3P405106-10 English
11
Table 6
Units
Power supply
Model
Type
Hz
Voltage
Voltage range
Min.
Max.
MCA
MOP
BSQ36TVJ
BSQ60TVJ
BSQ96TVJ
VJ
60
208/230
187
253
0.1
15
MCA: Minimum Circuit Ampacity (A);
MOP: Maximum Overcurrent Protective Device (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.
F1 F2
F1
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
F2 F1 F2
F1 F2 F1 F2
F1 F2 F1 F2
A
A B C
A B C
A B C
B
C
A
B
C
A
B
C
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(2)
L1
B
208/230V
L2
Power supply
Absolutely do not
connect the power
supply wiring.
Transmission wiring
Use 2-core wires.
(There is no polarity.)
COOL/HEAT SELECTOR wiring
Use 3-core wires. (There is polarity.
Match the terminal numbers.)
Cooling/Heating selectable indoor unit
Cooling-dedicated
indoor unit
Outdoor unit
Branch Selector
unit A
Branch Selector
unit B
Final Branch
Selector unit
C/H SELECTOR
COOL/HEAT
SELECTOR
COOL/HEAT
SELECTOR
COOL/HEAT
SELECTOR
C/H SELECTOR
C/H SELECTOR
TO IN/D UNIT TO OUT/D UNIT
TO IN/D UNIT TO OUT/D UNIT
TO IN/D UNIT TO OUT/D UNIT
TO IN/D UNIT
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.
F1 F2
F1F2
F1F2
F1F2
F1F2
branch
Sub-branching
01_EN_3P405106-10.indb 11
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