1887927 User Manual

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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-2C20NA2

Power supply

(V,PHASE,Hz)

208/230, 1, 60

Max. Fuse size

(time delay) (A)

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

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 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/outdoorunit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:

* 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.

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.

INDOOR UNIT

Note:

• Removingthehandleincreasestheeffectivenessofthewiringoperation.

• Besuretoreinstallthe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.

Servicepanel

Screws

Locknut

Conduit connector

Conduit plate

Screw

BH79A325H03_en.indd 4 2018/08/06 13:12:24

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User Manual - Page 5