Outdoor Units
11. Installation
•
Connect the rated cables only.
•
Connect using a driver which is able to apply the rated torque to the screws.
•
If the terminal is loose, fire may occur caused by arc. If the terminal is connected too firmly, the terminal
may be damaged.
Tightening torque
lbfꞏft
Nꞏm
M4
0.87 to 1.30
0.8 to 1.2
M5
1.45 to 2.17
2.0 to 3.0
CAUTION
•
When connecting cables, you can connect the cables to the electrical part or connect them through the
holes below depending on the spot.
•
Connect the communication cable between the indoor and outdoor units through a conduit to protect
against external forces, and feed the conduit through the wall together with refrigerant piping. Remove
•
all burrs at the edge of the knock-out hole and secure the cable to the outdoor knock-out using lining
and bushing with an electrical insulation such as rubber and so on.
•
Must keep the cable in a protection tube.
•
Keep distances of 1.97 inch(50mm) or more between power cable and communication cable.
•
When the cables are connected through the hole, remove the Plate bottom.
Outdoor-to-AHU Control Unit communication cable specifications
Power supply
Power supply
Max/Min (V)
Power cable
1Φ, 208-230V~, 60Hz
±10%
0.0039 inch² ↑ (2.5mm² ↑), 3 wires
Communication cable
18 AWG, 2 wires