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CT3451 PROGRAMMABLE THERMOSTAT
7 69-1620—1
— Press the ▲ key. Current configuration (CC) is
displayed. A typical example is shown, but CC
varies by model. (This information is for factory
use only.)
❑ Exit Installer Setup.
— Press the ▲ key to save all changes and return to
normal operation.
a
High efficiency furnace (90+).
b
Refer to the equipment manufacturer’s instructions.
9 PROGRAM YOUR THERMOSTAT
The thermostat is preprogrammed for your convenience
with the following time and temperature settings; see
Table 3. See energy saving charts at the end of this
document for energy-saving information.
Wake is the time period when you want the house at a
comfortable temperature when you get up in the morning.
NOTE: The heating and cooling program times are the
same. Changing your cooling Wake time also
changes your heating Wake time.
Leave is the time period you can set for an energy saving
temperature while you are away from home during the
day.
Return is the time period when you want the house at a
comfortable temperature when you come home during
the day.
Sleep is the time period when you can set an energy-
saving temperature while you are sleeping.
IMPORTANT
Always press the keys with your fingertip or sim-
ilar blunt tool. Sharp instruments like pens and
pencil points can damage the keyboard.
Setting Current Time and Day
1. To set current time, press Select twice. Press ▼
or ▲ key to set current time.
NOTE: While setting the current time, the word SET is
displayed.
2. To set day of week, press Select again. Press▼
or ▲ key to set current day.
To use the preprogrammed time and temperature
settings (see Table 3), press Hold to exit the
programming mode.
Setting Weekday Program
Slide the System switch to the position, Heat or Cool,
that you want to program. A flame (heating) or a
snowflake (cooling) appears in the right side of the
display, when setting the program temperature.
1. Wake
a. Press Select. Press ▼ or ▲ key to set Wake
time.
b. Press Select. Press ▼ or ▲ key to set Wake
temperature.
Table 2. Heating Cycle Rate.
System Cycle Per Hr
Steam, gravity 1
Hydronic heat, condensing gas
furnaces
a
3
Gas or oil forced air (default) 6
Electric heat 9
Special applications 4, 5, 12
Table 3. Preprogrammed Time
and Temperature Settings.
Period Time
Heat
Setpoint
Cool
Setpoint
Wake 6:00 AM 70°F (21°C) 78°F (26°C)
Leave 8:00 AM 62°F (17°C) 85°F (29°C)
Return 6:00 PM 70°F (21°C) 78°F (26°C)
Sleep 10:00 PM 62°F (17°C) 82°F (28°C)
M1469
2
M12590A
PM
M12591
A
SET
PM
M1853
4
SET
M1857
0
SET