Quest Engineering DEH 3000R

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1-800-533-7533
Quest DEH 3000R Installation, Operation and Maintenance Instructions
8
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Deactivate dehumidication when the air-conditioner is running.
Avoltmeterisrequiredforthenextstepstoensurethe
correctwiringfromtheA/Ctransformerisusedtosetup
theLock-outdehumidierfunction.
1. ThecommonwirefromtheexistingA/C
transformer(usuallyBlack)mustbeattachedto
the“COM”sensorterminalbetween“ON-D”
and“OFF-D”ontheDEH3000R.
TIP: The common wire can be identied as the wire
from the A/C transformer that reads 0 volts between
it and the Yellow air conditioning call for cooling wire.
The incorrect wire will give a 20 to 28 volt reading.
2.AnotherYellowwiremustbeaddedtothethermostatYellowterminalandruntothe“OFF-D”
sensorterminalontheDEH3000R.
2.8 Testing
Verifythewiringconnections.
WARNING! ONLY CONNECT THE WHITE WIRE TO THE CONTROL IF IT IS WIRED IN
A CIRCUIT THROUGH AN ELECTRIC DAMPER, OTHERWISE TRANSFORMER DAMAGE MAY RESULT.
Aftercheckingthewiring,thisshorttestwillconrmproperhook-up.
1. InstallfrontcoveroftheQuestDEH3000R;connectthetoprst,thenthebottom.
2.PlugintheQUESTdehumidier.TheQuestDEH3000Rshouldpowerup.
3.TurntheQuestDEH3000RONbypressingthe“ON/OFF”button.
4.VerifydehumidicationoperationbyadjustingtheRH“SETPOINT”tobelowthe“%RH”
readingonthedisplay.Usethedown“RH”button.ConrmQuestfanandcompressor
operation.BothshouldbeONnow.
IncreasetheRH“SETPOINT”onthedisplaytowellabovethe“%RH”readingonthedisplay.Pressthe“RH”
uparrowtoincreasetheRH“SETPOINT”.
AfterrunningthedehumidiercompressortheQuestDEH3000Rappliesa10minuterestartlockoutonall
functions.Youwillhavetowaitfortherestartlockouttoexpire.
5.VerifyFAN-onlyoperation:
a.Checkthe“VENT”modeonthedisplay,itwilleitherbe“CLOSED”or“OPEN”.Ifitis“CLOSED”goto
thenextstep.Ifitis“OPEN”,pressandholdthe“VENT”keyuntil“OPEN”ashesonthedisplay,release
thekeyandthenpressitonemoretime.“OPEN”willchangeto“CLOSED”.Don’ttouchthekeysfor
severalsecondsuntilitstopsashing.
b.Pressandholdthe“FAN”buttonuntil“AUTO”beginsashingonthedisplay,releaseit,andthenpressit
againtoswitchthefantothe“ON”setting.
c.ConrmthattheQUESTfanisON.QuestcompressormustbeOFF.Ventilationdamper(ifused)should
beCLOSED.
6.VerifyoptionalVENToperation(ifelectricdamperisinstalled):
a.Pressandholdthe“FAN”buttonuntil“ON”ashesonthedisplay.
b.Releasethe“FAN”button,thenpressitagaintoswitchfanoperationto“AUTO”.
TO A/C
TO A/C