Daikin BSVQ36PVJU, Installation Manual

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13 English
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 outside 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 outside unit and indoor unit are properly matched. If wiring and piping between the out-
side 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 the ground fault
circuit interrupter.
• 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.
Power supply wiring
Transmission wiring
Switch
Fuse
Outside unit
Power supply
Power supply
Main switch
Main switch
BS unit
Indoor unit
Remote controller
Cooling/Heating selectable indoor unit
Cooling-dedicated
indoor unit