Daikin FTXS20K2V1B User manual

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MODELS
FTXS20K2V1B
FTXS25K2V1B
CTXS15K2V1B
CTXS35K2V1B
DAIKIN ROOM AIR CONDITIONER
INSTALLATION MANUAL
R410A Split Series
Installation manual
Installationsanleitung
Manuel dinstallation
Installatiehandleiding
Manual de instalación
Manuale dinstallazione
Εγχειρίδιο εγκατάστασης
Manual de instalação
Руководство по монтажу
Montaj kılavuzları
Manuel dinstallation
Manuale dinstallazione
00_CV_3P297034-1.indd 1 10/31/2011 2:09:38 PM

Umeda Center Bldg., 2-4-12, Nakazaki-Nishi, Kita-ku, Osaka, 530-8323 Japan
DAIKIN INDUSTRIES, LTD.
Low Voltage 2006/95/EC
Electromagnetic Compatibility 2004/108/EC
*
3SB65451-1
FTXS20K2V1B, FTXS25K2V1B, CTXS15K2V1B, CTXS35K2V1B
Shinri Sada Manager Quality Control Department
DAIKIN.TCF.015 N20/09-2011 DEKRA Certification B.V. (NB0344) 74736-KRQ/EMC97-4957
, ,
3SB65451-1.fm Page 1 Thursday, October 27, 2011 4:40 PM

Umeda Center Bldg., 2-4-12, Nakazaki-Nishi, Kita-ku, Osaka, 530-8323 Japan
, ,
FTXS20K2V1B, FTXS25K2V1B, CTXS15K2V1B, CTXS35K2V1B
3SB65451-2
Shinri Sada Manager Quality Control Department
3SB65451-2.fm Page 1 Thursday, October 27, 2011 4:43 PM

3SB65451-2.fm Page 2 Thursday, October 27, 2011 4:43 PM

1■English
Safety Precautions
•TheprecautionsdescribedhereinareclassiedasWARNINGandCAUTION.Theybothcontainimportantinforma-
tionregardingsafety.Besuretoobserveallprecautionswithoutfail.
•MeaningofWARNINGandCAUTIONnotices
WARNING ........ Failure to follow these instructions properly may result in personal injury or loss of life.
CAUTION ......... Failure to observe these instructions properly may result in property damage or personal injury, which
may be serious depending on the circumstances.
•Thesafetymarksshowninthismanualhavethefollowingmeanings:
Besuretofollowtheinstructions. Besuretoestablishanearthconnection. Neverattempt.
•Aftercompletinginstallation,conductatrialoperationtocheckforfaultsandexplaintothecustomerhowtooperate
theairconditionerandtakecareofitwiththeaidoftheoperationmanual.
WARNING
•Askyourdealerorqualiedpersonneltocarryoutinstallationwork.
Donotattempttoinstalltheairconditioneryourself.Improperinstallationmayresultinwaterleakage,electricshocksorre.
•Installtheairconditionerinaccordancewiththeinstructionsinthisinstallationmanual.
Improperinstallationmayresultinwaterleakage,electricshocksorre.
•Besuretouseonlythespeciedaccessoriesandpartsforinstallationwork.
Failuretousethespeciedpartsmayresultintheunitfalling,waterleakage,electricshocksorre.
•Installtheairconditioneronafoundationstrongenoughtowithstandtheweightoftheunit.
Afoundationofinsufcientstrengthmayresultintheequipmentfallingandcausinginjury.
•Electricalworkmustbeperformedinaccordancewithrelevantlocalandnationalregulationsandwithinstructions
inthisinstallationmanual.Besuretouseadedicatedpowersupplycircuitonly.
Insufciencyofpowercircuitcapacityandimproperworkmanshipmayresultinelectricshocksorre.
•Useacableofsuitablelength.
Donotusetappedwiresoranextensionlead,asthismaycauseoverheating,electricshocksorre.
•Makesurethatallwiringissecured,thespeciedwiresareused,andthatthereisnostrainontheterminal
connectionsorwires.
Improperconnectionsorsecuringofwiresmayresultinabnormalheatbuild-uporre.
•Whenwiringthepowersupplyandconnectingthewiringbetweentheindoorandoutdoorunits,positionthewires
sothatthecontrolboxlidcanbesecurelyfastened.
Improperpositioningofthecontrolboxlidmayresultinelectricshocks,reoroverheatingterminals.
•Ifrefrigerantgasleaksduringinstallation,ventilatetheareaimmediately.
Toxicgasmaybeproducediftherefrigerantcomesintocontactwithre.
•Aftercompletinginstallation,checkforrefrigerantgasleakage.
Toxicgasmaybeproducediftherefrigerantgasleaksintotheroomandcomesintocontactwithasourceofre,suchasafanheater,
stoveorcooker.
•Wheninstallingorrelocatingtheairconditioner,besuretobleedtherefrigerantcircuittoensureitisfreeofair,
anduseonlythespeciedrefrigerant(R410A).
Thepresenceofairorotherforeignmatterintherefrigerantcircuitcausesabnormalpressurerise,whichmayresultinequipmentdamageand
eveninjury.
•Duringinstallation,attachtherefrigerantpipingsecurelybeforerunningthecompressor.
Iftherefrigerantpipesarenotattachedandthestopvalveisopenwhenthecompressorisrun,airwillbesuckedin,causingabnormal
pressureintherefrigerationcycle,whichmayresultinequipmentdamageandeveninjury.
•Duringpump-down,stopthecompressorbeforeremovingtherefrigerantpiping.
Ifthecompressorisstillrunningandthestopvalveisopenduringpump-down,airwillbesuckedinwhentherefrigerantpipingisremoved,
causingabnormalpressureintherefrigerationcycle,whichmayresultinequipmentdamageandeveninjury.
•Besuretoearththeairconditioner.
Donotearththeunittoautilitypipe,lightningconductorortelephoneearthlead.Imperfectearthingmayresultinelectricshocks.
•Besuretoinstallanearthleakagebreaker.
Failuretoinstallanearthleakagebreakermayresultinelectricshocksorre.
CAUTION
•Donotinstalltheairconditioneratanyplacewherethereisadangerofammablegasleakage.
Intheeventofagasleakage,build-upofgasneartheairconditionermaycausearetobreakout.
•Whilefollowingtheinstructionsinthisinstallationmanual,installdrainpipingtoensureproperdrainageand
insulatepipingtopreventcondensation.
Improperdrainpipingmayresultinindoorwaterleakageandpropertydamage.
•Tightenthearenutaccordingtothespeciedmethodsuchaswithatorquewrench.
Ifthearenutistootight,itmaycrackafterprolongeduse,causingrefrigerantleakage.
01_EN_3P297034-1.indd 1 10/12/2011 11:36:58 AM

English
■English 2
Accessories
Indoor unit A– H,
 Mountingplate 1 Remotecontrollerholder 1 Operationmanual 1
 Titaniumapatitephotocatalytic
air-purifyinglter 2 DrybatteryAAA.LR03 (alkaline) 2 Installationmanual 1
 Wirelessremotecontroller 1 Indoorunitxingscrew
(M4×12L) 2
Choosing an Installation Site
•Beforechoosingtheinstallationsite,obtainuserapproval.
1. Indoor unit
•Theindoorunitshouldbesitedinaplacewhere:
1)therestrictionsoninstallationspeciedintheindoorunitinstallationdrawingsaremet,
2)bothairinletandairoutlethaveclearpathsmet,
3)theunitisnotinthepathofdirectsunlight,
4)theunitisawayfromthesourceofheatorsteam,
5)thereisnosourceofmachineoilvapour(thismayshortenindoorunitlife),
6)cool(warm)airiscirculatedthroughouttheroom,
7)theunitisawayfromelectronicignitiontypeuorescentlamps(inverterorrapidstarttype)astheymayshortenthe
remotecontrollerrange,
8)theunitisatleast1mawayfromanytelevisionorradioset(unitmaycauseinterferencewiththepictureorsound),
9)installattherecommendedheight(1.8m),
10)nolaundryequipmentislocated.
2. Wireless remote controller
•Turnonalltheuorescentlampsintheroom,ifany,andndthesitewhereremotecontrollersignalsareproperly
receivedbytheindoorunit(within7m).
ADG
BEH
CF
01_EN_3P297034-1.indd 2 10/12/2011 11:36:58 AM

3■English
Preparation before Installation
1. Removing and installing front panel
•Removal method
1)Placeyourngersintheindentationsonthemainunit(oneeachonthe
leftandrightsides),andopenthefrontpaneluntilitstops.
2)Continuetoopenthefrontpanelfurtherwhileslidingthepaneltothe
rightandpullingittowardyouinordertodisengagetherotatingshafton
theleftside.Todisengagetherotatingshaftontherightside,slidethe
paneltotheleftwhilepullingittowardyou.
•Installation method
Alignthetabsofthefrontpanelwiththegrooves,andpushallthewayin.
Thencloseslowly.Pushthecentreofthelowersurfacepanelrmlyto
engagethetabs.
Push the rotating
shaft of the front
panel into the groove.
Rotating shaft
2. Removing and installing front grille
•Removal method
1)Removefrontpaneltoremovetheairlter.
2)Removethe2screwsfromthefrontgrille.
3)Infrontofthe markofthefrontgrille,thereare3upperhooks.
Lightlypullthefrontgrilletowardyouwithonehand,andpushdownon
thehookswiththengersofyourotherhand.
Upper hook mark area
(3 locations)
Push
down.
Upper hook
When there is no work space because the unit is close to ceiling
CAUTION
•Besuretowearprotectiongloves.
Placebothhandsunderthecenterofthefrontgrille,andwhilepushingup,pullittowardyou.
•Installation method
1)Installthefrontgrilleandrmlyengagetheupperhooks(3locations).
2)Install2screwsofthefrontgrille.
3)Installtheairlterandthenmountthefrontpanel.
1) Push up.
2) Pull toward you.
3. How to set the different addresses
Whentwoindoorunitsareinstalledinoneroom,thetwowirelessremotecontrollers
canbesetfordifferentaddresses.
1)InthesamewayaswhenconnectingtoanHAsystem,removethemetalplate
electricalwiringcover.
2)Cuttheaddressjumper(JA)ontheprintedcircuitboard.
3)Cuttheaddressjumper(J4)intheremotecontroller.
JA
JB
JC
JA ADDRESS
EXIST 1
CUT 2
ADDRESS
J4
EXIST
CUT
1
2
Jumper
01_EN_3P297034-1.indd 3 10/12/2011 11:37:00 AM

English
■English 4
Indoor Unit Installation Drawings
Screws
(M4 × 16L)
Service lid
Caulk pipe
hole gap
with putty.
Wrap the insulation pipe
with the finishing tape
from bottom to top.
Cut thermal insulation
pipe to an appropriate
length and wrap it with
tape, making sure that no
gap is left in the insulation
pipe’s cut line.
Bottom frame
Front grille
How to attach the indoor unit
Hook the claws of the bottom frame
to the mounting plate.
If the claws are difficult to hook,
remove the front grille.
How to remove the indoor unit
Push up the marked area (at the
lower part of the front grille) to
release the claws. If it is difficult to
release, remove the front grille.
Opening service lid
Service lid is opening/closing type.
Opening method
1) Remove the service lid screw.
2) Pull out the service lid diagonally
down in the direction of the arrow.
3) Pull down.
The mounting plate
should be installed on a
wall which can support the
weight of the indoor unit.
30mm or more from ceiling
Front panel
50mm or more from walls
(on both sides)
Air filters
AMounting plate
AMounting
plate
Mounting plate
fixing screw
(field supply: M4 × 25L)
CWireless remote controller
Fixing screw for remote
controller holder
(field supply: M3 × 20L)
DRemote controller
holder
Air filter
Titanium apatite
photocatalytic
air-purifying filter
Filter frame
Tab
Titanium apatite photocatalytic
air-purifying filter (2 pcs)
Before screwing the
remote controller holder
to the wall, make sure
that control signals are
properly received by
indoor unit.
Clip
Mark (rear side)
B
01_EN_3P297034-1.indd 4 10/12/2011 11:37:01 AM

5■English
Indoor Unit Installation
1. Installing the mounting plate
•Themountingplateshouldbeinstalledonawallwhichcansupporttheweightoftheindoorunit.
1)Temporarilysecurethemountingplatetothewall,makesurethatthepaneliscompletelylevel,andmarktheboring
pointsonthewall.
2)Securethemountingplatetothewallwithscrews.
Recommended mounting plate retention spots and dimensions
780
Use tape measure
as shown.
Keep here the piece cut out
from the unit for piping unit: mm
Gas pipe end
Removed pipe
port cover
Recommended mounting plate
retention spots (5 spots in all)
Place a leveler
on raised tab.
59
330.5
241.747.3
160
59.5 50160
241.7
47.3
106
125.5
331
203 247
Drain hose position
Liquid pipe end
AMounting plate
* The removed pipe port cover can be
kept in the mounting plate pocket.
Position the end of
a tape measure at .
Through-
the-wall
hole ϕ65mm
2. Boring a wall hole and installing wall embedded pipe
•Forwallscontainingmetalframeormetalboard,besuretouseawall
embeddedpipeandwallcoverinthefeed-throughholetopreventpossible
heat,electricalshock,orre.
•Besuretocaulkthegapsaroundthepipeswithcaulkingmaterialtoprevent
waterleakage.
1)
Boreafeed-throughholeof65mminthewallsoithasadownslopetowardtheoutside.
2)Insertawallpipeintothehole.
3)Insertawallcoverintowallpipe.
4)Aftercompletingrefrigerantpiping,wiring,anddrainpiping,caulkpipe
holegapwithputty.
Inside Outside
Caulking
Wall embedded pipe
(field supply)
Wall hole cover
(field supply)
Wall embedded pipe
(field supply)
ϕ65
3. Installing indoor unit
•Inthecaseofbendingorcuringrefrigerantpipes,keepthefollowing
precautionsinmind.
Abnormalsoundmaybegeneratedifimproperworkisconducted.
1)Donotstronglypresstherefrigerantpipesontothebottomframe.
2)Donotstronglypresstherefrigerantpipesonthefrontgrille,either. 1)
2)
01_EN_3P297034-1.indd 5 10/12/2011 11:37:02 AM

English
■English 6
•Removethepipeportcoverasshownbelow.
1)Cutoffthepipeportcoverfrominsidethefrontgrilleusingacopping
saw.
Applythebladeofthecoppingsawtothenotch,andcutoffthepipe
portcoveralongtheslit.
2)Aftercuttingoffthepipeportcover,performling.Removetheburrs
alongthecutsectionusingahalfroundneedlele.
CAUTION
•Ifthepipeportcoveriscutoffusingnippers,thefrontgrillewillbedamaged.Pleasedonotusenippers.
•Wearglovesduringthepipeportcoverremoval.
3-1. Right-side, right-back, or right-bottom piping
1)Attachthedrainhosetotheundersideoftherefrigerantpipeswith
adhesivevinyltape.
2)Wraptherefrigerantpipesanddrainhosetogetherwithinsulation
tape.
Right-bottom
piping
Right-back piping
Bind coolant pipe
and drain hose
together with
insulating tape.
Remove pipe port cover
here for right-side piping.
Remove pipe port cover
here for right-bottom piping.
3)Passthedrainhoseandrefrigerantpipesthroughthewallhole,
thensettheindoorunitonthemountingplatehooksbyusingthe
markingsatthetopoftheindoorunitasaguide.
Mounting plate
A
4)Openthefrontpanel,thenopentheservicelid.
(Refertopreparationbeforeinstallation.)
5)Passtheinter-unitwirefromtheoutdoorunitthroughthe
feed-throughwallholeandthenthroughthebackoftheindoor
unit.Pullthemthroughthefrontside.Bendtheendsoftie
wiresupwardforeasierworkinadvance.(Iftheinter-unitwire
endsaretobestrippedrst,bundlewireendswithadhesive
tape.)
6)Pressthebottomframeoftheindoorunitwithbothhandsto
setitonthemountingplatehooks.Makesurethewiresdonot
catchontheedgeoftheindoorunit.
Wire guide
When stripping the
ends of inter-unit wire
in advance, bind right ends
of wires with insulating tape.
Hang indoor unit’s hook here.
Inter-unit wire
Mounting plate
A
01_EN_3P297034-1.indd 6 10/12/2011 11:37:02 AM

7■English
Indoor Unit Installation
3-2. Left-side, left-back, or left-bottom piping
How to replace the drain plug and drain hose
•Replacing onto the left side
1)Removetheinsulationxingscrewontheright
andremovethedrainhose.
2)Removethedrainplugontheleftsideand
attachittotherightside.
3)Insertthedrainhoseandtightenwithincluded
insulationxingscrew.
*(Forgettingtotightenthismaycausewater
leakages.)
Drain hose attachment position
* The drain hose is on the back of the unit.
Front side of unit
Attachment on the right side (factory default) Attachment on the left side
Drain hose Drain hose
Insulation
fixing screw
Insulation
fixing screw
Right sideLeft side
1)Attachthedrainhosetotheundersideoftherefrigerantpipes
withadhesivevinyltape.
Remove pipe port cover here for left-bottom piping.
Remove pipe
port cover
here for left-
side piping.
Left-bottom piping
Left-side
piping
Left-back
piping
2)Besuretoconnectthedrainhosetothedrainportinplaceofa
drainplug.
How to set drain plug
No gap.
Do not apply lubricating
oil (refrigeration oil)
when inserting.
Application of causes
deterioration and drain
leakage of the plug.
Insert a hexagonal wrench (4mm).
3)Shapetherefrigerantpipealongthepipe
pathmarkingonthemountingplate.
4)Passdrainhoseandrefrigerantpipes
throughthewallhole,thensettheindoor
unitonmountingplatehooks,usingthe 
markingsatthetopofindoorunitasa
guide.
5)Pullintheinter-unitwire.
6)Connecttheinter-unitpipes.
Drain
hose
Caulk this hole
with putty or
caulking material. Bind with adhesive
vinyl tape.
A
Mounting plate
Wrap insulating tape around the
bent portion of refrigerant pipe.
Overlap at least half the width of
the tape with each turn.
7)Wraptherefrigerantpipesanddrainhosetogetherwithinsulationtape
asrightgure,incaseofsettingthedrainhosethroughthebackofthe
indoorunit.
8)Whileexercisingcaresothattheinter-unitwiredonotcatchindoorunit,
pressthebottomedgeofindoorunitwithbothhandsuntilitisrmly
caughtbythemountingplatehooks.Secureindoorunittothemounting
platewithindoorunitxingscrews(M4×12L).
Refrigerant
pipes
Drain hose
Bottom frame
F Indoor unit fixing screw
(M4 × 12L) (2 points)
Mounting
plate
A
Inter-unit wire
3-3. Wall embedded piping
Followtheinstructionsgivenunderleft-side,left-back,orleft-bottompiping.
1)Insertthedrainhosetothisdepthsoitwon’tbepulledoutofthedrain
pipe.
Inner wall
Vinyl chloride
drain pipe
(VP-30)
Drain hose50mm
or more
Insert drain hose
to this depth so
it won’t be pulled
out of drain pipe.
Outer wall
01_EN_3P297034-1.indd 7 10/12/2011 11:37:03 AM

English
■English 8
4. Wiring
1)Stripwireends(15mm).
2)Matchwirecolourswithterminalnumbersonindoorandoutdoorunit’sterminalblocksandrmlyscrewwirestothe
correspondingterminals.
3)Connecttheearthwirestothecorrespondingterminals.
4)Pullwirestomakesurethattheyaresecurelylatchedup,thenretainwireswithwireretainer.
5)Shapethewiressothattheservicelidtssecurely,thencloseservicelid.
123
Terminal block
Electrical component box
Wire retainer
Use the specified
wire type.
Shape wires so that the
service lid will fit securely.
Firmly secure wire retainer so that
wires sustain no external stress.
1
2
3
1 2 3 L N
Use 2.0mm diameter wires.
H05RN
Firmly fix the wires with
the terminal screws.
Outdoor unit
Indoor
unit
Firmly fix the wires with
the terminal screws.
WARNING
•Donotusetappedwires,strandedwires,extensioncords,orstarburstconnections,astheymaycauseoverheating,
electricalshock,orre.
•Donotuselocallypurchasedelectricalpartsinsidetheproduct.(Donotbranchthepowerforthedrainpump,etc.,fromthe
terminalblock.)Doingsomaycauseelectricshockorre.
•Donotconnectthepowerwiretotheindoorunit.Doingsomaycauseelectricshockorre.
5. When connecting to a wired remote controller
* If work space is available on the right side of the indoor unit, the work
can be performed with the electrical component box attached. Omit the
steps involved with removing and installing the electrical component
boxinordertoperformtheworkmoreefciently.
5-1. Remove the front grille (2 screws).
5-2. Remove the service lid (1 screw).
5-3. Remove the cover from the electrical component
box [Figure 1].
5-4. Remove the electrical component box.
1)Removetheap.
2)Disconnecttheinter-unitwire
3)Disconnecttheconnector(S200).
4)Removethethermistorfromtheheatexchanger.
5)Removetheearthwire.
6)Removetheelectricalcomponentboxinstallationscrew(1screw).
Disengage the tab.
Figure 1: Removing the cover from
the electrical component box
Disengage the tab.
Cover of the electrical
component box
*
01_EN_3P297034-1.indd 8 10/12/2011 11:37:04 AM

9■English
Indoor Unit Installation
5-5. Prepare the accessory (optional parts) [Figure 2].
1)Removethecoverfromtheaccessory(optionalparts).
2)Inserttheconnectioncordintoconnector“S21”(white)intheaccessory(optionalparts).
3)Routeeachoftheconnectioncordsthroughthecut-outsintheaccessory,thenreinstalltheaccessorycoverinits
originalposition.
4)Inserttheaccessory(optionalparts)connectorintoconnector“S403”intheelectricalcomponentbox.
Thenroutetheconnectioncordthroughthecut-outintheelectricalcomponentbox.
5-6. Install the cover of the electrical component box in its original position [Figure 3].
5-7. Install the accessory (optional parts) [Figure 3].
1)Installtheaccessory(optionalparts)intotheelectricalcomponentbox.
2)Routetheconnectioncordasshownin[Figure3].
5-8. Install the electrical component box in its original position.
1)Installtheelectricalcomponentbox(1screw).
2)Installthethermistorinitsoriginalpositionontheheatexchanger.
3)Connecttheearthwire.
4)Installtheconnector(S200)initsoriginalposition.
5)Connecttheinter-unitwireinitsoriginalposition.
6)Installtheap.
5-9. Install the front grille in its original position (2 screws).
5-10. Install the service lid (1 screw).
Disengage the tab.
Remove the accessory cover.
Route each of the
connection cords.
Insert “S403”.
Route the connection
cords through the cut-outs.
“S21”
Accessory
Accessory
Accessory cover
Accessory
cover
Install the accessory.
Install the accessory cover
in its original position.
Cut-out for the “S403”
connection
Cut-out for the
connection cord
Figure 2: Preparing the accessory
Figure 3: Installing the accessory Cut-outs for the connection cords
01_EN_3P297034-1.indd 9 10/12/2011 11:37:06 AM

English
■English 10
6. Drain piping
1)Connectthedrainhose,asdescribedright.
The drain hose should
be inclined downward.
No trap is permitted.
Do not put the end
of the hose in water.
2)Removetheairltersandpoursomewaterintothedrainpantocheckthewaterows
smoothly.
3)Ifdrainhoseextensionorembeddeddrainpipingisrequired,useappropriatepartsthatmatchthehosefrontend.
[Figureofhosefrontend]
ϕ18ϕ16
4)Whenextendingthedrainhose,useacommerciallyavailable
extensionhosewithaninnerdiameterof16mm.
Besuretothermallyinsulatetheindoorsectionoftheextension
hose.
ϕ16
Drain hose supplied
with the indoor unit
Indoor unit
drain hose
ϕ16
Extension drain hose
Heat insulation tube
(field supply)
5)Whenconnectingarigidpolyvinylchloridepipe
(nominaldiameter13mm)directlytothedrain
hoseattachedtotheindoorunitaswithembed-
dedpipingwork,useanycommerciallyavailable
drainsocket(nominaldiameter13mm)asajoint.
Commercially available drain
socket
(nominal diameter 13mm)
Commercially available rigid
polyvinyl chloride pipe
(nominal diameter 13mm)
Drain hose supplied
with the indoor unit
ϕ18
Refrigerant Piping Work
1. Flaring the pipe end
1)Cutthepipeendwithapipecutter.
2)Removeburrswiththecutsurfacefacingdownward
sothatthechipsdonotenterthepipe.
3)Putthearenutonthepipe.
4)Flarethepipe.
5)Checkthatthearingisproperlymade.
Set exactly at the position shown below.
A
Flaring
Die A 0-0.5mm
Clutch-type
Flare tool for R410A
1.0-1.5mm
Clutch-type (Rigid-type)
1.5-2.0mm
Wing-nut type (Imperial-type)
Conventional flare tool
(Cut exactly at
right angles.) Remove burrs.
Check
Flare’s inner
surface must
be flaw-free.
The pipe end must
be evenly flared in
a perfect circle.
Make sure that the
flare nut is fitted.
WARNING
•Donotusemineraloilonaredpart.
•Preventmineraloilfromgettingintothesystemasthiswouldreducethelifetimeoftheunits.
•Neverusepipingwhichhasbeenusedforpreviousinstallations.Onlyusepartswhicharedeliveredwiththeunit.
•DoneverinstalladriertothisR410Aunitinordertoguaranteeitslifetime.
•Thedryingmaterialmaydissolveanddamagethesystem.
•Incompletearingmaycauserefrigerantgasleakage.
01_EN_3P297034-1.indd 10 10/12/2011 11:37:07 AM

11 ■English
Refrigerant Piping Work
2. Refrigerant piping
CAUTION
•Usethearenutxedtothemainunit.(Topreventcrackingofthearenutbyageddeterioration.)
•Topreventgasleakage,applyrefrigerationoilonlytotheinnersurfaceoftheare.(UserefrigerationoilforR410A.)
•Usetorquewrencheswhentighteningthearenutstopreventdamagetothearenutsandgasleakage.
Alignthecentresofbotharesandtightenthearenuts3or4turnsbyhand.Thentightenthemfullywiththetorquewrenches.
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration oil to
the inner surface of the
flare.
Do not apply refrigeration oil to
the flare nut to avoid tightening
with excessive torque.
[Apply oil]
Torque wrench
Piping union
Flare nut
Spanner
[Tighten]
Flare nut tightening torque
Gas side Liquid side
3/8 inch 1/4 inch
32.7-39.9N • m
(330-407kgf • cm)
14.2-17.2N • m
(144-175kgf • cm)
2-1. Caution on piping handling
1)Protecttheopenendofthepipeagainstdustandmoisture.
2)Allpipebendsshouldbeasgentleaspossible.Useapipebender
forbending.
Wall
If no flare cap is
available, cover
the flare mouth
with tape to keep
dirt or water out.
Be sure to
place a cap.
Rain
2-2. Selection of copper and heat insulation materials
•Whenusingcommercialcopperpipesandttings,observethefollowing:
1)Insulationmaterial:Polyethylenefoam
Heattransferrate:0.041to0.052W/mK(0.035to0.045kcal/mh°C)
Refrigerantgaspipe’ssurfacetemperaturereaches110°Cmax.
Chooseheatinsulationmaterialsthatwillwithstandthistemperature.
2)Besuretoinsulateboththegasandliquidpipingandtoprovide
insulationdimensionsasbelow.
Gas pipe Liquid pipe
Gas pipe
insulation
Liquid pipe
insulation
Finishing tape Drain hose
Inter-unit wire
Gasside Liquidside Gaspipethermal
insulation
Liquidpipethermal
insulation
O.D.9.5mm O.D.6.4mm I.D.12-15mm I.D.8-10mm
Minimumbendradius Thickness10mmMin.
30mmormore
Thickness0.8mm(C1220T-O)
3)Useseparatethermalinsulationpipesforgasandliquidrefrigerantpipes.
01_EN_3P297034-1.indd 11 10/12/2011 11:37:08 AM

English
■English 12
Trial Operation and Testing
1. Trial operation and testing
1-1 Measurethesupplyvoltageandmakesurethatitfallsinthespeciedrange.
1-2 Trialoperationshouldbecarriedoutineithercoolingorheatingmode.
•Incoolingmode,selectthelowestprogrammabletemperature;inheatingmode,selectthehighestprogrammable
temperature.
1)Trialoperationmaybedisabledineithermodedependingontheroomtemperature.
Usetheremotecontrollerfortrialoperationasdescribedbelow.
2)Aftertrialoperationiscomplete,setthetemperaturetoanormallevel(26°Cto28°Cincoolingmode,20°Cto24°Cin
heatingmode).
3)Forprotection,thesystemdisablesrestartoperationfor3minutesafteritisturnedoff.
1-3 Carryoutthetestoperationinaccordancewiththeoperationmanualtoensurethatallfunctionsandparts,
suchaslouvermovement,areworkingproperly.
•Theairconditionerrequiresasmallamountofpowerinitsstandbymode.Ifthesystemisnottobeusedforsome
timeafterinstallation,shutoffthecircuitbreakertoeliminateunnecessarypowerconsumption.
•Ifthecircuitbreakertripstoshutoffthepowertotheairconditioner,thesystemwillrestoretheoriginaloperation
modewhenthecircuitbreakerisopenedagain.
Trial operation from remote controller
1) Press“ON/OFF”buttontoturnonthesystem.
2) Press“TEMP”button(2locations)and“MODE”buttonatthesametime.
3) Press“TEMP”buttonandselect“T”.
4) Press“MODE”button.
5) Trialoperationterminatesinapprox.30minutesandswitchesintonormalmode.Toquitatrialoperation,press
“ON/OFF”button.
2. Test items
Testitems Symptom
(diagnosticdisplayonRC) Check
Indoorandoutdoorunitsareinstalledproperlyonsolidbases. Fall,vibration,noise
Norefrigerantgasleaks. Incompletecooling/heating
function
Refrigerantgasandliquidpipesandindoordrainhoseextensionare
thermallyinsulated. Waterleakage
Draininglineisproperlyinstalled. Waterleakage
Systemisproperlyearthed. Electricalleakage
Thespeciedwiresareusedforinter-unitwiring. Inoperativeorburndamage
Indoororoutdoorunit’sairinletorairoutlethasclearpathofair.
Stopvalvesareopened.
Incompletecooling/heating
function
Indoorunitproperlyreceivesremotecontrolcommands. Inoperative
willappearwhentheMODEbuttonispressed.* Noheating
* If the is not displayed, change the dipswitch setting
for the remote controller.
Slide the dipswitch to the left-hand side.
Press the MODE button again and check that
appears on the LCD of the remote controller.
Dipswitch
01_EN_3P297034-1.indd 12 10/12/2011 11:37:08 AM

Two-dimensional bar code is a code
for manufacturing.
3P297034-1 M11B099 (1111) HT
00_CV_3P297034-1.indd 2 10/31/2011 2:09:38 PM