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Installation Dx-coil controller
WARNING
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.
REQUIREMENT
• For power supply wiring, strictly conform to the Local
Regulation for 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 in
to contact with the high-temperature part of the pipe.
The coating may melt in an accident.
• After connecting wires to the terminal blocks, provide
a trap and fix the wires with the cord clamp.
• Run the refrigerant piping and control wiring line in the
same line.
• Do not turn on the power of the indoor unit until
vacuuming of the refrigerant pipes completes.
CAUTION
• 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
(U1, U2, A, B, etc) for control wiring (otherwise the
system will fail).
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.
Cable size must be calculated for site condition and
correct glands fitted.
All cables should be in conduit or armored cables correctly
glanced.
This has to be done by the site installer.
Dx-coil controller power supply
• For the power supply of the Dx-coil controller, prepare
the exclusive power supply separated from that of the
outdoor unit.
• Arrange the power supply, earth leakage breaker and
main switch of the Dx-coil controller connected to the
same outdoor unit so that they are commonly used.
• Power supply wire specification: Cable 3-Core,
2
2.5 mm
, in conformity with Design 60245 IEC 57.
▼ Power supply
Power supply
Power supply switch / Earth leakage breaker or power
supply wirings / fuse rating for Dx-coil controllers should be
selected by the accumulated total current values of the Dx-
coil controllers.
Power supply wiring
Control wiring, Central controller wiring
• 2-core with polarity wires are used for the Control wiring
between indoor 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.
– 14 –
220 - 240 V ~, 50 Hz
220 V ~, 60 Hz
Below 50 m
2.5 mm²
EN
14-EN
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