Honeywell VISIONPRO TH8321U1097 User manual

Operating Manual
VisionPRO® TH8000 Series - TH8321U1097
Touchscreen Programmable Thermostat
69-2400EFS-03

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Read and save these instructions.
Need Help?
For assistance with this product please visit http://yourhome.honeywell.com
or call Honeywell Customer Care toll-free at 1-800-468-1502
® U.S. Registered Trademark.
US Patent No. 6595430, D509151 and other patents pending.
Copyright © 2011 Honeywell International Inc. All rights reserved.
BE CAREFUL! Never use sharp instruments, such as a pencil
or pen, to press touchscreen keys. To prevent damage to the
thermostat, always press keys with your fingertip.
This thermostat contains a Lithium battery which may contain Perchlorate material.
Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate
This manual covers the following models
TH8321U1097: For up to 3 Heat/2 Cool systems with indoor air qual-
ity control
M29343

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About your new thermostat
Thermostat features ..........................................2
Programming at a glance..................................3
Quick reference to controls...............................4
Quick reference to status display......................5
Programming & Operation
Clock setting......................................................6
Fan setting.........................................................7
System setting...................................................8
Using program schedules..................................9
Program schedule overrides............................12
Vacation hold...................................................14
Special features...............................................15
Screen lock......................................................16
Screen cleaning...............................................17
Humidity display & control ..............................18
Appendices
Battery replacement........................................22
Advanced functions .........................................23
In case of difficulty..........................................30
Optional remote sensors .................................32
Limited warranty .............................................33
This thermostat is ready to go!
Your new thermostat is pre-
programmed and ready to go.
See page 3 to check settings.
Table of contents
CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible
compressor damage, do not oper-
ate cooling system when outdoor
temperature is below 50˚F (10˚C).
VisionPRO® TH8000 Series

Operating Manual
2
About your new thermostat
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Congratulations! You’ve just purchased the world’s most advanced, easy-to-use ther-
mostat. It has been designed to give you many years of reliable service and touch-
screen climate control.
Features
• 7-day program schedules maximize comfort and economy.
• Armchair programming: Just pull thermostat from the wall to set schedules.
• One-touch temp control overrides program schedule at any time.
• Precise comfort control keeps temperature within 1°F of the level you set.
• Change/check reminders let you know when to service or replace filters,
batteries and other critical components.
• Large touchscreen display with backlight is easy to read—even in the dark.
• Accommodates optional outdoor or indoor remote sensors.
• Controls humidification, dehumidification, or ventilation.

VisionPRO®TH8000 Series
3
About your new thermostat
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Your new thermostat is pre-programmed and ready to go. Just set the time and day.
Then check the settings below and change if needed:
1. Set clock........................................................................................................................ See page 6
2. Select fan setting: Preset to Auto............................................................................. See page 7
3. Select system setting: Preset to Heat.................................................................... See page 8
4. Program schedules: Preset to energy-saving levels
while you’re at work or asleep (assumes you
wake at 6 am, leave at 8 am, return at 6 pm
and go to bed at 10 pm).......................................................................................... See pages 10-13
ONE-TOUCH TEMP CONTROL: You can override the program schedule at any time,
and manually adjust the temperature (see pages 12-14).
This thermostat is ready to go!

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SCHED HOLD CLOCK SCREEN MORE
MON TUE WED THU FRI SAT SUN
AM
FAN
AUTO
SYSTEM
HEAT
Following
Schedule
Inside Set To
OK TO PICK MULTIPLE DAYS
70
6:01
70
M29344
Press day(s) to set program schedule (see page 11)
Press to select fan
operation (see page 7)
Press to select system
type (see page 8)
Press to set program
schedule (see page 11)
Press to adjust
temperature settings
(see pages 11-14)
Press for more options
(select models only)
Press to override
program schedule
(see pages 12-14)
Press to set clock
(see page 6)
Press to lock keypad for 30
seconds to clean screen
(see page 17)
Quick reference to controls

VisionPRO®TH8000 Series
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SCHEDHOLD CLOCKSCREEN MORE
WED
AM
FAN
AUTO
SYSTEM
HEAT
Following
Schedule
Inside Set To
Recovery
70
6:01
70
M29345
Current inside temperature Current day of week Temperature setting
Program schedule on
(does not display
when off)
Fan setting
Other display messages:
• Cool On: Cooling system is activated
• Heat On: Heating system is activated
• Aux Heat On: Auxiliary heating system is activated
Quick reference to status display
System setting
Current time
Adaptive Intelligent
Recovery in effect
(see page 15)

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DONE CANCEL
AM
6:02
M29347
SCHED HOLD CLOCK SCREEN MORE
AM
6:01
M29346
To set the current time display, press CLOCK, then
press s or t to adjust the time. Press and hold s or
t to advance the time more quickly.
Press DONE to save & exit (or press CANCEL to exit
without changing the time).
Note: The real-time clock should never require
adjustment since it automatically updates for
daylight savings time, and stores all date/time
information.
Note: To change the current week day display, see
page 24.
Press CLOCK
Adjust time, then press DONE
Clock setting

VisionPRO®TH8000 Series
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SCHEDHOLDCLOCK SCREEN MORE
WED
AM
SYSTEM
HEAT
Following
Schedule
Inside Set To
70
6:01
70
FAN
AUTO
M29348
Press FAN to select fan operation, then press DONE.
• On: Fan is always on.
• Auto: Fan runs only when the heating or
cooling system is on.
• Circ: Fan runs randomly, about 35% of the
time, not counting any run time with the
heating or cooling system.
You can press FAN to override the fan settings you’ve
programmed for different time periods (see page 11). If
you select On or Circ, the setting you select will remain
active until you press FAN again to select Auto (see
page 31 for more information).
Press FAN
Fan setting
Note: If a fan schedule is programmed,
“Auto” will run the fan schedule.

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Press the SYSTEM button to select, then press DONE.
• Heat: Thermostat controls only the
heating system.
• Cool: Thermostat controls only the
cooling system.
• Off: Heating and cooling systems are off.
• Auto: Thermostat automatically selects
heating or cooling depending on the
indoor temperature.**
• Em Heat (only for heat pumps with
auxiliary heat): Thermostat controls
Emergency and Auxiliary Heat.
Compressor is locked out.**
** Select models only
System setting
SCHED HOLD CLOCKSCREEN MORE
WED
AM
Following
Schedule
Inside Set To
70
6:01
70
FAN
AUTO
SYSTEM
HEAT
M29349

VisionPRO®TH8000 Series
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Save money by setting program schedules
It’s easy to program your system for maximum energy savings. You can program four
time periods each day, with different settings for weekdays and weekends.
Set to the time you awaken and the temperature you want
during the morning, until you leave for the day.
Set to the time you leave home and the temperature you
want while you are away (usually an energy-saving level).
Set to the time you return home and the temperature you
want during the evening, until bedtime.
Set to the time you go to bed and the temperature you want
overnight (usually an energy-saving level).
WAKE
6:00 am
70 °
LEAVE
8:00 am
62 °
RETURN
6:00 pm
70 °
SLEEP
10:00 pm
62 °

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This thermostat is pre-set to use energy saving program settings. We recommend these settings,
since they can reduce your heating/cooling expenses by as much as 33%. (See next page to adjust
times and temperatures of each time period.)
Wake
(6:00 am)
Leave
(8:00 am)
Return
(6:00 pm)
Sleep
(10:00 pm)
Cool (Mon-Fri)Heat (Mon-Fri) Heat (Sat-Sun) Cool (Sat-Sun)
70 °78 °70 °78 °
62 °85 °62 °
[Or cancel period]
85 °
[Or cancel period]
70 °78 °70 °
[Or cancel period]
78 °
[Or cancel period]
62 °82 °62 °82 °
Energy saving settings for maximum cost savings

VisionPRO®TH8000 Series
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SCHED HOLD CLOCKSCREEN MORE
M29350
DONE WAKE LEAVERETURN SLEEPEDIT CANCEL
M29351
DONE WAKE LEAVERETURN SLEEP CANCEL
MON TUE WED THU FRI SATSUN
AM
CANCEL
PERIOD
HEAT
COOL
OK TO PICK MULTIPLE DAYS
70
6:00 78
FAN
AUTO
M29352
To adjust program schedules
1. Press SCHED,then EDIT.
2. Press day buttons (MON-SUN) to select day(s).
3. Press s or t to set Wake time for selected
day(s).
4. Press s or t to set Heat and Cool
temperature for this time period.
5. Press other time periods (LEAVE, RETURN, SLEEP) to
set time and temperatures for each.
6. Press DONE to save & exit (or press CANCEL to exit
without saving changes).
Note: You can press CANCEL PERIOD to eliminate any unwanted
time period.
Note: Press FAN to customize fan settings for any time period
(see page 7).
Set time for program
period to start
Press EDIT
Select day(s) Set heat/cool levels
Press SCHED

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Heat On
SCHEDHOLDCLOCK SCREEN MORE
CANCEL
WED
Inside
Hold Temperature
Until
Set To
73
AM
8:00
70
FAN
AUTO
SYSTEM
HEAT
M29353
Program schedule override (temporary)
Press s or t to immediately adjust the tem-
perature. This will temporarily override the
temperature setting for the current time period.
The new temperature will be maintained only
until the time you set. When the timer expires,
the program schedule will resume and set the
temperature to the level you’ve programmed
for the current time period.
To cancel the temporary setting at any time, press
CANCEL (or SCHED). The program schedule will resume.
Adjust temperature
Press to set timer
Press CANCEL (or SCHED) to
resume program schedule

VisionPRO®TH8000 Series
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Heat On
SCHED HOLD CLOCKSCREEN MORE
CANCEL
WED
AM
Inside Set To
Permanent
Hold
73
8:00
70
FAN
AUTO
SYSTEM
HEAT
M29354
Program schedule override (permanent)
Press HOLD Adjust temperature Press HOLD to permanently adjust the temperature. This
will turn off the program schedule.
Whatever temperature you set will be maintained 24
hours a day until you manually change it or press
CANCEL (or SCHED) to cancel “Hold” and resume the
program schedule.
Press CANCEL (or SCHED) to
resume program schedule

Operating Manual
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SCHEDHOLDCLOCK SCREEN MORE
CANCEL
AM
Inside
Hold Temperature
Until
Set To
55
6:00
70
FAN
AUTO
SYSTEM
HEAT
M29355
SCHED HOLD CLOCKSCREEN MORE
CANCEL
DAYS
Hold Temperature
Until
14
SYSTEM
HEAT
M29356
Vacation hold
This feature can suspend the program sched-
ule for extended periods of time.
Press s or tto set the temperature you want, then
press s or tto set the time of day you want the
schedule to resume when you return. Press HOLD twice,
then press s or tto select the number of days.
Whatever temperature you set will be main-
tained 24 hours a day for the number of days
you select. After this number of days have
elapsed, the previously programmed schedule
will resume at the time you set.
If you return earlier than expected, press CANCEL (or
SCHED) to cancel “Hold” and resume the program
schedule.
1. Set temperature
2. Press to set time for
schedule to resume
3. Press HOLD twice
4. Press to select number of days

VisionPRO®TH8000 Series
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Special features
Auto Changeover: When set to Auto, the thermostat automatically selects heating or
cooling depending on the indoor temperature.
Adaptive Intelligent Recovery: This feature allows the thermostat to “learn” how
long the furnace and air conditioner take to reach programmed temperature settings,
so the temperature is reached at the time you set. For example: Set the Wake time to
6 am, and the temperature to 70°. The heat will come on before 6 am, so the tempera-
ture is 70° by the time you wake at 6. The message “Recovery” is displayed when the
system is activated before a scheduled time period.
Compressor Protection: This feature forces the compressor to wait a few minutes
before restarting, to prevent equipment damage. During the wait time, the message
“Wait” is displayed on screen.
Away Dehumidification Mode: Your system may be programmed to control humidity while your
house is vacant during the humid season. Before you leave the house, press the HOLD button three
times to activate this feature. This will control temperature and humidity to help protect your house
and possessions while you are away. (If this feature does not work, contact your installer.)

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M29357
SCHED HOLD CLOCK SCREEN MORE
WED
PM
Following
Schedule
Inside Set To
SCREEN LOCKED
70
6:00
70
FAN
AUTO
SYSTEM
HEAT
Screen lock
To prevent tampering, the screen can be par-
tially or fully locked.
When partially locked, the screen displays SCREEN
LOCKED for several seconds if a locked key is pressed.
To unlock the screen, press any unlocked key while
SCREEN LOCKED appears on the screen.
When the screen is fully locked, no keys
function. To lock or unlock the screen, see
advanced function 0670 on page 29.
See advanced function
0670 (page 29) for
screen lock options

VisionPRO®TH8000 Series
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SCHEDHOLDCLOCK SCREEN MORE
PM
6:00
M29358
OK TO
CLEAN
SCREEN
30
M29359
Screen cleaning
Press SCREEN to lock the screen for cleaning. The
screen will remain locked for 30 seconds so you can
clean the screen without changing any settings.
After 30 seconds, press DONE to resume normal opera-
tion, or press SCREEN again if you require more time for
cleaning.
Note: Do not spray any liquid directly on the
thermostat. Spray liquids onto a cloth, then use
the damp cloth to clean the screen. Use water or
household glass cleaner. Avoid abrasive cleansers.
Press SCREEN
Screen lock timer (30 seconds)

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Humidification control
Press MORE until the humidifier screen is displayed,
then press s or tto set the humidity and Frost
Control level.
When using Frost Protection, if frost/conden-
sation appears on windows, lower the frost
setting. Wait at least 1 day before adjusting the
frost level again. Once frost no longer appears,
the thermostat will control humidity to the
maximum level without frosting or fogging win-
dows and without further adjustment.
Press DONE to save and exit, or press CANCEL to exit
without saving changes.
Note: Humidification control not available on all
models.
Note: If you do not have an outdoor temperature
sensor, the Frost Control level will not be displayed.
Set Frost Control & humidity level
Press to save
& exit
Press to select
Auto or Off
DONE CANCEL
DEHUMIDIFIER
Inside
FROST
5
Auto
32
55
MCR29720