Bryant Programmable Thermidistat User manual

Programmable
Thermidistat™
Control
Homeowner’s
Guide
Easy-To-Use, Trusted
Comfort.
Congratulations! As the owner
of a new Thermidistat
™
Control,
you have made a commitment to
enjoying enhanced home comfort.
This Thermidistat Control provides
reliable and consistent indoor
temperatures with the added
comfort of proper humidification.
Combining the brains of a computer
and the simplicity of a garage door
opener in an attractively designed
package, Bryant makes enjoying
the comfort of your home easier
than ever. Just follow the instruc-
tions in this guide, then relax
knowing your Thermidistat Control
is in command of your comfort.
Copyright 1997 Bryant Heating and Cooling Systems
Form: OM17-24 Replaces: OM17-16 Printed in the U.S.A. 9-98 Catalog No. 13TS-TA10
Before purchasing this appliance, please read the important energy
cost and efficiency information available from your dealer.
Manufacturer reserves the right to discontinue, or change at any time,
specifications or designs without notice and without incurring obligations.
COMFORT CONTROL
COMFORT CONTROL
7310 West Morris Street, Indianapolis, IN 46231

Programmable
Thermidistat™
Control
Homeowner’s
Guide
Easy-To-Use, Trusted
Comfort.
Congratulations! As the owner
of a new Thermidistat
™
Control,
you have made a commitment to
enjoying enhanced home comfort.
This Thermidistat Control provides
reliable and consistent indoor
temperatures with the added
comfort of proper humidification.
Combining the brains of a computer
and the simplicity of a garage door
opener in an attractively designed
package, Bryant makes enjoying
the comfort of your home easier
than ever. Just follow the instruc-
tions in this guide, then relax
knowing your Thermidistat Control
is in command of your comfort.
Copyright 1997 Bryant Heating and Cooling Systems
Form: OM17-24 Replaces: OM17-16 Printed in the U.S.A. 9-98 Catalog No. 13TS-TA10
Before purchasing this appliance, please read the important energy
cost and efficiency information available from your dealer.
Manufacturer reserves the right to discontinue, or change at any time,
specifications or designs without notice and without incurring obligations.
COMFORT CONTROL
COMFORT CONTROL
7310 West Morris Street, Indianapolis, IN 46231

PROGRAM button
starts the
programming
process and moves
you from one step to
the next.
COPY PREVIOUS
DAY button copies
the previous day’s
comfort schedule
into the current
day’s schedule.
CHANGE DAY
button advances you
to the next day to be
programmed and
advances the day
of the week
display.
ROOM TEMPERATURE
DISPLAY shows current
room temperature.
TEMPERATURE SETTINGS
DISPLAY shows the
temperature settings for
current time period.
OUTDOOR TEMPERATURE
DISPLAY shows the
outdoor temperature.
TIME OF DAY
DISPLAY exhibits the
time of day.
CLEAN FILTER
INDICATOR lets you
know it is time to
clean or replace your
system’s air filter.
AUXILIARY HEAT
INDICATOR is
displayed when a
heat pump system’s
auxiliary heat is on.
HUMIDITY
button changes
the display to
show himidity
readings and
allows you to
change humidity
settings.
VACATION button
changes temperature
and humidity set
points to lower levels
for optimum energy
efficiency while
you’re away.
RESET FILTER
FUNCTION restarts
the timer that
determines the next
air filter change or
cleaning. Ac
tivated by pressing
VACATION and
END buttons
simultaneously.
UP AND DOWN
buttons change the
temperature and
humidity set points.
They are also used to
access outdoor
temperature and
indoor humidity
levels.
FAN button chooses ON
or AUTO fan operation.
HOLD/END button
maintains the current
temperature settings.
Also used to end
temperature and
humidity programming
sequence.
SET TIME/TEMP button
allows you to enter
the time of day and
temperature settings.
Year-Round Comfort.
Bryant’s ThermidistatTM Control provides enhanced, year-round comfort. By providing both
temperature and humidity control, this simple, yet powerful, device lets you take the steam out
of summer, the static out of winter and helps eliminate that annoying moisture build-up on
your windows when it’s cold outside. It’s never been quite this easy, and you’ve never had quite
this much comfort available through one control.
Simple, Convenient Control.
Bryant puts your family’s comfort at your fingertips with simple instructions, responsive
push buttons and an easy-to-read, lighted display. Once set, the thermidistat control accurately
monitors indoor conditions and reliably meets your desired comfort levels. Plus, you have the
convenience of temporarily bypassing your settings without disrupting your permanent
comfort schedule.
NOTE: Not all messages displayed in above illustration will appear at once in any situation.
MODE button selects OFF, HEAT,
COOL or AUTO operation.
EMERGENCY HEAT (EHEAT) mode
is also included when the
thermidistat control is installed
with a heat pump.

TABLE OF CONTENTS
PROGRAMMING THE THERMIDISTAT CONTROL
Setting the current day........................................1
Setting the current time......................................1
Setting the mode operation ................................2
Setting the fan operation ....................................3
Personalize your comfort....................................5
Setting your comfort schedule............................6
Copying a daily schedule.................................10
Setting the humidification level........................10
Setting the dehumidification level....................13
Setting the “cool to dehumidify” function ........14
OPERATING THE THERMIDISTAT CONTROL
Changing your comfort schedule......................16
Overriding your comfort schedule....................16
Checking the outdoor temperature
and indoor humidity.....................................17
Checking current programmed time
and temperature settings...............................18
Checking current humidification
and dehumidification settings. ......................19
Clean filter feature............................................20
Vacation feature setup......................................21
Vacation feature operation ..............................24
AUTO CHANGEOVER.........................................25
SMART RECOVERY .............................................26
What if…
The auxiliary heat indicator is displayed...........27
The clean filter indicator is displayed...............27
The hold indicator is displayed.........................27
The out indicator is displayed...........................28
You have a power outage.................................28
You have a system error message .....................28
Warranty.............................................................30
Common Terms and Where to Find Them ...........31
i

PROGRAMMING THE THERMIDISTAT CONTROL
Setting the current day
1Press the CHANGE DAY button.
The day of the week will change.
2Stop on the desired day. The Thermidistat
Control then follows the program schedule
for that day.
Setting the current time
1Press the SET TIME/TEMP button.
The word TIME flashes on the display.
2Press the UP or DOWN buttons
until the correct time is displayed. To quickly
advance to the proper time, press and hold
the UP or DOWN button. To ensure accurate
programming, be sure that AM or PM is
properly selected.
1

PROGRAMMING THE THERMIDISTAT CONTROL
3When the correct time appears on the display,
press the HOLD/END button.
NOTE: If you choose not to press the HOLD/END
button, the word TIME will stop flashing after
15 seconds.
NOTE: If you live in a Daylight Savings Time area,
you may advance the time 1 hour in the Spring by
simultaneously pressing the SET TIME/TEMP button
and the UP button. In the Fall, you may set back
the time 1 hour by simultaneously pressing the
SET TIME/TEMP button and the DOWN button.
Setting mode operation
1Press MODE button.
2When the MODE button is pressed, the words
OFF,
HEAT,
2

PROGRAMMING THE THERMIDISTAT CONTROL
COOL,
and AUTO
will rotate on the display.
If you have a heat pump, the display
will show OFF, HEAT, COOL, AUTO,
and EHEAT.
NOTE: In AUTO mode, your system will heat OR
cool as needed to reach your temperature settings.
3Continue to press the MODE
button until you reach the desired setting.
Setting the fan operation
1Press the FAN button to switch
between ON and AUTO fan settings.
When the ON mode is selected, the fan runs
continuously for improved air circulation.
3

PROGRAMMING THE THERMIDISTAT CONTROL
NOTE: If the indoor humidity level is above
the dehumidify setting, the fan will shut off for
5 minutes after the air conditioner shuts off.
During this period, a triangle next to the word
ON will flash.
When the AUTO mode is selected, the fan
runs only as needed to maintain your indoor
temperature settings.
4

PROGRAMMING THE THERMIDISTAT CONTROL
Personalize Your Comfort
Before you program your Thermidistat
Control, take a moment to plan your
temperature schedule. Each day of the
week is divided into 4 time periods:
WAKE, DAY, EVENING, and SLEEP.
For each time period, enter a start time,
heating temperature, and cooling
temperature in the appropriate blank.
Once completed, this chart will be your
guide during programming.
NOTE: Your Thermidistat Control requires your
cooling temperature to be at least 2° higher than
your heating temperature.
5

PROGRAMMING THE THERMIDISTAT CONTROL
HUMIDITY SETTINGS
SUGGESTED SETTINGS
Humidify–
De-humidify – 50% - 60% suggested
depending on installation, area of the
country, and your heating & cooling
equipment.
VACATION SCHEDULE
Setting your comfort schedule
Before you begin programming, refer to
page 5 of this manual to plan your
personal comfort schedule.
1Press the PROGRAM button.
The word PROGRAMMING appears on the
display and the word TIME flashes on
the display.
6

PROGRAMMING THE THERMIDISTAT CONTROL
Above the clock, the word WAKE, DAY, EVE,
or SLEEP will appear.The day to be programmed
is displayed with a 2-letter abbreviation:
MO, TU, WE, TH, FR, SA, or SU.
NOTE: Your Thermidistat Control will always start
the programming process in the current time
period and current day. You may wish to begin pro-
gramming on a different day or time period.
To change the time period, press the PROGRAM
button as needed until the correct time period,
WAKE, DAY, EVE, or SLEEP appears. Press the
CHANGE DAY button to display the desired day.
2Using your personalized comfort
schedule as a guide, press the UP and
DOWN buttons to set the time for the
indicated time period.
3Press the SET TIME/TEMP button.
The word HEAT flashes on the display.
7

PROGRAMMING THE THERMIDISTAT CONTROL
NOTE: Pressing the SET TIME/TEMP button
allows you to select between HEAT, COOL, and
TIME settings.
4Press the UP and DOWN buttons
to adjust the heating temperature setting to
match your personalized comfort schedule.
5Press the SET TIME/TEMP button to
select the cooling temperature setting for this
time period.
The word COOL flashes on the display.
6Press the UP and DOWN buttons
to adjust the cooling temperature setting
listed in your personalized comfort schedule.
NOTE: Your COOL setting must be at least 2°
higher than your HEAT setting. Your Thermidistat
Control will automatically change your previously
set temperature to maintain that 2° difference.
8

PROGRAMMING THE THERMIDISTAT CONTROL
7Press the PROGRAM button to
advance to the next time period. Following
your personalized comfort schedule, enter
times and temperatures for DAY, EVE, and
SLEEP time periods.
You have now programmed 1 day into your
Thermidistat Control. At this time, you can
either repeat steps 1-7 until all days of the
week have been programmed, OR you can
copy the schedule onto the remaining days of
the week. See the section on ”Copying a
daily schedule“ for details.
NOTE: During programming, if you have not
touched a button or made an entry within 3 min-
utes, the programming mode will automatically
shut off. Anything you have programmed will be
saved.
8Press the HOLD/END button when
you finish entering your comfort schedule.
NOTE: Once you’ve programmed your comfort
schedule, the Thermidistat Control will continue
operating on that program until you enter an
alternative schedule. It may be appropriate to
adjust temperatures as seasons change.
9

PROGRAMMING THE THERMIDISTAT CONTROL
Copying a daily schedule
Typically, your Monday through Friday
comfort schedule will be the same. That’s
why the Thermidistat Control includes a
COPY PREVIOUS DAY button. When
programming, this eliminates the need to
re-enter identical information for each day.
1Program a daily schedule.
Suggestion: Start with Monday so the
following 4 days can be copied.
2Press the CHANGE DAY button
to move to the next day.
3Press the COPY PREVIOUS DAY
button.
The previous day’s schedule will be entered
into the new day.
4Continue this process by repeating
steps 2 and 3.
Setting the humidification level
1Press the HUMIDITY button to
enter the humidity programming mode.
The current indoor humidity (large number) is
displayed along with the humidify setting
indicator (hu) or dehumidify (dhu) setting
indicator and the current humidify set point
(small number).
10

PROGRAMMING THE THERMIDISTAT CONTROL
If the dhu indicator is displayed, press the
HUMIDITY button again to display
the hu indicator.
NOTE: To change between humidify (hu) and
dehumidify (dhu), press the HUMIDITY button.
2With the humidify (hu) setting
displayed, press the UP or DOWN button to
adjust the humidify setting. Humidity levels
can be set from 10% to 45%. Or, to turn
humidification off, press the MODE button
until ”OF“ appears on the display.
(See suggested settings on page 6)
3Press the MODE button to select
between:
a. FAN indicator displayed — fan and humidifier
on every time humidification is needed.
11

PROGRAMMING THE THERMIDISTAT CONTROL
NOTE: With the FAN indicator on, you will realize
maximum humidification, but the air may feel cold
because the heat source is not always on. With the
FAN indicator off, you will conserve water and
electricity with adequate humidification.
b. AUTO indicator displayed — humidify
setting automatically changes according to
outdoor weather. This reduces the chance of
moisture buildup on windows in colder
weather.
NOTE: This feature requires the use of the outdoor
air temperature sensor.
c. AUTO and FAN displayed — combines
the features of a and b.
d. OF displayed — humidify function is
turned off.
12

PROGRAMMING THE THERMIDISTAT CONTROL
e. Humidify setting only displayed —
humidify setting does not change according
to outdoor temperature.
4Press the HOLD/END button to
exit the humidity programming mode.
Setting the dehumidification level
NOTE: This optional function is for use with
variable capacity equipment only.
1Press the HUMIDITY button to
enter the humidification programming mode.
The current indoor humidity (large number) is
displayed along with the humidify (hu) or
dehumidify (dhu) setting indicator and the
current dehumidify set point (small number).
If the hu indicator is displayed, press the
HUMIDITY button again to display
the dhu indicator.
NOTE: To change between humidify (hu) and
dehumidify (dhu), press the HUMIDITY button.
13

PROGRAMMING THE THERMIDISTAT CONTROL
2With the dehumidify setting
displayed, press the UP or DOWN button to
adjust the dehumidify setting. Dehumidify
levels can be set from 50% to 90%. Or, to
turn dehumidification off, press the MODE
button until OF appears on the display.
(See suggested settings on page 6)
3Press the HOLD/END button
to exit.
Setting the “cool to dehumidify”
function
This setting allows a standard comfort
system to provide moderate
dehumidification by running the air
conditioner. The function can also be
used with variable-capacity equipment.
NOTE: While in the “cool to dehumidify” mode,
the indoor air temperature will not drop more
than 3° below the cooling set point with a
dehumidification demand.
14

PROGRAMMING THE THERMIDISTAT CONTROL
1Press the HUMIDITY button until
”dhu“ is displayed.
2Press the UP or DOWN buttons to
raise or lower the dehumidify setting.
Dehumidification can be set from 50% to 90%.
To turn dehumidification off, press the MODE
button until OF appears on the display.
3Press the MODE button until the
COOL icon is displayed.
4Press the HOLD/END button
to exit.
15

OPERATING THE THERMIDISTAT CONTROL
Changing your comfort schedule
1Press the PROGRAM button to
begin the programming process.
2Make necessary changes by
following previous sections.
3Press the HOLD/END button to
end the programming process.
NOTE: Entering new information always deletes
the old selections. Refer to the table of contents
at the front of this guide to locate the type of
programming you desire.
Overriding your comfort schedule
There are 2 ways to override the existing
program.
1Pressing the HOLD/END button.
By pressing the HOLD/END button, the
Thermidistat Control will maintain the current
temperature settings and ignore the comfort
schedule for an indefinite period of time.
The word HOLD will appear in the display.
Press the HOLD button a second time and
the Thermidistat Control will resume normal
operation, returning the temperature settings
to the programmed comfort schedule. The
Thermidistat Control will change the
temperature setting as needed upon the next
16