6-2 Example for the whole system
Power supply
Indoor unit
Indoor unit
Remote controller
Remote controller
Remote controller
Power supply
Outdoor unit
Main
switch
Main
switch
Power supply wiring
Transmission wiring
Circuit protection
safety devices in
accordance with local
and national codes
BS4Q unit
BS4Q unit
Cooling-dedicated
indoor unit
6-3 Power circuit, safety device and cable requirements
•
A power circuit (refer to Table 6) must be provided for connection of the unit. The circuit must be protected
with safety devices in accordance with local and national codes i.e a fuse, a circuit breaker or a GFCI.
• When using residual current operated circuit breakers, be sure to use a high-speed type (0.1 second or
less) 30mA rated residual operating current.
• Use copper conductors only.
• Use insulated wire for the power cord.
• Select the power supply cable type and size in accordance with relevant local and national regulations.
• Use vinyl cord with sheath or cable (2 wire) of AWG 18 - 16 for transmission wiring.
• The transmission wire lengths are as follows:
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
Table 6
Units
Power supply
Model Type Hz Voltage
Voltage range
Min. Max. MCA MOP
BS4Q54TVJ
VJ 60 208/230 187 253
0.4
15
BS6Q54TVJ 0.6
BS8Q54TVJ 0.8
BS10Q54TVJ 1.0
BS12Q54TVJ 1.2
MCA: Minimum Circuit Ampacity (A); MOP: Maximum Overcurrent Protective Device (A)
NOTES
• The above Table 6 of electrical characteristics refers to one Branch Selector unit.
12
3P405106-9 English
01_EN_3P405106-9.indb 12 3/27/2015 1:53:11 PM
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