Honeywell TH8320R1003 Installation Manual page 81

2. If optional remote wireless indoor sensors are installed,
you can choose which sensor you want to use for humid-
ification control. You can use a different sensor for dehu-
midification. See "Wireless Indoor Sensor" beginning on
page 113 for more information.
Fig. 178.
3. Select the terminals wired to the humidifier. See Fig.
179.
NOTE: U1, U2, and U3 are Normally Open Dry Con-
tacts that require power from the system trans-
former or a separate transformer. See "Wiring
IAQ Equipment or a Heat/Cool Stage to the
Universal Terminals" beginning on page 129.
Fig. 179.
4. Set Window Protection setting. See Fig. 180.
NOTE: Outdoor sensor is required for Window Protec-
tion.
Fig. 180.
5. Select the system mode(s) to allow humidification. See
Fig. 181.
NOTE: Heat includes Heat, Emergency Heat and Auto.
If the system is in Auto mode, the thermostat
will allow humidification if the last call was for
heat.
Cool includes Cool and Auto. If the system is in
Auto mode, the thermostat will allow humidifica-
tion if the last call was for cool. A discharge sen-
sor is required to humidify in the Cool mode.
The thermostat prevents condensation in the
duct work by not allowing the humidifier to run
when the discharge temperature goes below
the dew point temperature. The humidifier is
allowed to run again after the discharge temper-
ature rises above the dew point temperature.
6. Select from one of the Humidification Control Options
(ISU 807). See Fig. 182.
• Hum when Heat is On
The thermostat turns on the humidifier only if the heat
is currently running and humidification is needed.
• Hum when Fan is On
The thermostat turns on the humidifier only if the fan
is currently running and humidification is needed.
• Tstat Controls Fan
The thermostat turns on the humidifier and the fan
when humidification is needed.
• Hum Controls Fan
The thermostat turns on the humidifier when
humidification is needed and the humidifier controls
the fan.
81
®
VISIONPRO 8000 WITH REDLINK™
Fig. 181.
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