User manual | 69-0743 - Programmable Multistage Thermostat

Programmable Multistage Thermostat

OWNER’S GUIDE

Your new programmable thermostat is a precision instrument that’s quality-built to give you many years of satisfactory service. It’s a “smart” thermostat that lets you save energy while still maintaining the standard of comfort you want in your home.

This Owner's Guide will show you how to get the most benefit from your new thermostat.

Programmable Multistage Thermostat

OWNER’S GUIDE

This Owner's Guide will show you how to get the most benefit from your new thermostat.

Monitor thermostat operation, read current time and room temperature at a glance.

Set different schedules for weekdays,

Saturday, and

Sunday.

Choose manual or automatic thermostat operation.

Program up to four different time periods in each schedule.

Features

Check status light to see if the thermostat is on, even in the dark.

Set the temperature warmer or cooler at the touch of a key.

Bypass the stored program for a single period.

Choose system and fan operating modes with the thermostat switches (on subbase).

Simple Four-Step Programming

Of course, you can use the schedule preprogrammed into your new thermostat (see

Glossary, page 35). But it’s an easy matter to program the thermostat to fit your lifestyle.

Set the current time and day. See page 6.

Set the program schedule and heating temperatures. See page 7.

Set the cooling temperatures. See page 14.

Set the system and fan switches. See page 20.

Adaptive Intelligent Recovery™ ........................... 1-4

Programming Your Thermostat .......................... 5-22

Set the current day and time .................................. 6

Set the program schedule and heating temperatures ......................................... 7

Set the cooling temperatures ................................ 14

Set the system and fan switches on the subbase 20

Operating Your Thermostat ............................... 23-30

Temporarily changing the program ...................... 23

Permanently changing the program ..................... 25

Manually operating the thermostat ....................... 26

Canceling the program settings ............................ 27

Checking the program times and temperatures ... 28

Checking the current temperature setting ............ 29

Maintaining Your Thermostat ............................ 31-34

Removing the thermostat ..................................... 31

Replacing the thermostat ...................................... 32

Replacing the batteries ......................................... 33

Power outages ...................................................... 34

Glossary .............................................................. 35-36

Your Personal Program ..................................... 37-38

Troubleshooting Guide ...................................... 39-40

Chronotherm

III Thermostat Questions ......... 41-42

Quick Reference to the Keys ............................. 43-44

Index ..................................................................... 45-46

Limited One-Year Warranty .................................... 47

CONSIDER THE COMPLETE

PACKAGE FOR A PERFECT

CLIMATE

SYSTEM IN

YOUR HOME

How it works...

THE

THERMOSTAT IS ONE

PART OF A PERFECT CLIMATE ®

SYSTEM, AN INDOOR ENVIRONMENT THAT

PROVIDES TOTAL INDOOR COMFORT. IT MAKES

YOU FEEL BETTER; ALLOWS YOU TO LIVE AND WORK

IN A MORE COMFORTABLE ENVIRONMENT; ACHIEVES

MAXIMUM ENERGY SAVINGS AND MAINTAINS PRECISE

CONTROL OVER INDOOR TEMPERATURE AND HUMIDITY.

HONEYWELL

PROGRAMMABLE

THERMOSTAT

HONEYWELL

DEHUMIDISTAT

HOME

VENTILATION

SYSTEM

FRESH AIR

CONTROL

HONEYWELL

ELECTRONIC

AIR CLEANER

PERFORMANCE

STATUS

INDICATOR

HONEYWELL

RESIDENTIAL

SECURITY

SYSTEM

CONDITIONED

AIR

CONDITIONED

AIR

RETURN AIR

SUPPLY AIR

OPTIMAL

EFFICIENCY AIR

CONDITIONER

OR HEAT PUMP

HUMIDIFIER

OPTIMAL

EFFICIENCY

FORCED AIR

FURNACE

HONEYWELL

WATER FILTER

M3755

STALE AIR

EXHAUST

COLD AIR

RETURN

HONEYWELL

ELECTRONIC AIR CLEANER

FRESH

HONEYWELL

HOME

AIR TO

HOME

VENTILATION

SYSTEM

STALE

AIR FROM

BATHS

FRESH AIR

INTAKE ii

Honeywell manufactures the following components of a Perfect Climate

System:

Honeywell Chronotherm

Programmable Thermostats

Honeywell F50, the air cleaners of choice

Honeywell Dehumidistats

Honeywell Home Ventilation Systems

Honeywell F76 Water Filter

Honeywell Home Security Systems iii

ADAPTIVE INTELLIGENT RECOVERY

™

ADAPTIVE INTELLIGENT

RECOVERY™—BREAKTHROUGH

TECHNOLOGY SENSES

TEMPERATURE MORE LIKE YOU DO

M168

The Chronotherm

III Thermostat is so smart, it’s almost human.

■

Your body perceives temperature from a variety of sources, not only from the air in the room, 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 room actually feels to a human being.

■

The Chronotherm III Thermostat reads the temperature of the wall as well as the air—and responds to temperature changes as little as one degree

Fahrenheit—so room temperature is more likely to feel right to you and your family.

ADAPTIVE INTELLIGENT

RECOVERY™

ADAPTIVE INTELLIGENT RECOVERY

™

THE CHRONOTHERM

III

THERMOSTAT—THE OPTIMUM

COMFORT AND ENERGY

SAVINGS SOLUTION

System Operating in Energy Savings Mode

REPL

BAT

SET

SUN MON TUE WED THU FRI SAT COOL ON HEAT ON

WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED

Recovery Begins

REPL

BAT

SET

SUN MON TUE WED THU FRI SAT COOL ON HEAT ON

WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED

REPL

BAT

SET

SUN MON TUE WED THU FRI SAT COOL ON HEAT ON

WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED

Recovery Continues

System Operating in Comfort Mode

REPL

BAT

SET

SUN MON TUE WED THU FRI SAT COOL ON HEAT ON

WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED

ENERGY

SAVINGS

PERIOD

RECOVERY FROM ENERGY SAVINGS

TIME

COMFORT

PERIOD

M3780

■

The Chronotherm III 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) the temperature of the wall and (3) when you want the comfort temperature established.

■

During Adaptive Intelligent Recovery™, the thermostat increases the control temperature gradually 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 the Chronotherm III

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.

PROGRAMMING YOUR THERMO-

STAT

IMPORTANT

PROGRAMMING YOUR THERMOSTAT

With Adaptive Intelligent Recovery™, program the times for when you want your home comfortable. The thermostat will decide how early to begin the temperature changes.

NOTE: Some models will show

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.

STEP 1

SET THE CURRENT DAY

AND TIME

You can program this thermostat either on the wall or in your hand. SEE PAGE

31 TO FIND OUT HOW TO REMOVE

THE THERMOSTAT FROM THE

WALL.

Always press the keys with your fingertip or similar blunt tool. Sharp instruments like a pen or pencil point can damage the keyboard.

NOTE: Check the glossary, page 35, for definitions of unfamiliar words.

SET

PR ESENT

DAY/TIME

DAY

AHEAD

BACK

Press and release. The display shows 1:00 PM MON.

Press and hold until the current day appears in the display.

Press and hold until the current time appears in the display. Be sure AM or PM appears as desired.

You have programmed the current day and time. Go on to

Step 2.

MON

TUE

M5015

M5016

TUE

M5017

PROGRAMMING YOUR

THERMOSTAT

PROGRAMMING YOUR THERMOSTAT

STEP 2

SET THE PROGRAM SCHEDULE

AND HEATING TEMPERATURES

Before You Begin…

The schedule form on page 37 provides an opportunity to plan your schedule.

Now…

Start by programming the WAKE time and temperature for weekdays.

The thermostat requires a program for

WAKE. You can program LEAVE,

RETURN and SLEEP or not, as you please.

Press and release. Note that the display

WAKE

SET

HEAT/COOL

DAY

AHEAD

BACK

shows WAKE and the preprogrammed time and temperature.

If the display reads COOL, press and release to switch to HEAT.

If display reads SAT or SUN, press and hold until MON TUE

WED THU FRI appears.

Press and hold until the display shows the desired starting time.

WAKE

MON TUE WED THU FRI

WAKE

MON TUE WED THU FRI

WAKE

MON TUE WED THU FRI

WAKE

MON TUE WED THU FRI

ON HEAT

SET

M5018

ON HEAT

SET

M5018

ON HEAT

SET

M5018

ON HEAT

SET

M5019

WARMER

COOLER

Press and hold until the display shows the desired temperature.

If the display starts to blink while you are holding down

TEMPERATURE WARMER or COOLER, you have reached the setting limit. If your thermostat can switch automatically between heating and cooling, the heating temperature must be at least three degrees below the air conditioning temperature. For example, if the cooling setting is

F, the maximum heating setting is 72

WAKE

MON TUE WED THU FRI ON HEAT

SET

M5020

PROGRAMMING YOUR THERMOSTAT

Program the LEAVE time and temperature, if desired.

NOTE: You can cancel the LEAVE,

RETURN or SLEEP program by holding down the period key until the time and temperature disappear from the display.

LEAVE

AHEAD

Press and release. The display shows LEAVE, but no time or temperature.

Press and hold until the display shows the desired starting time.

MON TUE WED THU FRI

LEAVE

MON TUE WED THU FRI

LEAVE

BACK

ON HEAT

SET

M5021

ON HEAT

SET

M5022

WARMER

COOLER

Press and hold until the display shows the desired temperature.

MON TUE WED THU FRI

LEAVE

ON HEAT

SET

M5023

Program the RETURN time and temperature, if desired.

RETURN

Press and release. The display shows RETURN, but no time or temperature.

Press and hold until the display shows the desired starting time.

AHEAD

BACK

WARMER

COOLER

Press and hold until the display shows the desired temperature.

MON TUE WED THU FRI

RETURN

ON HEAT

SET

M5024

MON TUE WED THU FRI

RETURN

ON HEAT

SET

M5025

MON TUE WED THU FRI

RETURN

ON HEAT

SET

M5026

PROGRAMMING YOUR THERMOSTAT

Program the SLEEP time and temperature, if desired.

SLEEP

Press and release. The display shows SLEEP and the preprogrammed time and temperature.

MON TUE WED THU FRI

SLEEP

ON HEAT

SET

M5027

Press and hold until the display shows the desired starting time.

AHEAD

BACK

MON TUE WED THU FRI

SLEEP

ON HEAT

SET

M5060

WARMER

COOLER

Press and hold until the display shows the desired temperature.

MON TUE WED THU FRI

SLEEP

ON HEAT

SET

M5028

Set the SATURDAY schedule. Use the same procedure as for weekdays.

DAY

Press and release until SAT appears on the display.

WAKE

SLEEP

Press WAKE, LEAVE, RETURN or SLEEP to select the time period.

LEAVE

RETURN

SAT

SLEEP

ON HEAT

SET

M5029

AHEAD

BACK

Use the AHEAD/BACK keys to set the time and the WARMER/

COOLER keys to set the temperature.

WARMER

COOLER

PROGRAMMING YOUR THERMOSTAT

Set the SUNDAY schedule. Use the same procedure as for weekdays.

DAY

Press and hold until SUN appears on the display.

SUN

WAKE

Press WAKE, LEAVE, RETURN or SLEEP to select the time period.

LEAVE

SLEEP

SLEEP RETURN

ON HEAT

SET

M5030

AHEAD

BACK

Use the AHEAD/BACK keys to set the time and the WARMER/

COOLER keys to set the temperature.

You have completed setting the program schedule and heating temperatures. To set air conditioning, go to Step 3.

WARMER

COOLER

If you do not want to program cooling temperatures, skip Step 3 and press the RUN PROGRAM key.

STEP 3

SET THE COOLING

TEMPERATURES

The program times are the same for both heating and cooling. Only the cooling temperatures need to be programmed if you have already programmed for heating. To set times as you program the cooling temperatures, use the TIME AHEAD and BACK keys as described in Step 2. But if you change times for cooling, you are also changing them for heating!

First program the WAKE temperature for weekdays.

WAKE

SET

HEAT/COOL

DAY

Press and release. The display shows WAKE and the time and temperature you programmed for heating.

SUN

WAKE

Press and release so COOL shows on the display, along with the preprogrammed cooling temperature.

If display reads SAT or SUN, press and hold until MON TUE

WED THU FRI appears.

SUN

WAKE

ON HEAT

SET

M5031

COOL

SET

M5032

WAKE

MON TUE WED THU FRI COOL

SET

M5033

PROGRAMMING YOUR THERMOSTAT

WARMER

COOLER

Press and hold until the display shows the desired temperature.

If the display blinks while you hold down TEMPERATURE

WARMER or COOLER, you have reached the setting limit. If your thermostat can switch automatically between heating and cooling, the cooling temperature must be at least three degrees higher than the corresponding heating temperature. For example, if the heating setting is

F, the minimum cooling setting is 73

F. If you desire a lower cooling temperature, the heating temperature first must be lowered accordingly.

WAKE

MON TUE WED THU FRI COOL

SET

M5034

Program the LEAVE temperature, if desired.

LEAVE

WARMER

COOLER

Press and release. The display shows LEAVE, the time programmed for heating, and 78

Press and hold until the display shows the desired temperature.

MON TUE WED THU FRI

LEAVE

COOL

SET

M5035

MON TUE WED THU FRI

LEAVE

COOL

SET

M5036

Program the RETURN temperature, if desired.

RETURN

WARMER

COOLER

Press and release. The display shows RETURN, the time programmed for heating, and

Press and hold until the display shows the desired temperature.

MON TUE WED THU FRI

RETURN

COOL

SET

M5037

MON TUE WED THU FRI

RETURN

COOL

SET

M5038

PROGRAMMING YOUR THERMOSTAT

Program the SLEEP temperature, if desired.

SLEEP

Press and release.

MON TUE WED THU FRI

SLEEP

COOL

SET

M5039

WARMER

Press and hold until the display shows the desired temperature.

MON TUE WED THU FRI

SLEEP

COOL

SET

M5040

COOLER

Set the cooling temperatures for the

SATURDAY schedule. Use the same procedure as for weekdays.

DAY

Press and hold until SAT appears on the display.

SAT COOL

SLEEP

SET

M5041

WAKE

SLEEP

Press WAKE, LEAVE, RETURN or SLEEP to select the time period.

LEAVE

RETURN

WARMER

COOLER

Use the WARMER/COOLER keys to set the temperature.

Set the cooling temperatures for the

SUNDAY schedule. Use the same procedure as for weekdays.

DAY

WAKE

SLEEP

Press and hold until SUN appears on the display.

SUN

SLEEP

COOL

SET

M5042

Press WAKE, LEAVE, RETURN or SLEEP to select the time period.

LEAVE

RETURN

PROGRAMMING YOUR THERMOSTAT

WARMER

COOLER

Use the WARMER/COOLER keys to set the temperature.

You have completed programming the cooling temperatures.

RUN

PROGRAM

Press and release to start the program.

Go to Step 4.

TUE

LEAVE

SET

M5043

STEP 4

SET THE SYSTEM AND FAN

SWITCHES ON THE SUBBASE.

Depending on thermostat model, some of the switch positions shown may not be available to you. Note the positions provided on your subbase, then set the switch(es) as desired.

First set the fan switch.

FAN ON: The fan runs continuously. Use for improved air circulation during special occasions or for more efficient electronic air cleaning.

FAN AUTO: Normal setting for most homes. The fan goes on and off with the air conditioner in summer. In winter, the fan on most systems starts a few minutes after the furnace comes on. It stops a few minutes after the furnace goes off. The fan starts and stops with the furnace in some electric heat systems and with the compressor in heat pump systems.

ON AUTO

FAN

M3763

PROGRAMMING YOUR THERMOSTAT

Then set the system switch.

HEAT: The thermostat controls your heating system.

HEAT AUTO

COOL

OFF

AUTO (select models only): The thermostat controls either your heating or cooling system, depending on room temperature.

COOL: The thermostat controls your cooling system.

HEAT

AUTO COOL

OFF

HEAT AUTO COOL OFF

Now, while you enjoy precision temperature control, read on to learn about the operating flexibility that makes this thermostat THE SMART CHOICE.

OFF: Both the heating and cooling systems are off.

You have finished programming your thermostat.

HEAT AUTO COOL OFF

If you removed it from the wall to program, replace it following the procedure on page 32.

M3762

OPERATING YOUR THERMOSTAT

TEMPORARILY CHANGING THE

PROGRAM

These features let you customize the program for those times when someone comes home early, or you’re staying up late, or you plan to be out for the evening.

To keep the current temperature through the next program period:

SKIP

NEXT

PERIOD

To go back to the temperature of the previous program period:

CHANGE

TO LAST

PERIOD

Press and release. The name of the period to be skipped will flash in the display until the next regularly scheduled period starts.

Press and release. The display will show the name of the previous period and flash

TEMPORARY until the next regularly scheduled period starts.

TUE

LEAVE RETURN

M5044

WAKE

TUE

TEMPORARY

M5045

To temporarily raise or lower the temperature for the current period only:

WARMER

COOLER

Press and hold until the desired temperature is reached. The display will flash TEMPORARY until the next programmed time period starts.

If you change your mind:

TEMPORARY

ON HEAT

M5046

RUN

PROGRAM

Press and release to cancel any of the temporary settings.

TUE

LEAVE

M5047

OPERATING YOUR

THERMOSTAT

OPERATING YOUR THERMOSTAT

PERMANENTLY CHANGING THE

PROGRAM

If your schedule changes or you want a different temperature, you can update any setting without affecting other program settings.

WAKE

SLEEP

Press and release the desired period key.

DAY

AHEAD

BACK

Press and hold until the desired day schedule shows on the display.

Press and hold the Time or

Temperature keys until the display shows the desired new program.

LEAVE

RETURN

WARMER

COOLER

RUN

PROGRAM

Press and release to return to normal operation.

MANUALLY OPERATING THE

THERMOSTAT

This feature is particularly useful when you go on vacation or other extended absences. It does not cancel your program.

HOLD

TEMP

WARMER

COOLER

Press and release.

Press and hold to change the temperature setting. After a few seconds, the display will show the current temperature.

PRESENT

SETTING

Press and release to check the temperature setting.

RUN

PROGRAM

Press and release to cancel hold.

NOTE: Moving the system switch also cancels hold.

ON HEAT

SET

M5050

TUE

LEAVE

M5051

ON HEAT

SET

M5048

ON HEAT

SET

M5049

OPERATING YOUR THERMOSTAT

CANCELING THE PROGRAM

SETTINGS

The thermostat requires time and temperature settings in the WAKE period, but any of the others can be canceled. Weekday, Saturday and

Sunday settings are canceled separately.

SLEEP

LEAVE

RETURN

Press and hold the desired period key until the time and temperature clear from the display (about three seconds).

MON TUE WED THU FRI

LEAVE

RUN

PROGRAM

Press and release to return to normal operation.

MON

RETURN

ON HEAT

M5052

M5053

CHECKING THE PROGRAM TIMES

AND TEMPERATURES

You can check all the stored settings without affecting the permanent program.

WAKE

SLEEP

LEAVE

RETURN

Press and release the desired period key. The start time and temperature setting will appear on the display.

MON TUE WED THU FRI

SLEEP

ON HEAT

SET

M5054

DAY

RUN

PROGRAM

Press and release to display the next daily time and temperature for that period.

Press and release to return to normal operation.

SAT

SLEEP

ON HEAT

SET

M5055

MON

RETURN

M5056

OPERATING YOUR THERMOSTAT

CHECKING THE CURRENT

TEMPERATURE SETTING

Press a single key to compare current room temperature to the current temperature setting at any time.

PRESENT

SETTING

Press and release. The display will show the current temperature setting for several seconds, then revert to the room temperature.

During recovery from energy savings, the setting displayed will not match the programmed setting. This is because the thermostat gradually changes the temperature setting during recovery to provide most efficient use of the heating or cooling equipment.

ON HEAT

SET

M5057

MAINTAINING YOUR THERMOSTAT

REMOVING THE THERMOSTAT

1 Loosen the two captive screws at the bottom corners of the case.

2 Pull out the thermostat from the bottom.

3 Lift the thermostat up and off the subbase.

MON

MORNIMG

ROOM

HEAT ON

SYSTEM

SET

PRESENT

DAY/TIME DAY

SET

HEAT/COOL

WAKE

PERIOD

LEAVE

SLEEP RETURN

TIME

AHEAD

TEMPERATURE

PRESENT

SETTING

WARMER

BACK COOLER

SKIP

PERIOD

CHANGE

PERIOD

M3758

HEAT

AUTO

COOL OFF

AUTO

FAN

M3760

HEAT AUTO

COOL

OFF

ON AUTO

FAN

M3761

REPLACING THE THERMOSTAT

1 Hang the thermostat on the tabs at the top of the subbase.

2 Swing down and press on the lower edge until the thermostat snaps into place.

3 Tighten the captive screws.

MON

RETURN

HEAT ON

SYSTEM

HEAT

AUTO

COOL OFF

ON AUT

FAN

M3759

AUTO

MON

MORNIMG

ROOM

HEAT ON

SYSTEM

SET

PRESENT

DAY/TIME

HOLD

TEMP

DAY

SET

HEAT/COOL

WAKE

PERIOD

LEAVE

SLEEP RETURN

TIME

AHEAD

BACK

TEMPERATURE

PRESENT

SETTING

WARMER

COOLER

SKIP

PERIOD

CHANGE

PERIOD

M3756

M3757

MAINTAINING YOUR

THERMOSTAT

MAINTAINING YOUR THERMOSTAT

REPLACING THE BATTERIES

Your thermostat uses three AAA alkaline batteries. We recommend

Energizer

batteries. The display will flash REPL BAT when the batteries get low. Unless the display is blank

(indicating the batteries are dead) when you start, you will not have to reprogram the thermostat if you insert the new batteries within 20-30 seconds of taking out the old ones.

To replace:

■

Set the system switch to OFF.

■

Remove the thermostat from the wall. See page 31.

■

Lift the batteries out of the holder.

■

Insert the new batteries, making sure the positive (+) terminals all face toward the right.

■

Replace the thermostat on the wall. See page 32.

■

Reprogram, if necessary.

M1915

POWER OUTAGES

Backup batteries will hold the programming and keep the display on during most power outages. Once the power is restored, the system will resume normal operation.

If the display goes off when power is lost, either the backup batteries need to be replaced or are not installed.

When power is restored, the display will flash 1:00 PM to remind you to reprogram.

Adaptive Intelligent Recovery™

See pages 1-4.

Comfort temperature

The temperature you want in the morning and evening when you’re home.

Energy-saving temperature

The lower (heating) or higher

(cooling) temperature that lets you save on heating and cooling costs when you’re asleep or away. Also called the setback (heating) or setup

(cooling) temperature.

Period key

One of the four keys—WAKE,

LEAVE, RETURN or SLEEP—that you press to check or program the start time and temperature for a time period.

GLOSSARY

Preprogrammed schedule

This is the schedule programmed into your thermostat at the factory. It sets a night program that provides energy savings if you don’t set your own program, or if your personal program is lost for any reason. The program, which is the same for all days of the week, is:

Period

WAKE

LEAVE

RETURN

SLEEP

Start Temperature

Time Heating

6:00 AM 70

Cooling

--------- No program -------------------------

10:00 PM 60

F 78

Program

The times and temperatures you set to define the comfort and energy savings periods for each schedule

(weekdays, Saturday, Sunday).

Recovery

The time when the thermostat operates the heating or cooling equipment to return the house from the energy savings temperature to the comfort temperature. The thermostat starts the recovery period early so the house will be at the comfort setting by the time you’ve chosen.

Saturday program schedule

The schedule of WAKE, LEAVE,

RETURN and SLEEP period start times and temperatures that you program to run on Saturdays.

Setback

Reducing the temperature in the house for a set period every day in winter for energy savings. The lower temperature is the energy savings temperature.

Setup

Raising the temperature in the house for a set period every day in summer for energy savings. The higher temperature is the energy savings temperature.

Set point

The temperature you set on the thermostat. The thermostat turns the heating or cooling equipment on and off to maintain this temperature at the thermostat location until another temperature setting goes into effect.

Sunday program schedule

The schedule of WAKE, LEAVE,

RETURN and SLEEP period start times and temperatures that you program to run on Sundays.

GLOSSARY

SYSTEM light (yellow)

This light (located on thermostat) glows whenever the thermostat is calling for heating or cooling.

Time period

One of four program periods:

WAKE, LEAVE, RETURN and

SLEEP available with the thermostat. One period begins when the previous period ends.

WAKE—The time period when you want the house at a comfortable temperature while the family gets up and gets ready to leave for work or school. This is the only period that must contain a time and temperature.

LEAVE—The time period when you can set back (winter) or set up (summer) the temperature for energy savings because the family is usually away from home.

RETURN—The time period when you want the house at a comfortable temperature for family activities in the evening before bedtime.

SLEEP—The time period when you can set back (winter) or set up (summer) the temperature for energy savings because the family is sleeping. Set it to start at your family’s normal bedtime.

Often the SLEEP program is set only for the heating season so family members can sleep cool in summer.

Weekday program schedule

The schedule of WAKE, LEAVE,

RETURN and SLEEP period start times and temperatures that you program to run Monday through

Friday.

YOUR PERSONAL PROGRAM

You can use the tables below to plan your schedule before you begin programming. If you choose not to program a daytime energy savings period, leave the LEAVE and RETURN periods blank.

START

TIME

Weekday Program

HEATING

TEMPERATURE

COOLING

TEMPERATURE PERIOD

WAKE

LEAVE

RETURN

SLEEP

START

TIME

Saturday Program

HEATING

TEMPERATURE

COOLING

TEMPERATURE PERIOD

WAKE

LEAVE

RETURN

SLEEP

PERIOD

WAKE

LEAVE

RETURN

SLEEP

START

TIME

Sunday Program

HEATING

TEMPERATURE

COOLING

TEMPERATURE

YOUR PERSONAL

PROGRAM

TROUBLESHOOTING GUIDE

IF…

Display will not come on.

Display flashes during programming.

Display flashes during operation.

Program is lost due to power outage.

Temperature change occurs at the wrong times.

THEN…

■

Check that heat or cool system power is on. If you use batteries, replace with fresh ones.

■

Make sure thermostat is correctly mounted on the subbase.

■

You have reached the temperature setting limit. The setting range is 45

F to 88

F. In models with automatic heat-cool changeover, the COOL temperature setting must be at least 3

F above the HEAT temperature setting.

■

Programming has been lost because of a power outage. You must reprogram.

■

Check that backup batteries are installed correctly. Replace when necessary. Reprogram the thermostat.

■

Check the program times for the period in question. Be sure that AM and PM indications are correct. Make sure the current day and time are correct. Reprogram when necessary.

■

Remember that the heating system or cooling system comes on before the WAKE and RETURN start times so the house will be at the desired temperature when the period starts.

Heating will not come on.

Heating will not come on. (con't)

Cooling will not come on.

The house is too warm or too cool.

Display says HEAT ON or SYSTEM light is on, but no heat is coming from the registers.

Display flashes REPL BAT or goes blank when power is turned off.

■

Check the fuse or circuit breaker and replace or reset when necessary.

■

Check that the switch on the thermostat is set to HEAT or AUTO.

■

If temperature setting is higher than current temperature, and display says HEAT ON or SYSTEM light is on, contact your heating and air conditioning contractor.

■

Check the fuse or circuit breaker and replace or reset when necessary.

■

Check that switch on thermostat is set to COOL or AUTO.

■

The thermostat has a built-in time delay, which may add to time delays in the cooling equipment. Allow up to ten minutes after changing the setting before the compressor starts.

■

If temperature setting is lower than current temperature, and display says COOL ON or SYSTEM light is on, contact your heating and air conditioning contractor.

■

Press PRESENT SETTING to check the current temperature setting.

■

If desired, change the time or temperature setting. See page 25.

■

Allow time for the heating equipment to heat up before checking for

■ heat at the register.

Install fresh AAA alkaline batteries. We recommend Energizer batteries. (See page 33.)

TROUBLESHOOTING

GUIDE

CHRONOTHERM III THERMOSTAT QUESTIONS

The temperature displayed on the Chronotherm III Thermostat doesn’t always match the room temperature on another thermostat located right next to it. Why?

Can I control when the furnace comes on in the morning?

First, the Chronotherm III Thermostat is a very accurate instrument designed to sense both air temperature and wall temperature, like your body does. It gives an average reading over a period of time. Second, it is self-adjusting, and will take a few days after installation to adapt to your home.

What does the HOLD key do?

With Adaptive Intelligent Recovery™, the thermostat will turn on the furnace as early as necessary to reach your desired comfort temperature at the programmed time. The earliest it will be is 24 minutes per degree setback ahead of your WAKE time, but it will vary depending on your system, the weather and how much the temperature dropped in your house during the night.

If it is so cold outside that your house drops to your sleep temperature, the furnace will turn on and off at night to control the temperature at that setting.

It bypasses all program settings and holds the temperature at the present setting. To increase or decrease the temperature while on HOLD, use the

WARMER-COOLER keys. Touching RUN PROGRAM will return the device to programmed operations.

How long does the HOLD key hold?

How can this thermostat save energy when it comes on and off so many times early in the morning hours?

Why don’t all thermostat models have AUTO (automatic) changeover from heating to cooling?

Sometimes my Chronotherm

III Thermostat doesn’t allow the house temperature to drop to my SLEEP setting before it starts bringing the furnace on. Why?

Forever! The HOLD key will hold the temperature indefinitely. The only way to release it is to push the RUN PROGRAM key or change the system switch positions if applicable.

Two ways. First, it saves energy (and money) by setting back the temperature for blocks of time during the day or night. Second, it conserves energy by recovering gradually to the desired temperature. This prevents overshooting your comfort set point (and wasting energy) or undershooting the comfort set point (and forcing you to change the thermostat setting, also wasting energy).

Most parts of the country don’t have wide temperature swings during a 24-hour period, so it is not necessary. Desert climates, such as Phoenix, are the exception because of wide variations in temperature that may require both the air conditioner and furnace to run during different times within a given 24-hour period.

When you start your SLEEP period, the thermostat will turn off your furnace and your house temperature will start to fall. After that, the thermostat does nothing until the house temperature falls all the way to your SLEEP temperature setting or until recovery starts.

In mild weather or with good insulation, your house temperature may not fall all the way to your SLEEP temperature setting and the thermostat won’t turn on your furnace until the time to recover back up to your comfort setting.

CHRONOTHERM III

THERMOSTAT QUESTIONS

Press these keys to:

QUICK REFERENCE TO THE KEYS

SET

PR ESENT

DAY/TIME

Begin the current day or time programming.

WAKE

SLEEP

DAY

LEAVE

RETURN

Set the day of the week and select the program day during programming.

Select the time period to program or review.

SET

HEAT/COOL

AHEAD

BACK

Switch between heat and cool modes during programming or when reviewing the program.

Set the time ahead and back.

Hold either key down to change the setting faster.

WARMER

COOLER

HOLD

TEMP

CHANGE

TO LAST

PERIOD

SKIP

NEXT

PERIOD

RUN

PROGRAM

PRESENT

SETTING

Set the temperature while programming and temporarily change the temperature during operation. Hold down either key to change the setting faster.

Hold any temperature you desire for an extended period.

Change the temperature to the set point of the previous period.

Maintain the current temperature through the next program period.

Start your programmed schedule; cancel temporary program changes.

See the current temperature setting. Setting may not match programmed setting during recovery from energy savings.

QUICK REFERENCE TO

THE KEYS

Batteries, replacement ............... 33

Blinking display ........................... 39

Canceling programs ................... 27

Change temperature ................... 23

Checking present setting ............ 29

Checking programs .................... 28

Clock display ............................... *5

Cooling temperatures ................. 14

Day ................................................ 6

Display ........................................ *6

Energy-saving temperature ........ 35

Fan switch ................................... 20

Features ........................................ *

Flashing display .......................... 39

Glossary ...................................... 35

INDEX

Heating temperatures ................... 7

Hold temperature .................. 26, 41

Keys ............................................ 43

LEAVE ........................................ 36

Light .......................................... *36

Maintenance ............................... 31

Manual operation ........................ 26

Operation .................................... 23

Period keys ................................. 43

Personal program ....................... 37

Power outage .............................. 34

Preprogrammed schedule .......... 35

Present setting ............................ 26

Program schedule ...................... 27

Programming overview ................. *

Programming steps ...................... 6

Quick reference to the keys ........ 43

RETURN ............................... 36, 43

Removing thermostat ................. 31

Replacing batteries ..................... 33

Replacing thermostat .................. 32

SLEEP ................................... 30,35

Saturday program .......... 12, 35, 37

Set cooling temperatures ........... 14

Set current day ............................. 6

Set current time ............................ 6

Set fan switch ............................. 20

Set heating temperatures ............. 7

Set program schedule .................. 7

Set system switch ....................... 21

Setback ....................................... 35

Setting limits ............................ 8,10

Setup ........................................... 36

Skip ............................................. 23

Sunday program ...... 13, 18, 36, 38

Switch, fan .................................. 20

Switch, system ............................ 21

System light ................................ 35

System switch ............................. 21

Table of Contents .......................... i

Temporary program changes ..... 23

Time .............................................. 6

Time period ................................. 36

Troubleshooting .......................... 39

WAKE ................................... 36, 43

Weekday program ..... 7, 14, 36, 37

*See the product features inside the front cover.

INDEX

LIMITED ONE-YEAR WARRANTY

Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at

Honeywell’s option) within a reasonable period of time.

If the product is defective,

(i) return it with a bill of sale or other dated proof of purchase, to the dealer or contractor from which you purchased it, or

(ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of the malfunction, and mail it, postage prepaid, to the following address:

Honeywell Inc.

Return Goods Department

1050 Berkshire Lane

Plymouth, MN 55441-4401

This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer.

Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR ANY LOSS OR

DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY

WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.

THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING

THE WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONE YEAR DURATION OF THIS

WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

If you have any questions concerning this warranty, please write our Customer Assistance Center, Honeywell Inc., P.O. Box 524, MN27-2164, Minneapolis, MN 55440-

0524 or call toll-free at 1-800-468-1502, Monday-Friday, 7:00 a.m. - 5:30 p.m. Central time.

LIMITED ONE-YEAR

WARRANTY

Monitor thermostat operation, read current time and room temperature at a glance.

Set different schedules for weekdays,

Saturday, and

Sunday.