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Wiring (continued)
Follow this diagram if using DR90 with a
powered dehumidistat such as TrueIAQ
Follow this diagram if using DR90 with
DR90 Dehumidification System 69-2407EFS—02
(DG115EZIQ).
a VisionPRO IAQ.
1
R
C
TrueIAQ
OUTDOOR
SENSOR
SENSOR
(PROVIDED)
68
40
In
SWITCH
%
76
55
Out
%
W
2
:
12 15
PM
G
VENT
VENT
DEHUM
DEHUM
HUM
HUM
IF A THERMOSTAT OTHER THAN A TH5110, TH5220, TH5320, TH6110, TH6220, TH6320, TH8110,
1
TH8320, OR TH8321 IS USED, A RELAY MAY BE REQUIRED TO ISOLATE THE G WIRE.
2
PROGRAM ISU SETTING 60 TO Ø TO FORCE SYSTEM FAN ON WITH DEHUMIDIFICATION CALL.
EQUIPMENT INTERFACE MODULE (EIM)
D-1
R-2
C-3
VISIONPRO IAQ
+
DHUM
R
FAN
C
DR90
THERMOSTAT
R Rc
C
W
Y
G
HVAC
SENSOR
EARD-6
DR90
FURNACE BOARD
1
CONV. HP
2
W1
O/B
3
W2
AUX
C
W3
AUX2
R
Y
Y
RC
Y2
Y2
RH
G
G
H1
U
M2
D1
OR
H
M2
V1
N
T2
EARD-6
R
C
W
Y
G
M29842
FAN
C
HEAT 1 RELAY
HEAT 2 RELAY
HEAT 3 RELAY
COOL 1 RELAY
COOL 2 RELAY
G
FAN RELAY
M29843
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