Hitachi RCI-4.0FSR - Setting of DIP Switches and RSW Switches

3 Electrical and control settings
Unit electrical wiring and connection
SMGB0137 rev.0 - 05/2021
49
3
3.1.7 Electrical connection of RPK units
Work prior to the electrical connection
1 Turno󰀨thepowersupplyswitchesbeforestartingworkandttheappropriatelocksandsafetywarnings.
2 Wait5minutesafterturningo󰀨thepowersupplyswitches.
3 Checkthatthefansontheindoorandoutdoorunitsareatastandstillbeforestartingwork.
? NOTE
• Theelectricalpowerfortheunitmustinvolveaspecicpowerline,withanexclusivepowercontrolswitchandresidualcurrentbreaker,
installed in line with local or national safety regulations.
• Checkthattheelectricalpowerlinehasenoughcapacitytosupplytheunit.Itslength,thecablediameterandtheirprotection(sleeve
orjacket)mustbeappropriatefortheunit.
• Forfurtherinformation,alwaysconsiderthecurrentregulationsinthecountrywheretheunitistobeinstalled.
! CAUTION
• Riskofre:cablesmustnevertouchtherefrigerantpipes,printedcircuitboards(PCB),sharpedgesorelectricalcomponentsinside
the unit to avoid damaging them.
• Looseconnectionterminalsmayleadtocableandterminaloverheating.Theunitmayoperateincorrectly,leadingtoariskofre.
Checkthatthecablesarermlysecuredtotheconnectionterminals.
Electrical connection
! CAUTION
• Makesurethattheeld-selectedelectricalcomponents(mainpowerswitches,circuitbreakers,wires,conduitconnectorsandwire
terminals)havebeenproperlyselectedaccordingtotheelectricaldatagivenin“TechnicalCatalogue”.Makesurethatthecomponents
complywithNationalElectricalCode(NEC).
• Usetheshieldedtwistpaircableforthecontrolcablebetweentheoutdoorunitandtheindoorunit,thecontrolcablebetweenindoor
unitsandtheremotecontrolswitchcableofPC-ARFP1E.
• Checktoensurethatthepowersupplyvoltageis230V.
• Checkthecapacityoftheelectricalwires.Ifthepowersourcecapacityistoolow,thesystemcannotbestartedduetothevoltagedrop.
• Checktoensurethattheearthwireisconnected.
The electrical wiring capacity of the outdoor unit should be referred according to “Installation & Operation Manual” of the
outdoor unit. Setting DIP switch may be required depending on the combination with the outdoor unit.
1 Connect the power source cables (L1 and N (L2) phases (1~ 220-240V 50/60Hz)) to the terminal board correctly.
AB 12
L1
(Mp)
N
TB
2
TB1
L1
TB
1
L2
Remote
Control
Transmission
wires (H-LINK)
Power source line
3-Phase4Wires:L1,N
Power source line
3-Phase3Wires:L1,L2
2 Connectthecontrolcablesbetweentheindoorunitandtheoutdoorunitcorrectly.Checktoensurethattheterminal
for power source cable (Terminals “L1” to “L1” and “N(L2)” to “N(L2)” of each terminal board (1~ 220-240V 50/60Hz))
between the indoor unit and the outdoor unit coincide correctly. If not, some component will be damaged.