armstrong series gfh gas fired humidiclean (gfh-150, gfh-300
TRANSCRIPT
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
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HK
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KH
MW
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ED
CFigure 6-1. Model 150
T
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JP N
HK
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V
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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
GFHE 300 Outdoor Enclosure
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
GFHE 450 Outdoor Enclosure
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
34
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
D3825 Lid Gasket - Front - GFH-300
D3826 Lid Gasket - Front - GFH-450
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
C5432 Sealed Combustion Kit for GFH-300
C5433 Sealed Combustion Kit for GFH-450
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.