CAUTION
• Use 2-core transmission wiring.
Using the same wire with 3 or more cores to connect 2 or more indoor units may cause them to stop
with an error.
• 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. (1,500m) when shielded wire is used.
• Be sure to use ring type crimp style terminals with insulation sleeves to
connect wires to the power supply terminal block. (Refer to Fig. 4.)
• Do not use with the power supply terminal block and ground terminal
connected to wiring for another circuit.
• Do not pre-solder stranded wire.
• Connect wires securely so that the terminals will not be subjected to external force.
• Use an appropriately sized screwdriver to tighten the terminal screws.
Use of a screwdriver that is too small could damage the screw head and prevent proper tightening.
• Overtightening the terminal screws could damage the screw.
Refer to the table for the terminal screw tightening torque.
Terminal screw size Tightening torque
M3.5
(transmission wire terminal block)
0.65 ± 0.05 ft·lbf
(0.88 ± 0.08 N·m)
M4
(power supply terminal block)
0.97 ± 0.09 ft·lbf
(1.31 ± 0.13 N·m)
M4
(ground terminal)
1.25 ± 0.12 ft·lbf
(1.69 ± 0.17 N·m)
• Never connect power supply wiring to the transmission wiring terminal block.
Doing so may damage the entire system.
• Transmission wiring cannot be branched again after the initial branch.
(Refer to Fig. 5.)
F1 F2 F1 F2 F1 F2
F1 F2F1 F2
Branch after initial branch
Branch
Fig. 5
Ring type crimp
style terminal
Electric wire
Insulation
sleeve
Fig. 4
14
3P405106-9 English
01_EN_3P405106-9.indb 14 3/27/2015 1:53:11 PM
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