Haier AD072MQERA User manual

Pleasereadthismanualcarefullybeforeusing
Keepthisoperationmanualforfuturereference
Originalinstructions
AD072MQERA
AD092MQERA
AD122MQERA
AD152MQERA
AD182MQERA
AD242MQERA
AD282MQERA
AD302MQERA
AD362MQERA
AD422MQERA
AD482MQERA
AD542MQERA
Indoor UnitOperation &InstallationManual

Contents
If the supply cord isdamaged, it must be replaced bythemanufacturer, itsservice agent or
similarlyqualified personsin ordertoavoida hazard.
Thisappliance isnot intended foruse bypersons(including children)withreduced physical,
sensoryormentalcapabilities,orlackofexperienceandknowledge,unlesstheyhavebeengiven
supervisionorinstructionconcerninguseoftheappliancebyapersonresponsiblefortheirsafety.
Childrenshould be supervisedto ensurethat theydo not playwith theappliance.
Thisappliance can be used bychildrenagedfrom 8 yearsandabove and personswith
reduced physical, sensoryormentalcapabilitiesorlack of experience andknowledge if they
havebeen givensupervisionorinstructionconcerning useofthe applianceinasafe wayand
understandthehazardsinvolved. Childrenshallnot playwiththeappliance. Cleaning anduser
maintenance shallnot be madebychildren without supervision.
The appliancesare not intended tobe operatedbymeansof an externaltimerorseparate
remote-controlsystem.
Keep theappliance anditscordout of reach of childrenlessthan 8years.
Warning
MRVseriesmultipleairconditionersystems
adopttheconsistentrunningmode, bywhich,
allindoorunitscan onlybe heating or
refrigerating operation at the same time.
Toprotectthe compressor,theairconditioner
unit should bepowered on forover12 hours
before using it.
Allindoorunitsof the same refrigerating
systemshould use theunified powerswitch
to ensurethatall indoorunitsareinthe state
of beingpowered on at the same timeduring
the operation of airconditioner.
Yourairconditionermaybesubject to any
change owingto theimprovement of Haier
products.
UserManual
Partsand Functions 1
Safety 2
5
Fault Checkup
6
InstallationProcedures
14
Electrical Wiring
20
Test Run&Fault Code
4
Maintenance
Product Features
1.Functionof centralcontrol
(optional fromour company);
2.Automaticdisplayoffaultdetection;
3.Theair conditionerisprovidedwiththefunction
focompensation forpowersupply.During operation,
whenthepower supplyfailsemergentlyand
resumesagain,theair conditioner returnstothe
workingconditionbeforepowerfailure,if provided
withcompensationfunction.
4.Nowthisindoorunit onlyhaswiredcontroller
function,theindoorunitthathasremotecontroller
function needtosetin factoryespecially.
cooling
dry
heating
indoor
outdoor
indoor
outdoor
max.
min.
max.
min.
max.
min.
max.
min.
DB: 32
WB: 15
DB: 18
DB: 43
DB: -5
DB: 27
DB: 15
DB: 21
DB: -15
WB:23
WB:14
WB:26
OperatingRangeofAirConditioner

1
Partsand Functions
indoorunit
airduct
soft connection
airoutlet port
airinlet port

2
Safety
!!
!!
If theairconditioneristransferredtoanewuser, thismanual shallbetransferredtotheuser,together
withtheconditioner.
Beforeinstallation, besuretoreadSafetyConsiderationsinthismanualfor properinstallation.
Thesafetyconsiderationsstatedbelow isdivided into Warning”and Attention”.The matterson
severeaccidentscausedfromwronginstallation,whichis likelyto lead todeathorseriousinjury, are listed
in Warning”.However, the matterslistedin Attention”arealsolikelycausethe severeaccidents.
Ingeneral, bothofthemaretheimportant itemsrelatedtothesecurity,whichshouldbestrictlyabidedby.
After theinstallation, performtest runtomakesureeverythingisinnormalconditions,andthen operate
and maintain theair conditionerin accordance withthe User Manual. The UserManualshould be delivered
totheuser for proper keeping.
!Warning
!Attention
Theair conditioner shouldbeeffectively grounded.Electricshocksmayoccur if theair conditioner is
ungrounded or inappropriatelygrounded.Thewireforearthingshouldn’tbeconnected totheconnections
onthegaspipe,water pipe,lightningrodor telephone.
The breakerfor electricityleakageshould bemounted.If not, accidentssuchaselectricshocksmayhappen.
Theinstalledair conditioner should be checkedfor electricityleakagebybeing powered.
Iftheambienthumiditybiggerthan80%,whenthewaterdischargeholebeblockedor thefilter becomes
dirty, orairflowspeedchange,theremaybeleadstocondensing waterdropdown,andatthesametime
theremaybesomedropsofwaterspitout.
Pleaseaskthespecial maintenancestationfor installationandrepair. Waterleakage,electricshocksor
fireaccidentsmight becausedfromimproper installationifyouconducttheinstallationbyyour own.
Theinstallation shouldbeconductedproperlyaccordingtothismanual. Water leakage,electricshocksor
fireaccidentsmight becausedfromimproper installation.
Please makesure to install theair conditioner on the place wherecan bearthe weight of the airconditioner.
The air conditioner can’tbe installed on the grids such asthe non-special metal burglar-proofnet. The place
withinsufficientsupport strengthmight causethedropdownofthemachine, whichmaylead topersonal
injuries.
Theinstallationshouldbeensuredagainsttyphoonsandearthquakes,etc. Theinstallationunconformable
totherequirementswillleadtoaccidentsduetothe turnover of themachine.
Specificcablesshould be used for reliableconnectionsofthewirings.Pleasefixtheterminalconnections
reliably toavoidtheoutsideforceapplied on thecablesfrombeingimpressedonthe cables.Improper
connectionsandfixingsmight leadtosuchaccidentsasheatingorfireaccidents.
Correctshapesof wiringsshouldbekept while theembossedshapeisnotallowed.The wiringsshould
be reliably connected toavoidthecover and theplateoftheelectricalcabinetlippingthe wiring.Improper
installationmightcausesuchaccidentsasheatingor fireaccidents.
Whileplacingorreinstallingtheair conditioner,exceptthespecificrefrigerant(R410A), don’t lettheair go
intothe refrigerationcyclesystem.Theair intherefrigerationcycle systemmight leadtothecracking or
personalinjuriesduetoabnormalhigh pressureoftherefrigerationcyclesystem.
During installation,please usethe accompanied spare partsorspecificparts.If not, waterleakage,electric
shocks, fireaccidentsor refrigerant leakagemightbe caused.
Don’tdrainthe waterfromthe drainpipe to the waterspout where mayexistharmfulgasessuchassulfureted
gastoavoid theharmfulgasesentering intotheroom.
Duringinstallation, if refrigerant leakageoccurs, ventilationmeasuresshould be taken, for therefrigerant
gasmightgenerateharmfulgasesuponcontactingtheflame.
Afterinstallation, check if anyrefrigerant leakage exists. If the refrigerant gasleaksinthe room, such things
asair blowingheatersandstoves,etc. maygenerateharmfulgases.
Don’t installthe air conditioner attheplaceswhere the flammable gasesmayleak. In case thegasleakage
occursaround themachine, suchaccidentsasfiredisastersmaybecaused.
Thedrainpipeshouldbeproperlymountedaccordingtothis manualastoensurethesmoothdrainage.In
addition, heatpreservationshould be taken toavoidcondensation. Improperdrainpipemountingmight
causewaterleakage,whichwillget thearticlesat homewet.
Therefrigerantgaspipeand liquidpipe shouldbeheatinsulated topreserveheat. For inappropriateheat
insulation,thewater causedfromthecondensationwilldrop togetthearticle at homewet.

3
Safety
!Attention
Payattention to the
aeration condition
to avoid anoxic
symptom.
It isnot allowed to put anyheating
apparatusunderthe indoorunits, forthe
heat maycause distortion of the units.
Flammableapparatusshould not be placed
in the placewhere the airconditionerwind
could reach directly, orincomplete burning
of the apparatus
maybe caused.
3-minute protection
To protectthe unit, compressorcan be
actuated with at least 3-minute delayafter
stopping.
Close thewindow to avoidoutdoorair
getting in.
Curtainsorwindow
shutterscan be put
down to avoid the
sunshine.
Do notput flammable sprayclose to theair
conditioner.
Don’t injectflammable spraytowardsthe
airconditioner, which may
causefire.
Stopping fan rotation
The unit which stopsoperating willactuate
the fan fora 2-8 min swing every30-60
minutesforprotecting the unit while other
indoorunit are in the operating state.
Powershould be cut off when the air
conditionerisleft unused fora long period.
Powerwillbe consumed if the air
conditionerisnot powered off. The power
switch of the outdoorunitswitch shouldbe
powered on12 hoursin advance before
operation to protect the unit aftera long
period of storage.
Defrosting during heating
To improve theheating effect, the outdoor
unit will performdefrosting automatically
when frost appearson the outdoorunit
during heating (approximately2-10 min).
During defrosting, the fanof the indoorunit
runsat a low speed orstopswhile that of
the outdoorunitstopsrunning.
Donot use waterheaterorlike next to the
indoorunitand the wired controller.
Water/powerleakage orshort circuit may
happen ifthe steamgenerating apparatus
is working next to machine.
Use the fuse with propercapacity.
Metalwiresand copperwires,etc.,
maycause fire orotherfaults.
It cannot be used forthe preservation of
food, living creature, preciseinstrument
and artworks, etc, otherwise damage
mayoccur.
Plantsand animalsshould not be put to
the place where wind ofthe airconditioner
blowsdirectly, otherwise damage to
themmaybe caused.
Checkthe mount table
of the airconditionerfordamage fora long
period of operation.
If placed on thedamaged table, the
unit maydrop down causing damage.
Children should be supervised to ensure
thattheydo not playwith the appliance.
Thisappliance isnot intended foruse by
persons(including children)with
reducedphysical, sensoryormental
capabilities,orlackof experience and
knowledge, unlesstheyhave been given
supervision orinstruction concerning use
of the appliancebya person responsible
fortheirsafety.
Cleaning theunit with watermaycause
electricshock.
Do nottouchthe switchwith the wet
hand to avoid powershock.
Stop running and switch off the manual
powerswitch when cleaningthe
unit.
During the operation of the controlunit,
don’t switch off themanualpowerswitch
and the controllercan be used.Please do
not pressthe liquid crystalzone of
controllerto prevent damage.

4
Maintenance
Onlywhen theaircleanerisswitched offand disconnectedto the powersupplycanitbecleaned,
orelectricshockand injurymayappear.
Maintenance before and afterOperating Season
Before OperatingSeason:
1.Pleasemakethe following checkup. Ifabnormalcondition occurs,consult the after-service
personnel.
There isno blockage in inlet port and outlet port of outdoorand indoorunits.
The ground lineand the wiring areinthe properstate
2.Aftercleaning, the aircleanermustbe mounted.
3. Switchon tothe power.
AfterOperating Season:
1. In sunnydays, blowing operation can beperformed forhalf a dayto make the inside of
machine dry.
2. Electricalpowershould becut down toeconomize electricity, orthe machine willstill
consume power.Aircleanerand shellmust be mountedaftercleaning.
CleaningAirCleaner:
Don’t rinse the aircleanerwith hot waterof above 50 toavoid fading and distorting.
Don’t put theaircleaneronthe fire to dryto avoid catching fire.
Attention
Wipedust with waterordustcollector.
(A)Wipedust withdust collector. (B)Cleanitwith soft bushinmilddetergent
if there istoomuch dust on it
Throwoffthewaterandairing
it inthe cooldrycondition.
CleaningWind Deflector:
Donot wipe the wind deflectorwith waterforciblyto avoid fallingoff.
Cleaningthe airoutlet port and the shell:
Don’t usegasoline,benzene, diluents,polishing powderorliquid insecticideto clean them.
Donot clean them with hot waterof above 50 to avoid fadingordistorting.
Attention
Wipethemwithsoft drycloth.
Waterorneutraldrycleanserisrecommended if the dust cannot be removed.
TheWind Deflectorcan bedismantled to clean (asbelow).

5
Fault Checkup
Waterflow sound
Cracking sound
Terriblesmellin
outletair
Flashingoperating
indicator
Awaiting indication
Soundin
shutdown indoor
unit orwhite
steamorcold air
Clicking sound
whenswitching the
airconditionon
Startorstopworking
automatically
Failureto work
Badcooling&
heating effects
Symptoms Reasons
Waterflow sound can beheardwhen starting operation, during
operation orimmediatelyafterstopping operation. When it starts
toworkfor2-3 minutes, the sound maybecomelouder, whichis
the flowing sound of refrigerant orthedrainingsound of condensed
water.
Duringoperation, the airconditionermaymakethe cracking
sound,whichis caused from the temperaturechangesorthe
slight dilation of heat exchanger.
The terriblesmell, caused from walls,carpet,furniture, clothing,
cigarette and cosmetics, attacheson the conditioner.
Whenswitchingiton againafterpowerfailure,turnonthemanual
powerswitch and theoperating indicatorflashes.
Itdisplaystheawaiting indicationasitfailsto performrefrigerating
operation whileotherindoorunitsarein heating operation. When
theoperatorset itto therefrigerating orheating mode and the
operation isopposite to the setting,itdisplaysthe awaiting indication.
Topreventoilandrefrigerantfromblockingtheshutdownindoor
units,refrigerant flowsintheshorttime and makethe sounds
ofrefrigerantflowing. Otherwise, whenotherindoorunitsperforms
heating operation,white steammayoccur;duringrefrigerating
operation, cold airmayappear.
When theconditionerispowered on, thesound ismade due
tothe resetting of the expansionvalve.
Checkif it isin the state of Timer-ON and Timer-OFF.
Checkif there isapowerfailure.
Checkif the manualpowerswitch isturned off.
Checkif the supplyfuse and breakerare disconnected.
Checkif the protective unit isworking.
Check ifrefrigeratingand heating functionsareselected
simultaneously with the awaiting indication on line control.
Check ifairintakeportandairoutletportof outdoorunitsare
blocked.
Checkif the doorand windowsare open.
Checkifthefiltering screenof aircleanerisblocked with sludge
ordust.
Checkif the setting of wind quantityisatlow wind.
Checkif the setting of operationisat theFan Operation state.
Checkif the temperature setting isproper.
When otherabnormalconditionsoccur.
Underthe followingcircumstances,immediately stop the operation,disconnect themanualsupply
switch andcontact the after-service personnel.
When buttonsare inflexible actuated;
When it cannotstillbe operatedafterremoving the operation of protective unit;
When fuse and breakerhave been burnt overand over;
When there are foreignobjectsand waterin the refrigerator;
Please checkthefollowing when consigningrepairservice:

6
InstallationProcedures
(4)Thedimension of maintenance
Make surethat it iseasyto demount theelectrical
controlbox, fan, montor, filter.
The standardattachedaccessoriesof theunitsof thisseriesrefertothe packing; prepare other
accessoriesaccording tothe requirementsof the localinstallation point of ourcompany.
1. Before installation[beforefinishingtheinstallation,don tthrow away the attachedparts
requiredforthe installation]
Determine theroute tomove theunit to the installation site;
Don’t tearthe package open before moving theunit to the installation site. Whenunpacking is
needed, asoft materialorprotectorblockwithropescanbe usedto lift the unitto avoiddamaging
orscrapingof theunit.
2. Selecttheinstallation site
(1)The installation siteshould be selected according thefollowing conditions, whichshould be
approved byusers.
where an idealairdistributioncanbe ensured;
where there isnoblockagein the airpassage;
where the condensed watercan be drainedout properly;
where the strength canbearthe weight of the indoorunit;
where enough space can beensured formaintenance.The outside airshouldbe input from
the outdoordirectly from the blastpipe.If theblastpipecan’tbe jointed,the aircan’tbe input from
the suspended ceiling.
wherethelengthsof the piping between indoorunitsand outdoorunitsarewithinthe allowable
range (refertoInstallation of OutdoorUnits)
where the distanceof at least 1mbetween indoorunits,outdoorunits,mainssupply, connecting
wiresand television orradio shouldbe kept astoavoid the imagedisturbanceandnoisesof the
above electricalappliances. (Even if 1mcanbe ensured, noise might occurif there isstrong
electricwave.)Additionally, equipments, televisionorothervaluablescan’tbe put underthe unit
astoavoidthe condensed waterof theunitfrom dropping into the abovearticles,causing damaging.
(2)Height of Ceiling:
The ceilingshould be locatedat theplace, where the
centralposition of airoutlet port isless than 3m high
above theground.
(3)Hoistingstudsshouldbe usedduring installation.
Checkif the location can bearthe weight of the unit.
Reinforce it before installation if necessary.
checking
port
A
B
(locationofhangingbolt)
(dimensionsofinspectionholeonceiling)
barrier
checking
port
spaceneeded forinstallation (unit:mm)
D
D
(mm)
C
(mm)
B
(mm)
A
(mm)
AD072-182
MQERA
AD242-302
MQERA
Size
Model
786
986
1100
1300
472
472
635
635
AD362-542
MQERA 14041720 530 738

7
Installation Procedures
NB:
When the sizes of the main unit don"t match the hole on the ceiling, regulate the slot on the hanging
bracket.
Adjust the level with a level meter or according
to the following ways:
Adjusting the level
Make the adjustment as shown in the figure.
(2) If necessary, make a hole for installation and inspection on the ceiling. (used for the situation
with a ceiling)
For the size of the inspection hole on the ceiling, please refer to the above drawing.
Before installation, finish all the preparations for all piping connected to indoor units (refrigerant,
water drainage) and wiring (connection line of the line control, connection line between indoor
units and outdoor unit) so that they can be connected with indoor units right after installation.
For the inspection hole, the ceiling might be reinforced to keep the evenness of the ceiling
and avoid the vibration of the ceiling. For details, please consult the construction contractor.
notch grapping
notch plug plug
concrete
hoisting stud M10
(3) Install the hoisting studs (M10 bolts)
In order to support the weight of the unit, use barb
bolts in the situation with a ceiling. In the situation with
the new ceiling, use inlaid bolts, embedded bolts or
other parts provided on site. Before proceeding the
installation, adjust the gap between the bolt and the
ceiling.
M10 nut hoisting stud
M10 shim
M10 spring washer
main unit
(4) Installation of Indoor Units
Fix the indoor unit with the hoisting stud.
If necessary, the machine can be hanged
on the beam with bolts instead of the
hoisting stud.
3. Preparation before Installation
(1) Location relation between inspection hole on the
ceiling and the unit and the hoisting studs (unit: mm).
top
H
C
E
(mm)
C
(mm)
A
(mm)
AD072-182
MQERA
AD242-302
MQERA
Size
Model
786
986
472
472
750
950
AD362-542
MQERA 1404 530 1368
H
(mm)
695
695
798
level meter

8
InstallationProcedures
0~200
StaticPressureRange
StaticPressureRange
unit: Pa
1.5m~2m
ProperPiping
hangingbolt
heat insultor
gradientof1/100 or over
ImproperPiping
air outlet port
avoidlobing
avoidcurving
don't putpipe
intowater
(a)Keep agradient (1/50-1/100)of thedrainpipesand avoid lobingorcurving.
(c) Forthedrainpipe, the generalpurposehardPVC tube canbepurchased atlocalshops.During
the connection, insertthe end ofPVC tubeinto the washportand fasten itwith drainage hose
andthread clip. Bindingagentsshouldn’tbe used toconnectthewashport and drainage hose.
(b)When connecting the drainpipe to the equipment, don’t applytoo much force on oneside of
theequipment. Meanwhile, thepipingshould be positionedascloseto theequipment as
possible.
512mm
drainpipe 473mm
414mm
gaspipe liquidpipe
468mm
4. Drainpipes
AD072-302MQERA
468mm
405mm
738mm 30mm
30mm
467mm
AD362-542MQERA

9
InstallationProcedures
H1=100mm orblowerstaticpressure
H2=H1(orbetween 50~100mm)
1
2
indoorunit
Thehard PVC tube in the room must be provided with theheatinsulating layer.(e)
Don’t placethe drainpipesat the placeswhere there isirritant gas. Don’t put thedrainpipe
directlyinto thesewer,where there might be gaseswithsulfur.
(f)
(a)Provide about 1000ccof watertothe equipment via airoutlet port withthe feed pump.
(b)During refrigerating operation, checkthe drainage system..
Procedures
(a)Afterfinishing theelectricalsystem, test thedrainagesystem.
(b)During testing, make sure that the waterflow passesthepipingcorrectlywithout anywater
leakage at the connection.
(c) In thecondition of new house, test thedrainagesystem before fittingup the ceiling.
(d)Evenif it isinstalled in theseason neededto heating, the testing shouldalso be performed.
Testing Drainage System
washport
washport
main unit
drainage hose
joint(purchasedat local shop)
sealingwasher [for insulation]
(accessory)
hardPVC tube(purchased atlocalshop)
sealing washer [forinsulation](accessory)
sealingwasher [for insulation](accessory)
threadclip
(accessory)
drainagehose
binding
ensurethebiggest heightdifference
(about100mm)
gradient of 1/100or over
Whenthelaiddrainpipingis usedformultipleequipments,
the public piping should be lowerabout100mmthan the
washportsof equipments, asshown in thefigure.
Thickerpipesshould be used forthisapplication.
(d)
Backwaterbend
Because thedrainage waslaied in theposition of binging Subatmosphericpressure easily,
gainof elevation of waterinthe drain pan conducesdLeakagewater, foravoiding Leakage
water, design a Backwaterbend.
Configuration of Backwaterbend can becleaned, a "T"joint can be used in installing as
shown asinthe picture below.
Backwaterbendwasinstalled inthe neighborhood of airconditioning
Abackwaterbend wasdesigned in the middle of drainpipe sshown asinthe picture below.
(g)

10
InstallationProcedures
Beforecompletingtheelectricalconnection, agibboseconnectorshallbeinstalledonthedrainpipe
asto provide itwith awaterinlet port. Then,ifanyleakage existsin thepiping, check itto make
the waterflow of the drainpipe smooth.
pour water intoa
gibbose connector
installdrainpipe clamp
mainunit drainpipe
checkdrainage via
transparenttubesocket
insertthehoseinto
20mm-30mmoffeed
pipeat bottom
dismantle
rubber plug,
reinstallitafter installation
incorrect incorrect correct
5. Installation ofAirReturn& AirExhaustPipes
Forthe choiceandinstallation ofairreturn port,airreturn pipe, airexhaustportand exhaustpipe,
pleaseconsult service personnelof Haiercompany.Calculate the design chartand exteriorstatic
pressure, and select the exhaust pipe with appropriate length and shapes.
mainunit of air
conditioner
ceiling
suface
specialexhaust
port (purchased at
local shop)
exhaustpipe
(purchased
atlocal
shop) inspection
hole
air return
pipe
(purchase
datlocal
shop)specialairreturn
pipe(purchasedat
localshop)withair
cleaner
specialexhaust port
positioningwithbolt
blast pipe
air
air
The length difference between pipesshould belimited
to be lessthan 2:1;
Make the pipingasshort aspossible;
Keepthe min. elbow quantity;
Wind the heatinsulating materialaroundthe flange between the mainunitandthe exhaust
pipe forheat insulation and sealing. Installthepiping beforefitting
up theceiling.
At least2 metersairduct isneededat airinlet and airoutlet.
Flexible connection isneeded betweenindoorunitsandairduct.
ESPshould be lowerthan200Pa.
6. CautionsinInstallationof AirReturnPipe & ExhaustPipe
It is recommended touse the blast pipes, whichcan be
anti-condensation and absorbsound. (purchasedat localshops)
Complete the installation of the blast pipesbefore fitting upthe
suspended ceiling.
Heat insulation shouldbe made forthe blast pipes.
The specialexhaust portshouldbe arrangedat the place where
the airisdistributed evenly.
An inspection hole should be left on the surface of the ceiling for
future maintenance.

Remarks:
In installation, you can select the lowerairreturn orback airreturnbyadjusting the locationof
airinlet frame. Airreturn frombottom willinfluencethe unitnoise,so we suggest use rearreturn
installation.
7.Connectionof returnairduct(setting backairreturnopening whenleaving factory)
(1)Cutawaythenummularcomponentof
lateralboard (2)Install the nummularairpipe (airpipe can be purchased in localdistrict )
(3)Airproof thejoint byairproof cingulum avoiding
8.Concatenationmeans of exchanging fleshair
cut away
cut away
nummularairpipe
11
InstallationProcedures
FG
(mm)
F
(mm)
AD072-182MQERA
AD242-302MQERA
Size
Model 660
740 200 200
AD362-542MQERA 1280 235
backairreturnopening below airreturn opening

Note: Youcan selectnot to connectwiththe flange.
Instead ofit, you can usethe round plasticair
outlet (purchased byuser)
9.Install outletflange
Install outlet flange basising theneeds,the outlet
flange isstandard component,boltsarelaied in
accessoriesbox.
12
InstallationProcedures
Piping
Material
Heat Insulating
Material
Hard PVC tube
VP25mm(innerbore)
Vesicant polythene
thickness: over7mm
Tubing Permissible Length&Height Difference
Pleasereferto the attached manualof outdoorunits.
12. Refrigerant Tube
Piping Materials&Heat Insulating Materials
Asto prevent condensation, heat insulating treatment
should beperformed.The heat insulating treatment
forgasand liquidpiping shouldbedonerespectively.
10. Examples forBadInstallation
Theunit isnotequipped with the airreturn pipe andthe innerside of the suspending ceiling is
usedasthe blast pipe, causing thehumidityincreasingdue to irregularairmass,strongwind
orsunlight from the outside world.
Theremight becondensatedroppingdownat theouterside of the blastpipe. The humidityis
high, even if the innerside of the suspended ceiling isn’t used asa blast pipe in new concrete
buildings.At this time, the whole bodyshould usethe thermo woolforheat preservation (the
thermo woolcanbe packed with asteelwire).
It is operated underthe conditionsbeyond the limits, leading to the overload of thecompressor.
Affected bythe capacityof the exhaust fan, and thestrong wind and wind direction in the outer
flue, when the blowing quantityof the airconditionerexceedsthe limits, the drained waterof
the heat exchangerwilloverflow, causing waterleakage.
exhaust fan
example of bad installation
The staticpressurerange of each
gradeasfollows:
Grade Staticpressure range
10~25pa
2 25~75pa
3 75~125pa
4 125~175pa
5 175~200pa
11. Static Pressure GradeSetting
ForAD362~542MQERAunits, afterinstallation needto
preliminaryestimatesexternalstaticpressure, according to
the externalstaticpressuresettingthe unit'sstaticpressure
grade bycontroller.
Note: the detail operation methodsforsetting theunit*sstatic
pressure grade refertothe controllermanual.
ceiling

TubingMaterial
Model
TubingSize(mm) Gaspipe
Liquidpipe 9.52
13
InstallationProcedures
Connecting
circularterminals:
1. Connecting circularterminals:
The connecting method of circularterminal
is shown in the Fig. Take off the screw,
connect itto the terminaltierafterheading
itthroughtheringatthe end ofthelead and
then tighten it.
2.Connecting straight terminals:
The connection methodsforthe circular
terminalsare shown asfollows: loosen the
screw before putting the line terminalinto
the terminaltier,tighten the screw and confirm
ithasbeenclamped bypullingthe line gently.
3.Pressing connecting line
Afterconnecting line iscompleted, pressthe
connectingline withclipswhich shouldpress
on the protectivesleeve ofthe connecting
line.
Proceed the flaretubeconnecting operation to connect allthe refrigerant tubes.
Add the refrigerantaccording totheinstallationinstruction of outdoorunit. TheadditionofR410A
refrigerantmustbe performedwith ameasuregageto ensurethespecified amount orcompressor
failure can be caused byfilling too muchorlittlerefrigerant.
Tubing Materials&Specifications
Refrigerant FillingAmount
ConnectingProceduresof RefrigerantTubing
OuterDiameterof Tubing(mm) MountingTorque
78.4~98.0N.m
9.52 32.7~39.9N.m
15.88
19.05 97.2~118.6N.m
Dualwrenchesmust be used inthe connectionof indoorunit tubing.
Mountingtorquereferstothe right table
wrench
Cutting and Enlarging
Cutting orenlarging pipesshould be
proceeded byinstallation personnel
according to the operating criterion if the
tube istoo long orflareopening isbroken.
Checkif there isanyleakage at the
connecting partandbonnetwithhydrophone
orsoapsuds.
CheckupforAirLeakage
Openall the valvesofoutdoorunits.[NB:oil
balancing stop valve must be shut up
completely when connectedonemainunit.]
OpenAllValves
Vacuumizefromthe stop valve ofoutdoor
unitswith vacuumpump. Refrigerant sealed
inindoormachine isnotallowed to use for
vacuumization.
Vacuumizing
Connecting
correct
pressing terminal tier
pressing clip
wrong
pressing
6.35 11.8~13.7N.m
12.7 49.0~53.9N.m
15.88
Phosphordeoxybronzeseamless pipe (TP2)forairconditioner
AD242~542MQERA
6.35
9.52
AD072~092MQERA
6.35
12.7
AD122~182MQERA

14
Electrical Wiring
Warning
Attention
SupplyWiring Drawing
Sub Unit1of Outdoor
Unit Sub Unit 2of Outdoor Unit
Supply:3N~,380-400V,50/60HzSupply:3N~,380-400V,50/60HzSupply:3N~,380-400V,50/60Hz
IndoorUnit 1
Supply:1PH,220-230V~,50/60Hz Supply:1PH,220-230V~,50/60Hz Supply:1PH,220-230V~,50/60Hz
wallmountedtype IndoorUnit2wallmountedtype IndoorUnit2
exceptwall mountedtype
L1L2L3N G L1L2L3N G L1L2L3N G
L N
L N1 2
TW3 TW1 L N1 2 TW3 TW1
Breaker for
Electricity Leakage
Overflow Breaker
Breaker for
Electricity Leakage
Overflow Breaker
Breaker for
Electricity Leakage
Overflow Breaker
MainUnit of Outdoor
Unit
Breakerfor
Electricity Leakage Breaker for Electricity Leakage Breaker for Electricity Leakage
OverflowBreaker Overflow Breaker Overflow Breaker
Electricalconstructionshould be madewith specific mainscircuitbythequalifiedpersonnelaccording
to the installation instruction.Electricshock and fire maybe caused if the capacityof powersupply
isnot sufficient.
Duringarranging the wiring layout, specifiedcablesshouldbeusedasthe mainsline,whichaccords
with the localregulationson wiring. Connecting and fastening should be performed reliablyto avoid
the externalforce of cablesfromtransmitting to the terminals. Improperconnection orfastnessmay
lead to burning orfireaccidents.
There must be the ground connection accordingto the criterion. Unreliable grounding maycause
electricalshocks. Do not connect the grounding line to the gaspipe,waterpipe, lightening rod and
telephone line.
Onlycopperwirecan be used. Breakerforelectricleakage should be provided, orelectricshock
mayoccur.
The wiring of the mainslineisof Ytype. The powerplug Lshould be connected to the livewire
and plug N connected to nullwire while should be connected to the ground wire. Forthe type
with auxiliaryelectrically heating function, the live wireandthe null wire should not bemisconnected,
orthe surface of electricalheating bodywillbe electrified. If the powerline isdamaged, replace it
bythe professionalpersonnelof the manufacturerorservice center.
The powerline of indoorunitsshould be arranged according tothe installation instruction of indoor
units.
The electricalwiring shouldbeout of contact with thehigh-temperature sectionsof tubing asto avoid
melting the insulating layerof cables, which maycause accidents.
Afterconnected totheterminaltier, the tubingshould becurved into be a U-type elbowand fastened
with the pressing clip.
Controllerwiring and refrigerant tubing can be arranged and fixed together.
The machine can’t be powered on before electricaloperation. Maintenance should be done while
the powerisshut down.
Sealthe thread hole with heat insulating materialsto avoid condensation.
Signalline and powerline areseparatelyindependent, which can’tshareoneline. [Note: the power
line, signalline are provided byusers.Parametersforpowerlinesareshown asbelow: 3×(1.0-1.5)
mm2;parametersforsignalline:2×(0.75-1.25)mm2(shielded line)]
5 butt lines(1.5mm)are equipped in the machine before delivery, which are used inconnection
between the valveboxand the electricalsystem of the machine. The detailed connectionisdisplayed
in the circuit diagram.
Indoorunitsandoutdoorunitsshouldbeconnectedtothepowersourceseparately.Indoorunits
mustshareonesingleelectricalsource,butitscapacityandspecificationsshouldbecalculated.
Indoor&outdoorunitsshouldbeequippedwith the powerleakagebreakerandthe overflow breaker.

15
Electrical Wiring
PQABC
PQABC PQABC PQABC PQABC PQABC
ABC
ABC ABC ABC ABC
PQABC PQABC PQABC PQABC PQABC
ABC
ABC ABC ABC ABC
ABC ABC
PQABC PQABC PQABC PQABC PQABC
ABC ABC ABC ABC
ABC
PQABC PQABC PQABC PQABC
wired
controller
ABC
controlwireforwiredcontroller
withpolarity
communicationwirewithpolarity
outdoor1 outdoor2 outdoor 3
PQABCABC
indoor1 indoor2 indoor3 indoor4 indoor5
indoor6 indoor7 indoor8 indoor9 indoor10
indoor11 indoor12 indoor13 indoor14 indoor15
indoor16 indoor17 indoor18 indoor19 indoor20
wired
controller
wired
controller
wired
controller
wired
controller
wired
controller
wired
controller
wired
controller
wired
controller
wired
controller wired
controller
wired
controller wired
controller wired controller wired
controller
wired
controller wired
controller
SignalWiring Drawing
Outdoorunitsareofparallel connectionviathreelineswithpolarity.The mainunit,central control and all
indoorunitsareofparallelconnection viatwolineswithout polarity.
Therearethreeconnectingways betweenline controland indoorunits:
A. One line control controlsmultiple units,i.e.8 indoorunits, asshown in the above figure, (1-5 indoorunits).
Theindoor unit 5isthe line-controlled main unit andothersaretheine-controlled subunits.Theremoter
controlandthe main unit (directlyconnectedtotheindoor unit ofline control) areconnectedvia threelines
withpolarity.Other indoor unitsand themain unit areconnectedviatwolineswithpolarity.SW01 on the
main unit ofline controlissetto0whileSW01 on other subunitsofline controlaresetto1, 2, 3andsoon
in turn.
B. Onelinecontrolcontrolsoneindoor unit, asshownintheabovefigure(indoor unit6-19). Theindoor unit
andthelinecontrolareconnectedviathreelineswithpolarity.
C. Twoline controlscontrolone indoorunit,asshownin thefigure(indoorunit 20).Eitherofthe linecontrols
canbesettobethe master linecontrolwhiletheother issettobethe auxiliarylinecontrol. Themaster
linecontrolandindoor units,andthemasterandauxiliarylinecontrolsareconnectedviathree lineswith
polarity.
Whenthe indoorunitsarecontrolledbytheremotecontrol,switchover themodesbySwitchingModeof
Line-Controlled Main Unit/ Line-Controlled Sub Units/ Remote-Controlled Types.The signal terminalsneedn’t
tobeequipped withwiresand connectedtothe linecontrol.

16
Electrical Wiring

17
Electrical Wiring

18
Electrical Wiring
(C) Jumper definitiondescription
ElectronicexpansionvalvePMV manual controlsettings(CN27,CN29)
ManuallyfullyopenCN27: short circuitCN27 for2secondsafter power, the PMV fullyopened.
ManuallyfullycloseCN29:shortcircuitCN29 for 2secondsafter power, the PMVfullyclosed.