Indoor Air Quality (Iaq) Control; Humidification; Set Up Humidification - Honeywell TH8320R1003 Vision Pro 8000 Product Data

7. Select the Backup Heat Type. See Fig. 174.
Fig. 174.
INDOOR AIR QUALITY (IAQ)
CONTROL

Humidification

The thermostat reads the indoor humidity level and allows the
user to set a humidification setting with or without window
protection.
The thermostat can be set up to control a humidifier in any
system mode in the Installer Setup (ISU 806). A discharge air
sensor is required to humidify in the cool mode.
If humidification and dehumidification are setup to operate in
the same system mode (Heat, Cool, Off) and you are sensing
humidity from one location, the thermostat will automatically
enforce a 15% deadband between the humidification and
dehumidification settings. The thermostat will automatically
switch between humidification and dehumidification to maintain
the desired humidity level.
If humidification and dehumidification are setup to operate in
the same system mode (Heat, Cool, Off) and you are sensing
humidity from two different locations using a remote wireless
indoor sensor, the thermostat will allow humidification and
dehumidification to operate at the same time, and there is no
deadband between humidification and dehumidification
settings.
Window Protection
Window Protection limits the amount of humidity to prevent
frost or condensation on windows. Window Protection (ISU
805) requires an outdoor sensor.
The thermostat prevents frost or condensation on windows by
not allowing the humidifier to run above a certain level. To
prevent frost or condensation, the thermostat may turn off the
humidifier before the humidity setting is reached.
To adjust the Window Protection setting, press MENU, scroll
down and select Window Protection. Window Protection is set
on a scale from 1-10. A setting of "1" represents poorly
insulated windows and a setting of "10" represents well
insulated windows. A lower number automatically reduces the
humidity to help prevent frost or condensation on your
windows. Use a higher number if indoor air seems too dry. To
prevent frost/condensation on your windows during cold
outdoor temperatures, poorly insulated windows require a
lower Window Protection setting, which will limit how much
your humidifier can run.
After you set the Window Protection setting, check for frost/
condensation on your windows in the morning. If frost/
condensation is present, adjust the Window Protection setting
to the next lowest number and check for frost/condensation on
your windows the next morning. Continue to adjust the Window
Protection setting to a lower number until frost/condensation is
no longer present.
If Window Protection is turned Off, the thermostat controls the
humidity level to the user's desired humidity setting. Frost or
condensation may appear on windows.

Set up Humidification

1. Select the Humidifier Type at ISU 800. See Fig. 176.
NOTE: Based on the humidifier type you select, the
thermostat defaults to the most commonly used
settings for that humidifier type.
For example, a Bypass or Fan Powered humidi-
fier will default ISU 807 to "Hum when Heat is
On."
A Steam humidifier will default ISU 807 to "Tstat
Controls Fan."
79
®
VISIONPRO 8000 WITH REDLINK™
Fig. 175.
Fig. 176.
68-0312—01