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15 69-2072—05
Wiring
Wiring TrueIAQ
®
with a non-
powered humidifier, ventila-
tion damper, and an auxiliary
exhaust fan.
2
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.
FOR WIRING OF HUMIDIFIER OTHER THAN THE HE265 READ THE INSTALLATION INSTRUCTIONS.
IF A RELAY OTHER THAN THE R8239 IS USED, A DEDICATED TRANSFORMER WITH AT LEAST 40 VA IS
REQURED TO POWER THE HE265 AND EARD. IF AN R8239 IS USED (AS SHOWN IN THIS DIAGRAM) NO
ADDITIONAL TRANSFORMER IS REQURED.
1
M27392
68
40
55
1215
:
76
%
%
In
Out
PM
R
C
SENSOR
SENSOR
SWITCH
W
G
VENT
VENT
DEHUM
DEHUM
HUM
HUM
TrueIAQ
EARD-6
TH8110U
YWRRc
OUTDOOR
SENSOR
(PROVIDED)
HVAC
R
C
W
Y
G
CG
1
2
HE265
R
W
C
Y
G
YELLOW
BLACK
BLACK
WHITE
120 VOLT POWER
L1
L2
R8239 FAN CENTER RELAY
EXHAUST FAN
3
3
69-2072_C.indd 15 7/31/2008 2:04:27 PM