Carrier HUMXXSTM3034 Installation and operating instructions

Residential Steam Humidifier
Installation & aintenance Instructions
Safety Cautions.......................................... 2
Materials List........................................... 2
Principles of Operation................................... 3
Sequenceof Operation................................... 4
Specifications & Dimensions............................. 4
InstallationInstructions.................................. 6
Choosinga Location..................................... 6
- DispersionTube...................................... 6
- Humidifier.......................................... g
PrepareHumidifierfor Mounting.......................... 10
InstallSteamDispersionTube............................ 10
MountHumidifier...................................... 10
InstallSteamHose..................................... 10
SupplyWater.......................................... 10
ControlWiring......................................... 11
DrainLine............................................. 12
ElectricalPowerWiring& Shut-offSwitch.................. 12
Start-up Procedure ..................................... 17
Operating Modes....................................... 17
Shut Down Procedure................................... 18
Display Panel .......................................... 18
Maintenance........................................... lg
CheckingSystem Operation & Troubleshooting............ 20
ReplacementParts...................................... 23
iREAD AND SAVE THESE iNSTRUCTiONS 1

,_ CAUTIONS& WARNINGS
Humidifier
ManualHumidifierControl
Dispersiontube
Steamhose(6feet)
BlowerActivationRelay
7/8" I.D.draintubing(10feet)
Hoseclamps
Saddlevalve
Mountingscrews
Mainpowerdisconnectswitch
Wiring
1/4" O.D.supplywatertubing
Boardsfor mounting(ifrequired)

TheCanisterSteamHumidifierdelivershumidityintheform
ofsteamtotheconditionedspaceviatheHVACsystemduct.
Thehumidifiergeneratessteambyenergizingtwoelectrodes
thatextendintoacanisterofwater.Currentflowingbetween
theelectrodescausesthewatertoboil,creatingsteam.
Waterisintroducedtothehumidifierthroughafillvalveto
afillcuplocatedinthetopofthecabinet.Thefillcupserves
asanoverflowreservoirandprovidesanairgapbetweenthe
humidifierandwatersource.Thesteamcanisterisfilledfrom
thebottom.Thecanisterisseatedinadraincupassembly
whichincludesadrainvalve.Thedrainandfillvalveswork
togethertomaintainwaterlevelinthecanistertodeliver
theratedsteamcapacitybasedontheelectricalconductivity
ofthewaterandtotemperdrainwater.SeeFigure1for
representationoffillanddrainsystemandcanister.
Steamisdeliveredintotheairstreamthroughadispersion
tubemountedintheHVACsystemductwork.Openingsinthe
dispersiontubearefittedwith"Tubelets'M''whichextendinto
thecenterofthetube.Thedesignofthe dispersiontubeand
tubeletsdistributesteamoverawide areain theductand
directanycondensedmoisturebackintothesteamhose.
Mineralsthat arenaturallyfoundinwater causethewaterto
Steam
Outlet
Fill Cup_ ' - Overflow
F High Water
J LevelSensor
Electrodes
Flow Control
Orifice
Canister
Inlet
FillValve DrainValve
Drain Cup
Supply
Water
beelectricallyconductive.Waterconductivityis measuredin Drain
microSiemenspercentimeter(uS/cm).Mineralcontent,also go_52_
describedas"water hardness"isusuallymeasuredin grainspergallon.Becauseofthevarietyof mineralsthat arefoundinwater,thereis no
directcorrelationbetweenwater hardnessandconductivity,butgenerallythe higherthemineralcontent,thehighertheconductivity.
TheCanisterSteamHumidifierisdesignedtooperateonwaterwith conductivitybetween125and1,250uS/cm.Thiscorrelateslooselywith
waterwith hardnessbetween3 and36 grains/gallon.Waterthat isconsidered"hard"andalsosoftenedwaterworkwell inthe humidifier.The
humidifierwill makesteamwhenplumbedto low-conductivitywater butit takeslongertoreachnominalcapacity.
With low conductivitywater, it maytake the humidifierone week or moreof operationto reachratedcapacity,especially if it
is wired to operateon120volts. Whenoperatingon240volts,the humidifierusuallywill reach nominalcapacitywithin a few
hours,evenwith lower conductivitywater.
Aswater in thecanisterboilsandturnsintosteam,mineralsareleft behind.Mineralsremainingin solutionincreasetheconductivityof the
water.Mineralsalsodepositontothesubmergedportionsof theelectrodesrenderingthoseareasineffective.Asthis occurs,the levelofwater
in thecanisterrisesto exposeuncoatedelectrodesurface.
Therearebenefitsandtrade-offsto considerwhentheapplicationallowsa choicebetweenhardandsoftenedwater:
Hardwater: Thebenefitof hardwater is lessfrequentdrainingandfilling thanwith softwater,whichresultsin betterenergyandwater
efficiencyandmoreconsistentsteamoutput.However,canisterreplacementcouldbemorefrequentwith hardwater,becausehardwater scale
coatsthe electrodes.Theharderthewater,themorefrequenttheneedfora newcanister.
Softened water: Thebenefitof softenedwater is longercanisterlife (dependingonwater chemistry)thanwith hardwater,becausesoftened
waterdoesnotcoattheelectrodesnearlyasmuchashardwater.However,softenedwater ionsstayin solutiontomuchhigherconcentrations
thanhardwater ions.Thisrequiresmorefrequentdrainingandfilling,whichresultsin lessenergyandwater efficiencyandlessconsistent
steamoutput.

Conductivity(uS/era)
of water connectedto
humidifier
Estimatedgrains/gallon
(priorto anywater
softening)
Hardness(priortoany
water softening) Canisterbehavior Solution
Humidifierdoesnot Installationnot
0-125 0-3 NaturallySoft function, recommended.
Powerwith 240VAC,use
125-300 3-g NaturallySoft Longstartuptime. constantfanto decrease
timeto reachfull capacity.
SlightlyHard
ModeratelyHard
Hard
g-15
15-20
20-25
Optimalperformance
range.
300-500
600-640
64O-84O
Usehardor softened
wateL
Shortenedcanisterlife
840-1250 25-36 VeryHard dueto scalebuildup. Usesoftenedwater.
Canisterperformance Installationnot
above1250 36 ExtremelyHard degradesquickly, recommended.
Note:If softenedwater is notavailable,or if non-softenedwaterwill be usedin thehumidifier,usethis tableto estimatetheconductivityofthe
waterdeliveredto thehumidifier.Takethe appropriateactionsasnecessary.Usingsoftenedwater isgenerallyacceptableunlessthewater is
extremelyconductive.Theconductivityofsoftenedwater isusuallyslightlyhigherthanthe conductivityofthehardwater enteringthe softener.
Forsoftenedwater,usea conductivitytesttogetherwith thetableaboveif thereisa concernthat thewater maybe tooconductive.The
manufactureris notresponsibleforfailuresdueto misapplicationoftheproductusingwaterthat is unsuitableforthistechnology.
WhenthehumidifiercontroldetectsRHbelowtheset point,andprovidedthe humidifieristurnedonandthe HVACsystemblowerisoperating,
theinternalcontrollerin thehumidifierenergizesthe electrodesandmeasuresthe currentflowingthroughthewaterbetweenthem.The
controlleradjustswater levelin thecanisterviaafill valveanda drainvalveto maintaincurrentateither11.6or 16.0amps.Theoperatingwater
levelinthecanisterdependsonthemineralcontentofthewaterwhich determinesconductivity.
If thebloweractivationrelayisinstalled,thehumidifiercontrolwill turnontheHVACblowerwhena callforhumidityis made.
Amperage Voltage Maximumsteamcapacity(gai/day)
120V 11.5
11.5 208V 20.5
240V 23.3
120V 16.0
16.0 208V 30.0
240V 34.6
HumidifierShipping Weight:28 Ibs
HumidifierOperatingWeight:23 Ibs_
_Asmineralsprecipitateunitweightcanincreaseto approximately30 lb.

87/8"_
7/Fill Cup
53/4"
._ _ _"_
_ Dispersion OutletElectrical Knockouts
TOP VIEW
3"sq--
-_ _ 3" Mounting Plate
3/4" to first opening
_.0.4 1"
81/4"------_
-_- 2"sq
STEAMDISPERSIONTUBE
dia
101/8"_
207/8"
_----7 1/8"----_
o
Mounting
Holes
4"
FRONTVIEW SIDEVIEW BACKVIEW
o
!3/8" _1/I _
BOTTOMVIEW
Water Fill LineConnection
2"
90 1701

DiSPERSiONTUBE
Whenchoosinga locationforthedispersiontubethreethingsmustbeconsidered:Locationin duct,elevationwith respecttothehumidifier,and
distancefromhumidifiertodispersiontube.
DuctLocationandAbsorptionDistance
Thepreferredlocationforthedispersiontubeisin a supplyductbecausehighertemperatureairwill absorbmoisturemorereadily.The
dispersiontubemustbein astraightsectionofductfarenoughupstreamofanyobstructionor bendsintheductto allowthe steamtobefully
absorbed,preventingcondensationin theduct.Theexactdistancefromobstructionsin theductdependsonair temperature,RHsetpoint,and
airflowvelocityin theduct.Mostinstallationscanuseanabsorptiondistancebetween24and36 inches,howeverif thereareobstructionsin
theductworkuseTable3 to determinetheappropriateabsorptiondistance.Sizeabsorptiondistancebased on the lowesttemperature,
lowest air velocityand highesthumiditythatthesystem will see.Wheninstallingthehumidifierina systemwith variablespeedblower,
determineabsorptiondistancebasedonairflowat thelowestspeed.OperationduringACcallsisnotrecommendedbecauseofthepotentialfor
condensationintheductwork.If humidifieroperationis neededduringACoperation,makesureabsorptiondistanceisadequate.If absorption
distanceisinsufficient,configurecontrolsto lockouthumidifierduringtheACcallsandusethe bloweractivationfeatureto allowthehumidifier
to runwith thebloweronly.
Thedispersiontubemustbe mountedwith the plateona verticalsurfacewith thetubeangledupasshownin Figure3.Thesteamoutletsmust
faceupregardlessoftheairflowdirectionintheduct.Theplateis labeled"UP'to indicateproperorientation.Onhorizontalductrunsinstallthe
dispersiontubelowin theduct,onverticalrunscenterthetubeontheduct.
If thedispersiontubeismountedoninsulatedductwork,makesureinsulationisnotmorethan2" thickattubelocationto preventinsulation
fromblockingfirststeamoutlet.
Note: If two dispersiontubesareinstalledin oneduct,doublethedispersiondistances.Ifthreedispersiontubesareinstalled,triple the
dispersiondistance.Positiondispersiontubessoonedoesnotdischargedirectlyontoanother.
CAUTION

Humidifier 70°F& 30% RH 70°F& 45%RH G5°F& 45%RH 45°F&45%RH
Output(gai/day) AirflowVelocity* Setpoint Setpoint Setpoint Setpoint
300fpm 13" 19" 23" 30"
600fpm 6" 10" 12" 18"
Upto 16.0 1200fpm 3" 5" 6" 13"
1800fpm 2" 3" 4" 10"
300fpm 15" 23" 28" 45"
600fpm 6" 12" 13" 26"
20.5- 25.0 1200fpm 5" 6" 7" 19"
1800fpm 3" 4" 5" 16"
300fpm 24" 31" 36" 60"
600fpm 17" 22" 26" 48"
25.0- 35.0 1200fpm 12" 15" 18" 25"
1800fpm 10" 13" 15" 20"
_Velocityin feet perminute=Ductairflow volumein cubicfeetper minute/ductareain squarefeet.
Example:1,200cfmthrough16"x 12"duct=1,200/(12x 16/144sq.in./sqft.)= 1,200/1.333= %0 fpm

Elevation
Thepreferredlocationforthedispersiontubeishigherthanthe
humidifiersothatthesteamhosehasaconstantdownward
slopeofat least2" perfoot fromthedispersiontubetothe
humidifier.If hardpipeisused,theslopecanbe1/4" perfoot.
Withtheconstantdownwardslope,anycondensationthat
formsinthesteamhosewill drainbackintothesteamcanister.
SeeFigure3. Ifthedispersiontubemustbemountedbelow
thehumidifierorif thesteamhoseneedsto runupandover
anobstruction,a dripteewith draintrap,mustbeinstalledas
shownin Figure4.
CAUTION
Distancefrom Humidifierto DispersionTube
Thecapacityof thehumidifieris reducedbythelengthof
thesteamhoseor pipeduetocondensation.Themaximum
recommendedlengthofsteamhoseis6 feet. Usehardpipe
insulatedwith 1"fiberglassfor lengthsgreaterthan6feet.
Table4 provideshumidifiercapacitywith variouslengthsof
steamhoseandpipe.If 6-footsteamhosedoesnotreachfrom
humidifierto dispersiontube,splicein 1" copperpipeusing
%" x 1"reducingcouplingsasshownin Figure5.
Steam hose or pipe. _ Dis_
Insulate pipe with 1" fiberglass
to reduce steam loss. \ \
90° long sweep
or two 45° elbows Duct
*Pitch steam hose down from
dispersion tube to humidifier:
2"/ft (15%)minimum when
using steam hose.
1/4"/ftwhen using hard pipe.
g0 1704
Driptee installationfor
pipingoverobstruction,
or ifdispersiontube is
lower than humidifier.
90° long
sweep or two
45° elbows
90 1703
Insulate hard pipe to
reduce steam loss
To
Dispersion
Tube 6"min
8"rain
1"airgap -_
Open drain required,J I ]
see note 1. I I
R/I
\/
\/
\/
/\, I
// \\ !
Obstruction
Driptee
Draintrap
NOTES:
1.Referto governing codes for
drain pipe size and materials.
2.Support steam hose so there
are no sagsor low spots.
Steam
Hose or
Insulated
Pipe
Length
<2ft.
2 ft.
4 ft.
6 ft.
120VoIts
11.5Amps
Steam Insulated
Hose Pipe
11.5 11.5
11 11
10 11
9 11
16.0Amps 11.5Amps
Insulated
Pipe
20.5
2O
2O
2O
16.0Amps 11.5Amps
Insulated
Pipe
23.3
23
23
22
Steam
Hose
34.6
34
33
32
Steam Insulated
Hose Pipe
16.0 16.0
15.5 15.5
14.5 15.5
13.5 15
Steam
Hose
20.5
2O
19
18
208Volts
Steam Insulated
Hose Pipe
30.0 30.0
29 29.5
28 29.5
27 29
Steam
Hose
23.3
23
22
21
240Volts
16.0Amps
Insulated
Pipe
34.6
34
34
33

3/4" x 1" Reducing Coupling
Dispersion Tube
Steam Hose
1-1/2"HoseClamp
1"Copper Pipe
1-1/2" Hose Clamp
Steam Hose
Humidifier
901705
HUMiDiFiER
Donot mount humidifierin alocationwhere ambient
temperature exceeds104°Forwhere freezing temperatures
may occur. Extremetemperaturesmaycausethehumidifierto leak
whichcandamagefurnishingsorstructure.
Mounthumidifierina locationthat allowsaccessfor servicing,and
clearanceto removefront panelfor replacingthecanisterandside
panelforaccesstotheelectricalcomponentsduringinstallation.
SeeFigure6for minimumclearancesaroundhumidifier.
Thehumidifiershouldbemountedascloseto thedispersion
tubeaspossible.Table4 showshowcapacityis reducedasthe
distancebetweenthehumidifieranddispersiontubeincreases.If
thehumidifierismountedonthe ductdirectlybelowthedispersion
tube,allowspacefora bendin thesteamhose.Allow a minimum
of 2"of steamhoseto extendstraightoutofthe humidifierbefore
beginninganybends;thiswill helpensureatight connectionwith
thetopofthecanister.
Thehumidifiercanbe mountedto awoodsurface,orto sheetmetal
ductworkif it isstructurallystable.Donotmounthumidifierto fiber
ductboard.
Thehumidifiermustbemountedtoa verticalsurfaceandmustbe
mountedlevelin theuprightposition.
4"
FRONTViEW
16"for
Electrical
Access
16"
forDrain
16"for _ f/
Steam
Hose
30"for
Service
Access
SiDEViEW
90 1702

Unpackcarton.Openfrontpanelbyremovingscrewandlifting panelupandawayfromhumidifier.Disconnectthreewiresfromtopofcanister
bypullingstraightup.Thetwo largewires aretheelectrodeconductors.Thesmallerwire is connectedtothehighwater levelsensor.Remove
canisterbypullingit upandoutofdrainassembly.Removetwo screwsonrightsideof humidifierandlift sidepaneloff housingto expose
electricalcompartment.
Makesuresteamdispersiontubeis mountedhigherthanthe humidifiersothat condensatethat formsin thetuberunsbackintothecanister.
If thedispersiontubecannotbemountedhigherthanthehumidifierorif thesteamhosemustextendupfromthe humidifierthendownto the
dispersiontubedueto anobstruction,a dripteeanddraintrapsystemmustbe installedasshownin Figure4.
Drilla 1-1/4"diameterholeina verticalsurfaceof theductatthelocationchosenforthe dispersiontube.Positionthetubesoit is angledup,
regardlessofairflow direction.Securewith foursheetmetalscrewsprovided.
Securehumidifierto sturdywall usingscrewsprovided,orto sheetmetalduct.Humidifierweighs23 Ibs.with full canister.Makesuremounting
systemwill supportweight.If mountingto studframewall, installtwo spannerboardsto studsandfastenhumidifierto spannerboards.Make
surehumidifierismountedplumb.
Sixfeet of steamhoseisprovidedwith thehumidifier.Ifthesteamhosemustbecut,useahacksaw.If additionallengthisrequired,use
1" O.D.metalorcopperpipe.DonotusePVCpipe for steamline. Insulatepipewith 1" thickfiberglassto reducesteamloss.SeeTable4 for
humidifiercapacityatvariouslengthsofsteamhoseandpipe.
Usethesteamhoseprovided.Otherhosesmayhaveimpuritieswhichcancausefoamingin thecanister.Foamingcancausewater level
inaccuraciesandreducedsteamproduction.Whenusingpipe,removeall tracesof residualmaterialsusedto connectthepipeto preventfoaming.
Verifythatthe O-ringisin placeintheslot in thedrainassembly.DampentheO-ringwith water,thenreinsertcanister.(Donotuseoil,greaseor
anylubricantbesideswater.)Rotatethecanistersothe cautionlabelisvisible.
Attachsteamhoseto dispersiontubeandthento topofcanisterusinghoseclampsprovided.Useheawwire clampto securehosetocanister.
Makesuresteamhosehasaconstantslopeofat least2" perfoot betweenthedispersiontubeandthehumidifier.Anyandeverylowspotin the
steamhoseor pipemusthaveadripteeanddraintrap.Filldraintrapwith water beforemakingfinalconnections.
Attachandfully seattheelectrodeconductors(interchangeable)andthehighwater levelsensorwire.
Plumbthehumidifierto cold,hardorsoftenedwater.Donet usehot water because unheatedsupply water is useclto cool water
€lrainedfrom the humiditier. Donotusedemineralizedorreverseosmosiswater.Forproperoperation,supplywater pressuremustbe between
25psi and120psi.Hardor softenedwater maybeusedprovidedit hasconductivitybetween125IJS/cmand1250IJS/cm.
Supplywater pipingmustbefreeofoils, lubricants,solderflux andothercontaminants,whichcancausefoamingin thecanisterthat canleadto
watersputteringfromthe dispersiontubeintotheduct.
Installthesaddlevalveaccordingtothe instructionsprintedonthebag.Run1/4" coppertubingfromthesaddlevalveto thehumidifier.Connect
it to thefill valve.Doublewrenchto preventleakinganddamageto valve.
Note: Addingan inlineparticulatefilter canincreasecanisterlifein areaswith highlevelsof suspendedsolids.DONOTusefiltersthatrelease
scaleinhibitors,filtersofthis typecansignificantlydecreasecanisterlife.
10

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Thecontrolcircuitoperateson24VAC.InstallmanualhumidifiercontrolandbloweractivationrelayasshowninFigure7.SeeFigure7Afor
wiringHumiditrachumidifiercontrol.
If protectionfromover-humidificationisdesired,installoptionalhighhumiditylimit switchat least4 feetdownstreamofthedispersiontube.
REMOVEWlRE-_
"G" TO "G" \ TYPICAL24VAC
\TERMINAL STRIP
THERMOSTAT IN FURNACE
>©
o©
_.J
MANUAL
HUMIDIFIER
CONTROL
o_
BLOWERACTIVATION
RELAY
WHITE/YELLOW
WHITE/BLUE
NOTES:
1. 18AWGWIRE IS ACCEPTABLEFOR24V INSTALLATIONS.
2. "FAN PACK" TERMINALS PROVIDE24VAC ON CALLFORHUMIDITYAND REMAIN ENERGIZEDFOR
TWO MINUTES AFTERCALLIS SATISFIED.
(OPTIONAL)
o HIGHHUMIDITY
LIMIT SWITCH
o
I---
o_
CE
o_
o_
L,t-
901706
24VACSOURCE
ORFURNACEACCESSORY
TERMINALS
I I
I R C H ODT I
M
NOTES:
1.Set Power/Bypass switch to POWER.
2.Set Humidifier Pad Change indicator to OFE
3.Use 24 VACtransformer if furnace
accessory terminals are 120V.
--o_
i
I
A
OUTDOOR
TEMPERATURE
SENSOR
OPTIONAL
HIGH HUMIDITY
LIMIT SWITCH
CANISTERSTEAM HUMIDIFIER
90 1726
11

INFINITY/EVOLUTIONCONTROLWiRiNG
TheSteamHumidifierproducesinternal24VACin
ordertoenergizecontrolcircuits.Forthis application,
a 24VACN.0. IsolationRelay(DPST)partnumber
HN61KQ120availablethroughTotaline,MUSTbe
usedto preventmixingtheinternalhumidifierpower
with theindoorequipmenttransformer.Applying
24VACisolationrelaycoiltofurnaceorfancoil
HUMandCOMterminalswill allowtheInfinity/
EvolutionControlto automaticallyenergizetheHUM
outputduringa callforhumidification.TheN.0.relay
contactswill be usedto energizethe humidifier.See
Figure7B forwiring Infinity/Evolutioncontrol.
USER
INTERFACE
IN-.
IN-,
[2}.
IN-,
sl
s2
VARIABLE-SPEED
FURNACE/FANCOIL
GREEN _@
YELLOW _[_
WHITE __-]
RED _[_
II
HUM
GOM
24V
0
OAT
o24V N 0 r_- l
CDPST_r]j
OPTIONAL
HIGHHUMIDITY
LIMIT SWITCH
-o CANISTER
STEAM
-o HUMIDIFIER
90 1805
Attachthe7/8" I.D.draintubingprovidedtothedrainassemblyatthebottomofthe humidifier.Securewith the hoseclampprovided.Donot
overtighten.
Makesurethedrainlinehasa constantdownwardslopefromthehumidifierto thedrainandis notkinkedor blocked.
If floordrainisnotavailable,usecondensatepump(Part#5392)toroutewaterto a suitabledrain.
Note: Thehumidifierusescoldwatertotemperdrainwater to lessthan140°R
CAUTION
All wiringmustbeinstalledinaccordancewith all governingelectricalcodesandwith thewiringdiagramprovidedinsidethefront panel.
Powerwiring mustberatedfor 105°C(220°F).
Donotlooppowerwiring.
Donotusealuminumwire.
A safetygroundingsystemthatmeetsall governingelectricalcodesis required.Thegroundconnectionmustbe madewith solidmetalto metal
connections.Groundwire mustbethesamesizeasthepowerwiring.
With factorysettings,theSteamHumidifierdraws11.5amps+/- 10%.Usea minimum20ampdedicatedcircuitwheninstallingto operateat
11.5amps.TheSteamHumidifiercanbeset todraw16.0amps+/- 10%byrepositioningdip switch#1 onthecontrolcircuitboard(seeFigure
8).Whensetto 16amps,usea minimum25ampdedicatedcircuit.Forbothapplications,sizewire accordingto localcodes.
TheSteamHumidifierisshippedfromthefactorywiredfor240VACoperation,butit canoperateon120,208or 240VAC.
If using120Vor 208V,movethe black/white jumperwire attachedto L1tab onthe powerterminal blockto the propertab onthe
transformer terminal block.SeeFigureg.
12

WIRING INSTRUCTIONS
Installdisconnectswitch(notprovided)betweenline powersourceandhumidifier.
Knock-outsforpowerwiring andlowvoltagecontrolcircuitwiringarelocatedonthetopof thehumidifier.
Connectpowerandgroundwiringasshowninappropriatewiring diagram.
*240VAC- Figure10
*208VAC- Figure11
*120VAC- Figure12
Donotrunhighvoltagepowerlinesoverinternalcircuitboards.
El]
SLIDEDIPSWITCH#1 TO"ON" POSiTiON
FOR16.0AMPNOMINALOPERATION FACTORYSETTINGFOR11.5AMP NOMINALOPERATION
C© ©
©
INFACTORYWIREDPOSITION.
MOVETOAPPROPRIATETERMINAL
IFNOTINSTALLINGON240VAC.
901779 90 1777
13

90 1660
NOTE: HUMIDIFIERISSHIPPED
FROMTHEFACTORYWIRED IN
THE240 VOLTCONFIGURATION.
JUMPER WIRE_
TRANSFORMER -_
TERMINAL
BLOCK
HUMIDIFIER J
CONTROL
(PROVIDED)
FAN PACK
(OPTIONAL)
Nete:SeeFigure 7forwiring
with BlowerActivationRelay.
I I i
I
I I 12
I I
POWER
TERMINAL N
__ TRANSFORMER
BLU _ 75VA
24V AC
CONTROL PCB CURRENT SENSING PCB
BLU
WriT
BLU
WriT
BRN
BRN
YEL
YEL
BLK
BLK
BLU
C_
@
CEb
C_
@
@
ORG
+24V DC
+24V DC
...................._LK
z
,<,
COM
24V AC
24V AC
COM
24V AC
COM
24V AC
COM
L--o%
_2
POWER RELAY CONTACTS
8 _ _6
WriT
YEL
POWER RELAY COIL
oO1 I
FILL'_'/VALVE I
o J ,vE I
SAFETY SWITCH
s,.,.,.._O fEE
RIBBON CABLE
HIGH LEVEL PROBE
BLK
BLK
YEL
WATER LEVEL
PROBE
ELECTRODE O
STEAM CYLINDER
HIGH VOLTAGE WIRING
CONTROL CIRCUIT WIRING
FIELD WIRING
DISPLAY PANEL
STATIC
DISCHARGE
GROUND
14

NOTE: HUMIDIFIERISSHIPPEDFROM
THEFACTORYWIRED FOR240 VOLTS.
THEBLACK/WHITEWIREFROML1
MUSTBEMOVEDTOTHE208 VOLT
TERMINALFOR208 VOLTOPERATION.
JUMPER WIRE-_
TRANSFORMER __
TERMINAL
BLOCK
HUMIDIFIER J
CONTROL
(PROVIDED)
FAN PACK
(OPTIONAL)
Nete:SeeFi@ure7forwiring
with BlowerActivationRelay.
I I
I I
(NOT PROVIDED)
W _-F
", _
", POWER I f_ /---
', TERMINALI _,_12t N,
', BLOCK I _ --
/
I i IORG 120/208/240 VAC WHT
TRANSFORMER
BLU _ 75VA YEL
24V AC
CONTROL PCB CURRENT SENSING PCB
BLU
WriT
BLU
WHT
BRN
BRN
YEL
YEL
BLK
BLK
BLU
G
G
(SD
G
(57D
G
G
ORG
+24V D C
+24V DC
N
z
z
,<,
POWER RELAY COIL
COM 0 O 1
24V AC
24V AC ,/_,
FILL VALVE
COM
24V AC _,
DRAIN VALVE
COM
g
rr'
L9
BLK
HIGH LEVEL PROBE
1
1
1
POWER RELAY CONTACTS
I 6
--1
STATIC
DISCHARGE
GROUND
24V AC SAFETY SWITCH
COM s....-_(> YEL
RIBBON CABLE
BLK
,_ YEL
WATER LEVEL
PROBE
O
STEAM CYLINDER
HIGH VOLTAGE WIRING
CONTROL CIRCUIT WIRING --
FIELD WIRING
DISPLAY PANEL
90 1659
15

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90 1658
NOTE: HUMIDIFIERIS SHIPPEDFROM
THEFACTORYWIRED FOR240 VOLTS.
THEBLACK/WHITEWIREFROML1
MUST BEMOVEDTOTHE120 VOLT
TERMINALFOR120 VOLTOPERATION.
JUMPER WIRE_
TRANSFORMER _
TERMINAL
BLOCK
HUMIDIFIER J
CONTROL
(PROVIDED)
FAN PACK
(OPTIONAL)
I
I
MA'NPOWERSWtTCHI_
(NOT PROVIDED)
I
_\\ POWER
" TERMINAL I { L1) ( 1'4,
\, BLOCK I_
/_owe
TRANSFORMER
BLU _r-Y-'t-'Oh. 7SVA
24V AC
9
g
r¢
L9
POWER RELAY CONTACTS
CONTROL PCB CURRENT SENSING PCB
Nete:SeeFigure7forwiring
with BlowerActivationRelay.
BLU
Writ
BLU
WHT
____________
BRN
BRN
YEL
YEL
BLK
BLK
BLU
ORG
I
I
i
i
i
i
L.........
i
i
i
i
i
i
i
i
i
i
i
i
icD
i
icE:>
i
i
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i
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i
iced
i
i
+24V DC
+24V DC
:E
m
WriT
YEL
BLK
YEL
POWER RELAY COIL
COM 00 1/
24V AC ]
24V AC , /
FILL VALVE ]COM
24V AC ,,_ /
DRAIN VALVE /
COM ]
BLK
24V AC SAFETY SWITCH
COM ,s_--'c_ YEL
RIBBON CABLE
WATER LEVEL
PROBE
STEAM CYLINDER
HIGH VOLTAGE WIRING
CONTROL CIRCUIT WIRING --
--1
STATIC
DISCHARGE
GROUND
HIGH LEVEL PROBE
FIELD WIRING
DISPLAY PANEL
16

1. Oncethesupplywater,drain,steamhose,electricalpowerandcontrolwiring connectionsarecomplete,makesurecanisterisfully seated
intodrainvalveandthreewireconnectorsontopofcanisteraresecure.(Highwater probewire andtwo interchangeableelectrodewires.)
2. Attachsidepanelandfrontdoor.
3. Opensaddlevalveallowingwaterto flow to humidifier.Checkfor leaks.
4. Turnhumidifiercontrolknobto 0FE
5. Closemainpowerswitchenergizinghumidifier.
6. Press0n/0ff buttonon humidifier.The0n/0ff lightwill illuminategreen.
7. Makesurethe HVACblowerisoperatingandadjustthehumidifiercontroldialupto initiatea callforhumidity.
TheSteamlightwill illuminategreenindicatinga callfor humidityandthe Filllightwill illuminategreenindicatingthefill valveisopen
allowingthecanistertofill. Youshouldalsohearthewaterflowing.If water flows down drain while humidifier is filling, checkfor
kinks inhosesand makesureO-ringisproperlyseatedingroovein drainvalve.
8. Oncethe Filllightturnsoff,toverifythatthe humidifierwill drainproperly,pressthe 0n/0ff buttonto turnhumidifieroff.Youmayhearthe
fill valveopenallowingcoldwater toflow intothecanistertocoolthewater inthecanister.TheDrainlightwill flash greenfor 15seconds
thenturngreenfor fourminuteswhilethecanisterdrains.Oncethe Drainlightturnsoff,thedraincycleiscomplete.
g. Sethumidifiercontrolto properlevel.
10.Press0n/0ff buttonto turnhumidifieron.
Whenthehumidifierispoweredandturnedon,the"0n/0ff" lightis illuminatedgreen.
Duringfill cycles,the"Fill" lightilluminatesgreen.
Whenthehumidifieristurnedon,anytimethe controlsendsa callfor humidity,the Steamlightilluminatesgreen.
Anytimethedrainvalveisactivated,the "Drain"lightilluminatesgreen.
Duringinitialstart upwith a newcanister,thehumidifiermayrunthrougha seriesoffill/drain cyclesuntiltheconductivityofthewater isin
a rangethat allowsthehumidifierto generatesteamat theratedcapacity.If theconductivityofthewater islow,it maytakea weekor more
forthehumidifiertogeneratesteamattheratedcapacity.Theratedcapacityisachievedwhenthehumidifierisdetectinga nominalcurrent
of either11.5or 16.6ampsbetweentheelectrodes.If thehumidifierhasnotreachedcapacityafter 168hoursof operation,theSteamlight
will illuminateyellowon acallfor humidity.Thehumidifierwill continueto operatewith ayellow Steamlight,andmaysatisfythehumidity
requirements.Onceratedcapacityisreached,theSteamlightwill illuminategreen.
Theinternalcontrolleradjustswater levelinthecanisterto maintainthenominalcurrentbetweentheelectrodes.Asmineralsbuilduponthe
electrodes,theireffectivenessdecreases,sothecontrollerwill increasethewater leveltosubmergemoreof theelectrodesurface.Whenthe
water hasreachedthehighlevelprobeinthe canisterandtheinternalcontrollerno longerdetectsnominalcurrent,theServicelightwill flash
redindicatingthat thecanisterneedsto bereplaced.
If thehumidifierattemptstodrainthecanisterandcannot,thedrainandfill valveswill pulseon & off forfoursecondsto dislodgeminerals
whichmaybe blockingthedrainvalveports.TheDrainandFilllightswill flashon & off whenthis occurs.
Anytime powerisdisconnectedor humidifieristurnedoff,the internaltimerforstart-upanddraincyclesis reset.
If thehumidifierhasoperated168hourswithouta draincycle,thedrainvalvewill openanddrainthecanister.Normaloperationwill continue.
If thehumidifierisoperatinganda powerfailureoccurs,oncepoweris restored,the "On/Off"lightwill flashgreenforoneminute,thenthe
humidifierwill turnon.
Thehumidifierdoesnotneedto beturnedoff attheendofthehumidificationseason.If72 hourselapseswithout receivinga callforhumidity,
thecanisterwill automaticallydrain.TheDrainlightwill remainlit for24hours.Thismayalsooccurduringperiodsof inactivityduringthe
humidificationseason.Thehumidifierwill resumenormaloperationwhena callforhumidityis made.
17

Toturnhumidifieroff,pushON/OFFbuttononce.Humidifierwill enterfour-minutedraincycle.Fillvalvewill opentotemperdrainwater.The
Drainlightwill flashgreenfor 15secondsthenturngreenforfour minuteswhilethecanisterdrains.OncetheDrainlightturnsoff, thedrain
cycleiscompleteandthe humidifieris off.
Greenlightsindicatenormaloperation.
YellowSteamlightindicateshumidifierisoperatingat lessthanratedcapacity.YellowSteamlightalsoindicateshumidifieris inTestmode.
FlashingredServicelightindicatescanisterhasreachedtheendof its lifeandneedsto be replaced.
Solidredlightsindicatehumidifierhasshutdownandrequiresservice.
Disconnectingpowertohumidifierresetsinternaltimers.
On/Off
Steam
e
Service
Off
Solid green
FlashingGreen
Off
Solid Green
FlashingGreen
Solid Red
Off
Solid Green
Solid Yellow
Off
Solid Green
FlashingGreen
FlashingRed
Solid Red
Humidifieristurnedoff or powerisdisconnected.
Humidifieristurnedon.
Humidifieris preparingtoturnon.Occursif powerto humidifierwasturnedoff whenhumidifier
was on.Humidifierturnsonafter lightflashesforoneminute.
Fillvalvenotenergized.
Fillvalveis energized,fillingor replenishingcanisterwith water.(Duringdraincyclewhenfill valve
isopenallowingcoldwaterintocanisterto temperdrainwater,thefill lightdoesnotilluminate.)
FillandDrainValvesarepulsingtodislodgemineraldepositsfrom drain.Flashes10timesin4
seconds.Occursif highwater probedetectswater duringdraincycle.
Humidifiercannotfill canister.Humidifierstopsoperating.Occursafterfill valvehasbeenenergized
for40 minutesandhighwater probedoesnotdetectwater.
Humidifieris notproducingsteam
Humidifieristurnedonandreceivinga callfor humidityfromthecontrol.
Humidifieris producingsteambutat lessthanthe ratedcapacity.Occursif humidifierhasoperated
for 168hoursanddoesnotdetectnominalcurrentbetweenelectrodes.
Drainvalvenotenergized.
Drainvalveis energized,allowingwater todrainfromcanister.
Humidifieris preparingtodrain.Flashesfor 15secondsindicatingfill valveis openallowingcold
water intocanister.
Canisterhasreachedendof life. Humidifiercontinuesto operatebutat reducedcapacity.Occurs
after humidifierhasoperatedfor 168hoursplusanother24 hoursatlessthan75%ofthe maximum
operatingcurrentlevelbetweenelectrodes.
Humidifieris notoperatingandrequiresservice.
18

CAUTION
Inspecthumidifierwhenservicing.
• Checksystemoperationandinspectall plumbingconnectionsandpipingfor signsofcracksor leaks.
• Inspectdrainlineto makesureit isnotblockedandhasconstantdownwardslope.Cleanor replaceif necessary.
• Inspectsteamhoseto makesureit hasnolowspotsandhasconstantupwardslopefromhumidifiertodispersiontubein duct.If dispersion
tubeismountedbelowhumidifier,inspectdripteeanddrain.
Replacethe canisterannuallyandwhenpromptedbythe"Service"
light. Useonlygenuinereplacementpartnumber8045HUM.
1. PressOn/Offswitchtoturnhumidifieroff.
2. Allowhumidifiertodrain.Whenthe greenDrainlightstops
flashing,disconnectmainelectricalpowerto humidifier.
3. Removefrontpanel.
4. Pullthreewires off postsontopof canister.(Twolargeelectrode
conductorsandonewater levelprobeconductor.)
5. Loosenhoseclampattopof canister.
6. Slidehoseoff topofcanister.
7. Slidecanisterup andoutofdrainassembly.Discardcanister.
8. RemoveO-ringfromgroovein drainassemblyusingsmallscrew
driver.
g. Inspectdrainassemblyandremoveanydebris.
10. InsertnewO-ringintogroovein drainassembly.(O-ringis
providedwith canister.)DampenO-ringwith water before
insertingcanister.
Donotuseoil,grease,or anylubricantbesideswater.
11. Makesurestraineris insertedintobottomof newcanister.
12. Insertcanisterintodrainassembly.Positioncanisterwith label
facingoutward.
13. Slipsteamhoseovertopof canisterandtightenhoseclamp.
14. Reattachthreewiresto postsontop ofcanister.(Largerelectrode
conductorsareinterchangeable.)
15. Replacefront panel.
16. Restoreelectricalpowertohumidifier.
17. TurnhumidifieronandverifygreenOn/Offlightis illuminated.
18. SeeStart-upprocedure.
1. Turnunitoff atmembraneswitch.
2. Unitwill gothroughdraincycle- 4 mins- andturnoffwhen
complete.
3. Disconnectmainelectricalpowertohumidifieratthecircuitbreaker.
4. Allowtheunitto cool.
5. Removefrontdoor.
6. Removeelectrodewires,highwater probewire, steamhoseand
canister.
7. With yourfingerswirl thefluid/precipitatemixturein thebottomof
thedrainvalvereservoir.
8. Usingaspongeorpapertowelssoakupthewater inthe reservoir,
if necessaryusea wet/dryvacuumto removeresidue.
g. Cleanthe insideof thedrainport(wherecoilprojectsout)bygently
swabbingwith a bentcottonswaborothersoft implement.
10.Rinsethedrainvalvereservoirwith cleanwater andvacuumas
necessary.
11.Replacecanister,reconnectsteamhoseandwiresensuringwires
arefully seated.
12.Replacedoor.
13.Restorepower.
14.TurnunitON.
15.Checkfor leaks.
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If waterflow fromthevalveisrestricted:
1. Disconnecttheinletfitting andremovein-linestrainerfromthe
inletportusinga smallscrew.Cleanor replacestrainer
(part#4358).
2. Disconnecttheoutletfitting andremove,inspectandcleanthe
orifice.
19

CAUTION
Forgeneraloperationalproblems,checkto makesurehumidifieris installedcorrectly.
Tocheckgeneralfunctionofhumidifierandcomponents,thefollowingTestModeprocedurecanbeperformed.Humidifieraccesspanelsmustbe
removedandthe safetyswitchdepressed,powermustbeavailabletothe humidifierandthehumidifiercontrolknobmustbeturnedtothe OFF
position.Thehumidifiershouldbeplumbedto awater supplyandthedrainlineshouldbeconnected.TestModeinvolvesrepeatedlypressing
the0n/0ff buttonandlisteningfor audibleclicksasthevariouscomponentsareenergizedandde-energized.Thehumidifierwill remaininTest
Modeforfive minutes,thenautomaticallyreturntotheOff state.Ifthe procedureisnotcompletedinfive minutes,restartTestMode.Ifthe
humidifierorcomponentsdonotrespondasindicated,investigatecomponentsbeingtested.
1. Pressthe 0n/0ff buttonandholdit for 10secondsuntilall displaylightsturnon.0n/0ff, Fill,steamandDrainlightswill begreen.Service
lightwill bered.
2. Press0n/0ff buttonagain.All displaylightswill turnoff.
3. Press0n/0ff buttonagain.Filllightwill illuminateredandSteamlightwill illuminateyellow.
4. Press0n/0ff buttonagain.RedFilllightwill turnoff.Steamlightwill remainyellow.
5. Press0n/0ff buttonagain.Listenfor audibleclickasPowerRelayisenergized.If clickisnotheard,removebrownwiresfromterminalsJ7
andJ8 andmeasurevoltageacrossterminalsJ7 andJ8. If 24VACispresent,replacePowerRelay.If 24VACisnotpresent,replacecontrol
circuitboard.
6. Press0n/0ff buttonagain.Listenfor audibleclickaspowerrelayisde-energized.If clickisnotheard,removebrownwiresfromterminals
J7andJ8andmeasurevoltageacrossterminalsJ7 andJ8. If lessthan1VACis present,replacepowerrelay.Ifmorethan1VACispresent,
replacecontrolcircuitboard.
7. Pressthe 0n/0ff buttonagain.Listenfor aclickasthefill valveisenergized.Watershouldflow,fillingthe canister.If thevalvedoesnot
energize,measurevoltageacrosstheJ6FILLterminalsonthecontrolcircuitboard.If24VACis present,replacefill valve.If 24VACisnot
present,replacecontrolcircuitboard.
8. Press0n/0ff buttonagain.Listenfor clickasfill valveis de-energized.Watershouldstopflowing. Ifvalveremainsenergized,checkfor
voltageacross"J6 FILL"terminalsoncontrolcircuitboard.If lessthan1VACispresent,replacefill valve.If morethan1VACispresent,
replacecontrolcircuitboard.
9. Pressthe 0n/0ff buttonagain.Listenfor aclickasthedrainvalveisenergized.Watershouldflow downthedrain.If thevalvedoesnot
energize,removethedrainvalvewires fromterminalsJ3 andJ4 onthe controlcircuitboardandmeasurevoltageacrosstheterminals.If 24
VACispresent,replacedrainvalve.If 24VACisnotpresent,replacecontrolcircuitboard.
10. Press0n/0ff buttonagain.Listenfor clickasdrainvalveis de-energized.Watershouldstopflowing downthedrain.If valveremains
energized,removethedrainvalvewiresfromterminalsJ3andJ4 onthecontrolcircuitboardandmeasurevoltageacrosstheterminals.If
lessthan1VACis present,replacedrainvalve.If morethan1VACispresent,replacecontrolcircuitboard.
11. Pressthe 0n/0ff buttonagain.Listenfor afaint clickastheFANPACKterminalsonthecontrolcircuitboardareenergized.Iftheterminals
donotenergize,(24VACmeasuredacrossterminals)replacethecontrolcircuitboard.
12. Press0n/0ff buttonagain.Listenfor clickasFANPACKterminalsarede-energized.Iftheterminalsfail to energize(morethan1VAC
measuredacrossterminals)replacecontrolcircuitboard.
ExitTestModebydisconnectingpowerto humidifieror allowingfiveminutesto elapse.
20