Honeywell TH8321U Thermostat User Manual


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Installation Guide
8
69-2693—01
ENGLISH
Setup functions Settings & Options (factory default in bold)
Shaded areas below apply only to TH8320/TH8321.
0240 First stage heat
cycle rate (CPH=
cycles per hour)
5 Gas or oil furnaces of less than 90% efciency
1 Steam or gravity systems
3 Hotwatersystems&furnacesof90%+efciency
9 Electricfurnaces
[Otheroptions:2,4,6,7,8,10,11,12CPH]
0250 Second stage heat
cycle rate (CPH)
5 Gas or oil furnaces of less than 90% efciency
1 Steam or gravity systems
3 Hotwatersystems&furnacesof90%+efciency
9 Electricfurnaces
[Otheroptions:2,4,6,7,8,10,11,12CPH]
0260 Third stage heat
cycle rate (CPH)
9 Electric auxiliary heat or electric furnaces
1 Steam or gravity systems
3 Hotwatersystems&furnacesof90%+efciency
5 Gasoroilfurnacesoflessthan90%efciency
[Otheroptions:2,4,6,7,8,10,11,12CPH]
0280 Backlight 0 Backlight on for approx. 8 seconds after keypress
1 Backlightalwaysonlowintensity,fullbrightafterkey-
press(requires24VACconnection)
0300 Manual/Auto
changeover
0 Manual changeover (Heat/Cool/Off)
1 Automaticchangeover(Heat/Cool/Auto/Off)
0310 Auto changeover
deadband
3 Heat/cool temperature 3°F apart (1.5°C) ** See page 11
[Otheroptions:2-9(2°Fto9°F/1.5°Cto5°C)]
0320 Temperature
display
0 Fahrenheit
1 Celsius
0330 Daylight savings 2 Auto-change to daylight savings time(2007andbe-
yond,forareasthatusethenew2007DSTcalendar)
1 Auto-changetodaylightsavingstime(through2006,and
for areas that do notusethenew2007DSTcalendar)
0 Daylight savings time is turned off
0340 Remote sensor 0 No remote sensor
1 Outdoor sensor (display only)
2 Outdoor control sensor (select heat pumps) ** See page 11
3 Indoor sensor
0350 Heat pump
compressor lockout
0 No heat pump compressor lockout
[Otheroptions:15,20,25,30,35,40°F(-9.5°Cto7°C)]
0360 Heat pump
auxiliary lockout
0 No heat pump auxiliary lockout
[Otheroptions:40,45,50,55,60°F(4.5°Cto15.5°C)]
0380 Dehumidication
control
0 No dehumidication control
1 Thermostatcontrolsdehumidicationwithairconditioner
** See page 11
Installer setup
Continued on next page
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