Mitsubishi Electric MXZ -2C20 NA2 Installation Manual page 5

2-2. CONNECTING W IRES FOR OUTDOOR UNIT
• Be sure to use special circuits for room air conditioner.
• Wiring ork should be based on applicable technical standards.
• Wiring connections should be made follo ing the diagram.
• Scre s should be tightened so they on't loosen.
1) Remove the service panel.
2) Remove the conduit plate.
3) Attach the conduit connector to conduit plate ith lock nut then secure
it to the unit ith scre s. Be sure to attach the conduit connectors in
the correct locations according to their sizes.
4) Connect ground ires to the TB bed.
5) Loosen terminal scre w , and connect indoor/outdoor unit connecting
ire (B) from the indoor unit correctly on the terminal block. Be careful
not to make mis- iring. Fix the
that no part of its core is appeared, and no external force is conveyed
to the connecting section of the terminal block.
6) Firmly tighten the terminal scre s to prevent them from loosening. After
tightening, pull the ires lightly to confirm that they do not move.
7) Perform 5) and 6) for each indoor unit.
8) Connect pow er supply cord (A).
9) Close the service panel securely. Make sure that 3-2. PIPE CONNEC-
TI ON is completed.
Screw s
Remark :
* Use a ring tongue terminal in order to connect a ground w ire to terminal.
I NDOOR UNI T
Terminal block
Grounding
terminal *
20 8 /230 V AC
1 phase 60 Hz
Disconnect
sw itch
Grounding
terminal *
Terminal block
ire to the terminal block securely so
Service panel
5/8 in.
1-3/8 in. (15 mm)
(35 mm)
Terminal block
Lead w ire
Pow er supply
208/230 V AC
1 phase 2 ires 60 Hz
Terminal block Terminal block
OUTDOOR UNI T
E LE CTRI CAL SPE CI FI CATI ONS
OUTDOOR UNI T
Pow er supply
(V, PHASE, Hz)
Max. Fuse size
(time delay) (A)
Min. Circuit
Ampacity (A)
Fan motor
(F.L.A)
(R.L.A)
Com-
pressor
(L.R.A)
I ndoor unit-Remote controller : (W ireless)
Control voltage
Indoor unit-Outdoor unit : DC 12-24 V
Conduit connector
(a) Pow er supply
(b) I ndoor/outdoor
Note:
• Removing the handle increases the effectiveness of the iring operation.
• Be sure to reinstall the handle.
Lock nut
• Connect ires to the matching numbers of terminals.
• Be sure to attach each scre to its correspondent terminal hen
securing the cord and/or the w ire to the terminal block .
CONNECTING W IRES AND CONNECTING GROUND W IRE
• Use solid conductor Min. AWG14 or stranded conductor Min. AWG14.
• Use double insulated copper ire ith 600 V insulation.
• Use copper conductors only.
* Follow local electrical code.
POW ER SUPPLY CABLE
• Use solid or stranded conductor Min. AWG8.
• Use copper conductors only.
* Follow local electrical code.
GROUND W IRE
• Use solid or stranded conductor Min. AWG8.
Grounding
• Use copper conductors only.
terminal *
* Follow local electrical code.
W ARNING:
• Use the indoor/outdoor unit connecting ire that meets the Stand-
ards to connect the indoor and outdoor units and fix the
Ground
the terminal block securely so that no external force is conveyed
to the connecting section of the terminal block . An incomplete
connection or fixing of the
For future servicing, give extra length to the connecting ires.
• Turn on the main po er
(-20°C) or higher.
• Under conditions of -4°F (-20°C), it needs at least 4hr stand by
before the units operate in order to w arm 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
ire could result in a fire.
hen the ambient temperature is -4°F
ire to
E n-4