Quick Start Guide

ApplicationSheet5–TwoZonewithExternalControlinPrimaryZone

PartsNeeded(additional
partsmayberequired):
__Model1830/1850/1870
__Model76,Model8620or
Model8910control
__Insulatedduct
__Thermostatwire
__Ductfittings&hardware
__20AOutlet(1870only)
__Drainpanandfloatswitch(if
required)
__Grilles
__5442DamperKit(includes:
2–10”diaN.O.dampers,
2–
10”diaN.C.dampersand
one40VA,24VACplug‐in
transformer)
Figure1Duct/DamperLayoutwith
WholeHouseasPrimar
y
Zone
Figure2Duct/DamperLayoutwith
BasementasPrimar
y
Zone
Figure3Wiring
SequenceofOperation
Theexternalcontrol(i.e.Model76ControlorModel8910
HomeComfortControl)provideson‐demandcontrolofthe
dehumidifierforthePrimaryZone.WhenthePrimaryZone
callsfordehumidification,thedehumidifierenergizesthe
dampers,andturnsonitsblowerandcompressor.The
dehumidifierwillalsoturnontheHVAC
SystemBlowerifwired
asshowninFigure3).ThePrimaryZonedemandwilloverride
anexistingSecondaryZonedemand.
TheSecondaryZoneiscontrolledbytherelativehumidity(RH)
settingatthedehumidifiercontrol.Onceanhour,or
immediatelyafterdehumidifyingtheprimaryzone,the
dehumidifierwill“sample”the
airintheSecondaryZone.
Whensampling,thedampersarenotenergizedwhilethe
dehumidifierblowerrunsandtheRHismeasuredIftheRHis
abovethesettingonthecontrol,thecompressorwillturnon
andtheSecondaryZonewillbedehumidified.
ODT
SENSOR
REMOTE
+-AB
DAMPERS
VENT DEH
SetUptheDehumidifierforZoningandExternalControl
1. PresstheModebuttonfor3secondstoentertheInstallerSetUpmenu
2. PresstheModebuttonuntil“ZONEDISABLED”appears.
3. PresstheUporDownbuttontochangeto“ZONEENABLED”.
4. PresstheModebuttonagaintoshow“EXTERNALDISABLED”
5. PresstheUpor
Downbuttontochangeto“EXTERNALENABLED”
6. PresstheModebuttonrepeatedly until“DONE”showsonthedisplay.
HVAC EQUIPMENT
NORMALLY
CLOSED
DAMPER
NORMALLY
CLOSED
DAMPER
NORMALLY
OPEN DAMPER
NORMALLY
OPEN DAMPER
TO/FROM SECONDARY ZONE
TO BE DEHUMIDIFIED
TO/FROM PRIMARY ZONE TO BE
DEHUMIDIFIED