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User Manual - Page 5

For 1887877.

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En-4
2-2. CONNECTING WIRES FOR OUTDOOR UNIT
• Besuretousespecialcircuitsforroomairconditioner.
• Wiringworkshouldbebasedonapplicabletechnicalstandards.
• Wiringconnectionsshouldbemadefollowingthediagram.
• Screwsshouldbetightenedsotheywon’tloosen.
ELECTRICAL SPECIFICATIONS
OUTDOOR UNIT
MXZ-2C20NAHZ2 MXZ-3C24NAHZ2 MXZ-3C30NAHZ2 MXZ-5C42NA2
Power supply
(V,PHASE,Hz)
208/230, 1, 60
Max. Fuse size
(time delay) (A)
40
Min. Circuit
Ampacity (A)
28.9 29.9 29.9 31.9
Fan motor
(F.L.A)
1.90
Com-
pressor
(R.L.A) 20
(L.R.A) 28.8
Controlvoltage
Indoor unit-Remote controller : (Wireless)
Indoorunit-Outdoorunit:DC12-24V
1-3/8 in.
(35 mm)
5/8 in.
(15 mm)
Lead wire
1)Removetheservicepanel.
2)Removetheconduitplate.
3)Attachtheconduitconnectortoconduitplatewithlocknutthensecure
ittotheunitwithscrews.Besuretoattachtheconduitconnectorsin
the correct locations according to their sizes.
4)ConnectgroundwirestotheTBbed.
5) Loosen terminal screw, and connect indoor/outdoor unit connecting
wire(B)fromtheindoorunitcorrectlyontheterminalblock.Becareful
nottomakemis-wiring.Fixthewire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screwstopreventthemfromloosening.After
tightening,pullthewireslightlytoconrmthattheydonotmove.
7) Perform 5) and 6) for each indoor unit.
8) Connect power supply cord (A).
9)Closetheservicepanelsecurely.Makesurethat3-2.PIPECONNEC-
TION is completed.
Connecting order
• Connecttheterminal
blockinfollowingorder.
Power supply
Terminalblockfor
indoor/outdoor unit
Servicepanel
Screws
Locknut
Conduit connector
CONNECTING WIRES AND CONNECTING GROUND WIRE
• UsesolidconductorMin.AWG14orstrandedconductorMin.AWG14.
• Usedoubleinsulatedcopperwirewith600Vinsulation.
• Usecopperconductorsonly.
* Follow local electrical code.
POWER SUPPLY CABLE
• UsesolidorstrandedconductorMin.AWG8.
• Usecopperconductorsonly.
* Follow local electrical code.
GROUND WIRE
• UsesolidorstrandedconductorMin.AWG8.
• Usecopperconductorsonly.
* Follow local electrical code.
WARNING:
• Usetheindoor/outdoorunitconnectingwirethatmeetstheStand-
ardstoconnecttheindoorandoutdoorunitsandxthewireto
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.
Remark:
* Adisconnectswitchshouldberequired.Checkthelocalcode.
** Use a ring tongue terminal in order to connect a ground wire to terminal.
• 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.
GR
Terminalblock
Grounding
terminal **
208/230 V AC
1 phase 60 Hz
Grounding
terminal **
Terminalblock
Ground
OUTDOOR UNIT
Power supply
208/230VAC
1phase2wires60Hz
Disconnect
switch *
Grounding
terminal **
Terminalblock Terminalblock
Terminalblock
Forfutureservicing,giveextralengthtotheconnectingwires.
Conduit connector Trade size of conduit
(a) Power supply 3/4 in.
(b) Indoor/outdoor 1/2 in.
Conduit plate U
Conduit plate T
< 2C >
< 3C >
< 5C >
A B C
P
A B C
P
A B C A B C
PP
MXZ-2C A→B→P
MXZ-3C A→B→C→P
MXZ-5C A→B→C→D→E→P
A - B (MXZ-2C)
A - C (MXZ-3C)
A - E (MXZ-5C)
INDOOR UNIT
A - B (MXZ-2C)
A - C (MXZ-3C)
A - E (MXZ-5C)
* C : MXZ-3C only
Attach the conduit
connector (a)
Attach the conduit
connector (b)
Conduit plate U
<MXZ-3C/5C only>
Conduit plate T
A B C
D E
P
A B C
D E
P
A B C
E
P
A B C
D ED
P
Power supply
Terminalblockfor
indoor/outdoor unit
<MXZ-2C/3C>
<MXZ-5C>
Note:
• Removingthehandleincreasestheeffectivenessofthewiringoperation.
• Besuretoreinstallthehandle.
<MXZ-3C/5C only>
Handle
• Turnon the main power when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 warm the electrical parts.
BH79A240H02_en.indd 4 2016/03/24 14:46:29
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