
■ Howtowirlng
△!
CAUT10N
<BaSicwiringdiagram>
Central
COntrOller
When
COnneCtingto
MMYoutdoor
units
Ensurethatwiringconnectionsarecorrect.(lncorrectwiringwilI
damagetheequipment.)
Howtowirethecentralcontroller
lnordertoensuresafety,turnOfftheairconditionerpowerbeforemountingor
removingthecetralcontroer.
.Connectthecommunicationwirestotheindoor/Outdoorunitconnecting
WiresorcentraEcontroIsystemwires.
.UsethefoI10WlngaSthecommunicationvvires.
TotalwireEengthoflessthanl.000meters:MVVS1,25mm2
TotalwirelengthoHessthan2,000meters:MVVS2.0mm2
ThetotaFwirelengthisobtainedbyaddingthelengthsoftheindoor/Outdoor
unitconnectingwirestothelengthsofthecentralcontroIsystemwires.
・ DonotrunthecommunicationwiresinsidethesameelectricaEwireconduits
asthepowercables,COnneCtthemus■ngSimitarwiresoraLLowthemtobe
routed nearotherwires.
・Forthecommunicationwires,USeS.gnalwiresthatvisuayidentifythemas
beingdifferentfromeithertheremotecontrollerwiresorthepowercables.
・ConnectthepowercableofthecentralcontrolJertotheAC220−240Vpower
SOurCe・(lncorrPCtWiringwidamagetheequipment・)
・ConnectthewIreSinsuchawaythatnoneofthewireswillbeconnected
incorrectly.(lncorrectwjringwiEldamagetheequipment.)
Connectthecommunicationwiresoftheairconditionersshownwhichisthe
Wiringempl0yedwhenuslngCentraLcontro=sused.
・ Themaximum numberofairconditionerswhichcan beconnectedinone
CentralcontroIsystemis64indoorunitsand160utdoorunits(CenterUnits).
(WithSuperModularMultisystem)
・UptotencentralcontroersincludingothercentralcontroIunitscanbe
COnneCted.
Refrigerant
SySteml
(MMY)
CenlraacontroIsyslemwire
MMO:S岬erMod山arMu】tHndoorUnitmodelname・
(MMU.MMD,MMC,MMLMMKandMMF)
RAVshowsDlandSDl,
1:1Moderconnectionjnterface:TCB・PCNT30TLE*
【喪司
8
Refrigerant
SyStem2
(MMY)
lndoor/0日tdoorunit h1:1Modelh
COnneCtingwire conneCtioninterface
Whenconnectingto
MMOindoorunits
Refrigerant
SyStem3(RAV)
Central
COntrO=er
WhenconnectingacentraI
COntrOLlerforRAVseries
indoorunit(exceptKRT),
addlhe1:1Moder
COnneCtioninterfaceon
indoorunit.
Fig.4
・WhenconnectingtoMMYoutdoorunits,maketheconnectiontothe
CentralcontroIsystemwires(∪3andU4terminaIs)・
● WhenconnectjngtoMMOindoorunits,maketheconnectiontotheindoor/
Outdoorunitconnectingwire(UlandU2terminaIs)・
・WhenconnectingtoaRAVairconditioner,maketheconnectiontotheU3
andU4terminals.
.Thel:1ModeJConnectioninterfaceisrequiredfortheRAVair
COnditioner.(exceptKRTseries・)
・AgeneraL−PurPOSeUnitcontro=nterfaceisrequiredwithsomeair
COnditionermode‡S_