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ELECTRICAL WORK
WARNING
•
Using the specified wires, ensure to connect the wires, and fix wires securely so that the external tension to the
wires does not affect the connecting part of the terminals.
Incomplete connection or fixation may cause a fire, etc.
•
Be sure to connect earth wire (grounding work).
Incomplete grounding causes an electric shock.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.
•
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.
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 208-230V power to the terminal blocks (U1/U2, A/B, etc) for control wiring (otherwise the system will fail).
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
Be sure remove the gland plate from the Dx-Controller when drilling gland holes. Use cable glands when installing wires
through the gland plate of the Dx-Controller.
Run the refrigerant piping and control wiring line in the same line.
Do not turn on the power of the Dx-Controller 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.
Cable size must be calculated for site condition and correct glands fitted. All cables should be in conduit or armoured
cables correctly glanded. This has to be done by the site installer.
Dx-Controller power supply
For the power supply of the Dx-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-Controller connected to the same outdoor unit so
that they are commonly used.
▼ Power supply
Power supply
208 / 230V 1ph 60Hz
Power supply switch / Earth leakage breaker or power supply wirings / fuse rating for Dx-Controller should be
selected by the accumulated total current values of the Dx-Controller.
Power supply wiring
Up
to 164’1” (50m)
MCA: 0.4A, MOCP: 15A