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2 - 2 . C O N N E C T I N G
W I R E S F O R O U T D O O R U N I T
• Be sure to use special circuits for room air conditioner.
• Wiring w ork should be based on applicable technical standards.
• Wiring connections should be made follow ing the diagram.
• Screw s should be tightened so they w on't loosen.
1) Remove the service panel.
2) Remove the conduit plate.
3) Attach the conduit connector to conduit plate w ith lock nut then secure
it to the unit w ith screw s. Be sure to attach the conduit connectors in
the correct locations according to their sizes.
4) Connect ground w ires to the TB bed.
5) Loosen terminal scre w , and connect indoor/outdoor unit connecting
w ire (B) from the indoor unit correctly on the terminal block. Be careful
not to make mis-w iring. Fix the w 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) irmly 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. Ma e sure that 3-2. PIPE CONNEC-
TION is completed.
Screw s
Service panel
Connecting order
• Connect the terminal
block in follow ing order.
A→B→P
MXZ-2C
A→B→C→P
MXZ-3C
A→B→C→D→E→P
MXZ-5C
R e m a rk :
* A disconnect sw itch should be required. Check the local code.
** Use a ring tongue terminal in order to connect a ground w ire to terminal.
A - B (MXZ-2C)
INDOOR UNIT
A - C (MXZ-3C)
A - E (MXZ-5C)
Terminal block
Grounding
terminal **
2 0 8 / 2 3 0 V A C
1 p h a s e 6 0 H z
Disconnect
sw itch *
Grounding
terminal **
Terminal block
A - B (MXZ-2C)
A - C (MXZ-3C)
A - E (MXZ-5C)
Conduit plate T
Handle
Lock nut
Conduit plate U
<MXZ-3C/5C only>
<MXZ-2C/3C>
P
Pow er supply
A B C
Terminal block for
indoor/outdoor unit
<MXZ-5C>
P
Pow er supply
D E
Terminal block for
A B C
indoor/outdoor unit
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 w ires 60 Hz
GR
Terminal block
Terminal block
OUTDOOR UNIT
ELECTRICAL SPECIFICATIONS
OUTDOOR UNIT MXZ-2C20NAHZ3 MXZ-3C24NAHZ3 MXZ-3C30NAHZ3
Pow er supply
(V, PHASE, Hz)
Max. Fuse size
(time delay) (A)
Min. Circuit
28.9
Ampacity (A)
Fan motor
(F.L.A)
(R.L.A)
Com-
pressor
(L.R.A)
Indoor unit-Remote controller : (Wireless)
Control voltage
Indoor unit-Outdoor unit : DC 12-24 V
Conduit connector
(a) Pow er supply
(b) Indoor/outdoor
N o t e :
• Removing the handle increases the effectiveness of the iring operation.
• Be sure to reinstall the handle.
< 2C >
< 3C >
< 5C >
Attach the conduit
connector (a)
Conduit connector
P
A B C
P
D E
A B C
•
C o n n e c t w i re s t o t h e m a t c h i n g n u m b e rs o f t e rm i n a l s .
•
B e s u re t o a t t a c h e a c h s c re w t o i t s c o rre s p o n d e n t t e rm i n a l w h e n
s e c u ri n g t h e c o rd a n d / o r t h e w i re t o t h e t e rm i n a l b l o c k .
C O N N E C T I N G
W I R E S A N D C O N N E C T I N G
• Use solid conductor Min. AWG14 or stranded conductor Min. AWG14.
• Use double insulated copper w ire w ith 600 V insulation.
• Use copper conductors only.
* F o l l o w
l o c a l e l e c t ri c a l c o d e .
P O W E R S U P P L Y C A B L E
• Use solid or stranded conductor Min. AWG8.
• Use copper conductors only.
* F o l l o w
l o c a l e l e c t ri c a l c o d e .
G R O U N D W I R E
• Use solid or stranded conductor Min. AWG8.
Grounding
• Use copper conductors only.
terminal **
* F o l l o w
l o c a l e l e c t ri c a l c o d e .
W A R N I N G :
•
U s e t h e i n d o o r / o u t d o o r u n i t c o n n e c t i n g w i r e t h a t m e e t s t h e S t a n d -
ards to connect the indoor and outdoor units and fix the
Ground
t h e t e rm i n a l b l o c k s e c u re l y s o t h a t n o e x t e rn a l fo rc e i s c o n v e y e d
t o t h e c o n n e c t i n g s e c t i o n o f t h e t e rm i n a l b l o c k . A n i n c o m p l e t e
connection or fixing of the
or future servicing, give extra length to the connecting ires.
•
T u rn o n t h e m a i n p o w e r w h e n t h e a m b i e n t t e m p e ra t u re i s - 4 ° F
( - 2 0 ° C ) o r h i g h e r.
•
U n d e r c o n d i t i o n s o f - 4 ° F ( - 2 0 ° C ) , i t n e e d s a t l e a s t 4 h r s t a n d b y
b e fo re t h e u n i t s o p e ra t e i n o rd e r t o w a rm
208/230, 1, 60
40
29.9
29.9
1.90
20
28.8
Trade size of conduit
3/4 in.
1/2 in.
Conduit plate U
Conduit plate T
<MXZ-3C/5C only>
Attach the conduit
connector (b)
P
P
A B C
A B C
P
P
D
E
D E
A B C
A B C
G R O U N D W I R E
ire could result in a fire.
t h e e l e c t ri c a l p a rt s .
MXZ-5C42NA3
31.9
e n
* C : MXZ-3C only
ire to
4
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