Carrier HUMXXSTM3034 User manual

Model HUMXXSTM3034
Residential Steam Humidifier
Owner's Manual
Includes Safety & Operating Instructions
iREADAND SAVETHESEiNSTRUCTiONS

Safety...................................................... 2
Introduction................................................. 4
Principlesof Operation........................................ 4
Sequenceof Operation........................................ 5
InstallationOptionsandEffectofWaterCharacteristics.............. 6
OperatingModes............................................. 7
DisplayPanel................................................ 8
HumidifierControl& OperatingInstructions........................ g
ChecktheHumidifierOperation................................ 10
AdditionalInformation........................................ 10
Maintenance............................................... 10
CAUTION
,&WARNING
-2- -3-

Thankyoufor yourrecentsteamhumidifierpurchase.Weappreciate
yourbusinessandarepleasedtoaddyournameto ourgrowinglist of
customers.Youhaveinvestedin thehighestqualityequipmentavailable.
Yourhumidifierwill requireperiodicmaintenanceto assurecontinued
consistentperformance.Seepage10.
Pleasetakea few minutesandreadthis booklet.Thiswill familiarize
youwith thebenefitsyouwill receivefromthe humidifierandhelpyou
understandtheroutinemaintenancethatwill berequired.
ReplacementSteam Canistersare available fromyourinstalling
contractor.Useonly genuinereplacementpart number8045HUM.
TheSteamHumidifierdelivershumidityin theformof steamto the
conditionedspaceviathe HVACsystemduct.Thehumidifiergenerates
steambyenergizingtwo electrodesthat extendintoacanisterof water.
Currentflowing betweentheelectrodescausesthewater to boil,creating
steam.Water is introducedto the humidifierthrougha fill valveto a fill
cuplocatedinthetop ofthecabinet.Thefill cupservesasanoverflow
reservoirandprovidesanair gapbetweenthehumidifierandwater
source.Thesteamcanisterisfilled fromthe bottom.Thecanisteris seated
in a draincupassemblywhich includesa drainvalve.Thedrainandfill
valvesworktogetherto maintainwater levelinthe canistertodeliverthe
ratedsteamcapacitybasedon theelectricalconductivityofthewater and
totemperdrainwater.SeeFigure1 for representationoffill anddrain
systemandcanister.
Steamisdeliveredintothe airstreamthroughadispersiontubemounted
in the HVACsystemductwork.Openingsin thedispersiontubearefitted
with "tubelets"whichextendintothe centerofthetube.Thedesignof the
dispersiontubeandtubeletsdistributesteamovera wideareain the duct
anddirectanycondensedmoisturebackintothesteamhose.
!! ¸i!i!i:!i:il: ! .....
Steam
Outlet
FlowControl
Orifice
High Water
_ LevelSensor
Electrodes
Canister
Inlet
FillValve DrainValve
Supply
Water
Drain
DrainCup
gO1522
Whenthe HumidifierControldetectshumiditybelowtheset point,
andprovidedthe humidifieristurnedonandtheindoorunitbloweris
operating,theinternalcontrollerinthehumidifierenergizestheelectrodes
andmeasuresthecurrentflowing throughthewater betweenthem.The
controlleradjustswater levelinthe canisterviaa fill valveanda drain
valveto maintaina constantcurrent.Theoperatingwater levelinthe
canisterdependsonthe mineralcontentof thewater whichdetermines
conductivity.
A relayis providedwith the humidifierthat will allow thecontrolto turn
onthe indoorunitblowerwhena callis madefor humidity.

YourSteamHumidifiercanbeinstalledtooperateon120volts,208volts
or240voltsusing11.5or16.0amps.Thehigherthevoltageandamperage
thehigherthepotentialoutput.
!!!ii!ii!ii!ii!i!!iiiiiiiii i!aiiii i ii iiii!!i!i!! i!!,!ili!,
120V 11.5
11.5 208V 20.5
240V 23.3
120V 16.0
16.0 208V 30.0
240V 34.6
it may take several daysfor the humidifiertoreach rated capacity
depending on the input voltageand the electrical conductivityof
thewater, 120volt systemstake longerto reachratedcapacitythan240
volt systems.Thehumidifiershouldalwaysbe plumbedto coldwater but
thewater canbesoftenedor unsoftened."Hard"water,which hasa high
mineralcontent,andsoftenedwater generallyhashigherconductivitythan
naturallysoftwater.Systemsplumbedto higherconductivitywaterwill
reachcapacitysoonerthansystemsplumbedto lowconductivitywater.As
thehumidifieroperates,mineralsbuild upinthe canister,which increases
theconductivityofthe water.With a new canister,allowingthe humidifier
to operatecontinuously(alongwith theindoorunitblower)will allow it to
reachratedcapacityin theshortestamountoftime.
Whenthe humidifierispoweredandturnedon,the"On/Off" light is
illuminatedgreen.
Whenthecanisterisbeingfilled or replenishedwith water,the"Fill" light
illuminatesgreen.
Whenthecanisterisbeingdrained,the "Drain" lightilluminatesgreen.
Duringinitialstart upwith a newcanister,the humidifiermayrunthrough
a seriesoffill/drain cyclesuntiltheconductivityof thewater isin a range
thatallowsnormaloperation.Duringthistime,the"Steam"lightilluminates
green.If thehumidifiercannotproducesteamat theratedlevelaftertrying
for 168hours,the"Steam"lightilluminatesyellow.Thehumidifiercontinues
tooperateinthis stateuntilthe ratedoutputis reached.
Theconductivityofnaturallysoftwater, hardwater, andsoftenedwater
changesasthewater heatsup,butthe internalcontrolleradjuststhe
water levelto maintaina nominalcurrentbetweentheelectrodes.Over
the lifeof thecanister,mineralsthat builduponthe electrodeswill reduce
theireffectivesurfaceareaandaffecttheresistancebetweenthem.The
operatingwater levelwill increasewith useuntilit reachesthe highwater
levelprobe.Atthat point,the "Service"lightwill flashredindicatingthat
thecanisterneedsto be replaced.Thehumidifierwill continueto operate
butwith reducedoutput.
Whenthe humidifierbeginsa draincycle,thefill valveopensto introduce
coldwater intothecanister.Thisis doneto preventhotwater from
enteringthedrain.Thedrainvalveremainsopenforfourminutesto allow
all water to drainfromthe canister.
Anytime poweris disconnectedor humidifieristurnedoff,the internal
timerfor start-upanddraincyclesis reset.
Ifthe humidifierhasoperated168hourswithout a draincycle,the drain
valvewill openanddrainthe canister.Normaloperationwill continue.
Ifthehumidifierisoperatinganda powerfailure occurs,oncepower
is restored,the"On/Off" lightwill flash greenfor oneminute,thenthe
humidifierwill turnon.
Ifthehumidifierdoesnotreceivea call to operatein72 hours,the
humidifiercontrollerdrainsthecanister.Thedrainlightwill remainonuntil
thereisa humiditycallor 24hourshaselapsed.Thehumidifierwill resume
normaloperationwhena callfor humidityismade.

OnlOff
Fill
Steam
Drain
Service
off
Solid
Green
Flashing
Green
Solid
Green
Flashing
Green
Solid Red
Solid
Green
Solid
Yellow
Flashing
Green
Humidifieristurnedoff ornotreceivingpower.
Humidifieristurnedon.
Humidifieris preparingto turn on.Occursif poweris
disconnected,thenrestoredwith switch ON.Flashesfor
oneminute.
NormalOperation.Fillvalveis energizedallowingwater
toflow into canistervia fill cup.(Doesnotilluminate when
temperingwaterduringdraincycle.)
FillandDrainValvesarepulsingtodislodgemineralbuild-up
in canister.Flashes10timesinfourseconds.
FaultMode.Indicatescanisterneedswater butcannotfill.
Humidifiershutsdown.(Occursif highwaterprobedoesnot
detectwater afterfill valveis energizedfor 40minutes.)
NormalOperation.Humidistatiscallingfor steamand
humidifieris operating.
Humidifieris operatingbutisnotdeliveringsteamat rated
capacity.Occursif humidifierhasoperatedfor 168hours
at lessthanratedcapacitydueto lowwater conductivity.
Lightwill turngreenoncewater conductivityincreasesand
humidifierisdeliveringratedcapacity.
Humidifieris preparingto drain.(Fillvalveis open
temperingwater in canister.)Occurswhenhumidifier
isturnedoff,at endofseasondrain (72hourswith no
operation)andduringforceddraindown(168hoursof
operationwith nodrainactivity.)
FillandDrainValvesarepulsingtodislodgemineralbuild-up
in canister.Flashes10timesinfourseconds.
Drainvalveis energizedand open,drainingcanister.Valve
remainsenergizedfor fourminutes.
Solid
Green
Flashing
Red
Solid Red
Indicatesendof seasonshut-down.Occursif humidifier
doesnotreceivecall for humidityin 72 hours.Lightremains
onfor 24hours.
Canisterhasreachedthe endof its lifeand needsto be
replaced.Occursafter humidifierhasoperatedfor at least
168hoursandfor anadditional24hoursat acurrentlevel
below76% ofthemaximumoperatingcurrent.Humidifier
continuesto operate,butat reducedcapacity.
Operationalproblemwith humidifier.Humidifiershuts
down.Occurswhenunitdetectsover-currentwhichcanbe
causedbyfailure todrain or othersystemfailures. Callyour
heatingandairconditioningdealerfor service.
Thecontrolprovidedwith yourhumidifierismountedeitherinyourreturn
air ductoron awall in thelivingspace.Thecontrolhasa setof contacts
whichclosewhentheRHis belowtheset point.Thatsignaltells the
humidifierto energizethe electrodesin thecanisterto generatesteam,
providedthe indoorunitblowerison.If thebloweractivationrelayis
installed,a callforhumiditywill turn onthe indoorunitblower.
It isimportantto anticipatechangesin outdoortemperatureandadjust
thesettingaccordinglyto avoidexcessivecondensationwhenoutdoor
temperatureis low. Forexample,with anoutdoortemperatureof 20°Fthe
correctsettingwill be35%.If thetemperatureisexpectedto fall to O°F
that evening,thenmerelyreducethesettingto 25%severalhourspriorto
thetemperaturechange.
SeeTable2 for therecommendedsettings.Thesesettings,which are
basedonyearsof research,representa compromisebetweenhumidity
levelsthat wouldbemostdesirablefor comfortandhumiditylevelsthat
aresuitablefor protectionofyourhomeandtoavoidcondensationon
yourwindows. Forexample,a wintertimeindoorhumidityof 50%maybe
consideredidealfor comfort,butunfortunately,it probablywould result
in condensation,whichcancausedamageto yourhome.Observingthe
recommendedhumiditylevelsonyourHumidifierControlisan important
safeguard.Condensationofwater onthe insidesurfaceof windowsin
theformof foggingorfrost isusuallyanindicationoftoo muchhumidity.
Thissamecondensationcanoccurin otherareasin yourhome,possibly
resultingin damage.
+40°F
+30°F
+20°F
+IO°F
OOF
-IOOF
-20OF
45%
40%
35%
30%
25%
20%
15%

TurnthecontrolknobtothemaximumRHsetting.Makesurethatthe
watersaddlevalveisopenandthatthehumidifierison.Theindoorunit
blowermustberunningforthehumidifiertofunction.Oncehumidifier
operationisverified,reducetheHumidifierControlsettingtothe
recommendedinsidehumidity,dependingontheoutsidetemperature.
If usingthe automatichumidifiercontrolmodelnumber
KUAWC0101CACor KUAWC0101BRY,DONOT LEAVEiN TEST
MODEASHUMIDIFIERWILL NOTOPERATE.
Besureto keepfireplacedampersclosedwhennotin use.Theyprovide
anexcellentescaperouteforheat,aswell ashumidity.
Onoccasion,indoormoistureproducingactivitiessuchasclothesdrying,
cooking,showers,etc.,mayraisethehumiditylevelhigherthanit should
be,eventhoughthe humidifieris notoperating.Telltaleindicationsare
condensationorfroston coldsurfacessuchaswindows,doors,walls,
etc.If suchcondensationpersistsforseveralhours,your homeshouldbe
ventilatedto dissipatethepotentiallydamagingexcessmoisture.
NOTE:Themanufacturerofthe devicerecommendsthat servicebe
performedonlybya qualifiedtechnician.Contactyourinstallingcontractor
forservice.SeeCautionsandWarningson pages2 and3 priorto
attemptingtheseprocedures.
Turnhumidifieroff and allow humidifierto drain.Disconnect
power before servicing.
InspectHumidifieratapproximately500hourintervalsor severaltimes
duringthe humidificationseason.
• Checksystemoperationand inspectall plumbingconnectionsand piping
for signsof cracksor leaks.
• Inspectdrainlineto makesureit isnotblockedandhasconstant
downwardslope.Cleanor replaceif necessary.
• Inspectsteamhoseto makesureit hasnolow spotsandhasconstant
upwardslopefromhumidifierto dispersiontubein duct.If dispersion
tubeis mountedbelowhumidifier,inspectdriptee drain.
Replacethecanisterannuallyandwhenpromptedbythe"Service"light.
Useonlygenuinereplacementpartnumber8045HUM.
1. PressOn/Offswitchtoturnhumidifieroff.Humidifierwill drainforfour
minutes.
2. Allowhumidifiertodrain.Whenthegreen"drain"LEDstopsflashing,
disconnectmainelectricalpowerto humidifier.
3. Removefront panel.
4. Pullthreewiresoff postsontopofcanister.(Twolargeelectrode
conductorsandonewater levelprobeconductor.)
5. Loosenhoseclampattopofcanister.
6. Slidehoseoff topofcanister.
7. Slidecanisterupandoutofdrainassembly.Discardcanister.
8. Removeo-ringfromdrainassemblyusingsmallscrewdriver.
g. Inspectdrainassemblyandremoveanydebris.Seedrainvalvecleaning
procedurein Installation& Maintenancemanual.
10.Insertnewo-ringintoslot in drainassembly.(O-ringis providedwith
canister.)Dampeno-ringwith waterbeforeinsertingcanister.Donotuse
oil,grease,or anylubricantbesideswater.
11.Makesurestrainerisinsertedintobottomofnewcanister.
12.Insertcanisterintodrainassembly.Positioncanisterwith labelfacing
outward.
13.Slipsteamhoseovertopof canisterandtightenhoseclamp.
14.Reattachthreewiresto postsontopofcanister.(Largerelectrode
conductorsareinterchangeable.)
15.Replacefront panel.
16.Inspectdrainlineto makesureit isnotblockedandhasconstant
downwardslope.Cleanorreplaceif necessary.
17.Inspectsteamhoseto makesureithasnolow spotsandhasconstant
upwardslopefromhumidifiertodispersiontubein duct.Ifdispersion
tubeis mountedbelowhumidifier,inspectdripteedrain.
18.Restoreelectricalpowertohumidifier.
19.TurnhumidifieronandverifygreenOn/Offlightisilluminated.
20. SeeStart-upprocedureinInstallation,Operation& Maintenancemanual.
Ifwaterflow fromfill valveisrestricted,disconnectinletfitting andremove
in-linestrainerusingsmallscrewfrom inletport.Cleanor replacestrainer.
-10- -11-

© 2012CAC/BDP
7310WestMorrisSt,,Indianapolis,IN46231
Form#OG-HUMXXSTM-01
10009952 B2205831A10.12