Mitsubishi Electric M Series Manual page 554

MULTI SYSTEM Inverter Heat Pump
DRAIN PIPING FOR OUTDOOR UNIT
Please perform the drain piping work only when draining from one place.
1) Provide drain piping before indoor and outdoor piping connection.
2) Connect drain hose I.D.15 mm as shown in the illustration.
3) Make sure to provide drain piping with a downhill grade for easy drain flow.
Note:
Install the unit horizontally.
Do not use the drain socket in the cold regions. Drain may freeze and it makes the fan stop.
The outdoor unit produces condensate during the heating operation. Select the installation
place to ensure to prevent the outdoor unit and/or the grounds from being wet by drain water
or damaged by frozen drain water.
CONNECTING WIRES FOR OUTDOOR UNIT
1) Remove the service panel.
2) Loosen terminal screw, and connect indoor/outdoor unit connecting
wire (B) from the indoor unit correctly on the terminal block. Be careful
not to make mis-wiring. Fix the wire to the terminal block securely so
that no part of its core is appeared, and no external force is conveyed
to the connecting section of the terminal block.
3) Firmly tighten the terminal screws to prevent them from loosening. Af-
ter tightening, pull the wires lightly to confirm that they do not move.
4) Perform 2) and 3) for each indoor unit.
5) Connect power supply cord (A).
6) Fix indoor/outdoor unit connecting wire (B) and power supply cord (A)
with the cable clamps.
7) Close the service panel securely. Make sure that 3-2. PIPE CONNEC-
TION is completed.
• After making connections between both power supply cord (A) and
indoor/outdoor unit connecting wire (B), be sure to fix both cable and
wire with cable clamps.
Indoor/outdoor unit connecting wire
• Be sure to attach each screw to its correspondent terminal when
securing the cord and/or the wire to the terminal block.
• Make earth wire a little longer than others. (More than 35 mm)
• For future servicing, give extra length to the connecting wires.
C-552
Terminal Terminal Terminal block for
block block power supply
POWER SUPPLY
~/N 230 V 50 Hz
UNIT
UNIT
<INDOOR UNIT>
Drain socket
<OUTDOOR UNIT>
Service panel
15 mm
35 mm
Lead wire
M series
Drain hose
Terminal block
for power supply