Toshiba MMU-UP0051MH-E User Manual page 18

 Wire connection
REQUIREMENT
• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Route the wire through the wire connection port of the indoor unit.
• The low-voltage circuit is provided for the control wire and remote controller wire. (Do not connect the high-voltage
circuit.)
1. Loosen the two screws, and remove the cover of electrical control box by sliding in the direction of the arrow.
2. Connect the power supply wire, communication wires and remote controller wire to the terminal block of the
electrical control box.
3. 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.)
4. Mount the cover of the electrical control box without pinching wires.
(Mount the cover after wiring on the ceiling panel.)
Hook part
Select side C or D for the power supply wire clamping position, refer
to the following table according to the cord type and diameter.
* The cord clamp can be attached on either right or left side. Clamp
two cords side-by-side for twin connection.
Wire type
Cabtyre cord
Cabtyre cord
Communication
wires (U1, U2
terminals)
Cord clamp
Remote controller wires (A, B terminals)
33-EN
Screws
Cover of electrical control box
Side C
(Space: 4 mm)
Cord clamping
Specification
position
3-core stranded wire 2.5 mm² Side D
2-core stranded wire 1.5 mm² Side C
Side D
(Space: 8.5 mm)
Earth screw
*1
Cord clamp
Power supply wires (L, N terminals)
– 17 –
CAUTION CAUTION
*1 Make sure to fix the power supply wire with the cord
clamp so that no water enters into the electrical
control box through the power supply wire.
Incorrect
Correct
Cord clamp
Power supply wire
R S
(L) (N)
Earth wire
Control wire between
indoor and outdoor units
 Remote controller wiring
Strip off approx. 9 mm the wire to be connected.
Wiring diagram
Terminal block for remote
controller wiring of indoor unit
 Address setup
Set up the addresses as per the Installation Manual supplied with the outdoor unit.
 Wiring on the ceiling panel
According to the Installation Manual of the ceiling panel, connect the connector (20P: White) of the ceiling panel to
the connector (CN510: White) on P.C. board of the electrical control box.
 Wiring on the ceiling panel
According to the Installation Manual of the ceiling
panel, connect the louver motor connector on the
ceiling panel side and the louver motor connector on
the indoor unit side.
Louver motor
Louver motor connector
connector (Indoor unit)
(Ceiling panel)
See the figure on the left for
system interconnection
wires to the terminal block.
Power supply wire
Remote controller wire
Terminal block
(Locally procured)
A
A
Remote controller unit
B
B
34-EN