16
English
CAUTION
•
Be sure to attach the sealing material and putty (field supplied) to hole of wiring to prevent the infiltration of
water as well as any insects and other small creatures from outside. Otherwise a short-circuit may occur
inside the control box.
•
When clamping the wirings, be sure no pressure is applied to the wire connections by using the included
clamp to make appropriate clamps. Also, when wiring, make sure the lid on the control box fits snugly by
arranging the wirings neatly and attaching the service lid firmly. When attaching the service lid, make sure
no wirings get caught in the edges. Pass wiring through the wiring through holes to prevent damage to
them.
•
Make sure the remote controller wiring, and transmission wire the wiring between the units, and other elec-
trical wiring do not pass through the same locations outside the machine, separating them by at least
50mm, otherwise electrical noise (external static) could cause mistaken operation or breakage.
•
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.
8-2 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. (Normal operation)
Power supply wiring
Transmission and remote controller wiring
Switch
Fuse
Fig. 22
Power supply
Main
switch
Remote controller
Indoor unit
Outdoor unit
BS unit
(Only for Heat
recovery system)
L N
L N
IN/D OUT/D
F1 F2 F1 F2
Control box
L N
L N
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
L N
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
L N
L N
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
L N
Outdoor unit
No. 1
System
Indoor
unit A
Indoor
unit B
Indoor
unit C
Most
downstream
Indoor unit
Power supply
220-240V
50Hz
Power supply
220-240V
50Hz
Power supply
220-240V
50Hz
Power supply
220-240V
50Hz
Fig. 23
01_EN_3P156215-12U.fm Page 16 Thursday, August 27, 2009 4:09 PM