Honeywell PRESTIGE THX9321 User manual

About your new thermostat
Your new thermostat is pre=programmed and ready to go. Just check the settings
below and change if needed:
1. Set date and time .................................................................................. See page 4
2. Select fan setting .................................................................................. See page 5
3. Select system setting ........................................................................... See page 6
4. Program schedules: Preset for maximum cost savings ............. See pages 7-10
5. Set humidification & dehumidification controls ................... Seepages 17-19
ONE-TOUCHTEMP CONTROL:Youcan overridetheprogramscheduleatanytime,andmanually
adjustthetemperature(seepages9-10).
He p:
FOr assistance please visit httP:ilyouthome,honeywelLcom, or call to!!-free:
1=800-.468_1502 (if product !S used in ahome)
1=888:245=1051 (if product is used in a workp!aoe)
Read and save these instructions,
®U.S. Registered Trademark.
Copyright ® 2011 Honeywell International Inc.
All rights reserved,

Prestige _THX9821/THX9421 Thermostat
Table of contents
Programming & Operation
Quick reference .................................. 2
Date/time settings .............................. 4
Fan settings ........................................ 5
System settings .................................. 6
Energy Saver settings ........................ 7
Using program schedules .................. 8
Schedule overrides ............................. 9
Menu options
System status ................................... 11
Vacation/event scheduler ................. 12
Humidity controls ............................. 17
Ventilation controls ........................... 20
Preferences menu ............................. 21
Temporary schedule changes .......... 22
Screen cleaning ................................ 23
Security settings ............................... 24
Installer contact information ............ 25
Advanced features ........................... 26
Appendices
Installer options ................................ 27
Battery replacement ......................... 28
Humidity display ............................... 30
Optional accessories ........................ 31
In case of difficulty ........................... 34
Limited warranty ............................... 35
CAUTION:EQUIPMENTDAMAGEHAZARD.Topreventpossiblecompressordamage,donot
operatecoolingsystemwhenoutdoortemperatureis below50°F(10°C).
Thisthermostatcontainsa LithiumbatterywhichmaycontainPerchloratematerial.
Specialhandlingmayberequired.Seewww.dtsc.ca.gov/hazardouswaste/perchlorate.
1 69-2493EFS--Ol

OperatingManua/
Quick reference: residential use
Display Controlfanoperation Selectsystem
homescreen (seepage 5) type (seepage6)
Changedateor
time(seepage4)
Displaymenu
options(see
pages11-26)
Outdoortemperature
andhumidity
Currentsystem
status
Adjust
temperature
settings(see
pages9-10)
Currentprogramstatus Indoortemperatureandhumidity
i_ Outdoortemperatureandhumidityare displayed
onlyif anoptionaloutdoorairsensorisinstalled.
69-2498EF8--01 2

Prestige_THX9821/THX9421Thermostat
Quick reference: commercial use
Display Controlfanoperation Selectsystem
homescreen (seepage5) type (seepage6)
Changedateor
time(seepage4)
Displaymenu
options(see
pages11-26)
Outdoortemperature Adjust
andhumidity temperature
settings(see
pages9-10)
Currentsystem
status
Presstooverrideprogramtemporarily
Outdoortemperatureandhumidityare displayed
onlyif anoptionaloutdoorairsensorisinstalled.
Thermostatlocationand
currentprogramstatus
Indoor
temperature
andhumidity
369-2493EFS--01

OperatingManua/
Date/time settings
Pressdate/timedisplay
Pressto selectdateor time
Pressarrow buttonsto change
MCR32960
To set the date or time, press the
date/time display, then select SETTiME
or SETDATE.
Press the A or y buttons until the
proper time/date is displayed, then
press DONE to save and exit (or press
CANCEL to exit without changing the
time).
i_ ThethermostatwillswitchtoandfromDaylight
SavingTimeautomatically.
69-2498EFS--01 4

Prestige_THX9821/THX9421 Thermostat
Fan settings
PressFAN
MCR32961
MCR32962
®
®
On: Fan is always on.
Automatic: Fan runs only when
heating or cooling system is on.
• Circulate: Fan runs randomly,
about 35% of the time (residential
models only).
•Follow Schedule: Fan controlled
by program (see pages 7=8).
Incommercialuse,pressAUTOMATICorON
to temporarilyoverridetheprogrammedfan
schedule.
Incommercialuse,theCIRCULATEoptionis
notavailable.
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OperatingManua/
System settings
PressSYSTEM
Pressany displayedoption
MCR32963
PressHELPformoreinformationabout
theseoptions.
MCR32964
Press SYSTEM,then select any option
(press A or y to scroll menu):
•Heat: Thermostat controls only the
heating system.
•Coo|: Thermostat controls only the
cooling system.
•Automatic: Thermostat selects
heating or cooling as needed.
• Off: Heating and cooling system is
off. Fan will still operate if fan is set
to On or Circulate.
Emergency Heat (only for
heat pumps with auxiliary heat):
Thermostat controls Auxiliary Heat.
Compressor is not used.
69-2498EFS--01 6

Prestige_THX9321/THX9421 Thermostat
Energy Saver settings for maximum cost savings
These default Energy Saver settings can reduce expenses by as much as 33%.
(See next page to customize each time period.)
@
C
@
.m
@
at
Period
Wake
Leave
Retu rn
Sleep
8tart time
6:00 am
8:00 am
6:00 pm
10:00 pm
Heat
(Mon-Fri)
70 °
62 °
70 °
62 °
Cool
(Mon-Fri)
78 °
85 °
78 °
82 °
Neat
(Sat-Sun)
70 °
82 °
70 °
62 °
Cool
(Sat-Sun)
78 °
85 °
78 °
82 °
@
o
@
E
E
o
O
Period Start time Heat Cool Fan
Occupied I 8:00 am 70 ° 75 ° On
Unoccupied I 10:00 pm 55 ° 85 ° Auto
I I
Occupied 2* 12:00 am 70 ° 75! On
Unoccupied2* ' 12:00am 85 ° Auto
*Period2 iscancelledby default.Ifyouactivateit,thevaluesshownabovearedefaultsettings.
769-2498EFS--01

OperatingManual
To adjust program schedules
PressMENU
Press CREATE/EDITSCHEDULE
Pressany displayedoption
MCR32965
MCR32966
MCR32967
Press MENU,then CREATE/EDIT
SCHEDULEto display options:
• Guide me: This option creates a
schedule for you, by asking simple
questions.
•|'ll do it myself: This is a faster
way to create a schedule manually.
•View/Edit: This displays the full
schedule, so you can make quick
adjustments.
Toreducecosts,you shouldusethepre-set
EnergySaversettings(seepage7).
PressHELP at anymenuscreenfor more
informationaboutscheduleoptions.
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Prestige_THX9821/THX9421 Thermostat
Program schedule override: residential use
Pressto changetemperature
MCR32968
Press A or y to change the tempera-
ture. it will be maintained until the
"hold" time you set.
Press the PERMANENT HOLD button to
keep the same temperature until you
manually change it or resume the
program schedule.
To cancel these settings at any time,
press CANCEL HOLD.
Pressto set Pressto
"hold"time cancel
"hold"
Pressto
begin"hold"
9 69-2493EFS--01

OperatingManua/
Program schedule override: commercial use
Pressto activate"occupied"mode
MCR32969
Press to change temperature
MCR32970
Pressto set Pressto Pressto
"hold"time cancel begin"hold"
"hold"
Press A or y to change the
temperature, it will be maintained until
the "hold" time you set.
Press OVERRIDE to use a pre-set
"occupied" temperature if a person is
present during an unoccupied period.
The new temperature will be main-
tained for at least 1 hour, and can be
adjusted up to the maximum time set
by the installer. To change the time,
press the HOLD UNTIL arrow buttons.
The programmed schedule will resume
when the override timer expires. To
cancel the override at any time, press
CANCEL HOLD.
69-2498EFS--01 10

Scrolltoselect EQUIPMENT STATUS
MCR32965
MCR32971
Prestige _THX9821/THX9421 Thermostat
Press MENU, then select EQUIPMENT
STATUS.
Depending on how your thermostat
was installed, the Equipment Status
screen can report data about the fol=
lowing systems:
. Heating and cooling
. Fan
, Humidification
" Dehumidification
" Ventilation
,, Maintenance reminders
, Thermostat information
11 69-2493EFS--01

Operating Manua/
Menu: Vacation scheduling (residential use}
PressMENU
Scrolltoselect VACATION
Followscreenprompts,thenpressDONE
MCR32965
MCR32972
This feature lets you conserve energy
while away, and restores a comfortable
temperature just before you return to
your home.
Press A. or y at each screen to enter
temperatures, dates and times as
prompted, then press DONE.
The temperature you set will be
maintained until you return, then the
program schedule will resume.
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Prestige_THX9821/THX9421 Thermostat
Menu: Holiday/event scheduling (commercial use)
PressMENU
Scrollto selectHOLIDAY/ EVENTSCHEDULER
Choosean optionbelow
MCR32965
MCR32973
This feature lets you conserve energy
when the workplace is unoccupied for
special events or on holidays.
The US (United States) and CANADIAN
options allow you to select from a list
of holidays commonly observed in
each country. You can set the system
to "unoccupied" or "occupied" mode
for the days you select.
The CUSTOM EVENTS button gives
you more options to customize
temperatures for specific dates and
times in the future.
13 69-2493EFS--01

Operating Manual
Menu: Holiday override (commercial use)
ScrolltoselectHOLIDAYMODE
MCR32974
Followscreenprompts,thenpressDONE
Press HOLIDAY MODE to set
temperatures that will be maintained
from now until the date you expect to
return.
The thermostat will resume the normal
schedule on the date you set. You can
press CANCELat any time to resume
the normal schedule.
Thecooltemperaturesettingcanonly beset
higherthantheunoccupiedprogramsettingand
theheattemperaturesettingcanonlybeset
lowerthantheunoccupiedprogramsetting.
69-2498EFS--01 14

Prestige_THX9821/THX9421 Thermostat
initiate Occupancy mode (commercial use)
Pressto maintaincomfortable
temperaturewhile roomis occupied
MCR32975
This feature keeps temperature at an
energy-saving level until the PRESS TO
START OCCUPANCY button is pressed.
When you arrive, press the button to
maintain a comfortable temperature
while the room is occupied.
Press the A or y buttons to set the
temperature or "Hold Until" time. The
temperature is maintained until the
time you set. Temperature returns to
an energy-saving level after the timer
expires, or the "Occupied" period ends.
The thermostat keeps temperature at
an energy saving level until OVERRIDE
or PRESS TO START OCCUPANCY button is
pressed.
This featureisavailableonlyif it is programmed
bytheinstaller.
15 69-2498EFS--01

Operating Manua/
Remote setback (commercial use)
Programmable
During "occupied" periods: if a remote setback switch or sensor is installed,
temperature will be maintained at the level set for the Standby mode when the
switch or sensor is off. When it is on, temperature will be maintained at the level
set for the occupied period.
During "unoccupied" periods: The remote setback switch or sensor is ignored
during unoccupied periods. Temperature will be maintained at the level set for the
unoccupied period.
Non=programmable
if a remote setback switch or sensor is installed, temperature will be maintained
at the revel set for the Standby mode when the switch or sensor is off. When it is
on, temperature will be maintained at the level you set manually.
Time delay
Depending on how your thermostat was installed, there may be a time delay of
up to 30 minutes before the system switches from occupied to standby mode.
69-2498EFS--01 16

Prestige _THX9821/THX9421 Thermostat
Menu: Humidification
PressMENU
ScrolltoselectHUMIDIFICATION MCR32965
Set humiditytodesiredlevel
MCR32976
Move the slider bar to the humidity
level you prefer, then press DONE.
Press MORE SETTINGS if frost or con-
densation appears on windows. A
lower number adjusts humidity to help
prevent these problems. Use a higher
number if indoor air is too dry.
TheWindowProtectionoptionisonlyavailable
if anoptionaloutdoorsensorisinstalled.
Thethermostatcontrolshumidificationand
dehumidificationsystemsas neededto
maintainthedesiredhumiditylevel,A 15%
separationbetweensettingsis maintainedto
preventexcessiveenergyuse.
Windowprotection:Thermostatadjustshumidityas
neededto preventfrostorcondensation 17 69-2493EFS--01

Operating Manua/
Menu: Dehumidification (residential use)
PressMENU
ScrolltoselectDEHUMIDIFICATION MCR32965
MCR32977
Set humiditytodesiredlevel
MCR32978
Pressto reviewfiltertimer
This feature can control a dehumidifier
or use your air conditioner to reduce
humidity. Move the slider bar to the
humidity level you prefer, then press
DONE.
Press MORE SETTINGS to review or
change settings for the dehumidifier
filter timer.
Ifyourairconditionerisusedto controlhumidity,
temperaturemaydropas muchas 30F below
thelevelyouset untilhumidityreachesthe
desiredlevel.
Thethermostatcontrolshumidificationand
dehumidificationsystemsas neededto maintain
thedesiredhumiditylevel.A 15%separation
betweensettingsis maintainedto prevent
excessiveenergyuse.
69-2498EFS--01 18