Quest Engineering DEH 3000R Installation, Operation And Maintenance Instructions - Quest Deh 3000R
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Quest DEH 3000R
Installation, Operation and Maintenance Instructions
11
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3.6 Adjusting the relative humidity “SETPOINT”
TheQuestDEH3000Rsensestheambientrelativehumidity(%RH)ofthespaceinwhichitislocated,itcomes
factorypresettohold50%relativehumidity.
Therelativehumidity“SETPOINT”(desiredRHtobemaintained)operates
thedehumidifierfunctionoftheQuestdehumidifier.Ithasnoeffectonthe
optionalVENT(freshairventilation)orFAN(airrecirculation)functionsifthey
arebeingused.
Operation
Thestandardrangethatthedehumidifierholdsaroundyour“SETPOINT”
is3%.Withasetpointof50%,thedehumidifierwillrununtiltherelative
humidityreaches47%.Thedehumidifierwillthenswitchoffuntiltherelative
humidityreaches53%.
Ifthesetpointishigherthantheambientrelativehumidity,thespacedoesnotneedtobedehumidifiedsothe
dehumidifierwillnotrun.
Example:Setpoint:50%RH
Currentcondition:45%RH–Thedehumidifierwillbeoff(no“O”indicatorwillbedisplayed).
Ifyoursetpointisbelowtheambientcondition,thedehumidifierwillbeonand“O”willdisplay.
Example:Setpoint:50%RH
Currentcondition:55%RH–Thedehumidifierwillbeon(“O”displayed).
3.7 Fan Setting and Operation
Usethe“FAN”buttontochangethefanoperation.Thereare2choicesforfanoperation:“ON”or“AUTO”.The
factorypresetis“AUTO”.
“ON”–ThefanintheQuestdehumidifierwillruncontinuously.Thisdoesnotaffecteitherthedehumidification
orventilationfunctionsofthesystem.Thesystemmayormaynotbeventilatingordehumidifyingwhilethefanis
running.Thissettingiscommonlyusedformaximumairfiltrationand/orairrecirculation.
“AUTO”–IndicatesthefanwillrunwhentheQuestDEH3000Rcallsfordehumidificationorventilation.Ifthe
controlhasnotcalledfordehumidificationfor3hours,thecontrolwillautomaticallyrunthedehumidifierfanfor
10minutes.
Afteradehumidificationcycle,thefanautomaticallyshutsofffor10minutes.Thispauseallowsthewatertodrain
fromthedehumidifier.
Asolid“O”indicatesthefanisoperating.Aflashing“O”indicatesthefanisinawaitmode.No“O”indicatesthe
fanisOFF.
Tosettheoperation:
1.Pressandholdthe“FAN”button.Thecurrentfansettingwillbegintoflash
onthedisplay.Releasethebutton.
2.Pressthe“FAN”buttontotogglebetweenthe“ON”and“AUTO”modes.
Withthefaninthe“AUTO”mode,thefanwilloperateonlywhenneeded
byotherfunctionsofthesystem.ThefanwillremainOFFunlessthesystem
isdehumidifyingorventilating.Thefanalwaysrunsduringdehumidification
andventilationandthefan“O”iconwillbelit.Tocompletelyturnthe
systemOFF,usethe“ON/OFF”buttonasdescribedearlier.