MXZ-3C30NA3 Installation Manual

En-1
n Do not install the unit by yourself (user).
 Incompleteinstallationcouldcausereorelectricshock,injuryduetotheunit
falling,orleakageofwater.Consultthedealerfromwhomyoupurchasedthe
unitoraqualiedinstaller.
n Perform the installation securely referring to the installation manual.
 Incompleteinstallationcouldcausereorelectricshock,injuryduetotheunit
falling,orleakageofwater.
n When installing the unit, use appropriate protective equipment and tools
for safety.
 Failuretodosocouldcauseinjury.
n Install the unit securely in a place which can bear the weight of the unit.
If the installation location cannot bear the weight of the unit, the unit could fall
causinginjury.
n Perform electrical work according to the installation manual and be sure to
use an exclusive circuit. Do not connect other electrical appliances to the
circuit.
 Ifthecapacityofthepowercircuitisinsufcientorthereisincompleteelectrical
work,itcouldresultinareoranelectricshock.
n Do not damage the wires by applying excessive pressure with parts or
screws.
 Damagedwirescouldcausere.
n Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
 Failuretodosocouldcauseelectricshock.
n Usethespecied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.
 Incompleteconnectingandsecuringcouldcausere.
n Donotinstalltheunitinaplacewhereinammablegasmayleak.
 Ifgasleaksandaccumulatesintheareaaroundthe unit, it could cause an
explosion.
n Do not use intermediate connection of the power cord or the extension
cord and do not connect many devices to one AC outlet.
 Itcould cause a re or an electricshockduetodefectivecontact,defective
insulation, exceeding the permissible current, etc.
n Besuretousethepartsprovidedorspeciedpartsfortheinstallation
work.
 Theuseofdefectivepartscouldcauseaninjuryorleakageofwaterduetoa
re,anelectricshock,theunitfalling,etc.
n
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.
If there is dust, clogging, or loose parts on the power supply plug or the outlet, it
couldcauseelectricshockorre.Ifloosepartsarefoundonthepowersupply
plug, replace it.
n Attach the electrical cover to the indoor unit and the service panel to the
outdoor unit securely.
 Iftheelectricalcoveroftheindoorunitand/ortheservicepaneloftheoutdoor
unitarenotattachedsecurely,itcouldresultinareoranelectricshockdue
to dust, water, etc.
n When installing, relocating, or servicing the unit, make sure that no sub-
stanceotherthanthespeciedrefrigerant(R410A)enterstherefrigerant
circuit.
Any presence of foreign substance such as air can cause abnormal pressure
riseandmayresultinexplosionorinjury.Theuseofanyrefrigerantotherthan
thatspeciedforthesystemwillcausemechanicalfailure,systemmalfunction,
orunitbreakdown.Intheworstcase,thiscouldleadtoaseriousimpediment
to securing product safety.
n Do not discharge the refrigerant into the atmosphere. If refrigerant leaks
during installation, ventilate the room.
 Ifrefrigerantcomesincontactwithare,harmfulgascouldbegenerated.Refriger-
antleakagemaycausesuffocation.Ventilatetheroom.
n Check that the refrigerant gas does not leak after installation has been
completed.
 Ifrefrigerantgasleaksindoors,andcomesintocontactwiththeameofafan
heater,spaceheater,stove,etc.,harmfulsubstanceswillbegenerated.
n Use appropriate tools and piping materials for installation.
The pressure of R410A is 1.6 times more than R22. Not using appropriate
tools or materials and incomplete installation could cause the pipes to burst
orinjury.
n When pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running and
thestopvalveisopen,aircouldbedrawninandthepressureintherefrigera-
tion cycle could become abnormally high. This could cause the pipes to burst
orinjury.
n When installing the unit, securely connect the refrigerant pipes before
starting the compressor.
If the compressor is started before the refrigerant pipes are connected and
whenthestopvalveisopen,aircouldbedrawninandthepressureinthe
refrigeration cycle could become abnormally high. This could cause the pipes
toburstorinjury.
n Fastenaarenutwithatorquewrenchasspeciedinthismanual.
 If fastened too tight, a are nutmay break after a long period and cause
refrigerantleakage.
n The unit shall be installed in accordance with national wiring regulations.
n Ground the unit correctly.
Do not connect the ground to a gas pipe, water pipe, lightning rod or telephone
ground.Defectivegroundingcouldcauseelectricshock.
n Be sure to install a Ground Fault Interrupt (GFI) circuit breaker.
 FailuretoinstallaGroundFaultInterrupt(GFI)circuitbreakermayresultin
electricshockorre.
1-2.SPECIFICATIONS
1-1.THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY
• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.
• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.
• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
n Perform the drainage/piping work securely according to the installation
manual.
 Ifthereisdefectinthedrainage/pipingwork,watercoulddropfromtheunit,
soakinganddamaginghouseholdgoods.
n Donottouchtheairinletorthealuminumnsoftheoutdoorunit.
 Thiscouldcauseinjury.
n Do not install the outdoor unit where small animals may live.
If small animals enter and touch the electric parts inside the unit, it could
causeamalfunction,smokeemission,orre.Also,adviseusertokeepthe
area around the unit clean.
WARNING
(Couldleadtodeath,seriousinjury,etc.)
RequiredToolsforInstallation
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
Torque wrench
Wrench (or spanner)
5/32in.(4mm)hexagonal
wrench
Flare tool for R410A
Gauge manifold for R410A
VacuumpumpforR410A
Charge hose for R410A
Pipe cutter with reamer
ENGLISH
CONTENTS
1.BEFOREINSTALLATION ............................................................ 1
2. OUTDOOR UNIT INSTALLATION ............................................... 4
3.FLARINGWORKANDPIPECONNECTION ............................... 5
4.PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN ......... 5
5. PUMPING DOWN ........................................................................ 7
Model
Power supply Pipe length and height difference
*1,*2,*3,*4,*5,*6
RatedVoltage Frequency
Max. pipe length per indoor
unit/formulti-system
Max. height difference
Max. no. of bends per in-
doorunit/formultisystem
RefrigerantadjustmentA*7
MXZ-3C24NA2
MXZ-3C30NA2
MXZ-4C36NA2
208/230V 60Hz 82ft.(25m)/230ft.(70m) 49 ft. (15 m) 25/70 1.08ozeach5ft.(20g/m)
*1Neverusepipeswiththicknesslessthanspecied.Thepressureresistance
willbeinsufcient.
*2 Use a copper pipe or a copper-alloy seamless pipe.
*3Becarefulnottocrushorbendthepipeduringpipebending.
*4 Refrigerant pipe bending radius must be 4 in. (100 mm) or more.
*5Insulationmaterial:Heatresistingfoamplastic0.045specicgravity
*6Besuretousetheinsulationofspeciedthickness.Excessivethicknessmay
causeincorrectinstallationoftheindoorunitandinsufcientthicknessmay
cause dew drippage.
*7Ifpipelengthexceeds98ft.(30m),additionalrefrigerant(R410A)charge
is required. (No additional charge is required for pipe length less than 98 ft.
(30m).)
Additional refrigerant (ft.) = A ×
(pipe length (ft.) – 98)
5
 Additionalrefrigerant(m)=A×(pipelength(m)–30)
1. BEFOREINSTALLATION
WG79A686H01_en.indd 1 11/24/2015 9:04:54 AM