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7. ELECTRIC WIRING WORK
7-1 GENERAL INSTRUCTIONS
• All wiring must be performed by an authorized electrician.
• All field supplied parts and materials, electric works must conform to local codes.
• Always ground wires. (In accordance with national regulations of the pertinent country.)
• Always turn off the power before performing the electric wire installation work.
• Follow the "WIRING DIAGRAM" attached to the unit body to wire the outdoor unit and indoor units.
• Properly connect wire of the specified wire type and copper thickness. Also use the included clamp to avoid
applying excessive force to the terminal (field wire, ground wire).
• Do no let the ground wire should come in contact with gas pipes, water pipes, lighting rods, or telephone
ground wires.
• Gas pipes: gas leaks can cause explosions and fire.
• Water pipes: cannot be grounded if hard vinyl pipes are used.
• Telephone ground and lightning rods: the ground potential when struck by lightning gets extremely high.
• A circuit breaker capable of shutting down the power supply to the entire system must be installed.
• This system consists of multiple BS units. Mark each BS unit as unit A, unit B . . . , and be sure the terminal
board wiring to the outdoor unit and indoor unit are properly matched. If wiring and piping between the
outdoor unit, BS unit and an indoor unit are mismatched, the system may cause a malfunction.
• Do not turn on the power supply (branch switches, overload interrupters) until all other work is done.
7-2 EXAMPLE FOR THE WHOLE SYSTEM
7-3 POWER CIRCUIT, SAFETY DEVICE AND CABLE REQUIREMENTS
• A power circuit (Refer to Table 3) must be provided for connection of the unit. This circuit must be protected with the
required safety devices, i.e. a main switch, a slow blow fuse on each phase and an earth leakage circuit breaker.
• A main switch or other means for disconnection, having a contact separation in all poles, must be incorporated in
the fixed wiring in accordance with relevant local and national legislation.
• 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.
• Specifications for local wiring are in compliance with IEC60245.
• Use wire type H05VV-U3G for power supply wiring. And the size must comply with local codes.
• Use vinyl cord with sheath or cable (2 wire) of 0.75-1.25mm
Table 3
Model
Type
BS1Q10
BS1Q16
V1
BS1Q25
MCA: Min. Circuit Amps (A);
English
Power supply
Main switch
Power supply
Main switch
BS unit
Indoor unit
Remote controller
Cooling/Heating selectable indoor unit
Units
Hz
Voltage
50
MFA: Max. Fuse Amps (A)
Outdoor unit
Switch
Fuse
2
for transmission wiring.
Min.
220
230
198
240
Power supply wiring
Transmission wiring
Cooling-dedicated
indoor unit
Power supply
Max.
MCA
264
0.1
MFA
15
13
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