Mitsubishi Electric MFZ-KJ25VE User manual

FLOOR TYPE AIR CONDITIONERS
MFZ-KJ25VE MFZ-KJ35VE MFZ-KJ50VE
English
INSTALLATION MANUAL For INSTALLER
• When installing multi units, refer to the installation manual of the multi unit for
outdoor unit installation.
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CONTENTS
1. BEFORE INSTALLATION....................................1
2. INDOOR UNIT INSTALLATION...........................3
3. OUTDOOR UNIT INSTALLATION.......................6
4. PURGING PROCEDURES, LEAK TEST,AND
TEST RUN...........................................................7
5. PUMPING DOWN................................................7
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.
1-2. SELECTING THE INSTALLATION LOCATION
CAUTION
(Couldleadtoseriousinjuryinparticularenvironmentswhenoperatedincorrectly.)
Required Tools for Installation
Phillips screwdriver
Level
Scale
Utilityknifeorscissors
25, 35 class 65 mm/50
class 75 mm hole saw
Torque wrench
Wrench(orspanner)
4 mm hexagonal wrench
Flare tool for R410A
Gauge manifold for R410A
Vacuum pump for R410A
Charge hose for R410A
Pipe cutter with reamer
nDo not install the unit by yourself (user).
Incomplete installation could cause fire, 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.
nPerform the installation securely referring to the
installation manual.
Incomplete installation could cause fire, electric
shock,injuryduetotheunitfalling,orleakageof
water.
nWhen installing the unit, use appropriate protec-
tive equipment and tools for safety.
 Failuretodosocouldcauseinjury.
nInstall 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 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 appli-
ances 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.
nEarth the unit correctly.
Do not connect the earth to a gas pipe, water pipe,
lightning rod or telephone earth. Defective earthing
could cause electric shock.
n Do not damage the wires by applying excessive
pressure with parts or screws.
 Damagedwirescouldcausereorelectricshock.
n 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.
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. Do not extend the wires, or use inter-
mediate connection.
Incomplete connecting and securing could cause
re.
n Do not install the unit in a place where inam-
mable gas may leak.
If gas leaks and accumulates in the area around the
unit, it could cause an explosion.
nDo 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de-
fective 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 com-
pletely 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 serv-
ice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 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
explosionorinjury.Theuseofanyrefrigerantother
thanthatspecifiedforthesystemwillcauseme-
chanical failure, system malfunction, or unit break-
down. In the worst case, this could lead to a serious
impedimenttosecuringproductsafety.
n Do not discharge the refrigerant into the atmos-
phere. If refrigerant leaks during installation, venti-
late the room.
 Ifrefrigerantcomesincontactwithare,harmful
gas could be generated.
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 incom-
plete installation could cause the pipes to burst or
injury.
n When pumping down the refrigerant, stop the
compressor before disconnecting the refriger-
ant 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 refrig-
eration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 compres-
sor.
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.
nInstall an earth leakage breaker depending on
the installation place.
If an earth leakage breaker is not installed, it could
cause electric shock.
nPerform the drainage/piping work securely ac-
cording 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.
nDo not install the outdoor unit where small ani-
mals 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.)
ENGLISH
INDOOR UNIT
• Whereairowisnotblocked.
• Where air spreads over the entire room.
• Rigid wall without vibration.
• Where it is not exposed to direct sunshine. Do not
expose to direct sunshine also during the period fol-
lowing unpacking to before use.
• Whereeasilydrained.
• At a distance 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 re-
quired for the affected device.
• In a place as far away as possible from uorescent
and incandescent lights (so the infrared remote con-
trolcanoperatetheairconditionernormally).
• Where the air filter can be removed and replaced
easily.
REMOTE CONTROLLER
• Whereitiseasytooperateandeasilyvisible.
• Where children cannot touch it.
• Select the position where the indoor unit can receive
thesignalfromtheremotecontrollerproperly.Check
thatsignalsfromtheremotecontrolleraresurelyre-
ceived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fluorescentlampsare
used,thesignalfromthewirelessremotecontrollermay
not be received.
OUTDOOR UNIT
• Where it is not exposed to strong wind.
• Whereairowisgoodanddustless.
• Where rain or direct sunlight can be avoided as much
as possible.
• Whereneighboursarenotannoyedbyoperation
sound or hot air.
• Where rigid wall or support is available to prevent the
increase of operation sound or vibration.
• Where there is no risk of combustible gas leakage.
• When installing the unit at a high level, be sure to
secure the unit legs.
• Whereitisatleast3mawayfromtheantennaof
TVsetorradio.Operationoftheairconditionermay
interfere with radio or TV reception in areas where re-
ceptionisweak.Anampliermayberequiredforthe
affected device.
• Installtheunithorizontally.
• Pleaseinstallitinanareanotaffectedbysnowfallor
blowingsnow. In areas withheavysnow, please in-
stallacanopy,apedestaland/orsomebafeboards.
Note:
It is advisable to make a piping loop near outdoor unit
so as to reduce vibration transmitted from there.
Note:
When operating the air conditioner in low outside tem-
perature, be sure to follow the instructions described
below.
• Never install the outdoor unit in a place where
its air inlet/outlet side may be exposed directly to
wind.
• To prevent exposure to wind, install the outdoor
unit with its air inlet side facing the wall.
• To prevent exposure to wind, it is recommended
toinstallabafeboardontheairoutletsideofthe
outdoor unit.
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cookingareasandfac-
tories, in which the properties of plastic could be
changedanddamaged).
• Saltyplacessuchastheseaside.
• Where sulfide gas is generated such as a hot
spring.
• Wherethereishigh-frequencyorwirelessequip-
ment.
• Where there is emission of high levels of VOCs,
includingphthalatecompounds,formaldehyde,
etc.,whichmaycausechemicalcracking.
Model names are indicated in 1-3.
When installing multi units, refer to
the installation manual of the multi
unit for outdoor unit installation.
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Indoor unit
Wall hole
sleeve(C)
Cut off the extra
length. Pipexingband
(E)
Wallholecover(D)
Seal the wall hole
gapwithputty(H).
Fix the pipe to wall
withpipexing
band(E).
Fixing screw
(F)
1-3. SPECIFICATIONS
1-4. INSTALLATION DIAGRAM
ACCESSORIES
Check the following parts before installation.
(1) Drain hose* 1
(2) Remote controller holder 1
(3) Fixingscrewfor(2)3.5×16mm(Black) 2
(4) Pipe cover 1
(5) Band 2
(6) Battery(AAA)for(12) 2
(7) Indoor unit mounting bracket 1
(8) Fixingscrewfor(7)4×25mm 5
(9) Woodscrewforindoorunitxation 4
(10) Washerof(9) 4
(11) Felttape(Forleftorleft-rearpiping) 1
(12) Wireless remote controller 1
(13) Aircleaninglter 2
* Note:
The Drain hose is connected to the unit.
<Outdoor unit>
(14) Drainsocket(VEtypeonly) 1
Unitsshouldbeinstalledbylicensed
contractor according to local code
requirements.
Aftertheleaktest,applyinsulatingmaterialtightlysothatthereisnogap.
Be sure to use wall hole
sleeve(C)topreventindoor/
outdoorconnectingwire(A)
from contacting metal parts
in the wall and to prevent
damagebyrodentsincase
the wall is hollow.
PARTS TO BE PROVIDED AT YOUR SITE
(A) Indoor/outdoor unit connecting wire* 1
(B) Extension pipe 1
(C) Wall hole sleeve 1
(D) Wall hole cover 1
(E) Pipexingband 2 to 5
(F) Fixingscrewfor(E)4×20mm 2 to 5
(G) Piping tape 1
(H) Putty 1
(I) Drain hose (or soft PVC hose, 15 mm inner dia. or
hardPVCpipeVP16) 1 or 2
(J) Refrigeration oil 1
(K) Powersupplycord* 1
* Note:
Placeindoor/outdoorunitconnectingwire(A)and
powersupplycord(K)atleast1mawayfromtheTV
antenna wire.
150 mm or below fromtheoor
100 mm or more
No obstruction
100 mm or more
*1 Connect to the power switch which has a gap of 3 mm
or more when open to interrupt the source power phase.
(When the power switch is shut off, it must interrupt all
phases.)
*2 Usewiresinconformitywithdesign60245IEC57.
*3 Neverusepipeswiththicknesslessthanspecied.The
pressureresistancewillbeinsufcient.
*4 Useacopperpipeoracopper-alloyseamlesspipe.
*5 Be careful not to crush or bend the pipe during pipe bend-
ing.
*6 Refrigerant pipe bending radius must be 100 mm or more.
*7 Ifpipelengthexceeds 7m,additionalrefrigerant (R410A)
charge is required. (No additional charge is required for
pipelengthlessthan7m.)
 Additionalrefrigerant=A×(pipelength(m)–7)
*8 Insulation material : Heat resisting foam plastic 0.045
specicgravity
*9 Be suretousetheinsulationofspeciedthickness.Ex-
cessivethicknessmaycauseincorrectinstallationofthe
indoorunitandinsufcientthicknessmaycausedewdrip-
page.
Model Powersupply*1 Wirespecications*2 Pipe size
(thickness*3,*4)
Indoor unit Outdoor unit Rated Voltage Frequency Breaker
capacity
Powersupply
(3-core) Indoor/outdoor connecting wire Gas / Liquid
MFZ-KJ25VE
MFZ-KJ35VE MUFZ-KJ25VE MUFZ-KJ35VE 230 V 50 Hz 10 A 1.0 mm24-core
2.0 mm2
ø9.52 / 6.35 mm
(0.8mm)
MFZ-KJ50VE MUFZ-KJ50VE(HZ) 16 A 2.0 mm2ø12.7 / 6.35 mm
(0.8mm)
(KJ25,35/KJ50)
Pipe length and height difference
Max. pipe length 20/30 m
Max. height difference 12/15 m
Max. number of bends *5, *6 10
Refrigerant adjustment A *7 30/20 g/m
Insulation thickness *8, *9 8 mm
(KJ25,35/KJ50)
100/500 mm or more
100 mm
or more
(KJ25,35/KJ50)
200/500 mm or more
350 mm
or more
100 mm
or more
Appearance of the
outdoorunitmaydiffer
from some models.
Air inlet
Air outlet
Outdoor unit installation(KJ25,35/KJ50)
2/4-10mm×21mmslot
800/840 mm
150/175
mm 500 mm
344.5/390 mm
285/330 mm
304-325/349-371 mm
40 mm
When the piping is to be attached to a wall containing metals (tin
plated)ormetalnetting,useachemicallytreatedwoodenpiece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.
Drain piping for outdoor unit
<VE type only>
• Provide drain piping before indoor and outdoor
piping connection.
•Connectdrainhose(I)I.D.15mmasshownin
the illustration.
• Make sure to provide drain piping with a down-
hillgradeforeasydrainow.
(14) (I)
Note:
Installtheunithorizontally.
Donotusedrainsocket(14)incoldregions.
Drainmayfreezeandmakethefanstop.
The outdoor unit produces condensate during
the heating operation. Select the installation
place to ensure to prevent the outdoor unit and/
orthegroundsfrombeingwetbydrainwateror
damagedbyfrozendrainwater.
IMPORTANT NOTES
Tocomplywiththerequirements
of Australian standard AS/NZS
3000 electrical installations (wir-
ingrules),theelectricalwiring
required between the indoor and
outdoorunitsmustbeinstalledby
a licenced electrical contractor.
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Wall
Outdoor
side
2-2. HOLE DRILLING
1)Determinethewallholeposition.
2)Drill a dia.65mmhole(dia.75mmforKJ50).Theoutdoorside
should be 5 to 7 mm lower than the indoor side.
3)Insertwallholesleeve(C).
2-1. FIXING OF INDOOR UNIT MOUNTING BRACKET
• Findastructuralmaterial(suchasastud)inthewallandxbracket(7)horizontallywithxingscrews(8).
• Topreventbracket(7)fromvibrating,besuretoinstallthexingscrewsintheholesindicatedintheillustration.Foraddedsupport,xingscrewsmay
also be installed in other holes.
2. INDOOR UNIT INSTALLATION
FOR RIGHT DOWNWARD OR LEFT DOWN-
WARD PIPING
(Thefollowinggureisaviewofthebottomof
theindoorunitfromabove.)
FOR REAR OR LEFT-REAR PIPING
(Thefollowinggureisafrontview
oftheindoorunitinstallationlocation.)
FOR LEFT PIPING FOR RIGHT PIPING
HOLE POSITIONS
ø65mm(KJ25/35)
ø75mm(KJ50) 5 - 7 mm
2-3. INDOOR UNIT PREPARATION
Remove the front panel of the indoor unit.
1)Pushdownthetabonthebothsidesoftheunittoopenthefrontpanel.
2)Pullthefrontpaneltowardyoutoremoveit.
3)Removethe2screws.
4)Opentherearhorizontalvane.
5)Pushthe2locationsonthetopofthepanel,andthenpulltheupperpartofthepaneltowardyou.
6)Removethepanelwhileliftingitup(slightly).
Rear horizontal
vane
Panel
Panel Push Indoor unit
60
60
6030
6030
Front panel
Front panel
Indoor unit
Indoor
side
Rear horizontal
vane
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2-4-3. EMBEDDING THE INDOOR UNIT IN A WALL
1. Make a hole in the wall.
2. Using reinforcement material, adjust the depth.
3.Remove6screwsthatxthebasetotheunit.Removethebasefrom
the unit.
4.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)and
washers(10).Tightenthescrewssecurely.
4
575
740
70
4
333
333
705
2-4. INDOOR UNIT INSTALLATION
2-4-1. INSTALLING THE INDOOR UNIT ON THE FLOOR
1.Placetheindoorunitontheatoor.
2.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)and
washers(10).Tightenthescrewssecurely.
2-4-2. MOUNTING THE INDOOR UNIT ON THE WALL
1. Hookthetopoftheindoorunitontheindoorunitmountingbracket(7).
2.Fixtheindoorunitat4pointswiththeincludedwoodscrews(9)and
washers(10).Tightenthescrewssecurely.
405
137
387
Indoor terminal block
Indoor/outdoor unit
connecting wire (A)
Outdoor terminal block
Earth wire
(green/yellow)
• Makeearthwirealittlelongerthanothers.(Morethan45mm)
• For future servicing, give extra length to the connecting wires.
• Do not fold the excess wire, or cram it into small space. Take caution not to
damage the wires.
• Be sure to attach each screw to its correspondent terminal when securing the
cord and/or the wire to the terminal block.
2-5. CONNECTING WIRES FOR INDOOR UNIT
1)RemoveVAclamp.
2)Passindoor/outdoorunitconnecting wire(A)fromtheback oftheindoorunit
and process the end of the wire.
3)Loosen terminal screw, and connect rst the earth wire, then indoor/outdoor
unitconnectingwire(A)totheterminalblock.Becarefulnottomakemis-
wiring.Fixthewiretotheterminalblocksecurelysothatnopartofitscoreis
appeared,andnoexternalforceisconveyedtotheconnectingsectionofthe
terminal block.
4)Firmlytightentheterminalscrewstopreventthemfromloosening.Aftertight-
ening,pullthewireslightlytoconrmthattheydonotmove.
5)Secureindoor/outdoorunitconnectingwire(A)andtheearthwirewiththeVA
clamp. Never fail to hook the left claw of the VA clamp. Attach the VA clamp
securely.
Terminal block
Fixing screw
Indoor/outdoor unit
connectingwire(A)
VA clamp
Lead wire
35 mm 15 mm
2-6. PIPE FORMING AND INSTALLATION
Pipe Forming
• Routethedrainhosediagonallybelowtheconnectingpipes.
• Make sure that the drain hose is not routed upward and that there are no
waves in the hose.
• Donotpullthehosewhenapplyingthetape.
• Route the piping so that it does not project past the rear of the indoor unit. (Refer
totheguretotheright.)
Connecting Pipe Installation
• Installtheconnectingpipessothatthepipingcanmoveslightlytothefront,
back, left, and right.
Piping
tape
Drain hose
Refrigerant
piping
Piping bent out-
ward Push
• Besuretoinsulatetheconnectingpipessothattheydonotcontactthepanel.
• Be careful not to crush the connecting pipes when bending them.
Remove the cover.
RIGHT DOWNWARD PIPING OTHER PIPING
Band(5)
Pipecover(4)
Band(5)
Reinforcement
material
Unit
Base
JG79A867H01_en.indd 4 2014/02/07 15:45:01

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Do not make drain piping as shown below.
Accumulated
drain water
Air
Waving
Water
leakage
Do not raise
Water
leakage Water
leakage
Tip of drain
hose dipped
in water
Ditch
At least
50 mm
gap
Downward
slope
Drain
hose
Soft hose
I.D. 15 mm
Drain hose
Hardvinylchloride
pipe I.D. 30 mm
Insert
securely
Different
diameter joint
70 cm or
more
Fig. 1 Fig. 2 Fig. 3
2-7. DRAIN PIPING
• Iftheextensiondrainhosehastopassthrougharoom,besuretowrapitwithcommerciallysoldinsulation.
• Thedrainhoseshouldpointdownwardforeasydrainow.(Fig.1)
• Ifthedrainhoseprovidedwiththeindoorunitistooshort,connectitwithdrainhose(I)thatshouldbeprovidedatyoursite.(Fig.2)
• Whenconnectingthedrainhosetothehardvinylchloridepipe,besuretoinsertitsecurelyintothepipe.(Fig.3)
2-8. FRONT PANEL INSTALLATION
1)Opentherearhorizontalvane.
2)Attachthepanel.Makesurethatthecatchesareengaged.
3)Fixthepanelwithscrews.
4)Insertthebottompartofthefrontpanel.
5)Push3placesontheupperpartofthefrontpaneltocloseit.
Wrap the felt tape (11) tightly around the pipes and hose starting near where
the pipes and hose are routed from the indoor unit. (The overlap width of the felt
tape(11)shouldnotbemorethan1/2ofthetapewidth.)
Felttape(11)
Startwrappingthepipingtape(G)around
the pipes and hose 10 mm inside the
indoor unit.
Fastentheendofthefelttape(11)with
a bandage stopper.
Make sure that the drain hose
is not routed upward.
FOR LEFT OR LEFT-REAR PIPING
Bundle the connecting pipes and drain hose together, and then wrap them in felt
tape(11).
Cut and use the lower side panels on the left and right sides of the indoor unit as
shown below.
Smooththecutedgesofthesidepanelssothattheywillnotdamagetheinsulation
coating.
• For left or right piping
• Installingushagainstawallwithmolding
Molding
Cut the lower side panels to
match the height of the molding.
Fig. 5
Projection
Make sure to
hook the catch.
Drain hose
Pull the hose to
conrmit is con-
nectedsecurely.
Fig. 4
The Drain hose is removed at installation.
• When routing the drain piping, make sure that the drain
hose(1)isroutedasshown.(Fig.4)
• Insertthedrainhoseallthewaytothebaseofthedrain
pan(endconnection).(Fig.5)
Makesurethatthecatchofthedrainhoseissecurely
hookedontotheprojectiononthehosettingofthedrain
pan.
• After connecting the drain hose, be sure to pull the hose to
conrmthatitisconnectedsecurely.
Front panel
Indoor unit
Indoor unit
Panel
Panel
2-9. CONNECTING AN INTERFACE (option)/CONNECTOR CABLE (option) TO THE AIR CONDITIONER
Thin part of the connecting cable.
Place this part where customers
cannot touch it.
Room air
conditioner Mainbodyofaninterface
Thick part of the connecting cable
Indoor control
P.C. board CN105 for interface
CN104 for connector cable
• Connect an interface/connector cable to the indoor control P.C.
board of an air conditioner with a connecting cable.
• Cutting or extending the connecting cable of the interface/
connector cable results in defects in connecting. Do not
bundletheconnectingcabletogetherwithpowersupplycord,
indoor/outdoor connecting wire, and/or earth wire. Keep as
much distance as possible between the connecting cable and
those wires.
• The thin part of the connecting cable should be stored and
placed where customers cannot touch it.
Rear horizontal
vane
JG79A867H01_en.indd 5 2014/02/07 15:45:02

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1)Removethepanel.
2)OpenthecoveroftheindoorcontrolP.C.board.
3)JointheconnectingcabletoCN105and/orCN104ontheindoorcontrolP.C.board.
4)Routetheconnectingcablethroughthispointinthegure.
5)Attachthecableclampprovidedwithinterface/connectorcabletothethickpartofthe
connectingcablewithascrew4×16asshowninthegure.
6)ClosethecoveroftheindoorcontrolP.C.board.Becarefulnottocatchthethinpart
of the connecting cable in the cover. Reinstall the panel.
5)
4)
3)CN105
WARNING
Fix the connecting cable at the prescribed position securely.
Incorrect installation may cause electric shock, re, and/ or malfunction.
3. OUTDOOR UNIT INSTALLATION
3-2. FLARING WORK
1)Cutthecopperpipecorrectlywithpipecutter.(Fig.1,2)
2)Completelyremoveallburrsfromthecutcrosssectionofpipe.(Fig.3)
• Puttheendofthecopperpipetodownwarddirectionasyouremoveburrsin
order to avoid to let burrs drop in the piping.
3)Removearenutsattachedtoindoorandoutdoorunits,thenputthemonpipehaving
completedburrremoval.(Notpossibletoputthemonafteraringwork.)
4)Flaringwork(Fig.4,5).Firmlyholdcopperpipeinthedimensionshowninthetable.
SelectAmmfromthetableaccordingtothetoolyouuse.
5)Check
• ComparethearedworkwithFig.6.
• Ifareisnotedtobedefective,cutoffthearedsectionanddoaringworkagain.
3-3. PIPE CONNECTION
• Fastenarenutwithatorquewrenchasspeciedinthetable.
• Whenfastenedtootight,arenutmaybreakafteralongperiodandcauserefrigerantleakage.
• Be sure to wrap insulation around the piping. Direct contact with the bare piping may result in burns or
frostbite.
Indoor unit connection
Connect both liquid and gas pipings to indoor unit.
• Applyathincoatofrefrigerationoil(J) on the ared ends of the pipes. Do not apply refrigeration oil on
screw threads. Excessive tightening torque will result in damage on the screw.
• Forconnection,rstalignthecenter,thentightentherst3to4turnsofarenut.
• Use tightening torque table above as a guideline for indoor unit side union joint section, and tighten using
twowrenches.Excessivetighteningdamagesthearesection.
Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the same manner applied for indoor unit.
• For tightening, use a torque wrench or spanner and use the same tightening torque applied for indoor unit.
3-4. INSULATION AND TAPING
1)Coverpipingjointswithpipecover.
2)Foroutdoorunitside,surelyinsulateeverypipingincludingvalves.
3)Usingpipingtape(G),applytapingstartingfromtheentryofoutdoorunit.
• Stoptheendofpipingtape(G)withtape(withadhesiveagentattached).
• Whenpipinghavetobearrangedthroughaboveceiling,closetorwherethetemperatureandhumidity
arehigh,windadditionalcommerciallysoldinsulationtopreventcondensation.
Pipe diameter
(mm) Nut (mm)
A(mm) Tightening torque
Clutchtype
tool
for R410A
Clutchtype
tool
for R22
Wing nut
typetool
for R22 N•m kgf•cm
ø6.35(1/4”) 17
0 to 0.5 1.0 to 1.5 1.5 to 2.0 13.7 to 17.7 140 to 180
ø9.52(3/8”) 22 34.3 to 41.2 350 to 420
ø12.7(1/2”) 26 2.0 to 2.5 49.0 to 56.4 500 to 575
ø15.88(5/8”) 29 73.5 to 78.4 750 to 800
Copper
pipe
Good
Tilted Uneven Burred
No good
Fig. 1 Fig. 2
Burr Copper pipe
Spare reamer
Pipe cutter
Clutchtype
Flaring tool
Fig. 4
Fig. 3
Smooth all
around
Even length
all around
Inside is shining
withoutany
scratches.
Flare nut
Die
Fig. 5 Fig. 6
Copper
pipe
Wingnuttype
WARNING
When installing the unit, securely
connect the refrigerant pipes before
starting the compressor.
3-1. CONNECTING WIRES FOR OUTDOOR UNIT
1)Opentheservicepanel.
2)Loosenterminalscrew,andconnectindoor/outdoorunitconnectingwire(A)fromthe
indoorunitcorrectlyontheterminalblock.Becarefulnottomakemis-wiring.Fixthe
wiretotheterminalblocksecurelysothatnopartofitscoreisappeared,andnoex-
ternalforceisconveyedtotheconnectingsectionoftheterminalblock.
3)Firmly tighten the terminal screws to prevent them from loosening. After tightening,
pullthewireslightlytoconrmthattheydonotmove.
4)Connectpowersupplycord(K).
5)Fixindoor/outdoorunitconnecting wire(A)andpowersupply cord(K)with thecord
clamp.
6)Closetheservicepanelsecurely.
• Makeearthwirealittlelongerthanothers.(Morethan100mm)
• For future servicing, give extra length to the connecting wires.
• Be sure to attach each screw to its correspondent terminal when securing the cord and/or
the wire to the terminal block.
Terminal block
Cord clamp
Terminal block
Powersupply
cord(K)
15 mm
35 mm
Lead wire
<KJ25, 35> <KJ50>
Indoor/outdoor
unit connecting
wire(A)
Power supply
cord (K)
When mounting the
interface and the
connector cable, use
thisscrewtoxthe
connecting cable.
3)CN104
JG79A867H01_en.indd 6 2014/02/07 15:45:03

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Whenrelocatingordisposingoftheairconditioner,pumpdownthesystemfollowingtheprocedurebelowsothatnorefrigerantisreleasedintotheatmos-
phere.
1)Connectthegaugemanifoldvalvetotheserviceportofthestopvalveonthegaspipesideoftheoutdoorunit.
2)Fullyclosethestopvalveontheliquidpipesideoftheoutdoorunit.
3)Closethestopvalveonthegaspipesideoftheoutdoorunitalmostcompletelysothatitcanbeeasilyclosedfullywhenthepressuregaugeshows0
MPa [Gauge] (0 kgf/cm2).
4)StarttheemergencyCOOLoperation.
To start the emergencyoperationinCOOLmode,disconnectthepowersupplyplugand/orturnoffthebreaker.After15seconds,connectthepower
supplyplugand/orturnonthebreaker,andthenpresstheE.O.SWonce.(TheemergencyCOOLoperationcanbeperformedcontinuouslyforupto
30minutes.)
5)Fullyclosethestopvalveonthegaspipesideoftheoutdoorunitwhenthepressuregaugeshows0.05to0MPa[Gauge](approx.0.5to0kgf/cm2).
6)StoptheemergencyCOOLoperation.
Press the E.O. SW twice to stop the operation.
5. PUMPING DOWN
4-4. EXPLANATION TO THE USER
• UsingtheOPERATINGINSTRUCTIONS,explaintotheuserhowtousetheairconditioner(howtousetheremotecontroller,howtoremovetheairl-
ters,howtoremoveorputtheremotecontrollerintheremotecontrollerholder,howtoclean,precautionsforoperation,etc.)
• RecommendtheusertoreadtheOPERATINGINSTRUCTIONScarefully.
Caution:
• Aftertestrunorremotesignalreceptioncheck,turnofftheunitwiththeE.O.SWortheremotecontrollerbeforeturningoffthepowersupply.Notdo-
ingsowillcausetheunittostartoperationautomaticallywhenpowersupplyisresumed.
To the user
• After installing the unit, make sure to explain the user about auto restart function.
• Ifautorestartfunctionisunnecessary,itcanbedeactivated.Consulttheservicerepresentativetodeactivatethefunction.Refertotheservicemanual
for details.
4-3. AUTO RESTART FUNCTION
Thisproductisequippedwithanautorestartfunction.Whenthepowersupplyisstoppedduringoperation,suchasduringblackouts,thefunctionautomati-
callystartsoperationintheprevioussettingoncethepowersupplyisresumed.(Refertotheoperatinginstructionsfordetails.)
4-2. TEST RUN
Make sure the following is done.
•Panelisinstalledcorrectly.
•Indoorandoutdoorunitsareinstalledcorrectly,andpowerissupplied.
1)PresstheE.O.SWonceforCOOL, and twice for HEAT operation. Test run will be performed for 30 minutes. If the left lamp
oftheoperationindicatorblinksevery0.5seconds,inspecttheindoor/outdoorunitconnectingwire(A)formis-wiring.After
thetestrun,emergencymode(settemperature24ºC)willstart.
2)Tostopoperation,presstheE.O.SWseveraltimesuntilallLEDlampsturnoff.Refertooperatinginstructionsfordetails.
Checking the remote (infrared) signal reception
PresstheON/OFFbuttonontheremotecontroller(12)andcheckthatanelectronicsoundisheardfromtheindoorunit.Press
the ON/OFF button again to turn the air conditioner off.
• Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to pro-
tect the air conditioner.
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
Emergencyoperation
switch(E.O.SW)
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
WARNING
4-1. PURGING PROCEDURES AND LEAK TEST
Stop valve for
GAS
Stop valve cap
(Torque 19.6 to
29.4 N•m, 200
to300kgf•cm)
Vacuum pump (or the vacuum
pump with the function to
preventthebackow)
Gauge manifold valve
(forR410A)
Compound pressure gauge
(forR410A)
–0.101 MPa
(–760mmHg)
Handle
Low Handle High
Adapter for pre-
venting the back
ow
Charge hose
(forR410A)
*Close
*Open
Hexagonal wrench
Precautions when using the control valve When attaching the control valve to
theserviceport,valvecoremayde-
form or loosen if excess pressure is
applied.Thismaycausegasleak.
Service port
Body
Close
Open
Control valve
A
When attaching the control valve to
the service port, make sure that the
valve core is in closed position, and
then tighten part A. Do not tighten
partAorturnthe bodywhenvalve
core is in open position.
Service port cap
(Torque 13.7 to
17.7 N•m, 140 to
180 kgf•cm)
*4 to 5 turns
1)Removeservice port cap of stopvalveonthesideof the
outdoorunitgaspipe.(Thestopvalvesarefullyclosedand
coveredincapsininitialstate.)
2)Connectgaugemanifoldvalveandvacuumpumptoserv-
ice port of stop valve on the gas pipe side of the outdoor
unit.
3)Runthevacuumpump.(Vacuumizeformorethan15min-
utes.)
4)Checkthe vacuum with gauge manifold valve, then close
gauge manifold valve, and stop the vacuum pump.
5)
Leave as it is for one or two minutes. Make sure pointer
gaugemanifoldvalveremainsinthesameposition.Conrm
thatpressuregaugeshows–0.101MPa[Gauge](–760
mmHg).
6)Removegaugemanifoldvalvequicklyfromserviceportof
stop valve.
7)Afterrefrigerantpipesare connectedandevacuated, fully
open all stop valves on both sides of gas pipe and liquid
pipe. Operating without fully opening lowers the perform-
ance and this causes trouble.
8)Referto1-3.,andchargetheprescribedamountofre-
frigerantifneeded.Besuretochargeslowlywithliquid
refrigerant. Otherwise, composition of the refrigerant in the
systemmaybechangedandaffectperformanceoftheair
conditioner.
9)Tightencapofserviceporttoobtaintheinitialstatus.
10)Leaktest
Stop valve
for LIQUID
Pressure gauge
(forR410A)
Charge hose
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JG79A867H01
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