Hitachi RAS-8-FSNM - Important Notice

ENGLISH
3 IMPORTANT NOTICE
• The supplementary information about the purchased products is
suppliedinaCD-ROM,whichcanbefoundbundledwiththeoutdoor
unit.IncasethattheCD-ROMismissingoritisnotreadable,please
contactyourHitachidealerordistributor.
• PLEASEREADTHEMANUALANDTHEFILESONTHECD-ROM
CAREFULLYBEFORESTARTINGWORKONTHEINSTALLATION
OF THE AIR CONDITIONING SYSTEM. Failure to observe the
instructions for installation, use and operation described in this
documentation may result in operating failure including potentially
seriousfaults,oreventhedestructionoftheairconditioningsystem.
• Verify,inaccordancewiththemanualswhichappearintheoutdoor
and indoor units, that all the information required for the correct
installationofthesystemisincluded.Ifthisisnotthecase,contact
yourdistributor.
• HITACHIpursuesapolicyofcontinuingimprovementindesignand
performance of products. The right is therefore reserved to vary
specicationswithoutnotice.
• HITACHI cannotanticipate every possiblecircumstance that might
involveapotentialhazard.
• Thisairconditionerhasbeendesignedforstandardairconditioning
forhumanbeingsonly.Donotusethisforotherpurposessuchasfor
dryingclothes,refrigeratingfoodsorforanyothercoolingoheating
process.
• Nopartofthismanualmaybereproducedwithoutwrittenpermission.
• Ifyouhaveanyquestions,contactyourservicecontractorofHITACHI.
• Check and make sure that the explanations of each part of this
manualcorrespondtoyourairconditionermodel.
• Refer to the models codication (page 1) to conrm the main
characteristicsofyoursystem.
• Signalwords(NOTE,DANGERandCAUTION)areusedtoidentify
levelsofhazardseriousness.Denitionsforidentifyinghazardlevels
areprovidedinpreviouspages.
• Theoperationmodesarecontrolledbytheremotecontrolswitch.
• This manualshould be considered as a permanentpart of the air
conditioner.Thismanualgivesacommondescriptionandinformation
forthisairconditionerwhichyouoperateaswellasforothermodels.
! DANGER
• PressureVesselandSafetyDevice:Thisairconditioneris
equippedwithahighpressurevesselunderPED(Pressure
EquipmentDirective).
• Thepressurevesselhasbeendesignedandtestedbefore
shipmentaccordingtoPED.Also,inordertopreventthe
systemfromanabnormalpressure,ahighpressureswitch,
whichneedsnoeldadjustment,isutilizedintherefrigeration
system.
• Therefore,thisairconditionerisprotectedfromabnormal
pressures.However,ifabnormallyhighpressureisappliedto
therefrigerationcycleincludingthehighpressurevessel(s),
itwillresultinseriousinjuryordeathduetoexplosionofthe
pressurevessel.
• Donotapplyapressurehigherthanthefollowingpressure
tothesystem,bymodifyingorchangingthehighpressure
switch.
! CAUTION
This unit is designed for commercial and light industrial application.
If installed in house hold appliance, it could cause electromagnetic
interference.
Start-up and Operation: Check to ensure that all the stop valves are fully opened and no obstacle exists at the inlet/outlet sides
before start-up and during the operation.
Maintenance: Periodically check the high pressure side pressure. If the pressure is higher than the maximum allowable pressure,
stop the system and clean the heat exchanger or remove the cause.
Maximum Allowable Pressure and High Pressure Cut-out Value:
Refrigerant Maximun Allowable Pressure (MPa) High Pressure Switch Cut-out Value (MPa)
R410A 4.15 4.00 ~ 4.10
? NOTE
ThelabelforthevesselunderPEDareattachedonthehighpressure
vessel.Thepressurevesselcapacityandvesselcategoryareindicated
onthevessel.
Accumulator
Compressor
Location of High Pressure Switch
? NOTE
Thehighpressureswitchisindicatedontheelectricalwiringdiagramin
theoutdoorunitasPSHconnectedtoprintedcircuitboard(PCB1)inthe
outdoorunit
Structure of High Pressure Switch
Contact point
Pressure detected
Connected to the electrical wire
! DANGER
• Donotchangethehigh-pressureswitchlocallyorchangethehighpressurecut-outsetvaluelocally.Ifchanged,itwillcauseserious
injuryordeathduetoexplosion.
• Donotattempttoturnservicevalverodbeyonditsstop.
IMPORTANT NOTICE
PMML0390B REV.0 - 11/2015 - P5416649
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