Electrical Work - Toshiba MMU-AP0092H Installation Manual

SMMS 4-way Air Discharge Cassette Type
7

ELECTRICAL WORK

1. Using the specified wires, ensure to connect
the wires, and fix wires securely so that the
external tension to the wires do not affect the
connecting part of the terminals.
Incomplete connection or fixation may cause a
fire, etc.
2. Be sure to connect earth wire. (grounding
work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for
telephone wires.
3. Appliance shall be installed in accordance
with national wiring regulations.
Capacity shortage of power circuit or incomplete
installation may cause an electric shock or a fire.
• If incorrect/incomplete wiring is carried out, it will
cause an electrical fire or smoke.
• Be sure to install an earth leakage breaker that is
not tripped by shock waves.
If an earth leakage breaker is not installed, an
electric shock may be caused.
• Be sure to use the cord clamps attached to the
product.
• Do not damage or scratch the conductive core
and inner insulator of power and inter-connecting
wires when peeling them.
• Use the power cord and Inter-connecting wire of
specified thickness, type, and protective devices
required.
• Never connect 220–240V power to the terminal
blocks (
(Otherwise, the system will fail.)
REQUIREMENT
• For power supply wiring, strictly conform to the
Local Regulation in each country.
• For wiring of power supply of the outdoor units,
follow the Installation Manual of each outdoor
unit.
• Perform the electric wiring so that it does not
come to contact with the high-temperature part
of the pipe.
The coating may melt resulting in an accident.
• After connecting wires to the terminal blocks,
provide a trap and fix wires with the cord
clamp.
• Run the refrigerant piping line and control
wiring line in the same line.
17-EN
WARNING
CAUTION
, , A , B , etc.) for control wiring.
• Do not turn on the power of the indoor unit until
vacuuming of the refrigerant pipes completes.
Power supply wire and
communication wires
specifications
Power supply wire and communication wires are
procured locally.
For the power supply specifications, follow to the
table below. If capacity is little, it is dangerous
because overheat or seizure may be caused.
For specifications of the power capacity of the
outdoor unit and the power supply wires, refer to
the Installation Manual attached to the outdoor
unit.
Indoor unit power supply
• For the power supply of the indoor unit, prepare
the exclusive power supply separated from that
of the outdoor unit.
• Arrange the power supply, earth leakage
breaker, and main switch of the indoor unit
connected to the same outdoor unit so that they
are commonly used.
• Power supply wire specification : Cable 3-core
2.5mm², in conformity with Design 60245 IEC
57.
▼ Power supply
Power supply
Power supply switch/Earth leakage breaker or power
supply wiring/fuse rating for indoor units should be
selected by the accummulated total current values of
the indoor units.
Power supply wiring Below 50m
Control wiring, Central controller wiring
• 2-core with polarity wires are used for the
Control wiring between indoor unit and outdoor
unit and Central controller wiring.
• To prevent noise trouble, use 2-core shield
wire.
• The length of the communication line means the
total length of the inter-unit wire length between
indoor and outdoor units added with the central
control system wire length.
– 17 –
Installation Manual
220–240V ~, 50Hz
220V ~, 60Hz
2.5 mm²