Honeywell T8611M7065 User manual

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J.H. • 5-94 • Form Number 69-0819
Microelectronic Programmable
Thermostat Owner’s Manual

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Table of Contents
Programmed Recovery ............................................... 3
Programming Your Thermostat ................................. 6
Programming ............................................................ 6
Program Schedule ............................................... 7
Set the Current Day and Time ............................11
Heating Program .................................................11
Copying One Day’s Program to Another Day .... 12
Cooling Program ................................................ 12
Setting System and Fan Switches.......................... 13
Fan Switch ......................................................... 13
System Switch.................................................... 13
Operating Your Thermostat ...................................... 14
Temporarily Changing the Program ........................ 14
Permanently Changing the Program ...................... 15
Manually Operating the Thermostat ....................... 15
Canceling Program Settings ................................... 15
Checking the Program Times and Temperatures ... 16
Checking the Current Temperature Settings .......... 16
Maintaining Your Thermostat .................................... 17
Removing the Thermostat ....................................... 17
Replacing the Thermostat ....................................... 18
Replacing the Batteries ........................................... 19
Power Outages........................................................ 19
Glossary ...................................................................... 20
Troubleshooting Guide .............................................. 23
Index ............................................................................ 26
Limited One-Year Warranty .............. Inside Back Cover

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Programmed Recovery
PROGRAMMED RECOVERY—
BREAK-THROUGH TECHNOLOGY
SENSES TEMPERATURE MORE LIKE YOU DO
M168
Your new thermostat is so smart, it’s almost human.
■Your body perceives temperature from a variety of
sources, not only from the air in the zone, but also from
your surroundings—walls, windows and furnishings.
■Human beings feel differences in temperature as
slight as two degrees Fahrenheit.
■Common household thermometers and standard
thermostats sense only air temperature, which may
or may not reflect how hot or cold the zone actually
feels to a human being.
■Your new thermostat reads the temperature of the wall
as well as the air—and responds to temperature
changes as little as one degree Fahrenheit—so zone
temperature is more likely to feel right to you and
your family.
THE OPTIMUM COMFORT AND ENERGY SAVINGS
SOLUTION
■
This thermostat is actually a small but powerful
computer.
When calculating the exact time to turn on
your furnace or air conditioner, it considers: (1) air
temperature, (2) temperature of the wall and (3) when
you want the comfort temperature established.

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■ During programmed recovery, the thermostat
gradually increases the control temperature and
turns the equipment on and off
several times to save
energy by avoiding
overshooting the comfort
temperature. You can see the current control
temperature anytime during recovery by pressing the
PRESENT SETTING key.
■
This smart control learns from experience . Each day it
checks how closely it
hit the target and adjusts the
recovery start time accordingly.
It typically takes four to eight days after installation for
this thermostat to adjust to the weather, your life style,
home construction and heating/cooling system. The
thermostat calculates the LEAVE/RETURN recovery
separately from the SLEEP/WAKE recovery.
IMPORTANT:
With Programmed Recovery, program the
times when you want your home comfortable. The
thermostat will decide how early to begin the
temperature changes.
NOTE: Some models will show 32°F instead of the current
temperature, indicating the thermostat is operating on
backup batteries until the thermostat is mounted on the
wallplate and the system is powered.

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AM
PM
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED
SET
PT
AM
PM
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED
SET
PT
AM
PM
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED
SET
PT
AM
PM
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED
SET
PT
System Operating
in Energy Savings Mode
Recovery Begins Recovery Continues
System Operating
in Comfort Mode
ENERGY
SAVINGS
PERIOD
RECOVERY FROM ENERGY SAVINGS COMFORT
PERIOD
TIME
TEMPERATURE
THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY
TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON.
M171

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Programming Your Thermostat
The thermostat can be programmed in your hand
before it is installed or after it is on the wall if you make
sure the batteries are installed. If you need to install or
replace the batteries, refer to the Maintaining Your
Thermostat section.
Your thermostat can be programmed for seven days
(separate programs for each day of the week).
PROGRAMMING
The personal programming chart can be helpful for
plannng your program schedule of time and temperature
settings for various times of the day.
Four time periods are available:
MORNING is the time period when you want the zone
at a comfortable temperature to begin the day. (This
will be a higher temperature during the heating
season, or a lower temperature during the cooling
season.) This is the only period that must contain a
time and temperature for every day.
MIDDAY is the time period you can set for an energy-
saving temperature while the zone is unoccupied.
(This will be a lower temperature during the heating
season, or a higher temperature during the cooling
season.)
EVENING is the time period when you want the zone
at a comfortable temperature for family activities in
the evening.
NIGHT is the time period you can set for an energy-
saving temperature while you are sleeping or the
zone is unoccupied. Set it to start at your family’s
normal bedtime. (For more comfortable sleeping in
the cooling season, some people choose not to
raise the cooling temperature during the night.)
You can set a different schedule for each day of the
week because your requirements will probably be
different for each day.
Fill in the times and temperatures you desire for each
day of the week. If you decide not to program the

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thermostat, it will automatically control heating from
6:00 AM to 10:00 PM at 70°F [21°C]. The temperature
will be 60°F [16°C] from 10:00 PM to 6:00 AM. Cooling is
automatically controlled at 78°F [26°C] 24 hours a day.
Also, you do not need to enter a time and temperature
program for all periods if your schedule does not require
it. For example, a zone that is occupied Monday and
Tuesday only requires programs for MORNING and
NIGHT.
IMPORTANT:
Always press the keys with your finger or
similar blunt tool. Use of sharp instruments like a
pen or pencil point can damage the keyboard.
If you make an error at any time during programming,
just press the RUN PROGRAM key, and continue at the
step where you left off.
PROGRAM SCHEDULE
Sunday Start Time Heating Temp 1Cooling Temp 1
MORNING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
MIDDAY ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
EVENING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
NIGHT ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
1See footnote on page 9.

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Monday Start Time Heating Temp 1Cooling Temp 1
MORNING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
MIDDAY ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
EVENING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
NIGHT ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
Tuesday
MORNING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
MIDDAY ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
EVENING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
NIGHT ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
Wednesday
MORNING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
MIDDAY ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
EVENING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
NIGHT ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
1See footnote on page 9.

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Thursday Start Time Heating Temp 1Cooling Temp 1
MORNING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
MIDDAY ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
EVENING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
NIGHT ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
Friday
MORNING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
MIDDAY ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
EVENING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
NIGHT ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
Saturday
MORNING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
MIDDAY ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
EVENING ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
NIGHT ––––––––––––––––––––– –––––––––––––––––––––– ––––––––––––––––––––––
1Heating and cooling temperatures must be at least 3°F apart for proper control in the AUTO mode.

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M8368
SYSTEM
RUN
PROGRAM
PERIOD
TIME
TEMPERATURE
PRESENT
SETTING
SKIP
NEXT
PERIOD
CHANGE
TO LAST
PERIOD
SET
PRESENT
DAY/TIME
HOLD
TEMP
DAY
SET
HEAT/COOL CANCEL
PERIOD
COPY
FROM AHEAD WARMER
BACK COOLER
WED
MIDDAY
AM
HEAT ON
HEAT AUTO COOL ON AUTO
FAN
ROOM
COPY
TO
OFF
EM. HT EM. HT AUX. HT CHECK
MANUALLY
OPERATE THE
THERMOSTAT
CANCEL A
PROGRAM PERIOD
SELECT A DAY
TO COPY A PROGRAM TO
SET THE
TIME LATER
SET A COOLER
TEMPERATURE
CHANGE THE PROGRAM
BACK TO THE LAST SETTTING
SKIP THE NEXT
PROGRAM PERIOD
SET A WARMER
TEMPERATURE
SEE THE
CURRENT SETTING
SET THE TIME EARLIER
SELECT ONE DAY'S PROGRAM
TO COPY TO ANOTHER DAY
SELECT AND SET A
PROGRAM PERIOD
RETURN TO
THE PROGRAM
SET CURRENT
DAY AND TIME