Honeywell Chronotherm III User manual

J. H. • 10-94 • Form Number 69-0865
Chronotherm®III
Programmable Thermostat
Owner’s Manual
Printed in Taiwan R.O.C.

i 69-0865
Table of Contents
Programmed Recovery ............................................................................................................................................... 1
Recovery Setting ......................................................................................................................................................... 4
ProgrammingYourThermostat .................................................................................................................................. 6
5-1-1 Programming ................................................................................................................................................... 6
Program Schedule ............................................................................................................................................... 8
Set Current Day and Time ................................................................................................................................... 9
Heating Program .................................................................................................................................................. 9
Cooling Program ................................................................................................................................................ 10
Setting System and Fan Switches.......................................................................................................................... 10
Fan Switch ......................................................................................................................................................... 10
System Switch.................................................................................................................................................... 10
OperatingYour Thermostat....................................................................................................................................... 11
Temporarily Changing the Program........................................................................................................................ 11
Permanently Changing the Program ...................................................................................................................... 12
Manually Operating the Thermostat ....................................................................................................................... 12
Canceling Program Settings................................................................................................................................... 12
Checking the Program Times and Temperatures ................................................................................................... 13
Checking the Current Temperature Setting ............................................................................................................ 13

i 69-0865
Table of Contents
Programmed Recovery ............................................................................................................................................... 1
Recovery Setting ......................................................................................................................................................... 4
ProgrammingYourThermostat .................................................................................................................................. 6
5-1-1 Programming ................................................................................................................................................... 6
Program Schedule ............................................................................................................................................... 8
Set Current Day and Time ................................................................................................................................... 9
Heating Program .................................................................................................................................................. 9
Cooling Program ................................................................................................................................................ 10
Setting System and Fan Switches.......................................................................................................................... 10
Fan Switch ......................................................................................................................................................... 10
System Switch.................................................................................................................................................... 10
OperatingYour Thermostat....................................................................................................................................... 11
Temporarily Changing the Program........................................................................................................................ 11
Permanently Changing the Program ...................................................................................................................... 12
Manually Operating the Thermostat ....................................................................................................................... 12
Canceling Program Settings................................................................................................................................... 12
Checking the Program Times and Temperatures ................................................................................................... 13
Checking the Current Temperature Setting ............................................................................................................ 13

Programmed Recovery
PROGRAMMED
RECOVERY—BREAK-
THROUGH TECHNOLOGY
SENSES TEMPERATURE
MORE LIKE YOU DO
1 69-0865
ii 69-0865
M168
Your new thermostat is so smart, it’s almost human.
■ Your body perceives temperature from a variety of
sources,notonly fromtheair in theroom,but alsofrom
your surroundings—walls, windows and furnishings.
■
Humanbeingsfeeldifferences intemperatureasslight
as one degree Centigrade.
■
Commonhouseholdthermometersandstandardther-
mostats senseonlyairtemperature,whichmayor may
not reflect how hot or cold the room actually feels to a
human being.
■
Yournewthermostat readsthetemperature of thewall
as well as the air—and responds to temperature
changes as little as one degree Centigrade—so room
temperature is more likely to
feel right to you and your
family.
Maintaining Your Thermostat ................................................................................................................................... 14
Removing the Thermostat ...................................................................................................................................... 14
Replacing the Thermostat....................................................................................................................................... 15
Replacing the Batteries .......................................................................................................................................... 16
Power Outages ....................................................................................................................................................... 16
Glossary ..................................................................................................................................................................... 17
Troubleshooting Guide ............................................................................................................................................. 19
Quick Reference to Keys .......................................................................................................................................... 22
Index ........................................................................................................................................................................... 24
Limited One-Year Warranty ...................................................................................................................................... 25

Programmed Recovery
PROGRAMMED
RECOVERY—BREAK-
THROUGH TECHNOLOGY
SENSES TEMPERATURE
MORE LIKE YOU DO
1 69-0865
ii 69-0865
M168
Your new thermostat is so smart, it’s almost human.
■ Your body perceives temperature from a variety of
sources,notonly fromtheair in theroom,but alsofrom
your surroundings—walls, windows and furnishings.
■
Humanbeingsfeeldifferences intemperatureasslight
as one degree Centigrade.
■
Commonhouseholdthermometersandstandardther-
mostats senseonlyairtemperature,whichmayor may
not reflect how hot or cold the room actually feels to a
human being.
■
Yournewthermostat readsthetemperature of thewall
as well as the air—and responds to temperature
changes as little as one degree Centigrade—so room
temperature is more likely to
feel right to you and your
family.
Maintaining Your Thermostat ................................................................................................................................... 14
Removing the Thermostat ...................................................................................................................................... 14
Replacing the Thermostat....................................................................................................................................... 15
Replacing the Batteries .......................................................................................................................................... 16
Power Outages ....................................................................................................................................................... 16
Glossary ..................................................................................................................................................................... 17
Troubleshooting Guide ............................................................................................................................................. 19
Quick Reference to Keys .......................................................................................................................................... 22
Index ........................................................................................................................................................................... 24
Limited One-Year Warranty ...................................................................................................................................... 25

2 69-0865
3 69-0865
THE OPTIMUM COMFORT AND ENERGY SAVINGS
SOLUTION
■
This thermostat is actually a small but powerful com-
puter. When calculating the exact time to turn on your
furnace or air conditioner,it considers(1) airtempera-
ture, (2) the temperature of the wall and (3) when you
want the comfort temperature established.
■
During programmed recovery, the thermostat gradu-
ally 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 dur-
ing recovery by pressing the TEMPERATURE
REQUISE key.
■
Thissmart controllearns fromexperience .Eachday 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,
homeconstruction and heating/coolingsystem.Thether-
mostat calculates the SORTIE/RETOUR recovery sepa-
rately from the COUCHER/REVEIL recovery.
■
Withthisthermostatyoucanchoose whetheryouwant
to use Programmed Recovery or conventional recov-
ery.Use Programmed Recovery if you want to choose
theexacttimethattheroomreachesyour
comfort tem-
perature. Use conventional recovery if you prefer to
choose the exact time your furnace or air conditioner
comes on to start recovery.
IMPORTANT: With Programmed Recovery, program the
times when you want your home comfortable. The
thermostat will decide how early to begin the tem-
perature changes.
SYSTEM OPERATING
IN ENERGY SAVING MODE
SYSTEM OPERATING
IN COMFORT MODE
RECOVERY BEGINS RECOVERY CONTINUES
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. M9577

2 69-0865
3 69-0865
THE OPTIMUM COMFORT AND ENERGY SAVINGS
SOLUTION
■
This thermostat is actually a small but powerful com-
puter. When calculating the exact time to turn on your
furnace or air conditioner,it considers(1) airtempera-
ture, (2) the temperature of the wall and (3) when you
want the comfort temperature established.
■
During programmed recovery, the thermostat gradu-
ally 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 dur-
ing recovery by pressing the TEMPERATURE
REQUISE key.
■
Thissmart controllearns fromexperience .Eachday 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,
homeconstruction and heating/coolingsystem.Thether-
mostat calculates the SORTIE/RETOUR recovery sepa-
rately from the COUCHER/REVEIL recovery.
■
Withthisthermostatyoucanchoose whetheryouwant
to use Programmed Recovery or conventional recov-
ery.Use Programmed Recovery if you want to choose
theexacttimethattheroomreachesyour
comfort tem-
perature. Use conventional recovery if you prefer to
choose the exact time your furnace or air conditioner
comes on to start recovery.
IMPORTANT: With Programmed Recovery, program the
times when you want your home comfortable. The
thermostat will decide how early to begin the tem-
perature changes.
SYSTEM OPERATING
IN ENERGY SAVING MODE
SYSTEM OPERATING
IN COMFORT MODE
RECOVERY BEGINS RECOVERY CONTINUES
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. M9577

4 69-0865
5 69-0865
To determine which type of recovery is set into your
thermostat, make sure thermostat is powered with fresh
batteries, or is mounted and powered on the wall (see
page 16).
Press EN PROGRAMME key. Check thermostat dis-
play.
•If the ■shows in the lower right-hand corner (see il-
lustration), the thermostat is set for conventional re-
covery.If you would rather have Programmed Recov-
ery, remove thermostat from wallplate, turn screw 3A
(on back of thermostat) clockwise until it bot-
toms.
Do not overtighten.
•If the ■does not show, the thermostat is set for Pro-
grammed Recovery. If you would rather have conven-
tionalrecovery,removethermostat fromwallplate,turn
screw 3A (on back of thermostat) counterclockwise
1/2 of 1 turn.
Recovery Setting
Your thermostat includesa screwonthe backmarked
3A ,allowing for theProgrammed Recovery/conventional
recovery choice.
Your thermostat was shipped from the factory with the
screwpositioned forProgrammedRecovery.Yourinstaller
may have left the screw in this position, or may have
changedittoconventionalrecovery.Beforeprogramming,
you must know the recovery method selected for your
thermostat.
•With Programmed Recovery, the dwelling will reach
the comfort temperature at the exact time you have
programmed into the thermostat. See pages 1-3 for
detailed explanation of Programmed Recovery.
•With conventional recovery, the programmed time will
mark the start of recovery; therefore, you should pro-
gram the start time to be earlier than the desired com-
fort time. It may require some trial and error to arrive
at the best starting time, and the best starting time will
vary as the seasons change.
TUE WED THU FRI
M9576
INDICATES
THERMOSTAT IS SET FOR
CONVENTIONAL RECOVERY
RECOVERY
SELECTION
ADAPTIVE
INTELLIGENT
CONVENTIONAL
3A
IN
(FACTORY SETTING)
OUT 1/2 TO 1 TURN
3A
M2120C
TM

4 69-0865
5 69-0865
To determine which type of recovery is set into your
thermostat, make sure thermostat is powered with fresh
batteries, or is mounted and powered on the wall (see
page 16).
Press EN PROGRAMME key. Check thermostat dis-
play.
•If the ■shows in the lower right-hand corner (see il-
lustration), the thermostat is set for conventional re-
covery.If you would rather have Programmed Recov-
ery, remove thermostat from wallplate, turn screw 3A
(on back of thermostat) clockwise until it bot-
toms.
Do not overtighten.
•If the ■does not show, the thermostat is set for Pro-
grammed Recovery. If you would rather have conven-
tionalrecovery,removethermostat fromwallplate,turn
screw 3A (on back of thermostat) counterclockwise
1/2 of 1 turn.
Recovery Setting
Your thermostat includesa screwonthe backmarked
3A ,allowing for theProgrammed Recovery/conventional
recovery choice.
Your thermostat was shipped from the factory with the
screwpositioned forProgrammedRecovery.Yourinstaller
may have left the screw in this position, or may have
changedittoconventionalrecovery.Beforeprogramming,
you must know the recovery method selected for your
thermostat.
•With Programmed Recovery, the dwelling will reach
the comfort temperature at the exact time you have
programmed into the thermostat. See pages 1-3 for
detailed explanation of Programmed Recovery.
•With conventional recovery, the programmed time will
mark the start of recovery; therefore, you should pro-
gram the start time to be earlier than the desired com-
fort time. It may require some trial and error to arrive
at the best starting time, and the best starting time will
vary as the seasons change.
TUE WED THU FRI
M9576
INDICATES
THERMOSTAT IS SET FOR
CONVENTIONAL RECOVERY
RECOVERY
SELECTION
ADAPTIVE
INTELLIGENT
CONVENTIONAL
3A
IN
(FACTORY SETTING)
OUT 1/2 TO 1 TURN
3A
M2120C
TM

6 69-0865
7 69-0865
SORTIE is the time period you can set for an energy-
saving temperature while you are away at work or
school.(Thiswill be alowertemperature during the
heatingseason, ora higher temperatureduring the
cooling season.)
RETOUR is the time period when you want the house
at a comfortable temperature for family activities in
the evening.
COUCHER is the time period you can set for an en-
ergy-saving temperature while you are sleeping.
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 cool tempera-
ture during the night.)
You will set a different schedule for weekdays, Satur-
day and Sunday, because your requirements will prob-
ably be different for each.
Fill in the times and temperatures you desire for
weekdays, Saturday and Sunday. If you decide not to
program the thermostat, it will automatically control
heatingfrom 6:00 to 20:00 at 21°C.The temperature will
be 16°C from 20:00 to 6:00. Cooling is automatically
controlled at 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 ex-
ample,anarea that is occupied during weekdays would
only require programs for RÉVEIL and COUCHER.
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 EN PROGRAMME key, and continue from
the last step.
Programming Your Thermostat
The thermostat can be programmed in your hand be-
fore it is installed or after it is on the wall if you make sure
the batteries are installed. If you need to install or re-
place the batteries, refer to the Maintaining Your Ther-
mostat section.
5-1-1 PROGRAMMING
The Program Schedule chart can be helpful for plan-
ning your program schedule of time and temperature
settings for various times of the day.
Four time periods are available.
REVÉIL is the time period when you want the house
at a comfortable temperature while the family gets
upand getsready toleave forwork orschool. (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 a temperature.
RÉVEIL
HEURE
TEMPERATURE
JOUR
MODE
CHAUFF.
REFROID
COUCHER
SORTIE
AVANCER +CHAUD
RECULER +FROID
M9575
CHAUFF. REFROID.
MARCHE AUTO
VENT.
RETOUR
ARRÊT
PÉRIODE
ACTIVER
PROGRAMME
RÉGLAGE
CONSTANT
RÉGLAGE
ACTUEL
SAUTER
PROCHAINE
PÉRIODE
RÉGLER
JOUR/HEURE
REVENIER
PÉRIODE
PRÉCÉDENTE
SYSTEME
ECON D'ENERGIE