Toshiba Super MMU-AP0151SH Installation Manual page 19

Cable connection
• As the remote controller cable has no polarity, there is no problem if connections to indoor unit terminal blocks
A and B are reversed.
• Be sure to pass the cable through the bushing of cable connection port of the indoor unit.
• Keep a margin (approx. 100m) on a cable to hang down the electric parts box at servicing, etc.
• The low-voltage circuit is provided for the remote controller. (Do not connect high-voltage circuit.)
• Remove the cover of the electric parts box.
• Tighten the screws of the terminal block, and fix the
cables with cord clamp attached to the electric parts
box. (Do not apply tension to the connecting section
of the terminal block.)
• Mount the cover of the electric parts box without
pinching cables.
Using the attached thermal insulator for sealing of
cable connecting port, seal the cable connecting
port. (Otherwise dewing may be caused.)
Inter-unit wire
Electric parts box
Cord clamp
Earth screw
Treating of wiring connecting port
• As shown on the figure, seal the wire connecting port with heat
insulator.
If sealing is insufficient, dewing is caused in the electric parts box.
REQUIREMENT
Power supply cable
16
R(L) S(N)
R(L) S(N)
Earth screw
<END unit>
R S
(L) (N)
(R (L), S (N) terminal)
(U , U terminal)
1 2
(A, B terminal)
<Intermediate unit>
Cable
U U A B
1 2
U U A B
1 2
Earth line
Connecting cable
Indoor unit power supply
Control transmission line
Remote controller wirng
Heat insulator
(Required at site)