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Installation, Operation and Maintenance Instructions

Read and Save These Instructions

This manual is provided to acquaint you withthe dehumidier so that installation, operationand maintenance can proceed successfully.Ultimate satisfaction depends on the qualityof installation and a thorough understandingof this equipment. The dehumidier is built

around tested engineering principles and haspassed a thorough inspection for quality ofworkmanship and function.

QuestDRY 150

Installation, Operation and Maintenance Instructions

P. O. Box 8680 Phone 608-222-5301

Madison, WI 53708 Toll-Free 1-800-533-7533

www.thermastor.com [email protected]

Read and Save These Instructions

Specifcations subject to change without notice.

TS-472

Revised 2/08

QuestDRY50

Water Removal Rates (Pints/Day)

150 pints 80F, 60% (AHAM)

Quest DRY50:

Patentpending,optimizedair-to-airheatexchanger.

Requiresonly6.9amps/115Vhalftheamountofcompetitors!

Environmentally-friendlyR410Arefrigerant.

High-efciency,long-lifeimpellerfan.

Quietoperationandsuperiorhighstaticpressureperformance.

Pre-conguredforfreshairventilation.

Industry-leading7.9pintsperkWh.

questAsset Protection and IAQ Solutions

quest

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Quest DRY150 Installation, Operation and Maintenance Instructions

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Table of ContentsSafetyPrecautions.....................................................3

1. IntendedApplication............................................4

2.Specications......................................................4

3.Installation4 3.1 Location........................................................4

3.2ElectricalRequirements................................. 5

3.3CondensateWaterRemoval...........................5

3.4Ducting......................................................... 6

3.4AInstallingDuctCollars..........................6

3.4BDuctingforDehumidication................6

3.4CDuctingforFreshAir............................. 6

3.4DInstallationinaBasement....................7

3.4EInstallationinaattic.............................. 8

3.4FInstallationwith(2)HVACsystems......... 8

3.4GInstallationwithoutanHVACsystem....8 3.5QuietInstallation...........................................8

3.6NoiseAbatement...........................................9

4.Controls ...........................................................9

4.1A Humidity/FanControlPanel WITHOUTFreshAirVentilationor...... Damper..............................................9

4.1B Humidity/FanControlPanelWITH...... FreshAirVentilationandWITHOUT

Damper..............................................9

4.1C Humidity/FanControlPanelWITH

FreshAirVentilationANDDamper...10 4.1DVentilationTimerandHumidity ControlWITHFreshAirAND MotorizedDamper...........................10

4.1E DEH3000DigitialControl

WITHFreshAirANDDamper.......... 10

4.1F DEH3000DigitalControlWITHOUT FreshAir...........................................10

4.2HumidityControlAdjustment...................... 10

4.3Fan/FilterSwitch.......................................... 10

4.4VentilationTimer......................................... 11

4.4ASettingtheTime................................... 11

4.4BVentilationSchedule............................11 4.4CAutomaticorManualMode................11 ControlsWiringDiagram............................. 12

5.DEH3000DigitalControl

InstallationInstructions.......................................13

5.1.Specications.............................................. 13

5.2.Installation...................................................13

5.2A InstallInstructions............................. 13

5.2B Wiring..............................................13

5.2C AuxillaryRelayOperation................14 5.2D DehumidierLockout....................... 15 5.2E Location........................................... 15 5.2F Testing..............................................15

5.3.Operation....................................................17 5.3A Display............................................. 17

5.3B Setting..............................................17

5.3C On/OffSetting..................................17

5.3D SettingClockTime............................17

5.3E SettingRelativeHumiditySetpoint.... 17

5.3F Operation......................................... 18

5.3G FanSetting&Operation................... 18

5.3H DamperOperationandSetting (Ventilation)......................................19

5.3I Intermittent/ProgrammedVentilation19

5.3J TemperatureCutoutProgramming....20

5.3K DefaultSettings................................21

6.Maintenance....................................................... 22

6.1StandardAirFilter........................................22

6.2HighEfciencyAirFilter.............................. 22

6.3 ImpellerFanOiling...................................... 22

6.4FreshAirReturn.......................................... 22

7.Service ......................................................... 22

7.1Warranty....................................................22

7.2Technicaldescription...................................23

7.3Troubleshooting...........................................23

7.4RefrigerantCharging...................................25

7.5ImpellerFanReplacement.......................... 25

7.6Compressor/CapacitorReplacement............25

7.6ACheckingCompressorMotorCircuits. 26

7.6BReplacingBurnedOutCompressor..... 26

7.6CReplacingCompressor-NonburnOut..27

7.7RemoteControls.......................................... 27

7.7AHumidityControl................................27

7.7BVentilationTimer..................................27

7.8DefrostThermostat.......................................28

7.9ElectricVentilationDamper.......................... 28 7.10CondensatePumpKit................................. 28

ElectricalSchematic...............................................29

PictorialElectricalDiagram..................................... 30

ServicePartsList..................................................... 31

OptionalPartsList.................................................. 32

DoorandCollarAssembly......................................33

Warranty ............................................................. 34

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FOR HVAC INSTALLER ONLY

Safety Precautions

Readtheinstallation,operationandmaintenanceinstructionscarefullybeforeinstallingandoperatingthisdevice.ProperadherencetotheseinstructionsisessentialtoobtainmaximumbenetfromyourQuestDRY150indoorairqualitysystem.

FOR HVAC INSTALLER AND OWNER ONLY

READ AND SAVE THESE INSTRUCTIONS

ThedeviceisdesignedtobeinstalledINDOORSINASPACETHATISPROTECTEDFROMRAINANDFLOODING.

Installtheunitwithspacetoaccessthebackorsidepanels

formaintenanceandservice.DONOTINSTALLUNITWITHTHESERVICEPANELSINACCESSIBLE.

Avoiddirectingthedischargeairatpeople,oroverthewaterinpoolareas.

Ifusednearapoolorspa;becertainthereisNOchancetheunitcouldfallintothewater,besplashedandthatitispluggedintoaGFIGROUNDFAULTINTERRUPTOUTLET.

DO NOT use the device as a bench or table.

DONOTplacethedevicedirectlyonstructuralmembers.Providevibrationisolationinordertominimizeoperational

vibrationand/ornoise. AdrainpanMUSTbeplacedundertheunitifinstalledabovealivingareaoraboveanareawherewaterleakagecouldcausedamage

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1. Intended Application for Quest DRY150

Fortheidealinstallation,drawairfromthecentralpartofthestructureandreturnittoisolatedareasofthestructureliketherestrooms,utilityormechanicalroom,orcookingarea.Theductworkoftheexistingheatingsystemcanbeusedtosupplyairtothestructure.

2. Specications

Model: QuestDRY150IndoorAirQualitySystem

Electrical: 110-120VAC,6.9Amps,60Hz,grounded

WaterRemovalCapacity: 150pints/day@80F,60%RH

OperatingTemp.Range: 56Fmin.,100Fmax.

AirFlow: [email protected]"WG

[email protected]"WG

RefrigerantCharge: 2lb.,R-410.A

Ductconnections: Round10"&6"inlets,10"outlet(ovaled)

FilterSize: 2"X16"X16"

Size(w/oductcollars): 37"wideX22"highX205/8"deep

UnitWeight: 134lbs.

3. Installation

3.1 LocationTheQuestDRY150canbeinstalledinavarietyoflocationstomeettheowner'sneedsaslistedbelow.Inallcaseskeepthefollowingcautionsinmind:

ItisdesignedtobeinstalledINDOORSINASPACETHATISPROTECTEDFROMRAINANDFLOODING.

Installtheunitwithspacetoaccessthebackandsidepanelsformaintenanceandserviceandalsotoalloweasyaccesstotheltercoverpanel.DONOTINSTALLUNITWITHTHEFRONTPANELORFILTERCOVERPANELINACCESSIBLE.

Avoiddischargingtheairdirectlyatpeople,oroverthewaterinpoolareas.

Ifusednearapoolorspa,becertainthereisNOchancetheunitcouldfallintothewaterorbesplashed

andthatitispluggedintoaGROUNDFAULTINTERRUPTER.

DONOTusetheQuestDRY150asabenchortable.

DONOTplacetheQuestDRY150directlyonstructuralmembers.Providevibrationisolationinordertominimizeoperationalvibrationand/ornoise.

AdrainpanMUSTbeplacedundertheunitifinstalledabovealivingareaoraboveanareawherewaterleakagecouldcausedamage.

FOR HVAC INSTALLER AND OWNER ONLY

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PlacetheQuestDRY150onsupportsthatraisethebaseoftheunitabovethetopoftheangesonthedrainpanbeneathit.RaisingtheQuestDRY150willhelptheunitdrainwithgravityow.DonotplacetheQuestDRY150directlyonstructuralbuildingmemberswithoutvibrationabsorbersorunwantednoisemayresult.

TheQuestDRY150maybesuspendedwithsteelhangerstraps(plumberstape)orasuitablealternativefrom

structuralmembers,unitmustbesupportedfromunderneath.Don'thangfromsidesorends.Remembertoplaceadrainpanundertheunitifitissuspendedaboveanishedareaoraboveanareawherewaterleakagecouldcausedamage.

TheQuestDRY150shouldbelocatedneartheexistingairhandlingsystemtominimizetherequiredductworkforconnectingtheQuestDRY150totheexistingairhandlingsystem.ThecontrolsfortheQuestDRY150areremotefromtheunitandmustbelocatedinthespacethatistobeconditioned.Thecontrolsarelowvoltage(24volt)andshouldbeconnectedtotheQuestDRY150withlowvoltagethermostatcable.

Iffreshairventilationisdesired,thoughtshouldbegiventothelocationforthefreshairducting.A6"roundinsulatedductwillhavetobeinstalledontheQuestDRY150andruntotheoutsideofthestructuretobringinfreshair.Usean8"insulatedroundductforlengthsofmorethan50feetorifmorethan100CFMisneeded.Consultlocalcodesfornecessarydistancesfromexhaustportswheninstallingfreshairreturn.

3.2 Electrical Requirements

WARNING: DO NOT ALLOW THE YELLOW LEAD FROM THE QUEST DRY150 TO CONTACT THE REDLEAD OR WHITE LEAD FROM THE Quest DRY150 OR DAMAGE TO THE TRANSFORMER WILL RESULT.

TheQuestDRY150plugsintoacommongroundedoutlet.Itdrawsaround6.9Ampsundernormaloperatingconditions.Ifusedinawetarea(pool,sparoom,orbasementpronetoooding),agroundfaultinterrupterprotectedcircuitisrequired.

Installtheremotecontrolpanelinacentralareaofthestructurewhereitwillsensetherelativehumidityofthestructureaccurately.DonotinstallthecontrolpanelwhereitmaynotaccuratelysensetherelativehumiditysuchasnearHVACsupplyregisters,nearexteriordoors,ornearapoolorspa.TheinstallermustsupplythewiringbetweentheQuestDRY150andthecontrolpanel.Besuretosafelyroutethecontrol

wiringtopreventdamageduringinstallation.BecarefulnottocrossthewireswhenconnectingtheQuestDRY150andtheremotecontrolpanelordamagetothetransformermayresult.

TheremotecontrolsoftheQuestDRY150arepoweredbyalowvoltagecircuit(24Vac)andmustNEVERcontactorbeconnectedtoahighvoltagecircuit.ThecontrolwiresleavingtheQuestDRY150andtheremotecontrolpanelsarenumberedandcolor-codedtopreventconfusion.SomeofthecontrolwiresleavingtheQuestDRY150maynotbeusedwithcertaincontrolpanelsandshouldbeleftsafelydisconnectedwithwirenutstapedontothestrippedends.BesuretoconsulttheelectricalschematicinthismanualorinsidetheaccesspaneloftheQuestDRY150beforemakingthecontrolconnections.

3.3 Condensate Water RemovalCondensatedrainsbygravityviathedrainport.Use3/4"maleNPTPVCpipe.Routedrainpipetodrain.Installatrap

ifpossible.Takecarewheninstallingdrainpipetodrainport.Useanadjustablewrenchtosecurethedrainport.Anoptionalcondensatepumpkitmaybeinstalledifaliftisrequiredtodisposeofthecondensate.Thecondensatepumpkitcanbeordereddirectlyfromthefactory.Seetheoptionalpartslistforinformationonthekit.

1.00"

External drain trap on unit

is recommended


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3.4 Ducting3.4A Installing Duct Collars

TheQuestDRY150isequippedwith10"and6"roundinletcollarsanda10"round(ovaled)exhaustcollar.Followinstructionsincludedwithcollars.

3.4B Ducting for Dehumidication

Fortheidealinstallation,drawairfromthecentralpartofthestructureandreturnittotheisolatedareasofstructure.Theductworkoftheexistingheatingsystemcanbeusedtosupplyairtothestructure.Iftheexistingsupplygoestoisolatedareasofthestructure,dischargethesupplyoftheQuestDRY150intothesupplyoftheexistingheatingsystem.Iftheexistingheatingsystemincorporatesacentralsupply,installationofaseparatesupplyductfromtheQuestDRY150toeachisolatedareaisrecommended.DONOTdrawairdirectlyfromtheisolatedareas.Youmaydrawairfromareasthatareopentothestructure.AllexibleductingconnectedtotheQuestDRY150shouldbeULlisted.

TheinletoftheQuestDRY150isthe10"diameterholeinthelterenclosureoftheunit.A10"roundcollarissuppliedwiththeunittoattachtoroundduct.Theductmaybepermanentlyattachedtothecollar.A6"roundcollarisprovidedwiththeunittoattachtothe6"holeinthelterenclosure.The6"collarshouldbe

cappediffreshmake-upairisnotdesired.Iffreshmake-upairisdesired,seeSection3.4C.A10"round(ovaled)collarissuppliedwiththeunitfortheoutletoftheQuestDRY150.

AlengthofexibleductingonallQuestDRY150ductconnectionsisrecommendedtoreducenoiseandvibrationtransmittedtorigidductworkinthestructure.

DuctingtheQuestDRY150asmentionedinSections3.4A-3.4Grequiresconsiderationofthefollowingpoints:

Duct Sizing: Fortotalductlengthsupto25',useaminimum10"diameterroundorequivalentrectangular.Forlongerlengths,useaminimum12"diameterorequivalent.Grillsordiffusersontheductendsmustnotexcessivelyrestrictairow.

Isolated Areas:Effectivedehumidicationmayrequirethatductingbebranchedtoisolated,stagnantareas.

Use8"orlargerdiameterbranchductingtoeachoftwoorthreeareas,use6"orlargertoeachoffourormoreareas.

Connecting to existing HVAC systems: Anoptional10"checkdamperisavailablefromthefactorytopreventreverseowthroughtheQuestDRY150.IftheQuestDRY150isductedtothesupplyductingairhandler,itisrecommendedthatthecheckdamperbeplacedintheQuestDRY150supplyduct.Contactthefactorywhenconnectingtoastaticpressureofgreaterthanorequalto+.5"WG.

3.4C Ducting for Fresh Air

Freshaircanbebroughtintothestructurebyconnectinganinsulatedductfromoutsidetothe6"QuestDRY150inletandbyturningonthefanswitchoractivatingthehumiditycontrol(onunitswiththehumiditycontrolpanel).Activatetheventilationtimeronunitswiththeventilatingandhumiditycontrolpaneltobringinfreshair.RefertoSection4.5forprogramminginstructionsfortheventilationtimer.Advantagesofthisformofventilationinclude:

1.Outsideairislteredbeforeenteringthebuilding.

2.OutsideairwillbedehumidiedbeforeenteringiftheQuestDRY150isrunningindehumidicationmode.

3.Drawingairfromoutsideandblowinginsideaidsinslightlypressurizingthestructure.Thishelpspreventdirtyandhumidairfromenteringelsewhere.Italsoreducesthepotentialforcarcinogenicradongastoenterandprovidesmake-upairforopencombustionandexhaustdevicesliketheclothesdrier,replace,andwaterheater.

4.Adequateexhaustfansarerecommendedthroughoutthestructure(e.g.,restrooms).


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Incoldclimatesorareaswheretheoutdoordewpointislowattimes,ventilationcanbeusedtodehumidifythestructure.Thisisaccomplishedbybringingthedry,lowdewpointairintothestructureduringthesetimes.Thisapproachisoftenmoreeconomicalthanrunningthedehumidiertoremoveexcessmoisturefromthestructure.Incoldclimates,itiscriticaltoadequatelyventilatetoreducetheinsidemoisture

contenttoavoidmoistureaccumulatinginthewallcavities.Forexample;inastructurethatexperiencescondensationontheinteriorsurfaceofthewindowsduringthewinter,increasingtheamountofventilationwilloftencuretheproblem.

Aninsulated6"diameterductisgenerallysufcienttoprovideupto125CFMofoutsideair.LargequantitiesofoutsideairwilleitherpositivelyornegativelyimpacttheperformanceoftheQuestDRY150,dependinguponinsideandoutsideairconditions.Consultthefactorybycalling1-800-533-7533forrecommendationsregardingtheuseofhigherowswithyourspecicapplication.

Theoutsideairductshouldbeconnectedtothe6"roundcollaronthelterenclosureoftheunit.The6"roundcollarincludesamanualdamper.Adjustthemanualdampertoprovidethedesiredamountoffreshairforventilation.Theamountoffreshairshouldbebasedonthesizeandoccupancyoftheresidence.Ifyouareunsureofyourventilationairrequirements,consultthefactorybycalling1-800-533-7533forassistance.

3.4D Installation in a Basement or Crawlspace with an Existing Forced Air HVAC System

Itisrecommendedthatanew,separatereturnductbeinstalledfortheQuestDRY150fromacentralareaofthestructure.Ifthisisnotpossible,andiftheexistingsystemhasmultiplereturns,selectonetodisconnectfromtheexistingforcedairsystemanduseitforthededicatedQuestDRY150return.Alwaysselectareturnfromacentrallocationinthestructureinanareathatisalwaysopentotherestofthestructure.Donotuseareturnfromaroomthatmayhaveitsdoorclosedmuchofthetime.

IfthestructureinwhichtheQuestDRY150istobeinstalledhasanexistingforcedairHVACsystem,utilizetheHVACsystemtomaketheQuestDRY150installationeasier.

Basement Installation:Installaseparate10"returnfortheQuestDRY150inacentralareaofthestructure.DuctthesupplyoftheQuestDRY150toanoptional10"x10"x10"tee/damperthatis20%opentothebasement.Thisallowstheabilitytodischargeavariableamountofdehumidiedairintoabasementthat

maynotbewellservedbytheexistingductsystem.DucttheothersideoftheteetotheairsupplyoftheexistingHVACsystem.Abackdraftdamperisrequiredintheductbetweenthe10"teeandthecentralsupplyducttopreventairfrombeingdischargedintothebasementduringcentralfanoperation.Connectaductfromoutsidetothe6"collaroftheQuestDRY150ifyouwishtoprovidefreshairventilation.

Crawl Space Installation:InstallaseparatereturnfortheQuestDRY150inacentralareaofthestructure.DuctthesupplyoftheQuestDRY150toa10"x10"x10"tee/damperthatis20%opentothecrawlspaceifdesired.Ducttheothersideoftheteetotheairsupplyof

theexistingHVACsystemventilation.Connectaninsulatedductfromoutsidetothe6"collaroftheQuestDRY150ifyouwishtoprovideoptionalfreshair.


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3.4E Installation in a Ceiling Cavity with an Existing Forced Air HVAC System

ALWAYSinstallacatchpanwithadrainand/oroatinterruptswitchforcondensateundertheQuestDRY150inanattictoreducelikelihoodofwaterdamage.

LocateaseparatereturnfortheQuestDRY150inacentralareaofthestructure.DuctthesupplyoftheQuestDRY150totheairsupplyoftheexistingHVACsystem.Connectaninsulatedductfromoutsidetothe6"collaroftheQuestDRY150ifyouwishtoprovidefreshairventilation.Adjustdamperinthecollartoprovidethedesiredamountoffreshair.Usingaremotecontrol,programtheunittobringinthedesiredamountoffreshair.

3.4F Installation in a Structure with Two ForcedAir HVAC Systems

TheQuestDRY150canbeinstalledintotwotypicalHVACductingsystems.InstallaseparatereturnfortheQuestDRY150asdirectedabove.Dischargeairfromthedehumidiershouldbe

splitandroutedtoeachsupplyductingsystem.AbalancingdamperandabackdraftdamperisrequiredineachductbetweentheQuestDRY150andtheHVACductingsystem.Thisallowsairowtobeadjustedandpreventsowofairbetweentheductingsystems.Contactthefactoryforassistance,ifnecessary.

3.4G Installation in a Structure with No Existing Forced Air HVAC System

WheninstallingtheQuestDRY150inastructurethatdoesnothaveaforcedairHVACsystem,asinglereturnfortheQuestDRY150shouldbeinstalledincentralopenareaofthestructure.DONOTlocatethereturninarestroomorakitchenorcookingarea.ThesupplyoftheQuestDRY150shouldbelocatedintheremoteareasofthestructure(suchasbedrooms,den,etc.).Byductingthisway,theairinsidethestructurewillcirculatethroughtheQuestDRY150tobelteredanddehumidied.Avoiddischargingalltheairfrom

thedehumidierinonelocationtopreventheatbuildupinthatarea.4"diameterductisrecommendedforbranchestothesmallerareas,6"diameterductisrecommendedforbranchestolargerareas.Refertosection3.4Bforbranchductsizing.Connectaninsulatedductfromoutsidetothe6"collaroftheQuestDRY150ifyouwishtoprovidefreshairventilation.

3.5 Quiet InstallationConsidercompressionvibrationandairownoiseduringinstallation.Useofexductand/orvibrationisolationmaterialsduringmountingandductingwillresultinquieteroperation.

3.6 Noise AbatementAlengthofexibleductingonallQuestDRY150ductconnectionsisrecommendedtoreducenoiseandvibrationtransmittedtorigidductworkinthestructure.


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4. Controls

Allcontrolpanelsshouldbemountedinacentralareaofthestructurewhereitcanaccuratelysensethehumidityoftheairinthelivingspaceandbeaccessed.Allcontrolsrequireeldwiringfromtheunitlocationtothepanelmountlocation.

To determine how each control operates the Quest DRY150, it must rst be determined which control isbeing used and whether or not the Quest DRY150 is ducted for fresh air ventilation. Refer to appropriatesection.

Humidity/Fan Control Panel (P/N 4024155) (Figure 1)

4.1A Humidity/FanControlPanelWITHOUTFreshAirVentilationorDamper

4.1B Humidity/FanControlPanelWITHFreshAirVentilationandWITHOUTDamper

4.1C Humidity/FanControlPanelWITHFreshAir

VentilationANDDamper

Ventilation Timer/Humidity Control Panel (P/N 4024125)(Figure 2)

4.1D VentilationTimerandHumidityControlWITHFreshAirANDMotorizedDamper

DEH 3000 Digital Control (P/N 4024539) (Figure 3)

4.1E DigitalControllerWITHFreshAirANDDamper

4.1F DigitalControllerWITHOUTFreshAir

4.1A Humidity/Fan Control Panel WITHOUT Fresh Air Ventilation or Damper

Thehumidity/fancontrolpanelautomaticallycontrolsthehumidityofthespace.Thehumidity/fancontrolpanelcontainsanadjustablehumiditycontrolandafanswitch.Thepanelhasacoverthatmustremainopentotheairwithinthelivingspaceforaccuratehumiditysensing.WhenthefanswitchisintheONposition,airwillbecontinuallylteredandcirculatedthroughoutthestructure.Forhumiditycontroloperationrefertosection4.2.

4.1B Humidity/Fan Control Panel WITH Fresh Air Ventilation and WITHOUT Damper

Thehumidity/fancontrolpanelautomaticallycontrolsthehumidityofthespace.Thehumidity/fancontrolpanelcontainsanadjustablehumiditycontrolandafanswitch.Thepanelhasacoverthatmustremainopentotheairwithinthelivingspaceforaccuratehumiditysensing.Outsideairiscontinuallyintroducedwhenever

fanisON.Manualoperationoffanlterswitchcontrolsoutsideairventilation.SincethefanoperateswhenevertheQuestDRY150isdehumidifyingoutsideairwillalsobeintroduced.Forhumiditycontroloperationrefertosection4.2.

4.1C Humidity/Fan Control Panel WITH Fresh Air Ventilation AND Damper

Inthisconguration,amotorizeddamperhasbeeninstalledinthefreshairduct.Whenthefan/lterswitchisintheOFFposition,thedamperisclosed.TheQuestDRY150willthencirculateanddehumidifyairtoprovidehumiditycontrol.

Figure 1: Humidity/Fan

Control PanelPart No. 4024155

Figure 2: Ventilation Timer

and Humidity Control PanelPart No. 4024125

Figure 3: DEH 3000 DigitalControl (P/N 4024539)


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resetbuttonisthesmallrecessedbuttonwithanRbeneathitlocatedbelowthe1-7andhbuttons.Depresstheresetbuttonuntilthedisplayclears.Releasetheresetbutton.Thedisplaywillreappearas00:00.Resettingthetimerwillclearthetimeandallprogramsettings.Afterresettingthetimerfollowtheinstructionsbelowtosetthecorrecttimeandventilation

programs.4.4A Setting the Time

Setthecorrecttimeonthetimerbyslidingtheswitchintheupperrighthandcornerofthetimertotheclocksymbol.andpressingthe1-7(DAY),h(HOUR),andm(MINUTE)buttons.Rememberthistimeroperatesona24-hour(militarytime)clock.

4.4B Ventilation Schedule

SlidetheswitchintheupperrighthandcornertotheprogramsymbolP.ONwillappeartotherightofthetimeandthenumber1willappearinthelowerrighthandcornerofthedisplay.The1andONsignifytheturnontimefortherstprogram.Pressthe1-7,handmbuttontochoosethedaysoftheweekforthisprogram.YoucanchooseMon.-Sun.,Mon.-Fri.,Sat.-Sun.,oranysingledayoftheweek.Thedayschosenareshownalongthetop

ofthedisplayontheventilationtimer.Nextpressthehbuttontosetthehourforthestartoftheventilationperiod.Rememberthistimeroperatesona24-hourclock(militarytime).Thenpressthembuttontosettheminutespastthehourtostarttheventilation.

Now,withtheventilationstarttimeset;presstheI/Obutton.ThewordOFFshouldappeartotherightofthetimeandthenumber1shouldremaininthelowerrighthandcornerofthedisplay.The1andOFFsignifytheturnofftimefortherstprogram.Settheturnofftimeusingthe1-7,handmbuttonsinthesamewayasdescribedaboveandcontinueontothesecondthroughsixthprograms.Whensettingtheventilationprograms,youcanreturntothecurrenttimedisplaybyslidingtheswitchintheupperrightcornerofthetimertoRUN.TheslideswitchmustbesettoRUNforthetimertooperateitsscheduledprograms.

4.4C Automatic or Manual Mode

Theslideswitchintheupperleftofthetimerisusedtochoosebetweenautomaticandmanualoperation.WhentheslideswitchissettoAUTOmode,theQuestDRY150willventilatewhenthescheduledprogramscallforventilation.When

theslideswitchissettomanual(settohandsymbolontheright),theoperationofthetimeriscontrolledbytheI/Obuttononly.PressingtheI/ObuttonwillswitchtheventilationtimerbetweenON(detent)andOFF(detent).AsyoupresstheI/Obutton,ONorOFFwillbedisplayedtotherightofthetime.The ONorOFFindicatesiftheventilationtimerisonoroff.TheI/ObuttonwillmanuallyoverridescheduledprogramsifthetimerisinAUTOmode.

Figure 6: Humidity/FanControl Panel Part No.055

Figure 7: Ventilation Timerand Humidity ControlPanel Part No. 4024125


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WIRE THE UNIT AND CONTROL PACKAGE AS SHOWN IN THE DIAGRAM BELOW

WARNING: DO NOT allow the yellow lead from the unit to contact the red lead or the white lead from the unit ordamage to the transformers will result. Do not direct connect the white lead on the unit to the violet lead on theventilation control or damage to the transformer will result.

ControlPartNo.4026570

UA Base Unit

Yello

w

Re

d

Blue

Green

White

DAMPER

24VAC

DMP COMP FAN

optional

Humidity/Fan Control Panel

Ventilation Timer/HumidityControl Panel

DEH 3000 Digital Control


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5. DEH 3000 Digital Control Installation Instructions

5.1 SpecicationsPartNumber: 4026570

Model: DEH3000DigitalControl

Electrical: 24VAC

HumidityRange: 1095%RH

HumidityAccuracy: +/-5%

Output: 3Amps24VAC

RelayCapacity: 5Amps

TempRange/Accuracy: 2%

Size: 4.95"widex4.19"high

5.2 InstallationThiscontrolpanelmustbeinstalledintheconditionedspaceandinaccordancewithallapplicablecodesandstandards.Followtheinstructionsbelowwheninstallingandsettingthiscontrol.

5.2A Install Instructions

1. Separatethefrontpanelfromthebackpanelbydepressingthemiddlesectionsofthetopandbottomofthefrontpanel.

2. Linethebackpanelupagainstthewalloratsurfaceontowhichitistobemountedanddrillintheappropriatemountingholes.

3. Insertthescrewsandtightendownsotheyextendapproximately1/8fromthebackplate.

4. Alignthebackpanelsothatthecontrolislevel.

5. Tightenthescrewstolockintoposition.

6. Maketheelectricalconnectionstotheterminalsonthebackpanelasshowninthewiringdiagram.

7. Reassemblethefronttothebackpanel.Connectatthetoprst,thenatthebottom.

8. Testconnections(seeSection2.6)

5.2B Wiring

WARNING: DO NOT ALLOW THE YELLOW LEAD FROMTHE Quest DRY150 TO CONTACT THE RED OR WHITELEADS FROM THE Quest DRY150 OR DAMAGE TO THETRANSFORMER WILL RESULT. UNPLUG Quest DRY150BASE UNIT BEFORE WIRING CONTROL.

TheinstallermustsupplythewiringbetweentheQuestDRY150andthecontrolpanel.Besuretosafelyroutethecontrolwirestopreventdamageduringinstallation.BecarefulnottocrossthewireswhenconnectingtheQuestDRY150andtheremotecontrolpanelordamagetothetransformermayresult.

TheremotecontroloftheQuestDRY150ispoweredbyalowvoltagecircuit(24VAC)andmust NEVERcontactorbeconnectedtoahighvoltagecircuit.SomeofthecontrolwiresleavingtheQuestDRY150maynotbeusedwithcertaincontrolpanelsandshouldbeleftsafelydisconnectedwithwirenutstapedontothestrippedends.BesuretoconsulttheelectricalschematicinthismanualoronthefrontpaneloftheQuestDRY150beforemakingthecontrolconnections.

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WARNING: TO AVOID TRANSFORMER DAMAGEONLY CONNECT THE WHITE WIRE TO THE

CONTROL IF A DAMPER IS USED.

Thewhitewirecontrolstheoptionalmotorizeddamperthatcanbeinstalledintoafreshairduct.ThisprovidestheabilitytocontrolwhenfreshairisintroducedintothebuildingbyusingtheventilationtimerfunctionlabeledDMPonthecontrol(SeeSection3.7).IF THE MOTORIZED DAMPER ISNOT USED, DO NOT CONNECT THE WHITEWIRE TO THE CONTROL OR DAMAGE TO THETRANSFORMER MAY RESULT.Simplyleavethe(DMP)terminalunusedifthedamperisnotused,andcapoffthewhiteleadfromtheQuestDRY150

dehumidier.

5.2C Auxiliary relay operationAttimesitmaybedesirabletocoordinatefanoperationofthecentralheating/coolingsystemwithdehumidieroperation.TheDEH3000featuresarelaythatprovidesthisability.TherelayterminalslabeledNC,COMandNOoperateaccordingtothefollowingchart:

DehumidicationOperation COM/NO COM/NC

ON CLOSED OPEN

OFF OPEN CLOSED

Commonuses(assumingstandardthermostatwiringcolorschemesasnoted):

Disengage A/C during dehumidication

RedirecttheyellowthermostatwiretotheNCterminal.WiretheyellowwirefromtheA/CtotheCOMterminal.

Engage the A/C central fan during dehumidication

1.Disconnectthegreenwirethatrunstothefanrelayfromthescrewonthethermostat.

2.ConnectthegreenwirethatrunstothefanrelaytotheCOMscrewontheDEH3000board.

3.RunawirefromtheredwirescrewonthethermostattotheNO(NormallyOpen)screwontheDEH3000board.

4.RunawirefromthegreenwirescrewonthethermostattotheNC(NormallyClosed)screwontheDEH3000board.

ThecentralfanshouldrunwhentheThermostatfanswitchisturnedtoONandwhenthedehumidierisoperating.

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5.2D Dehumidier lockout/activation:AC sensor featureThecontrolhastheabilitytoactivatethedehumidierordeactivatethedehumidierwhentheairconditionerisrunning.

Standard wire colors for thermostats are as follows:

Description Color Terminal code

24VACReturn Red R

CallforHeat White WorW1

ForceFanOn Green G

CompressorCallforCooling Yellow YorY1

DEHUMIDIFIER DEACTIVATES WHEN THEAIR-CONDITIONER IS RUNNING

Thecommonwireonthethermostattransformer(black)needstobewiredwiththeyellowwirefromthedehumidier.

TheYellowwirefromthethermostatmustbewiredtotheACoffsensorterminal.

DEHUMIDIFIER ACTIVATES WHEN THEAIR-CONDITIONER IS RUNNING

Thecommonwireonthethermostattransformer(black)needstobewiredwiththeyellowwirefromthedehumidier.

TheYellowwirefromthethermostatmustbewiredtotheAConsensorterminal.

5.2E LocationInstalltheremotecontrolpanelinacentralareaofthestructurewhereitwillsensetherelativehumidityofthestructureaccurately.DonotinstallthecontrolpanelwhereitmaynotaccuratelysensetherelativehumiditysuchasnearHVACsupplyregisters,nearexteriordoorsandwindows,ornearapoolorspa.

5.2F TestingAfterwiringconnectionshavebeenmade,verifyconnections.First,makesurethewhitewirefromthebaseunitisnotwireddirectlytotheDEH3000control.Theremustbeamotorizeddamperinserieswiththeseconnections,orthewhitewiremustnotbeconnectedtothecontrol.Mis-wiringmayresultintransformerdamage.

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After connections have been veried, this short test will conrm proper wiring.

1.Installfrontcoverofcontrol;insertattoprst,thenbottom.

2.PluginQuestDRY150baseunit.Thecontrolshouldpowerup.

3.TurncontrolonbypressingtheON/OFFbutton.

4.EngagedehumidicationoperationbyadjustingRHsetpointbelowambientconditions.

a.PressRHuntilRHsetpointis20%.

b.VerifyQuestDRY150fanandcompressoroperation.

c.Verifyventilationdamper(ifused)isclosed.

5.Verifyfanonlyoperationbydisengagingdehumidicationandoperatingfan:

a.AdjustRHsetpointaboveambientconditionsbypressingandholdingRHuntilsetpointis80%.

b.Pressfanbutton,thenpressagaintotogglefantoONsetting.

c.Releasefanbutton,thenpressagaintotogglefantoONsettinguntilFANashesondisplay.

d.VerifyfanoperationofQuestDRY150.Nocompressoroperationshouldbenoted,andventilationdamper(ifused)shouldbeclosed.

6.Verifyventilationdamperoperation(ifinstalled)bydisengagingfromoperationandengagingventilatingoperation.

a.PressandholdfanbuttonuntilFANashesondisplay.

b.ReleaseFANbutton,thenpressagaintotogglefanoperationoff.

c.PressandholdVENTbuttonuntilVENTashesondisplay.

d.ReleaseVENTbutton,thenpressagainuntilOPENisdisplayed.

e.VerifyQuestDRY150fanoperationandventilationdamperisopen,withnocompressoroperation.

7.Ifanyfunctionsarenotworkingproperly,verifywiringandconnections.Metersmaybeusedacrossterminalstoverifyvoltage.Ifthereisaconcernaboutthebaseunitnotoperatingproperly,theleadsexitingthebaseunitmaybeconnectedandoperationveriedaccordingtothefollowingmatrix:

Wire connections Operation Yellow&Blue Fan&Compressor

Yellow&Green FanOnly

Donottestanyotherconnectionsortransformerdamagemayresult.RefertotheappropriateQuestDRY150baseunitmanualforadditionalinformation.

8.Verifyadditionaloptionalcontroloperationssuchasfaninterlockorlockout.

9.Proceedtooperation/settingsection.


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5.3 Operation

5.3A Display

Whenthereispowertothecontrol,thecontroldisplaywillshowthe

time,day,humidity,andtemperature. Whenthecontrolisturnedon,thesetpoint,fanstatus,auto/holdmode,andfreshairventstatusisdisplayed.

Whenakeyispressedthedisplaywilllight.

TheTIMEandDAYisdisplayedatthetopofthescreen.

RHandTemperaturearedisplayedinrealtime.

AnObeforethesetpoint,vent,orfanindicatestheunitisoperatingthedevice.

AashingObeforethesetpoint,vent,orfanindicatestheunitisinadelaypriortooperatingthedevice.

Note: Delay is an intentional factory installed time delay cycle that ismeant to prevent short cycles, extending the life of the Quest DRY150. Ifa delay is encountered, WAIT 10 MINUTES BEFORE EXPECTING NORMALOPERATION.

5.3B Setting

Duringtheset-upprocess,ifyoumakeamistake,simplycontinue.Youcanalwaysgobacktoadjustthesettings.Ifyouleavethecontrolaloneanddonttouchanybuttonsfor10seconds,thecontrolwillrememberanychangesmadeandreturntohome.

5.3C On/Off Setting

PresstheON/OFFbuttontoturnthesystemonoroff.Whenthesystemison,thesetpoint,fanstatus,auto/holdmode,andfreshairventstatusisdisplayed.Intheoffmode,thecontrolwillshowthetime,day,humidity,andtemperature.Whentheunitisshipped,itisinmanualmode.

5.3D Setting Clock Time

1. PressandholdtheCLOCKbutton.Thehourdisplaywillash.Releasethebutton.

2. UsetheUP/DOWN RHbuttonstochangethevalue.

3. PresstheCLOCKbuttonagainandtheminutedisplaywillash.UsetheRHbuttonstochangethevalue.

4. PresstheCLOCKbuttonagainandtheAM/PMdisplaywillash.UsetheRHbuttonstotogglethevalue.

5. PresstheCLOCKbuttonagainandthedaydisplaywillash.UsetheRHbuttonstochangethevalue.

IftheCLOCKbuttonispressedagainornobuttonispressedfor5seconds,thedisplaywillautomaticallyreturntoHOME.

5.3E Setting Relative Humidity Setpoint

Therelativehumiditysetpoint(theaverageRHthatismaintained)operatesthedehumidierfunctionoftheQuestDRY150.Ithasnoeffectonanyotherfunctionoftheunit.Thecontrolsensestheambientrelativehumidityofthespaceinwhichitislocated.


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WiththefanintheAUTOmode,thefanwilloperateonlywhenneededbyotherfunctionsofthesystem.Thefanwillremainoffunlessthesystemisdehumidifyingand/orventilating.ThefanalwaysrunsduringdehumidicationandventilationandthefanOiconwillbelit.Tocompletelyturnthesystemoff,usetheON/OFFbuttonasdescribedearlier.ToadjusttheventilationmodeseeSection3.7.

5.3H Damper Operation and Setting (Ventilation) Manual/Hold ModeQuestDRY150unitscanbeinstalledtoincorporateoptionalventilation.Thedampersettingcontrolstheventilationfunctionofthesystem.Ithasnocontroloverthedehumidicationfunction,althoughtheventilationfunctioncanandshouldbeusedtodrythespacedependingontheclimateandtheoutsideairconditions.RefertotheappropriateQuestDRY150manualformoreinformation.

Inordertoprovideventilation,thedampermustbeopen(ON)andthefanmustberunning.Thecontrollertakescareofthesetwofunctionsautomatically,sothatwheneverthedamperisopen(ON),thefanisrunning.

TheventilationindicatorOwillbedisplayedwhenevertheunitisventilating.ThefanoperationindicatorOwillalsobelit.

Therearethreedamperoperationmodes,OPEN HOLD,CLOSED HOLDandPROGRAM

(denotedbyON TIME OFF TIME.Refertosection3.8).WiththedamperintheOPEN HOLDmode,thedamperwillbeopenandthefanofthesystemwillbeoperatinginordertointroducefreshairintothespace.Usethismodeforcontinuousfreshairventilation.Thefanisalwaysonwhenthedamperisopen.WheninCLOSED HOLDmode,thedamperwillnotopenandthesystemwillnotventilate.

WheninthePROGRAMmode,thecontrolwilloperatethedamperandfan(ventilate)accordingtotheprogrammedventilationschedule(SeeSection3.8).

To set the damper operation:

1. PresstheVENTbutton.Thecurrentsettingwillbegintoashonthedisplay.Releasethebutton.

2. PresstheVENTbuttonagaintotogglebetween

open,closedandprogram.3. Leavethecontrolalonefor10secondstoselecttheindicateddampermodeandreturntoHOME.

5.3I Intermittent or Programmed Ventilation

Thesystemwilloperatetheventilationfunctionaccordingtothecurrentventilationprogram.Thecontrolneedstobeprogrammedtoturntheventilationfunctiononandoffatthedesiredintervals.Thisisdonebyprogrammingtheventilationtimer.

TherearetwoprogramsavailableforventilationMondaythroughFriday.TherearealsotwoprogramsforSaturdayandSunday.Nootherchoiceofdaysisavailable.

Eachprogramhas:

ASTARTtimeofdaywhentheventilationschedulebegins.

AnOPEN FORdurationfortheamountoftimethedamperstaysopenin5minuteintervals,from0to60.

ACLOSED FORdurationwhichclosestheventforaspeciedtimein5minuteintervalsfrom0to60.


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Example:

1. PressPROGRAM ENTERbutton.Thefollowingmenuappears:

2. Usingtheup/downRHbuttons,selectPROGRAM.Thefollowingmenuappears:

You can select from:

MON-FRIorSAT-SUNforseparateweekday/weekendschedulesorMON-SUNwhichgivesyouequalweekday/weekendschedules.

MenuwhenyouselectMON-FRIorSAT-SUN:

1. Enterthestartingtimeforweekdaysusingtheup/downRHkeystochangethetime.

2.PresstheprogramenterkeytotoggletotheOPEN FORsetting.Usingtheup/downRHkeys,changethedurationthatthedamperwillventilatefreshair.

3.Presstheprogramenterkeytotoggletotheclosedforsetting.Usingtheup/downRHkeys,changethedurationthatthedamperwillremainclosedbetweenventilation.

Fortheexamplegiven,startingat8:00AMinthemorning,thecontrolwillventilatefreshairfor15minutesthenstopfor15minutes.Thisscheduleof15minutesopen;15minutesclosedwillcontinueuntilthestarttimeofthenightschedule.

PressPROGRAM ENTERagaintogototheMON-FRInightschedule.RepeatthestepslistedaboveforthisandtheSAT-SUNdayandnightschedules.

Whenyoureturntothemainprogrammenu,usetheup/downRHbuttonstoselectRUN PROGRAM.

PressPROGRAM ENTERtoruntheprogram.Thedisplaywillappearasfollows:

5.3J Temperature Cutout ProgrammingQuestDRY150unitsproduceheatwhendehumidifying.Dependingonoutsideconditions,theventilationfunctionmayintroducewarmairintothespace.Occasionally,theoperationoftheQuestDRY150mayproduceenoughheattodrivetemperaturesup.ThetemperaturecutoutfeaturedisablesallQuestDRY150operationsiftemperaturesreachcutoutsetpoint.Inmostinstallationsthisfeaturewillnotneedtobeused.Iftemperaturecutoutisdesired,programthesetpointbypressingthePROGRAM ENTERbutton.PressRHuntilTEMP CUTOUTisashing.UseRHuporRHdowntoadjustsetpoints.


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5.3K Default SettingsUponinitialpower-uporafterprolongedpoweroutages(morethan30minutes),theDEH3000isprogrammedwiththefollowingdefaults.Aspaceisprovidedtomakenoteofuserinputs.

Setting Default My SettingRHsetpoint 50% __________

VentilationOperation Closed __________

FanSetting Auto __________

TempCutout 80% __________

If you have questions about the DEH 3000, please call Therma-Stor LLC at1-800-533-7533 or email us at [email protected] or [email protected]


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6. Maintenance

6.1 Standard Air FilterTheQuestDRY150isequippedwithapleatedclothairlter.Thisltershouldbecheckedeverysixmonths.Operatingtheunitwithadirtylterwillreducedehumidiercapacityandefciencyandmaycausethecompressortocycleoffandonunnecessarilyonthedefrostcontrol.

Toaccesstheairlter,removethelteraccesspanelfromtheendoftheQuestDRY150.TheltershouldbereadilyvisibleandcanberemovedbypullingthemstraightoutoftheQuestDRY150.

Thepleatedclothltercangenerallybevacuumedcleanseveraltimesbeforeneedingreplacement.Replacementlterscanbeorderedfromthefactoryorpurchasedlocallyifavailable.DO NOToperatetheunitwithoutthestandardlterorwithalesseffectivelterthanthestandardlter.Theheatexchangecoilsinsidetheunitcouldbecomecloggedandrequiredisassemblytoclean.Filternon-complianceinvalidatestheproductwarranty.

6.2 High Efciency Air FilterAnoptionalhighefciencypleatedmicroglasspaperlterisavailablefortheQuestDRY150.Thislterisratedas90%-95%efcientbytheASHRAEDustSpottestmethod52-76.Thehighefciencypleatedmicroglasspaperltershouldbeusedinconjunctionwiththestandardlter,andplaceddirectlybeneaththestandardlter.

Thislterisabletoremoveallergycausingparticlesfromtheairstream.Thehighefciencylterhasamuchlargersurfaceareathanthestandardlter,thusthestandardltermayneedtobecleanedorreplacedseveraltimesbeforethehighefciencylterrequiresreplacement.Becarefulnottodamagethefabricmediawhenhandlingthehighefciencypleatedpaperlter.Donotattempttocleanthehighefciencypleatedpaperlter.Itshouldbereplacedwhenitbecomesrestrictive.

6.3 Impeller Fan Oiling

Theimpellerfanmotorisfactorylubricatedformanyyearsofnormaloperation,andnofurtheroilingisrequired.

6.4 Optional Fresh Air ReturnCheckandcleanthescreenontheoutdoorfreshairreturnseasonally.Thescreenmaybecomepluggedduringtheseasonswhentherearemanyparticlesintheoutdoorair.

7. Service

7.1 WarrantyAwarrantycerticatehasbeenenclosedwiththisunit;readitbeforeanyrepairisinitiated.Ifawarrantyrepairisrequired,callthefactoryrstat1-800-533-7533forwarrantyclaimauthorizationandtechnicalassistance.


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7.2 Technical DescriptionTheQuestDRY150usesarefrigerationsystemsimilartoanairconditioner'storemoveheatandmoisturefromincomingair,andaddheattotheairthatis

discharged.

Hot,high-pressurerefrigerantgasisroutedfromthecompressortothecondensercoil(SeeFigure3).Therefrigerantiscooledandcondensedbygivingupitsheattotheairthatisabouttobedischargedfromtheunit.Therefrigerantliquidthenpassesthroughalter/drierandcapillarytubingwhichcausestherefrigerantpressureandtemperaturetodrop.Itnextenterstheevaporatorcoilwhereitabsorbsheatfromtheincomingairandevaporates.Theevaporatoroperatesinaoodedcondition,whichmeansthatalltheevaporatortubescontainliquidrefrigerantduringnormal

operation.Aoodedevaporatorshouldmaintainnearlyconstantpressureandtemperatureacrosstheentirecoil,frominlettooutlet.

Themixtureofgasandliquidrefrigerantentertheaccumulatorafterleavingtheevaporatorcoil.Theaccumulatorpreventsanyliquidrefrigerantfromreachingthecompressor.Thecompressorevacuatesthecoolrefrigerantgasfromtheaccumulatorandcompressesittoahighpressureandtemperaturetorepeattheprocess.

7.3 Troubleshooting

No dehumidication, neither impeller fan nor compressor run with fan switch and ventilation timer OFF.

1. Unitunpluggedornopowertooutlet.

2.Humiditycontrolsettoohighordefective(Sec.3.3&5.7A)

3.Looseconnectionininternalorcontrolwiring.

4.DefectiveCompressorrelay.

5.Defectivecontroltransformer.

6.LowpressureControlopen(Sec3.7&5.10).

7.OptionalCondensatePumpSafetySwitchopen(Sec5.11).

No dehumidication, compressor does not run but impeller fan runs with fan switch and ventilation timerOFF and humidity control turned to ON.

1.Defectivecompressorruncapacitor(Sec.5.6).2.Badconnectionincompressorcircuit(SeeFig.4).

3.Defectivecompressoroverload(Sec.5.6A).

4.Defectivecompressor(Sec.5.6).

5.Defrostthermostatopen(Sec.5.8).

Refrigeration System of Quest DRY150


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Impeller fan runs with fan switch and ventilation timer OFF, but compressor cycles on & off.

1.Lowambienttemperatureand/orhumiditycausingunittocyclethroughdefrostmode.

2.Defectivecompressoroverload(Sec.5.6A).

3.Defectivecompressor(Sec.5.6).

4.Defrostthermostatdefective(Sec.5.8).

5.Dirtyairlter(s)orairowrestricted.

6.Lowrefrigerantcharge,causingdefrostcontroltocycle.

7.Badconnectionincompressorcircuit.

Impeller fan does not run with fan switch in either position. Impeller fan does not run with ventilationtimer activated. Compressor runs briey but cycles on & off with humidity control turned to ON.

1.Looseconnectioninimpellerfancircuit(SeeFig.4).

2.Obstructionpreventsimpellerfanrotation.

3.Defectiveimpellerfan.

4.Defectiveimpellerfanrelay.5.Defectiveimpellerfancapacitor.

Impeller fan runs with fan switch ON. Impeller fan does not run with ventilation timer activated.

1.Defectiveventilationtimer.

2.Timenotcorrectonventilationtimer.

3.Ventilationtimersettomanual&switchedOFF.

4.Defectivefanswitch.

Evaporator coil frosted continuously, low dehumidifying capacity.

1.Defrostthermostatlooseordefective(Sec.5.8).

2.Lowrefrigerantcharge3.Dirtyairlter(s)orairowrestricted.

4.Excessivelyrestrictiveductingconnectedtounit.

Unit not providing ventilation. Ventilation timer not operating correctly.

1. Iftimerisnotfunctioningcorrectlyresettimerandreprogram(Sec.3.5).

2.Checkcontrolwireconnections(checkconnectionsatfreshairdamperalso).

3.Defectivefreshairdamper(Sec.5.9).

4.Defectivefanswitch.

Unit removes some water, but not as much as expected.

1.Airtemperatureand/orhumidityhavedropped.2.Humiditymeterandorthermometerusedareoutofcalibration.

3.Unithasentereddefrostcycle(Sec.5.8).

4.Airlterdirty(Sec.4.1&4.2).

5.Defectivedefrostthermostat(Sec5.8).

6.Lowrefrigerantcharge(Sec.5.4).


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7.6A Checking Compressor Motor Circuits

PerformthefollowingtestsiftheimpellerfanrunsbutthecompressordoesnotwiththefanswitchandventilationtimerOFFandthehumiditycontrolON.

1.Unplugtheunit;removethecabinetsideandtheelectricalconnectioncoveronthecompressortop.

2.PlugintheunitandturnthehumiditycontroltoON.Checkfor110voltsfromcompressorterminalRtooverloadterminal3usinganACvoltmeter.Ifvoltageispresent,gotostep3.Ifnovoltage,theremaybealooseconnectioninthecompressorcircuit.Testeachcomponentforcontinuity.Seetheappropriatesectionifadefectissuspected.

3.Unplugtheunit,andthendisconnecttheredandyellowwiresfromcompressorterminalsR&S.Usinganohmmetercheckcontinuitybetweenthepointslistedbelow.

4.CompressorterminalsCandS:Nocontinuityindicatesanopenstartwinding.Thecompressormustbereplaced.Normalstartwindingresistanceis3to7ohms.

5.CompressorterminalsCandR:Nocontinuityindicatesanopenrunwinding.Thecompressormustbereplaced.Normalrunwindingresistanceis.5to2ohms.

6.CompressorterminalCandoverloadterminal1:Nocontinuityindicatesadefectiveoverloadlead.

7.Overloadterminals1and3:Ifthereisnocontinuity,theoverloadmaybetripped.Wait10minutesandtryagain.Ifthereisstillnocontinuity,itisdefectiveandmustbereplaced.

8.CompressorterminalCandcompressorcase:Continuityindicatesagroundedmotor.Thecompressormustbereplaced.

9.Disconnectthewiresfromtheruncapacitor.SettheohmmetertotheRx1scale.Thecapacitorisshortedandmustbereplacedifcontinuityexistsacrossitsterminals.IfthereisnoneedlemovementwiththemetersetontheRx100000scale,thecapacitorisopenandmustbereplaced.

10.Reconnectthewirestothecompressorandcapacitor.Pluginandturnontheunit.Ifthecompressorfailstostart,replacetheruncapacitor.

11.Iftheunitstilldoesnotstart,addingahard-startkit(relay&capacitor)willprovidegreaterstartingtorque.Ifthisdoesn'twork,thecompressorhasaninternalmechanicaldefectandmustbereplaced.

7.6B Replacing a Burned Out Compressor

Therefrigerantandoilmixtureinacompressorischemicallyverystableundernormaloperatingconditions.However,whenanelectricalshortoccursinthecompressormotor,theresultinghightemperaturearccausesaportionoftherefrigerantoilmixturetobreakdownintocarbonaceoussludge,averycorrosiveacid,andwater.Thesecontaminantsmustbecarefullyremovedotherwiseevensmallresidueswillattackreplacementcompressormotorsandcausefailures.

Thefollowingprocedureiseffectiveonlyifthesystemismonitoredafterreplacingthecompressortoinsurethatthecleanupwascomplete.

1.Thisprocedureassumesthatthepreviouslylistedcompressormotorcircuittestsrevealedashortedoropenwinding.

2.Removeandproperlydisposeofthesystemcharge.DO NOTventtherefrigerantorallowittocontactyoureyesorskin.

3.Removetheburnedoutcompressor.Userubberglovesifthereisanypossibilityofcontactingtheoilorsludge.

4.Tofacilitatesubsequentsteps,determinethetypeofburnoutthatoccurred.Ifthedischargelineshowsnoevidenceofsludgeandthesuctionlineisalsocleanorperhapshassomelightcarbondeposits,theburnoutoccurredwhilethecompressorwasnotrotating.Contaminantsarethereforelargelyconnedtothecompressorhousing.Asingleinstallationofliquidandsuctionlinelter/drierswillprobablycleanupthesystem.


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Ifsludgeisevidentinthedischargeline,itwilllikelybefoundinthesuctionline.Thisindicatesthecompressorburnedoutwillrunning.Sludgeandacidhavebeenpumpedthroughoutthesystem.Severalchangesoftheliquidandsuctionlter/drierswillprobablybenecessarytocleansethesystem.

5.Correctthesystemfaultthatcausedtheburnout.Consultthefactoryforadvice.

6.Installthereplacementcompressorwithanewcapacitorandanoversizedliquidlinelter.

Inarunningburnout,installanoversizedsuctionlinelter/drierbetweentheaccumulatorandcompressor.Thoroughlyushtheaccumulatorwithrefrigeranttoremovealltrappedsludgeandtopreventtheoilholefrombecomingplugged.Astandingburnoutdoesnotrequireasuctionlinelter/drier.

7.Evacuatethesystemwithagoodvacuumpumpandaccuratevacuumgauge.Leavethepumponthesystemforatleastanhour.

8.Operatethesystemforashortperiodoftime,monitoringthesuctionpressuretodeterminethatthesuctionlterisnotbecomingplugged.Replacethesuctionlter/drierifpressuredropoccurs.Ifasevererunningburnouthasoccurred,severallter/driersmayhavetobereplacedtoremovealloftheacidandmoisture.

NOTE: NEVER use the compressor to evacuate the system or any part of it.

7.6C Replacing a Compressor, Nonburn Out

Removetherefrigerantfromthesystem.Replacethecompressorandliquidlinelter/drier.Chargethesystemto50PSIGandcheckforleaks.Removethechargeandweighintherefrigerantquantitylistedonthenameplate.Operatethesystemtoverifyperformance.

7.7 Remote Controls

TheQuestDRY150iscontrolledbydevicesmountedonapanelthatisremotefromtheunit.Youmayormaynothavethedeviceslistedbelowdependingonthemodeloftheremotecontrolpanelyoupurchased.IftheQuestDRY150failstooperateasdesired,alwayscheckthesettingsofthecontrolstoinsurethattheyarecorrect.Checkthatthecontrolsarereceiving24VacfromtheQuestDRY150.ChecktheconnectionsbetweentheQuestDRY150,thecontrolpanel,andtheeldcontrolwiring.

7.7A Humidity Control

Thehumiditycontrolisanadjustableswitchthatcloseswhentherelativehumidityoftheairinwhichitislocatedrisestothedialsetpoint.ItopenswhentheRHdrops4to6%belowthesetpoint.IftheQuestDRY150doesnotrun,tryturningthehumiditycontrolclockwiseuntilitreachesthestopandtheknobpointerpointsatMaxDry(seebackofcontrolpanelcover).Ifitstilldoesnotrun,removethestopscrewfromthepanelandturntheknobfarther.Ifitthenruns,thehumiditycontrolisoutofcalibrationortheRHisbelow40%.

TheQuestDRY150isequippedwithanautomaticdefrostmechanism.IftheQuestDRY150operatesinconditionsthatdevelopfrostontheevaporator,itwillsensethefrostbuild-upandautomaticallydefrosttheevaporator.TheQuestDRY150maynotappeartobeoperatingcorrectlyduringthedefrostsequence,butoncethedefrostsequenceiscompleted,theQuestDRY150willresumedehumidifying.

7.7B Programmable Ventilation Timer

Theventilationtimercontrolstheimpellerfanandthemotorizedfreshairdamper.Whentheventilationtimerisactivated,theQuestDRY150willcirculatetheindoorair,andbringinfreshairfromoutside.Theventilationtimershouldbesetfortherequiredventilationoftheresidence.Thestructureshouldbeventilatedwithfreshairassuggestedbyapplicablecodesandstandards.

IftheQuestDRY150failstoventilateasexpected,checkthatthetimeonthetimeriscorrect.Forthetimertocarryouttheprogramschedule,theslideswitchintheupperleftcorneronthetimermustbesettoAUTO.TheslideswitchintheupperrightcorneroftheQuest DRY150mustbesettoRUN.Alsochecktheprogramsonthetimertobesurethatthetimeriscallingforventilationatthecorrecttimes.Ifthetimerfailstooperateoroperateserratically,resetthetimer;seesection4.5ofthismanual.


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7.8 Defrost ThermostatThedefrostthermostatisattachedtotherefrigerantsuctiontubebetweentheaccumulatorandthecompressor.Itwillautomaticallyshutthecompressoroffifthelowsiderefrigeranttemperaturedropsduetoexcessivefrostformationontheevaporatorcoil.Theimpellerfanwillcontinuetorun,causingairtoow

throughtheevaporatorcoilandmelttheice.Whentheicehasmelted,theevaporatortemperaturewillriseandthethermostatwillrestartthecompressor.

7.9 Electric Ventilation DamperTheelectricventilationdamperiscontrolledbytheventilationtimer.Thedamperwillopenwhentheventilationtimerisactivatedtoallowfreshairintothestructurethroughthe6diameterfreshairinletduct.Theelectricventilationdamperwillremainclosedwhentheventilationtimerisnotactivatedtopreventover-ventilatingthestructurewhentheunitisdehumidifyingorrecirculatingtheindoorair.

Theelectricventilationtimeroperateson24Vacfromthecontrolcircuit. DO NOTconnecthighvoltagetothedampermotorordamagetothemotormayresult.DO NOTforcethebladeofthedamperbyhandordamagetothedampermotormayresult.

Thedamperopensinonedirectiononly.Thedamperrotatesveryslowly,allowsufcienttimeforthedampertocycle.Thedamperwilltakeapproximately1minutetocyclefromclosedtoopenorfromopentoclosed.

Iftheelectricventilationdamperfailstooperate:

1.Checkthatthewiringiscorrectandthatvoltageispresentatthedampermotor.

2.Checkforanyobstructioninsidethedamper.Iftheelectricventilationdamperfailstooperateafterperformingthesechecks,itmustbereplaced.

7.10 Condensate Pump KitAnoptionalcondensatepumpkitisavailablefromthefactoryforusewiththeQuestDRY150.Condensateisautomaticallypumpedtoaremotelocationwhenthewaterlevelinthepump'sreservoirrisestoclosetheoatswitch.

Thepumpalsocontainsasafetyoatswitch.Thewhiteleadsfromthisswitchextendfrombeneaththepumpcover.Thisswitchshouldbeinstalledinserieswiththeeldwirethatconnectstheblue(#5)leadfromtheQuestDRY150totheblue(#5)leadonthecontrolpanel.

Ifthepumpfails,thisswitchopensthecompressorcontrolcircuitandstopswaterproductionbeforethereservoiroverows.TheQuestDRY150willcontinuetoventilateorcirculateairasnormal,butwillnotdehumidifyuntilthisswitchcloses.


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Electric Schematics


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Pictorial Electrical Diagrams


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Item Part No Qty Description

1 4026477 1 HEATEXCHANGER

2 4026672 1 EVAPORATOR

3 4026934 2 CAPILLARYTUBES

.050"X.124"X59.00" 4 4026670 1 COMPRESSOR-TOSHIBA,8.1

KBTU,115V,60HZ

5 4026655 1 ACCUMULATOR

6 4025087 1 FILTER/DRIER

7 4026674 1 TUBE-CONDTOFILTER

8 4026472 1 TUBE-DISCHARGELINE

9 4026673 1 CONDENSOR

10 4026657 1 IMPELLER

11 4020924 1 RELAY/BLOWER

Item Part No Qty Description

12 4026687 1 45mFdCAPACITOR-COMPRESSOR

13 4022487 1 TRANSFORMER

14 4022484 1 RELAY/COMPRESSOR

15 4017021 1 15mFdCAPACITOR-IMPELLER16 4026932 1 COLLAR10INCH

17 4026947 1 COLLAROVAL10INCH

18 4026933 1 COLLARW/DAMPER6INCH

(NOTSHOWN)

19 4026221 4 LEVELINGFOOT

20 4021470 1 DEFROSTTHERMOSTAT

(NOTSHOWN)

4021648 1 DEFROSTTHERMOSTATCLIP

(NOTSHOWN)

21 4026660 1 WIRINGDIAGRAM

50

The Quest DRY 150

5

notshown

Service Parts List

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ITEM PART NO. QTY. DESCRIPTION

26 4024375 1 CheckDamper,10"Diameter(notshown)27 4022220 1 CondensatePumpKit,External

28 4024155 1 ControlPanelAssembly,Humidity/Fan29 4024125 1 ControlPanelAssembly,VentilationTimer&Humidity30 4023660 1 Controller,Humidity31 4023672 1 DuctDamper,6"Diameter,ElectricallyActuated(notshown)32 4024153 1 CoverforItems28&29(notshown)33 4021495 1 Knob,Black,.25"shaft34 4024150 1 Instructions,Humidity/Fan(notshown)35 4024122 1 Instructions,VentilationTimer&Humidity(notshown)36 4025560 1 Switch,Black,SPDT,On/Off37 4022486 1 Timer,7-Day,24Vac,Programmablenotshown 4024369 1 Merv11StandardFilter20"x16"x2"notshown 4025287 1 FilterBox

Optional Parts List

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Door And Collar Assembly

Door InstallInserttabonthebottomofthedoor,inbetweenthefoaminstallationandthemetalside.

Pushdownontheplasticdoorlatchandswingdoorshut.Oncethedoorisshutreleasethedoorlatch.

Collar InstallRemovethe2roundducts,3sealsandsmallbagofmountinghardwarefrominsidetherectangleopening.

Adheresealsontothebackofeachductandmounttheductstothefrontofthedehumidierusingscrewsprovided.

Collars andhardware arelocated here.

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Quest DRY150 Installation, Operation and Maintenance InstructionsQuest DRY150 Installation, Operation and Maintenance Instructions

Quest DRY150 Dehumidier Limited Warranty

WARRANTOR:

Therma-StorLLC

POBox8680,Madison,WI53708Telephone:1-800-533-7533

WHO IS COVERED: Thiswarrantyextendsonlytotheoriginalend-useroftheQuestDRY150dehumidier,andmaynotbeassignedortransferred.

FIRSTYEARWARRANTY:Therma-StorLLCwarrantsthat,forone(1)yeartheQuest DRY150dehumidierwilloperatefreefromanydefectsinmaterialsandworkmanship,orTherma-StorLLCwill,atitsoption,repairorreplacethedefectivepart(s),freeofanycharge.

SECOND THROUGH FIFTH YEAR WARRANTY:Therma-StorLLCfurtherwarrantsthatforaperiodofve(5)years,thecondenser,evaporator,andcompressoroftheQuest DRY150dehumidierwilloperatefreeofanydefectsinmaterialorworkmanship,orTherma-StorLLC,atitsoption,willrepairorreplacethedefectivepart(s),providedthatalllaborandtransportationchargesforthepart(s)shallbebornebytheend-user.

END-USER RESPONSIBILITIES:WarrantyservicemustbeperformedbyaServicerauthorizedbyTherma-StorLLC.Iftheend-userisunabletolocateorobtainwarrantyservicefromanauthorizedServicer,heshouldcallTherma-StorLLCattheabovenumberandaskfortheTherma-StorLLCServiceDepartment,whichwillthenarrangeforcoveredwarrantyservice.Warrantyservicewillbeperformedduringnormalworkinghours.

TheEnd-usermustpresentproofofpurchase(lease)uponrequest,byuseofthewarrantycardorotherreasonableandreliablemeans.Theend-userisresponsiblefornormalcare.Thiswarrantyonlyappliestoresidentialapplicationsanddoesnotcoveranydefect,malfunction,etc.resultingfrommisuse,abuse,lackofnormalcare,corrosion,freezing,tampering,modication,unauthorizedorimproperrepairorinstallation,accident,actsofnatureoranyothercausebeyondTherma-StorLLC'sreasonablecontrol.

LIMITATIONS AND EXCLUSIONS: IfanyQuestDRY150Dehumidierpartisrepairedorreplaced,the

newpartshallbewarrantedforonlytheremainderoftheoriginalwarrantyperiodapplicablethereto(butallwarrantyperiodswillbeextendedbytheperiodoftime,ifany,thattheQuestDRY150Dehumidierisoutofservicewhileawaitingcoveredwarrantyservice).

UPONTHEEXPIRATIONOFTHEWRITTENWARRANTYAPPLICABLETOTHEQUESTDRY150DEHUMIDIFIERORANYPARTTHEREOF,ALLOTHERWARRANTIESIMPLIEDBYLAW,INCLUDINGMERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE,SHALLALSOEXPIRE.ALLWARRANTIESMADEBYTHERMA-STORLLCARESETFORTHHEREIN,ANDNOCLAIMMAYBEMADEAGAINSTTHERMA-STORLLCBASEDONANYORALWARRANTY.INNOEVENTSHALLTHERMA-STORLLC,INCONNECTIONWITHTHESALE,INSTALLATION,USE,REPAIRORREPLACEMENTOFANYQUESTDRY150DEHUMIDIFIERORPARTTHEREOFBELIABLEUNDERANYLEGALTHEORYFORANYSPECIAL,INDIRECTORCONSEQUENTIALDAMAGESINCLUDINGWITHOUTLIMITATIONWATERDAMAGE(THEEND-USERSHOULDTAKEPRECAUTIONSAGAINSTSAME),LOSTPROFITS,DELAY,OR

LOSSOFUSEORDAMAGETOANYREALORPERSONALPROPERTY.Somestatesdonotallowlimitationsonhowlonganimpliedwarrantylasts,andsomedonotallowtheexclusionorlimitationofincidentalorconsequentialdamages,sooneorbothoftheselimitationmaynotapplytoyou.

LEGAL RIGHTS:Thiswarrantygivesyouspeciclegalrights,andyoumayalsohaveotherrightswhichvaryfromstatetostate.

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