Mitsubishi Electric MXZ-4B36NA User manual

Brand: Mitsubishi Electric

Model: MXZ-4B36NA

Category: Power heat guns

Type: User manual

This manual is also suitable for

MXZ-3B24NA

Split-type Air-Conditioner

MXZ-3B24NA

MXZ-3B30NA

MXZ-4B36NA

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Installation Manual For INSTALLER

• This manual only describes the installation of outdoor unit.

When installing the indoor unit, refer to the installation manual of indoor unit.

Any structural alterations necessary for installation must comply with local build-

ing code requirements.

Notice d’installation

Destinée à l

’

INSTALLATEUR

• Cette notice ne décrit que l’installation de l’appareil extérieur.

Lors de l’installation de l’appareil intérieur, consultez la notice d’installation de cet

appareil.

Toute altération structurelle requise pour l’installation doit être conforme aux exi-

gences du code du bâtiment local.

Manual de instalación Para el INSTALADOR

• En este manual sólo se describe la instalación de la unidad exterior.

Para instalar la unidad interior, consulte el manual de instalación de dicha uni-

dad.

 Cualquiermodicaciónestructuralnecesariaparallevaracabolainstalaciónde-

berácumplirlasnormasdeedicaciónlocales.

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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orelectricshock,injuryduetotheunit

falling,orleakageofwater.

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 Perform electrical work according to the installation manual and 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electri-

cal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.

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secure-

lyandattachthewiresrmlytotheterminalblockconnectingsections

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

 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 out-

let.

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sup-

ply 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out-

door unit are not attached securely, it could result in a re or an electric

shockduetodust,water,etc.

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

otherthanthespeciedrefrigerant(R410A)enterstherefrigerantcir-

cuit.

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

sure rise or an explosion.

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.Re-

frigerantleakagemaycausesuffocation.Ventilatetheroom.

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 dis-

connecting 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re-

frigeration 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re-

frigerantleakage.

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

tions.

n Ground the unit correctly.

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

ephoneground.Defectivegroundingcouldcauseelectricshock.

1-2.SPECIFICATIONS

1. BEFOREINSTALLATION

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.

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

n Depending on the installation area, install a Ground Fault Interrupt (GFI)

circuit breaker.

 IftheGroundFaultInterrupt(GFI)circuitbreakerisnotinstalled,anelectric

shockcouldoccur.

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(5/32in.)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 ...............................5

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

5. RELOCATION AND MAINTENANCE ..........................................7

Model

Power supply Pipe length and height difference

*1,*2,*3,*4,*5,*6

RatedVoltage Frequency Max. pipe length per indoor

unit/formulti-system Max. height difference

*7 Max. no. of bends per in-

doorunit/formultisystem

RefrigerantadjustmentA

MXZ-3B24NA

MXZ-3B30NA

MXZ-4B36NA

208/230V 60 Hz 25m(82ft)/70m(230ft) 15m(49ft) 25/70 20g/m(1.08ozeach5ft)

*1Neverusepipeswith thickness lessthanspecied.The pressure resist-

ancewillbeinsufcient.

*2 Use a copper pipe or a copper-alloy seamless pipe.

*3Becarefulnottocrushorbendthepipeduringpipebending.

*4Refrigerantpipebendingradiusmustbe100mm(4in.)ormore.

*5Insulationmaterial:Heatresistingfoamplastic0.045specicgravity

*6Besureto use the insulationofspeciedthickness. Excessive thickness

maycauseincorrectinstallationoftheindoorunitandinsufcientthickness

may cause dew drippage.

*7 If the outdoor unit is installed higher than the indoor unit, max. height differ-

enceisreducedto10m(33ft).

*8Ifpipelengthexceeds40m(131ft),additionalrefrigerant(R410A)charge

is required. (No additional charge is required for pipe length less than

40m(131ft).)

 Additionalrefrigerant(m)=A×(pipelength(m)–40)

 Additionalrefrigerant(ft) =A×(pipelength(ft)–131)

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1-4.SELECTINGTHEINSTALLATIONLOCATION

• Where it is not exposed to strong wind.

• Whereairowisgoodanddustless.

• Whererainordirectsunshinecanbeavoidedasmuchaspossible.

• Where neighbours are not annoyed by operation sound or hot air.

• Whererigidwallorsupportisavailabletopreventtheincreaseofoperation

soundorvibration.

• Wherethereisnoriskofcombustiblegasleakage.

• When installing the unit, be sure to secure the unit legs.

• Whereitisatleast3m(10ft.)awayfromtheantennaofTVsetorradio.

OperationoftheairconditionermayinterferewithradioorTVreceptionin

areaswherereceptionisweak.Anampliermayberequiredfortheaffected

device.

• Install the unit horizontally.

• Please install it in an area not affected by snowfall or blowing snow. In

areaswithheavy snow, please install acanopy,apedestaland/or some

bafeboards.

Note:

Itisadvisabletomakeapipingloopnearoutdoorunitsoastoreducevibra-

tion transmitted from there.

Note:

When operating the air conditioner in low outside temperature, be sure to

follow the instructions described below.

• Neverinstalltheoutdoorunitinaplacewhereitsairinlet/outletsidemay

be exposed directly to wind.

• Topreventexposuretowind,installtheoutdoorunitwithitsairinletside

facing the wall.

•

Topreventexposuretowind,itisrecommendedtoinstallabafeboardon

the air outlet side of the outdoor unit.

Avoidthefollowingplacesforinstallationwhereairconditionertroubleisli-

able to occur.

• Whereammablegascouldleak.

• Where there is much machine oil.

• Salty places such as the seaside.

• Wheresuldegasisgeneratedsuchasahotspring.

• Where there is high-frequency or wireless equipment.

• WherethereisemissionofhighlevelsofVOCs,includingphthalatecom-

pounds,formaldehyde,etc.,whichmaycausechemicalcracking.

3. Obstaclesinfront(blowing)only

Whenthereisanobstacleinfrontoftheunitasshowninthegure,open

spaceabove,behind,andonthesidesoftheunitisrequired.

2. Front (blowing) side open

Aslongasspaceindicatedinthegureisprovided,itisallowedtoinstall

the unit where obstacles are behind and on the sides of the unit. (No ob-

stacleabovetheunit)

FREESPACEREQUIREDAROUNDOUTDOORUNIT

Servicespace

• When installing the unit in an area that is enclosed with walls such as a

verandah,besuretohaveenoughspaceasshownbelow.

In this case, the air conditioning capacity and power consumption might

deteriorate.

• When installing two or more units, do not install the units in front or be-

hind each other.

1.Obstaclesabove

When there is no obstacle in front and on the sides of the unit, it is allowed

toinstall the unit whereanobstacleis above the unitonlyif the space

showninthegureisprovided.

6. Service space

Providespaceforserviceandmaintenanceasshowninthegure.

500(19-11/16)ormore

100(3-15/16)ormore

5. Obstaclesinfront,behindandonside(s)

(Unit:mm(inch))

Heightoftheobstacleis1200(47-1/4)orless

500(19-11/16)ormore

100(3-15/16)ormore

500(19-11/16)

or more

350(13-25/32)ormore

100(3-15/16)ormore

350(13-25/32)ormore

100(3-15/16)ormore

200(7-7/8)ormore

350(13-25/32)ormore

100(3-15/16)

or more

200(7-7/8)ormore

350(13-25/32)

or more

500(19-11/16)

or more

500(19-11/16)

or more

4. Obstaclesinfrontandbehind

The unit can be used by attaching an optional outdoor blowing guide

(MAC-856SG)(butbothsidesandtopareopen).

100(3-15/16)ormore

Blowingguide(MAC-856SG)

500(19-11/16)ormore

1-3.SELECTINGOPTIONALDIFFERENT-DIAMETERJOINTS

Ifthediameterofconnectionpipedoesnotmatchtheportsizeofoutdoorunit,useoptionaldifferent-diameterjointsaccordingtothefollowingtable.

Port size of outdoor unit Optionaldifferent-diameterjoints(portsizeofoutdoorunit→diameterofconnectionpipe)

MXZ-3B MXZ-4B Liquid/Gas 6.35(1/4)→9.52(3/8):PAC-493PI

9.52(3/8)→12.7(1/2):MAC-454JP

9.52(3/8)→15.88(5/8):PAC-SG76RJ

12.7(1/2)→9.52(3/8):MAC-A455JP

12.7(1/2)→15.88(5/8):MAC-A456JP

Refer to the installation manual of indoor unit for the diameter of connection pipe of indoor unit.

A UNIT 6.35(1/4)/12.7(1/2)

B - C UNIT B - D UNIT 6.35(1/4)/9.52(3/8)

(Unit:mm(inch))

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1-5.INSTALLATIONDIAGRAM

Units should be installed by licensed contractor according to

local code requirements.

Aftertheleaktest,applyinsulat-

ing material tightly so that there is

no gap.

When the piping is to be at-

tached to a wall containing metals

(tinplated) ormetalnetting, use

a chemically treated wooden

piece20mm(25/32in.)orthicker

between the wall and the piping

or wrap 7 to 8 turns of insulation

vinyltapearoundthepiping.

To use existing piping, perform

COOLoperationfor30minutes

andpumpdownbeforeremoving

theoldairconditioner.Remake

areaccording tothe dimension

for new refrigerant.

PARTSTOBEPROVIDEDATYOURSITE

(A) Power supply cord* 1

(B) Indoor/outdoorunitconnectingwire* 1

(D) Wallholecover 1

(E) Piping tape 1

(F)

Extensiondrainhose(orsoftPVC

hose,15mm(19/32in.)inner

diameterorhardPVCpipeVP16)

(G) Refrigeration oil Little

amount

(H) Putty 1

(I) Pipexingband 2 to 7

(J) Fixingscrewfor(I) 2 to 7

(K) Wallholesleeve 1

* Note:

Place indoor/outdoor unit connecting wire (B) and

powersupplycord(A)atleast1m(3ft.)awayfrom

theTVantennawire.

The“Q’ty”for(B)to(K)intheabovetableisquan-

tity to be used per indoor unit.

More than

100 mm

(3-15/16in.)

Open as a rule

More than 500 mm

(19-11/16in.)ifthe

front and both sides

are open

Morethan100mm(3-15/16in.)

Morethan200mm(7-7/8in.)

if there are obstacles to both

sides

Open as a rule

Morethan500mm(19-11/16in.)ifthe

back,bothsidesandtopareopen

Morethan350mm

(13-25/32in.)

Outdoorunitinstallation

Air inlet

Air outlet

Air inlet

900(35-7/16)

500(19-11/16)

200(7-7/8)

2-U-shape notched holes

(BaseboltM10)

320

(12-19/32)

2-12(15/32)×36(1-31/32)ovalholes

(BaseboltM10)

355

(13-31/32)

387(15-1/4)

Unit:mm(inch)

JG79A417H01_en.indd 3 10/12/2010 9:19:44 AM

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2. OUTDOORUNITINSTALLATION

2-1.INSTALLINGTHEUNIT

Fix here with

M10 bolts.

Makethesetting

depth deeper.

Makewithwider.

Anchor leg

25(31/32)orless

Anchor both length Anchor both pitch

(Unit:mm(inch))

• Besuretoxtheunit’slegswithboltswheninstallingit.

• Besuretoinstalltheunitrmlytoensurethatitdoesnotfallbyanearthquakeoragust.

• Refertothegureintherightforconcretefoundation.

• Donotusethedrainsocketandthedraincapsinthecoldregion.Drainmayfreezeanditmakesthefanstop.

500

(19-11/16)

330(13)

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-3B24NA MXZ-3B30NA MXZ-4B36NA

Powersupply(V,PHASE,Hz) 208/230,1,60

Max.Fusesize(timedelay)(A) 20 25

Min.CircuitAmpacity(A) 18 23

Fanmotor(F.L.A) 0.93 0.93

Compressor (R.L.A) 11 14.4

(L.R.A) 15 15

Controlvoltage Indoorunit-Remotecontroller:(Wireless)

Indoorunit-Outdoorunit:DC12-24V

35mm

(1-3/8in.)

15 mm

(5/8in.)

Lead wire

1)Removetheservicepanel.

2)Removetheconduitcover.

3)Attachtheconduitconnectortoconduitcoverwithlocknutthense-

cure it to the unit with screws.

4)ConnectgroundwirestotheTBsupport.

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 CON-

NECTION is completed.

• Aftermakingconnectionsbetweenbothpowersupplycord(A)and

indoor/outdoor unit connecting wire (B), be sure to x both cable

and wire with cable clamps.

Connecting order

• Connecttheterminalblockin

following order.

A→B→C→D→P

CONNECTINGWIRESANDCONNECTINGGROUNDWIRE

• Use solid conductor AWG14 or stranded conductor AWG14.

• Usedoubleinsulatedcopperwirewith600Vinsulation.

• Use copper conductors only.

* Follow local electrical code.

POWERSUPPLYCABLEANDGROUNDWIRE

• Use solid or stranded conductor AWG14 (MXZ-3B)/AWG12 (MXZ-

4B).

• 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:

* 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.

Terminalblock

Grounding

terminal **

208/230VAC

1phase60Hz

Grounding

terminal **

Terminalblock1 Ground

OUTDOOR UNIT

Power supply

208/230VAC

1 phase 2 wires 60 Hz

Disconnect

switch * Grounding

terminal **

Terminalblock Terminalblock

INDOOR UNIT

Terminalblock

Forfutureservicing,giveextralengthtotheconnectingwires.

Servicepanel

Screws 4B36NA

Terminalblock

for power supply

Power supply

Terminalblockfor

indoor/outdoorunit

A – C D

Locknut

Conduitcover

Connector

Dunitisfor4B36NAonly

A – C D

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3-2.PIPECONNECTION

1)Applyathincoatofrefrigerationoil(G)tothearedendsofthepipesand

the pipe connections of the outdoor unit.

2)Alignthecenterofthepipewiththatofthepipeconnectionsoftheoutdoor

unit,thenhandtightenthearenut3to4turns.

3)Tightenthearenutwithatorquewrenchasspeciedinthetable.

• Over-tighteningmaycausedamagetothearenut,resultinginrefriger-

antleakage.

• Be sure to wrap insulation around the piping. Direct contact with the bare

piping may result in burns or frostbite.

3-3.INSULATIONANDTAPING

1)Coverpipingjointswithpipecover.

2)Foroutdoorunitside,surelyinsulateeverypipingincludingvalves.

3)Usingpipingtape(E),applytapingstartingfromtheentryofoutdoorunit.

• Stoptheendofpipingtape(E)withtape(withadhesiveagentattached).

• Whenpipinghavetobearrangedthroughaboveceiling,closetorwhere

the temperature and humidity are high, wind additional commercially sold

insulationtopreventcondensation.

WARNING

When installing the unit, securely

connect the refrigerant pipes before

starting the compressor.

CAUTION

When there are the ports which are

not used, make sure their nuts are

tightened securely.

Fig. 1 Fig. 2 Fig.3

Fig. 4 Fig. 5 Fig. 6

TiltedUnevenBurred

Good No good

Burr Copper pipe

Spare reamer

Pipe cutter

Smooth all

around

Evenlength

all around

Inside is shin-

ing without any

scratches.

Flare nut

Die Copper pipe

Clutch type

Flaring tool

Wing nut type

Copper

pipe

Pipe diameter

[mm(inch)]

Nut

(mm)

A[mm(inch)] Tightening torque

Clutch type tool for R410A Clutch type tool for R22 Wing nut type tool for R22 N•m kgf•cm ft•Ib

ø6.35(1/4) 17

0 to 0.5

(0to0.02)

1.0 to 1.5

(0.04to0.06)

1.5 to 2.0

(0.06to0.08)

13.7to17.7 140 to 180 10to13

ø9.52(3/8) 22 34.3to41.2 350to420 25to30

ø12.7(1/2) 26 2.0 to 2.5

(0.08to1.0)

49.0 to 56.4 500 to 575 36to42

ø15.88(5/8) 29 73.5to78.4 750 to 800 54 to 58

3. FLARINGWORKANDPIPECONNECTION

3-1.FLARINGWORK

1)Cutthecopperpipecorrectlywithpipecutter.(Fig.1,2)

2)Completelyremoveallburrsfromthecutcrosssection

ofpipe.(Fig.3)

• Aimthecopper pipedownwardwhileremovingburrs

topreventburrsfromdroppinginthepipe.

3)Removearenutsattachedtoindoorandoutdoorunits,

thenputthem onpipehavingcompletedburrremoval.

(Notpossibletoputthemonafteraringwork.)

4)Flaringwork (Fig.4,5).Firmlyholdcopperpipeinthe

dimension shown in the table. Select A mm from the

table according to the tool selected.

5)Check

• ComparethearedworkwithFig.6.

• Ifareisnotedtobedefective,cutoffthearedsec-

tionanddoaringworkagain.

4-1.PURGINGPROCEDURESANDLEAKTEST

4. PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN

1)Removeserviceportcapofstopvalveonthesideoftheoutdoorunitgas

pipe.(Thestopvalvesarefullyclosed andcoveredincaps intheirinitial

state.)

2)Connectgaugemanifoldvalveandvacuum pump to service portofstop

valveonthegaspipesideoftheoutdoorunit.

3)Runthevacuumpump.(Vacuumizeformorethan15minutes.)

4)Checkthevacuumwithgaugemanifoldvalve,thenclosegaugemanifold

valve,andstopthevacuumpump.

5)Leave as it is for one or two minutes. Make sure the pointer of gauge

manifoldvalveremainsinthesameposition.Conrmthatpressuregauge

shows –0.101MPa[Gauge](–760mmHg)(–30in.Hg).

6)Removegaugemanifoldvalvequicklyfromserviceportofstopvalve.

7)Fullyopen all stop valves on the gas pipe and the liquid pipe. Operating

without fully opening lowers the performance and this causes trouble.

8)Referto1-2.,andchargetheprescribed amountofrefrigerantifneeded.

Be sure to charge slowly with liquid refrigerant. Otherwise, composition of

the refrigerant in the system may be changed and affect performance of

the air conditioner.

9)Tightencapofserviceporttoobtaintheinitialstatus.

)Leaktest

Serviceportcap

(Torque13.7to

17.7 N•m, 140 to

180kgf•cm, 10 to

13ft•lb)

Stopvalve

for GAS

Stopvalvecap

(Torque 19.6 to 29.4 N•m,

200to300kgf•cm,15to

22ft•lb)

Gauge manifold

valve(forR410A)

Compound pressure

gauge(forR410A)

–0.101MPa

[–760 mmHg

(–30in.Hg)]

Handle

Low

Handle High

Vacuumpump

(forR410A)

Charge hose

(forR410A)

*Close

*Open

Hexagonal wrench

*4 to 5 turns

Stopvalve

for LIQUID

Pressure gauge

(forR410A)

Precautions when using

thecontrolvalve

Whenattachingthecontrolvalveto

theserviceport,valvecoremayde-

form or loosen if excess pressure is

applied.Thismaycausegasleak.

Serviceport

Charge hose

(forR410A)

Body

Open

Control

valve

Whenattachingthecontrolvalveto

theserviceport,makesurethatthe

valvecoreisinclosedposition,and

then tighten part A. Do not tighten

partAorturnthebodywhenvalve

core is in open position.

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4-3.TESTRUN

• Testruns of the indoorunitsshould be performedindividually.See the installation manual

comingwiththeindoorunit,andmakesurealltheunitsoperateproperly.

• If the test run with all the units is performed at once, possible erroneous connections of the

refrigerantpipesandtheindoor/outdoorunitconnectingwirescannotbedetected.Thus,be

sure to perform the test run one by one.

About the restart protective mechanism

Oncethecompressorstops,therestartpreventivedeviceoperatessothecompressorwillnot

operatefor3minutestoprotecttheairconditioner.

Wiring/piping correction function

Thisunithas awiring/pipingcorrectionfunctionwhich correctswiringandpipingcombination.

Whenthereispossibilityofincorrectwiringandpipingcombination,andconrmingthecombi-

nationisdifcult,usethisfunctiontodetectandcorrectthecombinationbyfollowingtheproce-

dures below.

Makesurethatthefollowingisdone.

• Power is supplied to the unit.

• Stopvalvesareopen.

Note:

During detection, the operation of the indoor unit is controlled by the outdoor unit. During detec-

tion, the indoor unit automatically stops operation. This is not a malfunction.

4-2.GASCHARGE

Perform gas charge to unit.

1)Connectgascylindertotheserviceportofstopvalve.

2)Performairpurgeofthepipe(orhose)comingfromrefrigerantgascylinder.

3)Replenishspeciedamountoftherefrigerant,whileoperatingtheairconditionerforcooling.

Note:

Incaseofaddingrefrigerant,complywiththequantityspeciedfortherefrigeratingcycle.

CAUTION:

When charging the refrigerant system with additional refrigerant, be sure to use liquid refriger-

ant. Adding gas refrigerant may change the composition of the refrigerant in the system and

affect normal operation of the air conditioner. Also, charge the liquid refrigerant slowly, otherwise

thecompressorwillbelocked.

To maintain the high pressure of the gas cylinder, warm the gas cylinder with warm water (under

40°C(140°F))duringcoldseason.Butneverusenakedreorsteam.

Procedure

Pressthepiping/wiringcorrectionswitch(SW871)1minuteormoreafterturningonthepower

supply.

• Correction completes in 10 to 15 minutes. When the correction is completed, its result is

shown by LED indication. Details are described in the following table.

• Tocancelthisfunctionduringitsoperation,pressthepiping/wiringcorrectionswitch(SW871)

again.

• Whenthecorrectioncompletedwithouterror,donotpressthepiping/wiringcorrectionswitch

(SW871)again.

Whentheresultwas“cannotbecorrected”,pressthepiping/wiringcorrectionswitch(SW871)

againtocancelthisfunction.Then,conrmthewiringandpipingcombinationinaconventional

manner by operating the indoor units one by one.

• Theoperationisdonewhilethepowerissupplied.Makesurenottocontactpartsotherthan

theswitch,includingtheP.C.board.Thismaycauseelectricshockorburnbyhotpartsand

livepartsaroundtheswitch.ContactingthelivepartsmaycauseP.C.boarddamage.

• TopreventelectroniccontrolP.C.boarddamage,makesuretoperformstaticeliminationbe-

fore operating this function.

• Thisfunctiondoesnotoperatewhentheoutsidetemperatureis0°C(32°F)orbelow.

LEDindicationduringdetection:

LED

1(Red) 2(Yellow) 3(Green)

Lighted Lighted Blinking

Resultofpiping/wiringcorrectionfunction

LED Result

1(Red) 2(Yellow) 3(Green)

Lighted Not lighted Lighted Completed

(Correctedsuccessfully)

Blinking Blinking Blinking Cannot be corrected

Other indications

Refer to “SAFETY PRE-

CAUTIONS WHEN LED

FLASHES”locatedbehind

theservicepanel.

4-4.EXPLANATIONTOTHEUSER

• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousetheairconditioner(howtousetheremotecontroller,howtoremovetheairlters,howto

removeorputtheremotecontrollerintheremotecontrollerholder,howtoclean,precautionsforoperation,etc.).

• Recommend the user to read the OPERATING INSTRUCTIONS carefully.

Union

Stopvalve

Liquid

pipe

Indoor

unit

Stopvalvewith

serviceport Gas

pipe

Refrigerant gas

cylinder

operatingvalve

(forR410A) Gauge manifold

valve(forR410A)

Charge hose

(forR410A)

Refrigerant gas cylinder for R410A with siphon

Electronic scale for refrigerant charging

Refrigerant(liquid)

Outdoor

unit

Union

D unit is for

4B36NAonly

JG79A417H01_en.indd 6 10/12/2010 9:19:47 AM

En-7

5. RELOCATIONANDMAINTENANCE

5-1.PUMPINGDOWN

When relocating or disposing of the air conditioner, pump down the system following the procedure below so that refrigerant is not released into the atmosphere.

1)Connectthegaugemanifoldvalvetotheserviceportofthestopvalveonthegaspipesideoftheoutdoorunit.

2)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.

3)Closethestopvalveonthegaspipesideoftheoutdoorunitalmostcompletelysothatitcanbeeasilyclosedfullywhenthepressuregaugeshows0MPa[Gauge]

(0lbf/in.2[0kgf/cm2]).

4)StarttheemergencyCOOLoperationonalltheindoorunits.

To start the emergency operationinCOOLmode,disconnectthepowersupplyplugand/orturnoffthebreaker.After15seconds,connectthepowersupplyplug

and/orturnonthebreaker,andthenpresstheE.O.SWonce.(Theemergency COOL operationcanbeperformedcontinuouslyforupto30minutes.)

5)

Fullyclosethestopvalveonthegaspipesideoftheoutdoorunitwhenthepressuregaugeshows0.05to0MPa[Gauge](approx.7.25to0lbf/in

[0.5to0kgf/cm

]).

6)Stoptheemergency COOL operation.

 Tostopoperation,presstheE.O.SWseveraltimesuntilallLEDlampsturnoff.Refertooperatinginstructionsfordetails.

When pumping down the refrigerant, stop the compressor before disconnecting

the refrigerant pipes. The compressor may burst if air etc. get into it.

WARNING

JG79A417H01_en.indd 7 10/12/2010 9:19:47 AM