E n-4
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.
E LE CTRI CAL SPE CI FI CATI ONS
OUTDOOR UNI T
MXZ-2C20NA2
Pow er supply
(V, PHASE, Hz)
208/230, 1, 60
Max. Fuse size
(time delay) (A)
20
Min. Circuit
Ampacity (A)
17.2
Fan motor
(F.L.A)
1.77
Com-
pressor
(R.L.A)
10.7
(L.R.A)
15.5
Control voltage
I ndoor unit-Remote controller : (W ireless)
Indoor unit-Outdoor unit : DC 12-24 V
1-3/8 in.
(35 mm)
5/8 in.
(15 mm)
Lead w ire
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 screw , 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 ire to the terminal block securely so
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.
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.
• Use copper conductors only.
*
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 ire to
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 ire could result in a fire.
Remark :
* Use a ring tongue terminal in order to connect a ground w ire to terminal.
• 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 .
Terminal block
Grounding
terminal *
20 8 /230 V AC
1 phase 60 Hz
Grounding
terminal *
Terminal block
Ground
OUTDOOR UNI T
Pow er supply
208/230 V AC
1 phase 2 ires 60 Hz
Disconnect
sw itch
Grounding
terminal *
Terminal block
Terminal block
Terminal block
For future servicing, give extra length to the connecting ires.
Conduit connector
Trade size of conduit
(a) Pow er supply
3/4 in.
(b) I ndoor/outdoor
1/2 in.
I NDOOR UNI T
Note:
• Removing the handle increases the effectiveness of the iring operation.
• Be sure to reinstall the handle.
• Turn on the main po er hen the ambient temperature is -4°F
(-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.
Service panel
Screw s
Lock nut
Conduit connector
Conduit plate
Screw
BH79A325H02_en.indd 4
2018/03/05 16:50:33
