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Follow this
diagram for
ducted operation
with external
humidity and
ventilation control.
TrueDRY
HVAC
MECHANICAL
DEHUMIDISTAT
THERMOSTAT
G
Y
W
R Rc
C
R
W Y
G
M29841A
DRY
CONTACTS
DPDT
RELAY,
2.6A
EARD-6
AT120
R
C
DAMPER
AUX
REMOTE
W8150A
G
R
C
C
W
G
DHUM
+
+
R FAN C
FLOAT
TrueDry DR90-AP Dehumidification System 50077470-001
27
Wiring (continued)
Follow this diagram if using TrueDRY
DR90-AP with a powered dehumidistat
such as TrueIAQ (DG115EZIQ).
HVAC
THERMOSTAT
G
Y
W
R Rc
M29842A
IF A THERMOSTAT OTHER THAN A TH5110, TH5220, TH5320, TH6110, TH6220, TH6320,
TH8110, TH8320, OR TH8321 IS USED, A RELA Y MAY BE REQUIRED TO ISOLATE THE G WIRE.
PROGRAM ISU SETTING 60 TO Ø TO FORCE SYSTEM FAN ON WITH DEHUMIDIFICATION CALL.
C
68
40
55
1215
:
76
%
%
In
Out
PM
R
C
W
Y
G
R
C
SENSOR
SENSOR
SWITCH
W
G
VENT
VENT
DEHUM
DEHUM
HUM
HUM
OUTDOOR
SENSOR
(PROVIDED)
EARD-6
TrueIAQ
1
1
2
2
TrueDRY
DHUM
+
+
R FAN C
FLOAT