Mitsubishi Electric MXZ-8B48NA Installation Manual page 12

7. Electrical work
7.1. Outdoor unit (Fig. 7-1) (Fig. 7-2)
@® Remove the service panel.
@® Wire the cables referring to the Fig. 7-1.
® Earth terminal
Terminal block
© Clamp
© Service panel
® Wire the cables so that they do not contact the center of the service panel or
the gas vaive.
® Conduit mounting plates (#22 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)
@® Fix power source wiring to terminal box by using buffer bushing for tensile force
Fig. 7-1 (PG connection or the like).
© Wiring conduit (O.D. 1/2", procure locally)
7.2. Branch box/outdoor wire connection and outdoor power supply cord connection
Warning:
« Be sure to attach the terminal block covers/paneli 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.
« 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 insufficient insulation to ground or a poor electrical
contact at the intermediate connection point.
LN Caution: _ _Loosen terminal screw.
+ Be careful not to make mis-wiring. 7
¢ Firmly tighten the terminal screws to prevent them from loosening. /
+ After tightening, pull the wires lightly to confirm that they not move. !
+ If the connecting wire is incorrectly connected to the terminal block, the unit does not operate normally. Terminal ae
block ~kead wire —S
Connection details
* Connect wire from the branch box correctly to the terminal block.
* For future servicing, give extra length to connecting wire.
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