Other Control
SiUS39-601
54
Function
5.
Other Control
5.1
Outdoor Unit Rotation
In the case of multi-outdoor-unit system, this outdoor unit rotation is used to prevent the
compressor from burning out 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.
Outdoor unit rotation makes it possible to change the operating priority of outdoor units.
Thus, the system becomes free of compressors that stop over an extended period of time at the
time of partial loading, preventing unbalanced oil level.
[Timing of outdoor unit rotation]
After oil return operation
After defrosting operation
At the beginning of the starting control
Example) The following diagram shows outdoor unit rotation in combination of 3 outdoor units.
*
“Master unit” and “slave unit” 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 display on the main PCB for “master unit”, “slave unit” do not change.
(Refer to the page 56.)
or
Normal operation
Starting
control
Outdoor unit
rotation
Oil return operation
or defrosting
operation
Priority
1
Priority
2
Outdoor unit
rotation
Priority
2
Priority
1
Normal operation
Normal operation
Oil return operation
or defrosting
operation
Outdoor unit
rotation
Priority
1
Priority
2
Normal operation
Priority
2
Priority
1
Master Slave
Master Slave
Master Slave
Master Slave
Содержание RXYQ72
Страница 16: ...SiUS39 601 Specifications 5 Part 2 Specifications 1 Specifications 6 1 1 Outdoor Units 6 1 2 Indoor Units 11...
Страница 115: ...Field Setting SiUS39 601 104 Test Operation...
Страница 227: ...Troubleshooting OP Unified ON OFF Controller SiUS39 601 216 Troubleshooting...
Страница 231: ...Piping Diagrams SiUS39 601 220 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ72M 96M...
Страница 235: ...Wiring Diagrams for Reference SiUS39 601 224 Appendix 2 2 Field Wiring RXYQ72 96MTJU C 3D042647B...
Страница 236: ...SiUS39 601 Wiring Diagrams for Reference Appendix 225 RXYQ144 168 192MTJU C 3D050353A...
Страница 239: ...Wiring Diagrams for Reference SiUS39 601 228 Appendix FXAQ07M 09M 12M 18M 24MVJU FXHQ12M 24M 36M 3D046039C 3D048116...
Страница 240: ...SiUS39 601 Wiring Diagrams for Reference Appendix 229 FXLQ12M 18M 24MVJU FXNQ12M 18M 24MVJU 3D045644A...
Страница 249: ...Example of Connection SiUS39 601 238 Appendix...
Страница 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 601 244 Appendix...
Страница 265: ...Precautions for New Refrigerant R 410A SiUS39 601 254 Precautions for New Refrigerant R 410A...
Страница 269: ...SiUS39 601 iv Index...