Install Instructions

41
AUXILIARY DEHUMIDIFIER
The auxiliary dehumidifier setting is used when a
whole home dehumidifier is used for
dehumidification. This requires:
1. Whole home dehumidifier has been wired to
thermostat per dehumidifier installation
instructions.
2. Dehumidification has been enabled on
installer settings.
3. Unit is in COOL mode, (or if in AUTO, there
has been at least one thermostat cooling call
made prior to the dehumidification demand).
4. Dehumidification demand exists (RH above
set point).
HUMIDITROL
®
If Humiditrol is enabled in the installer settings,
then this adjustment affects overcooling
operation. Overcooling ranges from 2ºF below the
cooling setpoint (MIN setting) down to 2ºF above
the heating setpoint (MAX setting). Halfway
between the two settings is the MID setting.
If a Humiditrol
®
EDA is installed and enabled, then
the thermostat must be configured to properly
operate the Humiditrol
®
EDA as follows (see
Figure 22 for the Humiditrol
®
EDA operation
flowchart):
Check the HUMIDITY SETTINGS in user settings
to confirm that the user has turned ON
dehumidification setting.
NOTE - Humiditrol
®
EDA operation requires use
of an outdoor sensor. If sensor is not connected
and Humiditrol
®
EDA is enabled, “OUTDOOR
SENSOR REQUIRED” is displayed in the
information display.
Cooling only—Dehumidification will only occur if:
1. Dehumidification demand is present.
2. Cooling demand is not present.
3. Outdoor temperature is less than 95ºF,
4. Indoor temperature is not cooler than 65ºF or
cooler than the heating set point + 2ºF (IF the
difference between cooling and heating set
points is greater than the deadband).
In this case, 24VAC is removed from the D
terminal and Y1 and Y2 terminal (if available)
becomes activated with 24VAC. This cycles the