Outdoor Unit Installation; Installing The Unit - Mitsubishi Electric MXZ-4B80VA Installation Manual

2. OUTDOOR UNIT INSTALLATION

2-1. INSTALLING THE UNIT

• Be sure to fix the unit's legs with bolts when installing it.
• Be sure to install the unit firmly to ensure that it does not fall by an
earthquake or a gust.
• Refer to the figure in the right for concrete foundation.
• Do not use the drain socket and the drain cap in the cold region.
Drain may freeze and it makes the fan stop.
2-2. 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.
Connecting order
• Connect the terminal block in order,
from the A, B and C unit side.
Indoor/outdoor unit connecting wire
Terminal
block
UNIT
UNIT
*E unit is for 5B100VA only
• 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.
Power supply
Terminal block for
indoor/outdoor unit
Terminal Terminal
block block
UNIT
UNIT
UNIT UNIT
Make the setting
depth deeper.
Anchor leg
Anchor both length
Cable clamp
<OUTDOOR UNIT>
Terminal Terminal Terminal block for
block block power supply
UNIT
POWER SUPPLY
~/N 230 V 50 Hz
UNIT UNIT
<INDOOR UNIT>
Fix here with
M10 bolts.
Make with wider.
Anchor both pitch
(Unit: mm)
Terminal block
for power supply
5B100VA
Service panel
E unit is for 5B100VA only
15 mm
35 mm
Lead wire
5