Ensy AHU-400 BV User manual

User manual and
Installation Guide
AHU-400 BV
AHU-400 BH

393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage1
Usermanual.Page1to13
(Picturesonpages1‐5showsAHU‐400BV)
Toopenthefronthatchyouwillfindakeyfor
thequarterturnlatchesinthefoldertogether
withthefollowingdocuments.Keepthiskey
inaplacesoitisoutofreachforchildren.
Toopenthelocks,turnthe
keytowardthecenterofthe
unit.
Leftlatch Rightlatch

Toclose,afterputtingthehatchbackonplace,turnthelatchestheoppositeway.Youmayusesome
pressuretowardsthehatchtocloseit.
Becarefulthatthedoorcan"bestuck"inthesealingonthehatch.
Foreasierlooseningofthehatch,releaseitfirstinonecorneratthetop.

Tooperatethisproductpeopleshouldhavenecessaryskills,orunderthesupervisionof
aqualifiedperson.
Childrenshouldbetoldtonotplaywiththeappliance.

Whenyouliftoffthefronthatchfromthe
device,makesurethespiralcablethat
connectsthedeviceandthefronthatchisnot
overstretchingforalongperiod.Thiscan
damagethecable

Duringcommisioningoftheappliance,
wheninstalled,thespiralcablehasto
connectedinordertohaveaccessthe
controlpanelinfrontofthehatch.

Whenservicingandcleaning,this
spiralcableshouldbedisconnected.
Makesurethatthespiralcableisdisconnected
andconnectedwithouttheuseofforce.Thisto
preventcontactsoncabletobedamaged.

Ifthespiralcableisoutofposition,thenyouwillgetanalarmcalled"Lowvoltage".Togetthesignal
backintothedisplayyoumustunplugandplugbackinbothhatchandventilationunit.Note!Ifthe
spiralcableisbroken,youhavetoorderneworiginalcablefromsupplier.Standardcablefromstore
wouldnotwork.

Newspiralcablehasart.no:330541‐2fromsupplier.

393805‐2Rev0:05.05.2017.KJK
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Beforeanyaccessintotheelectrical
connectionsboxes,powermustbe
disconnectedbypullingouttheplug
fromthesocket.

Itisonlyallowedfor
authorizedpersonsto
enterintotheelectrical
connectionboxes.


Ifanyelectricalcomponentsare
damaged,theymustbereplacedbythe
manufacturer,dealeroraqualified
personinordertoavoiddangerous
situations..




Adjustmentoftheunit.
Ahumiditysensoris,fromfactory,mountedinsidetheunit.Itis
setto“0”thatmeansitissettonotactive.

Afterstartup,wheretheunitisplacedintoanewbuildingwithhighhumidity,
youcanletthishumiditysensorbeturnedoffforaperiodtoavoidthefullspeed
ofthefanatnight.Togetthehumiditysensortooperateasintended,youneed
atonetimetoputitactive.Thanyouneedtosettheswitchinposition"1".

Iftheventilationunitisplacedinahousewithouthighhumidity,youshould
switchtoposition"1"afteryouputtingventilationunitintooperation.

Thisswitchwillalsoaffectanyextraexternalhumiditysensorthatis
pluggedintothedevice.

Adjustingthehumiditysensor.

Ifitisnecessarytoadjustthesensitivityofthehumiditysensorthenyou
must,onoldermodels,removethecover,whichisover
thecontrolboardwherethisadjustmentislocated.

Unplugthesupplybeforeremovingthe
cover.

Onnewermodels,youjustcanremovetheblackplug
andyouthencanseetheadjustingknobandtheRH%
scale.
PicturesshowsAHU‐400‐BV

393805‐2Rev0:05.05.2017.KJK
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
Thesensorissetto80%RHfromfactory.
Ifyoudoadjustments,thisonlyaffectthesensor
integatedinsidetheunit.
Thesensitivityfortheintegratedsensoryoucanadjusted
from50%(low)to90%(high)inaccordancetowhatare
theneeds.Thearrowpointsthevaluechosen.
Ifyouhaveasecondexternalsensorthatmeansyouneed
toadjustthatonefromitssettings.
Replacethecoverand/orplugafterfinishadjusting.

Replacingthefilter.
Thefiltersshouldbe
replacedevery6.9.
or12.months.
Shouldbeextracted
withoutuseofany
tools..
Remembertoenter
thecontrolpanel
menu(4.3Filter)
andpressFilterOK
afterthefiltershas
beenreplaced.




Toguaranteeoptimalpropertiesoftheventilationunit,usetheoriginalfiltersfrom
EnSy.Theuseofspuriousfilterswilllimitthewarrantyontheproduct.

Ensyartnumberforfiltersetis:
011460862‐2
SETFILTREENSYAHU350BV/BH+400_BL/BR_BV/BH.F7:165x370x94

393805‐2Rev0:05.05.2017.KJK
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Cleaningthefans.
AHU‐400BV
Aqualifiedpersonmustdothis.
Disconnectthe3‐poleand5‐pole
plugs.
Beforeyoucanpulloutthefans,
youhavetoremovethebrackets
thatholdsthefansincorrect
position.
Importantthatthese
bracketsisplaced
backaftercleaning.
Cleanwithmildsoapandwater.

AHU‐400BH
Aqualifiedpersonmustdothis.
Disconnectthe3‐poleand5‐
poleplugs.
Thesupplyairfancanbepulled
outoftheventilationunit
withouttheneedforanytools.
Beforeyoucanpulloutthe
extraxtairfan,youhaveto
removethebracketthatholds
thefanincorrectposition.
Importantthatthis
bracketisplaced
backaftercleaning
Cleanwithmildsoapandwater


393805‐2Rev0:05.05.2017.KJK
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Maintenanceandcleaningofrotaryheatexchanger
Thismustbedonebyaqualified
person.
Disconnectthe3‐poleplug.
Canbepulledoutofthe
ventilationunitwithouttheneed
foranytools.
Rotorexchangercaneasilybe
removedforcleaningbydissolving
the14screwsthatholdittogether.

Cleanpartswithmildsoapand
water.
Donotexposetherotor
motororconnectorfor
moisture.

Theexchangeryoualsocanclean
withmildsoapandwater.Donot
useammonia‐containingdetergent,
asthiswillpreyonanddiscolor
aluminuminrotaryheatexchanger.
Flushedwithhandshowerandblow
gentlycleanwithcompressedair.
Ensurethatthescrews
aretightenedsufficiently
sothattheydonotcome
looseduringoperation.

Preferablyuseascrewdriverto
tightthescrews.Ifuseofelectrical
screwdriver,makesurethatyou
uselowtorquetoprevent
destroyingthespringsinthesheet
metalparts.

Tomakesurethatthedrivebeltcan
adjustitselfintocorrectposition
youmustrotatetheexchanger
somefewturns.

Theninsertbackintotheventilationunit.Besurethatrotorexchangerisproperlyinsertedinallthe
guidesinsidetheunit.Ifnot,thiscanleadtovibrationinthesystemandinternalairleakintheunit.

393805‐2Rev0:05.05.2017.KJK
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Mainmenu




1.ControlButtonindicatorforfan.
2.ControlButtonindicatorsetpoint.
3.ControlButtonindicatorinformation.
4.ControlButtonindicatorsettings.
Overviewofcontrolpanel
Themainscreenconsistsof,fromtop,left:
TimeIndication,hour,minute

Timer,Weeklyschedule(ifprogrammed)

Reheatingcoil(ifconnected)

Temperaturereadings,Outdoor/Indoor

Statusairflow–fanspeedsetting
OFFMINNORMorMAX

Temperaturesetpoint,15‐21°C

Reheatingcoil–(hererefersactiveelement)

RotaryexchangerIndicator‐(hererefers
activerotarywheel)


Indicatorsinthemenuscreen:

"Sun"indicatesthattherotorhas
stopped,theairhandlingunitisin
thesummeroperationmode.

"Snowflake"lowtemperature
indicatesthattheairhandlingunit
isindefrostingmode.

"Steamingpot"andblinkingfan
bladesindicatesthatthekitchen
exhaustisactivated.


"Timer"andthecountdownofthe
fansymbolindicatethattheforced
ventilationisenabled.
From10upto240minutes

"Away"indicateswhenthefeature
isenabled,thisfeaturewilloverride
timer.


"Clockoverthefansymbol"
indicatesthatthetimerisactivated.



Co2overthefansymbol"indicates
thatthecarbonsensorisactivated.


"Exclamationpoint"indicatesthat
moisturerecordedoverthesensor
ishigherthanthesetvalue.
Mayalsoindicatethatthemotion
sensorisactivatedifconnectedon
D2signaloutput.

Thissymbolindicatesthatthe
rotaryheatexchangerisactivated
andwillberotated
ControlButton1.2.3. 4.

393805‐2Rev0:05.05.2017.KJK
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1.Fanspeed

Ventilationunithasthreeoptionsforchoiceof
airflow.


Min,NormalandMax.
Forprogrammingofvalueswithineachstep,
see4.5.1.3Usingthecontrolbutton1,and‐/
+buttonscanchangebetweenthepre‐
programmedselections.


1.1Fanboost
Forcedventilation,fanspeedincreasestomax
speed.(Meanstothespeedthatissetin
menu4.5.1.3.)Thefunctionisforuseifhigh
humidityinbathroomsandlaundryroom.

Forcedventilationcanbeactivatedwith
button
then 
Intervaladjustablefrom10‐240minwith+
and‐

Thispictureshows10minforcingtime,but
notactivated.
Toactivatethefanboostuse
controlbutton4.

YoucanseethatthefanarerunningwithMax
speedandtheclockwillstartcountdown.
Youcaneasydeactivatethefanboostagain
beforethecountdownautomaticallystopsit.
Firstcontrolbuttom1 andthen4. 

Thisfeaturecanalsobeoperatedwithan
externalpulseswitch.Theswitchisplacedin
thebathroomoradjacentrooms.Connected
tocontactD1intopoftheventilationunit.
(Lookatpage23inthismanual.)
IfthisoptionviaD1isintendedforuseagainst
woodstoveorfireplacethenitis
recommendedthatMaxspeedunderFan
controlinmenu4.5.1.3.issettoSupply100%
andadjustExtracttobe80to85%.(Lookat
page10inthismanual)

2.Temperature

Choosefrompre‐programmedtemperature
settingssetpointbetween15‐21°C.Setting
ischangedbyoperatingtheswitchbuttons
below‐/+symbols.





HeatingelementcanherebesetONorOFF
byoperatingtheswitchbutton4inthis
screen,butonlyifheaterisconnected.

(Toseeifheatingcoilisconnectedor
disconnected,see4.5.1.1Heater)
Indicatorforactivatedheatingcoil.
Smallpictureshownotactivated.

393805‐2Rev0:05.05.2017.KJK
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3.Information.

3.Information/3.1.Alarms
Whenalarmyoucanfindasourceoferror
here,aswellasinfoonhowthealarmisreset.
(Seepages28and29inthismanual)

3.Information/3.2Programversion

Informationaboutthesoftware
version.Thisinformationmustbeprovidedto
servicepersonnelatthefailureoftheunit.


WhichdisplayisdefinedasDisplay1or
Display2appearshereiftheplanthas
mountedtwodisplays.
See4.5.1.10selectionofthedisplays.





3.Information/3.3.Generalinfo

Hereyoucanseedefrostmodethathas
beenchosen.

(See4.5.1.9ifyouwanttochangemode.)
4.Preferences

Tonavigatewithinthevarioussub‐menus
whenusingthecontrolbuttonsbelowtheup/
downcursorkeythatdisplaysonthedisplay.

4.Preferences/4.1Time/date

SettingmenuforTime/date.Thissettingis
importantsincetheinformationformingthe
basisfortheweeklyschedulefunctionifthisis
tobeactivated.Alsoforthefilteralarm
functionitisneeded.


393805‐2Rev0:05.05.2017.KJK
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4.Preferences/4.2Weeklyschedule

ProgrammingoftheWeeklyschedule,fan
speedandtemperaturesetpoint.Hereitcan
beprogrammedfortwoperiodseachday.Ex.
day‐night.




Everydaymustbeprogrammedindividually.
Monday‐aperiodoftime,selectthestart
time.Toactivatetheperiod,X‐overperiod
numberisremoved,usethe‐/+keys.

Useentertomovebetweenthedifferent
fields.


Chooseairflow(fanspeed)Speeddialing‐
MINwhenonefanbladeontheindicatoris
black.NORM=twoblackfanbladesonthe
indicator.MAXspeed=threeblackfanblades
ontheindicator.

Selectthedesiredsupplyairtemperatureyou
wantduringtheperiod.Settingsbetween15‐
21°C.

Ifweeklyschedulelookssomethinglike
thiswithoutanyreasonthenyoumust
punchinallthedataagain.
Itdonothelptoupdatesoftware.

4.Preferences/4.3Filter

Settingthetimeintervalforfilterchange,
currentchoicesare6,9or12months.Make
yourchoicesbyusingthecursorkeys+/‐.

Alarmresetelapsedperiodbypressingthe
menubutton4,under"FilterOK"
4.Preferences/4.4AdjustScreen

Adjustingthecontrastandcoloronthe
display.


Youcanalsoadjusthowlongitshouldbelight
inthedisplayaftertheoperation.

4.Preferences/4.5Setup

Toproceed,usePINcode1000


Press+oncetillitshows1000in
display.Thenpress4timeson

Thenpressbutton3forOK..
StarttimeStoptimeFanspeed
Activationoftheperiod.Herenotactive

393805‐2Rev0:05.05.2017.KJK
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4.5.1Setup


4.5.1.1Heater

Turningon/offthereheatingcoil,usethe
minusorplusbuttontochangesettings.


4.5.1.2Coolingrecovery

Activationofthecoolingrecovery:


Itispre‐programmedtwooptionsforuse
whentheoutsidetemperatureishigherthan
theindoortemperature,heatrecoverysystem
willactivatethefunctionstartandsupplyair
willbecooledbyexhaustair.Engagement
whentheoutdoortemperatureis2°Cor3°C
higherthanroomtemperature.Usebutton4
tochangesettingforOff.Press+toactivate
(On).Usebutton4tochangesettingfor2°C.
Press+tochangetoto3°C,ifwanted.



4.5.1.3Fancontrol

FactorysettingsforAHU‐400BVandBHyou
canseeinnextpicture.

Theinstallercanadjustthesesettingssothat
itisadequatelybalancedventilation.
4.5.1.4Co2control

IftheunitshallbeconnectedCO²controlthen
connectittoC0²connectorontopoftheunit.
(Seepage23inthismanual).

Menuforenabling/disablingofCO²control.

ScrolltoOffandpress+toactivate.On

Hereyoupreprogrammedwantedppmvalue
andtheboostspeedforthefans.
Note:Togetbalancedventilationisa
prerequisitethatSupplyandExtractairfan
hasthesamevalueastheMAXvalueunder
4.5.1.3




4.5.1.5Cookerhood

Menuforprogrammingoffanspeedsby
activationofthekitchenhood.KVconnector
onthetopoftheunit(seepage23inthis
manual)shouldalwaysgetsignalfromthe
kitchenhoodwhenthisisactivated.Thisto
preventrotoralarm.

393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage11

SupplyandExtractairshouldhavethesame
valueastheMAXvalueunder4.5.1.3(Setto
100%fromfactory.)
Evenifitisinstalledan"active"kitchen
ventilatorwithpipingnotconnectedtowards
theunit,theKVplugmustgetthesignalto
seethatkitchenventilatorisactivated.This
canbedonebyusingaapressureswitchin
theexhausttubefromtheventilator.Then
Extractsetdowntoaround50%orlessto
compensatefortheextractairinthehood.
Note!IfKVsignalplugisnotinusefor
cookerhoodthenyoucanusethesignaltoget
moresupplyairwhentofireupafireplace.
Thenadjustsothatsupplyairdeliversmore
airthanextractairfan.Inthiscaseyoumust
useaswitchandnotimpulseswitch.
4.5.1.6Externalarm

Iftheunithasbeenconnectedtoanexternal
humiditysensorormotionsensor.UsetheD2
connectorontopoftheunit.(Seepage23in
thismanual).Note!Inorderforthisfeatureto
work,youneedtheone‐poleswitchmarked
RH%ON/OFFinsidetheunittobesetin
position1.(Seepage2ofthismanualforthe
locationofthisswitch).
SupplyandExtractairshouldhavethesame
valueastheMAXvalueunder4.5.1.3(Setto
100%fromfactory.)

4.5.1.7Absent

Menuforsettingthedesiredvaluesby
activatingaway/homefunction.
UsetheD3connectorontopoftheunit.(See
page23inthismanual)Functionisoperated
viaanexternalswitch.

Setvalueofthedesiredtemperaturewill
showinthedisplayafteractivatingthe
function.

4.5.1.8Calibration

Menureadingofembeddedtemperature
sensors.


Thesetemperaturesensorsare
deliveredcalibratedfromthe
manufacturerandshouldnotbeattempted
changeinhere.

The«Outsideair»sensornormally
shows3‐6°Chightertemperaature
thenthereeloutsidetemperature.Thisisdue
toheatingoftheairintheductnetworkfrom
theintakegrilletotheintakeoftheunit
wherethesensorareplaced


393805‐2Rev0:05.05.2017.KJK
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4.5.1.9Defrost

Menuforhowtochangedefrostmodeif
temperatureislowandhumidityisheight.



Fromthestartupmenuyoucanseewhich
defrostmodetheunitissetin.


TheunitissetinmodeOFFfromfactory.
Ifitisneededtochangethedefrost
modetoanothermodethenpress
button4andscrolldowntoConfiguration
withbutton3.


Pressenterbuttonandfollowprocedure
asinMenu4.5Setuptocontinue.

Pressenterbutton

DefrostmodeOFFfromfactory.


Modus1:atlowhumidity.
Defrostingfunctionstartat‐20°C.


Modus2:atnormalhumidity.
Defrostingfunctionstartat‐15°C.



Modus3:athighhumidity.
Defrostingfunctionstartat‐10°C.



Thefunctionwhendefrostingstartsisthat
eachhourthesupplyairfanstopsfor6
minutes.TheheaterEVturnsoff.Extractair
fanreducesspeedto30%andtherotary
exchangerwillrunasnormal.

Toavoidthattherotaryexchangerwillstop
whenthecyclegoesbacktonormalfunction,
thesupplyairfanwillstartupthelastminute
ofthedefrostingmodecycle.

(Supplyairfanreactsdelayedrelativetothe
controlsignalsandrotaryexchangersothat
theheaterwillnotengage untilthespeedof
thesupplyairfanhaspassed250r/min,in
normaloperation).

393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage13
4.5.1.10Displaynumber

Iftwocontrolpanelsshouldbeused,then
fromthismenuithastobespecifiedthatone
ofthecontrolpanelsis«Display1»andthe
otheroneis«Display2».Thistoavoiddelayin
thesignalsbetweenthecontrolpanelsand
maincontrolboardinsidetheunit.
Itdoesnotmatterwhichofthecontrolpanels
thatarecalledDisplay1orDisplay2.







393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage14
Mountinginstructions.Page14to27.
Tableofcontents:
1.General

2.Mountingoftheunit
2.1Bracketsandgasketstoavoidvibration
2.2Stopperbrackets
2.3Mountingofcookerhood
2.4Ductcover
2.5Dimensionsandtechnicaldata

3.Connections
3.1Electricalconnections
3.2Ductconnections

4.Settingtheairflow

5.Alarms

1.General
Thisguideismadetoprovideinstallationanduserinstructionsregardingthecorrectinstallationof
AHU400‐BVandBH.
AHU‐400BVandBHisdesignedforheatrecoverywithairvolumesofupto400m³/h.Theenergy
fromtheexhaustairistransferredtosupplyairthroughtherotaryheatexchangerwheretheair
streamspasseachotherwithoutmakingcontact.
Theunithasabuiltin‐heaterforsupplementaryheatingofsupplyair.Humiditysensorforforced
ventilationisintegratedintoventilationunit.Controlpanelisintegratedintothefronthatch.Option
forasecondcontrolpaneltobeconnectedismadeoutsidetheunit.
Theunitcanalsoconnectadditionalequipmentcookerhoodoverthestove,pulseswitchfor
controllingtheforcedventilation,forexample,wetroomsorbathrooms,sensorforcarbon
managementandswitchmanagementaway/homefunction.Controloftheseoptionsareintegrated
intoAHU‐400BVandBH.
AHU400‐BVandBHissuppliedinpaintedfinish,testedandreadyforoperation.Installation,
commissioningandtuningmustbeperformedbyauthorizedpersonnel.
2.Mounting
Togetherwiththeunitisdeliveredthefollowingequipment:
1.Suspensionbracketandstoppers
2.WallBracketwithvibrationdampeninggasket
3.Self‐adhesivevibrationdamping
4.Accessoriesbagcontainingthenecessaryscrews
5.5pcs.plugsforconnectingadditionalequipment.
6.Keyforopeningthefronthatch.

393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage15
First,selecthowtheunitshouldbemountedsothatthepipingsystemshouldbeaseasyaspossible.












(SketchovershowAHU‐400BV)












(SketchovershowAHU‐400BH)
Cooker
hood
Exhaust
air
Extractair
fromroom
Supplyairto
room
Freshair
fromoutside
Cooker
hood
Freshairfrom
outside
Supplyair
toroom
Extractair
from room
Exhaust
air

393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage16
Theunitcanalsobeplacedonthefloor.Itisthenimportantthatthereareplacedatleast50mm
insulationundertheunittopreventvibrationtothebuilding.Ifventilationunitwillbeplacedasthe
sketchshowsitmustnotbecoveredsothatserviceisprevented.
Ifplacedattheatticmakesurethatthere
areatleast500mmclearanceoverthefront
hatchsotherewillberoomforservice.



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2.1Bracketsandvibrationgasket
Suspensionbracketscrewedontopofthe
unitasshown.



Use8pcsM5x16mm,suppliedwiththeunit
(SketchovershowAHU‐400BV)

Makesurethattheedgeprotectiongasketisplacedonthewallbracket.







393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage17
Togettheunitinrightpositionusethe
followingbracketsandscrews.Inorderto
reliefthehangerbracketonthetopitis
importanthoweveralsotomountthebracket
tobeundertheunit.Ensurethatthescrews
hitthebeamsbehindthewalliftheunitisto
behungonalightwall.
Use6pcswoodscrews5x40mm,supplied
withtheunit,foreachbracketMonter
veggfestetmedvibrasjonspakning.Påseat
vibrasjonspakningenerintakt.

Mountthewallbracketwithvibrationgasket.
Besurethatthevibrationgasketisintact
Gluevibrationgaskettothebackoftheunit,seeillustration.Approx.60mmfromthebottomofthe
unit.





2.2Stopperbrackets
Topreventtheunittobeliftedoutofthebracketsshouldbeinstalledtwostoppers.Usetwopcsof
woodscrews5x40mm,suppliedwiththeunit,foreachbracket.Inordernottotransmitvibration,itis
gluedvibrationmaterialonthesebrackets







393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage18
2.3Mountingofcookerhood
Ifkitchenexhausthoodistobeusedtogetherwiththeunit
Ifkitchenexhausthoodistobeconnected
intothetopoftheunit,youmustremovethe
endcapinthetopthatismarked“COOKER
HOOD”





(SketchshowsAHU‐400BV)









(SketchshowsAHU‐400BH)






393805‐2Rev0:05.05.2017.KJK
Wereservetherighttochangetechnicaldatawithoutnotice.http://www.ensy.noPage19
2.4Ductcover
Ifyouwanttouseaductcovertohidethepipingsyouwillneedthedistance296mmfromtheroof
anddowntothetopofunit.
Theductcoverhastobeorderedseparatelyfromsupplier.(Art:0100307‐2)
Theinstructionhowtomountthisductcoveryouwillfindtogetherwiththeductcover.







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