Installation Guide
69-2089EFS—08
8
Follow this diagram if using TrueDRY DH65 with VisionPRO IAQ.
Follow this diagram if using TrueDRY DH65 with a powered dehumidistat such as TrueIAQ (DG115EZIAQ).
Wiring
HVAC
THERMOSTAT
G
Y
W
R Rc
M27332A
IF A THERMOSTAT OTHER THAN A TH5110, TH5220, TH5320, TH6110, TH6220, TH6320, TH8110,
TH8320, OR TH8321 IS USED, A RELAY MAY BE REQUIRED TO ISOLATE THE G WIRE.
PROGRAM ISU SETTING 60 TO Ø TO FORCE SYSTEM FAN ON WITH DEHUMIDIFICATION CALL.
DHUM
R
FA
N
C
+
+
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
TrueDRY
2
2
M27333A
FAN
FURNACE BOARD
EQUIPMENT INTERFACE MODULE (EIM)
G
C
CONV. HP
1
2
3
C
R
RC
RH
W1
W2
W3
Y
Y2
G
O/B
AUX
AUX2
Y
Y2
G
H1
U
M2
D1
H
M2
V1
N
T2
HEAT 1 RELAY
HEAT 2 RELAY
HEAT 3 RELAY
COOL 1 RELAY
COOL 2 RELAY
FAN RELAY
VISIONPRO IAQ
D-1
R-2
C-3
DHUM
R
FAN
C
+
+
TrueDRY
OR
Apply power to TrueDRY DH65. Turn the humidity control to a low RH% level to initiate a humidity call. Confirm that
the TrueDRY DH65 compressor and fan turn on. The furnace blower will also turn on to circulate air. This will take
up to two minutes. Be sure to turn this back down (or off) when checkout is complete. Turning the humidity control
to Off will turn TrueDRY DH65 off.
Checkout
69-2089EFS_D.indd 8
9/22/2008 10:02:39 AM