3MXL24RMVJUA Installation Manual

13 ■English
Wiring
[Wiring procedure]
1) Strip the insulation from the wire (3/4inch (20mm)).
2) Connect the inter-unit wires between the indoor and
outdoor units so that the terminal numbers match.
Tighten the terminal screws securely. It is recommended
that a slot-head screwdriver be used to tighten the
screws.
3) Be sure to match the symbols for wiring and piping.
4) Pull the wire lightly to make sure that it does not
disconnect.
5) Pass the wiring through the cutout on the bottom of the
protection plate and attach the protection plate.
6) After completing the work, reattach the service lid to its
original position.
Outdoor unit
60Hz 208/230V
To room B
To room C
To room D
Room
A
Room A
Room
C
Room
D
Room
B
Indoor unit
power supply
Follow local codes for wiring
and safety devices between
outdoor unit and power
source.
Recommend using AWG14, stranded and
insulated wire for connections between indoor
and outdoor units.
Local code always supersedes recommendation.
Note: Take care to ensure that all wiring
between indoor unit and outdoor unit has a
consistent connection. Any splices can
cause communication errors.
Shape the wires so that there is
no lifting of the service hatch or
other structural parts.
Use the specified wires and
connect them securely.
Room A
Room C
Room D
Room B
power supply
CAUTION
Precautions to be taken for power supply wiring
• When using stranded wires, make sure to use the round crimp-style
terminal for connection to the power supply terminal block.
Stranded
wire
Round crimp-style
terminal
Arrow view B
Flat washer
Screw
Round
crimp-style
terminal
Good
Round crimp-
style terminal
Flat washer
Screw
Wrong
Flat washer
Round crimp-
style terminal
Screw
B
Good
Round crimp-
style terminal
Flat washer
Screw
Wrong
Flat washer
Round crimp-
style terminal
Screw
Flat washer
Screw
Round
crimp-style
terminal
A
Arrow view A
• When connecting the inter-unit wires to the terminal block using a single core wire, be sure to curl the end of the lead.
Improperworkmaycauseheatandres.
Strip wire end
to this point.
Excessive strip length
may cause electric shock
or current leakage.
Stripping wire at terminal block
Good Wrong
Good Wrong
Ground
This air conditioner must be grounded. For grounding, follow all local, and state electrical codes.
01_EN_3P500432-6E.indd 13 10/17/2019 3:02:09 PM