Mitsubishi Electric City Multi PUMY-P250YBM User manual
For use with R410A
Air-Conditioners
PUMY-P250YBM
PUMY-P300YBM
FOR INSTALLER
INSTALLATION MANUAL
MONTAJ ELKİTABI
INSTALLATIONSMANUAL
INSTALLATIONSMANUAL
MANUAL DE INSTALAÇÃO
ΕΓΧΕΙΡΙΔΙΟ ΟΔΗΓΙΩΝ ΕΓΚΑΤΑΣΤΑΣΗΣ
MANUALE DI INSTALLAZIONE
MANUAL DE INSTALACIÓN
INSTALLATIEHANDLEIDING
MANUEL D’INSTALLATION
INSTALLATIONSHANDBUCH
РЪКОВОДСТВО ЗА МОНТАЖ
INSTRUKCJA MONTAŻU
INSTALLASJONSHÅNDBOK
ASENNUSOPAS
INSTALAČNÍ PŘÍRUČKA
NÁVOD NA INŠTALÁCIU
TELEPÍTÉSI KÉZIKÖNYV
NAMESTITVENI PRIROČNIK
MANUAL DE INSTALARE
PAIGALDUSJUHEND
MONTĀŽAS ROKASGRĀMATA
MONTAVIMO VADOVAS
PRIRUČNIK ZA POSTAVLJANJE
UPUTSTVO ZA UGRADNJU
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PER L’INSTALLATORE
VOOR DE INSTALLATEUR
PARA EL INSTALADOR
FÜR INSTALLATEURE
POUR L’INSTALLATEUR
FÖR INSTALLATÖREN
TIL INSTALLATØREN
PARA O INSTALADOR
ΓΙΑ ΑΥΤΟΝ ΠΟΥ ΚΑΝΕΙ ΤΗΝ ΕΓΚΑΤΑΣΤΑΣΗ
MONTÖR İÇİN
ЗА МОНТАЖНИКА
DLA INSTALATORA
FOR MONTØR
ASENTAJALLE
PRO MONTÁŽNÍ PRACOVNÍKY
PRE MONTÉRA
A TELEPÍTŐ RÉSZÉRE
ZA MONTERJA
PENTRU INSTALATOR
PAIGALDAJALE
UZSTĀDĪŠANAS SPECIĀLISTAM
SKIRTA MONTUOTOJUI
ZA INSTALATERA
ZA MONTERA
РУКОВОДСТВО ПО УСТАНОВКЕ
ПОСІБНИК З УСТАНОВЛЕННЯ
Русский
Українська
ДЛЯ УСТАНОВИТЕЛЯ
ДЛЯ СПЕЦІАЛІСТА З МОНТАЖУ
BT79A020W01_cover1.indd 1 2020/09/25 17:16:13
1
Contents
1. Safety precautions
► Beforeinstallingtheunit,makesureyoureadallthe“Safetyprecau-
tions”.
► Pleasereporttoortakeconsentbythesupplyauthoritybeforecon-
nectiontothesystem.
► EquipmentcomplyingwithIEC/EN61000-3-12
► Itisdesignedforuseintheresidential,commercialandlight-indus-
trialenvironment.
► PUMY-P250YBM,PUMY-P300YBM
“ThisequipmentcomplieswithIEC61000-3-12providedthatthe
short-circuitpowerSscisgreaterthanorequaltoSsc(*1)atthe
interfacepointbetweentheuser’ssupplyandthepublicsystem.Itis
theresponsibilityoftheinstalleroruseroftheequipmenttoensure,
byconsulationwiththedistributionnetworkoperatorifnecessary,
thattheequipmentisconnectedonlytoasupplywithashort-circuit
powerSscgreaterthanorequaltoSsc (*1)”
Ssc (*1)
Model Ssc (MVA)
PUMY-P250YBM 2.00
PUMY-P300YBM 2.28
Warning:
Describesprecautionsthatmustbeobservedtopreventdangerofinjuryor
deathtotheuser.
Caution:
Describesprecautionsthatmustbeobservedtopreventdamagetotheunit.
After installation work has been completed, explain the “Safety Precautions” use,
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
: Indicates a part which must be grounded.
Warning:
Carefullyreadthelabelsafxedtothemainunit.
Conrmationofpartsattached
In addition to this manual, the following part is supplied with the outdoor unit.
It is used for grounding the S terminal of transmission terminal block TB7.
For details refer to “6. Electrical work”. Grounding lead wire
1. Safety precautions................................................ 1
2. Installation location ............................................... 3
3. Installing the outdoor unit .......................................... 7
4. Installing the refrigerant piping ...................................... 8
5. Drainage piping work............................................. 18
6. Electrical work .................................................. 19
7. Test run ....................................................... 28
8. Special Functions ............................................... 29
Caution:
• DonotventR410Aintotheatmosphere.
For safe and correct use, read this manual and the indoor unit installation manual thoroughly before installing the air-conditioner unit.
Warning:
• Theunitmustnotbeinstalledbytheuser.Askadealeroranauthorized
techniciantoinstalltheunit.Iftheunitisinstalledincorrectly,waterleakage,
electricshock,orremayresult.
• Forinstallationwork,followtheinstructionsintheinstallationmanualand
usetoolsandpipecomponentsspecicallymadeforusewithR410Arefrig-
erant.
TheR410ArefrigerantintheHFCsystemispressurized1.6timesthepres-
sureofusualrefrigerants.IfpipecomponentsnotdesignedforR410Arefrig-
erantareusedandtheunitisnotinstalledcorrectly,thepipesmayburstand
causedamageorinjuries.Inaddition,waterleakage,electricshock,orre
mayresult.
• Wheninstallingtheunit,useappropriateprotectiveequipmentandtoolsfor
safety.Failuretodosocouldcauseinjuries.
• Theunitmustbeinstalledaccordingtotheinstructionsinordertominimize
theriskofdamagefromearthquakes,typhoons,orstrongwinds.Anincor-
rectlyinstalledunitmayfalldownandcausedamageorinjuries.
• Theunitmustbesecurelyinstalledonastructurethatcansustainitsweight.
Iftheunitismountedonanunstablestructure,itmayfalldownandcause
damageorinjuries.
• Iftheairconditionerisinstalledinasmallroom,measuresmustbetaken
to prevent the refrigerant concentration in the room from exceeding the
safetylimit in theeventofrefrigerantleakage. Consult a dealerregarding
theappropriatemeasurestopreventtheallowableconcentrationfrombeing
exceeded.
Shouldtherefrigerantleakandcausetheconcentrationlimittobeexceeded,
hazardsduetolackofoxygenintheroommayresult.
• Ventilatetheroomifrefrigerantleaksduringoperation.Ifrefrigerantcomes
intocontactwithaame,poisonousgaseswillbereleased.
• Allelectricworkmustbeperformedbyaqualiedtechnicianaccordingto
localregulationsandtheinstructionsgiveninthismanual.Theunitsmust
be powered by dedicated power lines and the correct voltage and circuit
breakersmustbeused.Powerlineswithinsufcientcapacityorincorrect
electricalworkmayresultinelectricshockorre.
• UseC1220copperphosphorus,forcopperandcopperalloyseamlesspipes,
toconnecttherefrigerantpipes.Ifthepipesarenotconnectedcorrectly,the
unitwillnotbeproperlygroundedandelectricshockmayresult.
• Useonlyspeciedcablesforwiring.Thewiringconnectionsmustbemade
securelywithnotensionappliedontheterminalconnections.Also,never
splicethecablesforwiring(unlessotherwiseindicatedinthisdocument).
Failuretoobservetheseinstructionsmayresultinoverheatingorare.
• Theterminalblockcoverpaneloftheoutdoorunitmustbermlyattached.If
thecoverpanelismountedincorrectlyanddustandmoistureentertheunit,
electricshockorremayresult.
• Theapplianceshallbeinstalledinaccordancewithnationalwiringregula-
tions.
• Ifthesupplycordisdamaged,itmustbereplacedbythemanufacturer,its
serviceagentorsimilarlyqualiedpersonsinordertoavoidahazard.
• Wheninstallingorrelocating,orservicingtheairconditioner,useonlythe
speciedrefrigerant(R410A)tocharge the refrigerant lines. Do not mix it
withanyotherrefrigerantanddonotallowairtoremaininthelines.
Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhighpres-
sureintherefrigerantline,andmayresultinanexplosionandotherhazards.
Theuseofanyrefrigerantotherthanthatspeciedforthesystemwillcause
mechanicalfailureorsystemmalfunctionorunitbreakdown.Intheworst
case,thiscouldleadtoaseriousimpedimenttosecuringproductsafety.
• Donotperformpumpdownworkwhenthereisagasleak.Theintakeofair
orothergasescausesabnormallyhighpressureintherefrigerationcycle,
whichmaycauseexplosionorinjury.
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1. Safety precautions
1.2.Beforeinstallation(relocation)
Caution:
• Beextremelycarefulwhentransportingtheunits.Thisworkrequiresmore
thanonepersonduetotheheavyweight.Donotgraspthepackagingbands.
Wearprotectiveglovestoremovetheunitfromthepackagingandtomoveit,
asyoucaninjureyourhandsonthensortheedgeofotherparts.
• Besuretosafelydisposeofthepackagingmaterials.Packagingmaterials,
suchasnailsandothermetalorwoodenpartsmaycausestabs or other
injuries.
• Thebaseandattachmentsoftheoutdoorunitmustbeperiodicallychecked
forlooseness,cracksorotherdamage.Ifsuchdefectsareleftuncorrected,
theunitmayfalldownandcausedamageorinjuries.
• Donotcleantheairconditionerunitwithwater.Electricshockmayresult.
• Tightenallarenutstospecicationusingatorquewrench.Iftightenedtoo
much,thearenutcanbreakafteranextendedperiodandrefrigerantcan
leakout.
1.3.Beforeelectricwork
Caution:
• Besuretoinstallcircuitbreakers.Ifnotinstalled,electricshockmayresult.
• Forthepowerlines,usestandardcablesofsufcientcapacity.Otherwise,a
shortcircuit,overheating,orremayresult.
• Wheninstallingthepowerlines,donotapplytensiontothecables.Ifthe
connectionsareloosened,thecablescansnaporbreakandoverheatingor
remayresult.
• Besuretogroundtheunit.Donotconnectthegroundwiretogasorwater
pipes,lightningrods,ortelephonegroundinglines.Iftheunitisnotprop-
erlygrounded,electricshockmayresult.
• Usecircuitbreakers(groundfaultinterrupter,isolatingswitch(+Bfuse),
andmoldedcasecircuitbreaker)withthespeciedcapacity.Ifthecircuit
breakercapacityislargerthanthespeciedcapacity,breakdownorre
mayresult.
1.4.Beforestartingthetestrun
Caution:
• Turnonthemainpowerswitchmorethan12hoursbeforestartingopera-
tion.Startingoperationjustafterturningonthepowerswitchcanseverely
damagetheinternalparts.Keepthemainpowerswitchturnedonduring
theoperationseason.
• Beforestartingoperation,checkthatallpanels,guardsandotherprotec-
tivepartsarecorrectlyinstalled.Rotating,hot,orhighvoltagepartscan
causeinjuries.
• Donottouchanyswitchwithwethands.Electricshockmayresult.
• Donottouchtherefrigerantpipeswithbarehandsduringoperation.The
refrigerantpipesarehotorcolddependingontheconditionoftheowing
refrigerant.Ifyoutouchthepipes,burnsorfrostbitemayresult.
• Afterstoppingoperation,besuretowaitatleasttenminutesbeforeturning
offthemainpowerswitch.Otherwise,waterleakageorbreakdownmay
result.
1.1.Beforeinstallation
Caution:
• Do not use the unit in an unusual environment. If the air conditioner is
installedinareasexposedtosteam,volatileoil(includingmachineoil),or
sulfuricgas,areasexposedtohighsaltcontentsuchastheseaside,orareas
wheretheunitwillbecoveredbysnow,theperformancecanbesignicantly
reducedandtheinternalpartscanbedamaged.
• Donotinstalltheunitwherecombustiblegasesmayleak,beproduced,ow,
oraccumulate.Ifcombustiblegasaccumulatesaroundtheunit,reorexplo-
sionmayresult.
• Theoutdoorunitproducescondensationduringtheheatingoperation.Make
suretoprovidedrainagearound the outdoor unit if such condensation is
likelytocausedamage.
• Wheninstallingtheunitinahospitalorcommunicationsofce,beprepared
for noise and electronic interference. Inverters, home appliances, high-
frequency medical equipment, and radio communications equipment can
causetheairconditionertomalfunctionorbreakdown.Theairconditioner
mayalsoaffectmedicalequipment,disturbingmedicalcare,andcommuni-
cationsequipment,harmingthescreendisplayquality.
• Followtheinstructionsbelowtopreventabrasivecomponentscontainedin
sandpaper and cutting tools from entering the refrigerant circuit because
thosecomponentscancausefailuresofthecompressorandvalves.
- To deburr pipes, use a reamer or other deburring tools, not sandpaper.
- To cut pipes, use a pipe cutter, not a grinder or other tools that use abrasive
materials.
- When cutting or deburring pipes, do not allow cutting chips or other foreign
matters to enter the pipes.
- If cutting chips or other foreign matters enter pipes, wipe them off the inside of
the pipes.
Warning:
• Useonlyauthorizedaccessoriesandaskadealeroranauthorizedtechni-
ciantoinstallthem.Ifaccessoriesareincorrectlyinstalled,waterleakage,
electricshock,orremayresult.
• Donotaltertheunit.Itmaycausere,electricshock,injuryorwaterleakage.
• The user should never attempt to repair the unit or transfer it to another
location.
Iftheunitisinstalledincorrectly,waterleakage,electricshock,orremay
result.Iftheairconditionermustberepairedormoved,askadealeroran
authorizedtechnician.
• Afterinstallationhasbeencompleted,checkforrefrigerantleaks.Ifrefriger-
antleaksintotheroomandcomesintocontactwiththeameofaheateror
portablecookingrange,poisonousgaseswillbereleased.
• Whenopeningorclosingthevalvebelowfreezingtemperatures,refrigerant
may spurt out from the gap between the valve stem and the valve body,
resultingininjuries.
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1. Safety precautions
2.Installationlocation
Fig.2-1
460+45
514
1050
220 600
1662
(mm)
2.1.Choosingtheoutdoorunitinstallationlocation
• Avoid locations exposed to direct sunlight or other sources of heat.
• Select a location from which noise emitted by the unit will not inconvenience
neighbors.
• Select a location permitting easy wiring and pipe access to the power source and
indoor unit.
• Avoidlocationswherecombustiblegasesmayleak,beproduced,ow,oraccumulate.
• Note that water may drain from the unit during operation.
• Select a level location that can bear the weight and vibration of the unit.
• Avoid locations where the unit can be covered by snow. In areas where heavy
snow fall is anticipated, special precautions such as raising the installation location
or installing a hood on the air intake must be taken to prevent the snow from
blockingtheairintakeorblowingdirectlyagainstit.Thiscanreducetheairowand
a malfunction may result.
• Avoid locations exposed to oil, steam, or sulfuric gas.
• Transport the unit using rope or a cart, etc. Transporting the unit by holding the
service panel handles may result in injury. If the unit is carried from the bottom,
handsorngersmaybepinched.
2.2.Outlinedimensions(Outdoorunit)(Fig.2-1)
2.3.Transportingtheunit
• Transport the unit using rope or a cart, etc. Transporting the unit by holding the
service panel handles may result in injury.
2.3.1.Hangingtheunit(Fig.2-2)
• Do not subject the unit to shocks or impacts.
• When delivering the unit by suspending it, use two straps that are each 5 m or more
in length.
• Place protection pads (boards, etc.) on parts that come into direct contact with the
straps, such as the corners of the unit, etc., to prevent scratches.
Warning:
• Whendeliveringtheunit,besuretosuspenditfromspeciedpositionson
theunit.
Additionally,besuretosecureitsothatitdoesnotshiftfromsidetoside,
andsupportitatfourpoints.
• Iftheunitiscarriedorsuspendedwithsupportatonlythreepoints,theunit
willbeunstableandmaytipoverorfall,resultingininjury.
Fig.2-2
Suspension ropes
(2 pieces × 5 m or longer)
Suspension area
(2 each for front and back)
Protection pads
(2 each for front
and back)
Protection pads
(2 each for front
and back)
Wire grilles
1.5.UsingR410Arefrigerantairconditioners
Caution:
• UseC1220copperphosphorus,forcopperandcopperalloyseamless
pipes,toconnecttherefrigerantpipes.Makesuretheinsidesofthepipes
arecleananddonotcontainanyharmfulcontaminantssuchassulfuric
compounds,oxidants,debris,ordust.Usepipeswiththespeciedthick-
ness.(Referto4.1.)Notethefollowingifreusingexistingpipesthatcarried
R22refrigerant.
- Replacetheexistingarenutsandarethearedsectionsagain.
- Do not use thin pipes. (Refer to 4.1.)
• Storethepipestobeusedduringinstallationindoorsandkeepbothends
ofthepipessealeduntiljustbeforebrazing.(Leaveelbowjoints,etc.in
theirpackaging.)Ifdust,debris,ormoistureenterstherefrigerantlines,oil
deteriorationorcompressorbreakdownmayresult.
• Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigeration
oilappliedtothearedsections.Ifmineraloilismixedintherefrigeration
oil,oildeteriorationmayresult.
• DonotuserefrigerantotherthanR410Arefrigerant.Ifanotherrefrigerantis
used,thechlorinewillcausetheoiltodeteriorate.
• UsethefollowingtoolsspecicallydesignedforusewithR410Arefriger-
ant.ThefollowingtoolsarenecessarytouseR410Arefrigerant.Contact
yournearestdealerforanyquestions.
Tools (for R410A)
Gauge manifold Flare tool
Charge hose Size adjustment gauge
Gas leak detector Vacuum pump adapter
Torque wrench Electronic refrigerant charging scale
• Besuretousethecorrecttools.Ifdust,debris,ormoistureentersthe
refrigerantlines,refrigerationoildeteriorationmayresult.
• Donotuseachargingcylinder.Ifachargingcylinderisused,thecomposition
oftherefrigerantwillchangeandtheefciencywillbelowered.
Fig.1-1
1.6.Accessoriesofoutdoorunit(Fig.1-1)
ø12.7 and ø25.4 piping is included with the P300 series. Use it in connection with the
on-site piping. Refer to 4.5.2.
1Joint pipe (liquid).........×1
2Joint pipe (gas) ...........×1
3Joint pipe-L (gas) ........×1
1 2 3
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2.Installationlocation
2.4.Constraintsonindoorunitinstallation
You should note that indoor units that can be connected to this outdoor unit are the following models.
• Indoor units with model numbers 10-250 can be connected.
When using Branch box, Indoor units with model numbers 15-50 can be connected.
Refer to the table 1 below for possible room, indoor unit combinations.
Verication
The rated capacity should be determined by observing the table below. The unit’s quantities are limited as shown in the following table 2. For the next step, make sure that
the total rated capacity selected will stay in a range of 50% – 130% of the outdoor unit capacity.
• PUMY-P250 14.0 – 36.4 kW
• PUMY-P300 16.8 – 43.5 kW
Table 1-1 City Multi indoor units
Indoor unit type 10 15 20 25 32 40 50 63 71 80 100 125 140 200 250
Rated capacity
(Cooling) (kW) 1.2 1.7 2.2 2.8 3.6 4.5 5.6 7.1 8.0 9.0 11.2 14.0 16.0 22.4 28.0
Table 1-2 M series
Indoor unit type 15 18 20 22 25 35 42 50
Rated capacity
(Cooling) (kW) 1.5 1.8 2.0 2.2 2.5 3.5 4.2 5.0
Table 2 Connectable indoor units quantities
• Only system
Model Only City Multi indoor units
(Connection without
Branch box)
Only M series indoor units
(Connection with
Branch box)
PUMY-P250 1-30 2-12
PUMY-P300 1-30 2-12
• Mixed system
Model One Branch box Two Branch box Three Branch box
Total
(City Multi indoor
units and connection
with Branch box)
City Multi
indoor units
Total
(City Multi indoor
units and connection
with Branch box)
City Multi
indoor units
Total
(City Multi indoor
units and connection
with Branch box)
Connection with
Branch box
City Multi
indoor units
PUMY-P250 Max. 30 Max. 25*1Max. 30 Max. 23*1Max. 30 Max. 12 Max. 22*1
PUMY-P300 Max. 30 Max. 25*1Max. 30 Max. 23*1Max. 30 Max. 12 Max. 22*1
Table 3 Connectable Branch box quantities
Model Branch box
PUMY-P250/300 0-3*2
*1 PKFY-P10–32VLM, PFFY-P·VKM, PFFY-P·VCM, and PFFY-P·VL✽type indoor units cannot be used in a mixed system.
*2 The maximum total capacity of the units that can be connected each branch box is 20.2 kW.
Combinations in which the total capacity of indoor units exceeds the capacity of the outdoor unit will reduce the cooling capacity of each indoor unit below their rated cooling
capacity. Thus, combine indoor units with an outdoor unit within the outdoor unit’s capacity, if possible.
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2.Installationlocation
2.5.ConnectingaPEFY-P∙VMA3-E
WhenusingaPEFY-P∙VMA3-E,usethefollowingcombinationsfortheconnectedindoorunits.
PUMY-P250 PUMY-P300
OK PEFY-P63VMA3-E × 4
PEFY-P80VMA3-E × 1
+
PEFY-P71VMA3-E × 3
NO
All combinations excluding the above combinations All combinations excluding the above combinations
Ex. 1: PEFY-P63VMA3-E × 3
+
PEFY-P63VMA-E × 1
Ex. 2: PEFY-P63VMA3-E × 3
Ex. 3: PEFY-P63VMA3-E × 1
+
PEFY-P80VMA3-E × 3
(A combination for a PUMY-P300)
Ex. 4: PEFY-P63VMA3-E × 4
+
MSZ-AP25VG × 1
Ex. 1: PEFY-P71VMA3-E × 3
+
PEFY-P80VMA-E × 1
Ex. 2: PEFY-P71VMA3-E × 3
Ex. 3: PEFY-P63VMA3-E × 4
(A combination for a PUMY-P250)
Ex. 4: PEFY-P80VMA3-E × 1
+
PEFY-P71VMA3-E × 3
+
MSZ-AP25VG × 1
Ex. 1: A ceiling-concealed unit other than a VMA3 series is selected. Combina-
tions with a ceiling-concealed different series are not possible.
Ex. 2: The number of units is incorrect.
Ex. 3: The combination is for a unit with a different capacity.
Ex. 4: The combination is not an “OK” combination.
2.6.ConnectingaPLFY-EP∙VEM-E
ForthePLFY-EP∙VEM-E,authorizedconnectableindoorunitsareonlyasfollows.
• PUMY-P250: PLFY-EP63VEM-E × 4
• PUMY-P300: PLFY-EP50VEM-E × 1 + EP63VEM-E × 4
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2.Installationlocation
2.7.1.Wheninstallingasingleoutdoorunit
Minimum dimensions are as follows, except for Max., meaning Maximum dimen-
sions, indicated.
Refertotheguresforeachcase.
1Obstacles at rear (Fig. 2-3)
2Obstacles at rear and above (Fig. 2-4)
3Obstacles at rear and sides (Fig. 2-5)
4Obstacles at front (Fig. 2-6)
* When using the optional air outlet guides, the clearance is 500 mm or more.
5Obstacles at front and rear (Fig. 2-7)
* When using the optional air outlet guides, the clearance is 500 mm or more.
6Obstacles at rear, sides, and above (Fig. 2-8)
•Donotinstalltheoptionalairoutletguidesforupwardairow.
2.7.2.Wheninstallingmultipleoutdoorunits
Leave 25 mm space or more between the units.
1Obstacles at rear (Fig. 2-9)
2Obstacles at rear and above (Fig. 2-10)
• No more than 3 units must be installed side by side. In addition, leave space as shown.
•Donotinstalltheoptionalairoutletguidesforupwardairow.
3Obstacles at front (Fig. 2-11)
* When using the optional air outlet guides, the clearance is 1000 mm or more.
4Obstacles at front and rear (Fig. 2-12)
* When using the optional air outlet guides, the clearance is 1000 mm or more.
5Single parallel unit arrangement (Fig. 2-13)
*When using the optional air outlet guides installed for upward airow, the clearance is
1000 mm or more.
6Multiple parallel unit arrangement (Fig. 2-14)
*When using the optional air outlet guides installed for upward airow, the clearance is
2500 mm or more.
7Stacked unit arrangement (Fig. 2-15)
• The units can be stacked up to 2 units.
• No more than 2 stacked units must be installed side by side. In addition, leave space as
shown.
Fig.2-6Fig.2-5Fig.2-4Fig.2-3
Fig.2-7 Fig.2-8 Fig.2-9
Fig.2-10
Fig.2-13 Fig.2-14 Fig.2-15
Fig.2-11 Fig.2-12
2.7. Ventilationandservicespace
Note:
Thedimensionsgivenalongthearrowsabovearerequiredtoguaranteethe
airconditioner’sperformance.Installtheunitinaswideaplaceaspossible
forlaterserviceorrepairs.
150
1000
1000
200
200
300
Max. 500
1000
150
300
Max. 500
1500
500
250
250
300
500
1500
Max. 300
1500
1500
1500 500
1000
600 2000
✽
150
500
5000
1500
600
1500
800
150
(mm)
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3.Installingtheoutdoorunit
• Be sure to install the unit in a sturdy, level surface to prevent rattling noises dur-
ing operation. (Fig. 3-1)
<Foundationspecications>
Foundation bolt M10
Thickness of concrete 120 mm
Length of bolt 70 mm
Weight-bearing capacity 320 kg
• Make sure that the length of the foundation bolt is within 30 mm of the bottom
surface of the base.
• Securethebaseoftheunitrmlywithfour-M10foundationboltsinsturdyloca-
tions.
Installingtheoutdoorunit
• Do not block the vent. If the vent is blocked, operation will be hindered and break-
down may result.
• In addition to the unit base, use the installation holes on the back of the unit to
attach wires, etc., if necessary to install the unit. Use self-tapping screws (ø5 ×
15 mm or less) and install on site.
Warning:
• Theunitmustbesecurely installedona structurethat cansustain its
weight.
Iftheunitismountedonanunstablestructure,itmayfalldownandcause
damageorinjuries.
• Theunitmustbeinstalledaccordingtotheinstructionsinordertomini-
mizetheriskofdamagefromearthquakes,typhoons,orstrongwinds.An
incorrectlyinstalledunitmayfalldownandcausedamageorinjuries.
Caution:
• Installtheunitonarigidstructuretopreventexcessiveoperationsoundor
vibration.
B
(mm)
AM10 (3/8") bolt
BBase
C As long as possible.
DVent
ESet deep in the ground
E
C
AA
D
A
Max. 30
Fig.3-1
Min. 475
Min. 25
600 600
220 230
514
460
559
26
45
1050
Fig.2-16
Fig.2-17
Fig.2-18
B
A
AAir protect guide
BWind direction
2.7.3.Windylocationinstallation
When installing the outdoor unit on a rooftop or other location unprotected from the
wind, situate the air outlet of the unit so that it is not directly exposed to strong winds.
Strongwindenteringtheairoutletmayimpedethenormalairowandamalfunction
may result.
The following shows three examples of precautions against strong winds.
1Face the air outlet towards the nearest available wall about 50 cm away from the
wall. (Fig. 2-16)
2Install an optional air protect guide if the unit is installed in a location where strong
winds from a typhoon, etc. may directly enter the air outlet. (Fig. 2-17)
3Position the unit so that the air outlet blows perpendicularly to the seasonal wind
direction, if possible. (Fig. 2-18)
2.Installationlocation
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4.Installingtherefrigerantpiping
4.1.PrecautionsfordevicesthatuseR410Arefrigerant
• Referto1.5.forprecautionsnotincludedbelowonusingairconditionerswithR410Arefrigerant.
• Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigerationoilappliedtothearedsections.
• UseC1220copperphosphorus,forcopperandcopperalloyseamlesspipes,toconnecttherefrigerantpipes.Userefrigerantpipeswiththethicknessesspeci-
edinthetabletothebelow.Makesuretheinsidesofthepipesarecleananddonotcontainanyharmfulcontaminantssuchassulfuriccompounds,oxidants,
debris,ordust.
Warning:
Wheninstallingorrelocating,orservicingtheoutdoorunit,useonlythespeciedrefrigerant(R410A)tochargetherefrigerantlines.Donotmixitwithanyother
refrigerantanddonotallowairtoremaininthelines.
Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhighpressureintherefrigerantline,andmayresultinanexplosionandotherhazards.
Theuseofanyrefrigerantotherthanthatspeciedforthesystemwillcausemechanicalfailureorsystemmalfunctionorunitbreakdown.Intheworstcase,this
couldleadtoaseriousimpedimenttosecuringproductsafety.
ø6.35 mm, ø9.52 mm, ø12.7 mm Thickness 0.8 mm
ø15.88 mm, ø19.05 mm, ø22.2 mm, ø25.4 mm Thickness 1.0 mm
• Donotusepipesthinnerthanthosespeciedabove.
• Use1/2HorHpipesifthediameteris19.05mmorlarger.
• ThethicknesseslistedinthetableabovearebasedonJapanesestandards.Usepipeswithamaximumworkingpressureof4.15MPaorhigheraccordingto
localstandards.
Caution:
Followtheinstructionsbelowtopreventabrasivecomponentscontainedinsandpaperandcuttingtoolsfromenteringtherefrigerantcircuitbecausethosecom-
ponentscancausefailuresofthecompressorandvalves.
• Todeburrpipes,useareamerorotherdeburringtools,notsandpaper.
• Tocutpipes,useapipecutter,notagrinderorothertoolsthatuseabrasivematerials.
• Whencuttingordeburringpipes,donotallowcuttingchipsorotherforeignmatterstoenterthepipes.
• Ifcuttingchipsorotherforeignmattersenterpipes,wipethemofftheinsideofthepipes.
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4.Installingtherefrigerantpiping
A
Liquid pipe Gas pipe
P250 L [90 m ø9.52* ø22.2
L>90m ø12.7 ø22.2
P300 All ø12.7 ø25.4
B, C, D
Total down-stream
capacity of indoor
units
Liquid pipe Gas pipe
– 16.0 kW P250 L [90 m ø9.52*
ø15.88
L>90m ø12.7
P300 All ø12.7
16.1 – 22.4 kW P250 L [90 m ø9.52*
ø19.05L>90m ø12.7
P300 All ø12.7
22.5 – 36.4 kW P250 L [90 m ø9.52*
ø22.2L>90m ø12.7
P300 All ø12.7
36.5 kW – P300 All ø12.7 ø25.4
L: The farthest piping length from the outdoor unit to an indoor unit.
* ø12.7 when connecting the indoor unit for PEFY-P200 or P250.
a, b, c, d, e, f (mm)
Model number Liquid pipe Gas pipe
10, 15, 20, 25, 32, 40, 50 ø6.35 ø12.7
63, 71, 80, 100, 125, 140 ø9.52 ø15.88
200 ø9.52 ø19.05
250 ø9.52 ø22.2
Branch kit model
CMY-Y62-G-E
4-Branching header 8-Branching header
CMY-Y64-G-E CMY-Y68-G-E
Note:
When connecting the CONNECTION KIT (PAC-LV11M-J) and an M series indoor
unit, refer to the installation manual for the CONNECTION KIT when selecting the
pipe size and piping length.
B
A
H
B C
L
R
De
a
h
b c d
C
C
A
C C C
AOutdoor Unit
BFirst Branch
CIndoor unit
DCap
Fig.4-1
Permissible
length
(one-way)
Total piping length c1 + c2 + b1 + b2 + b3 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 + a12
[240 m
Farthest piping length (L) c1 + c2 + b3 + a12 [80 m
Piping length between outdoor unit and branch boxes c1 + c2 + b1 + b2 + b3 [95 m
Farthestbranchboxfromtherstjoint c2 + b3 [30 m
Farthest piping length after branch box (R)a12 [25 m
Total piping length between branch boxes and indoor units a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 + a12 [145 m
Permissible
height difference
(one-way)
In indoor/outdoor section (H) *1 H [50 m (In case of outdoor unit is set higher than indoor unit)
H [40 m (In case of outdoor unit is set lower than indoor unit)
In branch box / indoor unit section h1 + h2 [15 m
In each branch unit (h2) h2 [15 m
In each indoor unit (h3) h3 [12 m
Number of bends
| c1 + b1 + a1 |, | c1 + b1 + a2 |, | c1 + b1 + a3 |, | c1 + b1 + a4 |, | c1 + b1 + a5 |, | c1 + c2 +
b2 + a6|, |c1 + c2 + b2 + a7|, |c1 + c2 + b2 + a8|, |c1 + c2 + b2 + a9|, |c1 + c2 + b2 + a10|,
|c1 + c2 + b3 + a11|, |c1 + c2 + b3 + a12| [23
*1 Branch box should be placed within the level between the outdoor unit and indoor units.
Fig.4-2
B
DEb3
B
C C CC
C
L
R
h2
b1
c1 c2
a11 a12
a5a4a3a2
h1
H*1
a1
B
b2
a10a9a8a7a6
C C C C
C
h3
AOutdoor unit
BBranch box
CIndoor unit
DTherstjoint
EThe second joint
4.1.2.ConnectionwithBranchbox(Fig.4-2)
B
A
A
abc d
C
D
e f
H
h
L
R
C C C C C
A+B+C+D+a+b+c+d+e [310 m
L = A+B+C+D+e [150 m
R= B+C+D+e [30 m
H [50 m (Outdoor lower H [ 40 m)
h [15 m
A+a+b+c+d+e+f [310 m
L = A+f [150 m, R= f [30 m
H [50 m (Outdoor lower H [40 m)
h [15 m
4.1.1.ConnectionwithoutBranchbox(Fig.4-1)
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Conversion formula
1/4 F ø6.35
3/8 F ø9.52
1/2 F ø12.7
5/8 F ø15.88
3/4 F ø19.05
7/8 F ø22.2
1 F ø25.4
Fig.4-4
Fig.4-5
A (outside) B (inside)
4.Installingtherefrigerantpiping
Fig.4-3
■Incaseofusing1-branchbox
Flare connection employed. (No. brazing)
A
C CCCC
AB
B
CCCCC
A A
B
CCCCC
B B
CC
■Incaseofusing3-branchboxes
■Incaseofusing2-branchboxes
Branch box
2 branches pipe (joint)
: optional parts.
2 branches pipe (joint)
: optional parts.
Branch box #2
Branch box #3 Branch box #2
Branch box #1
Branch box #1
Selectingpipesize(Fig.4-3)
A
Model Liquid pipe Gas pipe
P250 ø9.52 ø22.2
P300 ø12.7 ø25.4
B
Total down-stream capacity
of indoor units Model Liquid pipe Gas pipe
– 16.0 kW P250 ø9.52 ø15.88
P300 ø12.7
16.1 kW – 22.4 kW P250 ø9.52 ø19.05
P300 ø12.7
22.5 kW – P250 ø9.52 ø22.2
P300 ø12.7
C
The piping connection size differs according to the type and capacity of indoor units.
Match the piping connection size of branch box with indoor unit.
If the piping connection size of branch box does not match the piping connection
size of indoor unit, use optional different-diameter (deformed) joints to the branch
box side.
(Connect deformed joint directly to the branch box side.)
Different-diameterjoint(optionalparts)(Fig.4-4,4-5)
Model name Connected pipes diameter Diameter A Diameter B
mm mm mm
MAC-A454JP ø9.52 →ø12.7 ø9.52 ø12.7
MAC-A455JP ø12.7 →ø9.52 ø12.7 ø9.52
MAC-A456JP ø12.7 →ø15.88 ø12.7 ø15.88
PAC-493PI ø6.35 →ø9.52 ø6.35 ø9.52
PAC-SG76RJ-E ø9.52 →ø15.88 ø9.52 ø15.88
PAC-SG75RJ-E ø15.88 →ø19.05 ø15.88 ø19.05
PAC-SG71RJ-E ø15.88*1→ø22.2*2 ø15.88 *1 ø22.2 *2
PAC-SG77RJ-E ø15.88*1→ø25.4*2 ø15.88 *1 ø25.4 *2
*1WhenconnectingtoMSDD-50AR-Eorabranchbox,arethepipeson-site.
Use the nuts that are included with the 2-branch pipe and branch box.
*2 Brazing
2branchpipe(Joint):Optionalparts(Accordingtotheconnectionmethod,
youcanchoosethefavoriteone.)
Model name Connection method
MSDD-50AR-E are
MSDD-50BR-E brazing
■ Installationprocedure(2branchespipe(Joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
Thelineupofaconnectableindoorunitdependsona
district/areas/country.
■Pipesize(Branchbox-Indoorunit)*CaseofMseriesIndoorunit
Indoor unit
type (kW) 15 20 22 25 35 42 50
Pipe size
(mm)
Liquid ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35
Gas ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø12.7
(1)Valve size of branch box for outdoor unit
For liquid ø9.52 mm
For gas ø15.88 mm
(2)Valve size of branch box for indoor unit
AUNIT Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
BUNIT Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
CUNIT Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
DUNIT Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
EUNIT Liquid pipe ø6.35 mm
Gas pipe ø12.7 mm
* 3-branch type : only A, B, Cunit
A B
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AOutdoor unit
BFirst joint
CBranch header
DBranch box
ECity Multi Indoor unit
FM series Indoor unit
Permissible length
(One-way)
Total piping length e1 + d1 + d2 + c1 + c2 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 [310 m
Farthest piping length (L1) e1 + d2 + a1 or e1 + d1 + c1 + b2 [85 m
Farthest piping length. Via Branch box (L2) e1 + d1 + c1 + b1 + a8 [80 m
Piping length between outdoor unit and branch box e1 + d1 + c1 + b1 [80 m
Farthestpipinglengthfromtherstjoint d1 + c1 + b1 or d1 + c1 + b2 [30 m
Farthest piping length after branch box a8 [25 m
Total piping length between branch boxes and indoor units a4 + a5 + a6 + a7 + a8 [145 m
Permissible height
difference
(One-way)
In indoor/outdoor section (H)*1 H [50 m (In case of outdoor unit is set higher than indoor unit)
H [40 m (In case of outdoor unit is set lower than indoor unit)
In branch box/indoor unit section (h1) h1 [15 m
In each indoor unit (h3) h3 [12 m
Number of bends
|e1 + d2 + a1|, |e1 + d2 + a2|, |e1 + d2 + a3|, |e1 + d1 + c2|, |e1 + d1 + c1 + b2|,
|e1 + d1 + c1 + b1 + a4|, |e1 + d1 + c1 + b1 + a5|, |e1 + d1 + c1 + b1 + a6|,
|e1 + d1 + c1 + b1 + a7|, |e1 + d1 + c1 + b1 + a8| [23
*1: Branch box should be placed within the level between the outdoor unit and indoor units.
AOutdoor unit
BFirst joint
CBranch header
DBranch box
ECity Multi Indoor unit
FM series Indoor unit
Permissible length
(One-way)
Total piping length d1 + c1 + c2 + b1 + b2 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 [
310 m
Farthest piping length (L1) d1 + c1 + a1 [85 m
Farthest piping length. Via branch box (L2) d1 + c2 + b2 + a11 [80 m
Piping length between outdoor unit and branch boxes d1 + c2 + b1 + b2 [95 m
Farthestpipinglengthfromtherstjoint c2 + b2 or c1 + a1 [30 m
Farthest piping length after branch box a11 [25 m
Total piping length between branch boxes and indoor units a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 [145 m
Permissible height
difference
(One-way)
In indoor/outdoor section (H)*1 H [50 m (In case of outdoor unit is set higher than indoor unit)
H [40 m (In case of outdoor unit is set lower than indoor unit)
In branch box/indoor unit section h1 + h2 [15 m
In each branch unit (h2) h2 [15 m
In each indoor unit (h3) h3 [12 m
Number of bends
|d1 + c1 + a1|, |d1 + c1 + a2|, |d1 + c1 + a3|, |d1 + c2 + b1 + a4|, |d1 + c2 + b1 + a5|,
|d1 + c2 + b1 + a6|, |d1 + c2 + b1 + a7|, |d1 + c2 + b1 + a8|, |d1 + c2 + b2 + a9|,
|d1 + c2 + b2 + a10|, |d1 + c2 + b2 + a11| [23
*1: Branch box should be placed within the level between the outdoor unit and indoor units.
4.1.3-2Incaseofusing2-Branchboxes
4.1.3.Mixingsystem(CityMultiindoorunitsandMseriesindoorunits(ConnectionwithBranchbox))(Fig.4-6)
4.1.3-1Incaseofusing1-Branchbox
A
B
e1
d2
L2
d1
b1c1
c2 b2
H*1
h3
h1
C
D
a1
a2 a3
a4 a5 a6 a7 a8
E
E E
E E FF F F F
L1
A
B
d1
c1
L2
L1
c2 b2
b1
h1
h2
H*1
h3
C
D
D
a1
a2 a3
a4 a5 a6 a7 a8 a9 a10 a11
E
E E
FF F
F F
F
FF
Fig.4-6(a)
Fig.4-6(b)
4.Installingtherefrigerantpiping
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4.Installingtherefrigerantpiping
Permissible
length
(one-way)
Total piping length d1 + c1 + c2 + c3 + b1 + b2 + b3 + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10 +
a11 + a12 + a13 + a14 + a15 [ 310 m
Farthest piping length (L1) d1 + c1 + a1 [ 85 m
Farthest piping length via branch box (L2) d1 + c2 + c3 + b3 + a15 [80 m
Piping length between outdoor unit and branch boxes d1 + c2 + c3 + b1 + b2 + b3 [95 m
Farthestpipinglengthfromtherstjoint c2 + c3 + b3 or c1 + a1 [30 m
Farthest piping length after branch box (R)a15 [25 m
Total piping length between branch boxes and indoor units a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 + a12 + a13 + a14 + a15 [ 145 m
Permissible
height difference
(one-way)
In indoor/outdoor section (H) *1 H [50 m (In case of outdoor unit is set higher than indoor unit)
H [40 m (In case of outdoor unit is set lower than indoor unit)
In branch box/indoor unit section h1 + h2 [15 m
In each branch unit (h2) h2 [15 m
In each indoor unit (h3) h3 [12 m
Number of bends
|d1 + c1 + a1| , |d1 + c1 + a2| , |d1 + c1 + a3|,
|d1 + c2 + b1 + a4| , |d1 + c2 + b1 + a5|, |d1 + c2 + b1 + a6|, |d1 + c2 + b1 + a7|,
|d1 + c2 + b1 + a8|, |d1 + c2 + c3 + b2 + a9|, |d1 + c2 + c3 + b2 + a10|,
|d1 + c2 + c3 + b2 + a11|, |d1 + c2 + c3 + b2 + a12|, |d1 + c2 + c3 + b2 + a13|,
|d1 + c2 + c3 + b3 + a14|, |d1 + c2 + c3 + b3 + a15|
[
23
*1 Branch box should be placed within the level between the outdoor unit and indoor units.
4.1.3-3Incaseofusing3-Branchboxes
b3
R
c3
A
B
d1
c1
c2
h3
C
a1 a2
a3
EE
E
h2
L2
H*¹
L1
h1
D
a4
b1
a5 a6 a7 a8
FF F F F
D
D
a9
b2
a10 a11 a12 a13
FF F
a14
F
a15
F
F F
Fig.4-6(c)
AOutdoor unit
BFirst joint
CBranch header
DBranch box
ECity Multi indoor unit
FM series indoor unit
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Branch box
Port A
Port B
Port C
Port D
Port E
Branchboxpipesize
4.1.3-4Selectingpipesize(Fig.4-7)
Systempipesize A
Model Liquid pipe Gas pipe
P250 ø9.52* ø22.2
P300 ø12.7 ø25.4
B, C, D, E
Total down-stream capacity
of indoor units Model Liquid pipe Gas pipe
– 16.0 kW P250 ø9.52* ø15.88
P300 ø12.7
16.1 kW – 22.4 kW P250 ø9.52* ø19.05
P300 ø12.7
22.5 kW – 36.4 kW P250 ø9.52* ø22.2
P300 ø12.7
36.5 kW – P300 ø12.7 ø25.4
* ø12.7 when connecting the indoor unit for PEFY-P200 or P250.
a, b, c – j
Indoor unit series Model number ALiquid pipe BGas pipe
City Multi
10 – 50 ø6.35 ø12.7
63 – 140 ø9.52 ø15.88
200 ø9.52 ø19.05
250 ø9.52 ø22.2
M series 15 – 42 ø6.35 ø9.52
50 ø6.35 ø12.7
2-branch joint CMY-Y62-G-E
4-branch header CMY-Y64-G-E
8-branch header CMY-Y68-G-E
Different-diameterjoint(optionalparts)(Fig.4-4,4-5)
Model name Connected pipes diameter Diameter A Diameter B
mm mm mm
MAC-A454JP ø9.52 →ø12.7 ø9.52 ø12.7
MAC-A455JP ø12.7 →ø9.52 ø12.7 ø9.52
MAC-A456JP ø12.7 →ø15.88 ø12.7 ø15.88
PAC-493PI ø6.35 →ø9.52 ø6.35 ø9.52
PAC-SG76RJ-E ø9.52 →ø15.88 ø9.52 ø15.88
PAC-SG75RJ-E ø15.88 →ø19.05 ø15.88 ø19.05
PAC-SG71RJ-E ø15.88*1→ø22.2*2 ø15.88 *1 ø22.2 *2
PAC-SG77RJ-E ø15.88*1→ø25.4*2 ø15.88 *1 ø25.4 *2
*1WhenconnectingtoMSDD-50AR-Eorabranchbox,arethepipeson-site.
Use the nuts that are included with the 2-branch pipe and branch box.
*2 Brazing
2branchpipe(Joint) :Optionalparts (Accordingtotheconnectionmethod,
youcanchoosethefavoriteone.)
Model name Connection method
MSDD-50AR-E are
MSDD-50BR-E brazing
A
A
E
B
C
C D
D
a
b c
d e f g h i j
E
E E
E E F F F F
F
AOutdoor unit
BFirst joint
CBranch header
DBranch box
ECity Multi Indoor unit
FM series Indoor unit
Fig.4-7
4.Installingtherefrigerantpiping
(1)Valve size of branch box for outdoor unit
For liquid ø9.52 mm
For gas ø15.88 mm
(2)Valve size of branch box for indoor unit
AUNIT Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
BUNIT Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
CUNIT Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
DUNIT Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
EUNIT Liquid pipe ø6.35 mm
Gas pipe ø12.7 mm
* 3-branch type : only A, B, Cunit
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4.2.Connectingpipes(Fig.4-8)
Fig. 4-1, 4-2, 4-6 are samples of piping systems.
• When commercially available copper pipes are used, wrap liquid and gas pipes
with commercially available insulation materials (heat-resistant to 120 °C or more,
thickness of 15 mm or more).
• Be sure to separate thermal insulation for gas and liquid refrigerant pipes.
• The indoor parts of the drain pipe should be wrapped with polyethylene foam insula-
tionmaterials(specicgravityof0.03,thicknessof9mmormore).
• Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening
arenut.A
• Forconnection,rstalignthecenter,thentightentherst3to4turnsofarenut
by hand.
• Use 2 wrenches to tighten piping connections. B
• Use leak detector or soapy water to check for gas leaks after connections are
completed.
• Applyrefrigeratingmachineoilovertheentireareseatsurface.C
• Useaarenutthatcorrespondstothesizeofthepipedescribedinsection4.1.
D
• When bending the pipes, be careful not to break them. Bend radius of 100 mm to
150mmissufcient.
• Make sure the pipes do not contact the compressor. Abnormal noise or vibration
may result.
• Pipes must be connected starting from the indoor unit.
Flare nuts must be tightened with a torque wrench.
• Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil
(Applied on site).
• Whenusualpipesealingisused,refertoTable1foraringofR410Arefrigerant
pipes.
ThesizeadjustmentgaugecanbeusedtoconrmAmeasurements.
• Install local piping on the outdoor unit side with non-oxidizing brazing.
For installation details, refer to Fig. 4-13.
Table 1 (Fig. 4-9)
Copper pipe O.D.
(mm)
A (mm)
Flare tool for R410A Flare tool for R22·R407C
Clutch type
ø6.35 (1/4") 0 - 0.5 1.0 - 1.5
ø9.52 (3/8") 0 - 0.5 1.0 - 1.5
ø12.7 (1/2") 0 - 0.5 1.0 - 1.5
ø15.88 (5/8") 0 - 0.5 1.0 - 1.5
ø19.05 (3/4") 0 - 0.5 1.0 - 1.5
A(Fig. 4-8)
Copper pipe O.D.
(mm)
Flare dimensions
øA dimensions (mm)
ø6.35 8.7 - 9.1
ø9.52 12.8 - 13.2
ø12.7 16.2 - 16.6
ø15.88 19.3 - 19.7
ø19.05 23.6 - 24.0
B(Fig. 4-8)
Copper pipe O.D.
(mm)
Flare nut O.D.
(mm)
Tightening torque
(N·m)
ø6.35 17 14 - 18
ø6.35 22 34 - 42
ø9.52 22 34 - 42
ø12.7 26 49 - 61
ø12.7 29 68 - 82
ø15.88 29 68 - 82
ø15.88 36 100 - 120
ø19.05 36 100 - 120
C
D
øA
R0.4~R0.8
A
45°i2°
B
Fig.4-8
AFlare cutting dimensions
BFlare nut tightening torque
90° ±0.5°
ADie
BCopper pipe
Fig.4-9
A
4.Installingtherefrigerantpiping
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4.Installingtherefrigerantpiping
4.3.Additionalrefrigerantcharge
Additionalrefrigerantcharge
Refrigerant for the extended piping is not included in the outdoor unit when the unit is
shipped from the factory. Therefore, charge each refrigerant piping system with ad-
ditional refrigerant at the installation site. In addition, in order to carry out service, en-
ter the size and length of each liquid pipe and additional refrigerant charge amounts
in the spaces provided on the “Refrigerant amount” plate on the outdoor unit.
* When the unit is stopped, charge the unit with the additional refrigerant through the
liquid stop valve after the pipe extensions and indoor units have been vacuumized.
When the unit is operating, add refrigerant to the gas check valve using a safety
charger. Do not add liquid refrigerant directly to the check valve.
Calculationofadditionalrefrigerantcharge
• Calculate the additional charge using the liquid pipe size and length of the extended
piping and total capacity of connected indoor units.
• Calculate the additional refrigerant charge using the procedure shown to the right,
and charge with the additional refrigerant.
• For amounts less than 0.1 kg, round up the calculated additional refrigerant charge.
(For example, if the calculated charge is 6.01 kg, round up the charge to 6.1 kg.)
• The amount of additional refrigerant which is calculated from the total capacity of
indoor units and the combination of extended pipes must not be over 22.8 kg.
(Refer to 2.4. for the capacity of indoor units, and 4.1. for extended piping.)
<Additionalcharge>
Calculationofrefrigerantcharge
Pipe size
Liquid pipe +
Pipe size
Liquid pipe +
Pipe size
Liquid pipe +
Total capacity of con-
nected indoor units
Amount for the
indoor units
ø6.35 ø9.52 ø12.7
– 16.0 kW
2.5 kg
(m) × 19.0 (g/m) (m) × 50.0 (g/m) (m) × 92.0 (g/m)
16.1 kW – 27.0 kW
3.0 kg
27.1 kW – 31.0 kW
3.5 kg
31.1 kW – 34.0 kW
4.0 kg
34.1 kW – 36.5 kW
4.5 kg
36.6 kW – 39.0 kW
5.0 kg
39.1 kW – 41.0 kW
5.5 kg
41.1 kW –
6.1 kg
Includedrefrigerantamountwhenshippedfromthefactory
Model name Included refrigerant amount
PUMY-P250YBM 9.3 kg
PUMY-P300YBM
<Example>
Outdoor model: PUMY-P250YBM A : ø9.52 30 m
Indoor 1: P63 (7.1 kW) a : ø9.52 15 m
2: P63 (7.1 kW) b : ø9.52 10 m
3: P63 (7.1 kW) c : ø9.52 10 m
4: P63 (7.1 kW) d : ø9.52 10 m
5: P40 (4.5 kW) e : ø6.35 15 m
The total length of each liquid line is as follows:
ø9.52 : A + a + b + c + d = 75 m
ø6.35 : e = 15 m
The total capacity of connected indoor unit is as follows:
7.1 + 7.1 + 7.1 + 7.1 + 4.5 = 32.9 (kW)
<Calculationexample>
Additional refrigerant charge
75 × 50.0 + 15 × 19.0 + 4.0 = 8.1 kg (rounded up)
1000 1000
At the
conditions
below:
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16
4.4.Refrigerantpiping(Fig.4-10)
Remove the service panel A(5 screws) and the front piping cover B(2 screws) and
rear piping cover D(4 screws).
1Perform refrigerant piping connections for the indoor/outdoor unit when the
outdoor unit’s stop valve is completely closed.
2Vacuum-purge air from the indoor unit and the connection piping.
3Attach the front cover and back cover to match each of the directions the piping
passes through. (Fig. 4-11)
Evacuation
Evacuate with the valve of the outdoor unit closed and evacuate both the connec-
tion piping and the indoor unit from the service port provided on the valve of the
outdoor unit using a vacuum pump. (Always evacuate from the service port of both
liquid pipe and gas pipe.) After the vacuum reaches 650 Pa [abs], continue evacu-
ation for at least one hour or more. Then, stop the vacuum pump and leave it for 1
hour. Ensure the degree of vacuum has not increased. (Ifthedegreeofvacuum
increaseislargerthan130Pa,watermighthaveentered.Applypressureto
drynitrogengasupto0.05MPaandvacuumagain.) Finally, seal in with the
liquid refrigerant through the liquid pipe, and adjust the gas piping to obtain an ap-
propriate amount of the refrigerant during operation.
* Never perform air purging using refrigerant.
4After connecting the refrigerant pipes, check the connected pipes and the
indoor unit for gas leaks. (Refer to 4.6. Refrigerant pipe airtight testing method)
5Vacuumize the refrigerant lines through the service port of the liquid and gas
stop valves. And then open the stop valves completely (for both the liquid and
gas stop valves). This will completely connect the refrigerant lines of the indoor
and outdoor units.
• If the stop valves are left closed and the unit is operated, the compressor
and control valves will be damaged.
• Use a leak detector or soapy water to check for gas leaks at the pipe con-
nection sections of the outdoor unit.
• Do not use the refrigerant from the unit to purge air from the refrigerant
lines.
• After the valve work is completed, tighten the valve caps to the correct
torque: 20 to 24.5 N·m (200 to 245 kgf·cm).
Failure to replace and tighten the caps may result in refrigerant leakage. In
addition, do not damage the insides of the valve caps as they act as a seal
to prevent refrigerant leakage.
6Use sealant to seal the ends of the thermal insulation around the pipe connec-
tion sections to prevent water from entering the thermal insulation.
Refrigerant pipes are protectively wrapped
• When routing piping using a piping cover, cut out the knockout in the piping cover
(Bor D) following the groove, and wrap the pipes. (Fig. 4-11)
Pipe inlet gap
• Use putty or sealant to seal the pipe inlet around the pipes so that no gaps remain.
(If the gaps are not closed, noise may be emitted or water and dust will enter the
unit and breakdown may result.)
4.Installingtherefrigerantpiping
Fig.4-10
Fig.4-11
B
A
D
E
C
Rear placement
Front placement Right placement
Below placement
A Service panel
BFront piping cover
CBend radius : 100 mm or more
DRear piping cover
EStop (Ball) valve
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17
4.Installingtherefrigerantpiping
Fig.4-13
4.5.Installingtherefrigerantpiping(mainpipe)(Fig.4-12)
4.5.1.Removingpinchconnectionpipes
• Perform piping connection and valve operation according to the procedure.
• Pinch connection pipes are attached to the on-site piping end of the liquid side and gas side operation valves when shipped
from the factory in order to prevent gas leakage. When connecting the refrigerant piping to the outdoor unit, remove the pinch
connection pipe of the operation valve according to the following procedure.
Procedure
1. Check that the operation valves are completely closed (turned clockwise).
2. Attach a charging hose to the service port of the liquid side and gas side operation valves, and remove the gas inside the
pinch connection pipes.
3. After removing the gas from inside the pinch connection pipes, cut the pinch connection pipes at the position shown in the
gure,andremovetherefrigerantoilinside.
4. After the work is completed, heat the brazing section and remove the pinch connection pipes.
2.
1.
4.
1.
2.
3.
4.5.2.Pipingconnectionandvalveoperation(Fig.4-13)
Serviceport
Used for removing gas from pinch
connection pipe, evacuating refrigerant
inside on-site piping, etc.
(10 to 14 N·m tightening torque) Cap
Remove the cap, and operate the operating
valve. After the work is completed, re-
attach the cap and sheet packing. (20 to
24.5 N·m tightening torque)
On-sitepiping
Perform non-oxidizing brazing.
Follow the procedure below to open or close the valve
(after refrigerant leak test, purging work, and refrigerant charge).
Serviceport
Used for removing gas from pinch connection
pipe, evacuating refrigerant inside on-site piping,
etc. (14 to 18 N·m tightening torque)
Stopper pin
Valve stem does not turn more than 90°.
Operatingvalve
Completely closed when shipped from the
factory.
Leave completely closed during piping con-
nection and evacuation, and make complete-
ly open after work is completed.
<Whenopening>
●Turntheoperatingvalvecounterclockwise.
●Turnuntiltheoperatingvalvestops.
<Whenclosing>
●Turntheoperatingvalveclockwise.
●Turnuntiltheoperatingvalvestops.
<Liquidside>
Brazingtype
<Gasside>
Brazingtype
Caution:
• Wrapthebodyoftheoperationvalvewithawettowelbeforeperformingbrazingwork.Ifthebodyoftheoperationvalvereachesatemperatureof120°Cor
higher,thedevicemaybedamaged.
• Duringbrazingwork,becarefulnottoapplytheametothesurroundingwiringorsheetmetal.Iftheycomeintocontactwiththeame,theymaybeburned
orfailduetotheheat.
• Performnon-oxidizingbrazingthroughnitrogensubstitution.Oxidizationontheinsideoftherefrigerantpipingmaycausedeteriorationofrefrigerantoilor
compressormalfunction.
• Afterevacuationandrefrigerantllingiscompleted,completelyopenthevalve.Iftheunitisoperatedwiththevalveclosed,thehighpressuresideorlow
pressuresideoftherefrigerantcircuitwillbecomeimproperlypressurized,whichmaydamagethecompressor.
• Determinetheamountofadditionalrefrigerantcharge(referto“4.3.Additionalrefrigerantcharge”),andchargerefrigerantadditionallythroughtheservice
portaftercompletingpipingconnectionwork.
Warning:
• Wheninstallingtheunit,securelyconnecttherefrigerantpipesbeforestartingthecompressor.
• Whenopeningorclosingthevalvebelowfreezingtemperatures,refrigerantmayspurtoutfromthegapbetweenthevalvestemandthevalvebody,resulting
ininjuries.
Operatingvalve
Completely closed when shipped from the factory.
Leave completely closed during piping connection
and evacuation, and make completely open after
work is completed.
<Whenopening>
●Turntheoperatingvalvecounterclockwisewitha
wrench.
●Turnuntiltheoperatingvalvestops.
<Whenclosing>
●Turntheoperatingvalveclockwisewithawrench.
●Turnuntiltheoperatingvalvestops.
●Refertothetabletotheunderforthecapandoperatingvalve
section tightening torque. As a guideline when not using a
torque wrench, tighten until the tightening torque suddenly
increases.
* Adjust the orientation of the pipe to match
each knockout port hole.
When widening the piping on-site, be sure to satisfy the mini-
mum pipe coupling depth in the table below.
Pipe diameter (mm) Minimum coupling depth (mm)
More than 5, less than 8 6
More than 8, less than 12 7
More than 12, less than 16 8
More than 16, less than 25 10
More than 25, less than 35 12
More than 35, less than 45 14
Model number Pipe diameter
PUMY-P250YBM ø9.52 *1
PUMY-P300YBM ø12.7
Model number Pipe diameter
PUMY-P250YBM ø22.2
PUMY-P300YBM ø25.4
and evacuation, and make completely open after
and evacuation, and make completely open after
work is completed.
work is completed.
<Whenopening>
<Whenopening>
●Turntheoperatingvalvecounterclockwisewitha
●Turntheoperatingvalvecounterclockwisewitha
wrench.
wrench.
●Turnuntiltheoperatingvalvestops.
●Turnuntiltheoperatingvalvestops.
<Whenclosing>
<Whenclosing>
●Turntheoperatingvalveclockwisewithawrench.
●Turntheoperatingvalveclockwisewithawrench.
●Turnuntiltheoperatingvalvestops.
●Turnuntiltheoperatingvalvestops.
Fully closed (factory default)
Valve shaft Valve shaft
Fully open
1. Remove the cap.
2. Remove the stopper.
3. Fully open the valve.
4. Attach the removed stopper.
5. Tighten the cap.
Cap
Stopper
Ball valve
Valve shaft
Note:
Besuretoattachthestopper.Failuretodosomayleadto
unintentionalrotationofthevalveshaft,thatistosay,thevalve
openedintheaboveproceduremaybeclosed,causingtheow
ofrefrigerantinterrupted.
A ø12.7 joint pipe is included with
the P300 model. * Use depending on the direction the piping
will pass through.
A ø25.4 joint pipe is included with
the P300 model.
*1 Use the pipe ø12.7 when the piping
length is over 90 m.
ø12.7 when connecting the indoor
unit for PEFY-P200 or P250.
Fig.4-12
Operatingvalve
Completely closed when shipped from the
factory.
Leave completely closed during piping con-
nection and evacuation, and make complete-
ly open after work is completed.
<Whenopening>
●Turntheoperatingvalvecounterclockwise.
●Turnuntiltheoperatingvalvestops.
<Whenclosing>
●Turntheoperatingvalveclockwise.
●Turnuntiltheoperatingvalvestops.
attach the cap and sheet packing. (20 to
24.5 N·m tightening torque)
Operatingvalve
Operatingvalve
Completely closed when shipped from the factory.
Completely closed when shipped from the factory.
Leave completely closed during piping connection
Leave completely closed during piping connection
Serviceport
Serviceport
Used for removing gas from pinch connection
Used for removing gas from pinch connection
pipe, evacuating refrigerant inside on-site piping,
pipe, evacuating refrigerant inside on-site piping,
etc. (14 to 18 N·m tightening torque)
etc. (14 to 18 N·m tightening torque)
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18
5.Drainagepipingwork
4.Installingtherefrigerantpiping
Precautionswhenusingthechargevalve(Fig.4-15)
Do not tighten the service port too much when installing it, otherwise, the valve core
could be deformed and become loose, causing a gas leak.
After positioning section Bin the desired direction, turn section Aonly and tighten it.
Do not further tighten sections Aand Btogether after tightening section A.
Outdoorunitdrainagepipeconnection
When drain piping is necessary, use the drain socket or the drain pan (option).
Drain socket PAC-SK27DS-E
Drain pan PAC-SJ83DP-E
LO HI
AC D
B
K
E F
G
H
I
Fig.4-15
Fig.4-14
4.6.Refrigerantpipeairtighttestingmethod
Airtighttest(Fig.4-14)
Airtight test should be made by pressurizing nitrogen gas. For the test method, refer
tothefollowinggure.
(1) Connecting the testing tool. Make a test with the stop valve closed. Be also sure
to pressurize both liquid or high-pressure pipe and gas or low pressure pipe.
(2)Donotaddpressuretothespeciedpressureallatonce;addpressurelittleby
little.
1Pressurize to 0.5 MPa, wait 5 minutes, and make sure the pressure does not
decrease.
2Pressurize to 1.5 MPa, wait 5 minutes, and make sure the pressure does not
decrease.
3Pressurize to 4.15 MPa and measure the surrounding temperature and refrig-
erant pressure.
(3)Ifthespecied pressure holds for about one day and does not decrease, the
pipes have passed the test and there are no leaks.
• If the surrounding temperature changes by 1°C, the pressure will change by
about 0.01 MPa. Make the necessary corrections.
(4) If the pressure decreases in steps (2) or (3), there is a gas leak. Look for the
source of the gas leak.
ANitrogen gas FOutdoor unit
BSystem analyzer GStop valve
CLo-knob HLiquid pipe or high-pressure pipe
DHi-knob IGas pipe or low-pressure pipe
ETo indoor unit KService port
CCharge hose
DService port
* Theguretotheleftisanexampleonly.
The stop valve shape, service port
position, etc., may vary according to the
model.
* Turn section Aonly.
(Do not further tighten sections Aand
Btogether.)
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19
H
K
I
G
J
6.Electricalwork
Fig.6-1
Fig.6-2
When connecting wiring to the terminal
block during wiring work, route the wiring
so that it does not come into direct contact
with especially hot parts (such as the 4 way
valve) of the devices inside the outdoor unit.
6.1.Caution
1Follow ordinance of your governmental organization for technical standard
related to electrical equipment, wiring regulations and guidance of each electric
power company.
2Use self-extinguishing distribution cables for power supply wiring.
3Wiring for control (hereinafter referred to as transmission line) shall be (5 cm
ormore)apartfrompowersourcewiringsothatitisnotinuencedbyelectric
noise from power source wiring. (Do not insert transmission line and power
source wire in the same conduit.)
4Be sure to provide designated grounding work to outdoor unit.
5Give some allowance to wiring for electrical part box of indoor and outdoor
units, because the box is sometimes removed at the time of service work.
6Never connect the main power source to terminal block of transmission line. If
connected, electrical parts will be burnt out.
7Use 2-core shield cable for transmission line. If transmission lines of different
systems are wired with the same multiplecore cable, the resultant poor trans-
mitting and receiving will cause erroneous operations.
8 Onlythetransmissionlinespeciedshouldbeconnectedtotheterminalblock
for outdoor unit transmission.
(Transmission line to be connected with indoor unit : Terminal block TB3 for
transmission line, Other : Terminal block TB7 for centralized control)
Erroneous connection does not allow the system to operate.
9In case to connect with centralized controller or to conduct group operation
in different refrigerant systems, the control line for transmission is required
between the outdoor units each other.
Connect this control line between the terminal blocks for centralized control.
(2-wire line with no polarity)
When conducting group operation in different refrigerant systems without
connecting to centralized controller, replace the insertion of the short circuit
connector from CN41 of one outdoor unit to CN40.
0Group is set by operating the remote controller.
GCover panel
HPower supply wire for outdoor unit
IPower supply wire for branch box
JTransmission wire
KCable clamps
S
M1 M2
S
TB3 TB7
M1 M2
B1 B2
TB1B
L1
L2 L3
N
TB1
E
C
B
AF
D
APower source
BPower supply for branch box
CScrew on the electrical component box
DTransmission line
EScrew on the electrical component box
for ground connection (TB3)
F Screw on the electrical component box
for ground connection (TB7)
6.2.Controlboxandconnectingpositionofwiring
(Fig.6-1)
1. Connect the wiring between the outdoor unit and the branch box to the trans-
mission terminal block (TB3) of the outdoor unit.
Connect the wiring between the outdoor unit and the centralized control system
to the transmission terminal block (TB7) of the outdoor unit.
Connect the ground of the shielded wiring to the shield terminal (S) of the
terminal block (TB3) or (TB7).
If the connection of the outdoor unit’s transmission power supply connector
has been changed from CN41 to CN42, connect the shield terminal (S) of the
terminal block (TB7) to the screw (F) using the grounding lead wire attached
this manual.
* The shield terminal (S) of the transmission terminal block (TB3) is connected to
the ground (E) when the unit is shipped from the factory.
2. The terminal block (TB1B) is for supplying power to the branch box
(220 V-240 V. max 10A).
3. After removing the knock-out pieces from cover panel G.
Pass the power supply and transmission wires through the knock-out holes.
4. Fix the power supply and transmission wires using clamps K. Refer to Fig. 6-1.
Caution:
Neverconnectthetransmissionlineforthebranchboxorthecentralcontrol
system transmission line to this terminal block (TB1B). If the transmission
linesareconnected,theindoorunitterminalblock,branchboxterminalblock
orcentralizedcontrolterminalblockcouldbedamaged.
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