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3. Installation
WARNING
• A main switch or other means for disconnection, having a contact separation in all poles, must be incorporation in
the fixed wiring in accordance with relevant local and national legislation.
• Switch off the power supply before making any connections.
• All field wiring and components must be installed by a licensed electrician and must comply with relevant
European and national regulations.
• The field wiring must be carried out in accordance with the wiring diagram supplied with the unit and the
instructions given below.
• Be sure to use a dedicated power supply. Never use a power supply shared by another appliance.
• Be sure to establish an earth. Do not earth the unit to a utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.
• Be sure to install an earth leakage protector (30 mA). Failure to do so may cause electrical shock.
WARNING
Use crimp-type terminals and tighten the terminal screws to the specified torques, otherwise, abnormal
overheating may be produced and possibly cause extensive damage inside the unit.
CAUTION
When connecting the power supply cord, make sure that the phase of the power supply matches with the phase of
the terminal board. If the phases do not match, the compressor will rotate in reverse and will not be able to
compress.
Tightening torque
M4 screw
1.2 to 1.8 N·m (12 to 18 kgf·cm)
M5 screw
2.0 to 3.0 N·m (20 to 30 kgf·cm)
WARNING
• Before starting work, check that power is not being supplied to the controller and outdoor unit.
• Match the terminal board numbers and connection cord colors with those of the outdoor unit. Erroneous wiring
may cause burning of the electric parts.
• Connect the connection cords firmly to the terminal board. Imperfect installation may cause a fire.
• Always fasten the outside covering of the connection cord with the cord clamp. (If the insulator is chafed, electric
leakage may occur.)
• Always connect the ground wire.
• If the supply cord is damaged, it must be replaced by the supplier, its service agent or similarly qualified persons
in order to avoid a hazard.
CAUTION
• Match the terminal block numbers and connection cord colors with those of the controller. Erroneous wiring may
cause burning of the electric parts.
• Connect the connection cords firmly to the terminal block. Imperfect installation may cause a fire.
• Always fasten the outside covering of the connection cord with the cord clamp. (If the insulator is chafed, electric
leakage may occur.)
• Securely earth the power cord plug.
Summary of Contents for AEYC-0639U-CH
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