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ELECTRIC WORK
WARNING
1. Using the specified wires, ensure to connect the wires, and fix wires securely so that the
external strength of the wires do not transmit to the connecting part of the terminals.
Incomplete connection or fixation may cause a fire, etc.
2. Be sure to connect earth wire. (Grounding work)
Do not connect the earth wire to gas pipe, city water pipe, lightning rod, or the earth wire of telephone.
Incomplete grounding causes an electric shock.
3. For electric work, strictly follow to the Local Regulation in each country and the Installation
Manual, and use an exclusive circuit.
Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fire.
CAUTION
Be sure to install an earth leakage breaker.
If an earth leakage breaker is not installed, an electric shock may be caused.
REQUIREMENT
• For power supply wiring, strictly conform to the Local Regulation in each country.
• For wiring of power supply of the outdoor units, follow to the Installation Manual of each outdoor unit.
• Never connect 220–240V power to the terminal blocks (A, B, U
1
, U
2
, X, Y, etc.) for control wiring.
(Otherwise, the system will be failed.)
• Perform the electric wiring so that it does not come to contact with the high-temperature part of the pipe.
The coating may melt resulted in an accident.
• After connecting wires to the terminal blocks, provide a trap and fix wires with the wire clamp.
• Store the refrigerant piping line 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.
• Keep a margin (Approx. 100mm) on a wire to hang down the electric parts box at servicing, etc.
Heat insulating process
Perform heat insulating for pipes at liquid side and
gas side separately. In cooling time, temperature at
both liquid and gas sides becomes lower.
Therefore, perform heat insulating process
sufficiently to avoid dewing.
• For heat insulator of pipe at gas side, be sure to
use one with heat-resisting temp.120°C or more.
• Using the attached heat insulating pipe, perform
heat insulating process
securely for pipe connecting part of the indoor
units without clearance.
REQUIREMENT
Apply the thermal insulation to the pipe connecting
section of the indoor unit securely up to the root
without exposure of the pipe.
(The pipe exposed to the outside causes water leak.)
Set notching upward.
Pipe side
(Required at the site)
Attached heat insulating pipe
