Toshiba SUPER MMK-AP0073H (IN) Service Manual page 33

10
ELECTRIC WORK
n Power supply wire and communication wires specifications
Power supply wire and communication wires are procured locally.
For the power supply specifications, follow the table below. Power supply wiring and communication wiring
are to be procured locally.
For specifications of the power capacity of the outdoor unit and the power supply wires, refer to the
Installation Manual supplied with the outdoor unit.
Indoor unit power supply
• Prepare an exclusive power supply for the indoor unit independently of the outdoor unit.
• Arrange the power supplies to the indoor and outdoor units, so that a common earth leakage breaker and
main switch can be used.
• Power supply wire specification: Cable 3-core 2.5mm², in conformity with Design H07 RN-F or 60245 IEC 57.
u Power supply
Power supply
Power supply switch/Earth leakage breaker or power supply wiring/fuse rating for indoor units should be selected by the
accummulated total current values of the indoor units.
Power supply wiring
Control wiring, Central controller wiring
• Use a 2 core non polarity wire.
• To prevent any possible noise issues, use a shielded 2 core wire.
• The total stated length of communication wiring is determined by the interconnecting length of indoor to
outdoor wire plus the length of the central control communication wire.
u Communication line
Control wiring between indoor units, and outdoor unit
(2-core shield wire)
Central control line wiring (2-core shield wire)
Wired remote controller wiring
This wiring is not required when using the supplied wireless remote controller.
• For wiring remote controllers a 2 core non polarity wire must be used.
Wired remote controller wiring, remote controller inter-unit wiring
Total wire length of wired remote controller wiring and
remote controller inter-unit wiring = L + L1 + L2 + ... Ln
Total wire length of wired remote controller inter-unit wiring = L1 + L2 + ... Ln
The remote controller wire (Communication line) and AC220–240V 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, etc.
220–240V ~ 50Hz
220–220V ~ 60Hz
Below 50m 2.5 mm²
(Up to 1000m) 1.25 mm²
Wire size
(Up to 2000m) 2.0 mm²
(Up to 1000m) 1.25 mm²
Wire size
(Up to 2000m) 2.0 mm²
Wire size: 0.5mm² to 2.0mm²
In case of wired type only Up to 500m
In case of wireless type included Up to 400m
Up to 200m
CAUTION
Indoor unit
L1
Wired remote controller wiring
Wired remote controller
n Control wiring between indoor and outdoor units
NOTE
An outdoor unit that is interconnected to the indoor units automatically becomes the header unit.
u Wiring example
Outdoor Power supply
380V-415V ~, 50Hz
380V ~, 60Hz
Earth leakage
breaker
Header outdoor unit
U1 U2 U3 N U1 U2 U3 U4 U5 U6
Earth
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
A B
Indoor power supply Remote controller
220-240V, ~, 50Hz
220V ~, 60Hz
Earth leakage breaker
power switch
Pull box Pull box
n Address setup
Set up the addresses as per the Installation Manual supplied with the outdoor unit.
Indoor unit Indoor unit
L2 Ln
(Max. 8 units)
Remote controller inter-unit wiring
Outdoor Power supply
380V-415V ~, 50Hz
380V ~, 60Hz
Earth leakage
breaker
Follower outdoor unit
U1 U2 U3 N U1 U2 U3 U4 U5 U6
Earth
terminal
Indoor unit Indoor unit
Earth Earth
L N U1 U2 A B L N U1 U2 A B
A B A B
Remote controller Remote controller
Pull box
Indoor unit
L N U1 U2 A B