System air Topvex FR03 Manual

TopvexFR03,FR06,FR08,andFR11
CompactAirHandlingUnit
OperationandMaintenance
Instructions
206575-EN_GB
100113V .10-01(C.1.2-1-00)

Contents
1Warnings...................................................................................................................................1
2ProductDescription....................................................................................................................2
2.1Principledrawing..............................................................................................................2
2.2ComponentdescriptionELandHWunits...........................................................................3
2.3HeatExchanger...............................................................................................................4
2.4HeaterBattery..................................................................................................................4
2.5ElectricalHeater...............................................................................................................4
2.6HotWaterHeater.............................................................................................................4
3InterfaceDescription..................................................................................................................5
3.1ControlPanel...................................................................................................................5
3.2Operatingthecontrolpanel...............................................................................................5
3.2.1Navigatingthemenus..............................................................................................6
4Commisioning............................................................................................................................7
4.1BeforeStartingtheSystem...............................................................................................7
4.2InitialConguration...........................................................................................................7
4.3SoftwareDescription.........................................................................................................8
4.4Freecoolingdescription....................................................................................................13
4.5Changingfanspeed.........................................................................................................13
4.6Finetuningoffanspeed....................................................................................................14
5Maintenance..............................................................................................................................15
5.1Important.........................................................................................................................15
5.2MaintenanceIntervals.......................................................................................................15
5.3MaintenanceInstructions..................................................................................................16
5.3.1ChangingSupply/Extractairlter.............................................................................16
5.3.2Checkingtheheatexchanger..................................................................................16
5.3.3Checkingthefans...................................................................................................19
5.3.4Cleaningextractlouvresandinletdiffusers...............................................................19
5.3.5Checkingtheoutdoorairintake................................................................................19
5.3.6Checkingtheductsystem........................................................................................19
5.3.7ChangingtheInternalBattery..................................................................................20
5.4Troubleshooting...............................................................................................................21
5.4.1Alarms...................................................................................................................22

1Warnings
Thefollowingadmonitionswillbepresentedinthedifferentsectionsofthedocument.
Danger
MakesurethattheMainssupplytotheunitisdisconnectedbeforeperforminganymaintenanceor
electricalwork!
Warning
•Theinspectiondoorsareheavy!Takecarewhenopeningiftheunitisceilingmountedwiththe
inspectiondoorsfacingdownwards.
•Whenopeningtheinspectiondoors,iffacingdownwards,makesuretoopenthedoorontheexhaust
airside(theunitsectionwheretheoutdoorconnectionsarelocated)rstbeforeopeningtheother
door.ThedoorcanalsobeidentiedthroughaSystemairlogoattachedtoit.
•AlthoughtheMainssupplytotheunithasbeendisconnectedthereisstillriskforinjuryduetorotating
partsthathavenotcometoacompletestandstill.
•Bewareofsharpedgesduringmountingandmaintenance.Useprotectiveclothing.
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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2ProductDescription
2.1Principledrawing
Fig.1Righthandconnectedunit
Fig.2Lefthandconnectedunit
PositionDescriptionSymbol
1ConnectionsupplyairA
2ConnectionexhaustairB
3ConnectionoutdoorairC
4ConnectionextractairD
5Filtersupplyair
6Filterextractair
7Fansupplyair
8Fanextractair
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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2.2ComponentdescriptionELandHWunits
Fig.3ComponentsELunits
Fig.4ComponentsHWunits
Table1:ComponentdescriptionsELandHWunits
PositionDescription
1Fansupplyair
2Fanextractair
3Filterextractair
4Filtersupplyair
5Heatexchanger
6Rotormotor
7Re-heaterbattery,waterorelectric
8Resetbutton,manualoverheatprotection(onlyunitswithelectricalheater)
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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ComponentdescriptionsELandHWunits(cont'd.)
PositionDescription
9Electricalconnectionbox
10Mountingbrackets
11Inspectiondoors
2.3HeatExchanger
Thisunitisequippedwithahighefcientrotatingheatexchanger.Requiredsupplyairtemperatureis
thereforenormallymaintainedwithoutaddingadditionalheatviathebuiltinre-heaterbattery(wateror
electric).Theoperationoftheheatexchangerisautomaticanddependsonthesettemperature.Theheat
exchangerisremovableforcleaningandmaintenance.
2.4HeaterBattery
Theunithasabuiltinheaterbattery(waterorelectric).Theoperationoftheheatingbatteryisautomatic
anddependentonthesettemperature.
2.5ElectricalHeater
Theheatingrodsarelocatedintheheaterbesidethesupplyairfanandthematerialisstainlesssteel.
Theelectricheatingcoilhasbothautomaticandmanualoverheatingprotection.Themanualoverheat
protectionisresetbypushingtheredbuttonontopoftheelectricalheaterframe(pos.8,gure3).The
powerdemandoftheelectricheatingcoiliscontrolledbyatriacpowerregulator(Pulser)accordingtothe
desiredsupply/extractorroomairtemperaturethatissetinthecontrolpanel.
2.6HotWaterHeater
InHWunitsthehotwatercoilislocatedbesidethesupplyairfan(gure4.)Thecoilismountedwiththe
connectionpipesprojectingfromthesideoftheunitandisthereforeeasytoconnect.Thematerialis
copperpipingwithaframeofgalvanizedsheetsteelandaluminiumns.Thecoilhasaventingnippleand
animmersionsensorasfrostguard.Ifthereisariskoffreezinginthehotwatercoil,thecontrolvalve
isforcedopentopreventfreezing.Ifthereisstillariskoffreezing,theunitisstoppedandtheoutdoor
airdampers(accessory)areclosed.
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3InterfaceDescription
3.1ControlPanel
TheSCPcontrolpanelisdeliveredwitha10mcablethatisconnectedtothepanelandwithafast
couplingcontact,connectedtotheTopvexunit.ThecontactisconnectedtotheCorrigocontrollerinthe
electricalconnectionbox(gure3).Thecablecanbeunscrewedinthebackofthecontrolpanel(gure5).
Generalinformationisshowningure5.
3.2Operatingthecontrolpanel
Fig.5Thecontrolpanel
Posi-
tion
Explanation
1Alarmbutton:Givesaccesstothealarmlist
2AlarmLED:Indicatesalarmbyashingredlight
3WriteLED:Indicatesbyashingyellowlightthatparameterscanbesetorchanged
4OKbutton:Pressthisbuttontobeabletochangeorsetparameterswheneverpossible.Also
usedtomovebetweenchangeableparametersinonedialoguewindowframe
5Cancelbutton:Usedtoabortachangeandreturntotheinitialsetting
6Right/Left&Up/Downbuttons:Usedtomoveup,down,left&rightinthemenutree.Up/Down
buttonsarealsousedtoincreaseordecreasevalueswhensettingorchangingparameters
7Mountingholes
8Connectionblock
9Connectiontoyellowcable
10Connectiontoorangecable
11Connectiontoredcable
12Connectiontobrowncable
13Connectiontoblackcable
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3.2.1Navigatingthemenus
Thestartdisplay(thedisplaynormallyshown)isattherootofthemenutree.PressingDOWNwillmove
youthroughthemenuoptions.UPwillmoveyoubackthroughtheoptions.T oenterahighermenulevel,
useUPorDOWNtoplacethecursoratthemenuyouwishtoaccessandpressRIGHT.Ifyouhave
sufcientlogonprivilegesthedisplaywillchangetothemenuyouhavechosen.
AteachleveltheremaybeseveralnewmenuswhichyoumovethroughusingUP/DOWN.Sometimes
therearefurthersubmenuslinkedtoamenuormenuitem.Thisisindicatedbyanarrowsymbolatthe
right-handsideofthedisplay.Toenteramenu,pressRIGHTagain.T ostepbacktopreviousmenu
level,useLEFT .
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4Commisioning
4.1BeforeStartingtheSystem
Whentheinstallationisnished,checkthat:
•Theunitisinstalledinaccordancewiththeseinstructions
•Theunitiscorrectlywired
•Soundattenuatorsareinstalledandthattheductsystemiscorrectlyconnectedtotheunit
•Outdoorairintakeispositionedwithsufcientdistancetopollutionsources(kitchenventilatorexhaust,
centralvacuumsystemexhaustorsimilar)
•Allexternalequipmentareconnected
•Thefollowingdataisavailable:
•Intendedconguration,forexampletemperaturecontrolfunctions,fancontrol,externalcontrol
functionsetc.
•Howtheunitissupposedtooperateaccordingtoaweeklyschedule(normalandreducedspeed)
4.2InitialConguration
Therearefourthingstoconsiderwhenstartingupthesystem:
•Languagesetup
•Controltemperature
•Weeklyschedule
•Typeoffunction
Allthesecanbesetduringstartup.
1SettingLanguage
PresstheOKbuttonwhileswitchingonthemains
supply.
ThenpresstheOKbuttonagainafterwhich
thecursorappears.Chooselanguagewiththe
UP/DOWNbuttons.Conrmthechoicewiththe
OKbuttonafterwhichthecursordisappears.Press
theLEFTbuttontogobackinthemenus.
ThelanguagecanalsobechangeintheLanguage
menu,seethecontrolunitmanual.
2SettingControlTemperature
SetcontroltemperaturebychoosingControl
temp.andeditthevaluetothedesired
temperature.
Thevaluecanbebetween16°Cand30°C.
3SettingWeeklySchedule
SetthetimeanddatebychoosingTime/Date
andeditthevaluestovalidtimeanddate.
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4
SettheweeklyschedulebychoosingWeek
programandeditthevalues.Formore
information,seesection4.3.
5SettingTypeofFunction
TheunitispresetforNotActive.
ChangethefunctionbychoosingFunctionsand
thensomeofthemenualternatives.Formore
information,seesection4.3.
4.3SoftwareDescription
MenuItemSub-menu
Item
Sub-sub-
menuItem
Explanation
Man/Auto:ShowiftheunitisrunninginManualor
Automaticmode.
Fanspeed:ShowifthefansarerunningonLow,Mediumor
Highspeedoriftheunitisstopped
Extended
/Forced
running
Activateextended/forcedrunning.
Extended/Forcedrunningisthetimetheunitgoes
fromshutdownmode,LoworMediumfan-speed
tothefanspeedofyourchoice.OFFandON
timesandfan-speedsaresetatthesubmenu
Weekprogram.
Control
temp.
Setthedesiredcontroltemperaturevalue,
16-30°C.
RunningmodeSettherunningmodeoftheunit.Choose
between:Auto,Manualhigh,Manual
medium,Manuallow,orManualshutoff.
ServiceLoginwith1111toservicelevel.Log’soutafter5
minutesofinactivity,withmainsupplyon.
Time/DateSetthepresenttime,dateandweekday.
Week
program
SettheunitsONtimeforeachweekday,2
periods/day
PresettimeisPeriod1.07:00-16:00
Monday-SundayandPeriod2.00:00-00:00
Monday-Sunday,00:00-00:00inactivatesthe
period.
Forcontinuousrun00.00–23.59mustbeset
Setthefan-speedwhentheunitisontoLow,
MediumorHighandthefan-speedwhentheunit
isofftoshutoff,Low,MediumorHigh.
Presetis:ON=Medium(75%)andOFF=Low
(35%).
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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MenuItemSub-menu
Item
Sub-sub-
menuItem
Explanation
Extended
/Forced
running
Sethowmanyminutes(0-240)theunitshould
gotothedesiredfanspeedaccordingtobelow
setting.
Setthedesiredfanspeedfortheextended/forced
runningmode.ChoosebetweenHigh,Medium
orLow
Activatingextendedrunningcanbedone
bypressingtheOKbuttoninsubmenu
Extended/forcedrunning(userlevel)orby
usinganexternaltimerorapushbutton.Setthe
minutesto0whenusingatimer.
Filter
alarm
ResetlteralarmbysettingtheResetalarm
toYes.
Note:
Thelteralarmneedstoberesetintheservice
menuinordertodisappearfromthealarmlist
Setthetimeuntilthelteralarmshouldbe
activated,1-15month.
FunctionsCoolingSetthestatusforCoolingtoActiveorNot
Active.
Presetis:NotActive.
Function:Controlsacold-watercoolingbattery
witha0-10VDCsignal.
Cool
Recycling
SetthestatusforCoolRecyclingtoActive
orNotActive.
Presetis:NotActive.
Function:Startstheheatexchanger,torecycling
thecoldextractairtemperature,whentheextract
temperatureis3KlowerthantheFreshair
temperature.
Free
cooling
SetthestatusforFreecoolingtoActiveor
NotActive.
Presetis:Active.
Function:Startsthefansundercertainconditions
tousethecoolnightairtocooldowntheinterior
ofthebuildingduringnighttimebetweenStart
CoolingHour(0:00)andStopCooling
Hour(06:00).
Freecoolingactive:Yes(changeable,
YesorNo)
Outdoortempactivation22°C
(changeable,theaveragedaytimetemp.needsto
beoverthisvalueinordertostartthefunction)
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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MenuItemSub-menu
Item
Sub-sub-
menuItem
Explanation
Outdoor
temperature
night
High:15.0°C(changeable,Outdoortemp.
needstobebelowthisvaluetostartthefunction)
Low:5.0°C(changeable,Outdoortemp.
needstobeoverthisvaluetostartthefunction)
Roomtemperaturemin:18.0°C
(changeable,Roomtemp.(extractairtemp.
sensor)needstobeoverthisvaluetostartthe
function)
Fire
function
SetthestatusforFirefunctiontoActiveor
NotActive.
Presetis:NotActive.
Sethowtheunitshouldoperateiftherealarm
functionisactivated,runonHighfan-speedor
Shutoff.Presetis:Shutoff.
Function:Decideshowtheunitshouldoperateat
realarm.
AircontrolSettheAircontrolmodeto:
•Supply.
•Supply&Outdoorcompensation.
Sethowmuchthecontroltemperatureshould
becompensatedwhentheoutdoortemperature
is–20°Cand+15°C(thecompensationwillbe
linearbetweenthesetwopoints).
E.g.At–20:5°C.
E.g.At+15:-2°C.
Controltemp.=18°C.
Outdoortemperature–20°CgivesaControl
temp.of23°C(18+5).
Outdoortemperature+15°CgivesaControl
temp.of16°C(18-2).
•Extract.
Setthepermittedmaximumandminimumsupply
airtemperature.
Fanspeed
control
SettheFanspeedcontrolin%ofmaximum
fanspeed.
Choosebetween:0%to100%.
AllfanspeedsLOW,MEDIUM&HIGHcanbeset
inthisinterval
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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MenuItemSub-menu
Item
Sub-sub-
menuItem
Explanation
In-/OutputsShowtheAnalogueinputs.
AI1:Showtheactualtemperatureofthesupply
air.
AI2:Showtheactualtemperatureoftheextract
air.
AI3appliesonlytoHWunits.
AI3:Showtheactualtemperatureofthereturn
waterinthehotwaterbattery(frostprotection).
AI4Showtheactualoutdoortemperature
Showthestatusandsettingsofthedigitalinputs.
DI1:Fanalarm.Connectedtothethermalcontact
inthefanmotor.Stopsthefananddisconnectthe
electricalheaterwhenthealarmisactivated.
DI2:appliesonlytoELunits.
DI2:Overheatingoftheelectricalheater.
Connectedtothethermalcontactintheheater.
Disconnectstheheaterwhenthealarmis
activated.
DI3:Timer/P .B.StartstheExtendedrunning
whenanexternalcontact,TimerorPushbutton,
closes.OnlywhentheunitisrunninginOff
mode.
DI4:AlarmVVX.Stopthefansandclose
thedampers(accessories)whenthealarmis
activated.
DI5:IsonlyshownwhentheFirefunctionis
activated.
DI5:Firealarm.Connectstoanexternalre
central.Stopstheunitorchangesthefanspeed
toHighifthealarmisactivated.
ShowandsettheAnalogueoutputs.
AO1:Heatingbattery,Electricorhot-water.Show
theoutputsignal,0-10V.Setthestatusto:Auto,
ManualorOff.InManualstatusitispossibleto
settheoutputsignalwithinarangefrom0to10V,
morethan2Vactivatestheelectricalre-heater
(on/offfunction).
AO2isshownonlywhenthecoolingfunction
isactivated.
AO2:Coolingbattery,cold-water.Showtheoutput
signal,0-10V.Setthestatusto:Auto,Manual
orOff.InManualstatusitispossibletosetthe
outputsignalwithinarangefrom0to10V.
AO3:Controlsignal,0-10V,tothesupplyand
extractfan
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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MenuItemSub-menu
Item
Sub-sub-
menuItem
Explanation
Showandsetthedigitaloutputs,output24VAC.
DO1:Dampermotoron/off.Opensthedamper
whentheunitisstarted
DO2:Notinuse
DO3:Notinuse
DO4:ActivatestheVVXrotor.Showsthestatus.
Possibletochangethestatusto:Auto,Onor
Off.DefaultisAuto.
DO5:Alarmoutput.Showthestatus.
VersionShowtheprogramversion
Presentversion1.2-1-00.
Configura-
tion
1.AHU
type(choose
correctAHU
type)
(Enterintothecongurationmenuusingcode
8642)
Fanspeed
control
High:100%(changeable0-100%)
Medium:50%(changeable0-100%)
Low:5%(changeable0-100%)
2.Type
ofheater
(choose
correcttype
ofheater)
3.Control
parameters
P-band:30°C(changeable)
I-Time:100s(changeable)
4.Display
unittype(E
DSPpreset)
5.Modbus
Comm.(Not
Activeor
Active,
PresetisNot
Active)
Modbus:
Active
Modbusaddress:7(changeable)
Speed:9600bps(changeable)
Twostopbits:Yes(changeable)
Parity:No(changeable)
6.Modbus-
/Exoline
Activation
Comm.Code:(enterthecommunicationcode
givenbythesupplieroftheunit)
7.
Address:
PLA:254
ELA:30
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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MenuItemSub-menu
Item
Sub-sub-
menuItem
Explanation
LanguageSetthemenulanguage.
Note:
Ashortcuttothemenulanguageisbypressing
theOKbuttonatthesametimeasthemain
voltageisswitchedon.
Change
codeword
Setanewcodeforservicelevel.
4.4Freecoolingdescription
TheobjectiveoftheFreecoolingfunctionistoprovidecooloutdoorairifavailableduringthenight
timewhentheunitisinOFFpositiontocooldowntheinteriorofthebuilding.Duringthistimetheheat
exchangerotorisstopped.
Note:
ThefollowingisonlyvalidifthefreecoolingfunctionissettoActiveintheprogrammenu.
ThefansarestartedatStartCoolingHourifthefollowingcriteriaaremetsimultaneously:
•alltimechannelsareinOFFpositionandthattheunitgoesbacktonormaloperationthefollowingday
(setoperationtimeduringthefollowing24hours)and
•theaverageoutdoortemperatureishigherthantheoutdoortemperaturelimitand
•theactualoutdoortemperatureislowerthantheoutdoortemperaturesetupperlimitand
•theactualoutdoortemperatureishigherthentheoutdoortemperaturesetlowerlimitand
•theactualoutdoortemperatureislowerthantheactualroomtemperatureand
•theactualroomtemperatureishigherthanthesetroomtemperaturelimit.
ThefansarestoppedattheStopCoolingHourorifthefollowingconditionsaremet:
•theroomtemperatureislowerthanthesetroomtemperaturelimitor
•theoutdoortemperatureexceedsthesetoutdoortemperatureupperlimitor
•theoutdoortemperatureislowerthanthelowestsetoutdoortemperaturelimit.
Theunitchecksthenighttemperature(indoorandoutdoortemperature)during3minutesat12.00
PMwhenthefansarestartedsothatthesensorscanperformatemperaturemeasurement.Ifabove
conditionsaremetthefreecoolingfunctionisstarted,ifnottheunitgoesbacktoOFFposition.
4.5Changingfanspeed
AllthreepossiblefanspeedsettingsLOW,MEDIUMandHIGHcanbesetbetween0-100%ofthemaximum
fanspeed.
TopvexFR03,FR06,FR08,andFR11OperationandMaintenanceInstructions
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4.6Finetuningoffanspeed
Itispossibletomanuallyregulatethesetairowwith2potentiometerssituatedintheelectrical
compartmentgure6.Thisenablesthefanmotorstoberegulatedindividuallydownto75%oftheset
airow,i.e.ifthefanisrunningat100%capacity(10V)it’spossibletoregulateitdownto75%ofthat
particularsetpoint(7,5V),i.e.ifthefanissettorunat5Vcontrolsignalthesameresultwouldbe3,75Vetc.
Note:
Thepotentiometersaremeanttobeusedforcommissioningoftheunittoensureaproperpressure
balancebetweenextractandsupplyinsidetheTopvexunit.
Explanation:
•SF:Supplyairfan
•EF:Extractairfan
Fig.6Potentiometersfornetuningoffanspeeds
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5Maintenance
5.1Important
Danger
MakesurethattheMainssupplytotheunitisdisconnectedbeforeperforminganymaintenanceor
electricalwork!
Warning
•Theinspectiondoorsareheavy!Takecarewhenopeningiftheunitisceilingmountedwiththe
inspectiondoorsfacingdownwards.
•Whenopeningtheinspectiondoors,iffacingdownwards,makesuretoopenthedoorontheexhaust
airside(theunitsectionwheretheoutdoorconnectionsarelocated)rstbeforeopeningtheother
door.ThedoorcanalsobeidentiedthroughaSystemairlogoattachedtoit.
•AlthoughtheMainssupplytotheunithasbeendisconnectedthereisstillriskforinjuryduetorotating
partsthathavenotcometoacompletestandstill.
•Bewareofsharpedgesduringmountingandmaintenance.Useprotectiveclothing.
5.2MaintenanceIntervals
Thetablebelowshowsrecommendedmaintenanceintervalsfortheunitandtheinstallation.To
ensurealongoperationlifetimefortheunititisimportanttoperformmaintenanceaccordingtobelow
recommendationsandthattheyareperformedaccordingtotheoperationandmaintenanceinstructions.A
thoroughandrecurrentmaintenanceisamustforavalidguarantee.
Typeof
maintenance
Every3monthsEvery6monthsEvery9
months
OnceayearWhen
necessary
Changing
lters
(X)1X(X)1(X)1
Cleaningthe
heatexchanger
X
Cleaningthe
fans
X
Cleaning
extractlouvres
andsupply
diffusers
X
Cleaningthe
outdoorair
intake
X
Cleaningthe
ductsystem
X2
1.Dependingontheairpollutionattheinstallationsite
2.Orinaccordancewithlocalrulesandregulations
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5.3MaintenanceInstructions
5.3.1ChangingSupply/Extractairlter
Indicatedas“ltertobechanged”inthecontrolpanel.
Thebagltercannotbecleanedandmustbechangedwhennecessary.Newlterscanbeorderedfrom
Systemair.Operationtimebetweenlterchangesmustberesetafterlterchange(seetable3Filter
alarm).T ochangethealarmactivatingtimeseesection4.3,Filteralarm.
Theltersaretakenoutafterlooseningascrewattachedtothelterguiderail(gure7)
Fig.7Changinglters
5.3.2Checkingtheheatexchanger
Afteralongtimeofusedustmaybuildupintheexchanger(pos.5,gure3)andblocktheairow.Itis
importanttocleantheexchangerregularlytomaintainhighefciency.TheheatexchangerintheTopvex
FRcanbetakenoutoftheunit.Seetable2foraweightoverview.Washinhotsoapywateroruse
pressureair.Donotusedetergentcontainingammonia.
Table2:Weightofheatexchangerblock
ModelWeightofheatexchangerblock(kg)
FR0330
FR0640
FR0852
FR1166
Note:
Makesurethattherotormotorisnotexposedtomoisture.
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5.3.2.1Dismountingtheheatexchangerblockonceilingmountedunits
1
Thereare4screws(2oneachside)holdingthe
heatexchangerblock(ModelsFR08andFR11
have8screws,4oneachside).Whenremoving
theheatexchangerstartwithcheckingthatthe
screwmarked“A”istightenedproperly.Remove
thescrewmarked“B”completelyasshowninthe
gureafterwhichthescrewmarked“A”isloosened
carefully,justenoughtoallowtheexchangerframe
toslideinthetracks.
2
Slideouttheexchangerblockuntiltheendofthe
tracks.
Warning
Theheatexchangerblockisheavy.Use
propersupportdevicewhentakingouttheheat
exchangerblockformaintenance!
3
Afternishedcleaning/maintenance,pushbackthe
heatexchangerblockandfastenallscrewstightly.
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5.3.2.2Dismountingtheheatexchangerblockonoormountedunits
1
Loosenallscrewscompletelyholdingtheheat
exchangerblock.
2
Removetheheatexchangerblockcompletelyby
liftingitstraightup.
Caution
Theexchangerblockisheavy,makesureto
useproperliftingdeviceorsufcientnumberof
personstolifttheheatexchangeroutoftheunit
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