Daikin VRV IV Series Installation Manual page 14

Table 6
Model Type
BSQ36TVJ
BSQ60TVJ VJ
BSQ96TVJ
MCA: Minimum Circuit Ampacity (A);
NOTE
• Table 6 of electrical characteristics refers to one Branch Selector unit.
• See the Engineering Data Book for other details.
6-4 Wiring example
WARNING
Install circuit protection safety devices in accordance with local and national codes.
Failure to install circuit protection safety devices in accordance with local and national codes may result in
electric shock or fire.
• Here is shown a wiring example for one system transmission wiring.
• Connect "TO IN/D UNIT (F1, F2)" terminals on the printed circuit board of the outdoor unit and "TO
OUT/D UNIT (F1, F2)" terminals on the printed circuit board of the first Branch Selector unit A.
Power supply
Outdoor unit
208/230V
(1)
B
L1 L2
F1 F2 F1 F2
TO IN/D UNIT TO OUT/D UNIT
Branch Selector
(1)
F1 F2
B : Circuit protection safety devices in accordance with local and national codes
NOTE
1. Connect cooling-dedicated air conditioners to "TO OUT/D UNIT (F1, F2)" terminals of the final Branch
Selector unit.
2. Use 2-core wire for the transmission wiring. Using a multi-core wire with 3 or more cores when 2 or
more indoor units are used at once could cause abnormal stoppage. (Only use 3-core wire in the
COOL/HEAT SELECTOR.)
3. Absolutely do not connect the power supply wiring to the transmission wiring terminal block. Doing so
could damage the entire system.
4. For the transmission wiring, use wire that is within the following ranges. Exceeding these limits could
cause a transmission error.
(1) Between the Branch Selector unit and indoor units: Max. 3,280 ft. (1,000 m)
Between the Branch Selector unit and outdoor unit: Max. 3,280 ft. (1,000 m)
Between Branch Selector units: Max. 3,280 ft. (1,000 m)
Total wiring length: 6,560 ft. (2,000 m) or less
Branch point max: 16 branch points
(2) Between a Branch Selector unit and COOL/HEAT SELECTOR
Maximum wiring length: 1,640 ft. (500 m) or less
5. When the shield wire is used, be sure to ground the one side of the
shield wire.
The total wiring length is 4,920 ft. (1,500 m) when shielded wire is used.
11
Units
Hz Voltage
60 208/230
MOP: Maximum Overcurrent Protective Device (A)
Absolutely do not
connect the power
supply wiring.
TO IN/D UNIT
F1 F2
(1)
A
B
F1 F2 F1 F2
(2)
TO IN/D UNIT TO OUT/D UNIT
C
Branch Selector
unit A
(1) (1)
A B C
F1 F2 F1 F2
COOL/HEAT
SELECTOR
Cooling/Heating selectable indoor unit
Voltage range
Min. Max.
187 253
Transmission wiring COOL/HEAT SELECTOR wiring
Use 2-core wires. Use 3-core wires. (There is polarity.
(There is no polarity.) Match the terminal numbers.)
(1)
A
B
(2)
C
Final Branch
unit B Selector unit
(1)
A B C
COOL/HEAT
SELECTOR
Power supply
MCA
0.1
(1)
A
B
F1 F2 F1 F2
(2)
TO IN/D UNIT TO OUT/D UNIT
C
F1 F2
A B C
F1 F2
F1 F2
COOL/HEAT
SELECTOR
Cooling-dedicated
indoor unit
branch
Sub-branching
F1 F2 F1 F2
F1 F2
3P405106-10 English
MOP
15
(1)
F1 F2
F1 F2