Mitsubishi Electric MXZ-4F80VGD User manual

Split-type Air-Conditioner
MXZ-4F80VGD
MXZ-5F100VGD
English
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.
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1
1. BEFORE INSTALLATION
Required Tools for Installation
ENGLISH
CONTENTS
1. BEFORE INSTALLATION ............................................................1
2. OUTDOOR UNIT INSTALLATION ...............................................7
3. FLARING WORK AND PIPE CONNECTION...............................8
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN.........9
5. PUMPING DOWN......................................................................12
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.
nDo 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.
nPerform 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.
nWhen installing the unit, use appropriate protective equipment and tools
for safety.
Failuretodosocouldcauseinjury.
nInstall 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electrician,
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insu󰀩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o󰀨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 explo-
sion.
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insula-
tion, 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.
nWhen 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.
nAttach 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.
nWhen installing, relocating, or servicing the unit, make sure that no sub-
stanceotherthanthespeciedrefrigerant(R32)enterstherefrigerantcircuit.
Any presence of foreign substance such as air can cause abnormal pressure
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.
nDo not discharge the refrigerant into the atmosphere. If refrigerant leaks
during installation, ventilate the room. Check that the refrigerant does not
leak after installation has been completed.
Ifrefrigerantleaksandcomesincontactwithreorheatingpartofsuchafan
heater, kerosene heater, or cooking stove, it will create harmful gas. Provide
ventilation in accordance with EN378-1.
nCheck 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.
nUse appropriate tools and piping materials for installation.
The pressure of R32 is 1.6 times more than R22. Not using appropriate tools or
materialsandincompleteinstallationcouldcausethepipestoburstorinjury.
nWhen pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running and the
stopvalveisopen, aircould bedrawninandthepressureintherefrigerationcycle
couldbecomeabnormallyhigh.Thiscouldcausethepipestoburstorinjury.
nWhen installing the unit, securely connect the refrigerant pipes before start-
ing 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.
nThe unit shall be installed in accordance with national wiring regulations.
nEarth the unit correctly.
Do not connect the earth to a gas pipe, water pipe, lightning rod or telephone
earth. Defective earthing could cause electric shock.
nBe sure to install an earth leakage breaker.
Failuretoinstallanearthleakagebreakermayresultinelectricshockorre.
n Whenusingagasburnerorotherame-producingequipment,completely
remove all of the refrigerant from the air conditioner and ensure that the
area is well-ventilated.
Iftherefrigerantleaksandcomesincontactinreorheatingpart,itwillcreate
harmfulgasandthereisriskofre.
nDo not use means to accelerate the defrosting process or to clean, other
than those recommended by the manufacturer.
nThe appliance shall be stored in a room without continuously operating
ignitionsources(forexample:openames,anoperatinggasapplianceor
an operating electric heater).
nDo not pierce or burn.
nBe aware that refrigerants may not contain an odour.
nPipe-work shall be protected from physical damage.
nThe installation of pipe-work shall be kept to a minimum.
nCompliance with national gas regulations shall be observed.
nKeep any required ventilation openings clear of obstruction.
nDo not use low temperature solder alloy in case of brazing the refrigerant
pipes.
nServicing shall be performed only as recommended by the manufacturer.
n Donotaltertheunit.Itmaycausere,electricshock,injuryorwaterleakage.
nWhen opening or closing the valve below freezing temperatures, refrigerant
may spurt out from the gap between the valve stem and the valve body,
resultingininjuries.
WARNING (Couldleadtodeath,seriousinjury,etc.)
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
(Riskofre)
Thisunitusesaammablerefrigerant.
Ifrefrigerantleaksandcomesincontactwithreorheatingpart,itwillcreateharmfulgasandthereisriskofre.
Read the OPERATING INSTRUCTIONS carefully before operation.
Service personnel are required to carefully read the OPERATING INSTRUCTIONS and INSTALLATION MANUAL before operation.
Further information is available in the OPERATING INSTRUCTIONS, INSTALLATION MANUAL, and the like.
Phillips screwdriver
Level
Scale
Utility knife or scissors
Torque wrench
Wrench(orspanner)
4 mm hexagonal wrench
Flare tool for R32, R410A
Gauge manifold for R32, R410A
Vacuum pump for R32, R410A
Charge hose for R32, R410A
Pipe cutter with reamer
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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 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a󰀨ecteddevice.
• Install the unit horizontally.
• Pleaseinstallitinanareanota󰀨ectedbysnowfallorblowingsnow.Inareas
withheavysnow,pleaseinstallacanopy,apedestaland/orsomeba󰀪eboards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce vibration
transmitted from there.
1-3.SELECTINGOPTIONALDIFFERENT-DIAMETERJOINTS
Ifthediameterofconnectionpipedoesnotmatchtheportsizeofoutdoorunit,useoptionaldi󰀨erent-diameterjointsaccordingtothefollowingtable.
Port size of outdoor unit Optionaldi󰀨erent-diameterjoints(portsizeofoutdoorunit→diameterofconnectionpipe)
MXZ-4F80VGD MXZ-5F100VGD Liquid / Gas 6.35(1/4)→9.52(3/8):PAC-493PI
9.52(3/8)→12.7(1/2):MAC-A454JP-E
9.52(3/8)→15.88(5/8):PAC-SG76RJ-E
12.7(1/2)→9.52(3/8):MAC-A455JP-E
12.7(1/2)→15.88(5/8):MAC-A456JP-E
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 - D UNIT B - E UNIT 6.35(1/4)/9.52(3/8)
(Unit:mm(inch))
1-2.SPECIFICATIONS
Model
Power supply *1 Wirespecications*2 Pipelengthandheightdi󰀨erence*3,*4,*5,*6,*7,*8
Rated
Voltage Fre- quency Breaker capacity Power supply
Indoor / out-
door connect-
ing wire
Max. pipe length
per indoor unit / for
multi-system
Max. height
di󰀨erence
Max. no. of bends per
indoor unit / for multi
system
MXZ-4F80VGD 220 V 60 HZ
230 V 50 HZ 25 A 3-core
2.5 mm24-core
1.0 / 1.5 mm225 m / 70 m 15 m 25 / 70
25 m / 80 m 25 / 80
MXZ-5F100VGD
*1 Connect to the power switch which has a gap of 3 mm or more when open to
interruptthesourcepowerphase.(Whenthepowerswitchisshuto󰀨,itmust
interruptallphases.)
*2 Use wires in conformity with design 60245 IEC 57. Use the indoor/outdoor
connecting wire in conformity with the wire specications specied in the
installation manual of the indoor unit.
*3 Neverusepipeswiththicknesslessthanspecied.Thepressureresistance
willbeinsu󰀩cient.
*4 Use a copper pipe or a copper-alloy seamless pipe.
*5 Be careful not to crush or bend the pipe during pipe bending.
*6 Refrigerant pipe bending radius must be 100 mm or more.
*7 Insulationmaterial:Heatresistingfoamplastic0.045specicgravity
*8 Besuretousetheinsulationofspeciedthickness.Excessivethicknessmay
causeincorrectinstallationoftheindoorunitandinsu󰀩cientthicknessmay
cause dew drippage.
*9 Atleast2 indoorunits mustbe connectedwhenusing indoorunit withcapacity
lower than 25 class.
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ba󰀪eboard
on the air outlet side of the outdoor unit.
Avoid the following places for installation where air conditioner trouble is
liable to occur.
• Whereammablegascouldleak.
• Where there is much machine oil.
• Whereoilissplashedorwheretheareaislledwithoilysmoke(suchas
cooking areas and factories, in which the properties of plastic could be
changedanddamaged).
• 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
compounds, formaldehyde, etc., which may cause chemical cracking.
• The appliance shall be stored so as to prevent mechanical damage from
occurring.
CAUTION (Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
nInstall an earth leakage breaker depending on the installation place.
If an earth leakage breaker is not installed, it could cause electric shock.
nPerform 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, soak-
ing and damaging household goods.
n Donottouchtheairinletorthealuminumnsoftheoutdoorunit.
 Thiscouldcauseinjury.
nDo 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.
n Donotoperatetheairconditionerduringinteriorconstructionandnish-
ingwork,orwhilewaxingtheoor.
Before operating the air conditioner, ventilate the room well after such work is
performed. Otherwise, it may cause volatile elements to adhere inside the air
conditioner, resulting in water leakage or scattering of dew.
Model Maximum amount of
refrigerant charge
Factory-charged
refrigerant amount Connectable number of indoor units
MXZ-4F80VGD 2.4 kg 2.4 kg 1 ~ 4 *9
MXZ-5F100VGD 1 ~ 5 *9
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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
Aslong asspace indicatedin the
gureisprovided,itisallowedto
install the unit where obstacles
are behind and on the sides of
the unit. (No obstacle above
theunit)
FREE SPACE REQUIRED AROUND OUTDOOR UNIT
500 or more
200 or more
350 or more100 or more
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.
100 or more
500 or more
100 or more
Service space
350 or more
350 or more
6. Service space
Providespaceforserviceandmaintenanceasshowninthegure.
500 or more
100 or more
• 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thereisalackofairoworthereisapossibilityofbecomingshort
cycle, install an outlet guide and make sure there is enough space behind
of the unit.
• When installing two or more units, do not install the units in front or behind
each other.
100 or more
200 or more
350 or more
500 or more 500 or more
(Unit:mm)
5. Obstacles in front, behind and on side(s)
4. Obstacles in front and behind
The unit can be used by attach-
ing an optional outdoor blowing
guide(PAC-SH96SG-E)(but
bothsidesandtopareopen).
500 or more
100 or more
Blowingguide(PAC-SH96SG-E)
Height of the obstacle is 1200 or less
• R32isheavierthanair—aswellasotherrefrigerants—sotendstoaccumulateatthebase(inthevicinityoftheoor).IfR32accumulatesaroundbase,itmayreach
aammableconcentrationincaseroomissmall.Toavoidignition,maintainingasafeworkenvironmentisrequiredbyensuringappropriateventilation.Ifarefriger-
antleakisconrmedinaroomoranareawherethereisinsu󰀩cientventilation,refrainfromusingofamesuntiltheworkenvironmentcanbeimprovedbyensuring
appropriate ventilation.
• Refrigerant pipes connection shall be accessible for maintenance purposes.
• Installoutdoorunitsinaplacewhereatleastoneofthefoursidesisopen,andinasu󰀩cientlylargespacewithoutdepressions.
OK OK OK NG
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4
1-4-1. Minimum installation area for Outdoor units
Ifyouunavoidablyinstallaunitinaspacewhereallfoursidesareblockedortherearedepressions,conrmthatoneofthesesituations(A,BorC)issatised.
Note:Thesecountermeasuresareforkeepingsafetynotforspecicationguarantee.
A)Securesu󰀩cientinstallationspace(minimuminstallationareaAmin).
 InstallinaspacewithaninstallationareaofAminormore,correspondingtorefrigerantquantityM(factory-chargedrefrigerant+locallyaddedrefrigerant).
C)Createanappropriateventilationopenarea.
Make sure that the width of the open area is 0.9 [m] or more and the height of the open area is 0.15 [m] or more.
However, the height from the bottom of the installation space to the bottom edge of the open area should be 0.125 [m] or less.
Open area should be 75% or more opening.
B)Installinaspacewithadepressionheightof[0.125 [m].
M [kg] Amin [m²]
1.0 12
1.5 17
2.0 23
2.5 28
3.0 34
3.5 39
4.0 45
4.5 50
5.0 56
5.5 62
6.0 67
6.5 73
7.0 78
7.5 84
Amin
Height from the bottom of
0.125 [m] or less Height from the bottom of 0.125 [m] or less
75% or more opening
Width W 0.9 [m] or more
Height from the bottom
0.125 [m] or less
Height H 0.15 [m] or more
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5
M [kg] Amin [m²]
1.0 3
1.5 4.5
2.0 6
2.5 7.5
3.0 9
3.5 12
4.0 15.5
4.5 20
5.0 24
5.5 29
6.0 35
6.5 41
7.0 47
7.5 54 Wall mounted
h0 ] 1.8 [m]
Ceiling concealedCassetteCeiling suspended
h0 ] 2.2 [m]h0 ] 2.2 [m]h0 ] 2.2 [m]
1-4-2.MinimuminstallationareaforIndoorunits
InstallinaroomwithaoorareaofAminormore,correspondingtorefrigerantquantityM(factory-chargedrefrigerant+locallyaddedrefrigerant).
Installtheindoorunitsothattheheightfromtheoortothebottomoftheindoorunitish0;
forwallmounted:1.8mormore;
forceilingsuspended,cassetteandceilingconcealed:2.2mormore.
Wheninstallingoorstanding,refertoindoorunitInstallationmanual.
There are restrictions in installation height for each model, so read the installation manual for the particular unit.
For wall mounted, ceiling suspended, cassette and concealed
Only for MFXZ
M [kg] Amin [m²]
1.00
No requirements
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.84 3.63
1.90 3.75
2.00 3.95
2.10 4.15
2.20 4.34
2.30 4.54
2.40 4.74
h0:Refertoindoorunitinstallationmanual.
Floor standing
Foroorstanding(MFXZ)
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6
*2
1-5. INSTALLATION DIAGRAM
Units should be installed by licensed contractor according to local code requirements.
ACCESSORIES
Check the following parts before installation.
(1) Drain socket 1
(2) Drain cap 5
PARTS TO BE PROVIDED AT YOUR SITE
(A) Power supply cord* 1
(B)
Indoor/outdoor unit connecting wire * 1
(C) Extension pipe 1
(D) Wall hole cover 1
(E) Piping tape 1
(F) Extension drain hose (or soft PVC hose, 15 mm inner diam-
eterorhardPVCpipeVP16) 1
(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
(L) Soft PVC hose, 15 mm inner diameter or hard PVC pipe VP16 for drain
socket(1) 1
Note:
* Placeindoor/outdoorunitconnectingwire(B)andpower
supplycord(A)atleast1mawayfromtheTVantenna
wire.
The“Q’ty”for(B)to(K)intheabovetableisquantitytobe
used per indoor unit.
More than
100 mm
Open as a rule
More than 500 mm if
the front and both sides
are open
More than 100 mm
More than 200 mm if there are
obstacles to both sides
Open as a rule
More than 500 mm if the back,
both sides and top are open More than 350 mm
Outdoor unit installation
Air inlet
Air outlet
Air inlet
950 mm
600 mm
175
mm
2-U-shape notched holes
(BaseboltM10)
330 mm
2 - 12 mm × 36 mm
ovalholes(BaseboltM10)
370 mm 417 mm
1-6. DRAIN PIPING FOR OUTDOOR UNIT
1) Performthedrainpipingworkonlywhendrainingfromoneplace.
2) Providedrainpipingbeforeindoorandoutdoorpipingconnection.
3) Attachthedrainsockettooneoftheseveraldrainholes.
Fix the drain socket into the drain hole of the base using the catches to secure it in place.
4) ConnectthesoftPVChoseI.D.15mmasshownintheillustration.
5) Makesuretoprovidedrainpipingwithadownhillgradeforeasydrainow.
6) Gluethedraincapstoclosealltheotherunnecessaryholeswiththeglue(Prepareinthe
eld).
Note:
Applythegluesecurely,astheglue(Prepareintheeld)willworkassealtopreventwater
from leaking.
Use the adhesive for the rubber and metal.
Attention
Theoutdoor unitis providedwith severalholesfordrainageat thebottom tomake drainageeasier.
Thedrainsocket isused toclosethe unnecessaryholesand centralizethe drainagewhenusing
the drain tube at the installation place.
Do not to use the drain socket in cold region. The drain tube can be frozen.
(1)Drainsocket
(2)Draincap
(L)SoftPVChose
WARNING
Toavoidriskofre,embedorprotecttherefrigerantpiping.
Externaldamageontherefrigerantpipingcanbecauseofre.
Whenthe piping isto be attachedto
awallcontainingmetals(tinplated)
or metal netting, use a chemically
treated wooden piece 20 mm or
thickerbetweenthewalland the pip-
ing 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.
After the leak test, apply insulat-
ing material tightly so that there
is no gap.
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7
2-1.INSTALLINGTHEUNIT
• 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.
• Removethetapeonthepanelwhenopeningthepackage.(DONOTremovetheLABELSonthepanel.)
Fix here with
M10 bolts.
Make the setting
depth deeper. Make width wider.
Anchor leg
30 or less
Anchor bolt length Anchor bolt pitch
(Unit:mm)
600
370
2. OUTDOORUNITINSTALLATION
2-2.CONNECTINGWIRESFOROUTDOORUNIT
1)Removetheservicepanelandthecablecover.
2)Passtheindoor/outdoorunitconnectingwire(B)andpowersupplycord
(A)throughthegrommet.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
externalforceisconveyedto theconnecting sectionof theterminal block.
3)Firmlytightentheterminalscrewstopreventthemfromloosening.After
tightening,pullthewireslightlytoconrmthattheydonotmove.
4)Perform2)and3)foreachindoorunit.
5)Connectpowersupplycord(A).
6)Fixindoor/outdoorunitconnectingwire(B)andpowersupplycord(A)
with the cable clamps. Route the cables or wires so as not to deform the
service panel. Otherwise, rainwater may enter the outdoor unit.
7)Closetheservicepanelandthecablecoversecurely.Makesurethat
3-2. PIPE CONNECTION 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.
5F100VGD
Terminal block
for power supply
Service panel Screws
Cable
cover
Cable clamp
MXZ-5F100VGD A→B→C→D→E→P→DR
MXZ-4F80VGD A→B→C→D→P→DR
DRDR DR DR
Power supply
Terminal block for
indoor/outdoor unit
Terminal block for DRED interface
Wire-to-wire connector
• Be sure to attach each screw to its correspondent
terminal when securing the cord and/or the wire to
the terminal block.
• Makeearthwirealittle longerthan others.(More than
35mm)
• Forfutureservicing, giveextralength tothe connect-
ing wires.
1 2 3 C
<OUTDOOR UNIT>
Indoor/outdoor unit
connecting wire
<INDOOR UNIT>
Terminal block
POWER SUPPLY
~/N 220 V 60 Hz
~/N 230 V 50 Hz
Terminal block Terminal block
Terminal block for
power supply
Terminal block
This unit has demand response capability which is compliant with AS/NZS 4755.3.1. To activate this function, you need to make a contract with remote
agentssuchaselectricsupplycompany,thenthisunitshouldbeconnectedtoDemandresponseenablingdevise(DRED).Forfurtherinformation,
consultyourdealer.Thisunitsupports3DemandResponseModes(DRMs):DRM1,DRM2andDRM3.
CAUTION
• To prevent malfunction caused by noise, route the cord connecting this unit to DRED and the
power supply cord as parallel as possible.
• Do not connect the demand control transmission cable to the terminal block for power supply.
• Do not pull, extremely bend or apply strong pressure on the wire to prevent failure.
• Do not screw DRED to outdoor unit.
• Do not put DRED in outdoor unit.
• Secure electrical wiring above clamp.
• Do not get DRED wire caught in the service panel.
1:DRM1
2:DRM2
3:DRM3
C:COMMON
AS/NZS4755
terminal block 35 mm 15 mm
Lead wire
Model INDOOR /
OUTDOOR UNIT
MXZ-5F100VGD A– E
MXZ-4F80VGD A– D
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Fig. 1 Fig. 2
Fig. 3 Fig. 4
Fig. 5 Fig. 6
3-3.PIPECONNECTION
• Theconnectedpipesizedi󰀨ersdependingthemodelsandthecapacitiesofindoorunits.
Tilted Uneven Burred
Good No good
Burr Copper pipe
Spare reamer
Pipe cutter
Smooth all
around
Even length
all around
Inside is shining
without any
scratches.
Flare nut
Die Copper pipe
Clutch type
Flaring tool
Wing nut type
1)Applyathincoatofrefrigerationoil(G)tothearedendsofthepipesandthepipeconnec-
tionsofthe outdoorunit. Donot applyrefrigerationoilonscrew threads.Excessive tightening
torque will result in damage on the screw.
2)Forconnection,rstalignthecenter,thentightentherst3to4turnsofarenut,byhand.
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refrigerantleakage.
• Be sure to wrap insulation around the piping. Direct contact with the bare piping may result
in burns or frostbite.
3-4.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 condensa-
tion.
Copper
pipe
WARNING
When installing the unit, securely con-
nect the refrigerant pipes before starting
the compressor.
CAUTION
When there are the ports which are not
used, make sure their nuts are tightened
securely.
3. FLARINGWORKANDPIPECONNECTION
3-1.PRECAUTIONSFORDEVICESTHATUSER32REFRIGERANT
• Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigerationoilappliedtothearedsections.
• UseC1220copperphosphorus,forcopperandcopperalloyseamlesspipes,toconnecttherefrigerantpipes.Userefrigerantpipeswiththethicknessesspecied
in the table to the below. Make sure the insides of the pipes are clean and do not contain any harmful contaminants such as sulfuric compounds, oxidants, debris,
or dust.
Always apply no-oxidation brazing when brazing the pipes, otherwise, the compressor will be damaged.
WARNING:
Wheninstallingorrelocating,orservicingtheairconditioner,useonlythespeciedrefrigerant(R32)tochargetherefrigerantlines.Donotmixitwithany
other refrigerant and do not allow air to remain in the lines.
Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhighpressureintherefrigerantline,andmayresultinanexplosionandother
hazards.
Theuseofanyrefrigerantotherthanthatspeciedforthesystemwillcausemechanicalfailureorsystemmalfunctionorunitbreakdown.Intheworstcase,
this could lead to a serious impediment to securing product safety.
Pipesize(mm) ø6.35 ø9.52 ø12.7 ø15.88 ø19.05 ø22.2 ø25.4 ø28.58
Thickness(mm) 0.8 0.8 0.8 1.0 1.0 1.0 1.0 1.0
• Donotusepipesthinnerthanthosespeciedabove.
• Use 1/2 H or H pipes if the diameter is 19.05 mm or larger.
• Besuretohaveappropriateventilationinordertopreventignition.Furthermore,besuretocarryoutrepreventionmeasuresthattherearenodangerousoram-
mableobjectsinthesurroundingarea.
*1Useajointpipeiftheconnectionoftheindoorunitdi󰀨ers.
• Usetighteningtorquetableaboveasaguidelineforindoorunitsideunionjointsection,and
tightenusingtwowrenches.Excessivetighteningdamagesthearesection.
3-2.FLARINGWORK
Pipe diameter
(mm) Nut (mm)
A(mm) Tightening torque
Clutch
type tool
for R32,
R410A
Clutch
type tool
for R22
Wing nut
type tool
for R22 N•m kgf•cm
ø6.35(1/4”) 17
0 to 0.5 1.0 to 1.5 1.5 to 2.0 13.7 to 17.7 140 to 180
ø9.52(3/8”) 22 34.3 to 41.2 350 to 420
ø12.7(1/2”) 26 2.0 to 2.5 49.0 to 56.4 500 to 575
ø15.88(5/8”) 29 73.5 to 78.4 750 to 800
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o󰀨thearedsectionanddoaringwork
again.
Indoor unit capacity 15 ~ 25 35 ~ 42 50 60 71
Indoorunit:
M series Liquid pipe size ø6.35 ø6.35 ø6.35 ø6.35 ø6.35
Gas pipe size ø9.52 ø9.52 ø9.52 *1 ø12.7 ø12.7
Indoorunit:
S series Liquid pipe size ø6.35 ø6.35 ø6.35 ø6.35 ø9.52
Gas pipe size ø9.52 ø9.52 ø12.7 ø15.88 ø15.88
Indoorunit:
P series Liquid pipe size - ø6.35 ø6.35 ø9.52 ø9.52
Gas pipe size - ø12.7 ø12.7 ø15.88 ø15.88
WARNING
Toavoidriskofre,areconnectionshouldbeinstalled
outdoors.Reusablemechanicalconnectorsandared
jointsarenotallowedindoors.
When connecting therefrigerant piping by brazing,rether
thanusingareconnections,completeallbrazingprior
to connecting indoor unit to outdoor unit.
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9
4-1. PURGING PROCEDURES AND LEAK TEST
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).
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.
9)Tightencapofserviceporttoobtaintheinitialstatus.
10 )Leaktest
Stop valve
for GAS
Gauge manifold
valve
(for R32,
R410A)
Compound pressure
gauge(forR32,R410A)
–0.101MPa
(–760mmHg)
Handle Low Handle High
Vacuum pump
(forR32,R410A)
Charge hose (for
R32,R410A)
*Close
*Open
Hexagonal
wrench
*4 to 5 turns
Stop valve
for LIQUID
Pressure gauge
(forR32,R410A)
Precautions when using
the control valve When attaching the control valve
to the service port, valve core may
deform or loosen if excess pressure
is applied. This may cause gas leak.
Service port
Charge hose
(for R32,
R410A)
Body Close Open
Control valve
AWhen attaching the control valve to
the service port, make sure that the
valve core is in closed position, and
then tighten partA. Do not tighten part
A or turn the body when valve core is
in open position.
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
Service port cap
(Torque 13.7 to
17.7 N•m, 140 to
180 kgf•cm)
Stop valve cap
(Torque 19.6 to
29.4 N•m, 200 to
300kgf•cm)
Make sure to replace the cap after
the operation.
<R32>
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condi-
tioner for cooling.
Note:
Incaseofaddingrefrigerant,complywiththequantityspeciedfortherefrig-
erating cycle.
CAUTION:
When charging the refrigerant system with additional refrigerant, be sure to use
liquid refrigerant. 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)duringcoldseason.Butneverusenakedreorsteam.
Union
Stop valve
Liquid
pipe
Indoor
unit
Stop valve with
service port Gas
pipe
Refrigerant gas
cylinder
operating valve
(forR32,R410A) Gauge manifold
valve (for R32,
R410A) Charge hose (for
R32,R410A)
Refrigerant gas cylinder for R32, R410A with
siphon
Electronic scale for refrigerant charging
Refrigerant(liquid)
Outdoor
unit
Union
Union
Union
Model Indoor unit
MXZ-5F100VGD A– E
MXZ-4F80VGD A– D
WARNING
When opening or closing the valve
below freezing temperatures,
refrigerant may spurt out from the
gap between the valve stem and the
valvebody,resultingininjuries.
Cap
Valve stem
Valve body
WARNING
Toavoidriskofre,makesurethattherearenoammablehazardsor
ignition risks before opening the stop valves.
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10
4-4. LOWERING THE OPERATION NOISE OF THE OUTDOOR UNIT
• Descriptionofthefunction:
With this function, the operating noise of the outdoor unit can be lowered by reducing the operation load, for example, during nighttime in COOL mode. However,
please note that the cooling and heating capacity may lower if this function is activated.
* Changing the setting is required to activate this function. Please explain about this function to your customers and ask them whether they want to use it.
SW1
ON
1 2 3 4 5 6
Lower the operating noise
[How to lower the operating noise]
1)Besuretoturno󰀨themainpowerfortheairconditionerbeforemakingthe
setting.
2)Setthe“5”ofSW1ontheoutdoorcontrollerboardtoONtoenablethisfunc-
tion.
3)Turnonthemainpowerfortheairconditioner.
4-3.LOCKINGTHEOPERATIONMODEOFTHEAIRCONDITIONER(COOL,DRY,HEAT)
COOL/DRY HEAT
• Descriptionofthefunction:
With this function, once the operation mode is locked to either COOL/DRY
mode or HEAT mode, the air conditioner operates in that mode only.
* Changingthesetting isrequired to activatethis function.Pleaseexplain about
this function to your customers and ask them whether they want to use it.
[How to lock the operation mode]
1)Besuretoturno󰀨themainpowerfortheairconditionerbeforemakingthe
setting.
2)Setthe“3”ofSW1ontheoutdoorcontrollerboardtoONtoenablethisfunc-
tion.
3)TolocktheoperationmodeinCOOL/DRYmode,setthe“4”ofSW1onthe
outdoor controller board to OFF. To lock the operation in HEAT mode, set the
same switch to ON.
4)Turnonthemainpowerfortheairconditioner.
SW1
ON
1 2 3 4 5 6
SW1
ON
1 2 3 4 5 6
LED
SW1
SW871
SW2
4-5. HOW TO SET LOW STANDBY POWER MODE
Use of the low standby power mode is recommended when none of the indoor
units listed in Table 1 is connected to the outdoor unit. The low standby power
modecanbesetwiththedipswitch(SW1)andthejumperconnector(SC751).
• Beforeturningonthebreakeratrsttime,settingsfordipswitch(SW1)and
jumperconnector(SC751)arenecessaryontheoutdoorcontrolP.C.board.
• It is recommended to activate the low standby power mode when none of the
indoor units listed in Table 1 is connected.
Note:
• Units come with low standby power mode deactivated as factory setting.
• When connecting one or more indoor units listed in Table 1, the outdoor unit
does not work at “activated low standby power mode”.
• In the event that SC751 is missing, outdoor unit will not work.
• Activate the P.C. board setting by turning ON the breaker.
Toactivatelowstandbypowermode:
Connect SC751 to CN750.
Set the 2 of SW1 to ON.
Todeactivatelowstandbypowermode:
Connect SC751 to CN751.
Set the 2 of SW1 to OFF.
SC751 SW1 MODE
CN750 Activated
CN751 Factory setting
Deactivated
ON
1 2 3 4 5 6
SW1
ON
1 2 3 4 5 6
SW2
CN750
CN751
SW871
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
SC751
Table1:Listofthetargetmodels
Type Model name
1way-cassette MLZ-KP**VF
4way-cassette SLZ-M**FA
Ceiling-Concealed PEAD-M**JAA(D)
SEZ-M**DA(L)
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11
4-6. 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combinationisdi󰀩cult,usethisfunctiontodetectandcorrectthecombinationbyfollowingtheprocedures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 detection, the indoor unit automatically stops operation. This is not a mal-
function.
Procedure
Pressthepiping/wiringcorrectionswitch(SW871)1minuteormoreafterturning
on the power supply.
• Correction completes in 10 to 20 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 is “Not completed”, 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 before operating this function.
• This function does not operate when the outside temperature is 0°C or below.
LEDindicationduringdetection:
LED1
(Red) LED2 (Yellow) LED3 (Green)
Lit Lit Once
Result of piping/wiring correction function
LED1
(Red) LED2 (Yellow) LED3 (Green) Result
Lit Not lit Lit Completed (Problem corrected or
normal)
Once Once Once Not completed
(Detectionfailed)
Other indications
Refer to “SAFETY PRE-
CAUTIONS WHEN LED
BLINKS” located behind
the service panel.
4-7. 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.
• To feel cool / warm wind, use lower fan speed or reduce the number of indoor units in operation.
When many indoor units are being operated at the same time, capacity of each indoor unit may drop as shown in the graph below.
100%150%
100%
67%
Ratio of total indoor units capacity to outdoor unit capacity
Capacity of each indoor unit
Operation when the total capacity of the operating indoor units is more than the capacity of the outdoor unit.
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12
When relocating or disposing of the air conditioner, pump down the system following the procedure below so that no refrigerant is released into the atmosphere.
1)Turno󰀨thebreaker.
2)Connectthegaugemanifoldvalvetotheserviceportofthestopvalveonthegaspipesideoftheoutdoorunit.
3)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.
4)Turnonthebreaker.
5)StarttheemergencyCOOLoperationonalltheindoorunits.
6)Whenthepressuregaugeshows0–0.05MPa[Gauge](approx.0–0.5kgf/cm2),fullyclosethestopvalveonthegaspipesideoftheoutdoorunitandstopthe
operation.(Refertotheindoorunitinstallationmanualaboutthemethodforstoppingtheoperation.)
* If too much refrigerant has been added to the air conditioner system, the pressure may not drop to 0 – 0.05 MPa [Gauge] (approx. 0 – 0.5 kgf/cm2),ortheprotec-
tion function may operate due to the pressure increase in the high-pressure refrigerant circuit. If this occurs, use a refrigerant collecting device to collect all of the
refrigerant in the system, and then recharge the system with the correct amount of refrigerant after the indoor and outdoor units have been relocated.
7)Turno󰀨thebreaker.Removethepressuregaugeandtherefrigerantpiping.
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
Thecompressormayburstandcauseinjuryifanyforeignsubstance,suchasair,entersthepipes.
WARNING
5. PUMPING DOWN
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WG79A820H01
HEADOFFICE:TOKYOBUILDING,2-7-3,MARUNOUCHI,CHIYODA-KU,TOKYO100-8310,JAPAN
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