York VRF Multi-Port Change-Over Box – 12 Ports Installation guide

York
Brand
York
Model
VRF Multi-Port Change-Over Box – 12 Ports
Category
Split-system air conditioners
Type
Installation guide

This manual is also suitable for

P5417012
Models:
COB04M132B22S
COB08M264B22S
COB12M264B22S
Installation
Manual
for
Cooling / Heating
Change-Over Box
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL
CAREFULLY
BEFORE INSTALLING
THIS CHANGE-OVER BOX.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
P5417012-rev.3
i
4
: Available
×
: Not Available
● SinglePortChange-overboxmodels[COBS_B21S(C)]arebeingdiscontinued.However,theywillbe
suppliedforservicingandmaintenanceuntilfurthernotice.Ifthereisaneedforareplacementorpartsfor
theSinglePortChange-overboxmodels[COBS_B21S(C)],pleasecallTechSupportat:1-844-873-4445
(option2).
1.Notavailableforwatersourceunit.
Change-OverBox
(Example:COBS048B21S)
VRF(HeatRecovery)
(Example:(H,Y)VAHR072B31S)
VRF(HeatRecovery)
1
(Example:(H,Y)VAHR072B32S)
Change-OverBox
(Example:COB04M132B22S)
4
4
4
4
4
4
×
×
Compatibility for Single Port Change-over box models [COBS_B21S(C)],
Single Port Change-over box models [COBS_B22S(C)],
and Multi Port Change-over box models (COBS_M_B22S)
● SinglePortChange-overboxmodels[COBS_B22S(C)],MultiPortChange-overboxmodels
(COBS_M_B22S),andSinglePortChange-overboxmodels[COBS_B21S(C)]cannotoperateinthe
samesystemtogether.
● SinglePortChange-overboxmodels[COBS_B22S(C)]andMultiPortChange-overboxmodels
(COBS_M_B22S)areonlycompatiblewiththeoutdoorunits[(H,Y)VAHR_B3(4)2S]andthewatersource
units[(H,Y)VWHR_B(3,4)2S].
ThewiredcontrollerwilldisplaythealarmcodeC4andtheoutdoorunits[(H,Y)VAHR_B3(4)1S]willnot
operateiftheSinglePortChange-overboxmodels[COBS_B22S(C)]andMultiPortChange-overbox
models(COBS_M_B22S)aremismatchedwithoutdoorunits[(H,Y)VAHR_B3(4)1S].
● SinglePortChange-overboxmodels[COBS_B21S(C)]arecompatiblewithboththeoutdoorunits
[(H,Y)VAHR_B3(4)1S]and[(H,Y)VAHR_B3(4)2S]withlimitations.
SinglePortChange-overboxmodels[COBS_B21S(C)]arenotcompatiblewiththewatersourceunit.
Thewiredcontrollerwilldisplaythealarmcode30andtheunitswillnotoperateiftheSinglePort
Change-overboxmodels[COBS_B21S(C)]aremismatchedwithawatersourceunit.
RefertotheHeatRecoveryInstallationandMaintenanceManualformoredetails.
ii
P5417012-rev.3
IMPORTANT NOTICE
● Theapplicableoutdoorunitmaybedierentdependingontheproductseries.
Impropercombinationcausestheunittomalfunctionandanalarmwillbetriggered.Besuretoconrm
withtheproductcataloguebeforeinstallation.
● JohnsonControlspursuesapolicyofcontinuousimprovementinthedesignandperformanceofproducts
tomeetregulatoryrequirementsandindustrystandards.Therefore,JohnsonControlsreservestheright
torevisespecicationswithoutnotice.
● JohnsonControlscannotanticipateeverypossiblecircumstancethatmightinvolveapotentialhazard.
● Thisheatpumpairconditionerisdesignedforstandardairconditioningapplicationsonly.Donotusethis
heatpumpairconditionerforotherpurposes,suchasdryingclothes,refrigeratingfoods,orforanyother
coolingorheatingprocess.
● Donotinstalltheunitoutdoors.Donotinstalltheunitinthefollowingplaces.Itmaycauseare,
deformation,corrosionorfailure.
*Placeswheretherearehighlevelsofoilmist(includingmachineryoil).
*Placeswheretherearehighalkalinitylevels(i.e.,chlorineorbrominesuchasoverhottubs,etc.).
*Placeswhereammablegasesorliquidsmaybeusedorgenerated.
*Placeswithahighconcentrationofsalts,saltymistsorsprays(suchasoversalt-wateraquariums).
*Placeswithanatmosphereofhighnuisancedust.Placeswithorganicsolventatmospheres,suchas
paintingandcleaninglocations.
● Donotinstalltheunitintheplacewherecondensatewatercanleakontotheunitordamagemayoccur.
● Payattentiontothefollowingpointswhentheunitisinstalledinahospitalorotherfacilitywhere
electromagneticwavesgeneratefrommedicalequipment.
*Donotinstalltheunitinplaceswhereelectromagneticwavesradiatetotheelectricalbox,wiredcontroller
cableorwiredcontroller.
*Installtheunitatleast10ft(3m)awayfromelectromagneticwavesorinterferencessuchasaradio.
● Theinstallerandsystemspecialistshallsecureagainstleakageaccordingtolocalregulationsor
standards.Thissystemhasbothhighandlowpressurerefrigerantand,assuch,comprisesapressurized
system.Neverloosenthreadedjointswhilethesystemisunderpressureandneveropenpressurized
systemparts.
● NopartofthismanualmaybereproducedwithoutwrittenpermissionfromJohnsonControls.
● ItisassumedthatthisunitwillbeoperatedandservicedbyEnglishspeakingpeople.
Ifthisisnotthecase,thedistributorordealercanprovideoraddsafety,cautionandoperatingsignsinthe
nativelanguage.
● Ifyouhaveanyquestions,contactyourdistributor.
Thismanualshouldbeconsideredasapermanentpartoftheairconditioningequipmentandshouldremain
withtheairconditioningequipment.
P5417012-rev.3
iii
SAFETY SUMMARY
SignalWords
● Signalwordsareusedtoidentifylevelsofhazardseriousness.
Denitionsforidentifyinghazardlevelsareprovidedbelowwiththeirrespectivesignalwords.
: DANGERindicatesahazardoussituationwhich,ifnotavoided,
willresultindeathorseriousinjury.
: WARNINGindicatesahazardoussituationwhich,ifnotavoided,
couldresultindeathorseriousinjury.
: CAUTIONusedwiththesafetyalertsymbol,indicatesahazardoussituationwhich,
ifnotavoided,couldresultinminorormoderateinjury.
: NOTICEisusedtoaddresspracticesnotrelatedtopersonalinjury.
: NOTEisusefulinformationforoperationormaintenance.
DANGER
WARNING
CAUTION
NOTICE
NOTE
CHECKING PRODUCT RECEIVED
● Uponreceivingthisproduct,inspectitforanyshippingdamage.
Inspectallelectricalconnections.Connectionsmustbecleanandtightattheterminals.
Claimsfordamageeitherapparentorconcealed,shouldbeledimmediatelywiththeshippingcompany.
NOTE:Roughhandlingmaydislocateinternalcomponents.
● Checkthemodelnumber,electricalcharacteristics(powersupply,voltageandfrequency)andaccessories
todetermineiftheyarecorrectwiththeorderingandshippinginformation,toensurethecorrectunithas
beenshipped.
Tominimizethepossibilityofdamageafterinspection,theunitsshouldbeinstalledassoonaspossible.
Thestandardinstallationandgeneraluseofthisunitisexplainedinthismanual.
Althoughcommonprocessesandproceduresforinstallingunitsarepresentedinthismanual,itsusefor
installationofunitsotherwiseindicatedinthismanualisnotrecommended.Pleasecontactyourlocalagent,
astheoccasionarises.
Ourliabilityshallnotcoverdefectsarisingfromthealterationperformedbyacustomerwithoutourconsentin
awrittenform.
iv
P5417012-rev.3
● Donotperforminstallationwork,refrigerantpipingwork,condensatepump,orcondensatepipingand
electricalwiringconnectionwithoutreferringtotheInstallationManual.Iftheinstructionsarenotfollowed,
itmayresultinawaterleakage,electricshockorare.
● Usethespeciednon-ammablerefrigerant(R410A)fortheoutdoorunitintherefrigerantcycle.
ChargeonlyR410Aintotheunit.Donotchargeothermaterialsintotheunitsuchashydrocarbon
refrigerants(propane),oxygen,ammablegases(acetylene)orpoisonousgaseswheninstalling,
maintainingandmovingtheunit.Theseammablesareextremelydangerousandmaycausean
explosion,are,orinjury.Asoriginallymanufactured,thisunitcontainsrefrigerantinstalledbyJohnson
Controls.JohnsonControlsusesonlyrefrigerantsthathavebeenapprovedforuseintheunit’sintended
countryormarket.JohnsonControls’distributorssimilarlyareonlyauthorizedtoproviderefrigerantsthat
havebeenapprovedforuseinthecountriesormarketstheyserve.Therefrigerantusedinthisunitis
identiedontheunit’sfaceplateand/orintheassociatedmanuals.Anyadditionsofrefrigerantintothis
unitmustcomplywiththecountry’srequirementswithregardtorefrigerantuseandshouldbeobtained
fromJCIdistributors.Useofunapprovedrefrigerantsubstituteswillvoidthewarrantiesandcancause
injuryordeath.
● Donotpourwaterintotheindoororoutdoorunit.Theseunitsareequippedwithelectricalparts.
Exposuretowatermaycauseaseriousinjury.
● DonotopentheservicecoveroraccesspanelfortheindoororoutdoorunitswithoutturningOFFthemain
powersupply.
● Donottouchoradjustsafetydevicesinsidetheindoorunitoroutdoorunits.Ifthesedevicesaretouched
orreadjusted,itmaycauseseriousinjury.
● Carefullycheckforleakingrefrigerantgas.Ifthereissignicantleakage,itcancausedicultyin
breathing.TurnOFFthemainswitch,andcontactyourservicecontractorifrefrigerantleakageoccurs.
● Makesurethattherefrigerantleakagetestisperformed.
Refrigerant(uorocarbon)forthisunitisnon-ammableandodorless.
Howeverrefrigerantthatcomesincontactwithameswillcreatetoxicgas.
Becausetherefrigerantisheavierthanair,theoorsurfacewillbelledwithit,whichcouldcause
suocation.
● Theinstallerandsystemspecialistshallsecureagainstrefrigerantleakageaccordingtolocalregulations
orstandards.
● RecommendedtouseaGroundFaultCircuitInterrupter(GFCI).
Intheeventoffault,thereisdangerofanelectricshockorareifitisnotused.
DANGER
SAFETY SUMMARY
P5417012-rev.3
v
SAFETY SUMMARY
WARNING
● Donotuseanysprayssuchasinsecticide,lacquer,hairsprayorotherammablegaseswithin
approximately4ft(1.3m)ofthesystem.
● Ifthecircuitbreakerorfuseisblown,stopthesystemandcontactyourservicecontractor.
● Electricalshockmayoccurifunitisnotgroundedcorrectly.Ensureasecuregroundconnection.
Donotconnectthegroundwiringtogaspiping,condensatepiping,lightningconductororgroundwiring
fortelephones.
● Beforeperforminganybrazingwork,ensurethereisnoammablematerialaround.
Whenusingrefrigerant,besuretowearproperglovestopreventfrostbite.
● Insulatewiring,condensatepipingandelectricalcomponentsfromextremetemperaturesandburring
animals.Failuretodosocan,overtime,deterioratesystemperformance.
● Formoredetailsoftherefrigerantpipingandheightlimitations,refertotheInstallationandMaintenance
ManualfortheOutdoorUnit.
● Secureallwireconnectionsoutsideforcesontheterminalsmaycausere.Unauthorizedmodicationsto
thisunitareprohibitedforthefollowingreasons:
1. Modicationsmaycreatehazardswhichcouldresultindeath,seriousinjuryorequipmentdamage.
2. Modicationswillvoidproductwarranties.
3. Modicationsmayinvalidateproductregulatorycertications.JohnsonControlsInc.hasconducted
bothinternalandcoordinatedAgencytestingtoensureproductcompliancewithapplicableProductSafety
andRegulatorystandards.Productcerticationisdesignatedeitherontheproductitselforintheproduct
literature.ThecerticationmarkidentiestheapplicablestandardsaswellastheAgencyorNationally
RecognizedTestLab(NRTL)involved.Ifchangesaremadetotheproduct,anengineeringreviewwill
beneededtoassesstheimpacttotheproductcertication.Insomeinstances,thechangesmaybe
suchthattheAgencyorNRTLwillrequirereapprovaloftheproductbymeansofaeldorsiteinspection
andcertication.Anypersonorentitymakingchangestotheproductisresponsibleforobtainingany
necessaryengineeringreviewandreapproval.
4. ModicationsmayviolateOSHAstandards.OSHAstandardsmayrequirethatonlycertiedproducts
beusedincertainapplicationsandmodicationsthatresultinthelossofproductcerticationmayviolate
thoseOSHAstandards:
“IfaproductdoesnothaveNRTLapprovalasrequiredbyanOSHAstandard,oriftheproductnolonger
meetsNRTLapprovalrequirementsbecauseofchangesmadetoit,theproductmustbe
 (1)replacedwithaproperlyapprovedproduct,
(2)approvedbyanNRTLthatisrecognizedfortestingthistypeofproduct,or
(3)reinspectedandreapprovedbyanNRTL,ifitwasproperlyapprovedbuttheuserhaschangedit.”
● Ifinstalledinasmallroom,takemeasurestopreventtherefrigerantfromexceedingthemaximum
allowableconcentrationintheeventthatrefrigerantgasesshouldescape.Theinstallationshouldmeet
requirementsinASHRAEStandards15and34.Ifrefrigerantgashasleakedduringtheinstallationwork,
ventilatetheroomimmediately.
● Tightenthearenutwithatorquewrenchinthespeciedmanner.Donotapplyexcessiveforcetothe
arenutwhentightening.Ifyoudo,thearenutcancrackandrefrigerantleakagemayoccur.
● Whenmaintaining,relocatingordisposingoftheunit,dismantletherefrigerantpipingafterthecompressor
stops.
● Highlydangerouselectricalvoltagesareusedinthissystem.Carefullyrefertothewiringdiagramand
theseinstructionswhenwiring.Improperconnectionsandinadequategroundingcancauseseriousinjury
ordeath.
● PerformallelectricalworkinstrictaccordancewiththisInstallationandMaintenanceManualandall
relevantregulatorystandards.
● Usespeciedcablesbetweenunits.
vi
P5417012-rev.3
NOTICE
● Becarefulthatmoisture,dust,orvariantrefrigerantcompoundsnotentertherefrigerantsystemduring
installationwork.Foreignmattercoulddamageinternalcomponentsorcauseblockages.
● Donotinstalltheindoorunit,outdoorunit,wiredcontrollerandcablewithinapproximately10ft(3m)of
strongelectromagneticwaveradiatorssuchasmedicalequipment.
● Afteralongshutdown,applypowertotheoutdoorunit(s)atleast12hourspriortooperationofthesystem
forpreheatingofthecompressoroil.
NOTE
● Theheatingcapacityoftheheatpumpunitisdecreasedaccordingtotheoutdoorairtemperature.
Therefore,itisrecommendedthatauxiliaryheatingequipmentbeusedintheeldwhentheunitis
installedinalowtemperatureregion.
● Donotstepontheunit.
● Donotputanyforeignmaterialontheunitorinsidetheunit.
● Provideastrongandcorrectfoundationsothat:
●Theoutdoorunitisnotonanincline.
●Abnormalsounddoesnotoccur.
●Theoutdoorunitwillnotfalldownduetoastrongwindorearthquake.
CAUTION
WARNING
● Besuretoinstallcircuitbreakers(groundfaultinterrupter,isolatingswitch,moldedcasecircuitbreaker
andsoon),withthespeciedcapacity.Ensurethatthewiringterminalsaretightenedsecurelyto
recommendedtorquespecications.Ifacircuitbreakerorfuseisfrequentlyblown,shutdownthesystem
andcontactyourservicecontractor.
● Clampelectricalwiressecurelywithacableclampafterallwiringisconnectedtotheterminalblock.
Inaddition,runwiressecurelythroughthewiringaccesschannel.
● Wheninstallingthemainpowerlines,donotapplytensiontothecables.Securethesuspendedcablesat
regularintervalsaccordingtolocalcodes,butnottootightly.
● Afterstoppingoperation,besuretowaitatleastveminutesbeforeturningothemainpowerswitch.
Otherwise,waterleakageorelectricalbreakdownmayresult.Disconnectthepowersupplycompletely
beforeattemptinganymaintenanceforelectricalparts.Checkwithavoltagemetertoensurethatno
residualvoltageispresentafterdisconnectingthepowersupply.
● Insulatetherefrigerantpipeconnectiontopreventcondensation.
● Besuretoattachthecoversothatittssecurelyontheelectricalboxwithoutanygaps.
Securethecoverwithscrews.
● Ensureasecuregroundconnection.Donotconnectgroundwiringtogaspiping,waterpiping,lightning
conductor,ortelephonegroundwiring.Inadequategroundingcancauseanelectricshock.
P5417012-rev.3
vii
TABLE OF CONTENTS
1. SafetySummary .............................................................................................................................................1
2. Structure .........................................................................................................................................................1
2.1 Dimensions .............................................................................................................................................1
2.2 RefrigerationCycle ................................................................................................................................. 3
2.3 NecessaryToolsandInstrumentListforInstallation ..............................................................................4
3. TransportationandHandling ........................................................................................................................... 5
3.1 Transportation ........................................................................................................................................5
3.2 HandlingofChange-OverBox ...............................................................................................................5
3.3 CombinationofChange-OverBoxandIndoorUnit ................................................................................ 5
4. Change-OverBoxInstallation .........................................................................................................................6
4.1 Factory-SuppliedAccessories ................................................................................................................6
4.2 InitialCheck ............................................................................................................................................7
4.3 SuspensionBolts ....................................................................................................................................8
4.3.1 LocationofSuspensionBolts .......................................................................................................8
4.3.2 InstallingSuspensionBolts ........................................................................................................... 8
4.4 Installation ..............................................................................................................................................9
4.4.1 MarkingofthePositionsoftheSuspensionBoltsandWiringConnections .................................9
4.4.2 MountingandHangingtheChange-OverBox .............................................................................. 9
5. RefrigerantPipingWork ................................................................................................................................ 10
5.1 RefrigerantPiping .................................................................................................................................10
5.2 RefrigerantPipingWork .......................................................................................................................12
6. ElectricalWiring ............................................................................................................................................18
6.1 GeneralCheck .....................................................................................................................................18
6.2 ElectricalWiring ....................................................................................................................................19
6.3 ElectricalWiringConnection ................................................................................................................20
6.4 DIPSwitchSetting ................................................................................................................................ 22
7. TestRun ........................................................................................................................................................23
8. SafetyandControlDeviceSetting ................................................................................................................23
viii
P5417012-rev.3
P5417012-rev.3
1
1. Safety Summary
● Do not perform installation work, refrigerant
piping work or electrical wiring connection
without referring to our Installation Manual.
● Check that the ground wire is securely
connected.
● Connect a fuse of specied capacity.
Figure2.1DimensionsofChange-OverBox
2. Structure
2.1 Dimensions
COB04M132B22S
13-3/8 [340]
(For Suspension Bolt)
13/16
[20]
10-1/16 [256]
(For
Suspension Bolt)
1-3/16
[30]
2-5/8
[67]
13-7/8
[352]
21-11/16
[551]
10-1/4
[260]
Electrical Box
1-1/2
[38]
1-1/2
[38]
11-15/16 [303]
4-5/16
[110]
7-13/16
[198]
7-13/16
[199]
3-3/8
[86]
1-5/16
[34]
6-15/16 [176]
1-3/8 [35]
Control Wiring Connection
(φ1 [26])
21-1/4 [540]
Ground Terminal (M5)
(in Electrical Box)
Suspension Bracket
Slotted Hole
7/8 [23]
4 x (1/2 [12] x 1-1/4 [32])
Power Supply Wiring Connection
for Conduit Tube (φ7/8 [22.2])
Specications
Model COB04M132B22S
PowerSupply AC1Phase,208/230V,60Hz
PowerConsumption 11.2W
Refrigerant R410A
NetWeight 31lbs.(14kg)
NumberofBranches
(forIndoorUnit)
4
Unit:inch[mm]
● Do not install the Change-Over Box and cable
within approximately 10 ft (3m) from strong
electromagnetic wave radiators such as
medical equipment.
● For more details of the refrigerant piping and
height limitations, refer to the Installation and
Maintenance Manual for the Outdoor Unit.
2
P5417012-rev.3
Figure2.2DimensionsofChange-OverBox
(For Suspension Bolt)
(For Suspension Bolt)
Control Wiring Connection
(3 x φ1 [26])
Ground Terminal (M5)
(in Electrical Box)
Electrical Box
Power Supply Wiring Connection
for Conduit Tube (φ7/8 [22.2])
2-5/8
[67]
13-7/8
[352]
21-11/16
[551]
10-1/4
[260]
7-13/16
[199]
32-5/16 [820]
13/16
[20]
10-1/16 [256]
1-3/16
[30]
4-5/16
[110]
7-13/16
[198]
1-1/2
[38]
1-1/2
[38]
30-13/16 [783]
40-3/16 [1020]
1-5/16
[34]
1-3/8 [35]
6-15/16
[176]
9-7/16
[240]
9-7/16
[240]
7/8 [23]
3-3/8
[86]
Suspension Bracket
Slotted Hole
4 x (1/2 [12] x 1-1/4 [32])
Specications
Model COB12M264B22S
PowerSupply AC1Phase,208/230V,60Hz
PowerConsumption 33.6W
Refrigerant R410A
NetWeight 80lbs.(36kg)
NumberofBranches
(forIndoorUnit)
12
Unit:inch[mm]
COB08M264B22S
COB12M264B22S
(For Suspension Bolt)
(For Suspension Bolt)
Control Wiring Connection
(2 x φ1 [26])
Ground Terminal (M5)
(in Electrical Box)
Electrical Box
Suspension Bracket
Slotted Hole
4 x (1/2 [12] x 1-1/4 [32])
Power Supply Wiring Connection
for Conduit Tube (φ7/8 [22.2])
2-5/8
[67]
13-7/8
[352]
21-11/16
[551]
10-1/4
[260]
7-13/16
[199]
3-3/8
[86]
22-13/16 [580]
10-1/16 [256]
1-3/16
[30]
13/16
[20]
4-5/16
[110]
7-13/16
[198]
1-1/2
[38]
1-1/2
[38]
21-3/8 [543]
30-11/16 [780]
9-7/16
[240]
6-15/16
[176]
1-3/8 [35]
1-5/16
[34]
7/8 [23]
Specications
Model COB08M264B22S
PowerSupply AC1Phase,208/230V,60Hz
PowerConsumption 22.4W
Refrigerant R410A
NetWeight 56lbs.(25kg)
NumberofBranches
(forIndoorUnit)
8
Unit D
L
GG
L
G
L
G
L
Unit C Unit B Unit A
SSSS
SS
<MVD4>
<MVS4>
<MVD3>
<MVS3>
<MVD2>
<MVS2>
<MVD1>
<MVS1>
L
G (High/Low Pressure)
G (Low Pressure)
Unit H
SSSSSSSS
SS
G (High/Low Pressure)
G (Low Pressure)
L
<MVS1>
<MVD1>
<MVS2>
<MVD2>
<MVS3>
<MVD3>
<MVS4>
<MVD4>
<MVS1>
<MVD1>
<MVS2>
<MVD2>
<MVS3>
<MVD3>
<MVS4>
<MVD4>
L
G
Unit G
L
G
Unit F
L
G
Unit E
L
G
Unit D
L
G
Unit C
L
G
Unit B
L
G
Unit A
L
G
To Indoor Unit
To Indoor Unit To Indoor Unit
To Outdoor Unit
To Outdoor Unit
COB04M132B22S
COB12M264B22S
COB08M264B22S
To Outdoor Unit
S
S
S
Unit L Unit K Unit J Unit I Unit H Unit G Unit F Unit E Unit D Unit C Unit B Unit A
SSSSSSSSSSS
G (High/Low Pressure)
G (Low Pressure)
L
L
G
<MVS1>
<MVD1>
<MVS2>
<MVD2>
<MVS3>
<MVD3>
<MVS4>
<MVD4>
<MVS1>
<MVD1>
<MVS2>
<MVD2>
<MVS3>
<MVD3>
<MVS4>
<MVD4>
<MVS1>
<MVD1>
<MVS2>
<MVD2>
<MVS3>
<MVD3>
<MVS4>
<MVD4>
L
G
L
G
L
G
L
G
L
G
L
G
L
G
L
G
L
G
L
G
L
G
2
1
2
1
1
2
1
2
2
1
2
: Refrigerant Gas Pipe Connection
: Refrigerant Liquid Pipe Connection
: Field Refrigerant Piping
: Flare Connection
: Brazing Connection
: Change-Over Box
G
L
P5417012-rev.3
3
Mark PartName
1
ElectronicExpansionValve
2
Strainer
2.2 RefrigerationCycle
Figure2.3RefrigerationCycleDiagram
4
P5417012-rev.3
2.3 NecessaryToolsandInstrumentListforInstallation
No. Tool No. Tool
1 Handsaw 11 Wrench
2 PhillipsScrewdriver 12 ChargingCylinder
3 VacuumPump 13 ManifoldGauge
4 RefrigerantGasHose 14 WireCutter
5 Megohmmeter 15 GasLeakDetector
6 CopperPipeBender 16 Level
7 ManualWaterPump 17 CrimperforSolderlessTerminals
8 PipeCutter 18 Hoist(forIndoorUnit)
9 BrazingKit 19 Ammeter
10 HexWrench 20 VoltageMeter
NOTE:
Usetoolsandmeasuringinstruments(vacuumpump,refrigeranthose,chargingcylinder,andmanifold
gauge)exclusivelyfortherefrigerantR410A.
P5417012-rev.3
5
3. Transportation and Handling
3.1 Transportation
Transporttheproductasclosetotheinstallation
locationaspracticablebeforeunpacking.
3.3 CombinationofChange-OverBoxandIndoorUnit
Combinationsareasfollows.
Table3.1CombinationsofIndoorUnits
3.2 HandlingofChange-OverBox
Do not put any foreign material into the indoor
unit and check to ensure that none exists in
the Change-Over Box before the installation
and test run. Otherwise, a re or failure, or
something similar may occur.
Do not put any material on the product.
Be careful not to damage insulation materials
of unit’s surface when lifting.
NOTES:
1. Exceedingthetotalcapacitymaycauseinsucientperformanceandabnormalsound.Besureto
connecttheChange-OverBoxwithintheallowabletotalcapacity.
2. Uptotwo60,72or96typeindoorunitscanbeconnectedtothechange-overboxwithinthe“Maximum
TotalCapacityofAllConnectedIndoorUnits”showninabovetable.
Makesuretoincreasethepipeconnectionsizebyusingtheappropriateaccessorypipe.
Model COB04M132B22S COB08M264B22S COB12M264B22S
NumberofBranches(forIndoorUnit) 4 8 12
SingleUnit
PerBranch
MaximumTotalCapacityof
AllConnectedIndoorUnits
132MBHorless 264MBHorless 264MBHorless
MaximumTotalCapacity
ofConnectedIndoorUnits
PerBranch
96MBH
2
orless 96MBH
2
orless 96MBH
2
orless
MultipleUnits
PerBranch
MaximumNumberof
ConnectedIndoorUnits
PerBranch
6 6 6
MaximumTotalCapacityof
AllConnectedIndoorUnits
114MBHorless 216MBHorless 216MBHorless
MaximumTotalCapacity
ofConnectedIndoorUnits
PerBranch
41MBHorless 41MBHorless 41MBHorless
6
P5417012-rev.3
4. Change-Over Box Installation
● Do not install the Change-Over Box in a
ammable environment to avoid re or an
explosion.
4.1 Factory-SuppliedAccessories
Checktoensurethatthefollowingaccessoriesare
packedwiththeChange-OverBox.
Table4.1Factory-SuppliedAccessories
NOTE
● Check to ensure that the ceiling slab is strong
enough.
● Do not install the Change-Over Box outdoors.
If installed outdoors, an electric hazard or
electric leakage may occur.
● Installation WARNING: Ensure that all safety
features, disconnects and interlocks are
in place and functioning properly prior to
putting the equipment into operation. Never
by-pass or jump-out any safety device or
switch.
Ifanyoftheseaccessoriesarenotpackedwiththe
unit,pleasecontactyourdistributor.
inch(mm)
No. Accessory COB04M132B22S Qty. COB08M264B22S Qty. COB12M264B22S Qty.
(1)
Accessory
Pipe
ID
f
1/2(
f
12.7)
Flaring
f
5/8(
f
15.88)
4 8 12
(2)
ID
f
1/4(
f
6.35)
Flaring
f
3/8(
f
9.52)
4 8 12
(3)
ID
f
3/4(
f
19.05)
Flaring
f
5/8(
f
15.88)
Flare Nut
2
Flare Nut
2
Flare Nut
2
(4)
ID
f
7/8(
f
22.2)
Flaring
f
5/8(
f
15.88)
Flare Nut
1
Flare Nut
2
Flare Nut
2
(5)
ID
f
7/8(
f
22.2)
OD
f
1(
f
25.4)
1 - - - -
(6)
ID
f
1-1/8(
f
28.58)
OD
f
1(
f
25.4)
- - - -
1
(7)
Insulation
Material
ID
f
1
(ID
f
26)
4 8 12
(8)
ID
f
1-3/8
(ID
f
35)
4 8 12
(9) Clamp 17 34 51
Unit: inch (mm
Service Space
Service Access Door 1*
Electrical Box
( 17-11/16 (450))
(100)
3-15/16
Service Access Door 3
(50)
1-15/16
Min. 11-13/16
(300)
Upper Side
Bottom Side
Min. A
Min. 3-15/16
(100)
Min.
19-11/16
(500)
Min. 3-15/16
(100)
4-Suspension Bolt
W3/8 or M10
(Field-Supplied)
Service Access Door 2
( 17-11/16 (450))
( 17-11/16 (450))
(50)
(100)
1-15/16
(100)
3-15/16
* Service access door 1 is required for models
P5417012-rev.3
7
4.2 InitialCheck
● InstalltheChange-OverBoxwithaproper
clearancearounditformaintenanceworking
space,asshowninFigure4.1below.
Size
Model
A
COB04M132B22S Min.3-15/16 (100)
COB08M264B22S
Min.15-3/4 (400)
COB12M264B22S
PurposeofEachServiceAccessDoor
Name Purpose
ServiceAccess
Door1
Useduringinspectionofindoorunit
connectingside.
ServiceAccess
Door2
Useduringinspectionofindoorunit
connectingside.
ServiceAccess
Door3
Useduringinspectionofelectrical
componentsinsideelectricalbox.
Figure4.1ServiceSpace
● Checktoensurethattheceilingissuciently
strongtosustaintheChange-OverBox.Ifthe
ceilingisweak,abnormalsoundandvibration
mayoccur.
● Whentheelectronicexpansionvalveinthe
Change-OverBoxisactivated,soundsmaybe
producedfromtheChange-OverBox.Takethe
followingactiontominimizethesound.
(A) InstalltheChange-OverBoxinsidethe
ceiling.Asfortheceilingmaterial,selecta
materiallikeaplasterboardatleast1inch
(9mm),whichminimizesoperationsound.
(B) DonotinstalltheChange-OverBoxina
placenearbedroomsorhospitalrooms.
● Whentheoperationischangedtocooling/
heatingmode,achangeinthetypicalrefrigerant
owsoundsmaybeheardorperceivedfromthe
Change-OverBox.
Therefore,installtheChange-OverBoxinthe
ceilingofthecorridorsothattherefrigerant
owingsoundmaynotbeheardintheroom.
● DonotinstalltheChange-OverBoxinahot
orhumidplace,suchasakitchen,toprevent
condensationontheoutersurfaceofthe
Change-OverBox.
WheninstallingtheChange-OverBoxinsuch
places,applyadditionalinsulation.
● Payattentiontothefollowingpointswhenthe
Change-OverBoxisinstalledinahospitalor
otherfacilitywherethereareelectronicwaves
frommedicalequipment.
(A) DonotinstalltheChange-OverBoxwhere
theelectromagneticwaveisdirectlyradiated
totheelectricalboxorcommunicationcable.
(B) InstalltheChange-OverBoxand
componentsasfaraspracticableoratleast
10ft(3m)fromtheelectromagneticwave
radiator.
(C) Installanoiselterwhenthepowersupply
emitsharmfulnoises.
● Formoredetailsoftherefrigerantpipingand
heightlimitations,refertotheInstallationand
MaintenanceManualfortheOutdoorUnit.
● Ensuretheinstallationplaceisconvenient
fortherefrigerantpipingorelectricalwiring
connection.
● Donotdrill,ordrivescrewsintothecabinet.
Useonlymountingpointsprovided.
● IncasetheChange-OverBoxhastobereplaced
afterinstallation,providealargeenoughservice
doortoaccommodatetheunit.
Unit: inch(mm
)
View from above
(For Suspension Bolt)
A
13/16
(20)
1-3/16
(30)
10-1/16 (256)
For Suspension
Bolt
7-13/16
(198)
4-5/16
(110)
Suspension Bracket
4- 1/2 (12) x 1-1/4 (32)
Slotted Hole
Size
Model
A
COB04M132B22S 13-3/8 (340)
COB08M264B22S 22-13/16 (580)
COB12M264B22S 32-5/16 (820)
1. Reinforcethedesignatedopeninginthefalseceilingarea.Useapprovedmaterialsofsucienttensile
strengthtoallowforqualityinstallation.
2. Strengthensuspensionboltswithsupportplatesasrequiredinpreparationforanearthquake.(Refer
totheSafetySectionformoreinformation.)
Useeld-suppliedM10suspensionboltsandsupportplates.
ForWoodenBeam ForConcreteSlab
Installtheunittothetiebeam(forsingle-storied
building)ortothesecondoorgirder(fortwo-
storiedbuilding),andusesucientlystrongsquared
timberasshownbelow.
inch(mm)
IntervalbetweenBeams SquaredTimber
<35-7/16(900) 2-3/8(60)square
<70-7/8(1800) 3-9/16(90)square
Installsuspensionboltssothatitcanwithstandthe
unitweightload.
5-7/8 to 6-5/16 inch (150 to 160 mm)
Insert
(221 to 331 lbs (100 to 150 kg))
Steel
Concrete
Suspension Bolt
(W3/8 or M10)
8
P5417012-rev.3
4.3 SuspensionBolts
4.3.1 LocationofSuspensionBolts
(1) SelectanallocationandinstallationdirectionoftheChange-OverBox.
Paycarefulattentiontothespaceforthepiping,wiringandmaintenance.
Formoredetailsoftherefrigerantpipingandheightlimitations,refertotheInstallationand
MaintenanceManualfortheOutdoorUnit.
(2) Mountsuspensionbolts.
(3) Contactaqualiedcontractororcarpenterfortheceilingorstructurework.
4.3.2 InstallingSuspensionBolts
Mountsuspensionbolts,asshowninFigure4.3.
Figure4.3MountingofSuspensionBolts
Figure4.2LocationofSuspensionBolts
Suspension Bolt
(Field-Supplied)
Nut (Field-Supplied)
Washer with Insulation
(Field-Supplied)
Suspension Bracket
(Attached Indoor Unit)
Wa
sher (Field-Supplied)
Double-Nut
(Field-Supplied)
1-3/16 to
1-15/16 inc
h
(30 to 50mm)
Suspension Bolt
Suspension Bracket
(Four Places)
P5417012-rev.3
9
4.4 Installation
Figure4.4Suspension
Figure4.5HangingMethod
4.4.2 MountingandHangingtheChange-OverBox
(1) Placenutsandwashersontothesuspension
boltsbeforeinstallingtheChange-OverBox.
NOTE:
Makesuretousewashersforinstallingthe
suspensionboltstothesuspensionbrackets.
Installthewasherwiththeinsulationside
facingdownforsuspendedinstallation
applications.Thisway,thewashers
themselvesremaininpositiononthe
suspensionboltsduringtheinstallation
phase.
Field-SuppliedParts
*SuspensionBolt: 4-W3/8orM10
*Nut: 12-W3/8orM10
*Washer: 4-W3/8orM10
*WasherwithInsulation:4-W3/8orM10
(2) HangingtheChange-OverBox
(a)HangtheChange-OverBoxbyputting
handsonthebottomofthecabinet.
(b) Insertthesuspensionboltintothegroove
partofthesuspensionbracketasshown
inFigure4.5.Ensurethatthewashers
arecorrectlyaxedtothesuspension
bracket.
(c) AfterproperlyinstallingtheChange-
OverBox,ensurethatallpipingand
wiringconnectionsarecorrectbefore
proceeding.
Formoredetailsoftherefrigerant
pipingandheightlimitations,refertothe
InstallationandMaintenanceManualfor
theOutdoorUnit.
(d) KeeptheChange-OverBoxleveltothe
ceilingsurface.IftheChange-OverBoxis
notlevel,amalfunctionmayoccur.
(e) Tightenthenutsofthesuspension
boltwiththesuspensionbracketafter
adjustmentiscompleted.
Adhesivemustbeappliedtothenutsin
ordertopreventthemfromloosening.
4.4.1 MarkingofthePositionsoftheSuspension
BoltsandWiringConnections
(1) Markthepositionsofthesuspensionbolts,
refrigerantpipingconnectionsandwiring
connection.
(2) Installationdimensionsareshownin
Figure2.1and2.2.
When installing pipe through
the wall, secure a cap at the
end of the pipe.
Correct
CorrectIncorrect Incorrect
Correct Incorrect
HoleHole
Attach a cap
or vinyl tape.
Attach a cap
or vinyl tape.
Attach a cap
or vinyl bag with
rubber band.
Do not place the pipe
directly on the ground.
Rain water can
enter.
1/64 ~ 1/32R
A
d
90
o
+
2
o
45
o
+
2
o
10
P5417012-rev.3
Use the specied non-ammable refrigerant
(R410A) for the outdoor unit in the refrigerant
cycle. Do not charge material other than
R410A into the unit such as hydrocarbon
refrigerants (propane or something similar),
oxygen, ammable gases (acetylene or etc.) or
poisonous gases when installing, maintaining
and moving. These ammables are extremely
dangerous and may cause an explosion, a re,
and injury.
● FlaringDimension
Performthearingworkasshownbelow.
(
T
)Ifitisnotpossibletoformthecorrect
arewith3/4inchmaterialthenuse
anaccessorypipe(withaare).
5.1 RefrigerantPiping
● Cautions for Refrigerant Pipe Work (Example)
(1) Preparelocally-suppliedcopperpipes.
(2) Selectcleancoppertubesmakingsurethere
isnodustormoistureinsidethetubes.
Beforeconnectingpipes,blowtheinsideof
thetubeswithnitrogenordryair,toremove
anydustorforeignmaterials.
(3) Selectthepipingsizeasshowninthetables
below.Furthermore,checkfortheare
nutandaringdimensionaccordingtothe
followinggureandtable.
5. Refrigerant Piping Work
NOTE:
Donotuseacoppercouplingotherthanthose
speciedinthetableabove.
B
Flare Nut
inch(mm)
Diameter
(ɸd)
A
+0
-0.02(-0.4)
R410A
1/4 (6.35) 0.36 (9.1)
3/8 (9.52) 0.52 (13.2)
1/2 (12.7) 0.65 (16.6)
5/8 (15.88) 0.78 (19.7)
3/4 (19.05) (
T
)
MinimumThickness
inch(mm)
Diameter R410A
1/4 (6.35) 0.020 (0.5)
3/8 (9.52) 0.024 (0.6)
1/2 (12.7) 0.028 (0.7)
5/8 (15.88) 0.031 (0.8)
3/4 (19.05) 0.031 (0.8)
7/8 (22.2) 0.035 (0.9)
1-1/8 (28.58) 0.039 (1.0)
1-5/8 (41.28) 0.057 (1.45)
FlareNutDimensionB
inch(mm)
Diameter R410A
1/4 (6.35) 11/16 (17)
3/8 (9.52) 7/8 (22)
1/2 (12.7) 1 (26)
5/8 (15.88) 1-1/8 (29)
3/4 (19.05) 1-7/16 (36)
For more details of the refrigerant piping and
height limitations, refer to the Installation and
Maintenance Manual for the Outdoor Unit.
● CopperCouplingSelection
Ifhardtemperpipeisused,thearingwork
cannotbeperformed.Inthiscase,useacopper
couplingselectedfromthetablebelow.
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36

York VRF Multi-Port Change-Over Box – 12 Ports Installation guide

York
Brand
York
Model
VRF Multi-Port Change-Over Box – 12 Ports
Category
Split-system air conditioners
Type
Installation guide
This manual is also suitable for
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents