Toshiba MMU-UP0071WH-E, Installation Manual, Page: 20 / 33

– 19 –
 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. Remove the two screws used to mount the cover of the electrical parts box, and slide the cover to open it.
(The cover of the electric parts box remains hanged to the hinge.)
2. Connect the power cable, indoor/outdoor inter-unit wire and remote controller wire to the terminal block of the
electrical parts box.
3. Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electric parts box. (Do
not apply tension to the connecting section of the terminal block.)
4. Using the attached thermal insulation material, seal the pipe connecting port. Otherwise, dewing may be caused.
5. Mount the cover of the electric parts box without pinching wires. (Mount the cover after wiring on the ceiling
panel.)
6. Pass the wires underneath the flashing protrusion of the drain pan, and stow them inside the wiring guide of the
electrical parts box cover.
Wiring inlet
Cover of the electric parts box
Wiring guide
Screws in 2 positions
P.C. board
Flashing protrusion
Hinge
Flashing protrusion
Wiring guide
Wiring inlet
L N
Earth screw
Indoor/Outdoor inter-unit wire/
Remote controller terminal block
Power supply
terminal block
Power supply wire
Control wire between
indoor and outdoor units
Cord clamp
Remote controller wire
Uv(U1) Uv(U2)
A B L N
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 less
Power supply wire
37-EN 38-EN