Startup Control
SiUS372201EA
127
Part 4 Functions and Control
4. Startup Control
This control is used to equalize the pressure in the suction and discharge sides of the compressor
prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is
turned ON to charge the capacitor.
To avoid stresses to the compressor due to liquid refrigerant return or else after the startup, the
following control is made and the position of the four way valve is also determined. Start both the
master and the sub units simultaneously to position the four way valve.
DSH: Discharge pipe superheating degree
Pc: High pressure sensor detection value
Pe: Low pressure sensor detection value
Ta: Outdoor air temperature
Summary of Contents for REYQ-AATJA
Page 1: ...Service Manual Heat Recovery 60 Hz REYQ AATJA 208 230 V REYQ AAYDA 460 V SiUS372201EA...
Page 465: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 458 BS6 8Q54TVJ 2D089122B...
Page 466: ...Wiring Diagrams SiUS372201EA 459 Part 7 Appendix BS10 12Q54TVJ 2D089121B...
Page 469: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 462 BSF6 8Q54TVJ 2D123905A...
Page 472: ...Wiring Diagrams SiUS372201EA 465 Part 7 Appendix FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 476: ...Wiring Diagrams SiUS372201EA 469 Part 7 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 477: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 470 FXDQ07 09 12 18 24MVJU C 3D050501C...
Page 483: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 476 FXHQ12 24 36MVJU 3D048116C...
Page 484: ...Wiring Diagrams SiUS372201EA 477 Part 7 Appendix FXAQ07 09 12 18 24PVJU 3D075354F...
Page 490: ...Wiring Diagrams SiUS372201EA 483 Part 7 Appendix VAM1200GVJU 3D073270D...