8
CAUTION
• Be sure to attach the sealing material or putty (field supplied)
to the hole for wiring to prevent the infiltration of water as well
as any insects and other small creatures from outside. Oth-
erwise a short-circuit may occur inside the electric parts box.
• When clamping the wirings, be sure no tension is applied to
the wire connections by using the included clamps. Also,
when wiring, make sure the electric parts box lid fits snugly
by arranging the wirings neatly and attaching the electric
parts box lid firmly. When attaching the electric parts box lid,
make sure no wirings get caught in the edges. Pass the wir-
ings through the hole to prevent damage.
• Make sure the remote controller wiring, the wiring between
the units, and other electric wiring do not pass through the
same locations outside of the unit, separating them by at
least 5”, otherwise electric noise (external static) could cause
mistaken operation or breakage.
[ PRECAUTIONS ]
1.
Use round crimp-style terminals for connecting wires to the
power supply terminal block.
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.)
• Use the specified electric wire. Connect the wire securely
to the terminal. Lock the wire down without applying
excessive force to the terminal. (Tightening torque:
0.97ft.lbf ±10 %)
2. 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, they might
be damaged.
• Refer to the table below for the tightening torque of the
terminal screws.
3. Do not connect wires of different gauge to the same ground-
ing terminal. Looseness in the connection may deteriorate
protection.
4. Outside of the unit, keep transmission wiring at least 5”
away from power supply wiring. The equipment may mal-
function if subjected to electric (external) noise.
5. For remote controller wiring, refer to the “INSTALLATION
MANUAL OF REMOTE CONTROLLER”.
6.
Never connect power supply wiring to the terminal
block for remote controller wiring. A mistake of the sort
could damage the entire system.
7. Use only specified wire and tightly connect wires to termi-
nals. Be careful wires do not place external stress on termi-
nals. Keep wiring in neat order and so as not to obstruct
other equipment such as popping open the electric parts
box lid. Make sure the lid closes tight. Incomplete connec-
tions could result in overheating, and in worse case, electric
shock or fire.
9-2
WIRING EXAMPLE
• Fit the power supply wiring of each unit with a switch and
fuse as shown in the drawing.
COMPLETE SYSTEM EXAMPLE (3 SYSTEMS)
1. When using 1 remote controller for 1 indoor unit. (Nor-
mal operation)
2. For group control or use with 2 remote controllers
Terminal
Size
Tightening torque
(ft-lbf)
Terminal block for remote controller (6P)
M3.5
0.58 – 0.72
Power supply terminal block (2P)
M4
0.87 – 1.06
Ground terminal
M4
1.06 – 1.43
