Toshiba MMF-AP0156H1-E Installation Manual page 14

 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
25-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
– 13 –
 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)
<How to remove the electrical control box cover>
• AP015 to AP027 models
Take off screws (1) and (2) at this side of the
electrical control box and remove the drip-proof
cover.
Take off screws (3) and (4) at front side of the
electrical control box and remove the electrical
control box cover.
• AP036 to AP056 models
Take off screws (3) and (4) at front side of the
electrical control box and remove the cover of the
electrical control box.
(The drip-proof cover is provided to AP015 to AP027
models only.)
<Wiring>
• Draw the wire into the control wire hole (knockout
hole).
• As shown in the figure, set a trap and fix the wire with
a cord clamp.
L N U1 U2 A B
Do no apply tension on the connecting part of the
terminal block.
• Be sure to mount cover of the electrical control box
and the drip-proof cover.
(3)
(4)
Electrical control box
Electrical
control box
Earth screw
Power supply wire
Earth line
 Remote controller wiring
Strip off approx. 9 mm the wire to be connected.
▼ Wiring diagram
Terminal block for
remote controller wiring
of indoor unit
(1)
(2)
A
B
Drip-proof cover
(AP015 to AP027
only)
Electrical control
box cover
 Address setup
Control wire
Set up the addresses as per the Installation Manual
hole
supplied with the outdoor unit.
Indoor / Outdoor control
wire / Remote controller
terminal block
Power supply
terminal block A B
L N
U U A B
1 2
R(L) S(N)
R S
Cord clamp
Control wire between
indoor and outdoor units
R S
(L) (N)
Power supply wire
Terminal block
Remote
A
controller
B
unit
Remote controller wire
(Locally procured)
26-EN