9
5. OUTDOOR UNIT INSTALLATION
5-1
INDOOR/OUTDOOR UNIT CONNECTING WIRE CONNECTION
• Connect the indoor/outdoor unit connecting wire
B
from the indoor unit correctly on the terminal block.
• For future servicing, give extra length to connecting wire.
• Peel off both ends of connecting wire (extension wire).
• Be careful not to contact connecting wire with piping.
• Make earth wire a little longer than the others.
(more than 35 mm)
• For the power supply cord and the indoor/outdoor unit connecting wires, be sure to use the ones in compli-
ance with the standards.
• Be sure to push the core until it is hidden and pull each cable to make sure that it is not pulled up incomplete
insertion may cause a risk of burning the terminal blocks.
35 mm
15 mm
Indoor and Outdoor connecting wire
Specification
Cable 4-core 1.0 mm
2
, in conformity with Design 245 IEC 57.
Loosen terminal screw.
Terminal block
Lead wire
<Connection details>
Caution:
• Use care not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confirm that they do not move.
Warning:
Be sure to attach the service panel of the outdoor unit securely. If it is not attached correctly, it could
result in a fire or an electric shock due to dust, water, etc.
Indoor terminal block
Outdoor terminal block
N
3
2
3 N
2
Indoor/outdoor unit
connecting wire
B
4-core 1.0 mm
2
Earth wire
(green/yellow)
Service panel
Remove one fixing
screw to open the
service panel.
Be sure to fix the
indoor/outdoor unit
connecting wire
B
using this cord clamp.
5-2
DRAIN PIPING FOR OUTDOOR UNIT
• Provide drain piping before indoor and outdoor piping connection. (It will be hard to install drain socket
A
if
indoor and outdoor piping connection is conducted prior to drain piping as outdoor unit becomes immov-
able.)
• Connect the drain hose
7
(obtainable at a store, inside diameter: 15 mm) as shown in the figure for drainage.
• Make sure to provide drain piping with a downhill grade for easy drain flow.
Drain hose
7
Drain socket
A
(For YV type only)
Note:
Do not use the drain socket
A
in the cold region. Drain may freeze and it makes the fan stop.
