Quick Start Guide

ApplicationSheet4–TwoZoneusingInternalControl

PartsNeeded(additional
partsmayberequired):
__Model1830/1850/1870
__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
Adjusttherelativehumidity(RH)settingonthe
dehumidifiercontrol;thiswillbethesettingforboththe
PrimaryandSecondaryZone.Onceanhour,the
dehumidifierwill“sample”theairinthePrimaryZone.
IfthereisnoneedfordehumidificationinthePrimary
Zonethedehumidifierwillthensample
theairinthe
SecondaryZone.
WhensamplinginthePrimaryZonethedehumidifier
willenergizethedampersandthenturnonitsblower
(andtheHVACSystemblowerifwiredasshownin
Figure3),tomeasuretheRHoftheair.IftheRHofthe
airis
abovethesetting,thecompressorwillturnon.If
thePrimaryZonedoesnotneeddehumidification,the
dampersarede‐energizedandtheHVACSystemBlower
(ifon)isturnedoffwhilethedehumidifierblower
continuestoruntosampletheairintheSecondary
Zone.IftheRHof
theairintheSecondaryZoneisabove
thesetting,thecompressorwillturnon.
SetUptheDehumidifierforZoning
1. With“OFF”showingonthecontrol,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repeatedly until“DONE”shows
onthedisplay.
G
HVAC
EQUIPMENT
THERMOSTAT
R
C
G
W
Y
EXISTING WIRE
NEW WIRE
ODT
SENSOR
DH DH
REMOTE
+-AB
HVAC EQUIP
Gh Rf Cf Gs W Y
DAMPERS
VENT DEH
FLOAT
SWITCH
DEHUMIDIFIER
CONTROL BOARD
NC
NO
R
C
W
Y
N.C. DAMPERS
120
VAC
24
VAC
20 VA (MIN.)
TRANSFORMER
N.O. DAMPERS
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