Toshiba MMK-AP0074MH-E Service Manual page 79

SMMS High-Wall Type
CAUTION
The remote controller wire (Communication line) and AC 220 – 240 V wires cannot be parallel to
contact each other and cannot be stored in the same conduits. If doing so, a trouble may be
caused on the control system due to noise or other factor.
Indoor unit Indoor unit
Remote
controller
L1
wiring
Remote
Remote controller inter-unit wiring
controller
Wiring between indoor and outdoor units
NOTE
An outdoor unit connected with control wiring between indoor and outdoor units wire becomes automatically
the header unit.
23-EN
Installation Manual
Indoor unit Indoor unit
L2 Ln
(Max. 8 units)
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SMMS High-Wall Type
M Wiring example
Outdoor Power supply Outdoor Power supply
380 V - 415 V ~, 50 Hz 380 V - 415 V ~, 50 Hz
380 V ~, 60 Hz 380 V ~, 60 Hz
Circuit breaker
Header outdoor
unit
Earth Earth
L1 L2 L3 N U1 U2 U3 U4 U5 U6 L1 L2 L3 N
terminal terminal
Control wiring between outdoor units
Control wiring between indoor and outdoor units
Control wiring between indoor units
Indoor unit Indoor unit
Earth Earth
L N U1 U2 A B L N U1 U2
Indoor power supply
A B
220 V - 240 V ~, 50 Hz
220 V ~, 60 Hz Remote controller Remote controller
Circuit breaker,
Pull box Pull box
Power switch
Wired remote controller wiring
• As the wired remote controller wire has non-polarity, there is no problem if connections to indoor unit
terminal blocks A and B are reversed.
M Wiring diagram
Terminal block for
remote controller
wiring of indoor unit
A
B
Wired remote controller wire
(Procured locally)
Address setup
Set up the addresses as per the Installation Manual supplied with Outdoor unit.
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Installation Manual
Circuit breaker
Follower outdoor
unit
U1 U2 U3 U4 U5 U6
Indoor unit Indoor unit
Earth Earth
A B L N U1 U2 A B L N U1 U2 A B
A B A B
Remote controller
Pull box
Group control
Terminal block
A Wired remote
controller unit
B
24-EN