¡ Piping Insulation
NOTE:
In case that the humidity inside the ceiling is high, apply additional insulation to the are nut connection.
Refer to the chapter initial check for more details.
6. ELECTRICAL WIRING
WARNING:
Turn OFF the main power switch to the CH unit, the indoor unit and the outdoor unit before electrical wiring work or a
periodical check is performed.
Protect the wires, electrical parts, etc. from rats or other vermin.
Use a medium sensing speed type ELB (Electric Leakage Breaker, activation speed of 0.1 sec. or less). If not used, it will
cause an electric shock or a re.
¡ Fix the cables securely. External forces on the terminals could lead to a re
CAUTION
Wrap the accessory packing around the wires, and plug the wiring connection hole with the seal material to protect the
product from any condensate water or insects.
Tightly secure the wires with the cord clamp inside the electrical box.
Use twisted shielded pair cable or shield pair cable for transmission wires between the indoor and the outdoor units (Max.
1000m), and connect the shielded part to the earth screw in the electrical box of the indoor unit as shown the next page gure.
6.1. GENERAL CHECK
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