MLZ-KP Installation Manual
En-1
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Besuretoread“THEFOLLOWINGSHOULDALWAYSBEOBSERVEDFORSAFETY”beforeinstallingtheairconditioner.
• Besuretoobservethewarningsandcautionsspeciedhereastheyincludeimportantitemsrelatedtosafety.
• Afterreadingthismanual,besuretokeepittogetherwiththeOPERATINGINSTRUCTIONSforfuturereference.
• Pleasereporttoyoursupplyauthorityorobtaintheirconsentbeforeconnectingthisequipmenttothepowersupplysystem.
Required Tools for Installation
■ Do not install the unit by yourself (user).
Incompleteinstallationcouldcausereorelectric
shock,injuryduetotheunitfalling,orleakage
of water. Consult the dealer from whom you
purchasedtheunitoraqualiedinstaller.
■ Perform the installation securely referring
to the installation manual.
Incompleteinstallationcouldcausereorelectric
shock,injuryduetotheunitfalling,orleakageof
water.
■ 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.
Iftheinstallationlocationcannotbeartheweight
oftheunit,theunitcouldfallcausinginjury.
■ Electrical work should be performed by a
qualied, experienced electrician, accord-
ing to the installation manual. Be sure to
use an exclusive circuit. Do not connect
other electrical appliances to the circuit.
Ifthecapacityofthepowercircuitisinsufcient
or there is incomplete electrical work, itcould
resultinareoranelectricshock.
■ Ground the unit correctly.
Donotconnectthegroundtoagaspipe,water
pipe,lightningrodortelephoneground.Defective
groundingcouldcauseelectricshock.
■ 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 con-
nection.
Incompleteconnectingandsecuringcouldcause
re.
■ Do not install the unit in a place where
inammable gas may leak.
Ifgasleaksandaccumulatesintheareaaround
theunit,itcouldcauseanexplosion.
■ Do not use intermediate connection of the
power cord or the extension cord and do
not connect many devices to one AC outlet.
Itcouldcauseareoranelectricshockdueto
defectivecontact,defectiveinsulation,exceeding
thepermissiblecurrent,etc.
■ Be sure to use the parts provided or speci-
ed parts for the installation work.
Theuseofdefectivepartscouldcauseaninjury
or leakage of water due to a re, an electric
shock,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,orloosepartsonthe
powersupplyplugortheoutlet,itcouldcause
electricshockorre.Ifloosepartsarefoundon
thepowersupplyplug,replaceit.
■ Attach the electrical cover to the indoor
unit and the service panel to the outdoor
unit securely.
Iftheelectricalcoveroftheindoorunitand/orthe
servicepaneloftheoutdoorunitarenotattached
securely, it couldresultin a reor an electric
shockduetodust,water,etc.
■ When installing, relocating, or servicing
the unit, make sure that no substance
other than the specied refrigerant (R410A)
enters the refrigerant circuit.
Anypresenceofforeignsubstancesuchasair
cancauseabnormalpressureriseandmayresult
inexplosionorinjury.Theuseofanyrefrigerant
otherthanthatspeciedforthesystemwillcause
mechanicalfailure,systemmalfunction,orunit
breakdown.Intheworstcase,thiscouldleadto
aseriousimpedimenttosecuringproductsafety.
■ Do not discharge the refrigerant into the
atmosphere. Check that the refrigerant gas
does not leak after installation has been
completed. If refrigerant leaks during instal-
lation, ventilate the room.
Ifrefrigerantcomesincontactwithare,harmful
gascouldbegenerated.
Ifrefrigerantgasleaksindoors,andcomesinto
contact with the ameof afan heater,space
heater,stove,etc.,harmfulgaseswillbegener-
ated.
■ Use appropriate tools and piping materials
for installation.
ThepressureofR410Ais1.6timesmorethan
R22.Notusingappropriatetoolsormaterialsand
incompleteinstallationcouldcausethepipesto
burstorinjury.
■ When pumping down the refrigerant, stop
the compressor before disconnecting the
refrigerant pipes.
Iftherefrigerant pipes are disconnected while
thecompressorisrunningandthestopvalveis
open,aircouldbedrawninandthepressurein
therefrigerationcyclecouldbecomeabnormally
high.Thiscouldcausethepipestoburstorinjury.
■ When installing the unit, securely connect
the refrigerant pipes before starting the
compressor.
Ifthecompressorisstartedbeforetherefrigerant
pipesareconnectedandwhenthestopvalveis
open,aircouldbedrawninandthepressurein
therefrigerationcyclecouldbecomeabnormally
high.Thiscouldcausethepipestoburstorinjury.
■ Fasten a are nut with a torque wrench as
specied in this manual.
Iffastenedtootight,aarenutmaybreakafter
alongperiodandcauserefrigerantleakage.
■ The unit shall be installed in accordance
with national wiring regulations.
■ Do not use means to accelerate the defrost-
ing 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.
■ Keep any required ventilation openings
clear of obstruction.
■ Keep gas-burning appliances, electric
heaters, and other re sources (ignition
sources) away from the location where in-
stallation, repair, and other air conditioner
work will be performed.
WARNING
(Couldleadtodeath,seriousinjury,etc.)
ENGLISH
Thisinstallationmanualdescribesonlyforthe
indoorunit.RefertotheMXZtypemanualfor
outdoorunitsetup.
CONTENTS
1. BEFOREINSTALLATION............................ 1
2. INDOORUNITINSTALLATION................... 4
3. FLARINGWORKANDPIPE
CONNECTION............................................ 8
4. TESTRUN.................................................10
5. GRILLE(OPTION)INSTALLATION..........10
6. PUMPINGDOWN..................................... 11
7. CONNECTINGANINTERFACE(OPTION)
TOTHEAIRCONDITIONER.................... 11
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
2-15/16in.(75mm)holesaw
Torquewrench
Wrench(orspanner)
FlaretoolforR410A
GaugemanifoldforR410A
VacuumpumpforR410A
ChargehoseforR410A
Pipecutterwithreamer
Waterbottle
0.9to1.0Lwater
1. BEFORE INSTALLATION
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
■ Depending on the installation area, install a
Ground Fault Interrupt (GFI) circuit breaker.
IftheGroundFaultInterrupt(GFI)circuitbreaker
isnotinstalled,anelectricshockcouldoccur.
■ Perform the drainage/piping work securely
according to the installation manual.
If thereis defectin the drainage/piping work,
water could drip from the unit, and damage
householditems.
■ Do not touch the air inlet or the aluminum
ns of the outdoor unit.
Thiscouldcauseinjury.
■ Do not install the outdoor unit where small
animals may live.
Ifsmallanimals entertheunitanddamage its
electrical parts,it could cause a malfunction,
smokeemission,orre.Keeptheareaaround
theunitclean.
RG79Y948H01_en.indd 1 2018/01/23 11:41:53