Hitachi UTOPIA IVX STANDARD Series User Manual

ENGLISH
10.3.2 Wire size

Connection wiring
Recommended minimum sizes for eld provided wires:
Model Power supply
Power source
cable size
Transmitting
cable size
EN60 335-1 EN60 335-1
All Indoor Units
1~ 230V 50Hz
0.75 mm²
0.75 mm²RAS-(4-6)HVNC1E 6.0 mm
2
RAS-(4-6)HNC1E 3N~ 400V 50Hz 4 mm
2
? NOTE
• Followlocalcodesandregulationswhenselectingeldwires,Circuit
breakersandEarthLeakagebreakers
• Usethewireswhicharenotlighterthantheordinarypolychloroprene
sheathedexiblecord(codedesignationH05RN-F)

Main switch protection
Select the main switches in according to the next table:
Model Power supply
Max.
current
(A)
CB
(A)
ELB
(nº poles/A/mA)
All Indoor
Units
1~ 230V 50Hz 5.0 6 2/40/30
ELB: Earth switch; CB: Circuit braker
Outdoor unit MC (A) CB (A) ELB
RAS-4HVNC1E 28.5 32
2/40/30RAS-5HVNC1E 28.5 32
RAS-6HVNC1E 28.5 32
RAS-4HNC1E 15.5 20
4/40/30RAS-5HNC1E 15.5 20
RAS-6HNC1E 15.5 20
11 COMMMISSIONING
When installation is completed, perform test run according to the following procedure, and hand over the system to the customer.
Perform test run regarding indoor units one by one in order, and conrm that the electrical wiring and the refrigerant piping are
correctly connected.
Test run should be performed according to the “11.1TestRunprocedurebyRemoteControlSwitch(PC-ARTexample)” on next
page.
! CAUTION
Donotoperatethesystemuntilallthecheckpointshavebeencleared:
• Checkto ensurethat the electrical resistance ismore than1 MΩ,
bymeasuringtheresistancebetweengroundandtheterminalofthe
electricalparts.Ifnot,donotoperatethesystemuntiltheelectrical
leakage is found and repaired. Do not impress the voltage on the
terminalsfortransmission1and2.
• Check to ensure that the stop valves of the outdoor unit are fully
opened,andthenstartthesystem.
• Checktoensurethattheswitchonthemainpowersourcehasbeen
ONformorethan12hours,to warm the compressor oil bythe oil
heater
Payattentiontothefollowingitemswhilethesystemisrunning:
• Do not touch any of the parts by hand at the discharge gas side,
sincethecompressorchamberandthepipesatthedischargeside
areheatedhigherthan90°C.
• DONOTPUSHTHEBUTTONOFTHEMAGNETICSWITCH(ES),it
willcauseaseriousaccident.
• Donottouchanyelectricalcomponentsformorethanthreeminutes
afterturningOFFthemainswitch
• Conrmthatthegaslinestopvalveandtheliquidlinestopvalveare
fullyopen.
• Conrmthattheleakageoftherefrigerantdoesnotexist.Theare
nutsaresometimesloosenedbyvibrationduringtransportation.
• Checkthattherefrigerantpipingandtheelectricalwiringconformto
thesamesystem.
• Conrmthatthedipswitchsettingontheprintedcircuitboardofthe
indoorunitsandtheoutdoorunitsarecorrect.
• Checkwhetherornottheelectricalwiringoftheindoorunitsandthe
outdoor units are connected as shown in the chapter “10 Electric
wiring”.
! CAUTION
Conrmthateld-suppliedelectricalcomponents(mainswitchfuse,fuse-
freebreaker,earthleakagebreakers,wires,conduitconnectorsandwire
terminals)have beenproperlyselectedaccordingtothe electricaldata
givenintheTechnicalCatalogoftheunitandensurethatthecomponents
complywithnationalandlocalcodes.
? NOTE
• Fortwin,tripleandquadchecktheindoorunitoutletairtemperature
attestrun.Ifthetemperaturedifferenceislarge(aprox.10deg.or
more (cooling) 20 deg. or more (heating) recheck the refrigerant
piping,Installationmayhavesomeproblem.
• Inthecaseofanualcoolingoptional function, cut JP1 outand set
theDSW6-1toOFF.(Individualcontrolisnotavailablewhenanual
coolingisselected).
COMMMISSIONING
PMML0395B rev.0 - 11/2015
17

Hitachi UTOPIA IVX STANDARD Series Specifications

General

Brand	Hitachi
Model	UTOPIA IVX STANDARD Series
Category	Air Conditioner
Language	English