Mitsubishi Electric MXZ-2C20NA2 Installation Manual page 5

2-2. CONNECTING WIRES FOR OUTDOOR UNIT
e sure to use special circuits for room air conditioner.
Wiring wor should be based on applicable technical standards.
Wiring connections should be made following the diagram.
Screws should be tightened so they won't loosen.
1) Remo e the ser ice panel.
2) Remo e the conduit plate.
3) Attach the conduit connector to conduit plate with loc nut then secure
it to the unit with screws. e sure to attach the conduit connectors in
the correct locations according to their sizes.
4) Connect ground wires to the T bed.
5) Loosen terminal screw, and connect indoor/outdoor unit connecting
wire ( ) from the indoor unit correctly on the terminal bloc . e careful
not to ma e mis-wiring. Fix the wire to the terminal bloc securely so
that no part of its core is appeared, and no external force is con eyed
to the connecting section of the terminal bloc .
6) Firmly tighten the terminal screws to pre ent them from loosening. After
tightening, pull the wires lightly to con rm that they do not mo e.
7) Perform 5) and 6) for each indoor unit.
8) Connect power supply cord (A).
9) Close the ser ice panel securely. Ma e sure that 3-2. PIPE CONNEC-
TION is completed.
Screws
Remark:
* Use a ring tongue terminal in order to connect a ground wire to terminal.
INDOOR UNIT
Terminal bloc
rounding
terminal *
208/230 V AC
1 phase 60 Hz
Disconnect
switch
rounding
terminal *
Terminal bloc
Ser ice panel
5/8 in.
1-3/8 in. (15 mm)
(35 mm)
Terminal bloc
Lead wire
Power supply
208/230 AC
1 phase 2 wires 60 z
terminal *
Terminal bloc
Terminal bloc
OUTDOOR UNIT
ELECTRICAL SPECIFICATIONS
OUTDOOR UNIT
Power supply
( , P ASE, z)
Max. Fuse size
(time delay) (A)
Min. Circuit
Ampacity (A)
Fan motor
(F.L.A)
(R.L.A)
Com-
pressor
(L.R.A)
Indoor unit-Remote controller : (Wireless)
Control oltage
Indoor unit-Outdoor unit : DC 12-24
Conduit connector
(a) Power supply
(b) Indoor/outdoor
Note:
Remo ing the handle increases the effecti eness of the wiring operation.
e sure to reinstall the handle.
Loc nut
Connect wires to the matching numbers of terminals.
Be sure to attach each screw to its correspondent terminal when
securing the cord and/or the wire to the terminal block.
CONNECTING WIRES AND CONNECTING GROUND WIRE
Use solid conductor Min. AW 14 or stranded conductor Min. AW 14.
Use double insulated copper wire with 600
Use copper conductors only.
* Follow local electrical code.
POWER SUPPLY CABLE
Use solid or stranded conductor Min. AW 8.
Use copper conductors only.
* Follow local electrical code.
GROUND WIRE
Use solid or stranded conductor Min. AW 8.
rounding
Use copper conductors only.
* Follow local electrical code.
WARNING:
Use the indoor/outdoor unit connecting wire that meets the Stand-
ards to connect the indoor and outdoor units and x the wire to
round
the terminal block securely so that no external force is conveyed
to the connecting section of the terminal block. An incomplete
connection or xing of the wire could result in a re.
For future ser icing, gi e extra length to the connecting wires.
Turn on the main power when the ambient temperature is - F
(-20 C) or higher.
Under conditions of - F (-20 C), it needs at least hr stand by
before the units operate in order to warm the electrical parts.
MXZ-2C20NA2
208/230, 1, 60
20
17.2
1.77
10.7
15.5
Trade size of conduit
3/4 in.
1/2 in.
Screw
Conduit connector
Conduit plate
insulation.
En-4