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3
GB
1. Safetyprecautions
1.3. Beforeelectricwork
Caution:
• Besuretoinstallcircuitbreakers.Ifnotinstalled,electricshockmayresult.
• Forthepowerlines,usestandardcablesofsufcientcapacity.Otherwise,a
shortcircuit,overheating,orremayresult.
• Wheninstalling the powerlines,do notapplytension tothecables. Ifthe
connectionsareloosened,thecablescansnaporbreakandoverheatingor
remayresult.
1.4. Beforestartingthetestrun
Caution:
• Turnonthemainpowerswitchmorethan12hoursbeforestartingoperation.
Startingoperationjustafterturningonthepowerswitchcanseverelydamage
theinternalparts.Keepthemainpowerswitchturnedonduringtheoperation
season.
• Beforestartingoperation,checkthatallpanels,guardsandotherprotective
partsarecorrectlyinstalled.Rotating,hot,orhighvoltagepartscancause
injuries.
• Donottouchanyswitchwithwethands.Electricshockmayresult.
• Besuretogroundtheunit.Donotconnectthegroundwiretogasorwater
pipes,lightningrods,ortelephonegroundinglines.Iftheunitisnotproperly
grounded,electricshockmayresult.
• Usecircuitbreakers(groundfaultinterrupter,isolatingswitch(+Bfuse),and
moldedcasecircuitbreaker)withthespeciedcapacity.Ifthecircuitbreaker
capacityislargerthanthespeciedcapacity,breakdownorremayresult.
• Do not touch the refrigerant pipes with bare hands during operation. The
refrigerantpipesarehotorcolddependingontheconditionoftheowing
refrigerant.Ifyoutouchthepipes,burnsorfrostbitemayresult.
• Afterstoppingoperation,besuretowaitatleastveminutesbeforeturning
offthemainpowerswitch.Otherwise,waterleakageorbreakdownmayresult.
1.5. UsingR410Arefrigerantairconditioners
Caution:
• UseC1220copperphosphorus,forcopperandcopperalloyseamlesspipes,
toconnecttherefrigerantpipes.Makesuretheinsidesofthepipesareclean
anddonotcontainanyharmfulcontaminantssuchassulfuriccompounds,
oxidants,debris,ordust.Usepipeswiththespeciedthickness.(Referto
4.1.)NotethefollowingifreusingexistingpipesthatcarriedR22refrigerant.
- Replacetheexistingarenutsandarethearedsectionsagain.
- Do not use thin pipes. (Refer to 4.1.)
• Storethepipestobeusedduringinstallationindoorsandkeepbothendsof
thepipessealeduntiljustbeforebrazing.(Leaveelbowjoints,etc.intheir
packaging.)Ifdust,debris,ormoistureenterstherefrigerantlines,oildete-
riorationorcompressorbreakdownmayresult.
• Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigeration
oilappliedtothearedsections.Ifmineraloilismixedintherefrigeration
oil,oildeteriorationmayresult.
• DonotuserefrigerantotherthanR410Arefrigerant.Ifanotherrefrigerantis
used,thechlorinewillcausetheoiltodeteriorate.
• UsethefollowingtoolsspecicallydesignedforusewithR410Arefrigerant.
The following tools are necessary to use R410Arefrigerant. Contact your
nearestdealerforanyquestions.
Tools (for R410A)
Gauge manifold Flare tool
Charge hose Size adjustment gauge
Gas leak detector Vacuum pump adapter
Torque wrench Electronic refrigerant charging scale
• Besuretousethecorrecttools.Ifdust,debris,ormoistureenterstherefriger-
antlines,refrigerationoildeteriorationmayresult.
• Donotuseachargingcylinder.Ifachargingcylinderisused,thecomposition
oftherefrigerantwillchangeandtheefciencywillbelowered.
1.2. Beforeinstallation(relocation)
Caution:
• Beextremelycarefulwhentransportingtheunits.Twoormorepersonsare
neededtohandletheunit,asitweighs20kgormore.Donotgraspthepack-
agingbands.Wearprotectiveglovestoremovetheunitfromthepackaging
andtomoveit,asyoucaninjureyourhandsonthensorotherparts.
• Besuretosafelydisposeofthepackagingmaterials.Packagingmaterials,such
asnailsandothermetalorwoodenpartsmaycausestabsorotherinjuries.
• Thebaseandattachmentsoftheoutdoorunitmustbeperiodicallychecked
forlooseness,cracksorotherdamage.Ifsuchdefectsareleftuncorrected,
theunitmayfalldownandcausedamageorinjuries.
• Donotcleantheairconditionerunitwithwater.Electricshockmayresult.
• Tightenallarenutstospecicationusingatorquewrench.Iftightenedtoo
much,thearenutcanbreakafteranextendedperiodandrefrigerantcan
leakout.
1.1. Beforeinstallation
Caution:
• Donotusetheunitinanunusualenvironment.Iftheairconditionerisinstalled
inareasexposedtosteam,volatileoil(includingmachineoil),orsulfuricgas,
areasexposedtohighsaltcontentsuchastheseaside,orareaswherethe
unitwillbecoveredbysnow,theperformancecanbesignicantlyreduced
andtheinternalpartscanbedamaged.
• Donotinstalltheunitwherecombustiblegasesmayleak,beproduced,ow,
oraccumulate.Ifcombustiblegasaccumulatesaroundtheunit,reorexplo-
sionmayresult.
• Theoutdoorunitproducescondensationduringtheheatingoperation.Make
suretoprovidedrainagearoundtheoutdoorunitifsuchcondensationislikely
tocausedamage.
• Wheninstallingtheunitinahospitalorcommunicationsofce,bepreparedfor
noiseandelectronicinterference.Inverters,homeappliances,high-frequency
medicalequipment,andradiocommunicationsequipmentcancausetheair
conditionertomalfunctionorbreakdown.Theairconditionermayalsoaffect
medicalequipment,disturbingmedicalcare,andcommunicationsequipment,
harmingthescreendisplayquality.
RG79Y960H01.indb 3 2018/02/09 14:30:58
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