
Si39-303
Field Wiring
Installation Manual
187
Caution
Be sure to follow the limits below. If the unit-to-unit cables are beyond these limits, it may result
in malfunction of transmission.
Maximum wiring length: 1000m
Total wiring length: 2000m
Max branches No. of branches: 16
Max. number of outdoor units connectable: 10 or less
Up to 16 branches are possible for unit-to unit cabling. No branching is allowed after branching.
Max. number of outdoor units connectable: 10 or less
Never connect the power supply to unit-to-unit cabling terminal block. Otherwise the entire
system may break down.
Sequential start
Make the outdoor unit cable connections shown below.
The outdoor unit PC board (A1P) is factory set at “Sequential start available“.
Setting the cool/heat operation (heat pump unit only)
1. Performing cool/heat setting with the remote controller connected to the indoor unit.
Keep the cool/heat selector switch (DS1) on the outdoor unit PC board (A1P) at the factory
setting position IN/D UNIT.
2. Performing cool/heat setting with the cool/heat selector.
Connect the cool/heat selector remote controller (optional) to the A/B/C terminals and set the
cool/heat selector switch (DS1) on the outdoor unit PC board (A1P) to OUT/D UNIT.
1. Branch
2. Subbranch
2
1
TO IN/D
UNIT
F1 F2
DS1
1
2
3
4
OFF
ON
O
U
T
I
N
F1 F2
F1 F2
F1 F2
Remote controller
A B C
A B C
DS1
1
2
3
4
OFF
ON
O
U
T
I
N
Cool/heat selector
Содержание VRV II Series
Страница 6: ...Si39 303 iv Table of Contents...
Страница 31: ...Si39 303 Installation General Information 25 Flaring Procedure...
Страница 124: ...Appendix Si39 303 118 General Information 3P114237A...
Страница 130: ...Appendix Si39 303 124 General Information BHFP22M135 Refer P 120 for Table 7 8 and 9 After connection piping...
Страница 140: ...Appendix Si39 303 134 General Information 7 10 Piping System Diagrams 7 10 1 Outdoor Unit RXYQ5MY1B...
Страница 141: ...Si39 303 Appendix General Information 135 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 4D040338A...
Страница 142: ...Appendix Si39 303 136 General Information RXYQ14MY1B RXYQ16MY1B 4D040339A...
Страница 144: ...Appendix Si39 303 138 General Information 7 11 Wiring Diagrams 7 11 1 Outdoor Unit RXYQ5MY1B...
Страница 145: ...Si39 303 Appendix General Information 139 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 3D038582...
Страница 146: ...Appendix Si39 303 140 General Information RXYQ14MY1B RXYQ16MY1B 3D038058...
Страница 147: ...Si39 303 Appendix General Information 141 7 11 2 Field Wiring RXYQ5 16MY1B 3D040746...
Страница 148: ...Appendix Si39 303 142 General Information RXYQ18 32MY1B 3D040747...
Страница 149: ...Si39 303 Appendix General Information 143 RXYQ34 48MY1B 3D040748...
Страница 158: ...Appendix Si39 303 152 General Information...
Страница 180: ...Refrigerant Piping Si39 303 174 Installation Manual...
Страница 226: ...Troubleshooting Si39 303 220 Operation Manual...