Wiring Between Indoor And Outdoor Units; Wire Connection - Toshiba MMD-AP0054SPH-E Installation Manual

 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
31-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)
• Before remove the electrical control box cover, remove the cover plate and air filter.
• Remove the cover of the electrical control box by taking off the mounting screws (2 positions) and pushing the
hooking section. (The cover of the electrical control box remains hanged to the hinge.)
• Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
• Set a loop for the system interconnection wire of the storing part of the indoor unit electric parts; otherwise the
electrical control box cannot be drawn out in service time.
• Mount the cover of the electrical control box without pinching wires.
L N U1 U2 A B
Power supply cord
Earth wire
– 16 –
R(L) S(N)
Control wire
Electrical
control box
Remote controller wire
Cable cramp
R S
(L) (N)
Power supply wire
A B
Electrical
control box
cover
Screw
(2 positions)
Cover plate Air filter
32-EN