Ventilation
The dehumidifier can activate a normally closed damper
to bring in outdoor air through a fresh air intake duct. This
feature can not be used when a Y6456 has been installed
in a Remote Control application, and is not recommended
for two-zone installations.
Required Components
X4152 Ventilation Damper – 6 in. Normally Closed (NC)
6" Insulated Duct for Fresh Air Intake Duct
22N03 (24 VAC, 40 VA) 24 VAC Transformer for
Ventilation Damper
Intake Hood
18-22 AWG Wire
Optional Component
58N66 Outdoor Temperature Sensor
INSTALLATION & WIRING
VENT-AUTO & VENT-TIMED
The dehumidifier can ventilate in four modes.
Vent-Timed: Ventilation occurs based only on time
setting; no temperature restrictions.
Vent-Auto-B: Ventilation prevented when outdoor
temperature is below 0°F and above
100°F. Between 0°F – 20°F ventilation is
only allowed during a HVAC heat call.
Vent-Auto-C: Ventilation prevented when outdoor
temperature is below 0°F and above
100°F.
Vent-Auto-D: Ventilation prevented when outdoor
temperature is below 0°F and above 90°F.
Between 0°F – 40°F ventilation is only
allowed during a HVAC heat call.
Vent-Auto-B, -C, -D modes apply outdoor temperature
limits and require the 58N66 Outdoor Temperature
Sensor to be installed.
BALANCING
DAMPERS
NORMALLY CLOSED
VENT DAMPER
AIR IS PULLED
FROM OUTSIDE
HVAC/FURNACE
6 ft
MIN
NORMALLY CLOSED
VENT DAMPER
AIR IS PULLED
FROM OUTSIDE
HVAC/FURNACE
6 ft
MIN
+ - A B
ODT VENT DEH
Sensor
Dampers
Remote
FLOA
T
Switch
DH
DH
Gh
Rf
Cf
Gs
Y
W
HV
AC EQUIP
.
HVAC
EQUIPMENT
THERMOSTAT
24 VAC
(10 VA min)
TRANSFORMER
6" NORMALLY
CLOSED DAMPER
OPTIONAL OUTDOOR
TEMPERATURE SENSOR
(Model 58N66)
Y
W
C
R
G
Y
W
G
C
R
90-1897
90-1898
90-1861
Figure 24. Single Zone, On-Board Control
Ventilation Installation
Figure 26. Ventilation Wiring
Figure 25. Single Zone, External Control
Ventilation Installation
16
