Page 1
OWNER'S
MANUAL
How to operate your new Pr ogr ammable Thermostat
Page 2
Congratulations! You made a smart choice when you purchased your new programmable thermostat.
It’s the smart thermostat that:
■
Keeps you comfortable
by automatically calculating exactly when the furnace or air conditioning
should go on to have the house at the desired comfort temperature at the time you want.
■
Saves the maximum amount of energy and money
by remembering to automatically set back the
heat or air conditioning when you leave home or sleep.
■
Provides the ultimate in comfort and convenience
. It comes already programmed, so it’s your
choice—use the pre-programmed schedule or set your own.
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Page 4
TABLE OF CONTENTS
Programmed Recovery......................................... 1-4
Recovery Setting................................................... 5-6
Programming Your Thermostat ......................... 7-22
Set the current day and time ..................................7
Set the program schedule and
heating temperatures........................................8
Set the cooling temperatures,
if you have air conditioning .............................. 15
Set the system and fan switches,
if your thermostat has them ............................. 21
Operating Your Thermostat ............................. 23-29
Temporarily changing the program ...................... 23
Permanently changing the program .....................25
Operating the thermostat manually ......................26
Canceling 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............................................................. 35-37
Your Personal Program .................................... 39-40
Troubleshooting Guide..................................... 41-42
Typical Questions ............................................. 43-46
Typical Energy Savings..........................................47
Quick Reference to the Keys ........................... 49-50
Index................................................................... 51-52
i
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PROGRAMMED RECOVERY
PROGRAMMED RECOVERY—
BREAKTHROUGH TECHNOLOGY
SENSES TEMPERATURE
MORE LIKE YOU DO
M168
1
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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 room, but also from your surroundings—walls,
windows and furnishings.
■
Human beings feel differences
in temperature as slight as one
degree Celsius.
■
Common household thermometers and standard thermostats
sense
only air temperature, which may or may not reflect how hot or cold
the room actually
■
Your new thermostat
feels
to a human being.
reads the temperature of the wall as well as the
air—and responds to temperature changes as little as one-half
degree Celsius—so room temperature is more likely to “feel right” to
you and your family.
PROGRAMMED RECOVERY
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PROGRAMMED RECOVERY
THE OPTIMUM COMFORT AND
ENERGY SAVINGS SOLUTION
System Operating
in Comfort Mode
REPL
AM
BAT
PM
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED
REPL
AM
SET
PT
BAT
PM
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED
Recovery Begins
REPL
AM
BAT
PM
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
TEMPERATURE
System Operating
in Energy Saving Mode
AM
PM
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED
ENERGY
SAVINGS
PERIOD
THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY
TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON.
■
This thermostat is actually a small but powerful computer
WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED
REPL
SET
PT
BAT
RECOVERY FROM ENERGY SAVINGS
TIME
SET
PT
Recovery Continues
COMFORT
PERIOD
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.
SET
PT
M467A
. When
3
Page 8
■
During Programmed 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. On some
models, both the SYSTEM and ENRG SAV lights may be lit at the
same time during recovery.
■
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.
■
With this thermostat you can choose
whether you want to use
Programmed Recovery or conventional recovery. Use Programmed
Recovery if you want to choose the exact time that the room
reaches your
comfort
temperature. Use conventional recovery if you
prefer to choose the exact time your furnace or air conditioner
comes on
to start recovery.
4
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RECOVERY SETTING
RECOVERY
SELECTION
ADAPTIVE
INTELLIGENT
CONVENTIONAL
TM
3A
IN
(FACTORY SETTING)
OUT 1/2 TO 1 TURN
3A
M2120C
Your thermostat includes a screw on the back marked “3A”, allowing
for the Programmed Recovery/conventional recovery choice.
Your thermostat was shipped from the factory with the screw positioned for Programmed Recovery. Your installer may have left the
screw in this position, or may have changed it to conventional
recovery. Before programming, you must know for which recovery
method your thermostat has been set.
• With Programmed Recovery, the dwelling will reach the comfort
temperature at the exact time you have programmed into the
thermostat. See pages 1-4 for detailed explanation of Programmed
Recovery.
• With conventional recovery, the programmed time will mark the start
of recovery; therefore, you should program the start time to be
earlier than the desired comfort 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.
5
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RUN
PROGRAM
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 32).
Press key. Check thermostat display.
WAKE
MON
AM
INDICATES
THERMOSTAT IS SET
FOR CONVENTIONAL
RECOVERY
• If the ■ shows in the lower right-hand corner (see illustration), the
thermostat is set for conventional recovery. If you would rather have
Programmed Recovery, remove thermostat from wallplate, turn
screw 3A (on back of thermostat) clockwise until it bottoms. DO
NOT OVERTIGHTEN.
• If the ■ does not show, the thermostat is set for Programmed
Recovery. If you would rather have conventional recovery, remove
thermostat from wallplate, turn screw 3A (on back of thermostat)
out 1/2 to 1 turn.
RECOVERY SETTING
6
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PROGRAMMING Y OUR THERMOST AT
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
PRESENT
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.
PM
MON
PM
TUE
PM
TUE
7
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IMPORTANT
Before you begin STEP 2, determine if your thermostat is set for Programmed Recovery or conventional recovery. See pages 5-6.
If set for Programmed Recovery, program the times for when you want your home comfortable. The thermostat
will decide how early to begin the temperature changes.
If set for conventional recovery, program the times earlier, allowing your home to reach the comfort temperature
by the time you get home or wake up. Some trial and error may be required to arrive at the best starting times.
The schedule form on page 39 provides an opportunity to plan your schedule.
STEP 2
SET THE PROGRAM
SCHEDULE AND HEATING
TEMPERATURES
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.
WAKE
SET
HEAT/COOL
Press and release. Note that the
display shows WAKE and the
preprogrammed time and
temperature.
If you have air conditioning and
the display reads COOL, press
and release to switch to HEAT.
PROGRAMMING YOUR
AM
MON TUE WED THU FRI HEAT
WAKE
AM
MON TUE WED THU FRI HEAT
WAKE
SET
PT
SET
PT
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PROGRAMMING Y OUR THERMOST AT
NOTE: The display shows
Programmed Recovery setting in
the following instructions.
DAY
AHEAD
BACK
WARMER
COOLER
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.
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 2
AM
MON TUE WED THU FRI HEAT
WAKE
AM
MON TUE WED THU FRI HEAT
WAKE
AM
MON TUE WED THU FRI HEAT
WAKE
SET
PT
SET
PT
SET
PT
9
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degrees below the air
conditioning temperature. For
example, if the cooling setting is
24° C, the maximum heating
setting is 22° C.
MON TUE WED THU FRI HEAT
LEAVE
SET
PT
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
BACK
WARMER
COOLER
Press and release. The display
shows LEAVE, but no time or
temperature.
Press and hold until the display
shows the desired starting time.
Press and hold until the display
shows the desired temperature.
AM
MON TUE WED THU FRI HEAT
LEAVE
AM
MON TUE WED THU FRI HEAT
LEAVE
10
SET
PT
SET
PT
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PROGRAMMING Y OUR THERMOST AT
Program the RETURN time and
temperature, if desired.
RETURN
AHEAD
BACK
WARMER
COOLER
Press and release. The display
shows RETURN, but no time or
temperature.
Press and hold until the display
shows the desired starting time.
Press and hold until the display
shows the desired temperature.
MON TUE WED THU FRI HEAT
RETURN
PM
MON TUE WED THU FRI HEAT
RETURN
PM
MON TUE WED THU FRI HEAT
RETURN
11
SET
PT
SET
PT
SET
PT
Page 16
Program the SLEEP time and
temperature, if desired.
SLEEP
AHEAD
BACK
WARMER
COOLER
Press and release. The display
shows SLEEP and the preprogrammed time and temperature.
Press and hold until the display
shows the desired starting time.
Press and hold until the display
shows the desired temperature.
PM
MON TUE WED THU FRI HEAT
SLEEP
PM
MON TUE WED THU FRI HEAT
SLEEP
PM
MON TUE WED THU FRI HEAT
SLEEP
12
SET
PT
SET
PT
SET
PT
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PROGRAMMING Y OUR THERMOST AT
Set the SATURDAY schedule.
Use the same procedure as for
weekdays.
DAY
WAKE
SLEEP
AHEAD
BACK
Press and hold until SAT appears
on the display.
Press WAKE, LEAVE, RETURN
or SLEEP to select the time
period.
Use the AHEAD/BACK keys to
set the time and the WARMER/
COOLER keys to set the temperature.
LEAVE
RETURN
WARMER
COOLER
SLEEP
HEAT
SET
PT
PM
SAT
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Set the SUNDAY schedule. Use
the same procedure as for
weekdays.
DAY
Press and hold until SUN
appears on the display.
HEAT
SET
PT
SUN
PM
SLEEP
NOTE: Some models will show
-AC, indicating the thermostat is
operating on backup batteries
until the thermostat is mounted
on the wallplate and the system
is powered.
WAKE
SLEEP
AHEAD
BACK
RUN
PROGRAM
Press WAKE, LEAVE, RETURN,
or SLEEP to select the time
period.
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. If you have air
conditioning, go to Step 3.
If you do not have air conditioning, press and release to start the
program. Go to Step 4.
LEAVE
RETURN
WARMER
COOLER
TUE
LEAVE
PM
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PROGRAMMING Y OUR THERMOST AT
STEP 3
SET THE COOLING
TEMPERATURES, IF YOU
HAVE AIR CONDITIONING
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.
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.
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.
AM
SUN HEAT
WAKE
AM
SUN COOL
WAKE
AM
MON TUE WED THU FRI COOL
WAKE
15
SET
PT
SET
PT
SET
PT
Page 20
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 2 degrees higher
than the corresponding heating
temperature. For example, if the
heating setting is 21° C, the
minimum cooling setting is 23° C.
If you desire a lower cooling
setting, the heating setting must
first be lowered accordingly.
AM
MON TUE WED THU FRI COOL
WAKE
16
SET
PT
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PROGRAMMING Y OUR THERMOST AT
Program the LEAVE
temperature, if desired.
Program the RETURN
temperature, if desired.
LEAVE
WARMER
COOLER
RETURN
WARMER
COOLER
Press and release. The display
shows LEAVE, the time programmed for heating, and 26° C.
Press and hold until the display
shows the desired temperature.
Press and release. The display
shows RETURN, the time
programmed for heating, and
26° C.
Press and hold until the display
shows the desired temperature.
AM
MON TUE WED THU FRI COOL
LEAVE
AM
MON TUE WED THU FRI COOL
LEAVE
MON TUE WED THU FRI COOL
MON TUE WED THU FRI COOL
PM
RETURN
PM
RETURN
17
SET
PT
SET
PT
SET
PT
SET
PT
Page 22
Program the SLEEP
temperature, if desired.
SLEEP
Press and release.
PM
MON TUE WED THU FRI COOL
SLEEP
SET
PT
Set the cooling temperatures for
the SATURDAY schedule. Use
the same procedure as for
weekdays.
WARMER
COOLER
DAY
WAKE
SLEEP
Press and hold until the display
shows the desired temperature.
Press and hold until SAT appears
on the display.
Press WAKE, LEAVE, RETURN
or SLEEP to select the time
period.
PM
MON TUE WED THU FRI COOL
SLEEP
PM
SLEEP
LEAVE
RETURN
SAT COOL
18
SET
PT
SET
PT
Page 23
PROGRAMMING Y OUR THERMOST AT
Set the cooling temperatures for
the SUNDAY schedule. Use the
same procedure as for
weekdays.
WARMER
COOLER
DAY
WAKE
SLEEP
Use the WARMER/COOLER
keys to set the temperature.
Press and hold until SUN
appears on the display.
Press WAKE, LEAVE, RETURN
or SLEEP to select the time
period.
SUN COOL
RETURN
PM
SLEEP
LEAVE
19
SET
PT
Page 24
WARMER
COOLER
Use the WARMER/COOLER
keys to set the temperature.
You have completed programming the cooling temperatures.
NOTE: Some models will show
-AC, indicating the thermostat is
operating on backup batteries
until the thermostat is mounted
on the wallplate and the system
is powered.
RUN
PROGRAM
Press and release to start the
program.
Go to Step 4.
LEAVE
PM
TUE
20
Page 25
PROGRAMMING Y OUR THERMOST AT
STEP 4
SET THE SYSTEM AND FAN
SWITCHES, IF YOUR THERMOSTAT HAS THEM.
Depending on thermostat model,
some or all of the switch positions
shown may be available to you.
Note the positions provided on your
thermostat, 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.
FAN
FAN
AUTOON
AUTOON
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Then set the system switch. HEAT: The thermostat controls your
heating system.
HEAT OFF COOL AUTO
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.
COOL: The thermostat controls
your air conditioning system.
AUTO: The thermostat controls
either your heating or air conditioning system, depending on room
temperature.
You have finished programming
your thermostat.
If you removed it from the wall to
program, replace it following the
procedure on page 32.
HEAT OFF COOL AUTO
HEAT OFF COOL AUTO
HEAT OFF COOL AUTO
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OPERATING Y OUR THERMOST AT
TEMPORARILY CHANGING
THE PROGRAM
These features let you customtailor 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:
To go back to the temperature of
the previous program period:
SKIP
NEXT
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.
PM
TUE
LEAVE RETURN
PM
TUE
WAKE TEMPORARY
23
SET
PT
SET
PT
Page 28
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.
TEMPORARY
HEAT
SET
PT
If you change your mind: Press and release to
RUN
PROGRAM
cancel any of the temporary settings.
TUE
LEAVE
OPERATION
PM
SET
PT
24
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OPERATING Y OUR THERMOST AT
PERMANENTLY CHANGING
THE PROGRAM
If your schedule changes or you
want a different temperature,
you can update any setting
without affecting the rest of the
WAKE
SLEEP
DAY
AHEAD
BACK
RUN
PROGRAM
program.
Press and release the desired
period key.
Press and hold until the desired
schedule day shows on the
display.
Press and hold the Time or
Temperature keys until the
display shows the desired new
program.
Press and release to return to
normal operation.
LEAVE
RETURN
WARMER
COOLER
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OPERATING THE
THERMOSTAT MANUALLY
This feature is particularly useful
when you go on vacation or
HOLD
TEMP
WARMER
COOLER
TEMPERATURE
PRESENT
SETTING
RUN
PROGRAM
other extended absence. It does
not cancel your program.
Press and release.
Press and hold to change the
temperature setting. After a few
seconds the display will show the
current temperature.
Press and release to check the
temperature setting.
Press and release to cancel
manual control.
HEAT
HEAT
HEAT
SET
PT
SET
PT
SET
PT
NOTE: Moving the system switch
also cancels hold.
LEAVE
PM
TUE
SET
PT
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OPERATING Y OUR THERMOST AT
CANCELING 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
RUN
PROGRAM
Press and hold the desired period
key until the time and temperature clear from the display (about
3 seconds).
Press and release to return to
normal operation.
MON TUE WED THU FRI HEAT
LEAVE
PM
MON TUE WED THU FRI
RETURN
27
SET
PT
Page 32
CHECKING THE PROGRAM
TIMES AND TEMPERATURES
WAKE
You can check all the stored
settings without affecting the
permanent program.
SLEEP
LEAVE
RETURN
DAY
RUN
PROGRAM
Press and release the desired
period key. The start time and
temperature setting will appear
on the display.
Press and release to display the
next daily time and temperature
for that period.
Press and release to return to
normal operation.
PM
MON TUE WED THU FRI ON HEAT
SLEEP
PM
SAT HEAT
SLEEP
PM
MON TUE WED THU FRI
RETURN
28
SET
PT
SET
PT
SET
PT
Page 33
OPERATING Y OUR THERMOST AT
CHECKING THE CURRENT
TEMPERATURE SETTING
Press a single key to compare
current room temperature to the
settings at any time.
TEMPERATURE
PRESENT
SETTING
Press and release. The display
will show the current temperature
setting for several seconds, then
revert to the room temperature.
Applicable if thermostat is set for
Programmed Recovery: 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.
HEAT
29
SET
PT
Page 34
30
Page 35
REMOVING THE THERMOSTAT
1 Loosen the two captive screws
at the bottom corners of the
case.
2 Pull the thermostat out from the
3 Lift the thermostat UD and off the
bottom.
base.
31
Page 36
REPLACING THE THERMOSTAT
2 Swing down and press on
1 Hang the thermostat on the tabs at
lower edge until thermo-
the t6p of the base.
stat snaps in place.
3 Tighten the captive screws.
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MAINTAINING Y OUR THERMOST AT
REPLACING THE BATTERIES
Your thermostat uses three AA or
AAA alkaline batteries, depending
on model. See the instructions
inside the thermostat door to
determine the size. 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 won’t have to reprogram the
thermostat if you can insert the
new batteries within 20-30 seconds
of taking out the old ones.
To replace:
■
If your thermostat has a system
switch, set it 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.
M468
33
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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.
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Page 39
GLOSSARY
Comfort temperature
The temperature you want in the
morning and evening when you’re
home.
Conventional Recovery
Recovery starts at the time
programmed into the thermostat;
house reaches comfort temperature shortly thereafter.
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.
Program
The times and temperatures you
set to define the comfort and
energy savings periods for each
schedule (weekdays, Saturday,
Sunday).
Programmed Recovery
Recovery automatically starts early
enough so your house is at the
comfort setting by the time you’ve
chosen.
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.
Setup
Raising the temperature in the
house for a set period every day in
summer for energy savings. The
higher temperature is the energy
saving temperature.
35
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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.
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 Time Heating Cooling
WAKE 6:00 AM 21° C26° C
LEAVE - - - - - - No program - - - - - - - RETURN - - - - - - No program - - - - - - - SLEEP 10:00 PM 16° C26° C
Start Temperature
Recovery
The time when the thermostat
operates the heating or air
conditioning equipment to return
the house from the energy savings
to the comfort temperature. If
thermostat is set for Programmed
Recovery, 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.
Status lights—Lights on some
models that show system operating
mode.
ENRG SAV light—This light
glows during the LEAVE and
SLEEP periods.
SYSTEM light—This light glows
whenever the thermostat is
calling for heating or air
conditioning.
Sunday program schedule
The schedule of WAKE, LEAVE,
RETURN and SLEEP period start
times and temperatures that you
program to run on Sundays.
GLOSSARY
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GLOSSARY
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—For conventional
recovery, the time the recovery
to the comfortable temperature
begins; for Programmed
Recovery, 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 up
(summer) the temperature for
energy savings because the
family is usually away from
home.
RETURN—For conventional
recovery, the time the recovery
to the comfortable temperature
begins; for Programmed
Recovery, 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 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.
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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.
Weekday Program
START HEATING COOLING
PERIOD TIME TEMPERATURE TEMPERATURE
WAKE
LEAVE
RETURN
SLEEP
Saturday Program
START HEATING COOLING
PERIOD TIME TEMPERATURE TEMPERATURE
WAKE
LEAVE
RETURN
SLEEP
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Sunday Program
START HEATING COOLING
PERIOD TIME TEMPERATURE TEMPERATURE
WAKE
LEAVE
RETURN
SLEEP
YOUR PERSONAL
PROGRAM
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TROUBLESHOOTING GUIDE
IF… THEN…
Display will not come on.
■
Check that heat or cool system power is on. If you use batteries,
replace with fresh ones.
■
Make sure thermostat is correctly mounted on base.
■
Display flashes during programming.
You have reached the temperature setting limit. The setting range is
7° C to 31° C. In models with automatic heat-cool changeover, the
COOL temperature setting must be at least 2° C above the HEAT
temperature setting.
■
Display flashes during operation.
Programming has been lost because of a power outage. You must
reprogram.
■
Program is lost due to power outage.
Check that backup batteries are installed correctly. Replace if
necessary. Reprogram the thermostat.
Temperature change occurs
■
Check the program times for the period in question.
at the wrong times. Be sure that AM and PM indications are correct. Make sure the
current day and time are correct. Reprogram if necessary.
■
If using Programmed Recovery, remember that the furnace or air
conditioner comes on before the WAKE and RETURN start times so
the house will be at the desired temperature when the period starts.
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Heating will not come one.
■
Check the fuse or circuit breaker and replace or reset if necessary. If
display is blank or says REPL BAT, install fresh batteries.
■
Check that switch on thermostat is set to HEAT or AUTO.
■
If temperature setting is higher than current temperature, and display
says HEAT ON, contact your heating and air conditioning contractor.
Cooling will not come on.
■
Check the fuse or circuit breaker and replace or reset if necessary. If
display is blank or says REPL BAT, install fresh batteries.
■
Check that switch on thermostat is set to COOL or AUTO.
■
The thermostat has a built-in time delay on cooling to protect the
compressor. Allow up to 10 minutes after changing the setting before
the air conditioner starts.
■
If temperature setting is lower than current temperature, and display
says COOL ON, contact your heating and air conditioning contractor.
■
The house is too warm or too cool.
Display says HEAT ON or system
Press PRESENT SETTING to check the current temperature setting.
■
If desired, change the time or temperature setting. See page 25.
■
Allow time for the furnace to heat up and the fan to come on
light is on, but no heat is coming before checking for heat at the register.
from the registers.
TROUBLESHOOTING
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TYPICAL QUESTIONS
1. Why do some models of this
thermostat have lights?
2. The temperature displayed on
the thermostat doesn’t always
match the room temperature on
another thermostat located right
next to it. Why?
3. Can I control when the furnace
comes on in the morning?
Battery-operated thermostats do not have indicator lights to conserve
battery power. Others may have one or two indicator lights, depending
upon the exact model and application.
very
First, the thermostat is a
both air temperature and wall temperature, much as your body does. It
gives an
adjusting, and will take a few days after installation to adapt to your
home.
When the thermostat is set for Programmed Recovery, it 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 43 minutes per
Celsius 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 at night.
If you want to control the start time yourself, just switch the thermostat
to conventional recovery following the directions on page 6. This way,
the furnace won’t come on until your programmed WAKE time, but of
course it will take a little while for your house to heat up to the comfort
temperature.
average
reading over a period of time. Second, it is self-
accurate instrument designed to sense
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Remember, whichever way you set your thermostat, 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.
4. What does the HOLD key do? It bypasses
5. How long does the HOLD key
hold?
6. How can this thermostat save
energy when it comes on and off
so many times early in the morning hours?
QUESTIONS
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.
Forever! The HOLD button will hold the temperature indefinitely. The
only way to release it is to push the RUN PROGRAM button or change
the system switch positions if applicable. For a
change, simply press WARMER or COOLER key. This temporary
setting will last until the next scheduled program begins.
Two ways. First, it
temperature for
conserves
This prevents
or
undershooting
thermostat setting, also wasting energy).
all
program settings and
holds
the temperature at the
temporary
saves
energy (and money) by setting back the
blocks
energy by
overshooting
of time during the day or night. Second, it
recovering gradually
your comfort set point (and wasting energy)
the comfort set point (and forcing you to change the
to the desired temperature.
temperature
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TYPICAL QUESTIONS
7. My thermostat has ENRG SAV
and SYSTEM lights. Why do they
both go on at the same time?
(For example: during the sleep
period.)
8. Why don’t all thermostat
models have AUTO (automatic)
changeover from heating to
cooling?
9. Sometimes my thermostat
doesn’t allow the house temperature to drop to my SLEEP
setting before it starts bringing
the furnace on. Why?
During Programmed Recovery, when you recover
point, you will stay in the energy-saving mode until the next programmed
time is reached. But the system will operate intermittently to
raise the temperature to your desired comfort level before the time you’ve
set as your WAKE time. You will always be saving energy until the next
period’s
Most parts of the country don’t have wide temperature swings during a
24-hour period, so it is not necessary.
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 is out of the picture 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.
actual
set point is reached.
gradually
to a next set
gradually
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TYPICAL ENERGY SAVINGS
Approximate
percentage of
energy cost
savings*
% Winter Savings
Twice-A-Day, 5°C
decrease
% Summer Savings
Once-A-Day, 3°C
increase
% Winter Savings
Once-A-Day, 5°C
decrease
*Actual savings depend on your
home, geographic location,
number of energy saving
periods and number of degrees
increased or decreased.
M 466
22
20
18
16
14
12
10
8
6
4
2%
Edmonton
Vancouver
Calgary
Regina
Winnipeg
North Bay
London
Toronto
Ottawa
Montreal
Quebec
Moncton
Halifax
St. John's
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QUICK REFERENCE TO THE KEYS
Press these keys to:
WAKE
SET
PRESENT
DAY/TIME
DAY
LEAVE
RETURNSLEEP
SET
HEAT/COOL
AHEAD
BACK
Begin the current day or time programming.
Set the day of the week and select the
program day during programming.
Select the time period to program or
review. Comfort times depend on
selection of Programmed Recovery or
conventional recovery.
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.
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WARMER
COOLER
Set the temperature while programming
and temporarily change the temperature
during operation. Hold either key down to
change the setting faster.
HOLD
TEMP
CHANGE
TO LAST
PERIOD
SKIP
NEXT
PERIOD
RUN
PROGRAM
TEMPERATURE
PRESENT
SETTING
REFERENCE TO
KEYS
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.
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INDEX
Automatic Changeover.......... 9, 16
Batteries, replacement .............. 33
Blinking display ......................... 41
Canceling programs .................. 27
Change temperature ................. 25
Checking present
setting................................... 29
Checking programs ................... 28
Clock display ............................ *, 7
Conventional Recovery ............... 5
Cooling temperatures................ 15
Day.............................................. 7
Display ..................................... *, 7
Lights...................................... *, 36
Maintenance.............................. 31
Manual operation ...................... 26
Operation .................................. 23
Period keys ............................... 36
Personal program...................... 39
Power outage ............................ 34
Preprogrammed
schedule ............................... 36
Present setting .......................... 29
Program schedule ..................... 39
Programmed recovery................. 1
Programming overview ................ *
Set fan switch............................ 21
Set heating
temperatures .......................... 8
Set program schedule ................. 8
Set system switch ..................... 22
Setback ..................................... 36
Setting limits.......................... 9, 16
Setup......................................... 35
Skip ........................................... 23
Sunday program............ 14, 19, 36
Switch, fan................................. 21
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Energy Savings,
Typical .................................. 46
Energy-saving
temperature .......................... 35
ENRG SAV light ........................ 36
Fan switch ................................. 21
Features ....................................... *
Flashing display ........................ 41
Glossary .................................... 35
Heating temperatures.................. 8
Hold temperature ...................... 26
Keys .......................................... 47
Programming steps ..................... 7
Quick reference to
the keys ................................ 47
RETURN ............................. 37, 47
Removing thermostat ................ 31
Replacing batteries ................... 33
SLEEP................................. 37, 47
Saturday program ......... 13, 18, 36
Set cooling
temperatures ........................ 15
Set current day............................ 7
Set current time........................... 7
Switch, system .......................... 22
SYSTEM light............................ 36
System switch ........................... 22
Table of Contents..........................i
Temporary program
Time ............................................ 7
Time period ............................... 37
Troubleshooting ........................ 41
WAKE.................................. 37, 47
Weekday program........... 8, 15, 37
LEAVE................................. 37, 47
*See the product features inside the front cover.
This equipment is a Class B digital apparatus which complies with Canadian Radio Interference Regulations, CRC c. 1374.
changes................................ 23
INDEX
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53
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S.M.
Rev. 1-90 Printed in Taiwan R.O.C. Form Number 69-0378—1
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