Installation Guide
Wiring
Follow this diagram if using TrueDRY DH65 with a powered dehumidistat such as TrueIAQ (DG115EZIAQ).
Follow this diagram if using TrueDRY DH65 with VisionPRO IAQ.
Checkout
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.
69-2089EFS—01
1
R
C
TrueIAQ
OUTDOOR
SENSOR
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
COM
FAN
EXT
TrueDRY
THERMOSTAT
R Rc
C
W
Y
G
HVAC
EARD-6
TrueDRY
FURNACE BOARD
1
C
CONV. HP
2
W1
O/B
3
W2
AUX
C
W3
AUX2
R
Y
Y
RC
Y2
Y2
G
RH
G
G
H1
U
M2
D1
OR
H
M2
V1
N
T2
8
R
C
W
Y
G
M27332
FAN
HEAT 1 RELAY
HEAT 2 RELAY
HEAT 3 RELAY
COOL 1 RELAY
COOL 2 RELAY
FAN RELAY
M27333