Mitsubishi Electric PUZ-ZM35VKA User manual

SERVICE MANUAL R32
PARTS CATALOG (OCB653)
CONTENTS
1. REFERENCE MANUAL·································2
2. SAFETY PRECAUTION·································2
3. FEATURES···················································12
4. SPECIFICATIONS········································13
5. DATA·····························································14
6. OUTLINES AND DIMENSIONS···················17
7. WIRING DIAGRAM ······································19
8. WIRING SPECIFICATIONS··························21
9. REFRIGERANT SYSTEM DIAGRAM ·············26
10. TROUBLESHOOTING··································28
11. FUNCTION SETTING ···································83
12. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ····91
13. EASY MAINTENANCE FUNCTION···········100
14. DISASSEMBLY PROCEDURE···················102
PUZ-ZM35VKA
PUZ-ZM50VKA
Note:
•Thismanualdescribesservice
dataoftheoutdoorunitsonly.
No. OCH653
April 2017
SPLIT-TYPE,HEATPUMPAIRCONDITIONERS
Outdoor unit
[Model Name] [Service Ref.]
PUZ-ZM35VKA PUZ-ZM35VKA
PUZ-ZM50VKA PUZ-ZM50VKA
PUZ-ZM60VHA PUZ-ZM60VHA
PUZ-ZM71VHA PUZ-ZM71VHA

2
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
INDOOR UNIT SERVICE MANUAL
2SAFETY PRECAUTION
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R32
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off
the power-supply beaker.
• Discharge the condenser before the work involving the
electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts
with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be
done without turning off the power, exercise great caution
not to touch the live parts.
Use new refrigerant pipes.
In case of using the existing pipes for R22, be careful with
the following.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
1REFERENCE MANUAL
ModelName ServiceRef. Service
ManualNo.
PLA-ZM35/50/60/71EA PLA-ZM35/50/60/71EA.UK OCH650
OCB650
PKA-M60/71KA
PKA-M60/71KAL
PKA-M60/71KA.TH
PKA-M60/71KAL.TH
OCH661
OCB661
PKA-M35/50HA
PKA-M35/50HAL
PKA-M35/50HA
PKA-M35/50HAL
OCH660
OCB660
PCA-M35/50/60/71KA PCA-M35/50/60/71KA OCH659
OCB659
PEAD-M35/50/60/71JA
PEAD-M35/50/60/71JAL
PEAD-M35/50/60/71JA.UK
PEAD-M35/50/60/71JAL.UK ―
MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT
WARNING This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.
Read the OPERATION MANUAL carefully before operation.
Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.
Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
OCH653

3
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contaminants
such as sulfur, oxides, dirt, shaving particles, etc,
which are hazard to refrigerant cycle.
In addition, use pipes with specified thickness.
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil, etc.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil, etc.
Do not use refrigerant other than R32.
If other refrigerant (R22, etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil, etc.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Use the following tools specifically designed for
use with R32 refrigerant.
The following tools are necessary to use R32 refrigerant.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R32
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Use the specified refrigerant only.
OCH653

4
[1] Warning for service
(1) Do not alter the unit.
(2) For installation and relocation work, follow the instructions in the Installation Manual and use tools and pipe
components specifically made for use with refrigerant specified in the outdoor unit installation manual.
(3) Ask a dealer or an authorized technician to install, relocate and repair the unit.
For appliances not accessible to the general public.
(4) Refrigerant pipes connection shall be accessible for maintenance purposes.
(5)
If the air conditioner is installed in a small room or closed room, measures must be taken to prevent the refrigerant
concentration in the room from exceeding the safety limit in the event of refrigerant leakage. Should the refrigerant
leak and cause the concentration limit to be exceeded, hazards due to lack of oxygen in the room may result.
(6) Keep gas-burning appliances, electric heaters, and other fire sources (ignition sources) away from the location
where installation, repair, and other air conditioner work will be performed.
If refrigerant comes into contact with a flame, poisonous gases will be released.
(7) When installing or relocating, or servicing the air conditioner, use only the specified 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.
(8) After installation has been completed, check for refrigerant leaks. If refrigerant leaks into the room and comes
into contact with the flame of a heater or portable cooking range, poisonous gases will be released.
(9) Do not use low temperature solder alloy in case of brazing the refrigerant pipes.
(10) When performing brazing work, be sure to ventilate the room sufficiently. Make sure that there are no hazardous
or flammable materials nearby.
When performing the work in a closed room, small room, or similar location, make sure that there are no refriger-
ant leaks before performing the work.
If refrigerant leaks and accumulates, it may ignite or poisonous gases may be released.
(11) Do not install the unit in places where refrigerant may build-up or places with poor ventilation such as a semi-base-
ment or a sunken place in outdoor: Refrigerant is heavier than air, and inclined to fall away from the leak source.
(12) Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manu-
facturer.
(13) The appliance shall be stored in a room without continuously operating ignition sources (for example: open
flames, an operating gas appliance or an operating electric heater).
(14) Do not pierce or burn.
(15) Be aware that refrigerants may not contain an odour.
(16) Pipe-work shall be protected from physical damage.
(17) The installation of pipe-work shall be kept to a minimum.
(18) Compliance with national gas regulations shall be observed.
(19) Keep any required ventilation openings clear of obstruction.
(20) Servicing shall be performed only as recommended by the manufacturer.
(21) The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as
specified for operation.
(22) Maintenance, service and repair operations shall be performed by authorized technician with required qualification.
(23) Be sure to have appropriate ventilation in order to prevent ignition. Furthermore, be sure to carry out fire preven-
tion measures that there are no dangerous or flammable objects in the surrounding area.
[2] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[3] Additional refrigerant charge
When charging directly from cylinder
R32isasinglerefrigerantanditscompositiondoesnotchange.Therefore,bothliquidchargingandgaschargingare
possible.Liquidchargingofrefrigerantallatoncefromthelow-pressuresidemaycausethecompressormalfunction.
Accordingly,makesurethatchargingisgradual.
< Cylinder without a siphon tube >< Cylinder with a siphon tube >
Charging liquid refrigerant
Cylinder
Cylinder
Liquid
Valve
Liquid
Valve
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[4] Cautions for unit using R32 refrigerant
Basic work procedures are the same as those for conventional units using refrigerant R410A. However, pay careful
attention to the following points.
(1)Informationonservicing
(1-1)ChecksontheArea
Priortobeginningworkonsystemscontainingflammablerefrigerants,safetychecksarenecessarytoensurethatthe
riskofignitionisminimized.
Forrepairtotherefrigeratingsystems,(1-3)to(1-7)shallbecompletedpriortoconductingworkonthesystems.
(1-2)WorkProcedure
Workshallbeundertakenunderacontrolledproceduresoastominimizetheriskofaflammablegasorvaporbeing
presentwhiletheworkisbeingperformed.
(1-3)GeneralWorkArea
Allmaintenancestaffandothersworkinginthelocalareashallbeinstructedonthenatureofworkbeingcarriedout.
Workinconfinedspacesshallbeavoided.Theareaaroundtheworkspaceshallbesectionedoff.Ensurethatthecon-
ditionswithintheareahavebeenmadesafebycontrolofflammablematerial.
(1-4)CheckingforPresenceofRefrigerant
Theareashallbecheckedwithanappropriaterefrigerantdetectorpriortoandduringwork,toensurethetechnicianis
awareofpotentiallytoxicorflammableatmospheres.Ensurethattheleakdetectionequipmentbeingusedissuitable
forusewithallapplicablerefrigerants,i.e.non-sparking,adequatelysealedorintrinsicallysafe.
(1-5)PresenceofFireExtinguisher
Ifanyhotworkistobeconductedontherefrigerationequipmentoranyassociatedparts,appropriatefireextinguishing
equipmentshallbeavailabletohand.
HaveadrypowderorCO2fireextinguisheradjacenttothechargingarea.
(1-6)NoIgnitionSources
Nopersoncarryingoutworkinrelationtoarefrigerationsystemwhichinvolvesexposinganypipeworkshalluseany
sourcesofignitioninsuchamannerthatitmayleadtotheriskoffireorexplosion.Allpossibleignitionsources,includ-
ingcigarettesmoking,shouldbekeptsufficientlyfarawayfromthesiteofinstallation,repairing,removinganddisposal,
duringwhichrefrigerantcanpossiblybereleasedtothesurroundingspace.Priortoworktakingplace,theareaaround
theequipmentistobesurveyedtomakesurethattherearenoflammablehazardsorignitionrisks.“NoSmoking”signs
shallbedisplayed.
(1-7)VentilatedArea
Ensurethattheareaisintheopenorthatitisadequatelyventilatedbeforebreakingintothesystemorconductingany
hotwork.Adegreeofventilationshallcontinueduringtheperiodthattheworkiscarriedout.Theventilationshould
safelydisperseanyreleasedrefrigerantandpreferablyexpelitexternallyintotheatmosphere.
(1-8)ChecksontheRefrigerationEquipment
Whereelectricalcomponentsarebeingchanged,theyshallbefitforthepurposeandtothecorrectspecification.Atall
timesthemanufacturer’smaintenanceandserviceguidelinesshallbefollowed.Ifindoubt,consultthemanufacturer’s
technicaldepartmentforassistance.
Thefollowingchecksshallbeappliedtoinstallationsusingflammablerefrigerants:
• Thechargesizeisinaccordancewiththeroomsizewithinwhichtherefrigerantcontainingpartsareinstalled.
• Theventilationmachineryandoutletsareoperatingadequatelyandarenotobstructed.
• Markingtotheequipmentcontinuestobevisibleandlegible.Markingsandsignsthatareillegibleshallbecorrected.
• Refrigerationpipeorcomponentsareinstalledinapositionwheretheyareunlikelytobeexposedtoanysubstance
whichmaycorroderefrigerantcontainingcomponents,unlessthecomponentsareconstructedofmaterialswhichare
inherentlyresistanttobeingcorrodedoraresuitablyprotectedagainstbeingcorroded.
(1-9)ChecksonElectricalDevices
Repairandmaintenancetoelectricalcomponentsshallincludeinitialsafetychecksandcomponentinspectionproce-
dures.Ifafaultexiststhatcouldcompromisesafety,thennoelectricalsupplyshallbeconnectedtothecircuituntilitis
satisfactorilydealtwith.Ifthefaultcannotbecorrectedimmediatelybutitisnecessarytocontinueoperation,anade-
quatetemporarysolutionshallbeused.Thisshallbereportedtotheowneroftheequipmentsoallpartiesareadvised.
Initialsafetychecksshallincludethat:
• capacitorsaredischarged:thisshallbedoneinasafemannertoavoidpossibilityofsparking;
• noliveelectricalcomponentsandwiringareexposedwhilecharging,recoveringorpurgingthesystem;
• thereiscontinuityofearthbonding
(2)RepairstoSealedComponents
(2-1)Duringrepairstosealedcomponents,allelectricalsuppliesshallbedisconnectedfromtheequipmentbeingworked
uponpriortoanyremovalofsealedcovers,etc.Ifitisabsolutelynecessarytohaveanelectricalsupplytoequipment
duringservicing,thenapermanentlyoperatingformofleakdetectionshallbelocatedatthemostcriticalpointtowarn
ofapotentiallyhazardoussituation.
(2-2)Particularattentionshallbepaidtothefollowingtoensurethatbyworkingonelectricalcomponents,thecasingisnot
alteredinsuchawaythatthelevelofprotectionisaffected.Thisshallincludedamagetocables,excessivenumberof
connections,terminalsnotmadetooriginalspecification,damagetoseals,incorrectfittingofglands,etc.
Ensurethattheapparatusismountedsecurely.
Ensurethatsealsorsealingmaterialshavenotdegradedtothepointthattheynolongerservethepurposeofprevent-
ingtheingressofflammableatmospheres.
Replacementpartsshallbeinaccordancewiththemanufacturer’sspecifications.
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(3)RepairtointrinsicallySafeComponents
Donotapplyanypermanentinductiveorcapacitanceloadstothecircuitwithoutensuringthatthiswillnotexceedthe
permissiblevoltageandcurrentpermittedfortheequipmentinuse.
Intrinsicallysafecomponentsaretheonlytypesthatcanbeworkedonwhileliveinthepresenceofaflammableatmos-
phere.Thetestapparatusshallbeatthecorrectrating.
Replacecomponentsonlywithpartsspecifiedbythemanufacturer.Otherpartsmayresultintheignitionofrefrigerantin
theatmospherefromaleak.
(4)Cabling
Checkthatcablingwillnotbesubjecttowear,corrosion,excessivepressure,vibration,sharpedgesoranyotheradverse
environmentaleffects.Thecheckshallalsotakeintoaccounttheeffectsofagingorcontinualvibrationfromsourcessuch
ascompressorsorfans.
(5)DetectionofFlammableRefrigerants
Undernocircumstancesshallpotentialsourcesofignitionbeusedinthesearchingforordetectionofrefrigerantleaks.
Ahalidetorch(oranyotherdetectorusinganakedflame)shallnotbeused.
(6)LeakDetectionMethods
Electronicleakdetectorsmaybeusedtodetectrefrigerantleaksbut,inthecaseofflammablerefrigerants,thesensitivity
maynotbeadequate,ormayneedre-calibration.(Detectionequipmentshallbecalibratedinarefrigerant-freearea.)
Ensurethatthedetectorisnotapotentialsourceofignitionandissuitablefortherefrigerantused.Leakdetectionequip-
mentshallbesetatapercentageoftheLFLoftherefrigerantandshallbecalibratedtotherefrigerantemployed,andthe
appropriatepercentageofgas(25%maximum)isconfirmed.
Leakdetectionfluidsaresuitableforusewithmostrefrigerantsbuttheuseofdetergentscontainingchlorineshallbe
avoidedasthechlorinemayreactwiththerefrigerantandcorrodethecopperpipe-work.
Ifaleakissuspected,allnakedflamesshallberemoved/extinguished.
Ifaleakageofrefrigerantisfoundwhichrequiresbrazing,alloftherefrigerantshallberecoveredfromthesystem,or
isolated(bymeansofshutoffvalves)inapartofthesystemremotefromtheleak.Forappliancescontainingflammable
refrigerants,oxygenfreenitrogen(OFN)shallthenbepurgedthroughthesystembothbeforeandduringthebrazingpro-
cess.
(7)RemovalandEvacuation
Whenbreakingintotherefrigerantcircuittomakerepairs–orforanyotherpurposeconventionalproceduresshallbe
used.However,forflammablerefrigerantsitisimportantthatbestpracticeisfollowedsinceflammabilityisaconsidera-
tion.Thefollowingprocedureshallbeadheredto:
•removerefrigerant
•purgethecircuitwithinertgas
•evacuate
•purgeagainwithinertgas
•openthecircuitbycuttingorbrazing.
Therefrigerantchargeshallberecoveredintothecorrectrecoverycylinders.Forappliancescontainingflammablerefrig-
erants,thesystemshallbe“flushed”withOFNtorendertheunitsafe.Thisprocessmayneedtoberepeatedseveral
times.
Compressedairoroxygenshallnotbeusedforpurgingrefrigerantsystems.
Forappliancescontainingflammablerefrigerants,flushingshallbeachievedbybreakingthevacuuminthesystemwith
OFNandcontinuingtofilluntiltheworkingpressureisachieved,thenventingtoatmosphere,andfinallypullingdownto
avacuum.Thisprocessshallberepeateduntilnorefrigerantiswithinthesystem.WhenthefinalOFNchargeisused,
thesystemshallbeventeddowntoatmosphericpressuretoenableworktotakeplace.Thisoperationisabsolutelyvital
ifbrazingoperationsonthepipe-workaretotakeplace.
Ensurethattheoutletforthevacuumpumpisnotclosetoanyignitionsourcesandthatventilationisavailable.
(8)ChargingProcedures
Inadditiontoconventionalchargingprocedures,thefollowingrequirementsshallbefollowed:
• Ensurethatcontaminationofdifferentrefrigerantsdoesnotoccurwhenusingchargingequipment.Hosesorlines
shallbeasshortaspossibletominimizetheamountofrefrigerantcontainedinthem.
• Cylindersshallbekeptupright.
• Ensurethattherefrigerationsystemisearthedpriortochargingthesystemwithrefrigerant.
• Labelthesystemwhenchargingiscomplete(ifnotalready).
• Extremecareshallbetakennottooverfilltherefrigerationsystem.
Priortorechargingthesystem,itshallbepressure-testedwiththeappropriatepurginggas.Thesystemshallbeleak-
testedoncompletionofchargingbutpriortocommissioning.Afollowupleaktestshallbecarriedoutpriortoleavingthe
site.
(9)Decommissioning
Beforecarryingoutthisprocedure,itisessentialthatthetechnicianiscompletelyfamiliarwiththeequipmentandallits
detail.Itisrecommendedgoodpracticethatallrefrigerantsarerecoveredsafely.Priortothetaskbeingcarriedout,an
oilandrefrigerantsampleshallbetakenincaseanalysisisrequiredpriortore-useofreclaimedrefrigerant.Itisessential
thatelectricalpowerisavailablebeforethetaskiscommenced.
a)Becomefamiliarwiththeequipmentanditsoperation.
OCH653

7
b) Isolatesystemelectrically.
c) Beforeattemptingtheprocedure,ensurethat:
•mechanicalhandlingequipmentisavailable,ifrequired,forhandlingrefrigerantcylinders;
•allpersonalprotectiveequipmentisavailableandbeingusedcorrectly;
•therecoveryprocessissupervisedatalltimesbyacompetentperson;
•recoveryequipmentandcylindersconformtotheappropriatestandards.
d)Pumpdownrefrigerantsystem,ifpossible.
e)Ifavacuumisnotpossible,makeamanifoldsothatrefrigerantcanberemovedfromvariouspartsofthesystem.
f) Makesurethatcylinderissituatedonthescalesbeforerecoverytakesplace.
g)Starttherecoverymachineandoperateinaccordancewithmanufacturer’sinstructions.
h)Donotoverfillcylinders.(Nomorethan80%volumeliquidcharge).
i) Donotexceedthemaximumworkingpressureofthecylinder,eventemporarily.
j) Whenthecylindershavebeenfilledcorrectlyandtheprocesscompleted,makesurethatthecylindersandtheequip-
mentareremovedfromsitepromptlyandallisolationvalvesontheequipmentareclosedoff.
k) Recoveredrefrigerantshallnotbechargedintoanotherrefrigerationsystemunlessithasbeencleanedandchecked.
(10)Labelling
Equipmentshallbelabelledstatingthatithasbeende-commissionedandemptiedofrefrigerant.Thelabelshallbe
datedandsigned.Forappliancescontainingflammablerefrigerants,ensurethattherearelabelsontheequipmentstat-
ingtheequipmentcontainsflammablerefrigerant.
(11)Recovery
Whenremovingrefrigerantfromasystem,eitherforservicingordecommissioning,itisrecommendedgoodpractice
thatallrefrigerantsareremovedsafely.Whentransferringrefrigerantintocylinders,ensurethatonlyappropriaterefrig-
erantrecoverycylindersareemployed.Ensurethatthecorrectnumberofcylindersforholdingthetotalsystemcharge
areavailable.Allcylinderstobeusedaredesignatedfortherecoveredrefrigerantandlabelledforthatrefrigerant(i.e.
specialcylindersfortherecoveryofrefrigerant).Cylindersshallbecompletewithpressure-reliefvalveandassociated
shut-offvalvesingoodworkingorder.Emptyrecoverycylindersareevacuatedand,ifpossible,cooledbeforerecovery
occurs.
Therecoveryequipmentshallbeingoodworkingorderwithasetofinstructionsconcerningtheequipmentthatisat
handandshallbesuitablefortherecoveryofallappropriaterefrigerantsincluding,whenapplicable,flammablerefriger-
ants.Inaddition,asetofcalibratedweighingscalesshallbeavailableandingoodworkingorder.Hosesshallbecom-
pletewithleak-freedisconnectcouplingsandingoodcondition.Beforeusingtherecoverymachine,checkthatitisin
satisfactoryworkingorder,hasbeenproperlymaintainedandthatanyassociatedelectricalcomponentsaresealedto
preventignitionintheeventofarefrigerantrelease.Consultmanufacturerifindoubt.
Therecoveredrefrigerantshallbereturnedtotherefrigerantsupplierinthecorrectrecoverycylinder,andtherelevant
wastetransfernotearranged.Donotmixrefrigerantsinrecoveryunitsandespeciallynotincylinders.Ifcompressorsor
compressoroilsaretoberemoved,ensurethattheyhavebeenevacuatedtoanacceptableleveltomakecertainthat
flammablerefrigerantdoesnotremainwithinthelubricant.Theevacuationprocessshallbecarriedoutpriortoreturning
thecompressortothesuppliers.Onlyelectricheatingtothecompressorbodyshallbeemployedtoacceleratethispro-
cess.Whenoilisdrainedfromasystem,itshallbecarriedoutsafely.
OCH653

Performtheairtight test,vacuumair purging,
additionalrefrigerantcharging(ifnecessary),
andgasleakcheck.
Measuretheexistingpipethicknessand
checkfordamage.
The existing pipe thickness meets specica-
tions and the pipes are not damaged.
 Checkiftheexistingairconditionercanoperate.
Afteroperatingthecoolingsystemforabout30
minutes,doapumpdownwork.
Disconnecttheexistingairconditionerfromthe
pipes.
Attachthenewairconditioner
Testrun Theexistingpipescannotbereused.
Usenewpipes.
Note:
Iftheexistingairconditionercannotoperate,usea
refrigerantrecoverydevicetocollecttherefrigerant.
Note:
UsenewpipesforZM35–71models.
The existing pipe thickness does not meet
specications or the pipes are damaged.
8
2-3. PRECAUTIONS WHEN REUSING EXISTING R22/R410a REFRIGERANT PIPES
(1) Flowchart
[3] Service tools
Use the below service tools as exclusive tools for R32 refrigerant.
No. Toolname Specifications
1Gaugemanifold ·OnlyforR32
·Usetheexistingfittingspecifications.(UNF1/2)
·Usehigh-tensionsidepressureof5.3MPa·Gorover.
2Chargehose ·OnlyforR32
·Usepressureperformanceof5.09MPa·Gorover.
3Electronicscale —
4Gasleakdetector ·UsethedetectorforR134a,R407C,R410aorR32.
5Adaptorforreverseflowcheck ·Attachonvacuumpump.
6Refrigerantchargebase —
7Refrigerantcylinder ·OnlyforR32
·Cylinderwithsyphon
8Refrigerantrecoveryequipment —
•Refertotheowchartbelowtodetermineiftheexistingpipescanbeusedandifitisnecessarytousealterdryer.
•Ifthediameteroftheexistingpipesisdifferentfromthespecieddiameter,refertotechnologicaldatamaterialstoconrmif
thepipescanbeused.
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9
(2) Cautions for refrigerant piping work
NewrefrigerantR410Aisadoptedforreplacementinverterseries.AlthoughtherefrigerantpipingworkforR410Aissame
asforR22,exclusivetoolsarenecessarysoasnottomixwithdifferentkindofrefrigerant.Furthermoreastheworking
pressureofR410Ais1.6timeshigherthanthatofR22,theirsizesofflaredsectionsandflarenutsaredifferent.
1Thicknessofpipes
BecausetheworkingpressureofR410AishighercomparedtoR22,besuretouserefrigerantpipingwiththickness
shownbelow.(Neverusepipesof0.7mmorbelow.)
2Dimensionsofflarecuttingandflarenut
ThecomponentmoleculesinHFCrefrigerantaresmallercomparedtoconventionalrefrigerants.Inadditiontothat,
R410Aisarefrigerant,whichhashigherriskofleakagebecauseitsworkingpressureishigherthanthatofotherrefriger-
ants.Therefore,toenhanceairtightnessandstrength,flarecuttingdimensionofcopperpipeforR410Ahasbeenspeci-
fiedseparatelyfromthedimensionsforotherrefrigerantsasshownbelow.ThedimensionBofflarenutforR410Aalso
haspartlybeenchangedtoincreasestrengthasshownbelow.Setcopperpipecorrectlyreferringtocopperpipeflaring
dimensionsforR410Abelow.For1/2and5/8inchpipes,thedimensionBchanges.
Usetorquewrenchcorrespondingtoeachdimension.
3ToolsforR410A(Thefollowingtableshowswhetherconventionaltoolscanbeusedornot.)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
0.8
0.8
0.8
1.0
—
0.8
0.8
0.8
1.0
1.0
Nominal
dimensions(inch)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness (mm)
R32/R410a R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
9.1
13.2
16.6
19.7
—
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions(inch)
Flare cutting dimensions
Outside
diameter(mm) R32/R410a R22
Dimension A ( )
+0
-0.4 (mm)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
17.0
22.0
26.0
29.0 *
—
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions(inch)
Flare nut dimensions Outside
diameter(mm) Dimension B
R32/R410a
* 36.0mm for
indoor unit
of RP100,
125 and 140
R22
(mm)
DimensionA
DimensionB
Toolsandmaterials Use R410Atools CanR22toolsbeused? CanR407Ctoolsbeused? CanR410atoolsbeused?
Gaugemanifold Airpurge,refrigerant
chargeandoperation
check
ToolexclusiveforR410A
Chargehose ToolexclusiveforR410A
Gasleakdetector Gasleakcheck ToolforHFCrefrigerant
Refrigerantrecovery
equipment Refrigerantrecovery ToolexclusiveforR410A
Refrigerantcylinder Refrigerantcharge ToolexclusiveforR410A
Safetycharger Preventcompressormalfunction
whenchargingrefrigerantby
sprayingliquidrefrigerant
ToolexclusiveforR410A
Chargevalve Preventgasfromblowingout
whendetachingchargehose
ToolexclusiveforR410A
Vacuumpump
Vacuumdryingandair
purge
Toolsforotherrefrigerants
canbeusedifequipped
withadapterforreverse
owcheck
(Usableifequippedwith
adapterforreverse
ow)
(Usableifequippedwith
adapterforreverse
ow)
(Usableifequippedwith
adapterforreverse
ow)
Flaretool
Flaringworkofpiping
Toolsforotherrefrigerants
canbeusedbyadjusting
aringdimension
(Usablebyadjusting
aringdimension)
(Usablebyadjusting
aringdimension)
(Usablebyadjusting
aringdimension)
Bender Bendthepipes Toolsforotherrefrigerants
canbeused
Pipecutter Cutthepipes Toolsforotherrefrigerants
canbeused
Welderandnitrogen
gascylinder Weldthepipes Toolsforotherrefrigerants canbeused
Refrigerantcharging
scale Refrigerantcharge Toolsforotherrefrigerants canbeused
Vacuumgaugeor
thermistorvacuum
gaugeandvacuum
valve
Checkthedegreeofvacuum.
(Vacuumvalvepreventsback
owofoilandrefrigerantto
thermistorvacuumgauge)
Toolsforotherrefrigerants
canbeused
Chargingcylinder Refrigerantcharge ToolexclusiveforR410A –
 :Prepareanewtool.(UsethenewtoolasthetoolexclusiveforR410A.)
 :Toolsforotherrefrigerantscanbeusedundercertainconditions.
 :Toolsforotherrefrigerantscanbeused.
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10
2-4. Choosing the outdoor unit installation location
R32isheavierthanair—aswellasotherrefrigerants—
sotendstoaccumulateatthebase(inthevicinityofthe
floor).IfR32accumulatesaroundbase,itmayreacha
flammableconcentrationincaseroomissmall.Toavoid
ignition,maintainingasafeworkenvironmentisrequired
byensuringappropriateventilation.Ifarefrigerantleakis
confirmedinaroomoranareawherethereisinsufficient
ventilation,refrainfromusingofflamesuntilthework
environmentcanbeimprovedbyensuringappropriate
ventilation.
Installoutdoorunitsinaplacewhereatleastoneofthe
foursidesisopen,andinasufficientlylargespacewith-
outdepressions.
2-5. Minimum installation area
Ifyouunavoidablyinstallaunitinaspacewhereallfoursidesareblockedortherearedepressions,confirmthatoneof
thesesituations(A,BorC)issatisfied.
Note:Thesecountermeasuresareforkeepingsafetynotforspecificationguarantee.
A)Securesufficient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).
B)Installinaspacewithadepressionheightof[0.125[m]
OK OK
OK NG
Amin
Height from the bottom of
0.125 [m] or less Height from the bottom of 0.125 [m] or less
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
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11
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.
■Indoorunits
InstallinaroomwithafloorareaofAminormore,correspondingtorefrigerantquantityM(factory-chargedrefrig-
erant+locallyaddedrefrigerant).
*Forthefactory-chargedrefrigerantamount,refertothespecnameplateorinstallationmanual.
Fortheamounttobeaddedlocally,refertotheinstallationmanual.
Installtheindoorunitsothattheheightfromthefloor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.
*Therearerestrictionsininstallationheightforeachmodel,soreadtheinstallationmanualfortheparticularunit.
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
M [kg] Amin [m²]
1.0 4
1.5 6
2.0 8
2.5 10
3.0 12
3.5 14
4.0 16
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]
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3 FEATURES
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT
Maximum 30 m (PUZ-ZM35–71)
The refrigerant circuit with LEV (Linear Expansion Valve) and power receiver always control the optimal refrigerant level
regardlessofthelength(30mmaximumand5mminimum)ofpiping.Theadditionalrefrigerantchargingworkduringinstal-
lation often causes problems. It is completely eliminated by chargeless system. This unique system improves the quality
andreliabilityoftheworkdone.Italsohelpstospeeduptheinstallationtime.
PUZ-ZM35VKA
PUZ-ZM50VKA PUZ-ZM60VHA PUZ-ZM71VHA
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13
4 SPECIFICATIONS
A
kW
W
kW
K
/min (CFM )
dB
dB
mm (inch)
mm (inch)
mm (inch)
kg (lb)
kg (lb)
L
mm (inch)
mm (inch)
Power supply (phase, cycle, voltage)
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow
Defrost method
Sound pressure level
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Mode
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUZ-ZM35VKA PUZ-ZM50VKA
Cooling
13
SVB140FFSM
0.6
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
—
Plate fin coil
Propeller fan o1
0.046
45 (1,590)
Reverse cycle
44
46
809 (31-13/16)
300 (11-3/16)
630 (24-13/16)
R32
6.35 (1/4)
12.7 (1/2)
Flared
Flared
Maximum 30 m
Maximum 50 m
Heating Cooling
13
SVB140FFSM
0.9
Heating
HP switch
Comp.shell thermo
Single, 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
46 (101)
2.0 (4.4)
0.35 (FW68S) 0.35 (FW68S)
46 (101)
2.0 (4.4)
A
kW
W
kW
K
/min (CFM )
dB
dB
mm (inch)
mm (inch)
mm (inch)
kg (lb)
kg (lb)
L
mm (inch)
mm (inch)
Power supply (phase, cycle, voltage)
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow
Defrost method
Sound pressure level
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Mode
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUZ-ZM71VHA
PUZ-ZM60VHA Cooling
Propeller fan o1
0.06
55 (1,940)
47
49
943 (37-1/8)
70 (154)
2.8 (6.2)
Maximum 55 m
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
—
Plate fin coil
Reverse cycle
950 (37-3/8)
330+30 (13+1-3/16)
R32
9.52 (3/8)
15.88 (5/8)
Flared
Flared
Maximum 30 m
HeatingCooling Heating
HP switch
Comp.shell thermo
Single, 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
19
SVB172FFUM1
0.70 (FW68S)
1.1
0.70 (FW68S)
1.2
OCH653

14
5DATA
5-1. REFILLING REFRIGERANT CHARGE (R32: kg)
Additionalchargeisrequiredforpipeslonger
than30m.
Service Ref. Pipinglength(oneway) Initial
charged
10m 20m 30m 40m 50m 55m 75m
PUZ-ZM35VKA
PUZ-ZM50VKA 2.0 2.0 2.0 2.15 2.3 — — 2.0
PUZ-ZM60VHA
PUZ-ZM71VHA 2.8 2.8 2.8 3.2 3.6 3.6 —2.8
5-2. COMPRESSOR TECHNICAL DATA (at20:)
Service Ref. PUZ-ZM35VKA
PUZ-ZM50VKA PUZ-ZM60VHA PUZ-ZM71VHA
Compressor model SVB140FFSM SVB172FFUM1
Winding
Resistance
(")
U-V 1.45 1.16
U-W 1.45 1.16
W-V 1.45 1.16
OCH653

15
5-3. NOISE CRITERION CURVES
1.5 m
1 m
MICROPHONE
UNIT
GROUND
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUZ-ZM35VKA
PUZ-ZM50VKA
COOLING
MODE
HEATING
44
SPL(dB)
46
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PUZ-ZM 60VHA
PUZ-ZM 71VHA
COOLING
MODE
HEATING
47
SPL(dB)
49
LINE
OCH653

16
TotalElectrical circuitRefrigerant circuitIndoor side
Outdoor
side
Representative matching
SHF
BF
W
kW
Mode
Capacity
Input
PLA-ZM71EA
PLA-ZM71EA
Cooling
7,100
1.65
Heating
8,000
1.82
6.70
2.72
1.03
77
45
13
5
27
19
14.5
35
24
0.82
0.10
7.46
2.32
0.70
81
39
4
5
20
15
35.9
7
6
—
—
1 , 50
230
PUZ-ZM71VHA
1 , 50
230
Phase , Hz
Voltage
Current
Outdoor unit
Phase , Hz
Voltage
Current
Discharge pressure
Suction pressure
Discharge temperature
Condensing temperature
Suction temperature
Ref. pipe length
Intake air temperature
Discharge air temperature
Intake air temperature
V
A
V
A
MPaG
MPaG
°C
°C
°C
m
°C
°C
°C
°C
°C
Indoor unit
D.B.
W.B.
D.B.
D.B.
W.B.
PLA-ZM35EA PLA-ZM50EA PLA-ZM60EA
PLA-ZM35EA PLA-ZM50EA PLA-ZM60EA
Cooling
3,600
0.71
Heating
4,100
0.82
Cooling
5,000
1.11
Heating
6,000
1.36
Cooling
6,100
1.45
Heating
7,000
1.71
3.17
2.51
1.12
65
42
15
5
27
19
17.5
35
24
0.97
0.18
3.53
2.04
0.74
72
34
9
5
20
15
30.8
7
6
—
—
4.80
2.68
1.02
76
44
13
5
27
19
15.5
35
24
0.81
0.17
5.85
2.44
0.69
87
41
6
5
20
15
35.5
7
6
—
—
5.66
2.62
1.00
79
44
15
5
27
19
13.4
35
24
0.73
0.13
6.77
2.54
0.72
85
43
4
5
20
15
38.9
7
6
—
—
1 , 50
230
PUZ-ZM35VKA
1 , 50
230
1 , 50
230
PUZ-ZM50VKA
1 , 50
230
1 , 50
230
PUZ-ZM60VHA
1 , 50
230
0.21 0.19 0.22 0.20 0.22 0.20 0.34 0.32
5-4. STANDARD OPERATION DATA
The unit of pressure has been changed to MPaG based on international SI system.
The conversion factor is : 1(MPaG)=10.2(kgf/cm²)
OCH653

17
6OUTLINES AND DIMENSIONS
PUZ-ZM35VKA PUZ-ZM50VKA Unit: mm (inch)
{
42 drain hole
251.5
404.5
Side Air Intake
Handle for moving
63
809
310
320
8.5
630
22.3
Installation bolt pitch
Air discharge
Rear Air intake
Side Air intake
oval hole
2-10×21
2-U Shaped notched holes (Foundation Bolt M10)
(Foundation Bolt M10)
500154.5
40
330
300
360
32.5
Service port
FLARE {12.7 (1/2F)
Connection for gas pipe
Connection for
liquid pipe FLARE {6.35 (1/4F)
Service panel
for charge plug
Service panel
Earth terminal
Terminal connection
164.5
99.5
23.2
497.7
193.5
43°
35°
<Foundation bolt height>
FOUNDATION
Less than
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts, washers and nut must be purchased locally).
FOUNDATION BOLTS
Piping and wiring connection can be made from the rear direction only.
PIPING-WIRING DIRECTION
18mm
350mm or more
Basically open
100mm or more 100mm or more
500mm or more
2 sides should be open in
the right, left and rear side.
100mm or more as long as
no obstacle is placed on the rear and right-and-left sides
of the unit.
Free space around the outdoor unit (basic example)
Rear Air Intake
OCH653

18
PUZ-ZM60VHA PUZ-ZM71VHA Unit: mm (inch)
Drain hole
(5-{33)
Bottom piping hole (Knock-Out)
71
71
219
81
30 220 145 145 145
Earth terminal
FREE
OVER 10mm OVER 10mm
Earth terminal
Service panel
Terminal Connections
Handle for moving
1
2
Handle for moving
669
431
447
950
322
23
473
943
2-12×36 oval holes
(Foundation Bolt M10)
Installation Feet
Rear Air Intake
2-U Shaped notched holes
(Foundfation Bolt M10)
Air Discharge
61
417 19
330
25
175 600 175
57 41
370
28
53
40
Rear Air Intake
Handle for moving
Handle for moving
Air Intake
2
1
Example of Notes
{
15.88(5/8F)
{
9.52(3/8F)
Side Air Intake
Front piping cover
Rear piping cover
Front trunking hole (Knock-Out)
Front piping hole (Knock-Out)
45
65
92
40
6323 73 5527
{
92
Power supply wiring hole (2-
{
27Knock-Out)
Rear trunking hole (Knock-Out)
Rear piping hole (Knock-Out)
637323 5527
92
65
45 40
{
92
Power supply wiring hole (2-
{
27Knock-Out)
Right trunking hole (Knock-Out)
Right piping hole (Knock-Out)
Piping Knock-Out Hole Details
Power supply wiring hole (2-
{
27Knock-Out)
6373
75 40
92
922723
5519
{
92
Over 500mm Over 100mm
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts and washers must be purchased locally.)
<Foundation bolt height>
FOUNDATION
Less than
30
Dimensions of space needed
for service access are
shown in the below diagram.
Service space
Over 10
500
500
Over 100
The diagram below shows a basic example. Explantion of particular details are given in the installation manuals etc.
Side Air Intake
Over
Over
Piping and wiring connections
can be made from 4 directions:
FRONT,Right,Rear and Below.
4 PIPING-WIRING DIRECTIONS
3 FOUNDATION BOLTS
2 SERVICE SPACE
1 FREE SPACE (Around the unit)
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7WIRING DIAGRAM
PUZ-ZM35VKA PUZ-ZM50VKA
OCH653

20
PUZ-ZM60VHA PUZ-ZM71VHA
OCH653