Honeywell TH8321U Thermostat User Manual

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Installation  
Guide  
®
VisionPRO TH8000 Series  
Touch-screen Programmable Thermostat  
This manual covers the following models  
•
•
•
ꢀ TH8110U:ꢀForꢀ1ꢀHeat/1ꢀCoolꢀsystems  
ꢀ TH8320U:ꢀForꢀupꢀtoꢀ3ꢀHeat/2ꢀCoolꢀsystems  
ꢀ TH8321U:ꢀForꢀupꢀtoꢀ3ꢀHeat/2ꢀCoolꢀsystemsꢀwithꢀdehumidification  
(
Pull thermostat from wallplate and turn over to find model number)  
System Types  
•ꢀ Heatꢀonlyꢀ—ꢀtwo-wireꢀsystems,ꢀ  
power to open and close zone  
valvesꢀ(Seriesꢀ20),ꢀandꢀnormallyꢀ  
open zone valves  
•
ꢀ Gas,ꢀoil,ꢀorꢀelectricꢀheatꢀwithꢀairꢀ  
conditioning  
•
ꢀ Warmꢀair,ꢀhotꢀwater,ꢀ  
•
ꢀ Heatꢀonlyꢀwithꢀfan  
•ꢀ Coolꢀonly  
ꢀ 750ꢀmVꢀheatingꢀsystems  
highefficiencyꢀfurnaces,ꢀheatꢀ  
pumps,ꢀsteam,ꢀgravity  
•
This thermostat contains a Lithium battery which may contain Perchlorate material.  
PerchlorateꢀMaterial—specialꢀhandlingꢀmayꢀapply,ꢀ  
Seeꢀwww.dtsc.ca.gov/hazardouswaste/perchlorate  
Need Help?  
Forꢀassistanceꢀwithꢀthisꢀproductꢀpleaseꢀvisitꢀhttp://customer.honeywell.com  
or call Honeywell Customer Care toll-free at 1-800-468-1502  
®
U.S. Registered Trademark.  
Copyright © 2012 Honeywell International Inc.  
All rights reserved.  
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Installation Guide  
Wallplate installation  
1
2
. Separate wallplate from thermostat.  
. Mount wallplate as shown below.  
Graspꢀtopꢀandꢀbottomꢀofꢀwallplateꢀ  
and pull to remove from thermostat.  
+
+
+
Drillꢀ3/16”ꢀholesꢀforꢀdrywall.ꢀ  
Drillꢀ7/32”ꢀholesꢀforꢀplaster.  
MCR29480  
Wireꢀhole  
Mounting screws  
Wallꢀanchors  
MCR29481  
Must be installed by a trained, experienced technician  
•
ꢀ Readꢀtheseꢀinstructionsꢀcarefully.ꢀFailureꢀtoꢀfollowꢀtheseꢀinstructionsꢀ  
can damage the product or cause a hazardous condition.  
CAUTION: ELECTRICAL HAZARD  
Can cause electrical shock or equipment damage. Disconnect power before  
beginning installation.  
MERCURY NOTICE  
Ifꢀthisꢀproductꢀisꢀreplacingꢀaꢀcontrolꢀthatꢀcontainsꢀmercuryꢀinꢀaꢀsealedꢀtube,ꢀdoꢀnotꢀ  
place the old control in the trash. Contact your local waste management authority for  
instructions regarding recycling and proper disposal.  
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TM  
VisionPRO TH8000 Series  
Power options  
NOT  
USED  
MCR29482  
Forꢀ24VACꢀprimaryꢀpower,ꢀconnectꢀcommonꢀ  
sideꢀofꢀtransformerꢀtoꢀ“C”ꢀterminal.  
Insert supplied batteries for  
primary or backup power.  
Wiring  
Remove factory-installed jumper  
only for two-transformer systems.  
Push excess wire back into the wall opening. Plug  
wall opening with non-flammable insulation.  
NOT  
USED  
MCR29483  
Terminal Designations Shaded areas below apply only to TH8320/TH8321.  
Conventional Terminal Letters:  
Heat Pump Terminal Letters:  
R
Heating power. Connect to secondary  
side of heating system transformer.  
R
Heating power. Connect to secondary  
side of heating system transformer.  
Cooling power. Connect to secondary  
side of cooling system transformer.  
Common wire from secondary side of  
cooling system transformer.  
Rc Cooling power. Connect to secondary  
Rc  
C
side of cooling system transformer.  
C
Common wire from secondary side of  
cooling transformer (if 2 transformers).  
1st stage heat relay.  
W
Y
Y2  
1st stage compressor contactor.  
2nd stage compressor contactor.  
W2 2nd stage heat relay.  
1st stage compressor contactor.  
Y
Aux/EꢀAuxiliary/Emergencyꢀheatꢀrelay.  
Y2 2nd stage compressor contactor.  
Gꢀ Fanꢀrelay.  
S1 Optional outdoor or remote sensor.  
S2 Optional outdoor or remote sensor.  
Gꢀ  
L
Fanꢀrelay.  
Heat pump reset (powered continuously  
whenꢀSystemꢀisꢀsetꢀtoꢀEmꢀHeat;ꢀsystemꢀ  
monitorꢀwhenꢀsetꢀtoꢀHeat,ꢀCoolꢀorꢀOff).  
O/B Changeover valve for heat pumps.  
S1  
S2  
Optional outdoor or remote sensor.  
Optional outdoor or remote sensor.  
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Installation Guide  
Wiring  
Wiring guide—conventional systems  
Shaded areas below apply only to TH8320/TH8321.  
1H/1C System (1 transformer)  
1H/1C System (2 transformers)  
Rc  
R
W
Y
Power [1]  
[R+Rc joined by jumper]  
Heat relay  
Compressor contactor  
Fanꢀrelay  
Rc  
R
W
Y
Power (cooling transformer) [1,ꢀ2]  
Power (heating transformer) [1,ꢀ2]  
Heat relay  
Compressor contactor  
Fanꢀrelay  
G
G
C
S1  
S2  
24VACꢀcommonꢀ[3]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
C
S1  
S2  
24VACꢀcommonꢀ[3,ꢀ4]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
Heat Only System  
Heat Only System With Fan  
Rc  
R
W
C
Power [1]  
[R+Rc joined by jumper]  
Heat relay  
Rc  
R
W
G
Power [1]  
[R+Rc joined by jumper]  
Heat relay  
24VACꢀcommonꢀ[3]  
Fanꢀrelay  
S1  
S2  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
C
S1  
S2  
24VACꢀcommonꢀ[3]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
Heat Only System (Series 20)  
Rc  
R
W
Y
[R+Rc joined by jumper]  
Cool Only System  
Seriesꢀ20ꢀvalveꢀterminalꢀ“R”ꢀ[1]  
Seriesꢀ20ꢀvalveꢀterminalꢀ“B”  
Seriesꢀ20ꢀvalveꢀterminalꢀ“W”  
24VACꢀcommonꢀ[3]  
Rc  
R
Power [1]  
[R+Rc joined by jumper]  
Compressor contactor  
Fanꢀrelay  
Y
G
C
S1  
S2  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
C
S1  
S2  
24VACꢀcommonꢀ[3]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
2
H/2C System (1 transformer)  
Y2  
W2  
Rc  
R
W
Y
Cool relay 2  
Heat relay 2  
Power [1]  
[R+Rc joined by jumper]  
Heat relay 1  
2H/2C System (2 transformers)  
Y2  
W2  
Rc  
R
Cool relay 2  
Heat relay 2  
Power (cooling transformer) [1,ꢀ2]  
Power (heating transformer) [1,ꢀ2]  
Heat relay 1  
Cool relay 1  
W
G
Fanꢀrelay  
Y
Cool relay 1  
C
S1  
S2  
24VACꢀcommonꢀ[3]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
G
C
S1  
S2  
Fanꢀrelay  
24VACꢀcommonꢀ[3,ꢀ4]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
See [notes] below  
[
[
[
[
1] Power supply. Provide disconnect means and overload protection as required.  
2] Remove jumper for 2-transformer systems.  
3]ꢀ Optionalꢀ24VACꢀcommonꢀconnection.  
4] Common connection must come from cooling transformer.  
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TM  
VisionPRO TH8000 Series  
Wiring  
Wiring guide—heat pump systems  
Shaded areas below apply only to TH8320/TH8321.  
1H/1C Heat Pump (no auxiliary heat)  
2H/2C Heat Pump (no auxiliary heat)  
Rc  
R
O/B  
Y
G
C
Power [1]  
Y2  
Rc  
R
O/B  
Y
G
C
S1  
S2  
Compressor 2 relay  
Power [1]  
[R+Rc joined by jumper]  
Changeover valve [5]  
Compressor 1 relay  
Fanꢀrelay  
24VACꢀcommonꢀ[3]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
[R+Rc joined by jumper]  
Changeover valve [5]  
Compressor relay  
Fanꢀrelay  
24VACꢀcommonꢀ[3]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
S1  
S2  
2
H/1C Heat Pump (with auxiliary heat)  
Equipmentꢀmonitorꢀ[6,ꢀ7]  
Aux/E Auxiliary/Emergencyꢀheatꢀrelayꢀ(Heatꢀ2)  
L
3H/2C Heat Pump (with auxiliary heat)  
Y2  
L
Compressor 2 relay  
Equipmentꢀmonitorꢀ[6,ꢀ7]  
Rc  
R
O/B  
Y
G
C
Power [1]  
[R+Rc joined by jumper]  
Changeover valve [5]  
Compressor relay  
Aux/E Auxiliary/Emergencyꢀheatꢀrelayꢀ(Heatꢀ2)  
Rc  
R
O/B  
Y
G
C
S1  
S2  
Power [1]  
[R+Rc joined by jumper]  
Changeover valve [5]  
Compressor 1 relay  
Fanꢀrelay  
24VACꢀcommonꢀ[3]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
Fanꢀrelay  
24VACꢀcommonꢀ[3]  
Optionalꢀoutdoor/remoteꢀsensor  
Optionalꢀoutdoor/remoteꢀsensor  
S1  
S2  
See [notes] below  
[
[
[
[
[
1] Power supply. Provide disconnect means and overload protection as required.  
3]ꢀ Optionalꢀ24VACꢀcommonꢀconnection.  
5] O/B set to control as either O or B in installer setup.  
6] If Lꢀterminalꢀisꢀused,ꢀ24VACꢀcommonꢀ(terminalꢀC)ꢀmust be connected.  
7]ꢀ Heatꢀpumpꢀresetꢀ(poweredꢀcontinuouslyꢀwhenꢀthermostatꢀisꢀsetꢀtoꢀEm.ꢀHeat;ꢀsystemꢀmonitorꢀ  
whenꢀsetꢀtoꢀHeat,ꢀCool,ꢀorꢀOff).  
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Installation Guide  
Remove tab and mount thermostat  
Remove tab.  
Align pins on back of thermostat with  
slotsꢀinꢀwallplate,ꢀthenꢀpushꢀgentlyꢀ  
until thermostat snaps into place.  
MCR29484  
Set date and time  
Press st  
to set date  
Press st  
to set time  
TUE  
TUE  
Press st  
to set month  
15  
Press st  
to set year  
2
012  
6
1:00PM  
DONE  
DONE  
MCR29485  
Press DONE to save changes.  
Press DONE to save and exit.  
Installer setup  
1
.
Press SYSTEM.  
2. Press and hold  
SYSTEM  
these two buttons  
until the display  
changes.  
HEAT  
6
:00aM  
TUE  
DONE  
CANCEL  
FAN  
Inside  
AUTO  
7
0
SYSTEM  
3.ꢀ Changeꢀsettingsꢀ  
as required (see  
pagesꢀ7-9).  
HEAT  
0
120  
20  
6
:00aM  
HOLD  
DONE  
SCHED  
MCR29486  
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TM  
VisionPRO TH8000 Series  
Installer setup  
Function  
Setting  
0
120  
20  
0120  
20  
DONE  
DONE  
MCR29486  
Press st to  
Press st to  
Press DONE to exit & save settings.  
select function  
change setting  
Setup functions  
Settings & Options (factory default in bold)  
Shaded areas below apply only to TH8320/TH8321.  
0
0
120  
130  
Year  
first two digits)  
20 (2001-2099)  
21 (2100-2178)  
(
Year  
second two digits)  
12 (2012)  
(
ꢀ
[Otherꢀoptions:ꢀ00-99]  
0
0
0
140  
150  
160  
Month  
6ꢀ [Otherꢀoptions:ꢀ1-12]  
15ꢀ [Otherꢀoptions:ꢀ1-31]  
Date  
Schedule format  
4
7-day programming  
0
Non-programmable  
0
170  
System type  
1
1 heat/1 cool conventional  
2
3
4
5
ꢀ
1ꢀheat/1ꢀcoolꢀheatꢀpumpꢀ(noꢀaux.ꢀheat)  
Heatꢀonlyꢀ(2-wireꢀsystems)  
Heatꢀonlyꢀwithꢀfan  
HotꢀwaterꢀSeriesꢀ20ꢀsystemꢀ(powerꢀtoꢀopenꢀ&ꢀcloseꢀzoneꢀ  
valves/normallyꢀopenꢀzoneꢀvalves)  
Coolꢀonly  
2ꢀheat/1ꢀcoolꢀheatꢀpumpꢀ(withꢀaux.ꢀheat)  
2ꢀheat/2ꢀcoolꢀmultistageꢀconventional  
2ꢀheat/1ꢀcoolꢀmultistageꢀconventional  
ꢀ
ꢀ
ꢀ
6
7
8
9
1
1
1
ꢀ
ꢀ
ꢀ
ꢀ
0ꢀ 1ꢀheat/2ꢀcoolꢀmultistageꢀconventional  
1ꢀ 2ꢀheat/2ꢀcoolꢀheatꢀpumpꢀ(noꢀaux.ꢀheat)  
2ꢀ 3ꢀheat/2ꢀcoolꢀheatꢀpumpꢀ(withꢀaux.ꢀheat)  
0
0
0
0
0
0
180  
190  
200  
210  
220  
230  
Fan control  
heating)  
0
Gas/Oil heat (equipment controls heating fan)  
(
1ꢀ Electricꢀfurnaceꢀ(thermostatꢀcontrolsꢀheatingꢀfan)  
Changeover valve  
O/B terminal)  
0
O/B terminal controls valve in cooling  
(
1ꢀ O/Bꢀterminalꢀcontrolsꢀvalveꢀinꢀheating  
Auxiliary heat  
0
Electric backup heat  
Fossilꢀfuelꢀbackupꢀheat  
1
ꢀ
External fossil  
fuel kit  
1
0
External fossil fuel kit controls backup heat  
Thermostat controls backup heat (outdoor sensor required)  
1st stage com-  
pressor cycle rate  
3
ꢀ
Recommended for most compressors  
[Otherꢀoptions:ꢀ1,ꢀ2,ꢀ4,ꢀ5ꢀorꢀ6ꢀCPH]  
2nd stage com-  
3
Recommended for most compressors  
pressor cycle rate  
ꢀ
[Otherꢀoptions:ꢀ1,ꢀ2,ꢀ4,ꢀ5ꢀorꢀ6ꢀCPH]  
Continued on next page  
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Installation Guide  
Installer setup  
Setup functions  
Settings & Options (factory default in bold)  
Shaded areas below apply only to TH8320/TH8321.  
0
0
0
0
240  
250  
260  
280  
First stage heat  
cycle rate (CPH=  
cycles per hour)  
5
1
Gas or oil furnaces of less than 90% efficiency  
Steam or gravity systems  
3ꢀ Hotꢀwaterꢀsystemsꢀ&ꢀfurnacesꢀofꢀ90%+ꢀefficiency  
9
ꢀ
ꢀ
Electricꢀfurnaces  
[Otherꢀoptions:ꢀ2,ꢀ4,ꢀ6,ꢀ7,ꢀ8,ꢀ10,ꢀ11,ꢀ12ꢀCPH]  
Second stage heat  
cycle rate (CPH)  
5
1
3
9
Gas or oil furnaces of less than 90% efficiency  
Steam or gravity systems  
Hotꢀwaterꢀsystemsꢀ&ꢀfurnacesꢀofꢀ90%+ꢀefficiency  
Electricꢀfurnaces  
[
Otherꢀoptions:ꢀ2,ꢀ4,ꢀ6,ꢀ7,ꢀ8,ꢀ10,ꢀ11,ꢀ12ꢀCPH]  
Third stage heat  
cycle rate (CPH)  
9
1
3
5
Electric auxiliary heat or electric furnaces  
Steam or gravity systems  
Hotꢀwaterꢀsystemsꢀ&ꢀfurnacesꢀofꢀ90%+ꢀefficiency  
Gasꢀorꢀoilꢀfurnacesꢀofꢀlessꢀthanꢀ90%ꢀefficiency  
[
Otherꢀoptions:ꢀ2,ꢀ4,ꢀ6,ꢀ7,ꢀ8,ꢀ10,ꢀ11,ꢀ12ꢀCPH]  
Backlight  
0
1
Backlight on for approx. 8 seconds after keypress  
Backlightꢀalwaysꢀonꢀlowꢀintensity,ꢀfullꢀbrightꢀafterꢀkey-  
pressꢀ(requiresꢀ24VACꢀconnection)  
0
0
0
0
300  
310  
320  
330  
Manual/Auto  
changeover  
0
1
Manual changeover (Heat/Cool/Off)  
Automaticꢀchangeoverꢀ(Heat/Cool/Auto/Off)  
Auto changeover  
deadband  
3
Heat/cool temperature 3°F apart (1.5°C) ** See page 11  
[Otherꢀoptions:ꢀ2-9ꢀ(2°Fꢀtoꢀ9°F/1.5ꢀ°Cꢀtoꢀ5°C)]  
Temperature  
display  
0
1
Fahrenheit  
Celsius  
Daylight savings  
2
Auto-change to daylight savings timeꢀ(2007ꢀandꢀbe-  
yond,ꢀforꢀareasꢀthatꢀuseꢀtheꢀnewꢀ2007ꢀDSTꢀcalendar)  
Auto-changeꢀtoꢀdaylightꢀsavingsꢀtimeꢀ(throughꢀ2006,ꢀandꢀ  
for areas that do notꢀuseꢀtheꢀnewꢀ2007ꢀDSTꢀcalendar)  
Daylight savings time is turned off  
1
ꢀ
0
0
340  
Remote sensor  
0
1
2
3
No remote sensor  
Outdoor sensor (display only)  
Outdoor control sensor (select heat pumps) ** See page 11  
Indoor sensor  
0
0
0
350  
360  
380  
Heat pump  
compressor lockout  
0
No heat pump compressor lockout  
[Otherꢀoptions:ꢀ15,ꢀ20,ꢀ25,ꢀ30,ꢀ35,ꢀ40°Fꢀ(-9.5°Cꢀtoꢀ7°C)]  
Heat pump  
auxiliary lockout  
0
No heat pump auxiliary lockout  
[Otherꢀoptions:ꢀ40,ꢀ45,ꢀ50,ꢀ55,ꢀ60°Fꢀ(4.5°Cꢀtoꢀ15.5°C)]  
Dehumidification  
0
No dehumidification control  
control  
1
Thermostatꢀcontrolsꢀdehumidificationꢀwithꢀairꢀconditionerꢀ  
*
* See page 11  
Continued on next page  
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TM  
VisionPRO TH8000 Series  
Installer setup  
Setup functions  
Settings & Options (factory default in bold)  
0
500  
Furnace filter  
0
Off  
change reminder  
1
10-day run time (about 1 month)  
30-dayꢀrunꢀtimeꢀ(aboutꢀ3ꢀmonths)  
60-dayꢀrunꢀtimeꢀ(aboutꢀ6ꢀmonths)  
90-dayꢀrunꢀtimeꢀ(aboutꢀ9ꢀmonths)  
120-dayꢀrunꢀtimeꢀ(aboutꢀ1ꢀyear)  
365-dayꢀrunꢀtimeꢀ(aboutꢀ3ꢀyears)  
2
3
4
5
6
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
0
510  
Humidifier pad  
0
Off  
change reminder  
1ꢀ 90ꢀcalendarꢀdays  
2
3
ꢀ
ꢀ
180ꢀcalendarꢀdays  
365ꢀcalendarꢀdays  
0
0
0
0
0
0
0
0
0
0
520  
530  
540  
580  
600  
610  
640  
650  
660  
670  
UV lamp change  
reminder  
0
Off  
1ꢀ 365ꢀcalendarꢀdays  
Adaptive Intelligent  
Recovery™  
1
0
On  
Off  
** See page 11  
Program periods  
4
4 program periods (Wake, Leave, Return, Sleep)  
2ꢀprogramꢀperiodsꢀ(Wake,ꢀSleep)  
2
ꢀ
Compressor  
protection  
5
ꢀ
5 minute compressor off time ** See page 11  
[Otherꢀoptions:ꢀ0,ꢀ1,ꢀ2,ꢀ3ꢀorꢀ4-minuteꢀoffꢀtime]  
Heat temperature  
range stop  
90 Max. heat temperature setting is 90°F (32°C)  
[Otherꢀoptions:ꢀ40-89°Fꢀ(4.5°Cꢀtoꢀ32°C)]  
ꢀ
Cool temperature  
range stop  
50 Min. cool temperature setting is 50°F (10°C)  
[Otherꢀoptions:ꢀ51-99°Fꢀ(10.5°Cꢀtoꢀ37°C)]  
ꢀ
Clock format  
12 12-hour time (i.e., “3:30 pm”)  
4ꢀ 24-hourꢀtimeꢀ(i.e.,ꢀ“15:30”)  
2
Extended fan  
timer (heat)  
0
Off  
90ꢀ Fanꢀrunsꢀforꢀ90ꢀsecondsꢀafterꢀcallꢀforꢀheatꢀends  
Extended fan  
timer (cool)  
0
Off  
90ꢀ Fanꢀrunsꢀforꢀ90ꢀsecondsꢀafterꢀcallꢀforꢀcoolingꢀends  
Keypad lock  
0
1
Keypad unlocked (fully functional)  
Partially locked (access to temperature settings only)  
Fullyꢀlocked  
2
ꢀ
0
0
680  
690  
Heat temperature  
control  
2
1
Standard temperature control (recommended)  
Choose if room is warmer than set temperature  
Chooseꢀifꢀroomꢀdoesꢀnotꢀreachꢀsetꢀtemperature  
3
ꢀ
Cool temperature  
control  
2
1
Standard temperature control (recommended)  
Choose if room is cooler than set temperature  
Chooseꢀifꢀroomꢀdoesꢀnotꢀreachꢀsetꢀtemperature  
3
ꢀ
0
0
700  
710  
Temperature  
display offset  
0
ꢀ
Thermostat displays actual room temperature  
[Otherꢀoptions:ꢀ-3,ꢀ-2,ꢀ-1,ꢀ1,ꢀ2,ꢀ3°Fꢀoffsetꢀ(-1.5°Cꢀtoꢀ1.5°C)  
RESET  
0
No reset  
1
Reset installer options & program schedule to factory  
default (only date and time settings are retained)  
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Installation Guide  
Installer system test  
Duringꢀinstallerꢀsetup,ꢀpressꢀt  
repeatedlyꢀuntilꢀ“Test”ꢀappears.  
Test  
number  
System  
status  
1
0
120  
20  
DONE  
TEST  
0
DONE  
MCR29488  
Press st to  
Press st to  
select test  
change status  
Press DONE to terminate testing.  
Shaded areas below apply only to TH8320/TH8321.  
System test System status  
1
Cooling system  
0
1
2
Compressor and fan turn off  
Compressor and fan turn on  
Second stage compressor turns on  
2
3
Fan system  
0ꢀ Fanꢀturnsꢀoff  
1
ꢀ
Fanꢀturnsꢀon  
Heating system  
0
Heat and fan turn off  
1
ꢀ
Heatꢀturnsꢀonꢀ(fanꢀonꢀifꢀFunctionꢀ0170ꢀisꢀsetꢀforꢀheatꢀpump,ꢀ  
orꢀifꢀFunctionꢀ0180ꢀisꢀsetꢀtoꢀ“1”)ꢀꢀ**ꢀSeeꢀpageꢀ6  
Second stage heat turns on  
2
3
ꢀ
Thirdꢀstageꢀheatꢀturnsꢀon  
4
Emergency  
heating system  
0
1
Heat and fan turn off  
Heat and fan turn on  
CAUTION: EQUIPMENT DAMAGE HAZARD. Compressor protection is bypassed  
duringꢀtesting.ꢀToꢀpreventꢀequipmentꢀdamage,ꢀavoidꢀcyclingꢀtheꢀcompressorꢀquickly.  
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TM  
VisionPRO TH8000 Series  
Special functions  
Shaded areas below apply only to TH8320/TH8321.  
Auto Changeoverꢀ(SetupꢀFunctionꢀ0300):ꢀWhenꢀsetꢀtoꢀAuto,ꢀtheꢀthermostatꢀautomaticallyꢀselectsꢀ  
heating or cooling depending on the indoor temperature. Heat and cool settings must be at least 2 de-  
greesꢀapart.ꢀIfꢀfunctionꢀ0380ꢀisꢀsetꢀtoꢀOn,ꢀtheꢀheatꢀandꢀcoolꢀsettingsꢀmustꢀbeꢀatꢀleastꢀ5ꢀdegreesꢀapart.  
Remote Sensorꢀ(SetupꢀFunctionꢀ0340):ꢀIfꢀanꢀoptionalꢀoutdoorꢀsensorꢀisꢀinstalled,ꢀtheꢀthermostatꢀcanꢀ  
displayꢀtheꢀoutsideꢀtemperature.ꢀIfꢀanꢀoptionalꢀremoteꢀindoorꢀsensorꢀisꢀinstalled,ꢀtheꢀthermostatꢀwillꢀ  
display the temperature at the sensor location (the internal sensor in the thermostat is not used).  
Adaptive Intelligent Recoveryꢀ(SetupꢀFunctionꢀ0530):ꢀAllowsꢀtheꢀthermostatꢀtoꢀ“learn”ꢀhowꢀlongꢀtheꢀ  
furnaceꢀandꢀairꢀconditionerꢀtakeꢀtoꢀreachꢀprogrammedꢀtemperatureꢀsettings,ꢀsoꢀtheꢀtemperatureꢀisꢀ  
reached at the scheduled time.  
Compressor Protectionꢀ(SetupꢀFunctionꢀ0580):ꢀForcesꢀtheꢀcompressorꢀtoꢀwaitꢀaꢀfewꢀminutesꢀbeforeꢀ  
restarting,ꢀtoꢀpreventꢀdamage.ꢀDuringꢀthisꢀtime,ꢀtheꢀmessageꢀ“Wait”ꢀflashesꢀonꢀtheꢀdisplay.  
Dehumidification controlꢀ(SetupꢀFunctionꢀ0380):ꢀTH8321ꢀmodels monitor the indoor humidity level  
and automatically activate the cooling system to reduce humidity by lowering the temperature by up  
toꢀ3ꢀdegreesꢀbelowꢀtheꢀcurrentꢀcoolꢀsetting.  
Heat Pump Temperature Lockout (with fossil-fuelꢀbackup):ꢀIfꢀtheꢀthermostatꢀisꢀinstalledꢀwithꢀanꢀ  
optionalꢀoutdoorꢀsensor,ꢀyouꢀcanꢀselectꢀaꢀcompressorꢀlockoutꢀtemperatureꢀ(Functionꢀ0350).ꢀWhenꢀ  
theꢀoutdoorꢀtemperatureꢀisꢀbelowꢀtheꢀlockoutꢀtemperature,ꢀonlyꢀtheꢀauxiliaryꢀheatꢀoperates.ꢀWhenꢀtheꢀ  
outdoorꢀtemperatureꢀisꢀaboveꢀtheꢀlockoutꢀtemperature,ꢀonlyꢀtheꢀcompressorꢀoperates.  
Heat Pump Temperature Lockouts (with electric heatꢀbackup):ꢀIfꢀtheꢀthermostatꢀisꢀinstalledꢀwithꢀ  
anꢀoptionalꢀoutdoorꢀsensor,ꢀyouꢀcanꢀselectꢀaꢀcompressorꢀlockoutꢀtemperatureꢀ(Functionꢀ0350)ꢀand/  
orꢀanꢀauxiliaryꢀheatꢀlockoutꢀtemperatureꢀ(Functionꢀ0360).ꢀWhenꢀtheꢀoutdoorꢀtemperatureꢀisꢀbelowꢀtheꢀ  
compressorꢀlockoutꢀtemperature,ꢀonlyꢀtheꢀauxiliaryꢀheatꢀoperates.ꢀWhenꢀtheꢀoutdoorꢀtemperatureꢀisꢀ  
aboveꢀtheꢀauxiliaryꢀlockoutꢀtemperature,ꢀonlyꢀtheꢀcompressorꢀoperates.ꢀIfꢀtheꢀoutdoorꢀtemperatureꢀisꢀ  
betweenꢀtheꢀcompressorꢀandꢀauxiliaryꢀlockoutꢀtemperatures,ꢀbothꢀtheꢀcompressorꢀandꢀauxiliaryꢀheatꢀ  
can operate.  
Accessories & replacement parts  
Please contact your distributor to order replacement parts.  
Outdoor temperature sensor .............................. PartꢀNumberꢀC7089U1006  
Remote indoor temperature sensor.................. PartꢀNumberꢀC7189U1005  
Cover plate*............................................................ PartꢀNumberꢀ32003796-001  
*(Use to cover marks left by old thermostats.)  
1
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Installation Guide  
Specifications  
Temperature Ranges  
Electrical Ratings  
•
ꢀ Heat:ꢀ40°ꢀtoꢀ90°Fꢀ(4.5°ꢀtoꢀ32°C)  
Terminalꢀ  
Voltageꢀ(50/60Hz)ꢀ RunningꢀCurrent  
•
ꢀ Cool:ꢀ50°ꢀtoꢀ99°Fꢀ(10°ꢀtoꢀ37°C)  
WꢀHeatingꢀ  
20-30ꢀVacꢀ  
750ꢀmVꢀDCꢀ  
20-30ꢀVacꢀ  
20-30ꢀVacꢀ  
20-30ꢀVacꢀ  
20-30ꢀVacꢀ  
0.02-1.0ꢀA  
100ꢀmAꢀDC  
0.02-0.6ꢀA  
0.02-1.0ꢀA  
0.02-0.6ꢀA  
0.02-1.0ꢀA  
Operating Ambient Temperature  
ꢀ 0°ꢀtoꢀ120°Fꢀ(-18°ꢀtoꢀ48.9°C)  
(Powerpile)ꢀ  
•
W2ꢀHeatingꢀ  
YꢀCoolingꢀ  
Shipping Temperature  
ꢀ -30°ꢀtoꢀ150°Fꢀ(-34°ꢀtoꢀ66°C)  
•
Y2ꢀCoolingꢀ  
Operating Relative Humidity  
ꢀ 5%ꢀtoꢀ90%ꢀ(non-condensing)  
Aux/EꢀAux.ꢀheatꢀ  
ꢀEmergencyꢀheat  
•
O/BꢀChangeoverꢀ  
20-30ꢀVacꢀ  
0.02-0.6ꢀA  
0.02-0.6ꢀA  
Physical Dimensions  
•
ꢀ 4-9/16”ꢀHꢀxꢀ6”ꢀWꢀxꢀ1-3/8”ꢀD  
LꢀHeatꢀpumpꢀresetꢀ 20-30ꢀVacꢀ  
•ꢀ 116ꢀmmꢀHꢀxꢀ152ꢀmmꢀWꢀxꢀ35ꢀmmꢀD  
Need Help?  
Forꢀassistanceꢀwithꢀthisꢀproductꢀpleaseꢀvisitꢀhttp://customer.honeywell.com  
or call Honeywell Customer Care toll-free at 1-800-468-1502  
Automation and Control Solutions  
Honeywell International Inc.  
1
985ꢀDouglasꢀDriveꢀNorth  
GoldenꢀValley,ꢀMNꢀꢀ55422  
http://customer.honeywell.com  
®
©
U.S. Registered Trademark.  
2012 Honeywell International Inc.  
6
9-2693—01ꢀꢀꢀM.S.ꢀ01-12  
Printed in U.S.A.  

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