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EN
ID
ID
■
Wiring between indoor unit and outdoor units
NOTE
•
A wiring diagram below is an example for connection to SMMS-u series. For connecting to other outdoor unit
series, refer to the Installation Manual attached to the outdoor unit to be connected.
▼
Wiring example
Outdoor Power supply
380V - 415V ~, 50 Hz
380V ~, 60 Hz
Circuit breaker
Earth
terminal
S: The ground of a
shielded wire
Indoor unit
Remote controller
Remote controller
Remote controller
Indoor power supply
220V - 240V ~, 50 Hz
208V - 230V ~, 60 Hz
Circuit breaker,
Power switch
Pull box
Pull box
Pull box
Group control
Earth
Indoor unit
Earth
Indoor unit
Earth
Indoor unit
Earth
S: The ground of a shielded wire
Control wiring between outdoor units (Shield wire)
Control wiring between indoor and outdoor units (Shield wire)
Control wiring between indoor units (Shield wire)
Earth
terminal
Outdoor unit
Header outdoor
Outdoor unit
Follower outdoor
Circuit breaker
Outdoor Power supply
380V - 415V ~, 50 Hz
380V ~, 60 Hz
Wire connection
REQUIREMENT
• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Pass the wires through the bushing of wire connection holes of the indoor unit.
• Keep a margin (Approx. 100 mm) on a wire to hang down the electrical control box at servicing or other purpose.
• The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
Remote controller wiring
Strip off approx. 9 mm the wire to be connected.
Wiring diagram
Before performing wiring work in the electrical control box, remove the
cover of the box (fixed with 2 screws).
Remove screw A, and loosen screw B.
Pull up the electrical control box cover and then open it forward.
Tighten the screws of the terminal block firmly, and fix the wires with
the cord clamps attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
Slide the electrical control box cover to install it. Do not pinch the wire
too strong, and reduce the load on the wire. Make the gap as small as
possible when installing the cover.
1
2
Remove screw A.
Loosen screw B.
Electrical control
box cover
R
(L)
S
(N)
10
10
30
70
System interconnection wire
Earth wire
2 mm or
le
ss
System interconnection wire
See the figure on the left for
system interconnection wires to
the terminal block.
A
B
A
B
Terminal block
Remote
controller
unit
Terminal block for remote
controller wiring of indoor unit
Remote controller wire
(Locally procured)
System interconnection
wire
Cord clamp
Remote controller
wiring
Earth screw
N
L
U
v
(U
1
)
U
v
(U
2
)
A
B
Select side C or D for the power cable clamping position referring to
the following table according to the cable type and diameter.
Side D (Space: 8.5 mm)
Side C (Space: 4 mm)
Wire type
Specification
Cable clamping position
3-core stranded wire 2.5 mm²
Side D
4-core stranded wire 1.5 mm²
Side C
* The cord clamp can be attached on either right or left side.
Clamp two cords side-by-side for twin connection.
Cabtyre cord
•
•
•
•
•
35-EN
36-EN
