thermastor Quest DRY 150 Manual

Installation, Operation and Maintenance Instructions
– Read and Save These Instructions –
This manual is provided to acquaint you with
the dehumidier so that installation, operation
and maintenance can proceed successfully.
Ultimate satisfaction depends on the quality
of installation and a thorough understanding
of this equipment. The dehumidier is built
around tested engineering principles and has
passed a thorough inspection for quality of
workmanship and function.
Quest DRY 150
Installation, Operation and Maintenance Instructions
P. O. Box 8680 Phone [phone]
Madison, WI 53708 Toll-Free 1-800-533-7533
www.thermastor.com [e-mail]
– Read and Save These Instructions –
Specifications subject to change without notice. TS-472
Revised 2/08
1
Quest DRY 150
Water Removal Rates (Pints/Day)
150 pints 80˚F, 60% (AHAM)
Quest DRY 150:
• Patentpending,optimizedair-to-airheat
exchanger.
• Requiresonly6.9amps/115V—halfthe
amountofcompetitors!
• Environmentally-friendlyR410A
refrigerant.
• High-efciency,long-lifeimpellerfan.
• Quietoperationandsuperiorhighstatic
pressureperformance.
• Pre-conguredforfreshairventilation.
• Industry-leading7.9pintsperkWh.
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Quest DRY 150 Installation, Operation and Maintenance Instructions
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Table of Contents
SafetyPrecautions..................................................... 3
1. IntendedApplication............................................ 4
2.Specications...................................................... 4
3.Installation4
 3.1 Location........................................................ 4
 3.2ElectricalRequirements................................. 5
 3.3CondensateWaterRemoval........................... 5
 3.4Ducting......................................................... 6
  3.4AInstallingDuctCollars.......................... 6
  3.4BDuctingforDehumidication................ 6
  3.4CDuctingforFreshAir............................. 6
  3.4DInstallationinaBasement.................... 7
  3.4EInstallationinaattic.............................. 8
  3.4FInstallationwith(2)HVACsystems......... 8
  3.4GInstallationwithoutanHVACsystem.... 8
 3.5QuietInstallation........................................... 8
 3.6NoiseAbatement........................................... 9
4.Controls ........................................................... 9
  4.1A Humidity/FanControlPanel
 WITHOUTFreshAirVentilationor...... 
 Damper.............................................. 9
  4.1B Humidity/FanControlPanelWITH...... 
 FreshAirVentilationandWITHOUT
   Damper.............................................. 9
  4.1C Humidity/FanControlPanelWITH
   FreshAirVentilationANDDamper... 10
  4.1DVentilationTimerandHumidity
   ControlWITHFreshAirAND
   MotorizedDamper........................... 10
  4.1E DEH3000DigitialControl
   WITHFreshAirANDDamper.......... 10
  4.1F DEH3000DigitalControlWITHOUT
   FreshAir........................................... 10
 4.2HumidityControlAdjustment...................... 10
 4.3Fan/FilterSwitch.......................................... 10
 4.4VentilationTimer......................................... 11
  4.4ASettingtheTime................................... 11
  4.4BVentilationSchedule............................ 11
  4.4CAutomaticorManualMode................ 11
  ControlsWiringDiagram............................. 12
5.DEH3000DigitalControl
 InstallationInstructions....................................... 13
 5.1.Specications.............................................. 13
 5.2.Installation................................................... 13
  5.2A InstallInstructions............................. 13
  5.2B Wiring.............................................. 13
  5.2C AuxillaryRelayOperation................ 14
  5.2D DehumidierLockout....................... 15
  5.2E Location........................................... 15
  5.2F Testing.............................................. 15
 5.3.Operation.................................................... 17
  5.3A Display............................................. 17
  5.3B Setting.............................................. 17
  5.3C On/OffSetting.................................. 17
  5.3D SettingClockTime............................ 17
  5.3E SettingRelativeHumiditySetpoint.... 17
  5.3F Operation......................................... 18
  5.3G FanSetting&Operation................... 18
  5.3H DamperOperationandSetting
   (Ventilation)...................................... 19
  5.3I Intermittent/ProgrammedVentilation 19
  5.3J TemperatureCutoutProgramming.... 20
  5.3K DefaultSettings................................ 21
6.Maintenance....................................................... 22
 6.1StandardAirFilter........................................ 22
 6.2HighEfciencyAirFilter.............................. 22
 6.3 ImpellerFanOiling...................................... 22
 6.4FreshAirReturn.......................................... 22
7.Service ......................................................... 22
 7.1Warranty.................................................... 22
 7.2Technicaldescription................................... 23
 7.3Troubleshooting........................................... 23
 7.4RefrigerantCharging................................... 25
 7.5ImpellerFanReplacement.......................... 25
 7.6Compressor/CapacitorReplacement............ 25
  7.6ACheckingCompressorMotorCircuits. 26
  7.6BReplacingBurnedOutCompressor..... 26
  7.6CReplacingCompressor-NonburnOut.. 27
 7.7RemoteControls.......................................... 27
  7.7AHumidityControl................................ 27
  7.7BVentilationTimer.................................. 27
 7.8DefrostThermostat....................................... 28
 7.9ElectricVentilationDamper.......................... 28
 7.10CondensatePumpKit................................. 28
ElectricalSchematic............................................... 29
PictorialElectricalDiagram..................................... 30
ServicePartsList..................................................... 31
OptionalPartsList.................................................. 32
DoorandCollarAssembly...................................... 33
Warranty ............................................................. 34

1-800-533-7533
Quest DRY 150 Installation, Operation and Maintenance Instructions
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FOR HVAC INSTALLER ONLY
Safety Precautions
Readtheinstallation,operationandmaintenanceinstructionscarefullybeforeinstallingandoperatingthis
device.ProperadherencetotheseinstructionsisessentialtoobtainmaximumbenetfromyourQuestDRY
150indoorairqualitysystem.
FOR HVAC INSTALLER AND OWNER ONLY
READ AND SAVE THESE INSTRUCTIONS
•ThedeviceisdesignedtobeinstalledINDOORSIN
ASPACETHATISPROTECTEDFROMRAINAND
FLOODING.
•Installtheunitwithspacetoaccessthebackorsidepanels
formaintenanceandservice.DONOTINSTALLUNIT
WITHTHESERVICEPANELSINACCESSIBLE.
•Avoiddirectingthedischargeairatpeople,oroverthe
waterinpoolareas.
•Ifusednearapoolorspa;becertainthereisNOchance
theunitcouldfallintothewater,besplashedandthatitis
pluggedintoaGFIGROUNDFAULTINTERRUPTOUTLET.
•DO NOT use the device as a bench or table.
•DONOTplacethedevicedirectlyonstructuralmembers.
Providevibrationisolationinordertominimizeoperational
vibrationand/ornoise.
• AdrainpanMUSTbeplacedundertheunitifinstalled
abovealivingareaoraboveanareawherewaterleakage
couldcausedamage

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Quest DRY 150 Installation, Operation and Maintenance Instructions
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1. Intended Application for Quest DRY 150
Fortheidealinstallation,drawairfromthecentralpartofthestructureandreturnittoisolatedareasof
thestructureliketherestrooms,utilityormechanicalroom,orcookingarea.Theductworkoftheexisting
heatingsystemcanbeusedtosupplyairtothestructure.
2. Specications
Model: QuestDRY150
IndoorAirQualitySystem
Electrical: 110-120VAC,6.9Amps,60Hz,grounded
WaterRemovalCapacity: 150pints/day@80°F,60%RH
OperatingTemp.Range: 56°Fmin.,100°Fmax.
AirFlow: 415CFM@0.0"WG
 365@0.4"WG
RefrigerantCharge: 2lb.,R-410.A
Ductconnections: Round10"&6"inlets,10"outlet(ovaled)
FilterSize: 2"X16"X16"
Size(w/oductcollars): 37"wideX22"highX205/8"deep
UnitWeight: 134lbs.
3. Installation
3.1 Location
TheQuestDRY150canbeinstalledinavarietyoflocationstomeettheowner'sneedsaslistedbelow.Inall
caseskeepthefollowingcautionsinmind:
• ItisdesignedtobeinstalledINDOORSINASPACETHATISPROTECTEDFROMRAINAND
FLOODING.
• Installtheunitwithspacetoaccessthebackandsidepanelsformaintenanceandserviceandalsoto
alloweasyaccesstotheltercoverpanel.DONOTINSTALLUNITWITHTHEFRONTPANELOR
FILTERCOVERPANELINACCESSIBLE.
• Avoiddischargingtheairdirectlyatpeople,oroverthewaterinpoolareas.
• Ifusednearapoolorspa,becertainthereisNOchancetheunitcouldfallintothewaterorbesplashed
andthatitispluggedintoaGROUNDFAULTINTERRUPTER.
• DONOTusetheQuestDRY150asabenchortable.
• DONOTplacetheQuestDRY150directlyonstructuralmembers.Providevibrationisolationinorderto
minimizeoperationalvibrationand/ornoise.
• AdrainpanMUSTbeplacedundertheunitifinstalledabovealivingareaoraboveanareawherewater
leakagecouldcausedamage.
FOR HVAC INSTALLER AND OWNER ONLY

1-800-533-7533
Quest DRY 150 Installation, Operation and Maintenance Instructions
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FOR HVAC INSTALLER ONLY
PlacetheQuestDRY150onsupportsthatraisethebaseoftheunitabovethetopoftheangesonthedrain
panbeneathit.RaisingtheQuestDRY150willhelptheunitdrainwithgravityow.DonotplacetheQuest
DRY150directlyonstructuralbuildingmemberswithoutvibrationabsorbersorunwantednoisemayresult.
TheQuestDRY150maybesuspendedwithsteelhangerstraps(plumberstape)orasuitablealternativefrom
structuralmembers,unitmustbesupportedfromunderneath.Don'thangfromsidesorends.Remember
toplaceadrainpanundertheunitifitissuspendedaboveanishedareaoraboveanareawherewater
leakagecouldcausedamage.
TheQuestDRY150shouldbelocatedneartheexistingairhandlingsystemtominimizetherequiredduct
workforconnectingtheQuestDRY150totheexistingairhandlingsystem.ThecontrolsfortheQuestDRY
150areremotefromtheunitandmustbelocatedinthespacethatistobeconditioned.Thecontrolsare
lowvoltage(24volt)andshouldbeconnectedtotheQuestDRY150withlowvoltagethermostatcable.
Iffreshairventilationisdesired,thoughtshouldbegiventothelocationforthefreshairducting.A6"round
insulatedductwillhavetobeinstalledontheQuestDRY150andruntotheoutsideofthestructureto
bringinfreshair.Usean8"insulatedroundductforlengthsofmorethan50feetorifmorethan100CFMis
needed.Consultlocalcodesfornecessarydistancesfromexhaustportswheninstallingfreshairreturn.
3.2 Electrical Requirements
WARNING: DO NOT ALLOW THE YELLOW LEAD FROM THE QUEST DRY 150 TO CONTACT THE RED
LEAD OR WHITE LEAD FROM THE Quest DRY 150 OR DAMAGE TO THE TRANSFORMER WILL RESULT.
TheQuestDRY150plugsintoacommongroundedoutlet.Itdrawsaround6.9Ampsundernormal
operatingconditions.Ifusedinawetarea(pool,sparoom,orbasementpronetoooding),agroundfault
interrupterprotectedcircuitisrequired.
Installtheremotecontrolpanelinacentralareaofthestructurewhereitwillsensetherelativehumidity
ofthestructureaccurately.Donotinstallthecontrolpanelwhereitmaynotaccuratelysensetherelative
humiditysuchasnearHVACsupplyregisters,nearexteriordoors,ornearapoolorspa.Theinstallermust
supplythewiringbetweentheQuestDRY150andthecontrolpanel.Besuretosafelyroutethecontrol
wiringtopreventdamageduringinstallation.BecarefulnottocrossthewireswhenconnectingtheQuest
DRY150andtheremotecontrolpanelordamagetothetransformermayresult.
TheremotecontrolsoftheQuestDRY150arepoweredbyalowvoltagecircuit(24Vac)andmust
NEVERcontactorbeconnectedtoahighvoltagecircuit.ThecontrolwiresleavingtheQuestDRY150
andtheremotecontrolpanelsarenumberedandcolor-codedtopreventconfusion.Someofthecontrol
wiresleavingtheQuestDRY150maynotbeusedwithcertaincontrolpanelsandshouldbeleftsafely
disconnectedwithwirenutstapedontothestrippedends.Besuretoconsulttheelectricalschematicinthis
manualorinsidetheaccesspaneloftheQuestDRY150beforemakingthecontrolconnections.
3.3 Condensate Water Removal
Condensatedrainsbygravityviathedrainport.Use3/4"
maleNPTPVCpipe.Routedrainpipetodrain.Installatrap
ifpossible.Takecarewheninstallingdrainpipetodrain
port.Useanadjustablewrenchtosecurethedrainport.An
optionalcondensatepumpkitmaybeinstalledifaliftis
requiredtodisposeofthecondensate.Thecondensatepump
kitcanbeordereddirectlyfromthefactory.Seetheoptional
partslistforinformationonthekit.
1.00"
External drain trap on unit
is recommended
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3.4 Ducting
3.4A Installing Duct Collars
TheQuestDRY150isequippedwith10"and6"roundinletcollarsanda10"round(ovaled)exhaustcollar.
Followinstructionsincludedwithcollars.
3.4B Ducting for Dehumidication
Fortheidealinstallation,drawairfromthecentralpartofthestructureandreturnittotheisolatedareas
ofstructure.Theductworkoftheexistingheatingsystemcanbeusedtosupplyairtothestructure.Ifthe
existingsupplygoestoisolatedareasofthestructure,dischargethesupplyoftheQuestDRY150intothe
supplyoftheexistingheatingsystem.Iftheexistingheatingsystemincorporatesacentralsupply,installation
ofaseparatesupplyductfromtheQuestDRY150toeachisolatedareaisrecommended.DONOTdraw
airdirectlyfromtheisolatedareas.Youmaydrawairfromareasthatareopentothestructure.Allexible
ductingconnectedtotheQuestDRY150shouldbeULlisted.
TheinletoftheQuestDRY150isthe10"diameterholeinthelterenclosureoftheunit.A10"roundcollar
issuppliedwiththeunittoattachtoroundduct.Theductmaybepermanentlyattachedtothecollar.A6"
roundcollarisprovidedwiththeunittoattachtothe6"holeinthelterenclosure.The6"collarshouldbe
cappediffreshmake-upairisnotdesired.Iffreshmake-upairisdesired,seeSection3.4C.
A10"round(ovaled)collarissuppliedwiththeunitfortheoutletoftheQuestDRY150.
AlengthofexibleductingonallQuestDRY150ductconnectionsisrecommendedtoreducenoiseand
vibrationtransmittedtorigidductworkinthestructure.
DuctingtheQuestDRY150asmentionedinSections3.4A-3.4Grequiresconsiderationofthefollowing
points:
Duct Sizing: Fortotalductlengthsupto25',useaminimum10"diameterroundorequivalentrectangular.
Forlongerlengths,useaminimum12"diameterorequivalent.Grillsordiffusersontheductendsmustnot
excessivelyrestrictairow.
Isolated Areas:Effectivedehumidicationmayrequirethatductingbebranchedtoisolated,stagnantareas.
Use8"orlargerdiameterbranchductingtoeachoftwoorthreeareas,use6"orlargertoeachoffouror
moreareas.
Connecting to existing HVAC systems: Anoptional10"checkdamperisavailablefromthefactorytoprevent
reverseowthroughtheQuestDRY150.IftheQuestDRY150isductedtothesupplyductingairhandler,
itisrecommendedthatthecheckdamperbeplacedintheQuestDRY150supplyduct.Contactthefactory
whenconnectingtoastaticpressureofgreaterthanorequalto+.5"WG.
3.4C Ducting for Fresh Air
Freshaircanbebroughtintothestructurebyconnectinganinsulatedductfromoutsidetothe6"QuestDRY
150inletandbyturningonthefanswitchoractivatingthehumiditycontrol(onunitswiththehumidity
controlpanel).Activatetheventilationtimeronunitswiththeventilatingandhumiditycontrolpaneltobring
infreshair.RefertoSection4.5forprogramminginstructionsfortheventilationtimer.Advantagesofthis
formofventilationinclude:
1.Outsideairislteredbeforeenteringthebuilding.
2.OutsideairwillbedehumidiedbeforeenteringiftheQuestDRY150isrunningindehumidicationmode. 
3.Drawingairfromoutsideandblowinginsideaidsinslightlypressurizingthestructure.Thishelpsprevent
dirtyandhumidairfromenteringelsewhere.Italsoreducesthepotentialforcarcinogenicradongasto
enterandprovidesmake-upairforopencombustionandexhaustdevicesliketheclothesdrier,replace,
andwaterheater.
4.Adequateexhaustfansarerecommendedthroughoutthestructure(e.g.,restrooms).
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Incoldclimatesorareaswheretheoutdoordewpointislowattimes,ventilationcanbeusedtodehumidify
thestructure.Thisisaccomplishedbybringingthedry,lowdewpointairintothestructureduringthese
times.Thisapproachisoftenmoreeconomicalthanrunningthedehumidiertoremoveexcessmoisture
fromthestructure.Incoldclimates,itiscriticaltoadequatelyventilatetoreducetheinsidemoisture
contenttoavoidmoistureaccumulatinginthewallcavities.Forexample;inastructurethatexperiences
condensationontheinteriorsurfaceofthewindowsduringthewinter,increasingtheamountofventilation
willoftencuretheproblem.
Aninsulated6"diameterductisgenerallysufcienttoprovideupto125CFMofoutsideair.Largequantities
ofoutsideairwilleitherpositivelyornegativelyimpacttheperformanceoftheQuestDRY150,depending
uponinsideandoutsideairconditions.Consultthefactorybycalling1-800-533-7533forrecommendations
regardingtheuseofhigherowswithyourspecicapplication.
Theoutsideairductshouldbeconnectedtothe6"roundcollaronthelterenclosureoftheunit.The6"
roundcollarincludesamanualdamper.Adjustthemanualdampertoprovidethedesiredamountoffresh
airforventilation.Theamountoffreshairshouldbebasedonthesizeandoccupancyoftheresidence.
Ifyouareunsureofyourventilationairrequirements,consultthefactorybycalling1-800-533-7533for
assistance.
3.4D Installation in a Basement or Crawlspace with an Existing Forced Air HVAC System
Itisrecommendedthatanew,separatereturnductbeinstalledfortheQuestDRY150fromacentralareaof
thestructure.Ifthisisnotpossible,andiftheexistingsystemhasmultiplereturns,selectonetodisconnect
fromtheexistingforcedairsystemanduseitforthededicatedQuestDRY150return.Alwaysselectareturn
fromacentrallocationinthestructureinanareathatisalwaysopentotherestofthestructure.Donotusea
returnfromaroomthatmayhaveitsdoorclosedmuchofthetime.
IfthestructureinwhichtheQuestDRY150istobeinstalledhasanexistingforcedairHVACsystem,utilize
theHVACsystemtomaketheQuestDRY150installationeasier.
Basement Installation:Installaseparate10"returnfortheQuestDRY150inacentralareaofthestructure.
DuctthesupplyoftheQuestDRY150toanoptional10"x10"x10"tee/damperthatis20%opentothe
basement.Thisallowstheabilitytodischargeavariableamountofdehumidiedairintoabasementthat
maynotbewellservedbytheexistingductsystem.Ducttheothersideoftheteetotheairsupplyofthe
existingHVACsystem.Abackdraftdamperisrequiredintheductbetweenthe10"teeandthecentral
supplyducttopreventairfrombeingdischargedintothebasementduringcentralfanoperation.Connect
aductfromoutsidetothe6"collarofthe
QuestDRY150ifyouwishtoprovidefreshair
ventilation.
Crawl Space Installation:Installaseparate
returnfortheQuestDRY150inacentralarea
ofthestructure.DuctthesupplyoftheQuest
DRY150toa10"x10"x10"tee/damperthat
is20%opentothecrawlspaceifdesired.Duct
theothersideoftheteetotheairsupplyof
theexistingHVACsystemventilation.Connect
aninsulatedductfromoutsidetothe6"collar
oftheQuestDRY150ifyouwishtoprovide
optionalfreshair.
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3.4E Installation in a Ceiling Cavity with an Existing Forced Air HVAC System
ALWAYSinstallacatchpanwithadrainand/oroatinterruptswitchforcondensateundertheQuestDRY
150inanattictoreducelikelihoodofwaterdamage.
LocateaseparatereturnfortheQuestDRY150inacentralareaofthestructure.Ductthesupplyofthe
QuestDRY150totheairsupplyoftheexistingHVACsystem.Connectaninsulatedductfromoutsideto
the6"collaroftheQuestDRY150ifyouwishto
providefreshairventilation.Adjustdamperinthe
collartoprovidethedesiredamountoffreshair.
Usingaremotecontrol,programtheunittobring
inthedesiredamountoffreshair.
3.4F Installation in a Structure with Two Forced
Air HVAC Systems
TheQuestDRY150canbeinstalledintotwo
typicalHVACductingsystems.Installaseparate
returnfortheQuestDRY150asdirectedabove.
Dischargeairfromthedehumidiershouldbe
splitandroutedtoeachsupplyductingsystem.
Abalancingdamperandabackdraftdamper
isrequiredineachductbetweentheQuest
DRY150andtheHVACductingsystem.This
allowsairowtobeadjustedandpreventsowofairbetweentheductingsystems.Contactthefactoryfor
assistance,ifnecessary.
3.4G Installation in a Structure with No Existing Forced Air HVAC System
WheninstallingtheQuestDRY150inastructurethatdoesnothaveaforcedairHVACsystem,asingle
returnfortheQuestDRY150shouldbeinstalledincentralopenareaofthestructure.DONOTlocatethe
returninarestroomorakitchenorcookingarea.ThesupplyoftheQuestDRY150shouldbelocatedinthe
remoteareasofthestructure(suchasbedrooms,den,etc.).Byductingthisway,theairinsidethestructure
willcirculatethroughtheQuestDRY150tobelteredanddehumidied.Avoiddischargingalltheairfrom
thedehumidierinonelocationtopreventheatbuildupinthatarea.4"diameterductisrecommendedfor
branchestothesmallerareas,6"diameterductisrecommendedforbranchestolargerareas.Refertosection
3.4Bforbranchductsizing.Connectaninsulatedductfromoutsidetothe6"collaroftheQuestDRY150if
youwishtoprovidefreshairventilation.
3.5 Quiet Installation
Considercompressionvibrationandairownoiseduringinstallation.Useofexductand/orvibration
isolationmaterialsduringmountingandductingwillresultinquieteroperation.
3.6 Noise Abatement
AlengthofexibleductingonallQuestDRY150ductconnectionsisrecommendedtoreducenoiseand
vibrationtransmittedtorigidductworkinthestructure.
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4. Controls
Allcontrolpanelsshouldbemountedinacentralareaofthestructurewhereitcanaccuratelysensethe
humidityoftheairinthelivingspaceandbeaccessed.Allcontrolsrequireeldwiringfromtheunitlocation
tothepanelmountlocation.
To determine how each control operates the Quest DRY 150, it must rst be determined which control is
being used and whether or not the Quest DRY 150 is ducted for fresh air ventilation. Refer to appropriate
section.
Humidity/Fan Control Panel (P/N 4024155) (Figure 1)
4.1A Humidity/FanControlPanelWITHOUTFreshAir
VentilationorDamper
4.1B Humidity/FanControlPanelWITHFreshAir
VentilationandWITHOUTDamper
4.1C Humidity/FanControlPanelWITHFreshAir
VentilationANDDamper
Ventilation Timer/Humidity Control Panel (P/N 4024125)
(Figure 2)
4.1D VentilationTimerandHumidityControlWITHFreshAirANDMotorized
Damper
DEH 3000 Digital Control (P/N 4024539) (Figure 3)
4.1E DigitalControllerWITHFreshAirANDDamper
4.1F DigitalControllerWITHOUTFreshAir
4.1A Humidity/Fan Control Panel WITHOUT Fresh Air Ventilation or Damper
Thehumidity/fancontrolpanelautomaticallycontrolsthehumidityofthespace.Thehumidity/fancontrol
panelcontainsanadjustablehumiditycontrolandafanswitch.Thepanelhasacoverthatmustremainopen
totheairwithinthelivingspaceforaccuratehumiditysensing.Whenthefanswitchisinthe“ON”position,
airwillbecontinuallylteredandcirculatedthroughoutthestructure.Forhumiditycontroloperationreferto
section4.2.
4.1B Humidity/Fan Control Panel WITH Fresh Air Ventilation and WITHOUT Damper
Thehumidity/fancontrolpanelautomaticallycontrolsthehumidityofthespace.Thehumidity/fancontrol
panelcontainsanadjustablehumiditycontrolandafanswitch.Thepanelhasacoverthatmustremainopen
totheairwithinthelivingspaceforaccuratehumiditysensing.Outsideairiscontinuallyintroducedwhenever
fanis“ON.”Manualoperationoffanlterswitchcontrolsoutsideairventilation.Sincethefanoperates
whenevertheQuestDRY150isdehumidifyingoutsideairwillalsobeintroduced.Forhumiditycontrol
operationrefertosection4.2.
4.1C Humidity/Fan Control Panel WITH Fresh Air Ventilation AND Damper
Inthisconguration,amotorizeddamperhasbeeninstalledinthefreshairduct.Whenthefan/lterswitch
isinthe“OFF”position,thedamperisclosed.TheQuestDRY150willthencirculateanddehumidifyairto
providehumiditycontrol.
Figure 1: Humidity/Fan
Control Panel
Part No. 4024155
Figure 2: Ventilation Timer
and Humidity Control Panel
Part No. 4024125
Figure 3: DEH 3000 Digital
Control (P/N 4024539)
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Whenthefan/lterswitchisinthe“ON”position,themotorizeddamperwillopenandthefanwillrun,
introducingoutsideair.Theunitmayormaynotbedehumidifyingintheventilationmode,dependingon
thehumiditycontrolsetting.SeeSection4.2forhumiditycontroloperation.
4.1D Ventilation Timer and Humidity Control WITH Fresh Air AND Motorized Damper
Refertosections4.7through4.9C.
4.1E DEH 3000 Digital Control WITH Fresh Air AND Damper
RefertoSection5.
4.1F DEH 3000 Digital Control WITHOUT Fresh Air
RefertoSection5.
4.2 Humidity Control Adjustment
Setthehumiditycontroltothedesiredhumiditylevelforthestructure.Turningtheknob
clockwiseresultsinadriersetting.Seethebackofthecontrolpanelcoverforsetpoints.
Thedehumidierwillruncontinuouslyuntiltherelativehumidity(RH)isreducedtothe
humiditycontroldialsetting.SettingthehumiditycontroltolowerRHlevelswillNOT
increasethedehumidicationrate;theunitwillsimplyrunlongertoreducetheRHtothe
setting.TheQuestDRY150unit(andrefrigerant-baseddehumidiersingeneral)willreduce
awarmspace’sRHtoalowerlevelthanthatofacoolspace.Thereforethereisnobenetto
setthehumiditycontroltoexcessivelylowlevelsincoolrooms;doingsowillresultinlong
periodsofineffectivedehumidierruntime.Settingsbelow45%arenotrecommended.
4.3 Fan/Filter Switch
TurningONthefan/lterswitchwillcausetheQuestDRY150fantoruncontinuously,
whethertheQuestDRY150isdehumidifyingornot.Thisfunctionisdesirableiftheunit
isusedforaircirculationandltrationtoachievemaximumindoorairquality.Whenthe
switchisON;airwillbeconstantlylteredthroughtheQuestDRY150andcirculated
throughoutthestructure.WhentheswitchisOFFthefanwilloperateonlywhenthe
humiditycontrolcallsfordehumidicationorwhentheventilationtimercallsfor
ventilation.
4.4 Ventilation Timer
Theventilationtimercontrolsthefanandthemotorizedfreshairdamper.Whentheventilationtimeris
activated,theQuestDRY150willcirculatetheindoorair,andbringinfreshairfromoutside.Theventilation
timershouldbesetfortherequiredventilationofthestructure.Thestructureshouldbeventilatedwithfresh
airassuggestedbyapplicablecodesandstandardsorasrequiredbytheowner.Theventilationtimerisan
electronictimerthatdisplaysthecurrenttime.Thistimerhasbatterybackup,soitwillnotrequireresettingafter
apoweroutage.Followingaprolongedpoweroutagethedisplayofthetimerwillashonandoffindicatinga
poweroutagehasoccurred.Theone-minutetimeincrementsoftheventilationtimerallowyoutoprogramthe
ventilationofyourstructuretotyourschedule.
Theventilationtimerallowssixprogramswitheachprogramhavingone“ON”andone“OFF”event.A
programallowstheusertoturntheventilationonatacertaindayandtime,thenitallowsthemtoturnthe
ventilationoffatacertaindayandtime.Eachoftheseprogramscanberepeateddailyorweeklyorduringa
speciedblockofdays.Allsixoftheprogramsoperateindependentlyofeachother.Ifthetimerfailstooperate
oroperateserratically,checkthatthecontrolpanelreceives24VacfromtheQuestDRY150.If24Vacispresent
atthecontrolpanel,resetthetimerbypressingtheresetbuttonatthebottomcenterofthetimerface.The
Figure 5:
Fan/Filter Switch
Figure 4:
Humidity Control
Adjustment Knob
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resetbuttonisthesmallrecessedbuttonwithanRbeneathitlocatedbelowthe1-7andh
buttons.Depresstheresetbuttonuntilthedisplayclears.Releasetheresetbutton.Thedisplay
willreappearas00:00.Resettingthetimerwillclearthetimeandallprogramsettings.
Afterresettingthetimerfollowtheinstructionsbelowtosetthecorrecttimeandventilation
programs.
4.4A Setting the Time
Setthecorrecttimeonthetimerbyslidingtheswitchintheupperrighthandcornerofthe
timertotheclocksymbol.andpressingthe1-7(DAY),h(HOUR),andm(MINUTE)buttons.
Rememberthistimeroperatesona
24-hour(militarytime)clock.
4.4B Ventilation Schedule
SlidetheswitchintheupperrighthandcornertotheprogramsymbolP.“ON”willappear
totherightofthetimeandthenumber“1”willappearinthelowerrighthandcornerof
thedisplay.The“1”and“ON”signifytheturnontimefortherstprogram.Pressthe1-7,h
andmbuttontochoosethedaysoftheweekforthisprogram.YoucanchooseMon.-Sun.,
Mon.-Fri.,Sat.-Sun.,oranysingledayoftheweek.Thedayschosenareshownalongthetop
ofthedisplayontheventilationtimer.Nextpressthehbuttontosetthehourforthestartofthe
ventilationperiod.Rememberthistimeroperatesona24-hourclock(militarytime).Thenpress
thembuttontosettheminutespastthehourtostarttheventilation.
Now,withtheventilationstarttimeset;presstheI/Obutton.Theword“OFF”shouldappear
totherightofthetimeandthenumber“1”shouldremaininthelowerrighthandcornerofthedisplay.The“1”
and“OFF”signifytheturnofftimefortherstprogram.Settheturnofftimeusingthe1-7,handmbuttonsinthe
samewayasdescribedaboveandcontinueontothesecondthroughsixthprograms.Whensettingtheventilation
programs,youcanreturntothecurrenttimedisplaybyslidingtheswitchintheupperrightcornerofthetimerto
RUN.TheslideswitchmustbesettoRUNforthetimertooperateitsscheduledprograms.
4.4C Automatic or Manual Mode
Theslideswitchintheupperleftofthetimerisusedtochoosebetweenautomaticandmanualoperation.Whentheslide
switchissettoAUTOmode,theQuestDRY150willventilatewhenthescheduledprogramscallforventilation.When
theslideswitchissettomanual(settohandsymbolontheright),theoperationofthetimeriscontrolledbytheI/Obutton
only.PressingtheI/ObuttonwillswitchtheventilationtimerbetweenON(detent)andOFF(detent).AsyoupresstheI/O
button,“ON”or“OFF”willbedisplayedtotherightofthetime.The“ON”or“OFF”indicatesiftheventilationtimeris
onoroff.TheI/ObuttonwillmanuallyoverridescheduledprogramsifthetimerisinAUTOmode.
Figure 6: Humidity/Fan
Control Panel Part No.
4024155
Figure 7: Ventilation Timer
and Humidity Control
Panel Part No. 4024125
FOR HVAC INSTALLER ONLY

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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 or
damage to the transformers will result. Do not direct connect the white lead on the unit to the violet lead on the
ventilation control or damage to the transformer will result.
ControlPartNo.4026570
UA Base Unit
Yellow
Red
Blue Green
White
DAMPER
24 VAC
DMP COMP FAN
optional
Humidity/Fan Control Panel
Ventilation Timer/Humidity
Control Panel
DEH 3000 Digital Control
FOR HVAC INSTALLER ONLY

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FOR HVAC INSTALLER ONLY
5. DEH 3000 Digital Control Installation Instructions
5.1 Specications
PartNumber: 4026570
Model: DEH3000DigitalControl
Electrical: 24VAC
HumidityRange: 10–95%RH
HumidityAccuracy: +/-5%
Output: 3Amps24VAC
RelayCapacity: 5Amps
TempRange/Accuracy: 2%
Size: 4.95"widex4.19"high
5.2 Installation
Thiscontrolpanelmustbeinstalledintheconditionedspaceandin
accordancewithallapplicablecodesandstandards.Followtheinstructions
belowwheninstallingandsettingthiscontrol.
5.2A Install Instructions
1. Separatethefrontpanelfromthebackpanelbydepressingthemiddle
sectionsofthetopandbottomofthefrontpanel.
2. Linethebackpanelupagainstthewalloratsurfaceontowhichitisto
bemountedanddrillintheappropriatemountingholes.
3. Insertthescrewsandtightendownsotheyextendapproximately1/8”fromthebackplate.
4. Alignthebackpanelsothatthecontrolislevel.
5. Tightenthescrewstolockintoposition.
6. Maketheelectricalconnectionstotheterminalsonthe
backpanelasshowninthewiringdiagram.
7. Reassemblethefronttothebackpanel.Connectatthe
toprst,thenatthebottom.
8. Testconnections(seeSection2.6)
5.2B Wiring
WARNING: DO NOT ALLOW THE YELLOW LEAD FROM
THE Quest DRY 150 TO CONTACT THE RED OR WHITE
LEADS FROM THE Quest DRY 150 OR DAMAGE TO THE
TRANSFORMER WILL RESULT. UNPLUG Quest DRY 150
BASE UNIT BEFORE WIRING CONTROL.
TheinstallermustsupplythewiringbetweentheQuestDRY150andthecontrolpanel.Besuretosafely
routethecontrolwirestopreventdamageduringinstallation.Becarefulnottocrossthewireswhen
connectingtheQuestDRY150andtheremotecontrolpanelordamagetothetransformermayresult.
TheremotecontroloftheQuestDRY150ispoweredbyalowvoltagecircuit(24VAC)andmustNEVER
contactorbeconnectedtoahighvoltagecircuit.SomeofthecontrolwiresleavingtheQuestDRY150may
notbeusedwithcertaincontrolpanelsandshouldbeleftsafelydisconnectedwithwirenutstapedontothe
strippedends.BesuretoconsulttheelectricalschematicinthismanualoronthefrontpaneloftheQuest
DRY150beforemakingthecontrolconnections.
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WARNING: TO AVOID TRANSFORMER DAMAGE
ONLY CONNECT THE WHITE WIRE TO THE
CONTROL IF A DAMPER IS USED.
Thewhitewirecontrolstheoptionalmotorized
damperthatcanbeinstalledintoafreshairduct.
Thisprovidestheabilitytocontrolwhenfreshairis
introducedintothebuildingbyusingtheventilation
timerfunctionlabeled“DMP”onthecontrol(See
Section3.7).IF THE MOTORIZED DAMPER IS
NOT USED, DO NOT CONNECT THE WHITE
WIRE TO THE CONTROL OR DAMAGE TO THE
TRANSFORMER MAY RESULT.Simplyleavethe
(DMP)terminalunusedifthedamperisnotused,
andcapoffthewhiteleadfromtheQuestDRY150
dehumidier.
5.2C Auxiliary relay operation
Attimesitmaybedesirabletocoordinatefanoperationofthecentralheating/coolingsystemwith
dehumidieroperation.TheDEH3000featuresarelaythatprovidesthisability.Therelayterminalslabeled
NC,COMandNOoperateaccordingtothefollowingchart:
Dehumidication
Operation COM/NO COM/NC
ON CLOSED OPEN
OFF OPEN CLOSED
Commonuses(assumingstandardthermostatwiring
colorschemesasnoted):
Disengage A/C during dehumidication
RedirecttheyellowthermostatwiretotheNC
terminal.WiretheyellowwirefromtheA/Ctothe
COMterminal.
Engage the A/C central fan during dehumidication
1.Disconnectthegreenwirethatrunstothefan
relayfromthescrewonthethermostat.
2.ConnectthegreenwirethatrunstothefanrelaytotheCOMscrewontheDEH3000board.
3.RunawirefromtheredwirescrewonthethermostattotheNO(NormallyOpen)screwontheDEH3000
board.
4.RunawirefromthegreenwirescrewonthethermostattotheNC(NormallyClosed)screwonthe
DEH3000board.
ThecentralfanshouldrunwhentheThermostatfanswitchisturnedtoONandwhenthedehumidieris
operating.
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5.2D Dehumidier lockout/activation:
AC sensor feature
Thecontrolhastheabilitytoactivatethedehumidieror
deactivatethedehumidierwhentheairconditionerisrunning.
Standard wire colors for thermostats are as follows:
Description Color Terminal code
24VACReturn Red R
CallforHeat White WorW1
ForceFanOn Green G
Compressor
CallforCooling Yellow YorY1
DEHUMIDIFIER DEACTIVATES WHEN THE
AIR-CONDITIONER IS RUNNING
• Thecommonwireonthethermostattransformer
(black)needstobewiredwiththeyellowwire
fromthedehumidier.
• TheYellowwirefromthethermostatmustbe
wiredtotheACoffsensorterminal.
DEHUMIDIFIER ACTIVATES WHEN THE
AIR-CONDITIONER IS RUNNING
• Thecommonwireonthethermostattransformer
(black)needstobewiredwiththeyellowwire
fromthedehumidier.
• TheYellowwirefromthethermostatmustbe
wiredtotheAConsensorterminal.
5.2E Location
Installtheremotecontrolpanelinacentralareaof
thestructurewhereitwillsensetherelativehumidity
ofthestructureaccurately.Donotinstallthecontrol
panelwhereitmaynotaccuratelysensetherelative
humiditysuchasnearHVACsupplyregisters,nearexteriordoorsandwindows,ornearapoolorspa.
5.2F Testing
Afterwiringconnectionshavebeenmade,verifyconnections.First,makesurethewhitewirefromthe
baseunitisnotwireddirectlytotheDEH3000control.Theremustbeamotorizeddamperinseries
withtheseconnections,orthewhitewiremustnotbeconnectedtothecontrol.Mis-wiringmayresultin
transformerdamage.
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After connections have been veried, this short test will conrm proper wiring.
1.Installfrontcoverofcontrol;insertattoprst,thenbottom.
2.PluginQuestDRY150baseunit.Thecontrolshouldpowerup.
3.TurncontrolonbypressingtheON/OFFbutton.
4.EngagedehumidicationoperationbyadjustingRHsetpointbelowambientconditions.
 a.PressRHuntilRHsetpointis20%.
 b.VerifyQuestDRY150fanandcompressoroperation.
 c.Verifyventilationdamper(ifused)isclosed.
5.Verifyfanonlyoperationbydisengagingdehumidicationandoperatingfan:
 a.AdjustRHsetpointaboveambientconditionsbypressingandholdingRHuntilsetpointis80%.
 b.Pressfanbutton,thenpressagaintotogglefanto“ON”setting.
 c.Releasefanbutton,thenpressagaintotogglefanto“ON”settinguntil“FAN”ashesondisplay.
 d.VerifyfanoperationofQuestDRY150.Nocompressoroperationshouldbenoted,andventilation
damper(ifused)shouldbeclosed.
6.Verifyventilationdamperoperation(ifinstalled)bydisengagingfromoperationandengaging
ventilatingoperation.
 a.Pressandholdfanbuttonuntil“FAN”ashesondisplay.
 b.Release“FAN”button,thenpressagaintotogglefanoperationoff.
 c.Pressandhold“VENT”buttonuntil“VENT”ashesondisplay.
 d.Release“VENT”button,thenpressagainuntil“OPEN”isdisplayed.
 e.VerifyQuestDRY150fanoperationandventilationdamperisopen,withnocompressoroperation.
7.Ifanyfunctionsarenotworkingproperly,verifywiringandconnections.Metersmaybeusedacross
terminalstoverifyvoltage.Ifthereisaconcernaboutthebaseunitnotoperatingproperly,theleads
exitingthebaseunitmaybeconnectedandoperationveriedaccordingtothefollowingmatrix:
Wire connections Operation
 Yellow&Blue Fan&Compressor
 Yellow&Green FanOnly
Donottestanyotherconnectionsortransformerdamagemayresult.Refertotheappropriate
QuestDRY150baseunitmanualforadditionalinformation.
8.Verifyadditionaloptionalcontroloperationssuchasfaninterlockorlockout.
9.Proceedtooperation/settingsection.
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5.3 Operation
5.3A Display
• Whenthereispowertothecontrol,thecontroldisplaywillshowthe
time,day,humidity,andtemperature.
• Whenthecontrolisturnedon,thesetpoint,fanstatus,auto/holdmode,
andfreshairventstatusisdisplayed.
• Whenakeyispressedthedisplaywilllight.
• The“TIME”and“DAY”isdisplayedatthetopofthescreen.
• RHandTemperaturearedisplayedinrealtime.
• An“O”beforethesetpoint,vent,orfanindicatestheunitisoperating
thedevice.
• Aashing“O”beforethesetpoint,vent,orfanindicatestheunitisina
delaypriortooperatingthedevice.
Note: Delay is an intentional factory installed time delay cycle that is
meant to prevent short cycles, extending the life of the Quest DRY 150. If
a delay is encountered, WAIT 10 MINUTES BEFORE EXPECTING NORMAL
OPERATION.
5.3B Setting
Duringtheset-upprocess,ifyoumakeamistake,simplycontinue.You
canalwaysgobacktoadjustthesettings.Ifyouleavethecontrolalone
anddon’ttouchanybuttonsfor10seconds,thecontrolwillrememberany
changesmadeandreturnto“home.”
5.3C On/Off Setting
Pressthe“ON/OFF”buttontoturnthesystemonoroff.Whenthesystem
ison,thesetpoint,fanstatus,auto/holdmode,andfreshairventstatusis
displayed.Intheoffmode,thecontrolwillshowthetime,day,humidity,and
temperature.Whentheunitisshipped,itisinmanualmode.
5.3D Setting Clock Time
1. Pressandholdthe“CLOCK”button.Thehourdisplaywillash.Releasethebutton.
2. Usethe“UP/DOWN RH”buttonstochangethevalue.
3. Pressthe“CLOCK”buttonagainandtheminutedisplaywillash.UsetheRHbuttonstochangethevalue.
4. Pressthe“CLOCK”buttonagainandthe“AM/PM”displaywillash.UsetheRHbuttonstotogglethe
value.
5. Pressthe“CLOCK”buttonagainandthedaydisplaywillash.Usethe“RH”buttonstochangethevalue.
Ifthe“CLOCK”buttonispressedagainornobuttonispressedfor5seconds,thedisplaywillautomatically
returnto“HOME”.
5.3E Setting Relative Humidity Setpoint
Therelativehumiditysetpoint(theaverageRHthatismaintained)operatesthedehumidierfunctionofthe
QuestDRY150.Ithasnoeffectonanyotherfunctionoftheunit.Thecontrolsensestheambientrelative
humidityofthespaceinwhichitislocated.
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5.3F Operation
Theinitialdeadbandsetting(therangethatthedehumidiercycles
onandoff)is3%.Withasetpointof50%,thedehumidierturns
onwhenthereadingreaches53%.Thedehumidiercontinues
toremovewaterfromtheairuntilthereadingis47%.The
dehumidierremainsoffuntilthereadingis53%.
Ifthesetpointisequaltoorgreaterthanthecurrentambient
condition,thespacedoesnotneedtobedriedsothedehumidier
functionwillbeoff.
Example:Setpoint:50%RH
Currentcondition:45%RH=Dehumidieroff,the“O”indicator
willnotbeshown.
Ifthesetpointislessthantheambientcondition,thedehumidierwillbeonandthered“DEHU”indicator
willbelit.Sincethespaceismorehumidthanthesetpoint,thecontrolleroperatesthedehumidiertodry
thespace.
Example:Setpoint:50%RH
Currentcondition:55%RH=Dehumidieron,the“O”indicatorwillbeshown.
Tosettherelativehumiditysetpoint,pressupordown“RH”buttonstoadjusttherelativehumiditysetpoint
asdesired.Therma-Storrecommendsrelativehumiditylevelsnotexceed50%inthesummer,and25-35%in
thewinterifyouliveinacoldclimate.Itisnotrecommendedthatthehumiditysetpointbesetbelow35%.
Inordertodrythestructureinthewinterinacoldclimate,usetheventilationfunctionofthesystemrather
thanthedehumidierfunction.Callthefactoryorrefertotheowner’smanualformoreinformation.
5.3G Fan Setting and Operation
Usethe“FAN”buttontoadjustthefanoperation.Thereare
2choicesforfanoperation:“ON”or“AUTO.”
“ON”–indicatesthefanoftheQuestDRY150willrun
continuously.Thisdoesnotaffecteitherthedehumidicationor
ventilationfunctionsofthesystem.Inotherwords,thesystem
mayormaynotbeventilatingordehumidifyingwhilethefanis
running.Commonreasonsforoperatingthefancontinuouslyare
ltrationandairrecirculation.
“AUTO”–indicatesthefanwillrunwhenthecontrolcallsfor
dehumidicationorventilation.Ifthecontrolhasnotcalledfor
dehumidicationfor3hours,thecontrolwillautomaticallyrunthefanfor10minutes.Thefanmustruna
specicamountoftimeperday.Thishelpstokeepthedehumidierdry.
Afterdehumidicationcycle,fanautomaticallyshutsofffor10minutes.
Tosettheoperation:
1. Pressandholdthe“FAN”button.Thecurrentfansettingwillbegintoash.Releasethebutton.
2. Pressthe“FAN”buttontotogglebetweenthe“ON”and“AUTO”modes.
An“O”indicatorindicatesthefanisoperating.Aashing“O”indicatorindicatesthefanisinawaitmode
andwilloperateshortly.No“O”indicatesthefanisoff.
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Withthefaninthe“AUTO”mode,thefanwilloperateonlywhenneededbyotherfunctionsofthesystem.
Thefanwillremainoffunlessthesystemisdehumidifyingand/orventilating.Thefanalwaysrunsduring
dehumidicationandventilationandthefan“O”iconwillbelit.Tocompletelyturnthesystemoff,usethe
“ON/OFF”buttonasdescribedearlier.ToadjusttheventilationmodeseeSection3.7.
5.3H Damper Operation and Setting (Ventilation) Manual/Hold Mode
QuestDRY150unitscanbeinstalledtoincorporateoptionalventilation.Thedampersettingcontrols
theventilationfunctionofthesystem.Ithasnocontroloverthedehumidicationfunction,althoughthe
ventilationfunctioncanandshouldbeusedtodrythespacedependingontheclimateandtheoutsideair
conditions.RefertotheappropriateQuestDRY150manualformoreinformation.
Inordertoprovideventilation,thedampermustbeopen(“ON”)andthefanmustberunning.Thecontroller
takescareofthesetwofunctionsautomatically,sothatwheneverthedamperisopen(“ON”),thefanis
running.
Theventilationindicator“O”willbedisplayedwhenevertheunitisventilating.Thefanoperationindicator
“O”willalsobelit.
Therearethreedamperoperationmodes,“OPEN – HOLD,”“CLOSED – HOLD”and“PROGRAM”
(denotedby“ON TIME” – “OFF TIME.”Refertosection3.8).Withthedamperinthe“OPEN – HOLD”
mode,thedamperwillbeopenandthefanofthesystemwillbeoperatinginordertointroducefreshair
intothespace.Usethismodeforcontinuousfreshairventilation.Thefanisalwaysonwhenthedamperis
open.Whenin“CLOSED – HOLD”mode,thedamperwillnotopenandthesystemwillnotventilate.
Wheninthe“PROGRAM”mode,thecontrolwilloperatethedamperandfan(ventilate)accordingtothe
programmedventilationschedule(SeeSection3.8).
To set the damper operation:
1. Pressthe“VENT”button.Thecurrentsettingwill
begintoashonthedisplay.Releasethebutton.
2. Pressthe“VENT”buttonagaintotogglebetween
“open,”“closed”and“program.”
3. Leavethecontrolalonefor10secondstoselect
theindicateddampermodeandreturnto“HOME”.
5.3I Intermittent or Programmed Ventilation
Thesystemwilloperatetheventilationfunctionaccordingtothecurrentventilationprogram.Thecontrol
needstobeprogrammedtoturntheventilationfunctiononandoffatthedesiredintervals.Thisisdoneby
programmingtheventilationtimer.
TherearetwoprogramsavailableforventilationMonday
throughFriday.TherearealsotwoprogramsforSaturday
andSunday.Nootherchoiceofdaysisavailable.
Eachprogramhas:
• A“START”timeofdaywhentheventilationschedule
begins.
• An“OPEN FOR”durationfortheamountoftimethe
damperstaysopenin5minuteintervals,from0to60.
• A“CLOSED FOR”durationwhichclosestheventfor
aspeciedtimein5minuteintervalsfrom0to60.
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Example:
1. Press“PROGRAM ENTER”button.Thefollowingmenuappears:
2. Usingtheup/downRHbuttons,select“PROGRAM”.Thefollowing
menuappears:
You can select from:
“MON-FRI”or“SAT-SUN”forseparateweekday/weekendschedules
or“MON-SUN”whichgivesyouequalweekday/weekendschedules.
Menuwhenyouselect“MON-FRI”or“SAT-SUN”:
1. Enterthestartingtimeforweekdaysusingtheup/downRHkeysto
changethetime.
2.Presstheprogramenterkeytotoggletothe“OPEN FOR”setting.
Usingtheup/down“RH”keys,changethedurationthatthe
damperwillventilatefreshair.
3.Presstheprogramenterkeytotoggletothe“closedfor”setting.
Usingtheup/down“RH”keys,changethedurationthatthedamper
willremainclosedbetweenventilation.
Fortheexamplegiven,startingat8:00AMinthemorning,thecontrol
willventilatefreshairfor15minutesthenstopfor15minutes.This
scheduleof15minutesopen;15minutesclosedwillcontinueuntilthe
starttimeofthenightschedule.
Press“PROGRAM ENTER”againtogotothe“MON-FRI”night
schedule.Repeatthestepslistedaboveforthisandthe
“SAT-SUN”dayandnightschedules.
Whenyoureturntothemainprogrammenu,usetheup/down“RH”
buttonstoselect“RUN PROGRAM”.
Press“PROGRAM ENTER”toruntheprogram.Thedisplaywillappear
asfollows:
5.3J Temperature Cutout Programming
QuestDRY150unitsproduceheatwhendehumidifying.Depending
onoutsideconditions,theventilationfunctionmayintroducewarmair
intothespace.Occasionally,theoperationoftheQuestDRY150may
produceenoughheattodrivetemperaturesup.Thetemperaturecutout
featuredisablesallQuestDRY150operationsiftemperaturesreach
cutoutsetpoint.Inmostinstallationsthisfeaturewillnotneedtobe
used.Iftemperaturecutoutisdesired,programthesetpointbypressing
the“PROGRAM ENTER”button.PressRHuntil“TEMP CUTOUT”is
ashing.Use“RH”upor“RH”downtoadjustsetpoints.
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