Toshiba MML-AP0074BH1-E Manual De Instalación página 53

 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
103-EN
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
A B A B
Remote controller Remote controller
Pull box Pull box
Group control
 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)
• Remove the mounting screws from electrical control
box cover. Dettach the cover from the electrical
control box.
• Connect the wires to the terminal block and tighten
the screws. Fix the wires with the cord clamp
attached to the electrical control box.
(Do not apply tension to the connecting section of the
terminal block.)
• Mount the cover of the electrical control box without
pinching wires.
L N U1 U2 A B
Earth
Cord clamp
Power supply
wire
– 52 –
 Temporary fixing of electrical
control box
To work on the electrical control box such as check
operation, pass two fixing screws at the side plate
through the holes and fix the electrical control box
temporarily so that you can work at the front side.
(Refer to the Removal of the electrical control box.)
Electrical control
box
Side plate
Indoor / Outdoor control
wire Remote controller
Power supply
terminal block
terminal block
U U A B
L N 1 2
Earth line
R(L) S(N)
U U A B
1 2
R(L) S(N)
U U A B
1 2
 Remote controller wiring
Strip off approx. 9 mm the wire to be connected.
▼ Wiring diagram
Remote
controller
Terminal block for
Control wire
wire
remote controller wiring
between indoor
of indoor unit
and outdoor units
A
B
 Address setup
Set up the addresses as per the Installation Manual
supplied with the outdoor unit.
Fixing screws on the side plate
R S
(L) (N)
Power supply wire
Terminal block
Remote
A
controller
B
unit
Remote controller wire
(Locally procured)
104-EN