Mitsubishi Electric Mr. Slim SLZ-M15 User manual
Air Conditioners
SLZ-M15, M25, M35, M50, M60FA
FOR INSTALLER English
INSTALLATION MANUAL
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Contents
1. Safety precautions ......................................................................................... 1
2. Selecting the installation location................................................................... 2
3. Installation diagram........................................................................................ 3
4. Installing the indoor unit................................................................................. 3
5. Refrigerant piping work.................................................................................. 5
6. Drainage piping work..................................................................................... 7
7. Electrical work................................................................................................ 8
8. Test run ........................................................................................................ 15
9. System control ............................................................................................. 17
10. Installing the grille........................................................................................ 17
11. Easy maintenance function.......................................................................... 20
1. Safety precautions
►Beforeinstallingtheunit,makesureyoureadallthe“SafetyPrecautions”.
►The“SafetyPrecautions”provideveryimportantpointsregardingsafety.Makesureyoufollowthem.
►Pleasereporttoyoursupplyauthorityorobtaintheirconsentbeforeconnectingthisequipmenttothepowersupplysystem.
Symbolsusedinthetext
Warning:
Describesprecautionsthatshouldbeobservedtopreventdangerofinjuryor
deathtotheuser.
Caution:
Describesprecautionsthatshouldbeobservedtopreventdamagetothe
unit.
Symbolsusedintheillustrations
: Indicates a part which must be grounded.
: Be sure not to do.
After installation work has been completed, explain the “Safety Precautions,” use,
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
MEANINGSOFSYMBOLSDISPLAYEDONTHEUNIT
WARNING
(Risk of re)
This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.
In case that refrigerant type is R32, this unit uses a ammable refrigerant.
If refrigerant leaks and comes in contact with re or heating part, it will create harmful gas and there is risk of re.
Read the OPERATION MANUAL carefully before operation.
Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.
Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
Warning:
• Carefullyreadthelabelsafxedtothemainunit.
• Askadealeroranauthorizedtechniciantoinstall,relocateandrepairthe
unit.
• Theusershouldneverattempttorepairtheunitortransferittoanotherlo-
cation.
• Donotaltertheunit.
• Forinstallationandrelocationwork,followtheinstructionsintheInstalla-
tionManualandusetoolsandpipecomponentsspecicallymadeforuse
withrefrigerantspeciedintheoutdoorunitinstallationmanual.
• Theunitmustbeinstalledaccordingtotheinstructionsinordertomini-
mizetheriskofdamagefromearthquakes,typhoons,orstrongwinds.An
incorrectlyinstalledunitmayfalldownandcausedamageorinjuries.
• Theunitmustbesecurelyinstalledonastructurethatcansustainits
weight.
• Theapplianceshallbestoredinawell-ventilatedareawheretheroomsize
correspondstotheroomareaasspeciedforoperation.
• Iftheairconditionerisinstalledinasmallroomorclosedroom,measures
mustbetakentopreventtherefrigerantconcentrationintheroomfrom
exceedingthesafetylimitintheeventofrefrigerantleakage.Shouldthe
refrigerantleakandcausetheconcentrationlimittobeexceeded,hazards
duetolackofoxygenintheroommayresult.
• Keepgas-burningappliances,electricheaters,andotherresources(igni-
tionsources)awayfromthelocationwhereinstallation,repair,andotherair
conditionerworkwillbeperformed.
Ifrefrigerantcomesintocontactwithaame,poisonousgaseswillbere-
leased.
• Ventilatetheroomifrefrigerantleaksduringoperation.Ifrefrigerantcomes
intocontactwithaame,poisonousgaseswillbereleased.
• Allelectricworkmustbeperformedbyaqualiedtechnicianaccordingto
localregulationsandtheinstructionsgiveninthismanual.
• Useonlyspeciedcablesforwiring.Thewiringconnectionsmustbemade
securelywithnotensionappliedontheterminalconnections.Also,never
splicethecablesforwiring(unlessotherwiseindicatedinthisdocument).
Failuretoobservetheseinstructionsmayresultinoverheatingorare.
•
Wheninstallingorrelocating,orservicingtheairconditioner,useonlythe
speciedrefrigerantwrittenonoutdoorunittochargetherefrigerantlines.Do
notmixitwithanyotherrefrigerantanddonotallowairtoremaininthelines.
Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhigh
pressureinthe refrigerant line,andmay resultinan explosion andother
hazards.
Theuseofanyrefrigerantotherthanthatspecifiedforthesystemwill
causemechanicalfailureorsystemmalfunctionorunitbreakdown.Inthe
worstcase,thiscouldleadtoaseriousimpedimenttosecuringproduct
safety.
• Theapplianceshallbeinstalledinaccordancewithnationalwiringregula-
tions.
• Thisapplianceisnotintendedforusebypersons(includingchildren)with
reducedphysical,sensoryormentalcapabilities,orlackofexperienceand
knowledge,unlesstheyhavebeengivensupervisionorinstructioncon-
cerninguseoftheappliancebyapersonresponsiblefortheirsafety.
• Childrenshouldbesupervisedtoensurethattheydonotplaywiththeap-
pliance.
• Theterminalblockcoverpaneloftheunitmustbermlyattached.
• Ifthesupplycordisdamaged,itmustbereplacedbythemanufacturer,its
serviceagentorsimilarlyqualiedpersonsinordertoavoidahazard.
• UseonlyaccessoriesauthorizedbyMitsubishiElectricandaskadealeror
anauthorizedtechniciantoinstallthem.
• Afterinstallationhasbeencompleted,checkforrefrigerantleaks.Ifrefrig-
erantleaksintotheroomandcomesintocontactwiththeameofaheater
orportablecookingrange,poisonousgaseswillbereleased.
• Donotuse means toacceleratethe defrostingprocessor to clean,other
thanthoserecommendedbythemanufacturer.
• Theapplianceshallbestoredinaroomwithoutcontinuouslyoperatingig-
nitionsources(forexample:openames,anoperatinggasapplianceoran
operatingelectricheater).
• Donotpierceorburn.
• Beawarethatrefrigerantsmaynotcontainanodour.
• Pipe-workshallbeprotectedfromphysicaldamage.
• Theinstallationofpipe-workshallbekepttoaminimum.
• Compliancewithnationalgasregulationsshallbeobserved.
• Keepanyrequiredventilationopeningsclearofobstruction.
• Donotuselowtemperaturesolderalloyincaseofbrazingtherefrigerant
pipes.
• Whenperformingbrazingwork,besuretoventilatetheroomsufciently.
Makesurethattherearenohazardousorammablematerialsnearby.
Whenperformingthe workinaclosed room,smallroom, or similarloca-
tion,makesurethattherearenorefrigerantleaksbeforeperformingthe
work.
Ifrefrigerantleaksandaccumulates,itmayigniteorpoisonousgasesmay
bereleased.
Note:
Thephrase“Wiredremotecontroller”inthisinstallationmanualrefersonlytothePAR-33MAA.Ifyouneedanyinformationfortheotherremotecontroller,
pleaserefertoeithertheinstallationmanualorinitialsettingmanualwhichareincludedintheseboxes.
For safe and correct use, please read this manual and the outdoor unit installation manual thoroughly before installing the air-conditioner unit.
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2. Selectingtheinstallationlocation
2.1. Indoorunit
• Where airow is not blocked.
• Where cool air spreads over the entire room.
• Where it is not exposed to direct sunshine.
• At a distance 1 m or more away from your TV and radio (to prevent picture from
being distorted or noise from being generated).
• In a place as far away as possible from uorescent and incandescent lights (so the
infrared remote control can operate the air conditioner normally).
• Where the air lter can be removed and replaced easily.
Warning:
Mounttheindoorunitintoaceilingstrongenoughtowithstandtheweightof
theunit.
2.2.
Wirelessremotecontrollermounting(ForSLP-2FAL*)
• Place of mounting
• Where it is easy to operate and easily visible.
• Where children can not touch.
• Mounting
Select a position about 1.2 m above the oor, 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 set the wireless remote controller.
In rooms where inverter type uorescent lamps are used, the signal from the
wireless remote controller may not be received.
1. Safety precautions
1.1. Beforeinstallation(Environment)
Caution:
• Do notusetheunitinanunusualenvironment.Iftheairconditioneris
installedinareasexposedtosteam,volatileoil(includingmachineoil),or
sulfuricgas,areas exposed to highsaltcontentsuch as the seaside,the
performancecanbesignificantlyreducedandtheinternalpartscanbe
damaged.
• Do notinstalltheunitwherecombustiblegasesmayleak,beproduced,
ow,oraccumulate.Ifcombustiblegasaccumulatesaroundtheunit,reor
explosionmayresult.
• Donotkeepfood,plants,cagedpets,artwork,orprecisioninstrumentsin
thedirectairowoftheindoorunitortooclosetotheunit,astheseitems
canbedamagedbytemperaturechangesordrippingwater.
• Whentheroomhumidityexceeds80%orwhenthedrainpipeisclogged,
water may drip from the indoor unit. Do not install the indoor unit where
suchdrippingcancausedamage.
• Wheninstallingtheunitinahospitalorcommunicationsofce,beprepared
fornoiseandelectronicinterference.Inverters,homeappliances,high-
frequencymedicalequipment,andradiocommunicationsequipmentcan
causetheairconditionertomalfunctionorbreakdown.Theairconditioner
mayalsoaffectmedicalequipment,disturbingmedicalcare,andcommuni-
cationsequipment,harmingthescreendisplayquality.
1.2. Beforeinstallationorrelocation
Caution:
• Be extremelycarefulwhentransportingtheunits.Twoormorepersons
areneededtohandletheunit,asitweighs20kgormore.Donotgraspthe
packagingbands.Wearprotectiveglovesasyoucaninjureyourhandson
thensorotherparts.
• Besuretosafelydisposeofthepackagingmaterials.Packagingmaterials,
suchas nailsandother metalorwooden partsmay causestabsor other
injuries.
• Thermalinsulationoftherefrigerantpipeisnecessarytopreventconden-
sation.Iftherefrigerantpipeisnotproperlyinsulated,condensationwillbe
formed.
• Placethermalinsulationonthepipestopreventcondensation.Ifthedrain-
pipeisinstalledincorrectly,waterleakageanddamagetotheceiling,oor,
furniture,orotherpossessionsmayresult.
• Donotcleantheairconditionerunitwithwater.Electricshockmayresult.
• Tightenallarenutstospecicationusingatorquewrench.Iftightened
toomuch,thearenutcanbreakafteranextendedperiod.
• If theunitisrunforlonghourswhentheairabovetheceilingisathigh
temperature/highhumidity(dewpointabove26ºC),dewcondensationmay
beproducedintheindoorunitortheceilingmaterials.Whenoperatingthe
unitsinthiscondition,addinsulationmaterial(10-20mm)totheentiresur-
faceoftheunitandceilingmaterialstoavoiddewcondensation.
1.3. Beforeelectricwork
Caution:
• Besuretoinstallcircuitbreakers.Ifnotinstalled,electricshockmayresult.
• Forthepowerlines,usestandardcablesofsufcientcapacity.Otherwise,
ashortcircuit,overheating,orremayresult.
• Wheninstallingthepowerlines,donotapplytensiontothecables.
• Be suretogroundtheunit.Iftheunitisnotproperlygrounded,electric
shockmayresult.
• Usecircuitbreakers(groundfaultinterrupter,isolatingswitch(+Bfuse),
andmoldedcasecircuitbreaker) withthespeciedcapacity.Ifthecircuit
breakercapacityislargerthanthespeciedcapacity,breakdownorre
mayresult.
1.4. Beforestartingthetestrun
Caution:
• Turnonthemainpowerswitchmorethan12hoursbeforestartingopera-
tion.Startingoperationjustafterturningonthepowerswitchcanseverely
damagetheinternalparts.
• Beforestartingoperation,checkthatallpanels,guardsandotherprotective
partsarecorrectlyinstalled.Rotating,hot,orhighvoltagepartscancause
injuries.
• Donotoperatetheairconditionerwithouttheairltersetinplace.Iftheair
lterisnotinstalled,dustmayaccumulateandbreakdownmayresult.
• Donottouchanyswitchwithwethands.Electricshockmayresult.
• Donottouchtherefrigerantpipeswithbarehandsduringoperation.
• Afterstoppingoperation,besuretowaitatleastveminutesbeforeturn-
ingoffthemainpowerswitch.Otherwise,waterleakageorbreakdownmay
result.
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(576) C
(576) C
J
625 D
408
88 525 B
570 A
150
313
576 - 610 C
408
576 - 610 C
625 D
I
570 A
525 B
481
208
245
127
18952
50 - 92
10
*1
37+5
0
K
FEG
Fig.4-1
4. Installingtheindoorunit
4.2. Ceilingopeningsandsuspensionboltinstallation
locations(Fig.4-2)
Caution:
Installtheindoorunitatleast2.5maboveoororgradelevel.
Forappliancesnotaccessibletothegeneralpublic.
• Using the installation template 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.)
* Before using, check the dimensions of template and gauge, because they
change due to uctuations of temperature and humidity.
* The dimensions of ceiling opening can be regulated within the range shown in
followingdiagram;socenterthemainunitagainst the opening of ceiling, ensuring
that the respective opposite sides on all sides of the clearance between them
becomes identical.
• Use M10 (3/8") suspension bolts.
* Suspension bolts are to be procured at the eld.
• Install securely, ensuring that there is no clearance between the ceiling panel &
grille, and between the main unit & grille.
AOuter side of main unit
BBolt pitch
CCeiling opening
DOuter side of Grille
EGrille
FCeiling
G Min. 500 mm (Entire periphery)
If setting the maintenance space for G, be
sure to leave is a minimum of 700 mm.
HMaintenance space
IFresh air intake
JAngle
KElectric component box
* Leave the maintenance space at the electric component box end.
*1 When installing in an existing ceiling unit location or applying additional heat insulation,
ensure a minimum space of 25 mm.
Fig.4-2
(mm)
12
34
5 6
4.1. Checktheindoorunitaccessories(Fig.4-1)
The indoor unit should be supplied with the following accessories.
Accessory name Q’ty
1Installation template 1
2Washers (with insulation)
Washers (without insulation) 4
4
3
Pipe cover (for refrigerant piping joint)
small diameter (liquid)
large diameter (gas) 1
1
4
Band (large)
Band (middle)
Band (small)
6
2
2
5Drain socket 1
6Insulation 1
7.5 - 24.57.5 - 24.5
Min. 450 H
Floor
7.5 - 24.57.5 - 24.5
Min. 5
Min. 2500
Min. 450 H
3. Installationdiagram
3.1. Indoorunit(Fig.3-1)
ACeiling
BGrille
CObstacle
DMin. 1000 mm
E Min. 500 mm (Entire periphery)
If setting the maintenance space for E, be sure to leave is a minimum of 700 mm.
Warning:
Mounttheindoorunitonaceilingstrongenoughtowithstandtheweightof
theunit.
3.2. Outdoorunit
Refer to the outdoor unit installation manual.
(mm)
Fig.3-1
24510
625
625
C
D
E
A
B
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J
HI
4. Installingtheindoorunit
4.3. Installationofduct(incaseoffreshairintake)
(Fig.4-3)
Caution:
Linkageofductfanandairconditioner
lncasethataductfanisused,besuretomakeitlinkedwiththeairconditioner
whenoutsideairistaken.
Donotruntheductfanonly.Itcancausedewdrop.
Makingaductange(preparedlocally)
• The shape of duct ange shown left is recommended.
Installationofductange
• Cut out the cutout hole. Do not knock it out.
• Install a duct ange to the cutout hole of the indoor unit with three 4 ×10 tapping
screws which should be prepared locally.
Installationofduct(shouldbepreparedlocally)
• Prepare a duct of which inner diameter ts into the outer diameter of the duct ange.
• In case that the environment above the ceiling is high temperature and high humidity,
wrap the duct in a heat insulate to avoid causing dew drop on the wall.
Removethedrainpaninsulation.
A Duct ange recommended shape
(Thickness:0.8 or more)
B3-ø5 hole
CDetail drawing of fresh air intake
DIndoor unit
ECeiling surface
F3-Tapping screw hole
Gø73.4 cutout hole
H Duct ange (Prepared locally)
I4 × 10 Tapping screw (Prepared locally)
JInsulation
4.4.Suspensionstructure(Givesiteofsuspension
strongstructure)(Fig.4-4)
• The ceiling work differs according to the construction of the building. Building con-
structors and interior decorators should be consulted for details.
(1) Extent of ceiling removal: The ceiling must be kept completely horizontal and the
ceiling foundation (framework: wooden slats and slat holders) must be reinforced
in order to protect the ceiling from vibration.
(2) Cut and remove the ceiling foundation.
(3) Reinforce the ends of the ceiling foundation where it has been cut and add ceiling
foundation for securing the ends of the ceiling board.
(4) When installing the unit on a slanting ceiling, interlock a pillow between the ceiling
and the grille and set so that the unit is installed horizontally.
1 Wooden structures
• Use tie beams (single-story 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 6 cm long if the beams are separated by not more than 90 cm and their
sides must be at least 9 cm long if the beams are separated by as much as 180
cm. The size of the suspension bolts should be ø10 (3/8"). (The bolts do not come
with the unit.)
2Ferroconcrete structures
Secure the suspension bolts using the method shown, or use steel or wooden hang-
ers, etc. to install the suspension bolts.
AUnit
BGrille
CPillow
DCeiling
ERafter
FBeam
GRoof beam
HUse inserts rated at 100-150 kg
each (procure locally)
I Suspension bolts M10 (3/8") (procure
locally)
JSteel reinforcing rod
12
Fig.4-4
A Suspension bolt (Procure locally)
BCeiling
C Nut (Procure locally)
D Washer (with insulation) (Accessory)
Fig.4-5
4.5. Unitsuspensionprocedures(Fig.4-5)
Suspend the main unit as shown in the diagram.
1. In advance, set the parts onto the suspension bolts in the order of the washers
(with insulation), washers (without insulation) and nuts (double).
• Fit the washer with cushion so that the insulation faces downward.
• In case of using upper washers to suspend the main unit, the lower washers (with
insulation) and nuts (double) are to be set later.
2. Lift the unit to the proper height of the suspension bolts to insert the mounting
plate between washers and then fasten it securely.
3. When the main unit can not be aligned against the mounting hole on the ceiling,
it is adjustable owing to a slot provided on the mounting plate. (Fig. 4-6)
• Make sure that step A is performed within 37-42 mm. Damage could result by
failing to adhere to this range.
4.6. Conrmingthepositionofmainunitandtightening
thesuspensionbolts(Fig.4-7)
• Using the gauge attached to the grille, ensure that the bottom of the main unit is
properly aligned with the opening of the ceiling. Be sure to conrm this, otherwise
condensation may form and drip due to air leakage etc.
• Conrm that the main unit is horizontally levelled, using a level or a vinyl tube lled
with water.
• After checking the position of the main unit, tighten the nuts of the suspension bolts
securely to fasten the main unit.
• The installation template can be used as a protective sheet to prevent dust from
entering the main unit when the grilles are left unattached for a while or when the
ceiling materials are to be lined after installation of the unit is nished.
* As for the details of tting, refer to the instructions given on the Installation template.
AMain unit
BCeiling
C Installation template (Accessory)
Fig.4-7
Fig.4-3
(mm)
Fig.4-6
*B: Suspension bolt pitch (see Fig. 4-2 B for details)
EMounting plate
F Washer (without insulation) (Accessory)
GCheck using the Installation gauge
AMain unit
BCeiling
C Gauge (Grille accessory)
DCeiling opening dimensions
DEFG
*B
*B
37
127
+5
0
A
B
A
C
D
E
F
C
B
G
C
B
A
A
B
C
A C
H
I
B
G
F
D
E
J
120°
120°
120°
60°
ø 100
ø 100
ø 75
15
20
70
140
186
37+5
0 208
576 - 610 D
A=37+5
0
Min. 30
Duct ange connection
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A
B
5. Refrigerantpipingwork
AIndoor unit
BOutdoor unit
ø6.35
SLZ-M15, M25, M35: ø9.52
SLZ-M50: ø12.7
SLZ-M60: ø15.88
Fig.5-1
aCopper tubes
bGood
cNo good
dTilted
eUneven
fBurred
Fig.5-2
Fig.5-3
aBurr
b Copper tube/pipe
cSpare reamer
dPipe cutter
Fig.5-4
Fig.5-5
aFlare nut
bCopper tube
aFlaring tool
bDie
cCopper tube
dFlare nut
eYoke
ad
cb
ef
90
d
c
b
a
b
a
a
b
e
b
c
d
c
A
5.1. Precautions
FordevicesthatuseR32/R410Arefrigerant
• Usealkylbenzene oil(small amount)as therefrigerationoilappliedtothe
aredsections.
• UseC1220copperphosphorusforcopperandcopperalloyseamlesspipes,
toconnecttherefrigerantpipes.Userefrigerantpipeswiththethicknesses
speciedin thetable below.Makesuretheinsides ofthe pipesare clean
anddonotcontainanyharmfulcontaminantssuchassulfuriccompounds,
oxidants,debris,ordust.
Warning:
Wheninstallingorrelocating,or servicing the air conditioner, useonlythe
speciedrefrigerantwrittenon outdoor unit tochargetherefrigerant lines.
Donotmixitwithanyotherrefrigerantanddonotallowairtoremaininthe
lines.
Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhigh
pressureintherefrigerantline,andmayresultinanexplosionandotherhaz-
ards.
Theuseofanyrefrigerantotherthanthatspeciedforthesystemwillcause
mechanicalfailureorsystemmalfunctionorunitbreakdown.Intheworst
case,thiscouldleadtoaseriousimpedimenttosecuringproductsafety.
5.2. Refrigerantpipe(Fig.5-1)
Pipingpreparation
• Refrigerant pipes of 3, 5, 7, 10 and 15 m are available as optional items.
(1) Table below shows the specications of pipes commercially available.
Model Pipe Outside diameter Min. wall
thickness Insulation
thickness Insulation
material
mm inch
SLZ-M15
SLZ-M25
SLZ-M35
For liquid 6.35 1/4 0.8 mm 8 mm Heat resist-
ing foam
plastic 0.045
specic
gravity
For gas 9.52 3/8 0.8 mm 8 mm
SLZ-M50
For liquid 6.35 1/4 0.8 mm 8 mm
For gas 12.7 1/2 0.8 mm 8 mm
SLZ-M60
For liquid 6.35 1/4 0.8 mm 8 mm
For gas 15.88 5/8 1.0 mm 8 mm
(2) Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
(3) Refrigerant pipe bending radius must be 100 mm or more.
Caution:
Usingcarefulinsulationofspeciedthickness.Excessivethicknessprevents
storagebehindtheindoorunitandsmallerthicknesscausesdewdrippage.
5.3. Flaringwork
• Main cause of gas leakage is defect in aring work.
Carry out correct aring work in the following procedure.
5.3.1. Pipecutting(Fig.5-2)
• Using a pipe cutter cut the copper tube correctly.
5.3.2. Burrsremoval(Fig.5-3)
• Completely remove all burrs from the cut cross section of pipe/tube.
• Put the end of the copper tube/pipe to downward direction as you remove burrs in
order to avoid burrs drop in the tubing.
5.3.3. Puttingnuton(Fig.5-4)
• Remove are nuts attached to indoor and outdoor unit, then put them on pipe/tube
having completed burr removal.
(not possible to put them on after aring work)
5.3.4. Flaringwork(Fig.5-5)
• Carry out aring work using aring tool as shown at the right.
Pipe diameter
(mm)
Dimension
A (mm)
B +0
-0.4 (mm)
When the tool for
R32/R410A is used
Clutch type
6.35 0 - 0.5 9.1
9.52 0 - 0.5 13.2
12.7 0 - 0.5 16.6
15.88 0 - 0.5 19.7
Firmly hold copper tube in a die in the dimension shown in the table at above.
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de
i
fgh
c
ab
øB
Fig.5-6
Fig.5-7
6 196 196
188
133 69
64
A
C
E
F
DB
B (gas)
A (liquid)
5. Refrigerantpipingwork
Fig.5-8
ARefrigerant pipe and insulating material
(Procure locally)
B Pipe cover (large) (Accessory)
C Pipe cover (small) (Accessory)
D Refrigerant pipe (gas)
E Refrigerant pipe (liquid)
F Band (Accessory)
GCross-sectional view of connection
HRefrigerant pipe
IInsulating material
J Squeeze
Fig.5-9
AFFBCD
E
J
H
I
B,C
F
G
C
5.3.5. Check(Fig.5-6)
• Compare the ared work with a gure in right side hand.
• If are is noted to be defective, cut off the ared section and do aring work again.
aSmooth all around
bInside is shining without any scratches
cEven length all around
dToo much
eTilted
5.4. Refrigerantanddrainagepipinglocations(Fig.5-7)
ADrain pipe
BCeiling
CGrille
D Refrigerant pipe (liquid)
E Refrigerant pipe (gas)
FMain unit
Model Dimension
A (liquid) B (gas)
SLZ-M15
SLZ-M25
SLZ-M35 63 mm 72 mm
SLZ-M50
SLZ-M60 63 mm 78 mm
5.5. Pipeconnection(Fig.5-8)
Indoorunit
1) Whenusingcommerciallyavailablecopperpipes:
• Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening
are nut.
• Use two wrenches to tighten piping connections.
• Air-purge the refrigerant piping using your own refrigerant gas (don’t air-purge the
refrigerant charged in the outdoor unit).
• Use leak detector or soapy water to check for gas leaks after connections are
completed.
• Use ared nut installed to this indoor unit.
• In case of reconnecting the refrigerant pipes after detaching, make the ared part
of pipe re-fabricated.
• Use refrigerant piping insulation provided to insulate indoor unit connections. Insulate
carefully following shown below.
2) Heatinsulationforrefrigerantpipes:
1 Wrap the enclosed large-sized pipe cover around the gas pipe, making sure that
the end of the pipe cover touches the side of the unit.
2 Wrap the enclosed small-sized pipe cover around the liquid pipe, making sure that
the end of the pipe cover touches the side of the unit.
3Secure both ends of each pipe cover with the enclosed bands. (Attach the bands
20 mm from the ends of the pipe cover.)
Make sure that the slit in the pipe cover is facing upward when it is installed.
See that stop valve on outdoor unit is fully shut (unit is shipped with valve shut). After
allpipingconnectionsbetweenindoorandoutdoorunithave been completed, vacuum-
purge air from system through the service port for the stop valve on the outdoor unit.
After completing procedures above, open outdoor unit stop valves stem fully. This
completes connection of refrigerant circuit between indoor and outdoor units. Stop
valve instructions are marked on outdoor unit.
Flarenuttightening
• Apply a thin coat of refrigeration oil on the seat surface of pipe.
• For connection rst align the center, then tighten the rst 3 to 4 turns of are nut.
• Use tightening torque table below as a guideline for indoor unit side union joint
section, and tighten using two wrenches. Excessive tightening damages the are
section.
A Apply refrigerating machine oil over the entire are seat surface.
B Use correct are nuts meeting the pipe size of the outdoor unit.
CFlare nut tightening torque
Copper pipe O.D.
(mm) Flare nut O.D.
(mm) Tightening torque
(N·m)
ø6.35 17 14 - 18
ø9.52 22 34 - 42
ø12.7 26 49 - 61
ø15.88 29 68 - 82
A
B
R0.4 - R0.8
45°± 2°
90°± 0.5°
f Scratch on ared plane
gCracked
hUneven
iBad examples
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6. Drainagepipingwork
(mm)
Fig.6-2
B
C
F
K
30 30 30
DE E
L
G
H
I
AA
J
C,K
Fig.6-1
6.1. Drainagepipingwork(Fig.6-1)
• Use VP25 (O. D. ø32 PVC TUBE) for drain piping and provide 1/100 or more
downward slope.
• Be sure to connect the piping joints using a polyvinyl type adhesive.
• Observe the gure for piping work.
• Use the included drain hose to change the extraction direction.
1Correct piping
2 Wrong piping
A Insulation (9 mm or more)
B Downward slope (1/100 or more)
CSupport metal
KAir bleeder
LRaised
MOdor trap
Grouped piping
D O. D. ø32 PVC TUBE
EMake it as large as possible
FIndoor unit
G Make the piping size large for grouped piping.
H Downward slope (1/100 or more)
I O. D. ø38 PVC TUBE for grouped piping
(9 mm or more insulation)
JUp to 850 mm
1. Connect the drain socket (supplied with the unit) to the drain port. (Fig. 6-2)
(Afx the tube using PVC adhesive then secure it with a band.)
2. Install a locally purchased drain pipe (PVC pipe, O.D. ø32).
(Afx the pipe using PVC adhesive then secure it with a band.)
3. Insulate the tube and pipe. (PVC pipe, O.D. ø32 and socket)
4. Check that drain ows smoothly.
5. Insulate the drain port with insulating material, then secure the material with a
band. (Both insulating material and band are supplied with the unit.)
AMain unit
BInsulating material
C Band (large)
D Drain port (transparent)
EInsertion margin
FMatching
G Drain pipe (O.D. ø32 PVC TUBE)
H Insulating material (purchased locally)
I Transparent PVC pipe
J O.D. ø32 PVC TUBE (Slope 1/100 or more)
K Band (middle)
LDrain socket
1
2
AB
C
B
M
L
K
DED
H
I
G
D
F
FF
J
F
Max. 20 m
1.5–2 m
Max. 150 mm
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7. Electricalwork
Indoor unit model SLZ-M
Wiring Wire
No. × size
(mm2)
Indoor unit-Outdoor unit *1 3 × 1.5 (polar)
Indoor unit-Outdoor unit earth *1 1 × Min. 1.5
Indoor unit earth 1 × Min. 1.5
Remote controller-Indoor unit *2 2 × 0.3 (Non-polar)
Circuit rating
Indoor unit (Heater) L-N *3 —
Indoor unit-Outdoor unit S1-S2 *3 230 VAC
Indoor unit-Outdoor unit S2-S3 *3 24 VDC
Remote controller-Indoor unit *3 12 VDC
7.1. Indoorunitpowersuppliedfromoutdoorunit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
S1
S2
L
N
1
2
S1
S2
S3
S3
ABC
D
EF
G
S1
S2
L
N
1
2
S1
S2
S3
1
2
S1
S2
S3
S3
1
2
S1
S2
S3
1
2
S1
S2
S3
D
EF
GGGG
ABC
* Afx label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting cables
F Remote controller
G Indoor unit
* Afx label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Note:
Someunitscannotbeusedinasimultaneoustwin/triple/quadruplesystem.Refertotheoutdoorunitinstallationmanualfordetails.
*1. Max. 45 m
If 2.5 mm2used, Max. 50 m
If 2.5 mm2used and S3 separated, Max. 80 m
*2. Max. 500 m
(When using 2 remote controllers, the maximum wiring length for the remote controller cables is 200 m.)
*3. The gures are NOT always against the ground.
S3 terminal has 24 VDC against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.
Notes: 1. Wiringsizemustcomplywiththeapplicablelocalandnationalcode.
2.
Powersupplycordsandindoorunit/outdoorunitconnectingcordsshallnotbelighterthanpolychloroprenesheathedexiblecord.(Design60245IEC57)
3. Installanearthlongerthanothercables.
4. Indoorandoutdoorconnectingwireshavepolarities.Makesuretomatchtheterminalnumber(S1,S2,S3)forcorrectwirings.
5. Wiringforremotecontrollercableshallbeapart(5cmormore)frompowersourcewiringsothatitisnotinuencedbyelectricnoisefrompower
sourcewiring.
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting cables
F Remote controller
G Indoor unit
Simultaneous twin/triple/quadruple system
1:1 System
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a re or communication failure.
Warning:
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Fig.7-3
15
Be sure to connect the remote
controller cable (0.3 mm) to the
locations shown in the diagram.
Secure with a band 4 (small) at the
location shown in the diagram
Secure with a band 4 (small)
at the location shown in the
diagram
(Remote controller
cable retainer)
Cable strap
12
S1 S2 S3
Fig.7-2
E
B
E
D
C
J
I
G
F
J
Caution:
• Beforeinstallingthegrille,makesurethatthejunctionwireisconnected.
• Ifthegrillehassignalreceiverori-Seesensor,thepackofgrilleincludes
junctionwire.
Signalreceiver: CN90
3Di-Seesensor: CN5Y
3Di-Seesensormotor:CN4Z
CN5Y
CN90 CN4Z
7. Electricalwork
Fig.7-1
AElectric component cover
BElectric component box
CEntryfor Indoor-Outdoor connectingcable
DEntry for wired remote controller cable
ECable clamp
D
C
F
H
G
A
B
F Indoor/Outdoor unit connecting terminal
G Wired remote controller terminal
HIndoor controller
IEarth cable
JCable strap
7.2. Indoorunit(Fig.7-1)(Fig.7-2)(Fig.7-3)
Work procedure
1.Loosen the two screws securing the electric component cover, and then slide and
remove the cover.
2.Route the wires along the wiring routes and through the wire inlets in the electric
component box.
(Procure the power supply cord and indoor/outdoor unit connecting cable locally.)
3. Securely connect the power supply cord and the indoor/outdoor unit connecting
cable to the terminal block.
4.Secure the wires with the cable straps inside the electric component box.
Secure the wires with cable straps as cushioning components so that no stress is
applied to the connecting sections of the terminal block when tension is generated.
5.Install the electric component cover.
Make sure that the wires do not get pinched.
6.Secure the wires with the cable straps outside the electric component box.
Warning:
• Inserthooktheelectriccomponentcoverintothebentsupportontheelectric
componentboxandattachthecoversecurely.Ifitisattachedincorrectly,it
couldresultinare,electricshockduetodust,water,etc.
• Usethespeciedindoor/outdoorunitconnectingcabletoconnecttheindoor
andoutdoorunitsandxthecabletotheterminalblocksecurelysothatno
stressisappliedtotheconnectingsectionoftheterminalblock.Incomplete
connectionorxingofthecablecouldresultinare.
• Securealloftheindoor/outdoorunitconnectingcableswiththecablestrap
onthesideoftheelectriccomponentbox.
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7. Electricalwork
Fig.7-6
Fig.7-5
B
C
D
E
Between ribs
A
Fig.7-4
D
7.2.1.Installingthei-Seesensorandsignalreceiver
Before installing the grille, connect the junction wires included with the grille acces-
sories and place them in the connector box.
1Remove the two screws securing the wire cover of the main unit, and then open
the cover.
2Route the wires of the i-See sensor and signal receiver through the wire inlets in
the electric component box as shown in the diagram and around the bushings on
the side of the main unit. (Fig. 7-4)
When routing the wires, open the clamp securing the grille junction wire, and then
securethe grille junction wire andthewiresofthe i-See sensor and signalreceiver
with the clamp.
3Removetheonescrew securing the connector box cover,and thenopen the cover.
(Fig. 7-5)
4Place the junction wire connector in the connector box.
5Install the wire cover and connector box cover.
Caution:
Wheninstallingthecovers,makesurethatthewiresdonotgetpinched.
Fitthebandsecuringthejunctionwiresbetweentheribsontheconnector
boxasshowninthediagram.(Fig.7-6)
A Wire cover
BConnector box cover
CConnector box
D i-See sensor or signal receiver lead wire (Grille accessory)
EBand
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7. Electricalwork
Fig.7-7
Fig.7-8
B
1
C
A
2
D
B
A
Fig.7-9 Fig.7-10
A
A
D
E
C
B
7
1
4
2
3
6
5
8
7.3. Remotecontroller
7.3.1. Wiredremotecontroller
1)Installingprocedures
Refer to the installation manual that comes with each remote controller for details.
2)Functionselectionofremotecontroller
If two remote controllers are connected, set one to “Main” and the other to “Sub”.
For setting procedures, refer to “Function selection of remote controller” in the
operation manual for the indoor unit.
7.3.2. Forwirelessremotecontroller
1)Installationarea
• Area in which the remote controller is not exposed to direct sunshine.
• Area in which there is no nearby heating source.
• Area in which the remote controller is not exposed to cold (or hot) winds.
• Area in which the remote controller can be operated easily.
• Area in which the remote controller is beyond the reach of children.
2)Installationmethod(Fig.7-7)
1Attachtheremotecontrollerholdertothedesiredlocationusing2tapping screws.
2Place the lower end of the controller into the holder.
ARemote controller B Wall CDisplay panel DReceiver
• The signal can travel up to approximately 7 meters (in a straight line) within 45
degrees to both right and left of the center line of the receiver.
3)Setting(Clocksetting)(Fig.7-8)
1Insert batteries or press the button with something sharp.
[CLOCK] Aand [:] Bblinks.
2Press the button with something sharp.
3Press the button to set the time.
Press the button to set the Day.
4Press the button with something sharp at the end.
[CLOCK] and [:] lighted.
4)Initialsetting
The following settings can be made in the initial setting mode.
Item Setting Fig. 7-10
Temperature unit ºC/ºF A
Time display 12-hour format/24-hour format B
AUTO mode Single set point/Dual set point C
Pair No. 0–3 D
Backlight On/Off E
4-1.Switchingtotheinitialsettingmode
1. Press the button 1to stop the air conditioner.
2. Press the button 2.
TheFunction setting screen will bedisplayed andthe functionNo.Awill blink.
(Fig. 7-9)
Press the button 4to change the function No.
3. Check that function No. “1” is displayed, and then press the button 3.
The display setting screen will be displayed. (Fig. 7-10)
4-2.ChangingthetemperatureunitA
Press the button 5.
Eachtimethe button5ispressed,thesettingswitches between and .
: The temperature is displayed in degrees Celsius.
: The temperature is displayed in degrees Fahrenheit.
4-3.ChangingthetimedisplayB
Press the button 6.
Each time the button 6is pressed, the setting switches between
and .
: The time is displayed in the 12-hour format.
: The time is displayed in the 24-hour format.
4-4.ChangingtheAUTOmodeC
Press the button 7.
Each time the button 7is pressed, the setting switches between
and .
: TheAUTO mode operates as the usual automatic mode.
: TheAUTO mode operates using dual set points.
4-5.ChangingthepairNo.D
Press the button 4.
Each time the button 4is pressed, the pair No. 0–3 changes.
Pair No. of wireless remote controller Indoor PC board
0 Initial setting
1 Cut J41
2 Cut J42
3 Cut J41, J42
4-6.ChangingthebacklightsettingE
Press the button 8.
Each time the button 8is pressed, the setting switches between and
.
: The backlight comes on when a button is pressed.
: The backlight does not come on when a button is pressed.
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7.4. Functionsettings
7.4.1. Bywiredremotecontroller
1 (Fig. 7-11)
• Select “Service” from the Main menu, and press the [SELECT] button.
• Select “Function setting” with the [F1] or [F2] button, and press the [SELECT]
button.
2 (Fig. 7-12)
• Set the indoor unit refrigerant addresses and unit numbers with the [F1]
through [F4] buttons, and then press the [SELECT] button to con rm the cur-
rent setting.
<CheckingtheIndoorunitNo.>
When the [SELECT] button is pressed, the target indoor unit will start fan opera-
tion. If the unit is common or when running all units, all indoor units for the se-
lected refrigerant address will start fan operation.
3 (Fig. 7-13)
• When data collection from the indoor units is completed, the current settings
appears highlighted. Non-highlighted items indicate that no function settings
are made. Screen appearance varies depending on the “Unit No.” setting.
4 (Fig. 7-14)
• Use the [F1] or [F2] button to move the cursor to select the mode number, and
change the setting number with the [F3] or [F4] button.
5 (Fig. 7-15)
• When the settings are completed, press the [SELECT] button to send the set-
ting data from the remote controller to the indoor units.
• When the transmission is successfully completed, the screen will return to the
Function setting screen.
7. Electricalwork
F1 F2 F3 F4
Service menu
Cursor
Main menu:
Test run
Input maintenance info.
Function setting
Check
Self check
F1 F2 F3 F4
Function setting
Cursor Address
Monitor:
Ref. address
Unit No. Grp./1/2/3/4/All
Fig.7-11
Fig.7-13
Fig.7-12
Fig.7-14
F1 F2 F3 F4
Function setting
Cursor Cursor
Request:
Ref. address
Mode 1
Mode 2
Mode 3
Mode 4
Grp.
F1 F2 F3 F4
Function setting
Cursor Cursor
Request:
Ref. address
Mode 7
Mode 8
Mode 9
Mode10
Unit # 1
Fig.7-16
Fig.7-18
Fig.7-17
Fig.7-19
F1 F2 F3 F4
Function setting
Ref. address
Sending data
Fig.7-15
7.4.2. Bywirelessremotecontroller(Fig.7-16,Fig.7-17,Fig.7-18,Fig.
7-19)
1Going to the function select mode
Press the button between of 5 seconds.
(Start this operation from the status of remote controller display turned off.)
[CHECK] is lighted and "00" blinks. (Fig. 7-16)
Press the button to set the "50".
Direct the wireless remote controller toward the receiver of the indoor unit and
press the button.
2Setting the unit number
Press the button to set unit number A. (Fig. 7-17)
Direct the wireless remote controller toward the receiver of the indoor unit and
press the button.
3Select a mode
Press the button to set Mode number B. (Fig. 7-18)
Direct the wireless remote controller toward the receiver of the indoor unit and
press the button.
Current setting number: 1=1 beep (1 second)
2=2 beep (1 second each)
3=3 beep (1 second each)
4Selecting the setting number
Use the button to change the Setting number C. (Fig. 7-19)
Direct the wireless remote controller toward the receiver of the indoor unit and
press the button.
5To select multiple functions continuously
Repeat select 3and 4to change multiple function settings continuously.
6Complete function selection
Directthe wireless remote controllertoward thesensoroftheindoor unit and press
the button.
Note:
MaketheabovesettingsonMr.Slimunitsasnecessary.
• Table1summarizesthesettingoptionsforeachmodenumber.
• Besuretowritedownthesettingsforallfunctionsifanyoftheinitialsettings
hasbeenchangedafterthecompletionofinstallationwork.
A
B
C
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7. Electricalwork
Functiontable
Select unit number 00 [table 1]
Mode Settings Mode no. Setting no.
Initial setting
setting
Power failure automatic recovery Not available 01 1
Available *1 2 Ο *2
Indoor temperature detecting Indoor unit operating average 02 1Ο
Set by indoor unit’s remote controller 2
Remote controller’s internal sensor 3
Select unit numbers 01 to 03 or all units (AL [wired remote controller]/07 [wireless remote controller])
Mode Settings Mode no. Setting no.
Initial setting
setting
Filter sign 100Hr 07 1
2500Hr 2 Ο
No lter sign indicator 3
Fan speed Silent 08 1
Standard 2 Ο
High ceiling 3
Up/down vane setting Not setting 11 1
Draft-less setting (vanes angle setup 1)2Ο
Downward setting (vanes angle setup 2)3
3D i-See sensor positioning *3 Position 1 ("□" stamp position, page 19)
12 1
(Position 1)2
Position 3 ("○" stamp position, page 19) 3Ο
Fan speed during the cooling thermostat is OFF Setting fan speed 27 1
Stop 2
Extra low 3Ο
*1 When the power supply returns, the air conditioner will start 3 minutes later.
*2 Power failure automatic recovery initial setting depends on the connecting outdoor unit.
*3 When the 3D i-See sensor corner panel position changed, change this mode. Refer to page 19.
7.4.3.Howtosetthexedup/downairdirection
• Only the particular outlet can be xed to certain direction with the pro-
cedures below. Once xed, only the set outlet is xed every time air
conditioner is turned on. (Other outlets follow UP/DOWN air direction
setting of the remote controller.)
■ Explanationofword
• "Refrigerant address No." and "Unit No." are the numbers given to each
air conditioner.
• "Outlet No." is the number given to each outlet of air conditioner.
(Refer to the right.)
• "Up/Down air direction" is the direction (angle) to x.
Reset 1
horizontal 2345
Electric component box
Outlet No. 1
Outlet No. 3 Outlet No. 2
Outlet No. 4
Horizontal airow
Remote controller setting
The airow direction of this outlet
is controlled by the airow direc-
tion setting of remote controller.
Fixed setting
The airow direction of this outlet is xed
in particular direction.
* When it is cold because of direct
airow, the airow direction can be xed
horizontally to avoid direct airow.
Downward
Note:
TheoutletNo.isindicatedbythenumberofgroovesonbothendsofeach
airoutlet.Settheairdirectionwhilecheckingtheinformationshownonthe
remotecontrollerdisplay.
Air outlet identication marks
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7. Electricalwork
F1 F2 F3 F4
Manual vane angle
Manual vane angle
Select:
Setting
Outlet Angle
Ifalloutletsareselected, willbedisplayedthe
nexttimetheunitgoesintooperation.
Navigating through the screens
• To go back to the Main menu..........[MENU] button
• To return to the previous screen .....[RETURN] button
The current vane setting will appear.
Select the desired outlets from 1 through 4 with the [F1] or [F2] button.
• Outlet: "1", "2", "3", "4", and "1, 2, 3, 4, (all outlets)"
Press the [F3] or [F4] button to go through the option in the order of "No setting (re-
set)", "Step 1", "Step 2", "Step 3", "Step 4", "Step 5", and "Draft reduction*".
Select the desired setting.
■ Vane setting
* Draft reduction
The airow direction for this setting is more horizontal than the airow direction for
the “Step 1” setting in order to reduce a drafty feeling. The draft reduction can be
set for only 1 vane.
Press the [SELECT] button to save the settings.
A screen will appear that indicates the setting information is being transmitted.
The setting changes will be made to the selected outlet.
The screen will automatically return to the one shown above (step 4) when the
transmission is completed.
Make the settings for other outlets, following the same procedures.
No setting
Step 3
Draft
reduction*
Step 1
Step 4
All outlets
Step 2
Step 5
F1 F2 F3 F4
Manual vane angle
Input display:
Cur. Address Check
Ref. address
Unit No.
Identify unit Check button
Conrmationprocedure
1 First, conrm by setting “Ref. address” to 0 and “Unit No.” to 1.
• Move the cursor to "Ref. address" or "Unit No." with the [F1] button to select.
• Select the refrigerant address and the unit number for the units to whose vanes
are to be xed, with the [F2] or [F3] button, and press the [SELECT] button.
• Ref. address: Refrigerant address
• Unit No.: 1, 2, 3, 4
Press the [F4] button to conrm the unit.
2Change the “Unit No.” in order and check each unit.
• Press the [F1] button to select “Unit No.”.
Press the [F2] or [F3] button to change the “Unit No.” to the unit that you want
to check, and then press the [F4] button.
• After pressing the [F4] button, wait approximately 15 seconds, and then check
the current state of the air conditioner.
→ The vane is pointing downward. → This air conditioner is displayed on the
remote controller.
→ All outlets are closed. → Press the [RETURN] button and continue the opera-
tion from the beginning.
→ The messages shown to the left are displayed. → The target device does not
exist at this refrigerant address.
• Press the [RETURN] button to return to the initial screen.
3Change the “Ref. address” to the next number.
• Refer to step 1 to change the “Ref. address” and continue with the conrmation.
F1 F2 F3 F4
Manual vane angle
Return:
No communication
Check Unit state.
F1 F2 F3 F4
Manual vane angle
Return:
Ref. address
Unit No.
Function setting for unit
with vane fully open.
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8. Testrun
8.1. Beforetestrun
►Aftercompletinginstallationandthewiringandpipingoftheindoorand
outdoorunits,checkforrefrigerantleakage,loosenessinthepowersup-
plyorcontrolwiring,wrongpolarity,andnodisconnectionofonephase
inthesupply.
►Usea500-voltmegohmmetertocheckthattheresistancebetweenthe
powersupplyterminalsandgroundisatleast1.0MΩ.
►Donotcarryoutthistestonthecontrolwiring(lowvoltagecircuit)termi-
nals.
Warning:
Donotusetheairconditioneriftheinsulationresistanceislessthan1.0MΩ.
8.2. Testrun
8.2.1. Usingwiredremotecontroller
■ Make sure to read operation manual before test run. (Especially items to secure safety)
Step 1 Turnonthepower.
● Remote controller: The system will go into startup mode, and the remote controller power lamp (green) and “PLEASE WAIT” will blink. While the lamp and message are
blinking, the remote controller cannot be operated. Wait until “PLEASE WAIT” is not displayed before operating the remote controller. After the power is turned on, “PLEASE
WAIT” will be displayed for approximately 2 minutes.
● Indoor controller board: LED 1 will be lit up, LED 2 will be lit up (if the address is 0) or off (if the address is not 0), and LED 3 will blink.
● Outdoor controller board: LED 1 (green) and LED 2 (red) will be lit up. (After the startup mode of the system nishes, LED 2 will be turned off.) If the outdoor controller
board uses a digital display, [- ] and [ -] will be displayed alternately every second.
If the operations do not function correctly after the procedures in step 2 and thereafter are performed, the following causes should be considered and eliminated if they
are found.
(The symptoms below occur during the test run mode. “Startup” in the table means the LED display written above.)
Symptomsintestrunmode Cause
RemoteControllerDisplay OUTDOORBOARDLEDDisplay
< > indicates digital display.
Remote controller displays “PLEASE WAIT”, and
cannot be operated. After “startup” is displayed, only green lights
up. <00> • After power is turned on, “PLEASE WAIT” is displayed for 2
minutes during system startup. (Normal)
After power is turned on, “PLEASE WAIT” is dis-
playedfor3minutes, then error code is displayed.
After “startup” is displayed, green(once) and
red(once) blink alternately. <F1> • Incorrect connection of outdoor terminal block (R, S, T and S1,
S2, S3.)
After “startup” is displayed, green(once) and
red(twice) blink alternately. <F3, F5, F9> • Outdoor unit’s protection devise connector is open.
No display appears even when remote controller
operation switch is turned on. (Operation lamp
does not light up.)
After “startup” is displayed, green(twice) and
red(once) blink alternately. <EA. Eb>
• Incorrect wiring between the indoor and outdoor unit (Polarity is
wrong for S1, S2, S3.)
• Remote controller transmission wire short.
After “startup” is displayed, only green lights
up. <00> • There is no outdoor unit of address 0. (Address is other than 0.)
• Remote controller transmission wire open.
Display appears but soon disappears even when
remote controller is operated. After “startup” is displayed, only green lights
up. <00> • After canceling function selection, operation is not possible for
about 30 seconds. (Normal)
Step2 Switchtheremotecontrollerto“Testrun”.
1 Select “Test run” from the Service menu, and press the [SELECT] button. (Fig. 8-1)
2 Select “Test run” from the Test run menu, and press the [SELECT] button. (Fig. 8-2)
3The test run operation starts, and the Test run operation screen is displayed.
F1 F2 F3 F4
Cool Pipe Auto
Switch disp.
Mode Fan
RemainTest run
Fig.8-3
F1 F2 F3 F4
unemec i v r eS
rosruC : u n emn i aM
Test run
Input maintenance info.
Function setting
Check
Self check
Fig.8-1
F1 F2 F3 F4
Test run menu
Cursor
Service menu:
Test run
Drain pump test run
Fig.8-2
F1 F2 F3 F4
Remain
Vane
Fig.8-4
Step3 Performthetestrunandchecktheairowtemperatureandautovane.
1 Press the [F1] button to change the operation mode. (Fig. 8-3)
Cooling mode: Check that cool air blows from the unit.
Heating mode: Check that warm air blows from the unit.
2 Press the [SELECT] button to display the Vane operation screen, and then press
the [F1] and [F2] buttons to check the auto vane. (Fig. 8-4)
Press the [RETURN] button to return to the Test run operation screen.
If the vanes do not move, check that the junction wire connectors are connected
securely and the connector colors match.
Step4 Conrmtheoperationoftheoutdoorunitfan.
The speed of the outdoor unit fan is controlled in order to control the performance of the unit. Depending on the ambient air, the fan will rotate at a slow speed and will keep
rotating at that speed unless the performance is insufcient. Therefore, the outdoor wind may cause the fan to stop rotating or to rotate in the opposite direction, but this is
not a problem.
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8. Testrun
Step5 Stopthetestrun.
1 Press the [ON/OFF] button to stop the test run. (The Test run menu will appear.)
Note: If an error is displayed on the remote controller, see the table below.
[Output pattern A] Errors detected by indoor unit
Wireless remote controller Wired remote
controller Symptom Remark
Beeper sounds/OPERATION
INDICATOR lamp blinks (Num-
ber of times)
Check code
1 P1 Intake sensor error
2P2 Pipe (TH2) sensor error
P9 Pipe (TH5) sensor error
3 E6, E7 Indoor/outdoor unit communication error
4 P4 Drain sensor error / Float switch connector open
5P5 Drain pump error
PA Forced compressor error
6 P6 Freezing/Overheating protection operation
7 EE Communication error between indoor and outdoor units
8 P8 Pipe temperature error
9 E4 Remote controller signal receiving error
10 — —
11 PB (Pb) Indoor unit fan motor error
12 FB (Fb) Indoor unit control system error (memory error, etc.)
14 PL Refrigerant circuit abnormal
No sound E0, E3 Remote controller transmission error
No sound E1, E2 Remote controller control board error
No sound – – – – No corresponding
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wireless remote controller Wired remote
controller Symptom Remark
Beeper sounds/OPERATION
INDICATOR lamp blinks (Num-
ber of times)
Check code
1 E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit) For details, check the LED
display of the outdoor controller
board.
2 UP Compressor overcurrent interruption
3 U3, U4 Open/short of outdoor unit thermistors
14 PL or Others Abnormality of refrigerant circuit or other errors
*1 If the beeper does not sound again after the initial 2 beeps to conrm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on,
there are no error records.
*2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 beeps to conrm the self-check start signal was received, the specied
refrigerant address is incorrect.
• On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed in the LCD.
• Refer to the following tables for details on the check codes. (Wireless remote controller)
OPERATIONIN-
DICATOR lamp
blinking pattern
Beep Beep Beep Beep Beep Beep Beep
Off
Approx. 2.5 sec. On
Approx. 3 sec. On
0.5 sec. On
0.5 sec. On
0.5 sec. On
0.5 sec. Off
Approx. 2.5 sec. On
Approx. 3 sec. On
0.5 sec. On
0.5 sec.
· · · Repeated
Number of blinks/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “U2”)
Number of blinks/beeps in pattern indicates the
check code in the following table
nth
1st 2nd 3rd 1st 2nd
Self-check
starts
(Start signal
received)
Beeper sounds
[Output pattern B]
OPERATIONIN-
DICATOR lamp
blinking pattern
Beep Beep Beep Beep Beep Beep Beep
Off
Approx. 2.5 sec. On
0.5 sec. On
0.5 sec. On
0.5 sec. On
0.5 sec. Off
Approx. 2.5 sec. On
0.5 sec. On
0.5 sec.
· · · Repeated
Number of blinks/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “P5”)
Number of blinks/beeps in pattern indicates the
check code in the following table
nth
1st 2nd 3rd 1st 2nd
Self-check
starts
(Start signal
received)
Beeper sounds
[Output pattern A]
See the table below for the details of the LED display (LED 1, 2, and 3) on the indoor controller board.
LED 1 (microcomputer power supply) Indicates whether control power is supplied. Make sure that this LED is always lit.
LED 2 (remote controller power supply) Indicates whether power is supplied to the wired remote controller. The LED is lit only for the indoor unit that is connected
to the outdoor unit that has an address of 0.
LED 3 (indoor/outdoor unit communication) Indicates whether the indoor and outdoor units are communicating. Make sure that this LED is always blinking.
Note:
Iftheunitisoperatedcontinuouslyduringatestrun,theunitstopsafter2hours.
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8. Testrun
B
C
D
A8.4. Checkofdrainage(Fig.8-6)
• Ensure that the water is being properly drained out and that no water is leaking
from joints.
Whenelectricworkiscompleted.
• Pour water during cooling operation and check.
Whenelectricworkisnotcompleted.
• Pour water during emergency operation and check.
* Drain pump and fan are activated simultaneously when single phase 230 V is
turned on to S1 and S2 on terminal block after the connector (SWE) on controller
board in the electrical component box is set to ON.
Be sure to turn it back to the former state after work.
Fig.8-6
9. Systemcontrol
Refer to the outdoor unit installation manual.
A Water supply pump
B Water (about 1000 cc)
CDrain plug
DPour water through outlet
•Be careful not to spray water into
the drain pump mechanism.
8.3. Self-check
■ Refer to the installation manual that comes with each remote controller for details.
1
2 3
When equipped with the signal receiver
When equipped with the i-See sensor
4657
When equipped with the wireless remote controller
890 1
10.Installingthegrille
Fig.10-1
10.1. Checkthegrilleaccessories(Fig.10-1)
• The grille should be supplied with the following accessories.
Accessory name Q’ty Remark
1Grille 1 625 × 625 (mm)
2Screw with washer 4 M5 × 0.8 × 25 (mm)
3Gauge 1
4Junction wire for signal re-
ceiver 1Included when equipped with the
signal receiver.
5Junction wire for i-See sensor 1Included when equipped with the
i-See sensor.
6Fastener 2Included when equipped with the
signal receiver.
7Fastener 2Included when equipped with the
i-See sensor.
8Wireless remote controller 1Included when equipped with the
wireless remote controller.
9Remote controller holder 1Included when equipped with the
wireless remote controller.
0LR6 AA batteries 2 Included when equipped with the
wireless remote controller.
13.5 × 16 tapping screws 2 Included when equipped with the
wireless remote controller.
45
8
6
23
7
8.2.2. Usingthewirelessremotecontroller
1Turn on the power to the unit at least 12 hours before the test run.
2Press the button for 5 seconds. (Fig. 8-5)
(Perform this operation when the remote controller display is turned off.)
3Press the button.
A [TEST] and the current operation mode are displayed. (Fig. 8-5)
4Press the button to activate cool mode, then check whether cool air is
blown out from the unit.
5Press the button to activate heat mode, then check whether warm air is
blown out from the unit.
6Press the button and check whether the fan speed changes.
7Press the button and check whether the auto vane operates properly.
8Press the
button to stop the test run.
(After two hours, a signal will be sent to stop the test run.)
Note:
• Pointtheremotecontrollertowardstheindoorunitreceiverwhilefollowing
steps 3to 8.
• ItisnotpossibletoperformthetestruninFAN,DRY,orAUTOmode.
Fig.8-5
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Fig.10-4
10.2.2.Removingthecornerpanel(Fig.10-4)
• Loosen the screw from the corner of the corner panel. Slide the corner panel as
indicated by the arrow 1to remove the corner panel.
AGrille
BCorner panel
CScrew
A
B
1
C
10.Installingthegrille
Fig.10-5
<Hook is in the raised position>
Main unit hook
<Grille hook> 10.3. Installingthegrille
• Please pay attention because there is a restriction in the attachment position of the
grille.
10.3.1.Temporarilyinstallingthegrille
• Align the screw holes in the corners of the grille with the screw mounting holes in
the corners of the main unit, latch the two hooks on the grille onto the drain pan
projections on the main unit, and temporarily hang the grille. (Fig. 10-5)
Caution:
Wheninstallingthei-Seesensorandsignalreceiver,placethejunctionwires
intheconnectorboxbeforetemporarilyhangingthegrille.
Referto7.2.1.onpage10toroutethejunctionwires.
B
A
D
CG
C
Fig.10-7Fig.10-6
10.3.2.Securingthegrille
• Secure the grille by tightening the four screws. (Fig. 10-6)
* Make sure that there are no gaps between the main unit and the panel or the panel
and the ceiling. (Fig. 10-7)
AMain unit
BElectric component box
C Screw with washer (Accessory)
DGrille
ECeiling
FMake sure that there are no gaps.
GTemporarily hanging hooks on the panel
Caution:
• WhentighteningthescrewwithcaptivewasherC,tightenitatatorqueof4.8
N•morless.Neveruseanimpactscrewdriver.
Itmayresultinpartsdamage.
• Aftertighteningthescrew,conrmthatthetwogrillehooks(Fig.10-5)are
latchedontothehooksonthemainunit.
ED
F
A
10.2. Preparingtoattachthegrille(Fig.10-2)
• With the gauge supplied with this kit, adjust and check the positioning of the unit
relative to the ceiling. If the unit is not properly positioned in the ceiling, there may
be air leaks, condensation may form, or the up/down vanes may not operate cor-
rectly.
• Make sure that the opening in the ceiling is within the following tolerances:
576 ×576 - 610 ×610
• Make sure that step A is performed within 37-42 mm. Damage could result by failing
to adhere to this range.
AMain unit
BCeiling
C Gauge (Accessory)
DCeiling opening dimensions
10.2.1.Removingtheintakegrille(Fig.10-3)
• Slide the levers in the direction indicated by the arrow 1to open the intake grille.
• Unlatch the hook that secures the grille.
* Do not unlatch the hook for the intake grille.
• With the intake grille in the “open” position, remove the hinge of the intake grille
from the grille as indicated by the arrow 2.
AIntake grille
BGrille
CIntake grille levers
DGrille hook
EHole for the grille’s hook
Fig.10-2
576 - 610 D
E
112
B
D
A
C
Fig.10-3
A=37 +5
0
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10.3.3.Connectingthewires
1Removethe one screw securingthe connectorboxcover,andthen open the cover.
2Securelyconnect the junction wireconnector ofthevanemotor and the panel vane
motor wire connector in the connector box. (Fig. 10-8)
There are two vane motor connectors: one blue connector and one orange con-
nector. Make sure that the connector colors match when connecting them.
3Close the connector box cover.
When closing the connector box cover, slide the cover in the direction indicated by
the arrow and make sure that the projection is rmly inserted. (Fig. 10-9)
AConnector box cover
BConnector box
CSecuring screw
DJunction connector
E Wire connector for the vane motor
FBand
Caution:
• Placethebandsecuringthepanelvanemotorwireintheconnectorboxas
showninthediagram.(Fig.10-10)
• Whenclosingtheconnectorboxcover,makesurethatthewiresdonotget
pinched.
Fig.10-9Fig.10-8
Fig.10-10
A
C
DB
E
F
E
E
D
F
E
C
10.Installingthegrille
10.3.4.Wiringthei-Seesensorcornerpanelandsignalreceiver
• Install the i-See sensor and signal receiver at the corners of the panel at the loca-
tions stamped with “○” or “□”. (The positions may be reversed.)
• Route the i-See sensor and signal receiver wires through the square holes at the
corners of the panel and install them.
• Connect the junction wire connector and the wire connectors of the i-See sensor
and signal receiver in the connector box.
• Close the connector box cover.
• Secure the i-See sensor and signal receiver wires to the panel with the fastener
as shown in the diagram so that there is no slack in the wires, and then cut off the
excess end of the fastener. (Fig.10-12)
• Place the i-See sensor and signal receiver wires to the inside of the ange on the
panel.
• If the position of the i-See sensor was changed from the “○” position (E) to the “□”
position (F), change the function settings. (Refer to page 13.)
Caution:
• Routethei-SeesensorandsignalreceiverwiresasshowninFig.10-13.
• Placetheexcessportionsofthei-Seesensorandsignalreceiverjunction
wiresintheelectriccomponentboxinthewireclipasshowninthediagram,
andsecurethewirestogetherwiththefastener.(Fig.10-14)
Makesurethatthebandsecuringthei-Seesensorandsignalreceiverjunction
wiresispositionedinsidetheconnectorbox.(Fig.10-15)
• Ifthevanemotorconnectorsandsignalreceiverconnectorareconnected
incorrectly,thevaneswillnotmoveorcommunicationwiththeremotecon-
trollerwillnotbepossible.
Ai-See sensor
BSignal receiver
CFastener
D Wire clip
E “○” stamp : default i-See sensor position
F “□” stamp : default signal receiver position
B
A
i-See sensor
or signal
receiver
Vane
Fig.10-13
Fig.10-11
Fig.10-12
Fig.10-14 Fig.10-15
C
D
BH79A367W01_01En.indd 19 2018/05/30 9:17:59
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