Mitsubishi Electric MXZ-8B48NA Manuel D'installation page 12

7. Electrical work
Fig. 7-1
CONDUIT PLATE : accessory
Fig. 7-2
7.2. Branch box/outdoor wire connection and outdoor power supply cord connection
Warning:
• Be sure to attach the terminal block covers/panel of the outdoor unit securely. If it is not attached correctly, it could result in a fi re or an electric shock due to
dust, water, etc.
• Be sure to connect the power supply cords and the connecting wires for the indoor units, outdoor units, and branch boxes directly to the units (no intermedi-
ate connections).
Intermediate connections can lead to communication errors if water enters the cords or wires and causes insuffi cient insulation to ground or a poor electrical
contact at the intermediate connection point.
Caution:
• Be careful not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confi rm that they not move.
• If the connecting wire is incorrectly connected to the terminal block, the unit does not operate normally.
• Connect wire from the branch box correctly to the terminal block.
• For future servicing, give extra length to connecting wire.
12
L1 L2GR S1 S2 S3
7.1. Outdoor unit (Fig. 7-1) (Fig. 7-2)
1 Remove the service panel.
2 Wire the cables referring to the Fig. 7-1.
A Earth terminal
B Terminal block
C Clamp
D Service panel
E Wire the cables so that they do not contact the center of the service panel or
the gas valve.
3 Conduit mounting plates (ø22 mm [7/8"]) are being provided. Pass the power
supply and signal wires through the appropriate knock-out holes, then remove
the knock-out piece from the bottom of the terminal box and connect the wires.
(Fig. 7-2)
4 Fix power source wiring to terminal box by using buffer bushing for tensile force
(PG connection or the like).
F Wiring conduit (O.D. 1/2", procure locally)
Loosen terminal screw.
Terminal
Lead wire
block
Connection details