MXZ-3E54VAD User Manual

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1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY

• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.

• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.

• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.

• EquipmentcomplyingwithIEC/EN61000-3-12.

1-2. SPECIFICATIONS

CAUTION

(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)

n Do not install the unit by yourself (user).

 Incompleteinstallationcouldcausereorelectricshock,injuryduetotheunit

falling,orleakageofwater.Consultthedealerfromwhomyoupurchased

theunitoraqualiedinstaller.

n Perform the installation securely referring to the installation manual.

 Incompleteinstallationcouldcause re,electricshock, injuryduetothe

unitfalling,orleakageofwater.

n When installing the unit, use appropriate protective equipment and

tools for safety.

 Failuretodosocouldcauseinjury.

n Install the unit securely in a place which can bear the weight of the

unit.

 Iftheinstallationlocationcannotbeartheweightoftheunit,theunitcould

fallcausinginjury.

n Electrical work should be performed by a qualied, experienced electri-

cian, according to the installation manual. Be sure to use an exclusive

circuit. Do not connect other electrical appliances to the circuit.

 If the capacity of the power circuit is insufcient or there is incomplete

electricalwork,itcouldresultinareoranelectricshock.

n Do not damage the wires by applying excessive pressure with parts

or screws.

 Damagedwirescouldcausereorelectricshock.

n Be sure to cut off the main power in case of setting up the indoor P.C.

board or wiring works.

 Failuretodosocouldcauseelectricshock.

n Use the specied wires to connect the indoor and outdoor units

securely and attach the wires rmly to the terminal block connecting

sections so the stress of the wires is not applied to the sections. Do

not extend the wires, or use intermediate connection.

 Incompleteconnectingandsecuringcouldcausere.

n Do not install the unit in a place where inammable gas may leak.

 Ifgasleaksandaccumulatesintheareaaroundtheunit,itcouldcausean

explosion.

n Do not use intermediate connection of the power cord or the extension

cord and do not connect many devices to one AC outlet.

 Itcouldcauseareoranelectricshockduetodefectivecontact,defective

insulation,exceedingthepermissiblecurrent,etc.

n Be sure to use the parts provided or specied parts for the installation

work.

 Theuseofdefectivepartscouldcauseaninjuryorleakageofwaterdue

toare,anelectricshock,theunitfalling,etc.

n When plugging the power supply plug into the outlet, make sure that

there is no dust, clogging, or loose parts in both the outlet and the

plug. Make sure that the power supply plug is pushed completely into

the outlet.

 Ifthereisdust,clogging,orloosepartsonthepowersupplyplugorthe

outlet,itcouldcauseelectricshockorre.Ifloosepartsarefoundonthe

powersupplyplug,replaceit.

n Attach the electrical cover to the indoor unit and the service panel

to the outdoor unit securely.

 Iftheelectricalcoveroftheindoorunitand/ortheservicepanelofthe

outdoorunitarenotattachedsecurely,itcouldresultinareoranelectric

shockduetodust,water,etc.

n When installing, relocating, or servicing the unit, make sure that no

substance other than the specied refrigerant (R410A) enters the

refrigerant circuit.

 Anypresenceofforeignsubstancesuchasaircancauseabnormalpres-

sureriseandmayresultinexplosionorinjury.Theuseofanyrefrigerant

otherthan that specied for thesystem will cause mechanical failure,

systemmalfunction,orunitbreakdown.Intheworstcase,thiscouldlead

toaseriousimpedimenttosecuringproductsafety.

n Do not discharge the refrigerant into the atmosphere. If refrigerant

leaks during installation, ventilate the room.

 Ifrefrigerantcomesincontactwithare,harmfulgascouldbegenerated.

n Check that the refrigerant gas does not leak after installation has

been completed.



Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeameofa

fanheater,spaceheater,stove,etc.,harmfulsubstanceswillbegenerated.

n Use appropriate tools and piping materials for installation.

 ThepressureofR410Ais1.6timesmorethanR22.Notusingappropriate

toolsormaterialsandincompleteinstallationcouldcausethe pipesto

burstorinjury.

n When pumping down the refrigerant, stop the compressor before

disconnecting the refrigerant pipes.

 Iftherefrigerantpipesaredisconnectedwhilethecompressorisrunning

andthestopvalveisopen,aircouldbedrawninandthepressureinthe

refrigerationcyclecouldbecomeabnormallyhigh.Thiscouldcausethe

pipestoburstorinjury.

n When installing the unit, securely connect the refrigerant pipes

before starting the compressor.

 Ifthecompressorisstartedbeforetherefrigerantpipesareconnected

andwhenthestopvalveisopen,aircouldbedrawninandthepressure

intherefrigerationcyclecouldbecomeabnormallyhigh.Thiscouldcause

thepipestoburstorinjury.

n Fasten a are nut with a torque wrench as specied in this manual.

 Iffastenedtootight,aarenutmaybreakafteralongperiodandcause

refrigerantleakage.

n The unit shall be installed in accordance with national wiring regula-

tions.

n Earth the unit correctly.

 Donotconnecttheearthtoagaspipe,waterpipe,lightningrodortel-

ephoneearth.Defectiveearthingcouldcauseelectricshock.

n Be sure to install an earth leakage breaker.



Failuretoinstallanearthleakagebreakermayresultinelectricshockorre.

n Perform the drainage/piping work securely according to the installation

manual.

 Ifthereisdefectinthedrainage/pipingwork,watercoulddropfromtheunit,

soakinganddamaginghouseholdgoods.

n Do not touch the air inlet or the aluminum ns of the outdoor unit.

 Thiscouldcauseinjury.

n Do not install the outdoor unit where small animals may live.

 Ifsmallanimalsenterandtouchtheelectricpartsinsidetheunit,itcould

causeamalfunction,smokeemission,orre.Also,adviseusertokeep

theareaaroundtheunitclean.

WARNING

(Couldleadtodeath,seriousinjury,etc.)

Required Tools for Installation

Phillipsscrewdriver

Level

Scale

Utilityknifeorscissors

Torquewrench

Wrench(orspanner)

4mmhexagonalwrench

FlaretoolforR410A

GaugemanifoldforR410A

VacuumpumpforR410A

ChargehoseforR410A

Pipecutterwithreamer

ENGLISH

CONTENTS

1.BEFOREINSTALLATION............................................................ 1

2.OUTDOORUNITINSTALLATION...............................................4

3.FLARINGWORKANDPIPECONNECTION............................... 4

4.PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN......... 5

5.PUMPINGDOWN........................................................................ 6

Model

Powersupply*1 Wirespecications*2 Pipelengthandheightdifference

*3,*4,*5,*6,*7,*8

Rated

Voltage

Fre-

quency

Breaker

capacity

Powersupply

Indoor/outdoor

connecting

wire

Max.pipelength

perindoorunit/for

multi-system

Max.height

difference*9

Max.no.ofbends

perindoorunit/

formultisystem

Refrigerant

adjustment

A*10

MXZ-2E52VAD

230V 50Hz

15A

3-core2.5mm

4-core

1.0/1.5mm

20m/40m

15m

20/40

20g/mMXZ-3E54VAD

25A

25m/50m 25/50

MXZ-4E71VAD 25m/60m 25/60

1. BEFORE INSTALLATION

Note:

WhenconnectingtheMFZ-KJseriesindoorunit(s)tothisoutdoorunit,chargeadditionalrefrigerantaccordingtotheinstructionsinthetablebelow.

No.ofMFZ-KJindoorunits

Pipelength(L)

40morless Morethan40m

1unit 100gadditional(Total2800g) 100g+{(L-40)mx20g/m)}

2units 200gadditional(Total2900g) 200g+{(L-40)mx20g/m)}

3units 300gadditional(Total3000g) 300g+{(L-40)mx20g/m)}

4units 400gadditional(Total3100g) 400g+{(L-40)mx20g/m)}

BN79A289H01_en.indd 1 2016/04/20 14:52:57

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User Manual - Page 2