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1. Safety precautions.....................................................................................1
2. Installation location....................................................................................2
3. Installing the indoor unit ............................................................................3
4. Installing the refrigerant piping ..................................................................4
5. Drainage piping work.................................................................................6
6. Electrical work ...........................................................................................6
7. Test run....................................................................................................10
8. Easy maintenance function .....................................................................13
1. Safety precautions
Note:
The phrase “Wired remote controller” in this installation manual refers to the PAR-40MAA. If you need any information for other remote controller, please refer
to the installation manual that is included with the optional remote controller.
Contents
►Beforeinstallingtheunit,makesureyoureadallthe“SafetyPrecautions”.
►The“SafetyPrecautions”provideveryimportantpointsregardingsafety.Makesureyoufollowthem.
►Pleasereporttoyoursupplyauthorityorobtaintheirconsentbeforeconnectingthisequipmenttothepowersupplysystem.
Symbols used in the text
Warning:
Describesprecautionsthatshouldbeobservedtopreventdangerofinjuryor
death to the user.
Caution:
Describesprecautionsthatshouldbeobservedtopreventdamagetothe
unit.
Symbols used in the illustrations
: Indicates a part which must be grounded.
: Be sure not to do.
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.
MEANINGSOFSYMBOLSDISPLAYEDONINDOORUNITAND/OROUTDOORUNIT
WARNING
(Risk of re)
This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.
In case that refrigerant type is R32, this unit uses a ammable refrigerant.
If refrigerant leaks and comes in contact with re or heating part, it will create harmful gas and there is risk of re.
Read the OPERATION MANUAL carefully before operation.
Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.
Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
Warning:
• Carefullyreadthelabelsafxedtothemainunit.
• Askadealeroranauthorizedtechniciantoinstall,relocateandrepairthe
unit.
• Theusershouldneverattempttorepairtheunitortransferittoanotherloca-
tion.
• Forinstallationandrelocationwork,followtheinstructionsintheInstallation
Manualandusetoolsandpipecomponentsspecicallymadeforusewith
refrigerantspeciedintheoutdoorunitinstallationmanual.
• The unit must be installed according to the instructions in order to mini-
mizetheriskofdamagefromearthquakes,typhoons,orstrongwinds.An
incorrectlyinstalledunitmayfalldownandcausedamageorinjuries.
• Donotaltertheunit.Itmaycausere,electricshock,injuryorwaterleak-
age.
• The unit must be securely installed on a structure that can sustain its
weight.
• Theapplianceshallbestoredinawell-ventilatedareawheretheroomsize
correspondstotheroomareaasspeciedforoperation.
• If the air conditioner is installed in a small room or closed room, measures
mustbetakentopreventtherefrigerantconcentrationintheroomfrom
exceedingthesafetylimitintheeventofrefrigerantleakage.Shouldthe
refrigerantleakandcausetheconcentrationlimittobeexceeded,hazards
duetolackofoxygenintheroommayresult.
• Keepgas-burningappliances,electricheaters,andotherresources(igni-
tion sources) away from the location where installation, repair, and other air
conditionerworkwillbeperformed.
Ifrefrigerantcomesintocontactwithaame,poisonousgaseswillbere-
leased.
• Ventilatetheroomifrefrigerantleaksduringoperation.Ifrefrigerantcomes
intocontactwithaame,poisonousgaseswillbereleased.
• Allelectricworkmustbeperformedbyaqualiedtechnicianaccordingto
localregulationsandtheinstructionsgiveninthismanual.
• Do not use intermediate connection of the electric wires.
• Useonlyspeciedcablesforwiring.Thewiringconnectionsmustbemade
securelywithnotensionappliedontheterminalconnections.Also,never
splicethecablesforwiring(unlessotherwiseindicatedinthisdocument).
Failuretoobservetheseinstructionsmayresultinoverheatingorare.
• Wheninstallingorrelocating,orservicingtheairconditioner,useonlythe
speciedrefrigerantwrittenonoutdoorunittochargetherefrigerantlines.
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 specified for the system will
causemechanicalfailureorsystemmalfunctionorunitbreakdown.Inthe
worst case, this could lead to a serious impediment to securing product
safety.
• The appliance shall be installed in accordance with national wiring regula-
tions.
• Thisapplianceisnotintendedforusebypersons(includingchildren)with
reducedphysical,sensoryormentalcapabilities,orlackofexperienceand
knowledge,unlesstheyhavebeengivensupervisionorinstructioncon-
cerning use of the appliance by a person responsible for their safety.
• Childrenshouldbesupervisedtoensurethattheydonotplaywiththeap-
pliance.
• Theterminalblockcoverpaneloftheunitmustbermlyattached.
• If the supply cord is damaged, it must be replaced by the manufacturer, its
serviceagentorsimilarlyqualiedpersonsinordertoavoidahazard.
• UseonlyaccessoriesauthorizedbyMitsubishiElectricandaskadealeror
anauthorizedtechniciantoinstallthem.
• Afterinstallationhasbeencompleted,checkforrefrigerantleaks.Ifrefrig-
erantleaksintotheroomandcomesintocontactwiththeameofaheater
orportablecookingrange,poisonousgaseswillbereleased.
• Do not use means to accelerate the defrosting process or to clean, other
than those recommended by the manufacturer.
• The appliance shall be stored in a room without continuously operating ig-
nitionsources(forexample:openames,anoperatinggasapplianceoran
operating electric heater).
• Do not pierce or burn.
• Beawarethatrefrigerantsmaynotcontainanodour.
• Pipe-workshallbeprotectedfromphysicaldamage.
• Theinstallationofpipe-workshallbekepttoaminimum.
• Compliancewithnationalgasregulationsshallbeobserved.
• Keepanyrequiredventilationopeningsclearofobstruction.
• Donotuselowtemperaturesolderalloyincaseofbrazingtherefrigerant
pipes.
• Whenperformingbrazingwork,besuretoventilatetheroomsufciently.
Makesurethattherearenohazardousorammablematerialsnearby.
Whenperforming theworkin aclosedroom, smallroom, orsimilarloca-
tion,makesurethattherearenorefrigerantleaksbeforeperformingthe
work.
Ifrefrigerantleaksandaccumulates,itmayigniteorpoisonousgasesmay
be released.
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