Wiring Between Indoor And Outdoor Units - Toshiba MMD-AP0184H-E Installation Manual

SMMS Concealed Duct High Static Pressure Type
▼ Power supply
Power supply
Power supply switch / circuit breaker or power supply wiring / fuse rating for indoor units should be selected by the
accumulated total current values of the indoor units.
Power supply wiring
Control wiring, Central controller wiring
• 2-core with polarity wires are used for the Control wiring between indoor unit and outdoor unit and Central
controller wiring.
• To prevent noise trouble, use 2-core shield wire.
• The length of the communication line means the total length of the inter-unit wire length between indoor and
outdoor units added with the central control system wire length.
▼ Communication line
Control wiring between indoor units, and
outdoor unit (2-core shield wire)
Central control line wiring (2-core shield
wire)
Remote controller wiring
• 2-core with non-polarity wire is used for wiring of the remote controller wiring and group remote controllers wiring.
Remote controller wiring, remote controller inter-unit
wiring
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + ... Ln
Total wire length of remote controller inter-unit wiring = L1 + L2 + ... Ln
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
L
Remote
controller
L1
wiring
Remote
Remote controller inter-unit wiring
controller
23-EN
Installation Manual
220 V – 240 V ~, 50 Hz
220 V ~, 60 Hz
Below 50 m 2.5 mm 2
(Up to 1000 m) 1.25 mm²
Wire size
(Up to 2000 m) 2.0 mm²
(Up to 1000 m) 1.25 mm²
Wire size
(Up to 2000 m) 2.0 mm²
Wire size: 0.5 mm² to 2.0 mm²
In case of wired type only Up to 500 m
In case of wireless type
Up to 400 m
included
Up to 200 m
Indoor unit Indoor unit
L2 Ln
(Max. 8 units)
SMMS Concealed Duct High Static Pressure Type

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.
▼ Wiring example
Outdoor Power supply
380 V - 415 V ~, 50 Hz
380 V ~, 60 Hz
Circuit breaker
Header outdoor
unit
Earth
L1 L2 L3 N U1 U2 U3 U4 U5 U6
terminal
Control wiring between indoor and outdoor units
Indoor unit
Earth
L N U1 U2 A B
Indoor power supply
A B
220 V - 240 V ~, 50 Hz
220 V ~, 60 Hz
Remote controller
Circuit breaker,
Pull box
Power switch
– 12 –
Installation Manual
Outdoor Power supply
380 V - 415 V ~, 50 Hz
380 V ~, 60 Hz
Circuit breaker
Follower outdoor
unit
Earth
L1 L2 L3 N U1 U2 U3 U4 U5 U6
terminal
Control wiring between outdoor units
Control wiring between indoor units
Indoor unit Indoor unit Indoor unit
Earth Earth Earth
L N U1 U2 A B L N U1 U2 A B L N
A B A B
Remote controller Remote controller
Pull box Pull box
Group control
U1 U2 A B
EN
24-EN