Si39-303
Test Operation
General Information
93
4.4.2.3
Setting of Low Noise Operation and Demand Operation
Setting of Low Noise Operation
By connecting the external contact input to the low noise input of the outdoor unit external
control adapter (optional), you can lower operating noise by 2-3 dB.
A. When the low noise operation is carried out by external instructions (with the use
of the outdoor unit external control adapter)
1. Set “External low noise / Demand YES/NO setting” to “External low noise / Demand YES”.
(Set by Setting Mode 2)
2. Set “External low noise level setting” on the outdoor unit PC board, as the need arises.
(Lower noise operation can be carried out by “Mode 2” than by “Mode 1”, and by “Mode 3”
than by “Mode 2”.)
3. Set “Capacity precedence setting” on the outdoor unit PC board, as the need arises.
(If set to “ON”, when air conditioning load gets higher, the low noise instructions are
neglected to switch to normal operation.) (Set by Setting Mode 2)
B. When the low noise operation is carried out automatically at night (The outdoor unit
external control adapter is not required)
1. Set “Night-time low noise setting” on the outdoor unit PC board. (Set by Setting Mode 2)
(Lower noise operation can be carried out by “Mode 2” than by “Mode 1”, and by “Mode 3”
than by “Mode 2”.)
2. Set “Night-time low noise start setting” on the outdoor unit PC board, as the need arises.
(Set by Setting Mode 2)
(Since the time is presumed in accordance with the outdoor temperature, the starting time is
a target only.)
3. Set “Night-time low noise end setting” on the outdoor unit PC board, as the need arises.
(Set by Setting Mode 2)
(Since the time is presumed in accordance with the outdoor temperature, the ending time is
a target only.)
4. Set “Capacity precedence setting” on the outdoor unit PC board, as the need arises.
(Set by Setting Mode 2)
(If set to “ON”, when air conditioning load gets higher, the status is switched to normal
operation even at night.)
Summary of Contents for VRV II Series
Page 6: ...Si39 303 iv Table of Contents...
Page 31: ...Si39 303 Installation General Information 25 Flaring Procedure...
Page 124: ...Appendix Si39 303 118 General Information 3P114237A...
Page 141: ...Si39 303 Appendix General Information 135 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 4D040338A...
Page 142: ...Appendix Si39 303 136 General Information RXYQ14MY1B RXYQ16MY1B 4D040339A...
Page 144: ...Appendix Si39 303 138 General Information 7 11 Wiring Diagrams 7 11 1 Outdoor Unit RXYQ5MY1B...
Page 145: ...Si39 303 Appendix General Information 139 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 3D038582...
Page 146: ...Appendix Si39 303 140 General Information RXYQ14MY1B RXYQ16MY1B 3D038058...
Page 147: ...Si39 303 Appendix General Information 141 7 11 2 Field Wiring RXYQ5 16MY1B 3D040746...
Page 148: ...Appendix Si39 303 142 General Information RXYQ18 32MY1B 3D040747...
Page 149: ...Si39 303 Appendix General Information 143 RXYQ34 48MY1B 3D040748...
Page 158: ...Appendix Si39 303 152 General Information...
Page 180: ...Refrigerant Piping Si39 303 174 Installation Manual...
Page 226: ...Troubleshooting Si39 303 220 Operation Manual...