Indoor Installation Manual

2
►Before installing the unit, make sure you read all the “Safety precautions”.
►Please report to your supply authority or obtain their consent before
connecting this equipment to the power supply system.
Warning:
Describes precautions that must be observed to prevent danger of injury or
death to the user.
Caution:
Describes precautions that must be observed to prevent damage to the unit.
Contents
1. Safety precautions .....................................................................................2
2. Installation location ....................................................................................3
3. Installing the indoor unit ............................................................................3
4. Installing the refrigerant piping ..................................................................5
5. Drainage piping work .................................................................................6
6. Electrical work ...........................................................................................7
7. Test run ....................................................................................................12
8. System control ........................................................................................15
9. Installing the grille ....................................................................................16
10. Easy maintenance function .....................................................................18
1. Safety precautions
After installation work has been completed, explain the “Safety Precautions,” use, and
maintenance of the unit to the customer according to the information in the Operation
Manual and perform the test run to ensure normal operation. Both the Installation
Manual and Operation Manual must be given to the user for keeping. These manuals
must be passed on to subsequent users.
: Indicates a part which must be grounded.
Warning:
Carefullyreadthelabelsafxedtothemainunit.
Warning:
• Askadealeroranauthorizedtechniciantoinstalltheunit.
• Theusershouldneverattempttorepairtheunitortransferittoanotherlocation.
• Forinstallationwork,followtheinstructionsintheInstallationManualanduse
toolsandpipecomponentsspecicallymadeforusewithrefrigerantspecied
in the outdoor unit installation manual.
• Theunitmustbeinstalledaccordingtotheinstructionsinordertominimize
the risk of damage from earthquakes, typhoons, or strong winds. An incorrectly
installed unit may fall down and cause damage or injuries.
• Theunitmustbesecurelyinstalledonastructurethatcansustainitsweight.
• Iftheairconditionerisinstalledinasmallroom,measuresmustbetakento
preventtherefrigerantconcentrationintheroomfromexceedingthesafetylimit
in the event of refrigerant leakage. Should the refrigerant leak and cause the
concentrationlimittobeexceeded,hazardsduetolackofoxygenintheroom
may result.
• Ventilatetheroomifrefrigerantleaksduringoperation.Ifrefrigerantcomesinto
contactwithaame,poisonousgaseswillbereleased.
• Allelectricworkmustbeperformedbyaqualiedtechnicianaccordingtolocal
regulations and the instructions given in this manual.
• Useonlyspecied cablesfor wiring.Thewiring connectionsmustbe made
securely with no tension applied on the terminal connections. Also, never splice
the cables for wiring (unless otherwise indicated in this document).
 Failuretoobservetheseinstructionsmayresultinoverheatingorare.
• Theapplianceshallbeinstalledinaccordancewithnationalwiringregulations.
• Thisappliance is not intendedfor use bypersons (including children) with
reducedphysical, sensory ormental capabilities, orlack of experienceand
knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
• Childrenshouldbesupervisedtoensurethattheydonotplaywiththeappliance.
• Theterminalblockcoverpaneloftheunitmustbermlyattached.
• Ifthe supply cordis damaged,it must bereplaced bythe manufacturer,its
serviceagentorsimilarlyqualiedpersonsinordertoavoidahazard.
• UseonlyaccessoriesauthorizedbyMitsubishiElectricandaskadealeroran
authorizedtechniciantoinstallthem.
• Afterinstallationhasbeencompleted,checkforrefrigerantleaks.Ifrefrigerant
leaksintotheroomandcomesintocontactwiththeameofaheaterorportable
cooking range, poisonous gases will be released.
• Wheninstalling or relocating, orservicing the air conditioner, use only the
speciedrefrigerant(R410A)tochargetherefrigerantlines.Donotmixitwith
any other refrigerant and do not allow air to remain in the lines.
 Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhigh
pressureintherefrigerantline,andmayresultinanexplosionandotherhazards.
 Theuseofanyrefrigerantotherthanthatspeciedforthesystemwillcause
mechanical failure or system malfunction or unit breakdown. In the worst case,
this could lead to a serious impediment to securing product safety.
1.1. Before installation (Environment)
Caution:
• Donotusetheunitinanunusualenvironment.Iftheairconditionerisinstalled
inareasexposedtosteam,volatileoil(includingmachineoil),orsulfuricgas,
areasexposedtohighsaltcontentsuchastheseaside,theperformancecan
besignicantlyreducedandtheinternalpartscanbedamaged.
• Donotinstalltheunitwherecombustiblegasesmayleak,beproduced,ow,or
accumulate.Ifcombustiblegasaccumulatesaroundtheunit,reorexplosion
may result.
• Donotkeepfood,plants,cagedpets,artwork,orprecisioninstrumentsinthe
directairowoftheindoorunitortooclosetotheunit,astheseitemscanbe
damaged by temperature changes or dripping water.
• Whentheroomhumidityexceeds80%orwhenthedrainpipeisclogged,water
may drip from the indoor unit. Do not install the indoor unit where such dripping
can cause damage.
• Wheninstallingtheunitinahospitalorcommunicationsofce,bepreparedfor
noise and electronic interference. Inverters, home appliances, high-frequency
medical equipment, and radio communications equipment can cause the air
conditioner to malfunction or breakdown. The air conditioner may also affect
medical equipment, disturbing medical care, and communications equipment,
harming the screen display quality.
1.2. Before installation or relocation
Caution:
• Beextremely carefulwhentransporting theunits.Two ormorepersons are
neededtohandletheunit,asitweighs20kg,44lbsormore.Donotgraspthe
packaging bands. Wear protective gloves as you can injure your hands on the
nsorotherparts.
• Besuretosafelydisposeofthepackagingmaterials.Packagingmaterials,such
as nails and other metal or wooden parts may cause stabs or other injuries.
• Thermalinsulationoftherefrigerantpipeisnecessarytopreventcondensation.
If the refrigerant pipe is not properly insulated, condensation will be formed.
• Placethermalinsulationonthepipestopreventcondensation.Ifthedrainpipe
isinstalledincorrectly,waterleakageanddamagetotheceiling,oor,furniture,
or other possessions may result.
• Donotcleantheairconditionerunitwithwater.Electricshockmayresult.
• Tightenallarenutstospecicationusingatorquewrench.Iftightenedtoo
much,thearenutcanbreakafteranextendedperiod.
• Iftheunitisrunforlonghourswhentheairabovetheceilingisathightem-
perature/high humidity (dew point above 26 ºC, 79 ºF), dew condensation may
be produced in the indoor unit or the ceiling materials. When operating the units
inthiscondition,addinsulationmaterial(10-20mm,25/64-25/32inch)tothe
entire surface of the unit and ceiling materials to avoid dew condensation.
1.3.Beforeelectricwork
Caution:
• Besuretoinstallcircuitbreakers.Ifnotinstalled,electricshockmayresult.
• Forthepowerlines,usestandardcablesofsufcientcapacity.Otherwise,a
shortcircuit,overheating,orremayresult.
• Wheninstallingthepowerlines,donotapplytensiontothecables.
• Besuretogroundtheunit.Iftheunitisnotproperlygrounded,electricshock
may result.
• Usecircuitbreakers(groundfaultinterrupter,isolatingswitch(+Bfuse),and
moldedcasecircuitbreaker)withthespeciedcapacity.Ifthecircuitbreaker
capacityislargerthanthespeciedcapacity,breakdownorremayresult.
1.4.Beforestartingthetestrun
Caution:
• Turnonthemainpowerswitchmorethan12hoursbeforestartingoperation.
Starting operation just after turning on the power switch can severely damage
the internal parts.
• Beforestartingoperation,checkthatallpanels,guardsandotherprotectiveparts
are correctly installed. Rotating, hot, or high voltage parts can cause injuries.
Note:
Thephrase“Wiredremotecontroller”inthisinstallationmanualrefersonlytothePAR-32MAA.
If you need any information for the other remote controller, please refer to either the installation manual or initial setting manual which are included in those
boxes.
• Donotoperatetheairconditionerwithouttheairltersetinplace.Iftheairlter
is not installed, dust may accumulate and breakdown may result.
• Donottouchanyswitchwithwethands.Electricshockmayresult.
• Donottouchtherefrigerantpipeswithbarehandsduringoperation.
• Afterstoppingoperation,besuretowaitatleastveminutesbeforeturningoff
the main power switch. Otherwise, water leakage or breakdown may result.
BH79D659K02.indb 2 2017/05/22 17:25:26