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1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.
• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.
• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.
■Do not install the unit by yourself (user).
Incompleteinstallationcouldcausereorelectricshock,injuryduetotheunit
falling,orleakageofwater.Consultthedealerfromwhomyoupurchasedthe
unitoraqualiedinstaller.
■Perform the installation securely referring to the installation manual.
Incomplete installation could cause re, electric shock, injury due to the unit
falling,orleakageofwater.
■When installing the unit, use appropriate protective equipment and tools
for safety.
Failuretodosocouldcauseinjury.
■Install the unit securely in a place which can bear the weight of the unit.
Iftheinstallationlocationcannotbeartheweightoftheunit,theunitcouldfall
causinginjury.
■ Electrical work should be performed by a qualied, experienced electri-
cian, according to the installation manual. Be sure to use an exclusive
circuit. Do not connect other electrical appliances to the circuit.
Ifthecapacityofthepowercircuitisinsufcientorthereisincompleteelectrical
work,itcouldresultinareoranelectricshock.
■ Do not damage the wires by applying excessive pressure with parts or
screws.
Damagedwirescouldcausereorelectricshock.
■ Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
Failuretodosocouldcauseelectricshock.
■ Use the specied wires to connect the indoor and outdoor units securely
and attach the wires rmly to the terminal block connecting sections so
the stress of the wires is not applied to the sections. Do not extend the
wires, or use intermediate connection.
Incompleteconnectingandsecuringcouldcausere.
■ Do not install the unit in a place where inammable gas may leak.
Ifgasleaksandaccumulatesintheareaaroundtheunit,itcouldcauseanexplosion.
■ Do not use intermediate connection of the power cord or the extension
cord and do not connect many devices to one AC outlet.
Itcouldcause a reoranelectricshockduetodefectivecontact,defective
insulation,exceedingthepermissiblecurrent,etc.
■ Be sure to use the parts provided or specied parts for the installation
work.
Theuseofdefectivepartscouldcauseaninjuryorleakageofwaterduetoare,
anelectricshock,theunitfalling,etc.
■ When plugging the power supply plug into the outlet, make sure that
there is no dust, clogging, or loose parts in both the outlet and the plug.
Make sure that the power supply plug is pushed completely into the
outlet.
Ifthereisdust,clogging,orloosepartsonthepowersupplyplugortheoutlet,it
couldcauseelectricshockorre.Ifloosepartsarefoundonthepowersupply
plug,replaceit.
■ Attach the electrical cover to the indoor unit and the service panel to the
outdoor unit securely.
Iftheelectricalcoveroftheindoorunitand/ortheservicepaneloftheoutdoor
unitarenotattachedsecurely,itcouldresultinareoranelectricshockdueto
dust,water,etc.
■ When installing, relocating, or servicing the unit, make sure that no
substance other than the specied refrigerant (R32) enters the refrigerant
circuit.
Anypresenceofforeignsubstancesuchasaircancauseabnormalpressure
riseandmayresultinexplosionorinjury.Theuseofanyrefrigerantotherthan
thatspeciedforthesystemwillcausemechanicalfailure,systemmalfunction,
orunitbreakdown.Intheworstcase,thiscouldleadtoaseriousimpedimentto
securingproductsafety.
■Do not discharge the refrigerant into the atmosphere. If refrigerant leaks
during installation, ventilate the room. Check that the refrigerant does
not leak after installation has been completed.
Ifrefrigerantleaksandcomesincontactwithreorheatingpartofsuchafan
heater,keroseneheater,orcookingstove,it willcreateharmful gas.Provide
ventilationinaccordancewithEN378-1.
■ Check that the refrigerant gas does not leak after installation has been
completed.
Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeameofafan
heater,spaceheater,stove,etc.,harmfulsubstanceswillbegenerated.
■ Use appropriate tools and piping materials for installation.
ThepressureofR32is1.6timesmorethanR22.Notusingappropriatetoolsor
materialsandincompleteinstallationcouldcausethepipestoburstorinjury.
■ When pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes.
Iftherefrigerantpipesaredisconnectedwhilethecompressorisrunningandthe
stopvalveisopen,aircouldbedrawninandthepressureintherefrigerationcycle
couldbecomeabnormallyhigh.Thiscouldcausethepipestoburstorinjury.
■ When installing the unit, securely connect the refrigerant pipes before
starting the compressor.
Ifthecompressorisstartedbeforetherefrigerantpipesareconnectedandwhen
thestopvalveisopen,aircouldbedrawninandthepressureintherefrigeration
cyclecouldbecomeabnormallyhigh.Thiscouldcausethepipestoburstorinjury.
■ Fasten a are nut with a torque wrench as specied in this manual.
Iffastenedtootight,aarenutmaybreakafteralongperiodandcauserefrigerant
leakage.
■ The unit shall be installed in accordance with national wiring regulations.
■Earth the unit correctly.
Donotconnecttheearthtoagaspipe,waterpipe,lightningrodortelephone
earth.Defectiveearthingcouldcauseelectricshock.
■Be sure to install an earth leakage breaker.
Failuretoinstallanearthleakagebreakermayresultinelectricshockorre.
■ When using a gas burner or other ame-producing equipment, com-
pletely remove all of the refrigerant from the air conditioner and ensure
that the area is well-ventilated.
Iftherefrigerantleaksandcomesincontactinreorheatingpart,itwillcreate
harmfulgasandthereisriskofre.
■ 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
ignition sources (for example: open ames, an operating gas appliance
or an operating electric heater).
■ Do not pierce or burn.
■ Be aware that refrigerants may not contain an odour.
■ Pipe-work shall be protected from physical damage.
■ The installation of pipe-work shall be kept to a minimum.
■ Compliance with national gas regulations shall be observed.
■ Keep any required ventilation openings clear of obstruction.
■ Do not use low temperature solder alloy in case of brazing the refrigerant
pipes.
■ Servicing shall be performed only as recommended by the manufacturer.
WARNING (Couldleadtodeath,seriousinjury,etc.)
Required Tools for Installation
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
Torquewrench
Wrench(orspanner)
4mmhexagonalwrench
FlaretoolforR32,R410A
GaugemanifoldforR32,R410A
VacuumpumpforR32,R410A
ChargehoseforR32,R410A
Pipecutterwithreamer
ENGLISH
CONTENTS
1.BEFOREINSTALLATION............................................................1
2.OUTDOORUNITINSTALLATION...............................................7
3.FLARINGWORKANDPIPECONNECTION...............................8
4.PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN.........9
5.PUMPINGDOWN...................................................................... 11
1. BEFORE INSTALLATION
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
(Riskofre)
Thisunitusesaammablerefrigerant.
Ifrefrigerantleaksandcomesincontactwithreorheatingpart,itwillcreateharmfulgasandthereisriskofre.
ReadtheOPERATINGINSTRUCTIONScarefullybeforeoperation.
ServicepersonnelarerequiredtocarefullyreadtheOPERATINGINSTRUCTIONSandINSTALLATIONMANUALbeforeoperation.
FurtherinformationisavailableintheOPERATINGINSTRUCTIONS,INSTALLATIONMANUAL,andthelike.
VG79A985H01_01En.indd 1 2018/10/03 11:45:06