SiUS371901E
Field Settings for Outdoor Unit
Field Settings and Test Operation
218
2.7
Night-Time Low Noise Operation and Demand Operation
2.7.1 Night-Time Low Noise Operation
By connecting the external contact input to the low noise input of the outdoor unit external control adaptor
(optional), you can lower operating noise.
A. When night-time low noise operation is carried out by external contact (with the use of the external
control adaptor for outdoor unit)
1. Connect external control adaptor for outdoor unit and short circuit terminal of night-time low noise operation
(Refer below figure).
If carrying out demand or low noise input, connect the adaptor’s terminals as shown below.
2. While in setting mode 2, set the item 2-12 (External low noise or demand setting) to ON.
3. If necessary, while in setting mode 2, select an external low noise level for the item 2-25.
4. If necessary, while in setting mode 2, set the item 2-29 (Capacity priority setting) to ON.
(If the condition is set to ON, when the air conditioning load reaches a high level, the low noise operation
command will be ignored to put the system into normal operation mode.)
B. When night-time low noise operation is carried out automatically (External control adaptor for
outdoor unit is not required)
1. While in setting mode 2, select a night-time low noise operation level for the item 2-22.
2. If necessary, while in setting mode 2, select a starting time of night-time low noise operation (i.e., 8:00 PM,
10:00 PM, or 12:00 AM) for the item 2-26.
(Use the starting time as a guide since it is estimated according to outdoor temperatures.)
3. If necessary, while in setting mode 2, select an ending time of night-time low noise operation (i.e., 6:00 AM,
7:00 AM, or 8:00 AM) for the item 2-27.
(Use the ending time as a guide since it is estimated according to outdoor air temperatures.)
4. If necessary, while in setting mode 2, set the item 2-29 (Capacity priority setting) to ON.
(If the condition is set to ON, when the air conditioning load reaches a high level, the system will be put into
normal operation mode even during night-time.)
Setting
Content
Level 1
Set the outdoor fan to Step 6 or lower.
Level 2
Set the outdoor fan to Step 5 or lower.
Level 3
Set the outdoor fan to Step 4 or lower.
Outdoor wiring indicated
by dotted line
External control
adaptor for
outdoor unit
Host computer
monitor panel
or demand
controller
X
X
X
X
F1
F2
P3
P4
F1
F2
P3
P4
X
X
X
X
X
X
1
2
3
C
Demand
Low
noise
Summary of Contents for REYQ-XA
Page 1: ...Service Manual SiUS371901E REYQ72 456XATJU REYQ72 456XAYDU REYQ72 432XAYCU Heat Recovery 60 Hz...
Page 415: ...SiUS371901E Wiring Diagrams Appendix 402 REYQ144 168XATJU 2D119206A...
Page 416: ...Wiring Diagrams SiUS371901E 403 Appendix REYQ72 96 120XAYDU 2D119207B...
Page 417: ...SiUS371901E Wiring Diagrams Appendix 404 REYQ144 168XAYDU 2D119208B...
Page 418: ...Wiring Diagrams SiUS371901E 405 Appendix REYQ72 96 120 144 168XAYCU 2D119209A...
Page 421: ...SiUS371901E Wiring Diagrams Appendix 408 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 423: ...SiUS371901E Wiring Diagrams Appendix 410 FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 425: ...SiUS371901E Wiring Diagrams Appendix 412 FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU C 3D110467C...
Page 426: ...Wiring Diagrams SiUS371901E 413 Appendix FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Page 428: ...Wiring Diagrams SiUS371901E 415 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 429: ...SiUS371901E Wiring Diagrams Appendix 416 FXAQ07 09 12 18 24PVJU C 3D075354D...
Page 435: ...SiUS371901E Wiring Diagrams Appendix 422 VAM1200GVJU 3D073270D...
Page 437: ...SiUS371901E Wiring Diagrams Appendix 424 1 4 2 Multi Branch Selector Unit BS4Q54TVJ 3D089123B...
Page 438: ...Wiring Diagrams SiUS371901E 425 Appendix BS6 8Q54TVJ 2D089122B...
Page 439: ...SiUS371901E Wiring Diagrams Appendix 426 BS10 12Q54TVJ 2D089121B...
Page 440: ...Revision History Month Year Version Revised contents 04 2019 SiUS371901E First edition...
