Installation manual

English 17
• Do not connect wires of different gauge to the same power supply terminal. (Looseness in the connection
may cause overheating.) (Refer to Fig. 28)
• Observe the notes when wiring to the terminal block for wiring the units.
(Use a round crimp-style terminal with insulation sleeve for connection to the terminal block for wiring the
units. In case it cannot be used due to unavoidable reasons, connect wires of the same gauge to the both
side as shown in Fig. 28.)
Follow the instructions below if the wiring gets very hot due to slack in the power wiring.
• In wiring, make certain that prescribed wires are used, carry out complete connections, and fix the wires so
that outside forces are not applied to the terminals.
• Use the correct screwdriver for tightening the terminal screws. If the blade of screwdriver is too small, the
head of the screw might be damaged, and the screw will not be properly tightened.
• If the terminal screw are tightened too hard, screws might be damaged.
• Refer to the table below for the tightening torque of the terminal screws.
9. WIRING EXAMPLE
For the wiring of outdoor units, refer to the installation manual attached to the outdoor units.
Confirm the system type.
•Pair type: 1 remote controller controls 1 indoor unit. (standard system) (Refer to Fig. 29)
• Simultaneous operation system: 1 remote controller controls 2 indoor units. (2 indoor units operates
equally) (Refer to Fig. 30)
• Group control: 1 remote controller controls up to 16 indoor units. (All indoor units operate according to the
remote controller) (Refer to Fig. 31)
• 2 remote controllers control: 2 remote controllers control 1 indoor unit. (Refer to Fig. 32)
Tightening torque (N·m)
Terminal block for remote controller 0.79 to 0.97
Terminal block for wiring the units 1.18 to 1.44
Ground terminal 1.44 to 1.94
Electric wire
Attach insulation sleeve
Round crimp-style terminal
Fig. 27
Good Wrong Wrong
Connect wires of the
same gauge to both
side. (GOOD)
Do not connect wires
of the same gauge to
one side. (WRONG)
Do not connect wires
of different gauges.
(WRONG)
Fig. 28
01_EN_3P184443-6.fm Page 17 Monday, July 3, 2006 12:04 PM