T8000C
Programmable Thermostat
OWNER’S GUIDE
69-1437EF
Features
•Program up to four time periods and temperature settings to complement your lifestyle.
•Set different schedules for weekdays and weekends.
•Programs are permanently held in non-volatile memory in the event of a power failure.
•Indefinite temperature hold.
•Preprogrammed for your convenience.
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Welcome to the world of comfort and energy savings with your new Honeywell programmable thermostat.
Your new Programmable Thermostat is designed to provide you with reliable, precise temperature control. When you follow the simple programming instructions in this manual, your thermostat automatically controls the temperature in your home, saving energy and allowing you to awake (or return home) to a comfortable level of heating or air conditioning.
Direct questions concerning the operation of this thermostat to Honeywell Customer Assistance at 1-800-468-1502, Monday-Friday, 7:00 a.m.-5:30 p.m., Central time.
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The thermostat display shows day, time, program period, and temperature.
The thermostat can be set for four time periods per day for weekdays and weekends.
Before programming the thermostat, you can use the following chart on page 5, to organize your program schedule.
Fill in the times and temperatures you desire for weekdays and weekends. If you decide not to program the thermostat, it will follow the preprogrammed time and temperature settings shown in Table 1.
Table 1. Preprogrammed Time
and Temperature Settings.
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Heat |
Cool |
Period |
Time |
Setpoint |
Setpoint |
Wake |
6:00 AM |
21° C |
26° C |
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(70° F ) |
(78° F ) |
Leave |
8:00 AM |
17° C |
29° C |
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(62° F ) |
(85° F ) |
Return |
6:00 PM |
21° C |
26° C |
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(70° F ) |
(78° F ) |
Sleep |
10:00PM |
17° C |
28° C |
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(62° F ) |
(82° F ) |
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Program Schedule
Weekday |
Start Time |
Heating Temperature |
Cooling Temperature |
Wake |
________ |
________ |
________ |
Leave |
________ |
________ |
________ |
Return |
________ |
________ |
________ |
Sleep |
________ |
________ |
________ |
Weekend |
Start Time |
Heating Temperature |
Cooling Temperature |
Wake |
________ |
________ |
________ |
Leave |
________ |
________ |
________ |
Return |
________ |
________ |
________ |
Sleep |
________ |
________ |
________ |
WAKE and RETURN start times should include extra lead time, based on outside temperature and equipment response time, to give your equipment a head start to heat or cool the house. The temperatures cannot be set any higher than 37° C (99° F) or any lower than 4° C (40° F).
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Programming
The thermostat is flexible and can be programmed for different schedules for weekdays and weekends, to meet your lifestyle needs.
Use the personal Program Schedule for planning your time and temperature settings for various times of the day. See page 5.
Four time periods are available during weekdays and weekends —WAKE, LEAVE, RETURN, and SLEEP.
WAKE is the time the thermostat turns on the heating/cooling equipment after an energy saving period. When deciding what time to set for your WAKE period, include extra lead time, depending on the outside temperature and your equipment response time, to give the equipment a head start to
heat or cool the house before you get up. (This will be a higher temperature during heating season, and a lower temperature during cooling season.)
LEAVE is the time period you can set for an energy-saving temperature while you are away at work or school. (This will be a lower temperature during heating season, and a higher temperature during cooling season.)
RETURN is the time the thermostat turns on the heating/cooling equipment after an energy saving period. When deciding what time to set for your RETURN period, include extra lead time, depending on the outside temperature and your equipment response time, to give the equipment a head start to heat or cool the house before you arrive home.
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SLEEP is the time period you can set for an energy-saving temperature while you are sleeping. (For more comfortable sleeping, some people choose not to raise the cool temperature during the night.)
IMPORTANT
Always press the keys with your fingertip or similar blunt tool. Sharp instruments like pens and pencil points can damage the keys.
Setting the Current Time and Day
1. To Set Current Time Press Select twice.
Press ▲ or ▼ |
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SET |
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to set current |
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PM |
time. |
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M12591A
While setting the current time, the word SET is flashing.
2.To Set Day of Week. Press Select again. Press ▲ or ▼
to set current day.
MON
M12593A
To use the preprogrammed time and temperature settings (see Table 1), press Hold now, to exit the programming mode. To enter a custom program to fit you life style, continue to step 3.
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Setting the Weekday Program
Slide the SYSTEM switch to the position, heat or cool, you want to program. A flame 
(heating) or a snowflake 
(cooling) will appear in the lower right corner of the display, when setting the program temperature.
3.Wake
a. Press Select. Press ▲ or ▼ to set
Wake time.
M12624A
b.Press Select. Press ▲ or ▼ to set
Wake temperature.
M14205A
4.Leave
a. Press Select. Press ▲ or ▼ to set
Leave time.
M12626A
b.Press Select. Press ▲ or ▼ to set Leave 
temperature.
5. Return |
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M14203A |
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a. Press Select. Press ▲ or ▼ to set |
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Return |
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time. |
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M12628A |
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b.Press Select. Press ▲ or ▼ to set Return 
temp-
erature.
6. Sleep |
M14204A |
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a.Press Select. Press ▲ or ▼ to set Sleep
time.
M12630A
b.Press Select. Press ▲ or ▼ to set
Sleep temperature.
M14207A
Setting the Weekend Program
7.Wake
a. Press Select. Press ▲ or ▼ to set
Wake time.
M12632A
b.Press Select. Press ▲ or ▼ to set
Wake 
temp-
erature.
M14206A
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8. |
Leave |
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b. |
Press Select. Press ▲ or ▼ to set |
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a. |
Press Select. Press ▲ or ▼ to set |
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Return |
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Leave |
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temp- |
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time. |
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erature. |
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10. |
Sleep |
M14210A |
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M12634A |
a. Press Select. Press ▲ or ▼ to set |
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b. |
Press Select. Press ▲ or ▼ to set |
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Sleep |
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Leave |
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time. |
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temp- |
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erature. |
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M12638A |
9. |
Return |
M14211A |
b. |
Press Select. Press ▲ or ▼ to set |
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a. |
Press Select. Press ▲ or ▼ to set |
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Sleep |
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Return |
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temp- |
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time. |
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erature. |
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SAT SUN |
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M14212A |
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M12636A |
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11.Press Select. End is displayed. Programming is complete. The thermostat will
revert to dis-
playing the current day time and temp-
erature in five
seconds. M12511A
Temporary Temperature Hold
1. Press ▲ or ▼ key to set a temporary
temperature
TEMPORARY
setting.
PM
WED
M14214A
NOTE: The temporary temperature setting remains in effect until the next program period. To cancel press Hold twice.
Indefinite Temperature Hold
The Hold key allows you to indefinitely hold a temperature. When Hold is active, the letters Hld are displayed continuously. Hold can be canceled by pressing the Hold key again.
1.Press Hold
2.Press ▲ or ▼ key to set indefinite
temperature setting.
M14213A
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Setting System and Fan
Use the SYSTEM and FAN switches to change the settings.
SYSTEM settings control the thermostat operation as follows:
Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling.
Slide the SYSTEM switch in the lower right corner of the thermostat to select the desired system setting.
FAN settings control the system fan as follows: On: Fan operates continuously.
Auto: Fan operates with equipment.
Slide the FAN switch in the lower left corner of the thermostat to select the desired fan setting.
Heat and Cool Indicators
Indicates a call for heat.
Indicates a call for cool.
NOTE: In the programing mode the 
and
indicate system setting.
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