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9. WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER
9-1 HOW TO CONNECT WIRINGS
〈 〈 〈 〈 Method of wiring power supply, units and connecting remote controller cords〉 〉 〉 〉 (Refer to Fig. 26)
• Power wire
Hold the switchbox lid and loosen the anchoring screws (2 pc.), then remove the switchbox lid. Align the
phase and connect the wire to the power terminal block (6P) inside the switchbox. After connecting, use the
included clamps (4) to bind the wire, together with the ground wire, to the anchor. (Refer to Fig. 27)
• Remote control wire and connecting wire
Hold the switchbox lid and loosen the anchoring screws (2 pc.), then remove the switchbox lid. Connect the
wires to the power terminal block (6P) inside the switchbox. After connecting, use the included clamps (4)
to bind the remote control wire, together with the connecting wire, to the anchor. (Refer to Fig. 27)
CAUTION
• When cramping wiring, use the included cramping material to do an appropriate cramp to prevent undue
pressure on the wiring connections. When carrying out the wiring, bundle the wires to prevent the switch
box lid from lifting, and attach the lid firmly. When attaching the switch box avoid getting wires caught always
use a wiring through-lid to prevent damage to the wires.
• Make sure to avoid external force to the field wiring(∗) such as by laying them in protection pipes or in the
wall. (Refer to Fig. 26)
[ PRECAUTIONS ]
1. Use ring-type crimp-style terminals for connecting
wires to the power supply terminal board. If
unavailable, observe the following points when
wiring.
• Do not connect wires of different gauge to the
same power supply terminal. (Looseness in the
connection may cause overheating.)
• When connecting wires of the same gauge, con-
nect them according to the right-hand figure.
• Use the specified electric wire. Connect the wire
securely to the terminal. Lock the wire down
without applying excessive force to the terminal.
2. Keep total current of crossover wiring between
indoor units less than 12 A.
Branch the line outside the terminal board of the
unit in accordance with electrical equipment standards, when using two power wiring of a gauge greater
2
than 2 mm
(φ1.6).
The branch must be sheathed to provide an equal or greater degree of insulation as the power supply wir-
ing itself.
3. Do not connect wires of different gauge to the same grounding terminal. Looseness in the connection may
deteriorate protection.
4. Keep transmission wiring at least 50 mm away from power supply wiring. The equipment may malfunction
if subjected to electrical (external) noise.
5. For remote controller wiring, refer to the "INSTALLATION MANUAL OF REMOTE CONTROLLER"
attached to the remote controller.
6. Never connect power supply wiring to the terminal board for transmission wiring. A mistake of the
sort could damage the entire system.
7. Use only specified wire and tightly connect wires to terminals. Be careful wires do not place external stress
on terminals. Keep wiring in neat order and so as not to obstruct other equipment such as popping open
the service cover. Make sure the cover closes tight. Incomplete connections could result in overheating,
and in worse case, electric shock or fire.
13
Ring-type
crimp-style
terminal
Connect wires of the
Do not connect wires
same gauge to both
of the same gauge to
side. (GOOD)
one side. (WRONG)
Good
Wrong
Electric wire
Do not connect wires
of different gauges.
(WRONG)
Wrong
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