Mitsubishi Electric NTXUKS06A112A Series User manual

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INSTALLATION MANUAL For INSTALLER
• This manual only describes the installation of indoor unit.
When installing the outdoor unit, refer to the installation manual of outdoor unit.
NOTICE D’INSTALLATION POUR L’INSTALLATEUR
• Cette notice ne décrit que l’installation de l’unité interne.
Pour l’installation de l’unité externe, se reporter à la notice d’installation de l’appareil.
MANUAL DE INSTALACIÓN PARA EL INSTALADOR
• En este manual sólo se describe la instalación de la unidad interior.
Para instalar la unidad exterior, consulte el manual de instalación de dicha unidad.
CEILING CASSETTE TYPE AIR CONDITIONERS
NTXUKS06A112A✱
MITSUBISHI ELECTRIC TRANE HVAC US
DG79V327H02_01En.indd 1 2022/09/27 10:41:24

EN-1
FOR INSTALLER
■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.
■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.
■When installing the unit, use appropriate protec-
tive equipment and tools for safety.
Failure to do so could cause injury.
■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.
■ Electrical work should be performed by a quali-
ed, experienced electrician, according to the
installation manual. 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.
■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.
■ Do not damage the wires by applying excessive
pressure with parts or screws.
 Damagedwirescouldcausereorelectricshock.
■ Be sure to cut off the main power in case of set-
ting up the indoor P.C. board or wiring works.
 Failuretodosocouldcauseelectricshock.
■ 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.
Do not extend the wires, or use intermediate con-
nection.
 Incompleteconnectingandsecuringcouldcausere.
■ Do not install the unit in a place where ammable
gas may leak.
 Ifgasleaksandaccumulatesintheareaaroundthe
unit, it could cause an explosion.
■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.
■ 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.
■ 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.
■ Attach the disp cover to the indoor unit and the
service panel to the outdoor unit securely.
If the disp 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.
■ When installing, relocating, or servicing the unit,
make sure that no substance other than the
specied refrigerant (R410A) enters the refriger-
ant circuit.
Any presence of foreign substance such as air can
cause abnormal pressure rise and may result in explo-
sion 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.
■Do not alter the unit.
 Itmaycausere,electricshock,injuryorwaterleakage.
■ Do not discharge the refrigerant into the atmos-
phere. Check that the refrigerant gas does not
leak after installation has been completed. If
refrigerant leaks during installation, ventilate the
room.
 Ifrefrigerantcomesincontactwithare,harmfulgas
could be generated.
 Ifrefrigerantgasleaksindoors,andcomesintocontact
withtheameofafanheater,spaceheater,stove,etc.,
harmfulgaseswillbegenerated.
■ 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.
■ When the refrigeration circuit has a leak, do not
execute pump down with the compressor. When
pumping down the refrigerant, stop the compres-
sor before disconnecting 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refrigeration
cycle could become abnormally high. This could cause
the pipes to burst or injury.
■ Fix the connecting cable at the prescribed posi-
tion securely.
Incorrect installation may cause electric shock,
re, and/or malfunction.
■ 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.
■ 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.
■ The unit shall be installed in accordance with
national wiring regulations.
■ 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 exam-
ple: 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 installation, repair, and other air
conditioner work will be performed.
■ Exercise caution when using any auxiliary heat
source and follow all third party manufacturer
instructions and safety guidelines for installation
and usage.
Any auxiliary heat source connected to this unit via the
CN24 connection must have an independent tempera-
ture control mechanism. Failure to install and maintain
such temperature control mechanism may void the
warrantyforthisunit.
 MitsubishiElectricshallnotbearanywarrantyobligation
or other liability for any damage or loss in connection
withsuchthirdpartyauxiliaryheaters.
WARNING (Could lead to death, serious injury, etc.)
ENGLISH
This installation manual describes only
for the indoor unit. Refer to the MXZ type
manual for outdoor unit set up.
CONTENTS
1. BEFORE INSTALLATION..................... 1
2. INDOOR UNIT INSTALLATION............ 4
3. FLARING WORK AND PIPE
CONNECTION ..................................... 7
4. TEST RUN............................................ 9
5. GRILLE (OPTION) INSTALLATION ..... 9
6. PUMPING DOWN .............................. 10
7.
CONNECTING AN INTERFACE (OPTION)
TO THE AIR CONDITIONER
.................. 10
Required Tools for Installation
Phillipsscrewdriver
Level
Scale
Utilityknifeorscissors
2-15/16in.(75mm)holesaw
Torquewrench
Wrench (or spanner)
Flare tool for R410A
Gauge manifold for R410A
Vacuum pump for R410A
Charge hose for R410A
Pipecutterwithreamer
Water bottle
0.9to1.0Lwater
1. BEFORE INSTALLATION
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.
• Pleasereporttoyoursupplyauthorityorobtaintheirconsentbeforeconnectingthisequipmenttothepowersupplysystem.
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EN-2
This manual only describes the installation of indoor unit.
When installing the outdoor unit, refer to the installation manual of outdoor unit.
1-2. SELECTING THE INSTALLATION LOCATION
INDOOR UNIT
• Whereairowisnotblocked.
• Wherecool(orwarm)airspreadsovertheentireroom.
• Where it is not exposed to direct sunshine. Do not expose to direct sunshine also
duringtheperiodfollowingunpackingtobeforeuse.
• Where easily drained.
• Atadistance3ft.(1m)ormoreawayfromyourTVandradio.Operationofthe
airconditionermay interferewithradioor TVreception.Anampliermay be
required for the affected device.
•
Inaplaceasfarawayaspossiblefromuorescentandincandescentlights.Inorder
tomaketheinfraredremotecontroloperatetheairconditionernormally.Theheat
from the lights may cause deformation or the ultraviolet may cause deterioration.
• Wheretheairltercanberemovedandreplacedeasily.
• Whereitisawayfromtheotherheatorsteamsource.
REMOTE CONTROLLER
• Where it is easy to operate and easily visible.
• Where children cannot touch it.
• Selectapositionabout4ft.(1.2m)abovetheoorandcheckthatsignalsfrom
the remote controller are surely received by the indoor unit from that position
(‘beep’ or ‘beep beep’ receiving tone sounds). After that, attach remote controller
holdertoapillarorwallandinstallwirelessremotecontroller.
Note:
Inroomswhereinvertertypeuorescentlampsareused,thesignalfromthe
wirelessremotecontrollermaynotbereceived.
Note:
Avoidthefollowingplacesforinstallationwhereairconditionertroubleisliable
to occur.
• Whereammablegascouldleak.
• Where there is much machine oil.
• Whereoilissplashedorwheretheareaislledwithoilysmoke(suchascook-
ingareasandfactories,inwhichthepropertiesofplasticcouldbechanged
and damaged).
• Salty places such as the seaside.
• Wheresuldegasisgeneratedsuchashotspring,sewage,wastewater.
• Wherethereishigh-frequencyorwirelessequipment.
• Where there is emission of high levels of VOCs, including phthalate compounds,
formaldehyde,etc.,whichmaycausechemicalcracking.
• The appliance shall be stored so as to prevent mechanical damage from oc-
curring.
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
■Depending on the installation area, install a Ground
Fault Interrupt (GFI) circuit breaker.
IftheGroundFaultInterrupt(GFI)circuitbreakerisnot
installed,anelectricshockcouldoccur.
■ Perform the drainage/piping work securely accord-
ing to the installation manual.
 Ifthereisdefectinthedrainage/pipingwork,watercould
dropfromtheunit,soakinganddamaginghousehold
goods.
■ Do not touch the air inlet or the aluminum ns of
the outdoor unit.
This could cause injury.
■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.
■Do not operate the air conditioner during interior
construction and nishing work, or while waxing
the oor.
Before operating the air conditioner, ventilate the room
wellafter such workisperformed. Otherwise,itmay
cause volatile elements to adhere inside the air condi-
tioner,resultinginwaterleakageorscatteringofdew.
Electrical specications
INDOOR UNIT
Powersupply(V,PHASE,Hz) 208/230, 1, 60
Min. Circuit Ampacity (A) 1.0
Fan motor (F.L.A.) (A) 0.68
Pipe
Outside
diameter
Minimum
wallthick-
ness
Insulation
thickness Insulation
material
inch (mm)
For liquid
NTXUKS06A112A✱
1/4 (6.35) 0.0315
(0.8) 5/16 (8) Heat resist-
ant foam
plastic 0.045
Specic
gravity
For gas 3/8 (9.52) 0.0315
(0.8) 5/16 (8)
1-3. SPECIFICATIONS
1-3-1. INDOOR/OUTDOOR WIRE CONNECTION
• Wiringworkshouldbebasedonapplicabletechnicalstandards.
• Wiringconnectionsshouldbemadefollowingthediagram.
• Securelytightenscrews.
Connecting wires and the ground wire
• Use solid conductor Min. AWG14 or stranded conductor Min. AWG14.
• Usedoubleinsulatedcopperwirewith600Vinsulation.
• Use copper conductors only.
*Followlocalelectricalcodes.
Note:
Whentheindoorunitispoweredfromtheoutdoorunit,depending
onlocalcode,adisconnectswitchneedstobeinstalledtoapower
supply circuit.
1-3-2. REFRIGERANT PIPES
• Topreventcondensation,insulatethetworefrigerantpipes.
Note:
Besuretousetheinsulationofspeciedthickness(tableontheright).
Excessive insulation may cause incorrect installation of the indoor
unit, and too little insulation may cause condensate to form.
• Theunithasaredconnectionsonbothindoorandoutdoorsides.
• Remove the valve cover from the outdoor unit, then connect the pipe.
• Refrigerant pipes are used to connect the indoor and outdoor units.
• Be careful not to crush or over bend the pipe in pipe bending.
DG79V327H02_01En.indd 2 2022/09/27 10:41:24

H
N
P
A
L
B
J
M
K
E
EN-3
E
E
1-4. INSTALLATION DIAGRAM
Units should be installed by licensed contractor according to local
code requirements.
BesuretousewallholesleeveKto prevent indoor/outdoor
connectingwireDfromcontactingmetalpartsinthewallandto
preventdamagebyrodentsincasethewallishollow.
ACCESSORIES
Checkthefollowingpartsbeforeinstallation.
Alkalinebattery(AAA)for 2
Drainhose(withinsulation) 1
Specialwasher(withcushion,4pcs) 8
Installation template 1
Fixingscrewfor M5 × 30 mm 4
Band 1
Fixingscrewfor 4 × 16 mm 2
Remote controller 1
Remote controller holder 1
Fixingscrewfor 3.5×16mm(Black) 2
PARTS TO BE PROVIDED AT YOUR SITE
ARefrigerant pipe 1
BDrain pipe (O.D. 1 in. (26 mm)) 1
CInstallation tools (See 1-3.) 1
DIndoor/outdoorunitconnectingwire* 1
ESuspension bolt (W3/8) 4
FNutwithange(W3/8) 8
GNut (W3/8) 4
H
Insulating material for A
(Heat resistant foamed polyethylene,
specicgravity0.045,thicknessmore
than 1/2 in. (14 mm))
1
J
Insulating material for B
(Foamedpolyethylene,specicgravity
0.03,thicknessmorethan3/8in.(10
mm))
1
KWall hole sleeve 1
LPartsformendingwallhole(putty,
cover) 1
MPipexingband 2 to 7
NFixingscrewforM2 to 7
PPiping tape 1 to 5
* Note:
Placeindoor/outdoorunitconnectingwireDat least
3ft.(1m)awayfromtheTVantennawire.
Service space
• Thedimensionsofceilingopeningcanberegulatedwithintherangeshown
infollowingdiagram;socenterthemainunitagainsttheopeningofceiling,
ensuring that the respective opposite sides on all sides of the clearance
betweenthembecomesidentical.
Aftertheleaktest,applyinsulatingmaterialtightlysothatthere
is no gap.
Whenthepipingistobeattachedtoawallcontainingmetals(tin
plated)ormetalnetting,useachemicallytreatedwoodenpiece
3/4in.(20mm)orthickerbetweenthewallandthepipingorwrap
7 to 8 turns of insulation vinyl tape around the piping.
To use existing piping, perform COOL operation for 30 minutes and
pumpdownbeforeremovingtheoldairconditioner.Remakeare
accordingtothedimensionfornewrefrigerant.
Indoor unit
Wall hole
sleeve K
Sealthewallhole
gapwithputtyL.
Fixthepipetowall
withpipexing
band M.
Cut off the
extra length. PipexingbandM
FixingscrewN
Wall hole cover L
IMPORTANT NOTES
Checkthatcablingwillnotbesubjecttowear,corrosion,excessivepressure,
vibration,sharpedgesoranyotheradverseenvironmentaleffects.Thecheck
shallalsotakeintoaccounttheeffectsofagingorcontinualvibrationfrom
sources such as compressors or fans.
7-5/8 (194)
4-3/8 (112)
Ceiling surface
7-13/16 (200)
or more
7-13/16 (200)
or more
7-13/16 (200)
or more
Grille
7-5/8 (194)
Ceiling surface
Ceiling surface
Air outlet
Whereairow
isnotblocked.
inch (mm)
Air inlet
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EN-4
2-1. CEILING OPENINGS AND SUSPENSION BOLT
INSTALLATION LOCATIONS
• Installtheindoorunitatleast7ft.(2.2m)aboveoororgradelevel.
• For appliance not accessible to the general public.
• Refrigerant pipes connection shall be accessible for maintenance purposes.
• Makeanopeningintheceiling12-3/4×34-10/16in.(325mm×880mm)in
size.Thisfunctionsasacheckwindowandwillbeneededlaterduringservicing.
• Ifthedimensionsarenotaccurate,whenthegrilleisinstalledtheremaybe
gapsbetweenitandtheindoorunit.Thismayresultindrippingwaterorother
problems.
• When deciding on placement, consider carefully the space around the ceiling
andmakeyourmeasurementsgenerous.
• Ceiling types and building construction differ. Therefore you should consult
withthebuilderanddecorator.
• Using the installation template (topofthepackage)andthegauge(supplied
asanaccessorywiththegrille),makeanopeningintheceilingsothatthe
mainunitcanbeinstalledasshowninthediagram.(Themethodforusingthe
templateandthegaugeareshown.)
• Use W3/8 suspension bolts E.
• Aftersuspendingtheindoorunit,youwillhavetoconnectthepipesandwiring
abovetheceiling.Oncethelocationhasbeenxedandthedirectionofthe
pipes has been determined, place the refrigerant and drainage pipes, and the
wiringthatconnectstheindoorandoutdoorunitsintheirdesiredlocations
beforesuspendingtheindoorunit.Thisisespeciallyimportantincaseswhere
the ceiling is already in existence.
1) Wooden structures
• Usetiebeams (singlestoriedhouses)orsecond oorbeams(twostory
houses) as reinforcing members.
• Wooden beams for suspending air conditioners must be sturdy and their
sides must be at least 2-5/16 in. (60 mm) long if the beams are separated
by not more than 35-3/8 in. (900 mm) and their sides must be at least 3-1/2
in. (90 mm) long if the beams are separated by as much as 6 ft. (1800 mm).
• Use channel, duct and other parts procured locally to suspend the indoor
unit.
2) Ferro-concrete structures
• Securethesuspensionboltsusingthemethodshown,orusesteelorwooden
hangers, etc. to install the suspension bolts E.
• Whentheunitisputdownwithitslowersurfacefacingdown,placepacking
material(cushion)underneathtopreventhorizontalvanedamage.
Packingmaterial(cushion)
Align center of ceiling
opening and bolt distance
Outlet
(underside) Air
outlet
2-1/16 (53.5)
11/16 (17.5)
30-3/8 (773) Suspension bolt
34-10/16 (880) Ceiling opening
36 (915) Grille outlet
2-1/16 (53.5)
11/16 (17.5)
11/16 (17.5)
14-9/16 (370) Grille outlet
1-1/16 (27.5)
1-7/16 (38)
1-7/16 (38)
12-3/4 (325)
Ceiling opening
9-3/4 (249)
Suspension bolt
9-3/4 in.
(249 mm)
30-3/8 in.
(773 mm)
2. INDOOR UNIT INSTALLATION
Ceiling panel
Rafter Beam
Roof beam
Use inserts rated at 220 to
330lb(100-150kg)each
C channel
Channel
suspension
bracket
Steel reinforcing rod
• Removethepackingmaterial(cushion)beforeinstallingtheplasticbagand
the cover.
• Topreventfromdust,protecttheindoorunitbycoveringwiththeplasticbag
and the cover.
• Remove the plastic bag and the cover before installing the grille (optional).
Plastic bag
Cover
Suspension
bolt
(W3/8) E
Suspension bolt
(W3/8) E
unit: inch (mm)
Suspension bolts (W3/8) E
DG79V327H02_01En.indd 4 2022/09/27 10:41:25