098557A...
Страница 426: ...Wiring Diagrams SiUS341802EC 419 Part 7 Appendix FXDQ07 09 12 18 24MVJU C 3D050501C...
Страница 427: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 420 FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU C 3D110467C...
Страница 429: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 422 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Страница 433: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 426 FXHQ12 24 36MVJU 3D048116C...
Страница 434: ...Wiring Diagrams SiUS341802EC 427 Part 7 Appendix FXAQ07 09 12 18 24PVJU 3D075354F...
Страница 441: ...SiUS341802EC Wiring Diagrams Part 7 Appendix 434 VAM1200GVJU 3D073270D...