Armstrong Series GFH Gas Fired HumidiClean (GFH-150, GFH-300 ...

WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

— Donotstoreorusegasolineorotherflammablevaporsandliquidsinthe vicinityofthisoranyotherappliance.

— WHAT TO DO IF YOU SMELL GAS

• Donottrytolightanyappliance.

• Donottouchanyelectricalswitch;sodonotuseanyphoneinyour building.

• Immediatelycallyourgassupplierfromaneighbor'sphone.Followthe gassupplier'sinstructions.

• Ifyoucannotreachyourgassupplier,callthefiredepartment.

— Installationandservicemustbeperformedbyaqualifiedinstaller,service agencyorthegassupplier.

Please read and save these instructions. This guide is to be left with the equipment owner.

For Customer Support Call:(269) 273-1415

ArmstrongInternational,Inc.816MapleStreet

ThreeRivers,MI49093

ArmstrongSeries GFH Gas Fired HumidiClean (GFH-150, GFH-300 and GFH-450)

Category I / III Gas Fired ApplianceInstallation and Maintenance Manual

Bulletin 548-D

2

Table of Contents

SafetyPrecautions....................................................................................................................... 4

Installation ................................................................................................................................. 5

SiteSelecton.................................................................................................................... 5

Mounting Unit................................................................................................................... 6

WaterFillSupply.............................................................................................................. 8 ElectricalService.............................................................................................................. 8

Drainage........................................................................................................................... 8

GasPiping ................................................................................................................................. 8

Gas Leak Testing.............................................................................................................. 9 CombustionAir........................................................................................................................... 10

Venting (General)....................................................................................................................... 12

HorizontallyVented........................................................................................................ 13

VerticallyVented............................................................................................................. 13

SteamDistribution...................................................................................................................... 14

Control Wiring............................................................................................................................. 15

ControlHumidistat.......................................................................................................... 15 HighLimitHumidistat..................................................................................................... 15

AirFlowPressureSwitch............................................................................................... 16

AlarmCircuit................................................................................................................... 16

OutdoorEnclosureOption.............................................................................................. 16

Start-UpProcedure..................................................................................................................... 22

3

Table of Contents

PrincipalofOperation................................................................................................................. 23

CompletingaServiceLifeCycle.................................................................................... 23

EndofSeasonDrain...................................................................................................... 23

Maintenance............................................................................................................................... 24

RecommendedInspectionSchedule.............................................................................. 24

ReplacingIonicBeds...................................................................................................... 24

CleaningLevelControlElectrodes................................................................................. 25

BurnerAssembly............................................................................................................ 26 Removing/ReplacingHeatExchanger......................................................................... 27

Troubleshooting.......................................................................................................................... 28

Diagnostics..................................................................................................................... 28

ClearingErrorCodes...................................................................................................... 29

DipSwitchSettings........................................................................................................ 29

WiringSchematics...................................................................................................................... 30

PartsList ............................................................................................................................... 38

4

Safety Precautions Warning:Improperinstallation,adjustment,alteration,service,maintenance,orusecancausecarbonmonoxidepoisoning,anexplosion,fire,electricalshock,orotherconditionsthatmaycausepersonalinjuryorpropertydamage.Consultaqualifiedinstaller,serviceagency,localgassupplier,oryourdistributororbranchforinformationorassistance.Thequalifiedinstalleroragencymustuseonlyfactoryauthorizedandlistedkitsoraccessorieswhenmodifyingthisproduct.Afailuretofollowthiswarningcancauseelectricalshock,fire,personalinjury,ordeath.

Specialattentionshouldbegiventotheapplicationofthishumidifier.Itisveryimportanttheproperventpipeisusedinregardtomaterialandsize.Accurateinformationshouldalsobegivenwithrespecttogasinputrate,andunitsizing.Improperinstallationormisapplicationofthehumidifiercanresultinexcessiverequiredmaintenance,orcancausepermanentcomponentfailure.

Whenworkingonequipment,observeprecautionsinthisliterature,tags,andlabelsattachedtoorshippedwiththeunitandothersafetyprecautionsthatmayapply.Wearsafetyglassesandworkgloves.Havefireextinguisheravailableduringstart-up,adjustmentprocedures,andservicecalls.

Donotusethisapplianceifanyparthasbeenunderwater.Immediatelycallaqualifiedservicetechniciantoinspecttheapplianceandreplaceanypartofthecontrolsystemandanygascontrolthathasbeenunderwater.

Donotlifthumidifierbygascontrols,gasmanifold,firebox,orcontrolpanel.Thisunitshouldonlybeliftedbycrossbeamsbetweenthesupportlegs.

Shouldoverheatingoccur,orthegassupplyfailstoshutoff,shutoffthemanualgasvalvetotheappliancebeforeshuttingofftheelectricalsupply.

Precautions:Theinstallationmustconformtotherequirementsoftheauthorityhavingjurisdictionor,intheabsence

of suchrequirements,totheNationalFuelGasCode,ANSIZ223.1(latestedition).InCanada,theinstallationofthisunitmustcomplywithlocalplumbingorwastewatercodesandotherapplicablecodesandwiththecurrentcodeCAN/CGA-B149.1,“InstallationCodeforNaturalGasBurningAppliancesandEquipment”orCAN/CGA-B149.2,“InstallationCodeforPropaneBurningApplicationsandEquipment.”

Donotinstallinpotentiallyexplosiveorflammableatmospheresladenwithgraindust,sawdust,orsimilarairbornematerials.

Installationofhumidifierinhighhumidityorsalt-wateratmosphereswillcauseacceleratedcorrosion,resultinginareductionofthenormallife-spanoftheunit.

Topreventprematureheatexchangerfailure,doNOTlocateANYgas-firedunitsinareaswherechlorinated,halogenatedoracidvaporsarepresentintheatmosphere.

Locatethehumidifierinanareaclearofcombustiblematerials,gasoline,andotherflammablevaporsandliquids.

Donotlocateunitsintightlysealedroomsorsmallcompartmentswithoutprovisionforadequatecombustionairandventing.Combustionairmustbesuppliedtotheconfinedspacethroughaminimumoftwopermanentopeningsintheenclosure,atleastonenearthebottom.Theyshouldprovideafreeareaofonesquareinchper1000BTUperhourratingoftheunitwithaminimumof100squareinchesforeachopening,whicheverisgreater.Seeinformationonpage10foradditionaldetails

5

D3277

HoseClampSteamHose

SolderedJoints

FullSizeTee

Hose2"CopperTee

Reducer1/2"or3/8"CopperTube

To Drain

FusedDisconnectorMagneticBreakerwithinSightofUnit

ProperlySizedVent 24"

GasSupply

Water in3/8"NPT

3/4"Copper

10"Min.

AirGap 3/4"Copper(Min.)Pitched1"per12"(Min.)toOpenDrain

2"InsulatedCopper

"P"TrapDrainEvery20'ofPipingoratBottomofVerticalRun

SeeDetail"A"

Pitch1"per12"BacktoUnit

Up

Figure 5-1

InstallationCheck Shipment. Aclaimshouldbefiledwiththetransportationcompany,andreportedtoArmstrongInternational,Inc.ifanyitemsaremissingordamaged.

Important: Removeallshippingmaterialsbeforeinstallingthehumidifier

Providealevel,solidfoundationforthehumidifier.Locatethehumidifierasnearaspossibletochimneyoroutsidewallsothatthefluepipefromthehumidifierisshortanddirect.Thelocationshouldalsobeassuchthatthegasignitionsystemcomponentsareprotectedfromwaterduringhumidifieroperationandservice.

Thehumidifiershouldbeinstalledinalocationawayfromdraftsandproperlyprotected.Ifinstalledinaseparateroom,followtheinstructionsconcerningcombustionandventilationair.

Thehumidifiershouldbelocatedinanareawhereleakagefromthetankoritsconnectionswillnotresultindamagetotheadjacentstructureortolowerfloorsofthestructure.Whensuchlocationscannotbeavoided,itisrecommendedthatasuitabledrainpan,adequatelydrained,beinstalledunderthehumidifier.Thepanmustnotrestrictcombustionairflow.

Thehumidifiershallnotbeinstalleddirectlyoncarpeting,tileorothercombustiblematerialotherthanwoodflooring.

Installhumidifiersoelectricalcomponentsareprotectedfromwater.

Thisappliancemustbeinstalledinalocationfreeofinsulationmaterials.Someinsulatingmaterialsmaybecombustible.Applianceareamustbeinspectedduringinstallation,orwheninsulationisadded.

Minimumhorizontalclearanceof4feetfromelectricmeters,gasmeterregulator,andreliefequipment.

Site Selection. Thehumidifiershouldbeinstalledinaneasilyaccessiblelocation.Donotinstalltheunitwheremalfunctionofthehumidifiermightcausedamagetonon-repairable,irreplaceable,orpricelessproperty.LocatingtheHumidifier

Humidifierfluegassesmustbeventedtotheoutsideatmosphere.

Powersupplydisconnectswitchmustbeintheimmediatevicinityoftheunitandmustbeintheoffpositionwhilemakingwiringconnectionstopreventelectricalshockandequipmentdamage.Wiringofthisunitmustcomplywithallmanuals,wiringlabelsincludedandalllocalcodes.

Turnoffallgaswhileinstallingtherun-outandmanualshut-offvalveforthehumidifier.

6

A

T

U F

J P N

HK

C

V

D E

SL

G

B

T

A

F

N J P

KH

MW

S

L

G

B

ED

CFigure 6-1. Model 150

T

A

U F

JP N

HK

SL

D

V

C

E

G

B

Figure 6-2. Model 300

Figure 6-3. Model 450

Mounting Unit. TheSeriesGFHisdesignedtobefloormountedonalevelsurface.

Required ClearanceForrecommendedserviceandmaintenancepurposes,thefollowingclearancesshouldbemaintained: Front:40” LeftSide:1" RightSide:1” Rear:1" Top:36"

7

Table 7-1. GFH Gas Fired HumidiClean Physical DataGHF-150 GFH-300 GFH-450

in mm in mm in mm

A - Tank Width 22 559 35-1/4 895 48-1/2 1232

B - Overall Height 54-3/16 1378 54-3/16 1376 54-3/16 1376

C - Overall Width 46-1/8 1172 50-3/8 1280 54-7/8 1394

D - Steam Outlet to End of Cabinet 24-13/16 630 23-13/16 605 24-13/16 630

E - Steam Outlet Spacing 10 254 12 305 10 254

F - Steam Outlet to Edge of Tank 11 279 11-5/8 295 16-1/8 410

G - Vent Outlet to Floor 35-1/2 902 40-1/2 1029 40-1/2 1029

H - Drain Outlet to Edge of Tank 3-3/4 95 3-3/4 95 3-3/4 95

J - Water Inlet to Floor 12-7/8 327 12-7/8 327 12-7/8 327

K - Water Inlet to Edge of Tank 3/4 20 3/4 20 3/4 20

L - Drain Outlet to Edge of Tank 2-1/4 57 2-1/8 54 2-1/8 54

M - Gas Inlet to Edge of Tank 15-13/16 402 15-1/2 402 - -

N - Gas to Floor 14-1/4 362 7 178 7 178

P - Drain Outlet to Floor 11-7/16 291 9 232 9-1/8 232

S - Water Inlet to Edge of Tank 4-3/4 121 4-5/8 117 4-5/8 117

T - Cabinet Opening Clearance 44-1/8 1121 70-5/16 1786 96-13/16 2459

U - Steam Outlet Spacing - - 12 305 16 406

V - Vent Outlet to Front of Cabinet - - 47-7/8 1216 51-7/8 1317

W - Gas Inlet to Edge of Tank 7-1/4 84 - - - -

Water Inlet 3/8" NPT 10 3/8" NPT 10 3/8" NPT 10

Drain Connection 3/4" 20 3/4" 20 3/4" 20

Gas Inlet 1/2" NPT 15 1-1/2" NPT 40 1-1/2" NPT 40

Vent Size - Category I (Vertical)* 5" 127 7" 178 8" 203

Vent Size - Category II (Horizontal)** 3" 75 4" 100 5" 127

Steam Outlets 2-3/8" OD / 4" Flg.

Dry Weight - Lbs (Kg) 295 (134) 415 (188) 540 (245)

Wet Weight - Lbs (Kg) 700 (318) 1110 (503) 1670 (758)

Shipping Weight - Lbs (Kg) 425 (193) 550 (249) 700 (318)

Table 7.3. GFH Gas Fired Humidifier Capacities (Propane Gas)

Model NumberSteam Capacity Max. Input

btu/hrlb/hr kg/hr

GFH-150/GFH-150DI 150 68 200,000

GFH-300/GFH-300DI 308 140 400,000

GFH-450/GFH-450DI 465 211 600,000

Table 7.2. GFH Gas Fired Humidifier Capacities (Natural Gas)

Model NumberSteam Capacity Max. Input

btu/hrlb/hr kg/hr

GFH-150/GFH-150DI 155 70 210,000

GFH-300/GFH-300DI 315 143 420,000

GFH-450/GFH-450DI 475 215 630,000

*-"B"-Ventcanbeusedinverticalventpipingorientationonly.**-CategoryIIIventpipingisrequiredforhorizontalventpipeorientation.Maximumventpipedistancewillbe100'equivalentpipingdistanceineithercase.

Note:Forhighaltitudesabove2000ft,ade-ratingfactorwillneedtobeapplied.Thestandardde-ratingfactorwillbe4%per1000ftabove2000ft.

Note:Forhighaltitudesabove2000ft,ade-ratingfactorwillneedtobeapplied.Thestandardde-ratingfactorwillbe4%per1000ftabove2000ft.

8

Water Fill SupplyThehumidifiercanuseanypotableorpurifiedwatersupply.Waterpressuremustbe25–125psi(1.7–8.6bar).Watertemperaturemustbelessthan140°F(60°C).Averagefillratesforallmodelsis 3gpm(0.19l/sec).

1. Installashut-offvalveneartheunit.

2. Connectthewatersupplytothe3/8”NPTfittingonthefillwatersolenoidvalve.

Electrical Service Wiring1. Thecontrolcabinetwillrequire120V1phsupplytotheterminalsL1andL2inthecabinet.

2. Astandard120V15Aserviceisrequired.

3. TheSeriesGFHmustbeelectricallygroundedinaccordancewithlocalcodes,orintheabsenceoflocal codes,withtheNationalElectricalCode,ANSI/NFPA70,and/ortheCSAC22.1ElectricalCode.

DrainageA¾”connectionisavailabletoconnecta10”Ptraptofacilitateproperdraining.PleaseseeFigure5-1forinformation.Averagedrainratesforallmodelsis3gpm(0.19l/sec).

Gas Piping Selection

Caution:Gas pressure to humidifier controls must never exceed 14” WC (1/2 psi). A 1/8” NPT plugged tapping, accessible for test gauge connection, must be installed immediately upstream of the gas supply connection to the appliance.

Installationofpipingmustbeinaccordancewithlocalcodes,andANSIZ223.1,“NationalFuelGasCode,”orCAN/CGA-B149inCanada.Donotuseflexibleconnectors.

Pipingtounitshouldconformwithlocalandnationalrequirementsfortypeandvolumeandgashandled,andpressuredropallowedinline.RefertoTable9-1and9-2todeterminethecubicfeetperhour(cfh)forthetypeofgasandsizeofunittobeinstalled.Usingthisvalueandthelengthofpipenecessary,determinethepipediameter.Wherethesamemainservesseveralunits,thetotalcapacity,gasflow(cfh),andlengthofmainmustbeconsidered.Avoidpipesizessmallerthan½”.Table9-1allowsfortheusualnumberoffittingswitha0.3”WCpressuredrop.Afterthreadingandreamingtheends,inspectpipingandremoveloosedirtandchips.

Supportpipingsothatnostrainsareimposedonunitorcontrols.

Usetwowrencheswhenconnectingpipingtounitcontrols.

Provideadrippocketbeforeeachunitandinthelinewherelowspotscannotbeavoided.

Take-offtounitshouldcomeupfromtoporsideofmaintoavoidtrappingcondensate.

Pipingsubjecttowidetemperaturevariationsshouldbeinsulated.

Pitchpipinguptowardunitatleast¼”per15feetofhorizontalrun.

Compoundsusedonthreadedjointsofgaspipingmustberesistanttoactionofliquefiedpetroleumgasses.

Purgeairbeforelightingunitbydisconnectingpipingatgascontrol. In no case should line be purged into heat exchanger.

Afterinstallation,checkfieldpipingandhumidifiergastrainforgasleaks.Donotusesoapsolutiononhumidifiergastrain.

Installagroundjointunionandamanualshut-offvalveimmediatelyupstreamoftheunitincludinga1/8”NPTpluggedtappingaccessiblefortestgaugeconnection.Pluggedtappingsfortestgaugesarelocatedonallgasvalves.

9

Table 9-2. Specific Gravity Conversion Factors

Natural Gas Propane Gas

Specific Gravity Factor Specific Gravity Factor

0.55 1.04 1.50 0.633

0.60 1.00 1.53 0.626

0.65 0.962 1.60 0.612

Table 9-1. Gas Pipe Capacities

Lengthof Pipe(Feet)

Gas Flow in Piping (Cu. Ft. per Hour)

Iron Pipe Size (NPT) Inches

1/2 3/4 1 1-1/4 1-1/2

10 132 278 520 1050 1600

20 92 190 350 730 1100

30 73 152 285 590 890

40 63 130 245 500 760

50 56 115 215 440 670

60 50 105 195 400 610

70 46 96 180 370 560

80 43 90 170 350 530

90 40 84 160 320 490

100 38 79 150 305 460

Plugged1/8"NPTTestGaugeConn.

GasCock

GasSupplyLine

Note:Allpipingandfittingsexternaltohumidifiersuppliedbyothers.

DripPocket3"Min.

GroundJointUnion

HumidifierCabinet

GasCockSuppliedbyArmstrongInternational,Inc.

Figure 9-1

Allowatleast5feetofpipingbetweenanyhighpressureregulatorandunitpipeconnection.

Thephysicallocationofthemanualmainshut-offvalveexternaltothejacketwhenlocalcodesrequirethe installationofsuchavalve.

Gas Leak TestingWhenleaktestingthegassupplypipingsystem,thehumidifieranditsgasshut-offvalvemustbe

disconnectedduringanypressuretestinginexcessof14”WC(1/2psi).Thehumidifiermustbeisolatedfromthegassupplypipingsystembyclosingthefield-installedmanualshut-offvalveduringanypressuretestingequaltoorlessthan14”WC(1/2psi).

Verifythegassupplypressureupstreamofgascontrolunitis7”WConnaturalgas,or11”WConLPGas.PurgingofgasshouldbeperformedasdescribedinANSIZ223.1(latestedition)or,inCanada,CAN/CGA-B149codes.

MinimumSupplyPressure:5”WCforNaturalGasand10”WCforLP

10

Combustion AirCaution:Air for combustion must not be contaminated by halogenated hydrocarbons, which include fluoride, chloride, bromides and iodide. These elements are found in aerosol sprays, detergents, bleaches, cleaning solvents, salts, air fresheners, and other household products. Humidifier warranty is voided when failure of gas equipment is due to operation in a corrosive atmosphere.

Caution:If the humidifier is installed in an unconfined space within a building of conventional frame, masonry or metal construction, infiltration air is normally adequate for proper combustion and ventilation. If the humidifier is installed in a confined space provisions for combustion air must be made. Any ventilation equipment located in immediate proximity of the humidifier could cause a negative pressure condition at the humidifier. Appropriate make-up air must be supplied to compensate for all other ventilation equipment in addition to that required by the humidifier.

ProperoperationoftheSeriesGFHrequiresairforcombustionandventilation.ProvisionsforcombustionandventilationairmustcomplywithSection5.3,AirforCombustionandVentilation,oftheNationalFuelGasCode,ANSIZ223.1-1988,oracceptableprovisionsforthelocalbuildingcodes.Canadianinstallationsmustbeinstalledinaccordancewithsections7.2,7.3and7.4oftheCAN/CGA.B149InstallationCodes,andallauthoritieshavingjurisdiction.

Do not blockorobstructanyopeningsontheappliance,spacesaroundtheappliance,orairopeningsadjacenttotheappliancearea.

Do notblocktheflowofcombustionorventilationair.Openingsmustbeprovidedfornecessarycombustionairtoentertheareawherethehumidifierislocatedfromanoutsidesource.Anyenclosedspace,suchasmechanicalrooms,mustbeventilatedtoprovidethepropersupplyoffreshairforburnercombustion.Thesizeoftheopeningisdependentupontheratingoftheburner.

Sealed Combustion AirAllmodelsintheGFHfamilywillbecapableofsealedcombustionwiththeinstallationofthesealedcombustionkit.Thiskitwillfacilitatecombustionairbeingdrawnthru4”PVCpipeforadistanceupto40feetequivalentpipingfromanoutdoorairsource.

Aconfinedspaceisonehavingavolumeoflessthan50cubicfeetper1000BTU/hroftheaggregateinputofallapplianceswithinthatspace.

Theairistobesuppliedbytwoequalsizeopenings,onewithin12”belowtheceiling,andonewithin12”abovethefloor.

Anopeningmustbeprovidednotlessthanonesquareinchper1000BTU/hrofthetotalinputratingofalltheappliancessharingtheenclosure.Theminimumopeningistobe100squareinches.

Buildingsofunusuallytightconstructionmusthavethecombustionandventilationairsuppliedfromoutdoors,orafreelyventilatedatticorcrawlspace.

Ifairissuppliedfromoutdoors,directlyorthroughverticalducts,theremustbetwoopeningssizedatnotlessthan1squareinchper4000BTU/hroftotalinputratingofallappliancessharingtheenclosure.

Ifhorizontalductsaretobeused,eachopeningmustbesizedatnotlessthan1squareinchper2000 BTU/hrofthetotalinputratingofalltheappliancessharingtheenclosure.

Iftheductopeningsaretobecoveredwithaprotectivescreenorgrill,themeshwillnotbesmallerthan¼”topreventcloggingbylintorotherdebris.

11

Theoutdoorairsourcecanbeaconnectionoutsidethebuildingoraconnectiontoanoutdoorairplenuminsidethebuilding.Iftheinletcombustionairistobedrawninfromaconnectionoutsidethebuilding,specialprecautionsmustbemade,suchasproperterminationoutsidethewall,andascreenontheairinlettopreventanydebrisfromenteringtheairinletpipe. TheGFH-150willrequirea4”x2”Teetobeinstalledonthesupplied2”sectionofPVCpipe,then4”PVC/CPVCfortheinletairpipe.

TheGFH-300andGFH-450willcomeshippedwitha4”PVCconnectionforthesupplyairpipetobeconnected.

SeeFigure11-1and11-2belowforfurtherdetail.

Figure 11-1

*RefertospecialSealedCombustionPackageVentingRequirementsonPage14.

Figure 11-2

GFH-150One Burner

GFH-300TwoBurner

GFH-450Three Burner

Tubing2"x7"A22429

Tubing2"x7"A22429

Tubing2"x7"A22429

CouplerB6733

Tee A22431

Tee A22431Tee A22431

Tubing4"x9.5"LongA22430

Tubing4"x9.5"LongA22430

CouplerB6733

CouplerB6733

13.25 13.25

VaneS-AssyB6893

12

VentingOverview-ThishumidifierisaCategoryI/IIIappliance,whichmeansitproducesapositivepressureintheventsystemwhenitisexhaustingtheapplianceflueproductstotheoutdoors.ItmaybeventedverticalorhorizontalbutspecialfluepipemustbeusedwhichislistedforCategoryI/IIIappliancesforhorizontalpiping.Inthecaseofverticalfluepipingarrangement,typeBdoublewallventpipeisacceptable.VerifyproperfluepipingsizesfromTable7-1astheventpipesizesmaydifferbasedonorientationofventpiping.CategoryI/IIIappliancesalsoproducefluegastemperatureswhichareabove250°F,therefore,plasticPVCorCPVCventpipingisnotacceptable.Thishumidifiermaynotbecommonventedwithanyothergas,wood,oroilfiredproducts.

TheSeriesGFHisaCategoryI/IIIfanassistedappliance.

Themaximumventlengthis100equivalentfeet(40ft.ifSealedCombustionPackageisused)ofappropriateventpipewitheachelbowconsideredtheequivalentof5feetofstraightpipe.Theminimumventlengthis10feet.Nomorethan6elbowsshouldbeusedinthesystem.

Byproperlyventingthehumidifier,properremovalofcombustiongasescanbeassured.Properventingalsoassuresalltheby-productsofthecombustiongasesareremoved.

ConnectingthehumidifiertothegasventorchimneyshouldbeinaccordancewithPart7,VentingofEquipment,oftheNationalFuelGasCode,ANSIZ223.1,orSection7,VentingsystemsandAirSupplyAppliances,oftheCAN/CGAB149InstallationCodes,thelocalbuildingcodes,andtheventmanufacturer’sinstructions.

ThestacksizetobeusedwiththeSeriesGFHshouldbeinaccordancewithTable7-1.Reducedsizeventpipingshouldnotbeused.TheconnectionprovidedwiththeGFHisconsideredtobeaMALEconnection.

Themaximumfluegastemperatureatthehumidifierventconnectorwillnotexceed460°F(238°C).UseonlyspecialgasventslistedforusewithCategoryI/IIIgasburningappliances.TheventpipesystemsshallbelistedtoULStandard1738intheUSAandULC-S636inCanada.SomeoftheapprovedmanufacturerstobeusedwiththeseriesGFHGasFiredHumidifiersareDuravent(CategoryI)andFlexmasterZ-FlexorMetalBestos(CategoryIII).

EachmanufacturerhasspecialULlistedwindcapsforverticalventingwiththeirbrandofventpipe.Theventmaterialmanufacturer'sinstructionsforverticalventingmustbefollowed.

Ifventpipeisbeinginstalledinanexistingchimney,havechimneyinspectedforblockages,andcleanedifnecessary.

Inspectventpipeforproperandtightconstruction.Verifytherearenorestrictionsorblockagesintheventpipe.

Chimneyorventpipemustextendatleast3feetaboveitshighestpassagethroughtheroofandatleast2feetaboveanyridgewithin10feetofthechimney.(Localcodesapply.)

Clearancesmustbeobservedforanycombustiblematerialfromtheventconnector.Thisclearanceshouldbea6”minimum,unlessthecombustiblematerialsareprotectedinaccordancewithapplicablecodes.

VENTING INTO AN UNLINED MASONRY OR CONCRETE CHIMNEY IS PROHIBITED BY CODE.

Thishumidifiercannotshareachimneyflueservicingaseparateappliancedesignedtoburnsolidfuel.Neverconnectthishumidifiertoachimneybeingusedbyafireplaceunlessthefireplacehasbeenpermanentlysealedoff.

Thisappliancemaynotbecommonventedwithanyothernaturaldraftgasappliancesorpowerorforcedexhaustedappliance.

13

Figure 13-1Wall

45 °VentPipe

3"

Anyventconnectorsexposedtoambienttemperatureslessthan30°F(-1°C)shouldbeinsulated.

Ifthishumidifierisventedtoalinedmasonrychimney,thechimneymustbesizedandinstalledinaccordancewiththeprovisionsoftheNationalFuelGasCode,orCanadianCAN/CGA.B149requirements.VentconnectorsfromthehumidifiertothechimneyshouldbemadewithaventpiperatedforCategoryI/IIIappliancerating.SeeTable12-1forrecommendedmanufacturers.

Aminimumofturnsandelbowsshouldbeused,andtheventpipeshouldberunasdirectlyaspossible.

Eventhoughtheventsystemtobeusedisstainlesssteel,caremustbetakenthatnocondensatefromcombustionbeallowedtositintheventpipe.Therefore,itisimportanttoalwaysprovidetheproperpitchforcondensatedrainingpurposes.

Caremustbetakenwhenevertheventsystemisrunthroughacoldareaofthebuildingasthiswillincreasethelikelihoodoffluegasescondensinginthefluepipe.Toreducetherisk,thefluepipeshouldbeinsulatedwhenitpassesthroughacoldareaoranareawherethereisagreatamountofcirculatingairpassingoverthefluepipe.

Toensuretherewillbenomovementafterinstallation,theventpipemustberigidlysupportedevery5feetorlesswithhangarsorstraps.Thehumidifiershouldnotbesupportingtheweightoftheventpipe.Theventpipeshouldatnotimepassthroughorextendintoanycirculationairductorplenum.

Iftheventpipeshouldneedtorunthrufloors,ceilings,orwalls,properclearancesfromcombustiblematerialsmustbeobserved.TheventpipewillalsorequirefirestoppingaccordingtotheNationalFuelGasCoderequirements,ANSIZ223.1andCanadianStandardsCAN/CGA.B149.

Ininstallationswhereanexistingventsystemmaybeused,theexistingventsystemmustbeinspectedforcondition,size,typeofventmaterial,andheighttomeettherequirementsintheseinstructions.Condensationandcorrosioncouldoccuriftheexistingventsystemistoolargeandshouldbechangedtomeettherequirementsinthisinstructionmanual.Whenconnectingthehumidifiertoagasventorchimney,theinstallationsshallbeinaccordancewithPart7,VentingofEquipment,oftheNationalFuelGasCode,ANSIZ223.1,orSection7,VentingSystemsandAirSupplyAppliances,oftheCAN/CGA.B149InstallationCodes,thelocalbuildingcodes,andtheventmanufacturer’sinstructions.

Horizontally Vented HumidifierMaintainanupwardslopeof1/4”perfootonallhorizontalventpiperuns.

Toensuretherewillbenomovementafterinstallation,theventpipeshouldberigidlysupportedevery5feetorlesswithhangarsorstraps.The humidifiershouldnotbesupportingtheweightoftheventpipe.Theventpipeshouldatnotimepassthroughorextendintoanycirculationairductorplenum.

Distancesfromtheventterminaladjacenttopublicwalkways,buildings,andoperablewindowsandbuildingopeningsshouldbeinaccordancewiththeNationalFuelGasCode,ANSIZ223.1and/orCAN/CGA.B149 InstallationCodes

Theventterminallocationmustbeatasufficientheightabovegroundleveltopreventblockingby expectedsnowfall

Buildingmaterialsshouldbeprotectedfromcorrosionbyfluegases

Attheexitpointoutsidethebuildingaproperventtermination"cap"mustbeusedasshowninFig.13-1.Thedimensionsshownmustbefollowedinorderforthehumidifiertoworkproperlyunderhighwind conditions.

Vertically Vented HumidifierThehumidifiermaybeventedverticalbutitshouldbedonewithasstraightandshortofarunaspossible

andinallcasesmustbewithinthestatedminimumandmaximumventlengthsof10'to100'.

14

45 °

45 °Elbow

FlueVent

12"Min.

18"Min.

11"Min.9"Min.

Vane

Air Intake

4"Coupling4"CombustionAirTerminal

18"Min.18"Min.

45 °

Air Intake

ForRightHandedFlueVent

ForLeftHandedFlueVent

Whenventedverticalitmayventintoachimneywhentheaboverulesarefollowedconcerninglining;orit mayusealistedCategoryIIIventwithaULlistedwindcapattheterminationabovetheroof.

Figure 14-1Sealed Combustion Package Venting Requirements

Sealedcombustioncanbeusedwithhorizontalorverticalventing,buttheintakeandexhaustmustbe locatedinthesamepressurezone.SeeFigure14-1formountingconfiguration.

Steam Distribution1. Thedispersiontubeshouldbeproperlength.VerifycorrectsizefromTable14-1.

2. Installdispersiontubehorizontallyinductsoholesfaceupward.Airflowmustbeverticaluporhorizontal. Donotrestrictductwithaheightof8"(20cm)orless.Installationsover2000FPM(10m/s)airvelocity arenotrecommended.Consultfactoryifairflowisverticaldownorairvelocityisover2000FPM(10m/s). Donotinstallinductedsystemswithstaticpressureexceeding6”WC(15cm).

3. Thedispersiontubeshouldbelocatedupstreamofastraightductrun,withoutobstructions,10feet(3m) ormoreinlength.Consultthefactoryifthisdistanceisnotavailable.

4. Usethetemplateprovidedtocutdispersiontubeinstallationholes.Fastenthemountingplatetoductwith sheetmetalscrews.Ifthedispersiontubeis36"(91cm)orlonger,supportthefarendwiththreadedrod orsimilarmeans.

5. ThedispersiontubesshouldbeconnectedtotheGFHtankusingcopperpipe(stainlesssteelforDIunits). Thepipesizeofthesteamrunshouldcorrespondwiththenominalpipesizeofthesteamoutletonthe generator.Hosecuffsareprovidedwiththeunittoconnecttothesteamsupplypiping.Pitchpipeback tounit1”(2.5cm)perfoot.Thesteampipemustbefreeofkinksandsagstoallowforgravitydrainageof condensate.Maximumpiperundistancefromtanktodispersiontubeis40feet(12m)equivalentpiping length.Avoidexcessiveuseofelbowsor45°changesindirection.A“P”trapdrainshouldbeinstalled every20feet(6m)ofpipingrunoratthebottomofverticalrunsthatcannotdrainbacktothetank.See Fig.5-1for“P”trapdetail.

Alternative for shortened non-wettable vapor trailForapplicationswithparticularlylimiteddownstreamabsorptiondistance,ArmstrongHumidiPackmaybeconsidered.HumidiPackisaprefabricatedseparator/headerandmultipledispersiontubeassembly.Itprovidesuniformdistributionandshortenednon-wettingvaportrail.ConsultArmstrongInstallationBulletinNo.560formoreinformation.

15

Armstrong C-1471 & C-14721.9 - 3.9 Vdc

Voltage Source 5

2726

28

Green

Black

WhiteGround

Set Stat Input Jumper to 1.9 - 3.9 Vdc (J5)Set Stat Voltage Jumper (J6) to 12 VAC

0 - 10 VDC other thanArmstrong Standard Stat

Part No.C-1471orC-1472

0 - 10 VDCController

Stat In

Voltage Source 5

2726

28Ground

Set Stat Input Jumper to 0 - 10 Vdc (J2)

Stat In

Voltage Source

0 - 5 VDC Controller

4 - 20 mAController

5

2726

28Ground

Set Stat Input Jumper to 0 - 5 Vdc (J3)

Set Stat Input Jumper to 4 - 20 mA (J4)

0 - 5 Vdc Signal

4 - 20 mA Signal

Stat In

Voltage Source 5

2726

28Ground

Stat In

Table 14-1

Series GFHand GFH-DI

Series GFH andGFH-DI "DL" Dia.

Steam DispersionTube Length (mm)

Duct Width

Min. (mm) Max. (mm)

DL-1

2-3/8"(60 mm)

12" (305") 11" (279) 16" (406)

DL-1.5 18" (457) 17" (432) 22" (558)

DL-2 24" (610) 23" (584) 34" (863)

DL-3 36" (914) 35" (889) 46" (1168)

DL-4 48" (1220) 47" (1194) 58" (1473)

DL-5 60" (1524) 59" (1499) 70" (1778)

DL-6 72" (1829) 71" (7803) 82" (2082)

DL-7 84" (2134) 83" (2108) 94" (2387)

DL-8 96" (2438) 95" (2413) 106" (2692)

DL-9 108" (2743) 107" (2718) 118" (2997)

DL-10 120" (3048) 119" (3022) 130" (3302)

Figure 15-2

Figure 15-1

VoltageSource

26

27

28

24

25

A9023FanInterlockorPressureSwitch

5

6

4

A18609or

A186100-10VdcStat

(Standard)

A8581HighLimitHumidistat

5

StatOut

StatIn

Ground

Sail/Inter.

Ground

Note:AllSwitchesAreOpenonFaultType.SetVoltageSourceJumperto24VAC.SetJumperto0-10VDC

Control WiringWiringforlowvoltagecontrolsshouldnotruninsameconduitasthepowersupply.Useofshieldedwireoraseparatededicatedmetalconduitisrecommended.RefertoFigure15-1.

Control Humidistat1.Locatecontrolhumidistatwhereitwillsensetheaverage

airconditionofthespacetobehumidified.Avoidareasofrestrictedcirculationorlocationswherethesensorwillbesubjectedtodrafts,localizedheatormoisturesources.

2.Optionalductmountedhumidistatsareavailabletosensereturnorexhaustair,ifpreferred.

3.TheSeriesGFHiscapableofoperatingwithcontrolsignalsof 0-10Vdc,4-20mA,0-5VDCor1.9-3.9Vdc.SeeFig.15-1forlocationofswitchesandTable21-1forcorrectswitchsetting.RefertoFigures15-1and15-2forappropriatewiring.

4.WirestandardArmstrong0-10Vdchumidistatasshownin Figure15-1.

*Minimum of two tubes must be used.

Fan Interlock SwitchAfaninterlockswitchisrecommendedtodeactivatethehumidifierwhenthereisinsufficientairflowinaductsystem.Aductpressureswitchispreferredasafaninterlockdevice.Thepressureswitchshouldopenoninsufficientairflow(opensonfault).SeeFigure15-1forwiringterminalsandoverallwiringdiagrams.Completeinstallationandwiringinstructionsarecontainedintheductpressureswitchpackage.ArmstrongPressureSwitch:(ArmstrongPartA9023)AllPressureandelectricalconnectionsandsetpointadjustmentsareonsideforeachinstallation.Temperaturelimit:32°F.to180°F.Maximumsurgepressure:10psigRatedpressure:45"H2OPressureconnections:1/8"NPTOperatingrange:0.07to0.15"H2O

Installation a. Selectalocationthatisfreefromexcessivevibration,corrosiveatmosphereandwithintemperature limitations. b. Connectswitchfrompressuresourcewithtubing(1/4"O.D.isrecommended)tohighpressureport.The lowpressureportisleftopentoatmosphere.Note:Aboveprocedureisfordownstreamsideoffaninstallation.Forfansuctionsideinstallation,seeinstructionsaccompanyingswitch. c. Electricalconnectionstotheswitchareprovidedbymeansofscrewterminalsmarkedcommonand normallyopen.Thenormallyopencontactsclosewhenpressureincreasesbeyondthesetpoint. d. Completeinstructionsarecontainedinthepressureswitchpackage.Note: Limit switches (high limit and fan interlock switches) open on fault.

Alarm CircuitTheconnectionslabeledREMALMontheTB6connectoronPCboard,areconnectionsforaclassIINECalarmcircuit(switchclosureonly,1amp.maximum24Vdcor0.5amp.@125Vac).TheswitchwillclosewhentheerrororserviceLEDsareenergized.

16

StatVoltageJumperDefaultto24vAC

StatInputJumperDefault0-10vJ2

DrainFreqSF0DrainFreqSF1DrainFreqSF2

EOLTime0EOLTime1EOLTime2

DrainTimeSF0DrainTimeSF1DrainTimeSF2

D/AScale1D/AScale2ComAddr0ComAddr1

ProdTest/RunTest/Run

DS/Keypad

Figure 16-1

High Limit HumidistatAductmountedHighLimitStat(ArmstrongPartA8581)isrecommendedasaprecautionagainstlocalizedsaturationintheduct.Itisanon-offcontrollerthatopensthecontactonariseinhumidity(opensonfault).SeeFigure15-1forwiringterminalsandoverallwiringdiagrams.

Itshouldbemounted6to10feetdownstreamfromthesteamdispersiontube(seeFig.15-1).Thehighlimitstatmustbeupstreamoffilters,silencers,takeoffs,etc.sincethesedevicescanreduceducthumidityandpreventthehighlimitstatfromdoingitsjob.CompletemountinginstructionsarecontainedintheHighLimitStatpackage.

17

Gas Fired Outdoor Enclosure OptionTheSeriesGFHEunitisintendedtobeusedwherethegasfiredunitwillneedtobemountedoutdoors.Site Selection:Providealevel,solidfoundationforthehumidifier.Inthecasewheretheunitwillbemountedonacurb,

verifyagasketwillbeusedbetweenthecurbandtheGFHEunittoprotectagainstmoistureenteringthebuilding.Iftheunitwillbemountedonpouredconcretepad,verifythepadwillproperlysupporttheunitandallsupportpointdimensionsareaccurate.

TheGFHEwasintendedtoonlybemovedeitherbyaforkliftusingtheskidtheunitwasshippedon,orbyliftingthehooksprovided.

Ifbeingmovedbyaforklift,withskidinplace,makesuretheforksextendtheentirewidthoftheunit. Forksthatdonotextendtheentirewidthcouldcausetheunittotip,whichcouldcreateanunsafe movingsituationorcouldcausetheunittobedropped,causingpermanentdamagetotheunit.

Iftheunitistobeliftedusingtheliftinghooks,aloadspreadermustbeused.Theloadspreadershallbewideenoughtoensuretheliftingcablesclearthesidesoftheunits.Theloadonthecablesshouldbedistributedforevenlifting,preventingtheunitfromtipping.

Verifyallframeandsupportboltshavenotloosenedduringshipping.

Thehumidiershouldbemountedinalocationwhereallpanelscanbeeasilyaccessibleandremovedifrequiredforservicing.

Thehumidifiershouldbelocatedinanareawherethefreshairinletsarenotclosetoanyother exhaustsystems,orinanylocationwherepotentiallyflammablevaporsorliquidscouldbetakeninto thecombustionchamber.

Removeunitfromshippingskidpriortolocatingfinalpositionofunit.

Pleasecheckdrawingsbelowforparticularmodelnumberstolocateallutilityknockoutlocationsin outdoorenclosureforallutilitiesandfluepiping.Usetheappropriateplugsorknockoutsforeach utilityrequired.Intheeventanyutilitypipingneedstoberunthruthebottomoftheunit,allholeswill havetobesealedaroundthepiping.Thebottomoftheunitisalsousedasthedrainpan.

Allwaterlinesshouldberuntoeliminatethepossibilityoffreezing,andshouldbeinsulated.

Combustionairintakesarelocatedontheaccesspanels.Intheinstanceasealedcombustion packageisused,verifyallconnectionsaresecureandfilterisinpalceintheinletfilterbox.Air intakesshouldbepositionedtoavoidhavingnaturalairflowblowingdirectlyintotheairintakes.

Verifyfilterisinplaceforelectronicscabinetairintake.

Iftheunitwasprovidedwithoptionalfactoryinstalledsealedcombustionkit,verifyallclampsand connectionsaresecure.

InenvironmentswheretheGFHEunitwillbeexposedtoextremecoldconditions,anoptionalheater packagecanbeprovided.Iftheheaterpackageisinstalled,therewillbetwonon-adjustablethermo statsfactorypre-settoenergizetheheatersiftheambienttemperatureinthecabinetfallbelow60F. Theheaterswillstayenergizeduntiltheinternalcabinettemperaturesreach75F.

Externalfluepipingwillbefiledinstalled,andsuppliedbyinstallingcontractor.Fluepipingcanbe installedoneithersideoftheunit(seedrawingsonpages18-21).Consultlocalcodesforexactflueheightrequirements.B-Venttypepipingwillbeacceptableforalltheoutdoorenclosureunits.

Anoptionalcurbpackagecanbeprovidedwiththeunit.Pleaseconsultfactory,oryourlocalArmstrongSalesRepresentativeformoreinformation.

Gas Fired Roof Installation

18

Air

Han

dlin

gU

nit

Steam

DispersionPiping

Ven

t

LiftRings

Emergency

Dra

in

Wat

er

Gas

Lin

e

Electrical

Wiri

ng

GFHE 150 Outdoor Enclosure

19

FluePiping

Access

FluePiping

Access

Com

bustionAir

Inta

ke V

ent

Rem

ovable

AccessDoor

Waterand

ElectricInlet

Gas

Lin

e In

let

Emergency

Dra

in

Exhaust

Ven

t

Electronics

AccessDoor

Air

Inta

ke V

ent

forE

lectronicsLid

61"

(1550mm)

66-1/8"

(1680mm)

31-5/32"

(791mm)

28-5/8"

(727mm)

62"

(1575mm)

Rem

ovable

AccessDoor

Steam

Outlet

Access

Steam

Outlet

Access


20

44-3

/8"

(105

2 m

m)

61"

(154

9 m

m)

66-1

/8"

(168

0 m

m)

41-7

/8"

(106

4 m

m)

62"

(157

5 m

m)

Flu

e P

ipin

gA

cces

s

Air

Inta

keV

ent f

orE

lect

roni

cs

Lid

Ste

am O

utle

tA

cces

sE

lect

roni

csE

xhau

st D

oor

Exh

aust

Ven

t

Em

erge

ncy

Dra

in

Rem

ovab

leA

cces

s D

oor

Gas

Lin

e In

let

Wat

er a

ndE

lect

ric In

let

Ste

am O

utle

tA

cces

s

Rem

ovab

leA

cces

s D

oor

Com

bust

ion

Air

Inta

ke V

ent

Flu

e P

ipin

gA

cces

s


21

57-5

/8"

(146

5 m

m)

66-1

/8"

(168

0 m

m)

61"

(155

0 m

m)

55-1

/8"

(140

0 m

m)

62"

(157

5 m

m)

Lid

Flu

e P

ipin

gA

cces

s

Ste

am O

utle

tA

cces

s

Ele

ctro

nics

Acc

ess

Doo

r

Air

Inta

ke V

ent

for

Ele

ctro

nics

Exh

aust

Ven

t

Em

erge

ncy

Dra

in

Com

bust

ion

Air

Inta

ke V

ent

Gas

Lin

e In

let

Rem

ovab

leA

cces

s D

oor

Wat

er a

ndE

lect

ric In

let

Ste

am O

utle

tA

cces

s

Rem

ovab

leA

cces

s D

oor

Com

bust

ion

Air

Inta

ke V

ent

Flu

e P

ipin

gA

cces

s

22

Start Up ProcedureOnly qualified personnel should perform start up procedure.1. Examinetheelectricalcompartmentforanylooseordisconnectedcomponent

wiring.Checktomakesureallofthecontrolwiringhasbeencompletedandbeendonecorrectly.

2. Removethetopcoveroftheunitbyunscrewingthescrewsholdingthelidinplace.MakesurealloftheIonicBedsarefastenedsecurelytomountingpins.Makesuregasketisinproperpositionthenreplacetopcover.

3. Checkandre-checkincomingvoltagesourceandcontrolwiringforproper connectionsandtightnessofconnections.Verifythewiringhasbeendoneinaccordancewithlocalcodesandtheenclosedwiringdiagram.

4. Turnonwaterandcheckforleaks.

5. Turnongassupplyandverifythatallgaspipinghasbeencheckedforleaks.(Soapywaterisnotrecommendedforuseinsidethecontrolcabinet.)

6. Makesureaccessdoorsandpanelsaresecure.

7. Powerupunitatbreaker.VerifySteamGenerationswitchisin"ON"positionSeeFigure22-1.

8. Theunitwillbegintofill.Whenthewaterlevelreachesthelowlevelcontrolelectrodetheunitwillperformitsprecombustionchecks.

9. Aftertheprecombustionchecksaredone,theunitwillrunat100%foraperiodof5minutes.

10. Duringthis5minuteperiod,theburnermustbeadjustedforproperoperation.(100%BurnerOutput)

11. Iftheunitisnotproperlyadjusted,theunitmaynotoperateproperly.

12. AcombustionanalyzercapableofdetectingtheCO2levelofthecombustiongasseswillberequired.CombustioncheckswillbedoneattheoutletoftheventpipeoftheGFH-150orthe1/8"NPTplugsonthetopofthecollectionboxoftheGFH-300orGFH-450.SeeFigure22-3.

13. ThetargetfortheCO2levelwillbedependent onthetypeofgasused.IfNaturalgasisbeingused,theproperCO2levelwillbebetween8.5-9.5%.ForLPoperation,theCO2levelwillneedtobeadjustedbetween10-11%.

14. TurningtheadjustmentscrewintheclockwisedirectionwilldecreasethelevelofCO2,andturningthe adjustmentscrewcounter-clockwisewillincreasetheCO2level.

15. Aftertheunithasbeenproperlyadjusted,andthe5minutewarm-upperiodexpires,theunitwillgointonormaloperation.

Figure 22-1

UnitDiagnostic

Power

SteamGeneration

Error

ServiceLife

Gas Fired Humidifier

Master ResetSteamOff&TankDrain

OnOn

SteamGeneration

U.S. Patent No's 5 337 703� 6 070 559

Figure 22-2

LocationofAdjustmentScrew

Figure 22-3

1/8"Hole

Top View Vent

1/8"Hole 1/8"Hole

23

Principal of OperationTheGasFiredHumidiCleanhumidifierconvertsordinarytapwaterorpurifiedwatertosteamfordistribution

toraisetherelativehumiditylevel.Thedemandforhumidityissensedbyahumidistat,whichsendsacontrolsignaltotheGasFiredHumidiClean.

Whenpowerisinitiallysuppliedtotheunitfromthecircuitbreaker,allLEDswillilluminatefor5seconds.The

“POWER”LEDwillremainonandtheunit’sfillvalvesolenoidisenergizedtoallowwatertoenterthetankatarateof3gal/min.Note:Ifthewaterlevelinthetankisabovethelowwaterlevelwhenpowerisapplied,thedrainvalvewillbeenergizedtodrainthewaterbelowthelowwaterlevel.

Oncethewaterlevelinthetankhasreachedthelowwaterswitch,theunitwillmakesureallofitssafetycircuitsaresatisfied.The“STEAMGENERATION”LEDwillthenenergize,andtheunitwillinitializeitsprecombustionchecksandignite.

Thewaterfillsolenoidcontinuestobeactivateduntilthewaterlevelinthetankhasenergizedthehighwater

switch.Note:IffillordrainvalvesarenotenergizedwhenpowerisfirstappliedcheckdisplayLEDsfordiagnosticcode.SeeDIAGNOSTICSsection.

Theradiantburnerwillremainonfor5minutestopreheatthewaterinsidethetank. Afterthe5minuteheat-uptime,theGasFiredHumidiCleanwillcontinuetoproducesteambasedonthe

demandsignalfromthehumidistat.Ifthedemandsignaldropsbelow2%orthehighlimit/sailswitchcircuitopens,theburnerwilldisengageandthe“STEAMGENERATION”LEDwillturnoff.Note:Ifthehumidifiershutsoffduetolowhumidistatdemand,ademandsignalof20%orgreaterisneededtore-lightandturnonthe“STEAMGENERATION”LED.

TheGasFiredHumidiCleanwillproducesteamcontinuouslyandrefillthetankwithwaterwhenthelowwater

levelisreached.Thesefillintervalswillbestartedasdefinedinthesoftwareoftheprintedcircuitboardandbeshutoffbythehighwaterswitch.

ThePCBoardgeneratesaPulseWidthModulated(PWM)signalandsendsthissignaltotheburnerpackage

toachieveamodulatingoutputbasedonthesignaldemandfromthehumidistat. AstheGasFiredHumidiCleancontinuestoproducesteam,theunitwillaccumulateandmemorizethesteam

generationtimeforthepurposeofdefiningadraincycleandservicelife(thismemoryisnotaffectedbypoweroutages).WhentheGasFiredHumidiCleanburnerhasaccumulatedthesteamgenerationtimesetbythedrainfrequencyDIPswitchsetting,theunitactivatesthedrainsolenoidandbeginsdrainingthetank.Whenthewaterleveldropsbelowthelowwaterelectrode,theburnerwilldisengage.Theprintedcircuitboardcontrolsthedraincycleandcanbefieldmodified.SeeDIPSwitchSettingsSection.Oncetheunithastimedoutofthedraincycleandalloftheswitchesarestillinpositiontogeneratesteam,thewaterfillsolenoidswitchisactivatedtofillthetankandthecyclestartsoveragain.

Completing a Service Life Cycle Whenthe90%oftheselectedservicetimehasaccumulated,the“SERVICELIFE”LEDonthecontrolpanel

willstarttoflash(blinkonandoff).SeeDIPSwitchSettingsSection.ItwillcontinuetoproducesteamondemandfortheremainingServiceLife.Duringthesehoursofoperation,theGasFiredHumidiCleanwilldisplayaflashing“SERVICELIFE”LED.After100%oftheselectedServiceLifehasaccumulated,inhoursofsteamgeneration,theunitwillshutdownbydrainingthetankasdescribedaboveandnotrespondtoanycallforhumidity.

End of Season DrainIfatanytimeduringnormaloperationthereisnotademandforhumidityforacontinuous72hourperiod,

theGasFiredHumidiCleandrainsthetankandthePCBoardinitiatesadryingcyclebycyclingtheheatexchangerforshortintervalsinordertodrytheionicbeds.

Iftheunitistobemanuallyshutdownforendofseasonservice,theservicetechnicianshouldmanuallydraintheunitbyremovingthe2”NPTplugfromthedriplegofthetank,removethebeds,andphysicallydrythetank.

24

MaintenanceCaution:Labelallwirespriortodisconnectionwhenservicingcontrols.Wiringerrorscancauseimproper

anddangerousoperation.Properoperationmustbeverifiedafterservicing.

Whenservicingorreplacingcomponents,useonlyArmstrongapprovedreplacementparts.PleasecontactArmstrongdirectly,oryourlocalArmstrongRepresentativeforacompletepartslist.AnysubstitutionofpartsorcontrolsnotapprovedbyArmstrongInternational,Inc.isattheowner’srisk.

1. Ventconnectorandchimneyshouldbeinspectedfornoblockages.

2. Theventpipeshouldbeinspectedforproperpitchandsupport.Alljointsoftheventpipeshouldbe inspectedtoverifytherearenoleaks.

3. Burnerflameshouldbeinspectedforvisualcombustion.Theburnerwillburnblueandorangeonthesurfaceoftheburner.Iftheflameisvisuallyinspectedandisnotinorder,pleasecheckcombustionwithacombustionanalyzerandadjustburnerpackageasdescribedintheStart-UpSection.

Burnershouldbecheckedatleastannuallywhenusedinareaswherehighquantitiesofairborneparticlesmayplugtheairpassagesthroughthesurfacematrix.Tocheckforproperfieldoperationoftheburner,measuretheCarbonMonoxide(CO)levelofthefluegasses.IftheCOlevelmeasured(Insertacceptablelevelhere)inthefluegassesisaboveacceptablelevelstheburnersystemshouldbeserviced.PleaserefertoMaintenanceSectionforproperserviceofBurnerAssembly.

4. Verifytherearenosignsofvisualdegradation.

Recommended Inspection ScheduleTheunitshouldbevisuallyinspectedevery30daysofoperationforvisibleproblems.Aqualifiedservicepersonshouldinspectallaspectsoftheinstallationatleastonceayear.Theinspectionshouldcover:

Replacing the Ionic BedsTheGasFiredHumidiCleanisdesignedtobevirtuallymaintenancefree.AsstatedinthePRINCIPLEOFOPERATIONsection,aftertheGasFiredHumidiCleanhasaccumulated90%oftheselectedServiceLife,inhoursofheaterontime,the“SERVICELIFE”LEDwillflash(blink).Atthistimetheionicbedsinthetankshouldbereplaced.Ifserviceisnotperformed,theunitwillcontinuetooperatefortheremaininghoursbeforeshuttingdowncompletely.Note:ServiceLifecanbeadjustedbasedonwaterquality.IfIonicBedsarerelativelyfreeofscaledepositsorscaleisformingontankwallsandheatexchangerbecausebedsaresaturatedwithscale,PleaseconsultthefactoryforServiceLifeadjustmentprocedures.

1. Turnoffsteamgenerationswitchandallowunittocompleteadeepdrain.

2. Shutoffelectricalpoweratcircuitbreaker,thenclosethegasshut-offvalve.

3. Caution:Tankwillstillbequitewarmandshouldbeallowedtocool.

4. Disconnectsteamdistributionpiping,unlatchandremovelid.

5. Unsnapionicbedsfromsupportpinsandliftthemout.

6. Inspecttankdrainscreenandheatexchangerinsidethetank.Ifthedrainscreenappearstobebuildingdepositsinthescreenholesitshouldberemovedandcleaned.Removeanyflakesthatappearinthebottomofthetank.

7. Theheatexchangershouldbedescaled.Thiscanbeaccomplishedbyscrapingthescalefromthe exchanger,orbychemicallyremovingthescale.Muriaticacidcanbeused,followmanufacturer’s instructionsonthelabeloftheacid.

25

8. Armstrongalsooffersanon-causticcleaningsolutioncalledRite-Quick.PleasecontactArmstrong,oryourlocalArmstrongRepresentativeformoreinformation.

9. Installnewionicbeds,snappingthemintoplaceonthesupportpins.

10.Besurelidgasketislappedoveralledgesoftankaccessopening.Replaceandsecurelid.

11. Turnonpoweratcircuitbreaker,thenopengasvalve.

12.Depressandholdintheresetbuttonfor20seconds.AlltheLED’swillblinktogetherindicatingthe accumulatedhoursmemoryhasbeenresettozero.Theunitshouldstarttofill.NOTE: Theaccumulated

timememorycanonlyberesettozerowhentheserviceLEDisblinkingoronsolid.

ToBottomofTank

ElectrodeLevelContainer

CommonElectrodeProbe(NoReducingBushing)

LowLevelElectrodeProbe

High WaterElectrodeProbe

ToTopofTank

ReducingBushing

Figure 25-1

Modify the Bed Life Setting1. Completethestepsforservicingtheunitasoutlinedabove.2. Theunitmustrunforatleastanhour.3. Powertheunitdown.4. SetthedipswitchestothedesiredEOLsettings.SeePage29fortableofdipswitchsettings.5. Powertheunitup.ThenewBedLifeSettingswilbeset.Note:Ifthedipswitchesareresetpriortothecompletionofsteptwo,theunitcouldlockup.ThepowerofLEDwillbelit,buttheunitwillnotrespondtoanyinput.Ifthisisthecase,thefollowingstepsmustbetakentorestoretheunittoproperoperation.a. Powertheunitdown.b. Resetthedipswitchestotheprevioussettingsasrecorded(Factory DefaultsareGFH-150,GFH-300+ GFH-450=500hours).c. Powertheunitupatbreaker.d. Pressandholdthe"RESET"buttontoresettheEOLtime.Thismustbeheldforatleast20seconds.e. Allowtheunittorunforatleastanhour.f. Powertheunitdownatbreaker.g. Setthedipswitchestothedesiredsettings.SeePage29forthedipswitchsettings.h. Powertheunitatbreaker.

Cleaning the Water Level Electrodes1. Ifthereiswaterinthesteamgeneratingtank,turntheSteamGenerationswitchtooff,andcompletely

drainthetank.

2. Afterthetankhasdrained,turnoffthemainpoweratthe

disconnectandclosethemaingasshut-off.

3. Unclampandremovethe5/8”IDSiliconetubingfromthetopoutletofthelevelcanister.

4. Disconnectwiresfromtheprobes,notingtheprobeandwirelocations.Note:LevelcontrolfloatswitchesareusedforDI,RO,orverypurewater.Cleaningshouldnotberequired.

5. Unscrewtheprobesfromthelevelcanisterusingthehexnutfittingontheprobe(Note:Levelcanisterbushingsmayberemovedwiththeprobes,if necessary).

6. Useawirebrush,wirewheel,orsimilarmeanstocleanscaledepositsoffthestainlesssteeltipoftheprobe.CleaningoftheTefloninsulatingjacket(whiteportion)shouldnotbeneeded.

7. Inspecttheinteriorofthelevelcanister.Iflargeamountsofscaleordebrisarepresent,removethecanisterfromthecabinetbyremovingthetwoclampingbracketscrewsanddisconnectingthe5/8”IDSiliconehoseatthebottomofthecanister.Flushthecanisterwithwatertoremovedebrisandreinstall.

26

8. Reinstalltheprobesandprobewiresintheirproperlocations.Thehighwaterprobe(shortest)goesintherightholeofthecanister.Thelowwaterprobe(mediumlength)goesintheleftfrontholeofthecanister.Thecommonprobe(longest)goesintheleft,rearholeofthecanister.

9. Reconnectthe5/8”IDSiliconehose(s).

Burner / Heat Exchanger AssemblyTocheckforproperfieldoperationoftheceramicradiantburner,measurethecarbonmonoxide(CO)ofthefluegassesat100%demand.IftheCOlevelmeasuredinthefluegassesisaboveacceptablelevels(greaterthan60ppm)refertoFigure22-3forpropercheckpoints,theburnersystemshouldbeserviced.

1. Theblowermotorhasnolubricationpoints,thereforemotorlubricationisnotrecommended.

2. TurntheSteamGenerationswitchtotheoffpositiontodrainthetankcompletely.

3. Turnoffgas,electricity,andwatersupplytotheunit.

4. Usingavacuum,removealldustfromthecontrolcabinetarea,andblowerassembly.

5. Disconnectthegaspipinggoingtothegasvalve.

6. Disconnectwiringharnesstotheblowerassembly.

7. Unplugwirestoblowerandpressureswitch.

8. Unplugflamedetectionrodandigniterwiresfrommodule.

9. Removethe4boltsholdingtheblowerassemblytotheheatexchangerandremovetheburnerassembly.

10.Usea6”fluebrushwitha28”extensionandareversibledrill.Workbrushinandoutofthefiretube.Usingavacuumwithanextension,removedepositsfromfiretube.

11. Toservicetheburnersystem,cleanboththeblowerandburner.Removetheblower(s)fromthesystemandcleandustfromthefanwheel.

12.Removetheburnerforcleaning.Dislodgeparticulatematterfromtheburnersurfacematrixbyusingcompressedair.Keeptheairnozzleabout2”fromtheburnersurfaceblowingstraightdownonthesurfacewhilemovingthenozzlebackandforthlengthwiseabovethesurface.Thisdislodgesparticlestrappedinthematrixbypushingthembackinsidetheburner.

13. Avoid blowing air tangentially across the surface since this tends to have a destructive effect to burner surface.

14. WARNING: personnel performing this maintenance should wear appropriate respiratory protection

to avoid inhaling loose refractory ceramic fibers.

15.Allowparticulatemattertofallfromburnerthroughtheair/gasinlettoassistinremovingtheparticulatematter.

16.Avacuummaybeusedattheair/gasinlettoassistinremovingtheparticulatematter.

17.Re-assembletheburner–blowersystem.

18.Re-installgasket,andburnerassemblyintoheatexchanger.Inspectionofthegasketwillberequiredtodetermineifoldgasketcanbeused,orshouldbereplaced.

19.Re-connectgassupplyline,turngasonandcheckforleaks.

20.Re-connectallcontrolwiring

21.ApplypowerandturnSteamGenerationswitchtoONposition.

22.VerifynormaloperationoutlinedinStart-UpSection.

27

1. TurntheSteamGenerationswitchtotheoffpositiontodrainthetankcompletely.

2. Tunoffgas,electricityandwatersupplytotheunit.

3. Usingavacuum,removealldustfromthecontrolcabinetarea,andblowerassembly.

4. Disconnectthegaspipinggoingtothegasvalve.

5. Disconnectwiringharnesstotheblowerassembly.

6. Unplugwirestoblowerandpressureswitch.

7. Unplugflamedetectionrodandifniterwiresfrommodule.

8. Removethe4boltsholdingtheblowerassemblytotheheatexchangerandremovetheburnerassembly.

9. Disconnectsteamdistributionpipingfromlidofunit,andremovelidfromunit.

10. DisconnectVentpipingfromexhaustnipple,orexhaustcollectionbox.

11. Removeeitherexhuastnippleorexhaustcollectionboxbyremovingalltheboltsholdingitinplace.Careshouldbetakennottodamagethegasket.

12. Removethe12boltsholdingthefrontoftheheatexchangerinpalce,andremoveanyadditionalboltsholdingtheexhaustendoftheheatexchangerinplace.

13. Carefullylifttheheatexchangerfromthesteamgenerationchamber.

14. Thenewheatexchangerwillshipintwogaskets(shippedloose)fortheinletandexhaustconnectionsoftheheatexchanger.Removeadhesivestrips,andinstallgasketsonappropriatesurfacesoftheheatexchanger.

15. Carefullylowertheheatexchangerintopositioninthesteamchamber.

16. Installallrequiredboltsintopostitioninboththeinletandexhaustsidesoftheheatexchanger.InthecaseoftheGFH-150,theexhaustnipplemustbeinstalledpriortoboltingtheexhaustendoftheheatexchanger inplace.

17. Snugall12boltsontheinletsideoftheheatexchanger,andall8boltsontheexhaustendoftheheat exchanger.

18. UsingFigure27-1torqueallboltsto50in-lbintheordershown.Usingthesametorquepattern,continuetotorquealltheboltstotheinal70in-lbtorquerating.

19. VERIFYALLBOLTSGETTORQUEDPROPERLYONBOTHTHEINTAKEANDEXHAUSTENDSOFTHEHEATEXCHANGER.

20. Replacetheexhaustcollectionbox.Thegasketusedbetweenthetankandtheexhaustcollectionboxdoesnothaveadhesivegasket,socarewillhavetobetakentomakesurethegasketisinproperplace.

21. Re-connecttheexhaustventpipingtoexhaustcollectionbox,orexhaustnipple.

22. Re-installsteamchamberlid,andre-connectsteamdistributionpiping.

23. Re-installgasket,andburnerassemblyintoheat exchanger.Inspectionofthegasketwillberequiredifoldgasketcanbeused,orshouldbereplaced.

24. Re-connectgassupplyline,turngasonandcheckforleaks.

25. Re-connectallcontrolwiring. 26. ApplypowerandturnSteamGenerationswitchtoON

position.

27. VerifynormaloperationoutlinedinStart-UpSection.

Removing / Replacing Heat Exchanger

8 10 12 1

3

5

79112

4

6

2 7 5

3

186

4

Figure 27-1

28

Troubleshooting

1 Blink - Thelowlevelswitchdidnotcloseinsetfilltime.

Check - Defectivefillvalve,debrisinfillvalveinletscreenorlinetolevelcontainer,waterleakagefromtankortubing,lowornowaterpressure,drainvalvestuckopenorleaking,defectivelowwaterlevelswitch(electrodesneedcleaning).

2 Blinks - Thelowlevelswitchhasnotclosedin3minutesoffillcycletime.

Check - Debrisinfillvalve,nowaterfloworlowwaterpressure,drainvalveleakingorstuckopen,defectivelowwaterswitch(electrodesneedcleaning).

3 Blinks - Thehighlevelswitchdidnotclosebycompletionofinitialfill.

Check - Defectivefillvalve,debrisinfillvalveinletscreenorlinetolevelcontainer,waterleakagefromtankortubing,lowornowaterpressure,drainvalvestuckopenorleaking,defectivelowwaterlevelswitch(electrodesneedcleaning).

4 Blinks - Thehighwaterswitchisstillclosed5minutesafterhittinghighlevel.

Check - Fillvalvestuckopen,defectivehighlevelswitch,debrisinlevelcontainer.

5 Blinks - Thehighlevelswitchisclosedandthelowlevelswitchisopen.

Check - Defectivelevelswitch(es),loosewiretolevelswitches,scaleonelectrodes.

6 Blinks / 7 Blinks / 8 Blinks -Ignitionburner#1error/Ignitionburner#2error/Ignitionburner#3error

Check - Gasmaybeturnedofftotheunit,defectiveigniter,loosewirefromignitionmoduletoigniterorflamesensingrod.(OnlyappliestounitswithsoftwareGFH150.HEX,GFH300.HEX,GFH450.HEX)

9 Blinks - Thelowlevelswitchhasnotopenedafterasetdrain.

Check - Defectivelowlevelswitch,defectivedrainvalve,debrisinlevelcontainertubingordrainvalve.

10 Blink / 11 Blink / 12 Blink - Theblower/burner#1/#2/#3isnotoperating.

Check - Nopowertoblower,loosewiretoblower,orlossoftachsignal.

13 Blinks -Thesafetylowprobeisopen.Check - Defectivelowwaterlevelswitch, electrodesneedcleaning,loosewireto probe,debrisinlevelcontainer.

14 Blinks -Theexhaustpressureswitchisopen.Check - Blockedexhaustflue,loosewireto pressureswitch

15 Blinks - E2Error-corruptedsoftwaredata.Check - Resetunit,regeneratepower.ResetE2

16 Blinks -Aquastaterror,stuckopen.Check - Forlooseordisconnectedwireto aquastatsettingistoohigh.

*Power loss to unit due to stack over temperature situation -Theovertemperaturemodulecutsout.Check - Forlowwatersituation,levelcontrol electrodesforscalebuildup,looseor disconnectedwirefromprobetomodule.

DiagnosticsTherearesomediagnosticroutinesprogrammedintothePCboard.Iftheseroutinesdetectaproblemtheunitwillshutdownandflashthe“ERROR”LEDacertainnumberoftimes,followedbyalongpause.

Table 28-1

PowerSteam

Generator Error

Service Life

LED #5

Definition

S Unit operational and is filling, draining or has no call for demand.

S Unit is operating and the gas is on.

S B S High humidity/sail switch is open, will not operate until closed.

S B Unit has run for over 90% of bed life, will operate until 100%.

S S Unit has accumulated 100% of bed life, will not operate until reset.

S 1B Fill timeout to low level during initial fall.

S 2B Water level drop below low level during basic operation.

S 3B Fill timeout from low to high level.

S 4B Water level above high level timeout.

S 5B Illegal switch state.

S 6B / 7B / 8B Ignition burner #1 error / ignition burner #2 error / ignition burner #3 error.

S 9B Low level not dropped below during empty drain.

S 10B / 11B / 12B Blower/burner #1 error / blower/burner #2 error / blower/burner #3 error.

S 13B Safety low probe open.

14B Pressure switch error.

15B E2 Error Corrupted Software

16B Aqua Stat Error

Power dropped out.*

S - Solid On B - Blinking On (Flashing)

29

Dip Switch Settings / Jumpers / Toggle SwitchesThereisabankofDIPswitchesonthetopedgeofthePCboard.Thedrainfrequencyandduration(draintime)andtheServiceLifetimesettingcanbemodified.Severalotherparametersarealsoadjustable.ThemainpowermustbeturnedoffbeforetheDIPswitchesarechanged.SeechartbelowforacompletelistingofDIPswitchsettings.PleaseconsultfactoryifunsureregardinganyDIPswitchsetting.SeeFig.16-1onpage16forlocations.

Clearing Error CodesAftertroubleshooting,theerrorstatemustbeclearedbydepressingtheresetbuttonfor10seconds.AlltheLED'swillthenflash.Releasetheresetbuttonandtheunitshouldresumenormaloperation(itwillfillordraintogettothelowlevelswitchthenfilltothehighandbeginboiling).Turningtheunitonandoffwillnotclearmostoftheerrorstates.

White-Rogers Gas Control Board DiagnosticsWhentheunitexperiencesaburnererrortheWhiteRogersboardwillshowblinkcodeinthebottomlefthandcorneroftheboardintheformofaredLED.Theblinkcodewillonlyshowfor2minutesaftertheunithasgoneintoerror.Eachflashwilllast0.25secondsandeachpausewilllastapproximately2seconds.1Flash,thenpause........................Systemlockout2Flashes,thenpause....................Pressureswitchstuckclosed3Flashes,thenpause....................Pressureswitchstuckopen6Flashes,thenpause....................115VoltACpowerreversed7Flashes,thenpause....................Lowflamesensesignal8Flashes,thenpause....................CheckigniterorimpropergroundingContinuousflashing,(nopause).....Flamehasbeensensedwhennoflameshouldbepresent(nocallforheat)TheLEDwillalsoflashonceatpower-up.

Table 29-1. Circuit Board Dip Switch SettingsDip Switch 1 Parameter

Drain On Time 2 Min. 5 Mins. 10 Mins. 15 Mins.

SB1-1 (2)Drain Time

Not UsedSB1-2 (1) Off Off On OnSB1-3 (0) Off On Off On

End Of Life 500 Hrs. 1000 Hrs. 2000 Hrs. 3000 Hrs.SB1-4 (2)

End of LifeNot Used

SB1-5 (1) Off Off On OnSB1-6 (0) Off On Off On

Drain Frequency 1 Hr. 4 Hrs. 12 Hrs. 24 Hrs.SB1-7 (2)

Drain Frequency

Not UsedSB1-8 (1) Off Off On OnSB1-9 (0) Off On Off On

Dip Switch 2 ParameterDS / Keypad

SB2-1 Keypad Not UsedProduction Test

SB2-2 Test / Run Off = Run On = TestSB2-3 Prod Test / Run Off = Run On = Test

Comm. AddressSB2-4 (1)

Comm AddressNot Used

SB2-5 (0) Not UsedD/A Scale

SB2-6 (2) D/A Scale 2 Not Used

SB2-7 (1) D/A Scale 1 Not Used

Voltage Source (J2) 5 Vdc Supplies 5 Vdc to Voltage Source terminal on low voltage term. strip 24 VAC Supplies 24 VAC to Voltage Source terminal on low voltage term. strip 12 VAC Supplies 12 VAC to Voltage Source terminal on low voltage term. strip

Stat Input Set Jumper According to Stat Input J3 1.9 - 3.9 Vdc Stat Input J4 4 - 20 mA Stat Input J5 0 - 5 Vdc Stat Input J6 0 - 10 Vdc Stat Input Manual Switches Manual Switch Actuates: (Normal position is Up, Down to Activate)

SW-1 Fill Valve

SW-2 Drain Valve

SW-3 Temper Valve (Not Used)

30

115V System Ladder Schematic

31

Outdoor Enclosure UnitsSystem Wiring Schematic

32

System Wiring Schematic

33

System Wiring Schematic

35

Item Number Part Number Description

1 A21583 Drain Valve

2 A21582 Fill Valve

3 C4559 Liquid Level Canister

4 B5139 Float Switch - DI

5 B5135 Bracket, Liquid Level

6 B2960 Low Level Safety Probe

7 C5389 PC Board w/Stand-Offs

8 B5140 LED Board

9 B6624 Transformer 120/240v

10 C5379 Ignition Control Module

11 A22908 Over Temperature Board

12 A9012 Reset Rocker Switch

13 A9104 On/Off Rocker Switch

14 B2414-3 Terminal Block

15 A8649 Fuse Block

16 A10718 3 AMP Fuse

17 A22460 Burner Assembly Repair Kit

18 A22459 Blower Repair Kit

19a A22457 Gas Valve Assy w/ Gasket (Natural)

19b A22458 Gas Valve Assy w/ Gasket (Propane)

20 C5379 Ignition Control Module

21 A22449 Flame Detection Rod Repair Kit

22 A22450 Surface Igniter Repair Kit

23 A22053 Blower Pressure Switch

24 C5120 Ionic Bed

25

D3824 Lid Gasket - Front - GFH-150



26 D3827 Lid Gasket Side - All Units

27 A21998 Exhaust Gas Thermocouple

28 A22027 Gasket Thermocouple

29 A22055 1/2” NPT Manual Gas Valve

30

C5437 Sealed Combustion Kit for GFH-150



31 D4463 Heat Exchanger for GFH units (Need C5803 and C5804 Gaskets)

GFH Series Gas Fired HumidiCleanParts List

Armstrong Humidification Group

816 Maple Street, P.O. Box 408, Three Rivers, Michigan 49093 - USA Ph: (269) 273-1415 Fax: (269) 273-9500

Steam Traps \ Humidifiers \ Steam Coils \ Valves \ Air Vents \ Pumping Traps \ Water Heatersarmstronginternational.com548-D 05/2010 Printed in U.S.A.

Armstrong International, Inc.Limited Warranty and Remedy

ArmstrongInternational,Inc.(Armstrong)warrantstotheoriginaluserofthoseproductssuppliedbyitandusedintheserviceandinthemannerforwhichtheyareintended,thatsuchproductsshallbefreefromdefectsinmaterialandworkmanshipforaperiodofone(1)yearfromthedateofinstallation,butnotlongerthan15monthsfromthedateofshipmentfromthefactory,[unlessaSpecialWarrantyPeriodapplies,aslistedbelow].Thiswarrantydoesnotextendtoanyproductthathasbeensubjecttomisuse,neglectoralterationaftershipmentfromtheArmstrongfactory.ExceptasmaybeexpresslyprovidedinawrittenagreementbetweenArmstrongandtheuser,whichissignedbybothparties,ArmstrongDOES NOT MAKE ANY OTHER REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

ThesoleandexclusiveremedywithrespecttotheabovelimitedwarrantyorwithrespecttoanyotherclaimrelatingtotheproductsortodefectsoranyconditionoruseoftheproductssuppliedbyArmstrong,howevercaused,andwhethersuchclaimisbaseduponwarranty,contract,negligence,strictliability,oranyotherbasisortheory,islimitedtoArmstrongsrepairorreplacementofthepartorproduct,excludinganylabororanyothercosttoremoveorinstallsaidpartorproduct,oratArmstrongsoption,torepaymentofthepurchaseprice.AsaconditionofenforcinganyrightsorremediesrelatingtoArmstrongproducts,noticeofanywarrantyorotherclaimrelatingtotheproductsmustbegiveninwritingtoArmstrong:(i)within30daysoflastdayoftheapplicablewarrantyperiod,or(ii)within30daysofthedateofthemanifestationoftheconditionoroccurrencegivingrisetotheclaim,whicheverisearlier.IN NO EVENT SHALL ARMSTRONG BE LIABLE FOR SPECIAL, DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING, BUT NOT LIMITED TO, LOSS OF USE OR PROFITS OR INTERRUPTION OF BUSINESS.TheLimitedWarrantyandRemedytermshereinapplynotwithstandinganycontrarytermsinanypurchaseorderorformsubmittedorissuedbyanyuser,purchaser,orthirdpartyandallsuchcontrarytermsshallbedeemedrejectedbyArmstrong.

SpecialWarrantyPeriodsareasfollows:

Series EHU-700 Electric Steam Humidifier, Series HC-4000 HumidiClean Humidifier and GFH Gas Fired Humidifier with Ionic Beds: Two(2)yearsafterinstallation,butnotlongerthan27monthsaftershipmentfromArmstrongsfactory.

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