AIT L Split Series User manual

UK
83019600bUK – Translation of the original operating manual
Air/Water Heat Pumps
Outdoor installation
Operating Manual
L…Split – series

2Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
Table of Contents
1 Important information .......................................3
1.1 Safety information..........................................3
1.2 Personnelqualications................................3
1.3 Symbols...........................................................4
1.4 Safetyprecautions .........................................4
1.5 Serial number .................................................7
1.6 MaintenanceofL…Split................................7
1.7 Recovery .........................................................8
1.8 Environmentalinformation............................8
1.9 Checklist:Checksbeforecommissioning ..9
2 Deliveryandhandling.....................................10
2.1 Transportandstorage .................................10
2.2 Assembly.......................................................10
2.3 Removingthecovers...................................15
3 Theheatpumpdesign ...................................16
3.1 ListofcomponentsL…Split........................17
3.2 Electricalpanel .............................................18
3.3 Sensor............................................................19
4 Pipeconnections ..............................................21
5 Electricalconnections ....................................21
5.1 General ..........................................................21
5.2 Electricalcomponents.................................22
5.3 Accessibility,electricalconnection............22
5.4 Connections..................................................23
6 Commissioningandadjusting ....................24
7 Control - Heat pump........................................24
8 Disturbancesincomfort ................................25
9 Accessories.........................................................25
10 Alarm list...............................................................26
11 Technicaldata....................................................29
11.1 Dimensions ...................................................29
11.2 Soundpressurelevels.................................32
11.3 Technicalspecications.............................33
11.4 Workingarea.................................................35
11.5 CapacityandCOP .......................................35
11.6 Outputwithlowerfuseratingthan
recommended...............................................36
11.7 Electricalcircuitdiagram............................37

3
Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
1 Important information
Installationdata
Produkt L…Split
Serial number
Service code
Installation date
Installer
Alwaysspecifytheservicecodeandserialnumber.
Certicationthattheinstallationiscarriedoutaccordingtoinstructions
intheinstallermanualandapplicableregulations.
Date Signed
1.1 Safety information
Thismanualdescribesinstallationandserviceproce-
dures for implementation by specialists. The manual
mustbeleftwiththecustomer.
1.2 Personnelqualications
Allinstructionalinformationinthisoperatingmanualis
solelydirectedatqualied,skilledpersonnel.
Onlyqualied,skilledpersonnelareabletocarryout
theworkontheunitsafetyandcorrectly.Interference
by unqualied personnel can cause life-threatening
injuriesanddamagetoproperty.
► Ensure that the personnel are familiar with the
local regulations, especially those on safe and
hazard-awareworking.
► Only allow qualied personnel with “electrical”
training to carry out work on the electrical and
electronicsystems.
► Allow qualied, skilled personnel only to do any
otherworkonthesystem,e.g.
● Heatinginstaller
● Plumbinginstaller
● Refrigerationsysteminstaller
 (maintenancework)

4Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
1.3 Symbols
NOTE
Thissymbolindicatesdangerto
personormachine.
CAUTION
Thissymbolindicatesimportantinfor-
mationaboutwhatyoushouldobserve
whenmaintainingyourinstallation.
TIP
Thissymbolindicatestipsonhowto
facilitateusingtheproduct.
1.4 Safetyprecautions
CAUTION
Install the system in full accordance with this
installation manual.
Incorrectinstallationcancausebursts,personalinju-
ry,waterleaks,refrigerantleaks,electricshocksand
re.
Pay attention to the measurement values before
working on the cooling system, especially when
servicing in small rooms, so that the limit for the
refrigerant’s concentration is not exceeded.
Consultanexperttointerpretthemeasurementval-
ues.Iftherefrigerantconcentrationexceedsthelimit,
theremaybeashortageofoxygenintheeventofany
leak,whichcancauseseriousinjury.
Use original accessories and the stated compo-
nents for the installation.
Ifpartsotherthanthosestatedbyusareused,
waterleaks,electricshocks,reandpersonalinjury
mayoccurastheunitmaynotworkproperly.
Ventilate the working area well – refrigerant leak-
age may occur during service work.
Iftherefrigerantcomesintocontactwithnaked
ames,poisonousgasiscreated.
Install the unit in a location with good support.
Unsuitableinstallationlocationscancausetheunitto
fallandcausematerialdamageandpersonalinjury.
Installationwithoutsu󰀩cientsupportcanalsocause
vibrationsandnoise.
Ensure that the unit is stable when installed, so
that it can withstand earthquakes and strong
winds.
Unsuitableinstallationlocationscancausetheunitto
fallandcausematerialdamageandpersonalinjury.
The electrical installation must be carried out by
a qualied electrician and the system must be
connected as a separate circuit.
Powersupplywithinsu󰀩cientcapacityandincorrect
functioncancauseelectricshocksandre.
Use the stated cables for the electrical connec-
tion, tighten the cables securely in the terminal
blocks and relieve the wiring correctly
to prevent overloading the terminal blocks.
Looseconnectionsorcablemountingscancauseab-
normalheatproductionorre.

5
Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
Do not install the unit where corrosive gas (for
example nitrous fumes) or combustible gas or
steam (for example thinner and petroleum gases)
can build up or collect, or where volatile combus-
tible substances are handled.
Corrosivegascancausecorrosiontotheheatex-
changer,breaksinplasticpartsetc.andcombustible
gasorsteamcancausere.
Do not use the unit where water splashes may
occur, for example in laundries.
Theindoorsectionisnotwaterproofandelectric
shocksandrecanthereforeoccur.
Do not use the unit for specialist purposes such
as for storing food, cooling precision instru-
ments, freeze-conservation of animals,
plants or art.
Thiscandamagetheitems.
Do not install and use the system close to equip-
ment that generates electromagnetic elds or
high frequency harmonics.
Equipmentsuchasinverters,standbysets,medical
highfrequencyequipmentandtelecommunications
equipmentcana󰀨ecttheunitandcausemalfunctions
andbreakdowns.Theunitcanalsoa󰀨ectmedical
equipmentandtelecommunicationsequipment,
sothatitfunctionsincorrectlyornotatall.
Do not install the outdoor unit in the locations
stated below.
● Locationswhereleakageofcombustiblegascan
occur.
● Locations where carbon bre, metal powder or
otherpowderthatcanentertheair.
● Locations where substances that can a󰀨ect the
unit, for example, sulphide gas, chlorine, acid or
alkalinesubstancescanoccur.
● Locationswithdirectexposuretooilmistorsteam.
● Vehiclesandships.
●Locationswheremachinesthatgeneratehighfre-
quencyharmonicsareused.
● Locations where cosmetic or special sprays are
oftenused.
● Locationsthatcanbesubjectedtodirectsaltyat-
mospheres.Inthiscase,theoutdoorunitmustbe
protectedagainstdirectintakesofsaltyair.
● Locationswherelargeamountsofsnowoccur.
● Locationswherethesystemis exposed tochim-
neysmoke.
Check, after completed installation or service,
that no refrigerant leaks from the system in gas
form. Ifrefrigerantgasleaksintothehouseand
comesintocontactwithanaerotemp,anovenoroth-
erhotsurface,poisonousgasesareproduced.
Switch o󰀨 the compressor before opening/
breaching the refrigerant circuit.
Iftherefrigerantcircuitisbreached/openedwhilstthe
compressorisrunning,aircanentertheprocesscir-
cuit.Thiscancauseunusuallyhighpressureinthe
processcircuit,whichcancauseburstsandpersonal
injury.
Switch o󰀨 the power supply in the event of a ser-
vice or inspection.
Ifthepowersupplyisnotshuto󰀨,thereisariskof
electricshocksanddamageduetotherotatingfan.
Do not run the unit with removed panels or pro-
tection.
Touchingrotatingequipment,hotsurfacesorhigh
voltagepartscancausepersonalinjuryduetoentrap-
ment,burnsorelectricshocks.
Cut the power before starting electrical work.
Failuretocutthepowercancauseelectricshocks,
damageandincorrectfunctionoftheequipment.
CARE
Carry out the electrical installation with care.
Donotconnectthegroundleadtothegasline,wa-
terline,lightningconductorortelephoneline'sground
lead.Incorrectgroundingcancauseunitfaultssuch
aselectricshocksduetoshort-circuiting.
Use main switch with su󰀩cient breaking
capacity.
Iftheswitchdoesnothavesu󰀩cientbreaking
capacity,malfunctionsandrecanoccur.
Always use a fuse with the correct rating
in the locations where fuses are to be used.
Connectingtheunitwithcopperwireorother
metalthreadcancauseunitbreakdownandre.
Cables must be routed so that they are not
damaged by metal edges or trapped by panels.
Incorrectinstallationcancauseelectricshocks,
heatgenerationandre.
Do not install the unit in close proximity to loca-
tions where leakage of combustible gases can
occur.Ifleakinggasescollectaroundtheunit,re
mayoccur.

6Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
If the bottom frame of the outdoor section is cor-
roded, or in any other way damaged, due to long
periods of operation, it must not be used.
Usinganoldanddamagedframecancausetheunit
tofallandcausepersonalinjury.
If soldering near the unit, ensure that solder
residue does not damage the drip tray.
Ifsolderresidueenterstheunitduringsoldering,
smallholescanappearinthetrayresultinginwater
leakage.Topreventdamage,keeptheindoorunitin
itspackingorcoverit.
Do not allow the drainage pipe to exit into
channels where poisonous gases, containing
sulphides for example, can occur.
Ifthepipeexitsintosuchachannel,anypoisonous
gaseswillowintotheroomandseriouslya󰀨ectthe
user'shealthandsafety.
Insulate the unit's connection pipes so that the
ambient air moisture does not condense on them.
Insu󰀩cientinsulationcancausecondensation,which
canleadtomoisturedamageontheroof,oor,furni-
tureandvaluablepersonalproperty.
Do not install the outdoor unit in a location where
insects and small animals can inhabit.
Insectsandsmallanimalscanentertheelectronic
partsandcausedamageandre.Instructtheuser
tokeepthesurroundingequipmentclean.
Take care when carrying the unit by hand.
Iftheunitweightsmorethan20kg,itmustbecarried
bytwopeople.Wearsafetyglovestominimisethe
riskofcuts.
Dispose of any packaging material correctly.
Anyremainingpackagingmaterialcancauseperson-
alinjuryasitmaycontainnailsandwood.
Do not touch any buttons with wet hands.
Thiscancauseelectricshocks.
Do not touch any refrigerant pipes with your
hands when the system is in operation.
Duringoperationthepipesbecomeextremelyhotor
extremelycold,dependingonthemethodofopera-
tion.Thiscancauseburninjuriesorfrostinjuries.
Do not shut o󰀨 the power supply immediately
after operation has start.
Waitatleast5minutes,otherwisethereisariskof
waterleakageorbreakdown.
Do not control the system with the main switch.
Thiscancausereorwaterleakage.Inaddition,the
fancanstartunexpectedly,whichcancauseperson-
alinjury.

7
Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
1.5 Serial number
Youcanndtheservicecodeandtheserialnumber
(PF3)ontheright-handsideofL…Split.
CAUTION
Youneedtheproduct’sservicecode
andserialnumberforservicingand
support.
1.6 MaintenanceofL…Split
Regularchecks
Your HSV Split only requires minimal maintenance.
Thecondensationhoseshouldbecheckedtoensure
thatcondensationcanrunouttoadrain.Ifthereisany
suspicion of leakage, pipe connections on L…Split
shouldbechecked.
NOTE
Insu󰀩cientoversightcancauseseri-
ousdamagetoL…Splitwhichisnot
coveredbytheguarantee.
CheckinggrillesandbottompanelonL…Split
Checkthattheinletgrilleisnotcloggedbyleaves,
snoworanythingelseregularlythroughouttheyear.
Youshouldbevigilantduringwindyconditionsand/
orintheeventofsnowasthegrillescanbecome
blocked.
Alsocheckthatthedrainholesinthebottompanel
(three)arefreefromdirtandleaves.
Regularlycheckthatcondensationisroutedaway
correctlythroughthecondensationpipe.Askyour
installerforassistanceifrequired.
Cleaningtheoutercasing
Ifnecessarytheoutercasingcanbecleanedusinga
dampcloth.Caremustbeexercisedsothattheheat
pumpisnotscratchedwhencleaning.Avoidspraying
waterintothegrillesorthesidessothatwaterpene-
tratesintoL…Split.PreventL…Splitcomingintocon-
tactwithalkalinecleaningagents.

8Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
Keepfreeofsnowandice
Preventsnowfrombuildingupandcoveringthegrilles
anddrainholesonL…Split.
Keepfreeofsnowand/orice.
Silentmode
Theheatpumpcanbesetto"silentmode",which
reducestheheatpump'snoiselevel.Thefunctionis
usefulwhenL…Splitmustbeplacedinnoisesensi-
tiveareas.Thefunctionshouldonlybeusedforlimit-
edperiodsasL…Splitmaynotreachitsdimensioned
output.
Savingtips
Yourheatpumpinstallationproducesheatandcool-
ingand/orhotwater.Thisoccursviathecontrolset-
tingsyoumade.
Factorsthata󰀨ecttheenergyconsumptionare,for
example,indoortemperature,hotwaterconsump-
tion,theinsulationlevelofthehouseandwhetherthe
househasmanylargewindowsurfaces.Theposition
ofthehouse,e.g.windexposureisalsoana󰀨ecting
factor.
Alsoremember:
● Openthethermostatvalvescompletely(exceptin
the rooms that are to be kept cooler for various
reasons, e.g. bedrooms). The thermostats slow
the ow in the heating system, which the heat
pump wants to compensate with increased tem-
peratures. It then works harder and consumes
moreelectricalenergy.
● Reduce or adjust the settings for heating in any
externalcontrolsystems.
1.7 Recovery
Leavethedisposalofthepackagingtothe
installer who installed the product or to
specialwastestations.
Donotdisposeofusedproductswithnor-
malhouseholdwaste.Itmustbedisposedofataspe-
cialwastestationordealerwho providesthistypeof
service.
Improper disposal of the product by the user results
inadministrativepenaltiesinaccordancewithcurrent
legislation.
1.8 Environmentalinformation
Thisunitcontainsauorinatedgreenhousegasthatis
coveredbytheKyotoagreement.
The equipment contains R410A, a uorinated green-
housegaswithaGWPvalue(GlobalWarmingPoten-
tial) of 2088. Do not release R410A into the atmos-
phere.

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1.9 Checklist:Checksbeforecommissioning
Refrigerantsystem Notes Checked
Pipelength o
Heightdi󰀨erence o
Pressurization test o
Leaktesting o
Endpressurevacuum o
Pipe insulation o
Electricalinstallation Notes Checked
Property'smainfuse o
Group fuse o
Loadmonitor/currentsen-
sor(Connectstoindoormod-
ule/controlmodule.)
o
KWS o
Wheninstalling
L6Split/HSVSplit6,
checkthatthesoftwarever-
sionoftheindoormodule/
controlmoduleisatleast
v8320.
o
Cooling Notes Checked
Pipesystem,condensation
insulation
o

10 Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
2 Deliveryandhandling
2.1 Transportandstorage
L…Splitmustbetransportedandstoredvertically.
NOTE
Ensurethattheheatpumpcannotfall
overduringtransport.
2.2 Assembly
● PlaceL…Splitoutdoorsonasolidlevelbasethat
cantaketheweight,preferablyaconcretefounda-
tion.Ifconcreteslabsareusedtheymustreston
asphaltorshingle.
● The concrete foundation or slabs must be posi-
tionedsothattheloweredgeoftheevaporatoris
attheleveloftheaveragelocalsnowdepth;how-
ever,aminimumof300mm.
● L…Split sollte should not be positioned next to
noisesensitivewalls,forexample,nexttoabed-
room.
● Also ensure that the placement does not incon-
veniencetheneighbours.
● L…Split must not be placed so that recirculation
of the outdoor air can occur. This causes lower
outputandimpairede󰀩ciency.
● The evaporator should be sheltered from direct
wind,whichnegativelya󰀨ectsthedefrostingfunc-
tion. Place L…Split protected from wind against
theevaporator.
● Large amounts of condensation water, as well
as melt water from defrosting, can be produced.
Condensationwatermustbeledo󰀨toadrainor
similar.
● Caremustbeexercisedsothattheheatpumpis
notscratchedduringinstallation.
DonotplaceL…Splitdirectlyonthelawnorothernon
solidsurface.
Ifthereisariskofsnowslipfromroof,aprotec-
tiverooforcovermustbeerectedtoprotecttheheat
pump,pipesandwiring.

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Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
Liftfromthestreettothesetuplocation
Ifthebaseallows,thesimplestthingistouseapallet
trucktomovetheL…Splittothesetuplocation.
NOTE
Thecentreofgravityiso󰀨settoone
side(seeprintonthepackaging).
IfL…Splitneedstobetransportedacrosssoftground,
suchasalawn,werecommendthatacranetruckis
usedthatcanlifttheunittotheinstallationlocation.
WhenL…Splitisliftedwithacrane,thepackaging
mustbeundamagedandtheloaddistributedwitha
boom,seetheillustrationabove.
IfacranecannotbeusedL…Splitcanbetransported
usinganextendedsacktruck.L…Splitmustbeused
onthesidemarked"heavyside"andtwopeopleare
requiredtogettheL…Splitup.
Liftfromthepallettonalpositioning
Beforeliftingremovethepackagingandthesecuring
strap to the pallet.
Placeliftingstrapsaroundeachmachinefoot.Lifting
fromthepallettothebaserequiresfourpersons,one
foreachliftingstrap.
Itisnotpermittedtoliftanythingotherthanthema-
chinefeet.
Scrapping
Whenscrapping,theproductisremovedinreverse
order.Liftbythebottompanelinsteadofapallet!
Condensationruno󰀨
Condensationrunsoutontothegroundbelow
L…Split.Toavoiddamagetothehouseandheat
pump,thecondensationmustbegatheredand
drainedaway.
NOTE
Itisimportanttotheheatpumpfunc-
tionthatcondensationwaterisled
awayandthatthedrainfortheconden-
sationwaterruno󰀨isnotpositionedso
thatitcancausedamagetothehouse.
NOTE
Toensurethisfunction,theaccessory
KWSshouldbeused.(Notincluded)
NOTE
Theelectricalinstallationandwiring
mustbecarriedoutunderthesupervi-
sionofanauthorisedelectrician.
NOTE
Selfregulatingheatingcablesmustnot
beconnected.
● Thecondensationwater(upto50litres/24hrs)
mustberoutedawaybyapipetoanappropriate
drain,itisrecommendedthattheshortestoutdoor
lengthpossibleisused.
● The section of the pipe that can be a󰀨ected by
frostmustbeheatedbytheheatingcabletopre-
ventfreezing.
● RoutethepipedownwardfromL…Split.
● Theoutletofthecondensationwaterpipemustbe
atadepththatisfrostfreeoralternativelyindoors
(withreservationforlocalordinancesandregula-
tions).
● Useawatertrapforinstallationswhereaircircu-
lationmayoccurinthecondensationwaterpipe.
● Theinsulationmustbetightagainstthebottomof
thecondensationwatertrough.

12 Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
Drainpanheater,control
Thedrainpanheaterissuppliedwithpowerwhenone
ofthefollowingconditionsismet:
1. Thecompressorhasbeeninoperationforatleast
30 minutes after last start..
2. Theambienttemperatureislowerthan1°C.
Recommendedalternativeforleadingo󰀨
condensationwater
Drainindoors
1Joint
2Water seal
Thecondensationwaterisleadtoanindoordrain
(subjecttolocalrulesandregulations).
Routethepipedownwardfromtheair/waterheat
pump.
Thecondensationwaterpipemusthaveawaterseal
topreventaircirculationinthepipe.
KWSsplicedasillustrated.Piperoutinginsidehouse
notincluded.
Stonecaisson
1Frostproofdepth
Ifthehousehasacellarthestonecaissonmustbe
positionedsothatcondensationwaterdoesnota󰀨ect
thehouse.Otherwisethestonecaissoncanbeposi-
tioneddirectlyundertheheatpump.
Theoutletofthecondensationwaterpipemustbeat
frostfreedepth.

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Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
Gutterdrainage
NOTE
Bendthehosetocreateawaterseal,
see illustration.
1Fromair/waterheatpump
2Water seal
3Water seal
4Frostfreedepth
● Theoutletofthecondensationwaterpipemustbe
atfrostfreedepth.
● Routethepipedownwardfromtheair/waterheat
pump.
● The condensation waterpipe musthavea water
sealtopreventaircirculationinthepipe.
● Theinstallationlengthcanbeadjustedbythesize
ofthewaterseal.
CAUTION
Ifnoneoftherecommendedalterna-
tivesisusedgoodleado󰀨ofconden-
sationwatermustbeassured.

14 Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
Installation area
TherecommendeddistancebetweenL…Splitandthe
housewallmustbeatleast15cm.Clearanceabove
L…Splitshouldbeatleast100cm.However,free
spaceinfrontmustbe100cmforfutureservicing.
1Freespacebehind
2MinimumdistanceduringuseofseveralL…Split
3However,thefreespaceinfrontmustbe100cmforfutureservicing
4MinimumdistanceduringuseofseveralL…Split
30cm
100cm
30cm
15cm

15
Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
2.3 Removingthecovers
L6Split
L8Split
L12Split

16 Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
3 Theheatpumpdesign
ComponentlocationsL6Split
ComponentlocationsL8Split

17
Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
ComponentlocationsL12Split
3.1 ListofcomponentsL…Split
Pipeconnections
QM36 Servicevalve,liquidside
QM37 Servicevalve,gasside
XL20 Connection,service
XL52 Connection,gasline
XL53 Connection,liquidline
Electricalcomponents
EB11(DH) Drain pan heater
GQ1(FM01) Fan
GQ2(FM02) Fan
PWB1 Controlboard
PWB2 Inverterboard
PWB3 Filterboard
X1(TB) Terminalblock,incomingsupplyand
communication
Coolingcomponents
EB10(CH) Compressor heater
EP1 Evaporator
GQ10(CM) Compressor
QN1(EEV-H) Expansionvalve,heating
QN2(20S) 4-wayvalve
QN3(EEV-C) Expansionvalve,cooling
Sensorsetc.
BP2(63H1) Highpressurepressostat
BP8(LPT) Lowpressuretransmitter
Miscellaneous
PF3 Serial number plate
DesignationsatcomponentpositionsaccordingtostandardEN81346-2.
Designationswithinbracketsaccordingtothesupplier’sstandard.

18 Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
3.2 Electricalpanel
Componentlocations
L…Split,L6Split
ElectricalcomponentsL…Split
CH Compressor heater
DH Drain pan heater
FFuse
FM01 Fan motor
PWB1 Controlboard
PWB2 Inverterboard
PWB3 Filterboard
TB Terminalblock,incomingsupplyand
communication
1Cableholder
Componentlocations
L8Split
Designationsatcomponentpositionsaccordingto
standardEN81346-2.
Designationswithinbracketsaccordingtothe
supplier’sstandard.

19
Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
Componentlocations
L12Split
BE1(CT) Current sensor
BT28(Tho-A) Outdoortemperature
BP1(63H1) Highpressurepressostat
BP2(LPT) Lowpressuretransmitter
GQ1(FM01) Fan
GQ2(FM02) Fan
GQ10(CM)
Compressor
1Reactor
2AFmodul
3Diodemodul
4Capacitor
5PWB2
5
4
3
2
1
3.3 Sensor
Positioningthetemperaturesensor
OutdoormoduleL6Split
OutdoormoduleL8Split/L12Split
1Incomingsupply
QN1(EEV-H) Expansionvalve,heating
QN2(20S) 4-wayvalve
QN3(EEV-C) Expansionvalve,cooling
Tho-D Hotgassensor
Tho-R1 Evaporatorsensor,out
Tho-R2 Evaporatorsensor,in
Tho-S Suctiongassensor

20 Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH
DataforsensorininL8Split,L12Split
Tho-D
Tho-S,Tho-R1,Tho-R2
Tho-A(BT28)
DataforsensorininL6Split
Tho-D
Tho-A,R
1Resistance(kΩ)
2Temperature(°C)