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• Afterinstallationhasbeencompleted,checkforrefrigerantleaks.Ifrefriger-
ant leaks into the room and comes into contact with the flame of a heater or
portablecookingrange,poisonousgaseswillbereleased.
• Donotusemeanstoacceleratethedefrostingprocessortoclean,other
thanthoserecommendedbythemanufacturer.
• Theapplianceshallbestoredinaroomwithoutcontinuouslyoperatingigni-
tionsources(forexample:openflames,anoperatinggasapplianceoran
operating electric heater).
• Donotpierceorburn.
• Be aware that refrigerants may not contain an odour.
/Pipe-workshallbeprotectedfromphysicaldamage.
• Theinstallationofpipe-workshallbekepttoaminimum.
• Compliancewithnationalgasregulationsshallbeobserved.
• Keepanyrequiredventilationopeningsclearofobstruction.
/Donotuselowtemperaturesolderalloyincaseofbrazingtherefrigerant
pipes.
/Whenperformingbrazingwork,besuretoventilatetheroomsufficiently.
Makesurethattherearenohazardousorflammablematerialsnearby.
When performing the work in a closed room, small room, or similar location,
makesurethattherearenorefrigerantleaksbeforeperformingthework.
If refrigerant leaks and accumulates, it may ignite or poisonous gases may
bereleased.
/Theapplianceshallbestoredinawell-ventilatedareawheretheroomsize
corresponds to the room area as specified for operation.
/Keepgas-burningappliances,electricheaters,andotherfiresources(igni-
tion sources) away from the location where installation, repair, and other air
conditionerworkwillbeperformed.
Ifrefrigerantcomesintocontactwithaflame,poisonousgaseswillbe
released.
/Donotsmokeduringworkandtransportation.
1. Safety precautions
1.1. Before installation
Caution:
• Donotusetheunitinanunusualenvironment.Iftheairconditionerisin-
stalledin areas exposed to steam, volatile oil (includingmachine oil), or
sulfuric gas, areas exposed to high salt content such as the seaside, or
areaswheretheunitwillbecoveredbysnow,theperformancecanbesig-
nicantlyreducedandtheinternalpartscanbedamaged.
• Do not install the unit where combustible gases may leak, be produced,
ow,oraccumulate.Ifcombustiblegasaccumulatesaroundtheunit,reor
explosionmayresult.
•The outdoor unit produces condensation during the heating operation.
Makesuretoprovidedrainagearoundtheoutdoorunitifsuchcondensa-
tion is likely to cause damage.
• Wheninstallingtheunitinahospitalorcommunicationsofce,beprepared
for noise and electronic interference. Inverters, home appliances, high-
frequency medical equipment, and radio communications equipment can
causetheairconditionertomalfunctionorbreakdown.Theairconditioner
mayalsoaffectmedicalequipment,disturbingmedicalcare,andcommuni-
cations equipment, harming the screen display quality.
1.2.Beforeinstallation(relocation)
Caution:
• Beextremelycarefulwhentransportingorinstallingtheunits.Twoormore
personsareneededtohandletheunit,asitweighs20kgormore.Donot
graspthepackagingbands.Wearprotectiveglovestoremovetheunitfrom
thepackagingandtomoveit,asyoucaninjureyourhandsonthensor
the edge of other parts.
• Besuretosafelydisposeofthepackagingmaterials.Packagingmaterials,
suchasnailsandothermetalorwoodenpartsmaycausestabsorother
injuries.
• Thebaseandattachmentsoftheoutdoorunitmustbeperiodicallychecked
for looseness, cracks or other damage. If such defects are left uncorrected,
the unit may fall down and cause damage or injuries.
• Donotcleantheairconditionerunitwithwater.Electricshockmayresult.
• Tightenallarenutstospecicationusingatorquewrench.Iftightenedtoo
much,thearenutcanbreakafteranextendedperiodandrefrigerantcan
leak out.
1.3.Beforeelectricwork
Caution:
• Besuretoinstallcircuitbreakers.Ifnotinstalled,electricshockmayresult.
• Forthepowerlines,usestandardcablesofsufcientcapacity.Otherwise,
ashortcircuit,overheating,orremayresult.
• Wheninstallingthepowerlines,donotapplytensiontothecables.Ifthe
connectionsareloosened,thecablescansnaporbreakandoverheatingor
remayresult.
• Besuretogroundtheunit.Donotconnectthegroundwiretogasorwater
pipes, lightning rods, or telephone grounding lines. If the unit is not prop-
erly grounded, electric shock may result.
• Use circuit breakers (ground fault interrupter, isolating switch (+B fuse),
andmoldedcasecircuitbreaker)withthespeciedcapacity.Ifthecircuit
breaker capacity is larger than the specied capacity, breakdown or re
may result.
1.4.Beforestartingthetestrun
Caution:
• Turnonthemainpowerswitchmorethan12hoursbeforestartingopera-
tion.Startingoperationjustafterturningonthepowerswitchcanseverely
damage the internal parts. Keep the main power switch turned on during the
operation season.
• Beforestartingoperation,checkthatallpanels,guardsandotherprotective
partsarecorrectlyinstalled.Rotating,hot,orhighvoltagepartscancause
injuries.
• Donottouchanyswitchwithwethands.Electricshockmayresult.
• Donottouchtherefrigerantpipeswithbarehandsduringoperation.The
refrigerantpipesarehotorcolddependingontheconditionoftheowing
refrigerant.Ifyoutouchthepipes,burnsorfrostbitemayresult.
• Afterstoppingoperation,besuretowaitatleastveminutesbeforeturn-
ingoffthemainpowerswitch.Otherwise,waterleakageorbreakdownmay
result.
1.5.UsingR32refrigerantairconditioners
Caution:
• Use C1220 copper phosphorus, for copper and copper alloy seamless
pipes,toconnecttherefrigerantpipes.Makesuretheinsidesofthepipes
are clean and do not contain any harmful contaminants such as sulfuric
compounds,oxidants,debris,ordust.Usepipeswiththespeciedthick-
ness.(Referto4.1.)Notethefollowingifreusingexistingpipesthatcarried
R22refrigerant.
- Replace the existing are nuts and are the ared sections again.
- Do not use thin pipes. (Refer to 4.1.)
• Storethepipestobeusedduringinstallationindoorsandkeepbothends
of the pipes sealed until just before brazing. (Leave elbow joints, etc. in
theirpackaging.)Ifdust,debris,ormoistureenterstherefrigerantlines,oil
deteriorationorcompressorbreakdownmayresult.
• Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigeration
oilappliedtothearedsections.Ifmineraloilismixedintherefrigeration
oil, oil deterioration may result.
• Servicingshallbeperformedonlyasrecommendedbythemanufacturer.
• DonotuserefrigerantotherthanR32refrigerant.Ifanotherrefrigerantis
used, the chlorine will cause the oil to deteriorate.
• UsethefollowingtoolsspecicallydesignedforusewithR32refrigerant.
ThefollowingtoolsarenecessarytouseR32refrigerant.Contactyournear-
est dealer for any questions.
Tools (for R32)
Gauge manifold Flare tool
Charge hose Size adjustment gauge
Gas leak detector Vacuum pump adapter
Torque wrench Electronic refrigerant charging scale
• Besuretousethecorrecttools.Ifdust,debris,ormoistureenterstherefrig-
erant lines, refrigeration oil deterioration may result.
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