Table of Contents
Advertisement
Precautions to be taken for power supply wiring
Use a round crimp-style terminal for connection to the power supply terminal block.
In case it cannot be used due to unavoidable reasons, be sure to observe the following instructions.
(Refer to Fig. 29)
• Do not connect wires of different gauge to the same power supply terminal. (Looseness in the connection
may cause overheating.) (Refer to Fig. 30)
• When connecting wires of the same gauge, connect them according to. (Refer to Fig. 30)
• In wiring, make certain that prescribed wires are used, carry out complete connections, and fix the wires so
that external forces are not applied to the terminals.
Connect wires of the
same gauge to both
side. (GOOD)
Tightening torque for the terminal screws.
• 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 screws are tightened too hard, screws might be damaged.
Refer to the table below for the tightening torque of the terminal screws.
Terminal block for remote controller
Terminal block for wiring the units
Earth terminal
• If the strand wire is used, do not solder it.
9. WIRING EXAMPLE
CAUTION
Be sure to install an earth leakage breaker to the outdoor unit.
Installation of an earth leakage breaker is mandated to avoid electric shocks or fire.
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. 31)
• Group control: 1 remote controller controls up to 16 indoor units. (All indoor units operate according to the
remote controller) (Refer to Fig. 32)
• 2 remote controllers control: 2 remote controllers control 1 indoor unit. (Refer to Fig. 34)
<Usage Restriction of Cord>
Do not use cords for the transmission wiring.
Ex: VCTF (not allowed), VV cable (allowed)
20
Round crimp-style terminal
Do not connect wires
of the same gauge to
one side. (WRONG)
Good
Tightening torque (N·m)
Attach insulation sleeve
Fig. 29
Do not connect wires
of different gauges.
(WRONG)
Wrong
Fig. 30
Electric wire
Wrong
0.79 to 0.97
1.18 to 1.44
1.18 to 1.44
English
Advertisement
Table of Contents
