Table of Contents
Advertisement
5
Electric wiring
WARNING
The appliance shall be installed in accordance with national wiring regulations.
Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire.
CAUTION
Perform wiring of power supply complying with the rules and regulations of the local electric company.
Refer to H07RN-F or 60245 IEC 66 regarding specifications of the power supply wire.
Do not connect 380 V - 415 V power to the terminal blocks for control cables (U1, U2, U3, U4, U5, U6); otherwise, the unit may break
down.
Be sure that electric wiring does not come into contact with high-temperature parts of piping; otherwise, the coating of cables may
melt and cause an accident.
After connecting wires to the terminal block, take off the traps and fix the wires with cord clamps.
Follow the same structure for both the control wiring and refrigerate piping.
Do not conduct power to indoor units until vacuuming of the refrigerant pipes has finished.
Refer to the installation manuals of indoor unit and flow selector unit for power wiring and communication wiring of indoor unit and
flow selector unit.
Communication wiring and central control wiring use 2-core non-polarity wires. Use 2-core shield wires to prevent noise trouble.
Connecting the closed end terminal of shield wire. (Connected to all connecting sections in each unit)
Use 2-core non-polarity wire for remote controller. (A, B terminals) Use 2-core non-polarity wire for wiring of group control. (A, B
terminals)
Table-1 Communication wiring between indoor and outdoor units (L1, L2, L3), Central control wiring (L4)
Wiring
2-core, non-polarity
Type
Shield wire
1.50mm
Size / Length
2.50mm
(*1): Total length of Communication wiring length for all refrigerant circuits (L1 + L2 + L3 + L4)
Table-2 Communication wiring between outdoor units (L5)
Wiring
2-core, non-polarity
Type
Shield wire
Size / Length
1.50mm
Table-3 Remote controller wiring (L6, L7)
Wire
2-core, non-polarity
Size
1.50mm
Up to 500m (L6 + L7)
Length
Up to 400m in case of wireless remote controller in group control.
Up to 200m total length of communication wiring between indoor units L6
2
2
(min. 1.25 mm
): Up to 1000m
2
2
(min. 2.00 mm
): Up to 2000m (*1)
2
2
2
(min.1.25 mm
to 2.0 mm
) up to 100m (L5)
2
2
2
(min. 0.5 mm
to 2.0 mm
)
[13]
Advertisement
Table of Contents
