Detailed Control Functions
SiBE341001
47
Function
2.6
Protection Control
2.6.1 High Pressure Protection Control
This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of
high pressure and to protect compressors against the transient increase of high pressure.
[In cooling operation]
★
In case of multi-outdoor-unit system, the following control is performed in the entire system.
Pc_max indicates the maximum value within the system.
[Heating Operation and Simultaneous Cooling / Heating Operation]
★
In case of multi-outdoor-unit system, the following control is performed in the entire system.
Pc_max indicates the maximum value within the system.
Normal Operation
Pc_max > 3.47 MPa
Compressor step = Max. Step
Compressor system:
2 step down / 10 sec.
Compressor system: Step 1
Compressor system:
1 step up / 15 sec.
· Pc_max < 3.24 MPa
· After 15 sec.
&
· Pc_max > 3.47 MPa
· After 15 sec.
&
• Pc_max > 3.55 MPa
• After 10 sec.
&
Pc_max > 3.64 MPa
HPS (4.0 MPa) is activated
Restart standby
(2 times per 30 min. at max.)
Stop due to malfunction
(E3 displayed)
Normal Operation
Pc_max > 3.04 MPa
Compressor step = Max. Step
Compressor system:
2 step down / 10 sec.
Compressor system: Step 1
Compressor system:
1 step up / 10 sec.
Pc_max < 2.79 MPa
• Pc_max > 3.12 MPa
• After 10 sec.
&
Pc_max > 3.20 MPa
HPS (4.0 MPa) is activated
Restart standby
(2 times per 30 min. at max.)
Stop due to malfunction
(E3 displayed)
Summary of Contents for RQYQ140-180PY1
Page 216: ...Piping Diagrams SiBE341001 207 Appendix 1 2 BS Unit BSVQ100 160 250PV1 4D057985B...
Page 217: ...SiBE341001 Piping Diagrams Appendix 208 BSV4Q100PV1 3D064148...
Page 218: ...Piping Diagrams SiBE341001 209 Appendix BSV6Q100PV1 3D064149...
Page 220: ...Wiring Diagrams for Reference SiBE341001 211 Appendix 2 2 BS Unit BSVQ100 160 250PV1 3D055928C...
Page 221: ...SiBE341001 Wiring Diagrams for Reference Appendix 212 BSV4Q100PV1 3D063928B...
Page 222: ...Wiring Diagrams for Reference SiBE341001 213 Appendix BSV6Q100PV1 3D063929B...
Page 223: ...SiBE341001 Option List Appendix 214 3 Option List 3 1 Option Lists Outdoor Unit 3D066354...