– 17 –
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.)
U
v
(U1)
U
v
(U2)
A
B
LN
U
v
(U1)
U
v
(U2)
A
B
LN
Communication
wires (U1, U2
terminals)
Earth screw
Cord clamp
*1
Power supply wires (L, N terminals)
Remote controller wires (A, B terminals)
Cord clamp
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
Specification
Cord clamping
position
Cabtyre cord
3-core stranded wire 2.5 mm²
Side D
Cabtyre cord
2-core stranded wire 1.5 mm²
Side C
Side D
(Space: 8.5 mm)
Side C
(Space: 4 mm)
Hook part
Screws
Cover of electrical control box
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.
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.
Remote controller wiring
Strip off approx. 9 mm the wire to be connected.
Wiring diagram
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.
Incorrect
Correct
Cord clamp
Power supply wire
Louver motor
connector (Indoor unit)
Louver motor connector
(Ceiling panel)
R
(L)
S
(N)
10
10
50
70
Control wire between
indoor and outdoor units
Earth wire
See the figure on the left for
system interconnection
wires to the terminal block.
2 mm or
le
ss
Power supply wire
A
B
A
B
Terminal block
Remote controller unit
Terminal block for remote
controller wiring of indoor unit
Remote controller wire
(Locally procured)
33-EN
34-EN
Summary of Contents for MMU-UP0051MH-E
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