Honeywell VisionPRO TH8000 Series User manual

Operating
Manual
VisionPRO®TH8000 Series
Touchscreen Programmable Thermostat

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For assistance with this product please visit http://yourhome.honeywell.com
or call Honeywell Customer Care toll-free at 1-800-468-1502
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 manual covers the following models
TH8110U: For 1 Heat/1 Cool systems
TH8320U: For up to 3 Heat/2 Cool systems
TH8321U: For up to 3 Heat/2 Cool systems with dehumidification
(Pull thermostat from wallplate and turn over to find model number)
® U.S. Registered Trademark.
US Patent No. 6595430, D509151 and other patents pending.
Copyright © 2006 Honeywell International Inc.
All rights reserved.

VisionPRO®TH8000 Series
1
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 installation ..........................20
Advanced functions ........................21
In case of difficulty ..........................26
Optional remote sensors ................28
Limited warranty ..............................29
Table of contents
This thermostat is ready to go!
Your new thermostat is pre-
programmed and ready to go.
See page 3 to check settings.
CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible
compressor damage, do not operate
cooling system when outdoor
temperature is below 50°F (10°C).

Operating Manual
2
About your new thermostat
Congratulations! You’ve just purchased the world’s most advanced, easy-
to-use thermostat. It has been designed to give you many years of reliable
service and touchscreen climate control.
Features
• 7-day program schedules maximize comfort and economy.
• Armchair programming: Just pull thermostat from the wall to set schedules.
• EnergyStar®compliant to greatly reduce your heating/cooling expenses.
• 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.
• Select models display and control summer humidity.
• Select models accommodate optional outdoor or indoor remote sensors.

VisionPRO®TH8000 Series
3
This thermostat is ready to go!
Your new thermostat is pre-programmed and ready to go. All you have to
do is set the time and day. Then check the settings below and change if
needed:
1Set clock......................................................................................See page 6
2Select fan setting: Preset to Auto ........................To change, see page 7
3Select system setting: Preset to Heat ..................To change, see page 8
4Program 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) ..................................To change, 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).

MON TUE WED THU FRI SAT SUN
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE
AUTO
FAN
OK TO PICK MULTIPLE DAYS
Inside
70 Set To
Following
Schedule
70
AM
6:01
Operating Manual
4
Quick reference to controls
Press day(s) to set program schedule (see page 11)
Press to select fan
operation (see page 7)
Press to adjust
temperature settings
(see pages 11-14)
Press to set program
schedule (see page 11)
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).
Press to select system
type (see page 8)
Press for more options
(select models only)

WED
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE
AUTO
FAN
Inside
70 Set To
Following
Schedule
Recovery
70
AM
6:01
VisionPRO®TH8000 Series
5
Quick reference to status display
Current inside temperature Current day of week Temperature setting
System setting
Fan setting
Adaptive Intelligent
Recovery in effect (see
page 15)
Program schedule on
(does not display
when off)
Current time Other display messages:
•Cool On: Cooling system is activated
•Heat On: Heating system is activated
•Aux Heat On: Auxiliary heating system is activated

Operating Manual
6
Clock setting
To set the current time display,
press clock, then press or
to adjust the time. Press and
hold or to advance the time
more quickly.
Press DDOONNEEto save & exit (or press
CCAANNCCEELLto 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 22.
Press CCLLOOCCKK
Adjust time, then press DDOONNEE
SCHED HOLD CLOCK SCREEN MORE
AM
6:01
DONE CANCEL
AM
6:02

VisionPRO®TH8000 Series
7
Fan setting
Press FFAANNto select fan operation:
•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. Use this setting for
improved air circulation, or for more
efficient air cleaning, if you do not
want the fan to run all the time.
You can press FFAANNat any time 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
FFAANNagain to select Auto.
WED
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE
AUTO
FAN
Inside
70 Set To
Following
Schedule
70
AM
6:01
Press FFAANN

Operating Manual
8
System setting
Press the SSYYSSTTEEMMbutton to select:
•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. **
WED
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE
AUTO
FAN
Inside
70 Set To
Following
Schedule
70
AM
6:01
** Select models only

VisionPRO®TH8000 Series
9
WAKE
6:00 am
70 °
LEAVE
8:00 am
62 °
RETURN
6:00 pm
70 °
SLEEP
10:00 pm
62 °
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).
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.

Operating Manual
10
EnergyStar®settings for maximum cost savings
This thermostat is pre-set to use EnergyStar®program settings. We recom-
mend 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.)
70
°
78
°
70
°
78
°
62
°
85
°
62
°
85
°
70
°
78
°
70
°
78
°
62
°
82
°
62
°
82
°
Heat (Mon-Fri) Cool (Mon-Fri) Heat (Sat-Sun) Cool (Sat-Sun)
Wake
(6:00 am)
Leave
(8:00 am)
Return
(6:00 pm)
Sleep
(10:00 pm)
[Or cancel period]
[Or cancel period]
[Or cancel period]
[Or cancel period]

VisionPRO®TH8000 Series
11
To adjust program schedules
1 Press SSCCHHEEDD, then EEDDIITT.
2 Press day buttons (MMOONN--SSUUNN) to select
day(s).
3 Press or to set Wake time for
selected day(s).
4 Press or to set Heat and Cool
temperature for this time period.
5 Press other time periods (LLEEAAVVEE, RREETTUURRNN,
SSLLEEEEPP) to set time and temperatures
for each.
6 Press DDOONNEEto save & exit (or press
CCAANNCCEELLto exit without saving changes).
Note: You can press CCAANNCCEELLPPEERRIIOODDto eliminate any
unwanted time period.
Note: Press FFAANNto customize fan settings for any
time period (see page 7).
Press SSCCHHEEDD
SCHED HOLD CLOCK SCREEN MORE
Press EEDDIITT
Select day(s)
Set time for program
period start
Set heat/cool levels
EDITDONE WAKE LEAVE RETURN SLEEP CANCEL
MON TUE WED THU FRI SAT SUN
HEAT
COOL
AUTO
FAN
OK TO PICK MULTIPLE DAYS
70
78
AM
6:00
DONE WAKE LEAVE RETURN SLEEP CANCEL
CANCEL
PERIOD

WED
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE CANCEL
AUTO
FAN
Inside
70 Set To
Hold Temperature
Until
73
AM
8:00
Operating Manual
12
Program schedule override (temporary)
Press or to immediately adjust the
temperature. This will temporarily over-
ride the temperature setting for the cur-
rent time period.
The new temperature will be maintained
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 CCAANNCCEELL(or SSCCHHEEDD). The program
schedule will resume.
Press CCAANNCCEELL(or SSCCHHEEDD) to
resume program schedule
Press to set timer
Adjust temperature
Heat On

VisionPRO®TH8000 Series
13
Program schedule override (permanent)
Press HHOOLLDDto 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 CCAANNCCEELL(or
SSCCHHEEDD) to cancel “Hold” and resume the
program schedule.
WED
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE CANCEL
AUTO
FAN
Inside
70 Set To
Permanent
Hold
73
AM
8:00
Press CCAANNCCEELL(or SSCCHHEEDD) to
resume program schedule
Press HHOOLLDDAdjust temperature
Heat On

Operating Manual
14
Vacation hold
This feature can suspend the program
schedule for extended periods of time.
Press or to set the temperature you
want, then press or to set the time
of day you want the schedule to resume
when you return. Press HHOOLLDDtwice, then
press or to select the number of
days.
Whatever temperature you set will be
maintained 24 hours a day for the num-
ber of days you select. After this number
of days have elapsed, the previously pro-
grammed schedule will resume at the
time you set.
If you return earlier than expected, press
CCAANNCCEELL(or SSCCHHEEDD) to cancel “Hold” and
resume the program schedule.
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE CANCEL
AUTO
FAN
Inside
70 Set To
Hold Temperature
Until
55
6:00pm
1Set temperature
2Press to set time for
schedule to resume
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE CANCEL
Hold Temperature
Until
14
3Press HHOOLLDDtwice
4Press to select number of days
DAYS

VisionPRO®TH8000 Series
15
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 before6 am, so the temperature 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.

Operating Manual
16
Screen lock
To prevent tampering, the screen can be
partially or fully locked.
When partially locked, the screen
displays SSCCRREEEENNLLOOCCKKEEDDfor several seconds
if a locked key is pressed. To unlock the
screen, press any unlocked key while
SSCCRREEEENNLLOOCCKKEEDDappears on the screen.
When the screen is fully locked, no keys
function. To lock or unlock the screen, see
advanced function 0670 on page 25).
WED
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE
AUTO
FAN
Inside
70 Set To
SCREEN LOCKED
Following
Schedule
70
PM
6:00
See advanced function
0670 (page 25) for
screen lock options

VisionPRO®TH8000 Series
17
Screen cleaning
Press SSCCRREEEENNto lock the screen for clean-
ing. The screen will remain locked for 30
seconds so you can clean the screen
without changing any settings.
After 30 seconds, press DDOONNEEto resume
normal operation, or press SSCCRREEEENNagain 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.
30 OKAY TO
CLEAN
SCREEN
SCHED HOLD CLOCK SCREEN MORE
PM
6:00
Press SSCCRREEEENN
Screen lock timer (30 seconds)

Operating Manual
18
Humidity level display (select models)
Select models can display the current
indoor humidity level.
(If an optional outdoor sensor is installed,
the outdoor temperature is shown
instead of the humidity level. Press MMOORREE
to display the humidity level.)
WED
HEAT
SYSTEM
SCHED HOLD CLOCK SCREEN MORE
AUTO
FAN
Inside
70 Set To
Following
Schedule
70
PM
6:00
Indoor humidity level
Humidity
43 %