Bryant AND THERMIDISTAT CONTROL Assembly instructions

Thermidistat
Control™
Homeowner’s
Guide
Simple, Energy
Efficient Control.
As the owner of a Bryant Thermidistat
Control, you can look forward to years of
reliable, energy-efficient indoor comfort.
This smart, easy-to-use control center
combines computer-like intelligence with
simple operation in a streamlined design.
It maximizes the performance of your
Bryant indoor comfort system so you and
your family can enjoy consistent indoor
temperatures enhanced by proper
humidity control. The precision perfor-
mance of our Thermidistat Control keeps
you comfortable while conserving energy.
Just follow the simple instructions
outlined in this manual and let Bryant’s
Thermidistat Control deliver the simple,
worry-free comfort and extra energy
savings that you deserve.
Copyright 1997 Bryant Heating and Cooling Systems
Form: OM17-25 Replaces: OM17-22 Printed in the U.S.A. 9-98 Catalog No. 13TS-TA11
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

Thermidistat
Control™
Homeowner’s
Guide
Simple, Energy
Efficient Control.
As the owner of a Bryant Thermidistat
Control, you can look forward to years of
reliable, energy-efficient indoor comfort.
This smart, easy-to-use control center
combines computer-like intelligence with
simple operation in a streamlined design.
It maximizes the performance of your
Bryant indoor comfort system so you and
your family can enjoy consistent indoor
temperatures enhanced by proper
humidity control. The precision perfor-
mance of our Thermidistat Control keeps
you comfortable while conserving energy.
Just follow the simple instructions
outlined in this manual and let Bryant’s
Thermidistat Control deliver the simple,
worry-free comfort and extra energy
savings that you deserve.
Copyright 1997 Bryant Heating and Cooling Systems
Form: OM17-25 Replaces: OM17-22 Printed in the U.S.A. 9-98 Catalog No. 13TS-TA11
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

OUTDOOR TEMPERATURE
DISPLAYS shows the out-
door temperature.
ROOM TEMPERATURE
DISPLAYS shows current
room temperature. TIME OF DAY
DISPLAY exhibits the
time of day.
MODE button selects OFF, HEAT,
COOL and AUTO operation.
EMERGENCY HEAT (EHEAT) mode
is also included when the
thermidistat control is installed
with a heat pump.
FAN button
chooses ON
or AUTO fan
operation.
END button
completes the
temperature
and humidity
set-up
sequence.
SET HUM button
allows you to
change
humidification
set point.
SET TIME button
allows you to
enter the time
of day.
SET DHUM
button allows
you to change
dehumidification
set point.
SET HEAT button
allows you to
enter your
desired heating
set point.
SET COOL button
allows you to
enter your
desired cooling
set point.
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.
Activated by press-
ing VACATION and
END buttons simul-
taneously.
UP AND DOWN
buttons change
the temperature
and humidity set
points. They are
also used to
access outdoor
temperature and
indoor humidity
levels.
AUXILIARY HEAT
INDICATOR
is displayed when
a heat pump sys-
tem’s auxiliary
heat is on.
CLEAN FILTER
INDICATOR
lets you know
when it’s time to
clean or replace
you system’s air
filter
Year-Round Comfort.
Bryant’s Thermidistat 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. Comfort has never been quite this easy.
Making Life Easier.
Bryant puts your family’s comfort at your fingertips with simple instructions,
responsive push buttons an an easy-to-read backlit LCD display. Once set, the
Thermidistat Control accurately monitors indoor conditions and reliably meets
your needs for consistent, energy-efficient indoor comfort.
NOTE: Not all messages displayed in above illustration will appear at once in any situation.

TABLE OF CONTENTS
SETTING UP THE THERMIDISTAT CONTROL
Setting your indoor temperature set points ...1
Setting the current time ................................2
Setting the mode operation ..........................3
Setting the fan operation ..............................5
Setting the humidification set point ..............6
Setting the dehumidification set point ..........9
Setting the “cool to dehumidify” function ..10
OPERATING THE THERMIDISTAT CONTROL
Checking current temperature ....................12
Checking the outdoor temperature
and indoor humidity ...............................12
Checking current humidification
and dehumidification set points ..............13
Clean filter feature .....................................14
Vacation feature setup ................................15
Vacation feature operation .........................19
AUTO CHANGEOVER ..................................20
WHAT IF…
The auxiliary heat indicator is displayed ....21
The clean filter indicator is displayed .........21
You have a power outage ...........................22
You have a system error message ...............22
Warranty .......................................................24
Common Terms and Where to Find Them .....25
i

SETTING UP THE THERMIDISTAT CONTROL
Setting your temperature set points
Setting the desired heating set point
1Press the SET HEAT button.
The word HEAT flashes on the display.
2Press the UP or DOWN
button until the correct
heating set point is displayed.
3Press the END button to exit.
Setting the desired cooling set point
1Press the SET COOL button.
The word COOL flashes on the display.
1

SETTING UP THE THERMIDISTAT CONTROL
2Press the UP or DOWN
button until the correct
cooling set point is displayed.
3Press the END button to exit.
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.
Setting the current time
1Press the SET TIME button.
The word TIME flashes on the display.
2Press the UP or DOWN
button until the correct
time is displayed. To quickly advance to
2

SETTING UP THE THERMIDISTAT CONTROL
the proper time, press and hold the UP
or DOWN button. Be sure that AM or
PM is properly selected.
3When the correct time
appears on the display, press the END
button.
NOTE: If you choose not to press the END
button, the wordTIME 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 button and the UP
button. In the fall, you may set the time
back 1 hour by simultaneously pressing the
SET TIME button and the DOWN button.
Setting the mode operation
1Press the MODE button.
3

SETTING UP THE THERMIDISTAT CONTROL
2When the MODE button is pressed,
the words
OFF,
HEAT,
COOL,
and AUTO
will rotate on the display.
If you have a heat pump, the display
will show OFF, HEAT, COOL, AUTO,
and EHEAT.
4

SETTING UP THE THERMIDISTAT CONTROL
NOTE: In AUTO mode, your system will
heat OR cool as needed to reach your
temperature settings. AUTO mode may be
disabled.
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.
5

SETTING UP 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 preferred indoor temperature
settings.
Setting the humidification set point
1Press the SET HUM button
to enter the humidify mode.
The current indoor humidity (large
number) and humidify set point (small
number) are displayed along with the
humidify indicator (hu).
6

SETTING UP THE THERMIDISTAT CONTROL
2With the humidify indicator
(hu) displayed, press the
UP or DOWN button to adjust the
humidify set point. 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 27.)
3Press the MODE button to
select between:
a. FAN indicator displayed —
fan and humidifier on every time
humidification is needed.
NOTE: With the FAN indicator displayed,
you will realize maximum humidification,
but the air may feel cold because the heat
7

SETTING UP THE THERMIDISTAT CONTROL
source is not always on. Without the FAN
indicator displayed, 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 an
outdoor air temperature sensor.
c. AUTO and FAN displayed — com-
bines the features of a and b.
d. OF displayed —
humidify function is turned off.
8

SETTING UP THE THERMIDISTAT CONTROL
e. Humidify setting only displayed —
humidify setting does not change
according to outdoor temperature.
4Press the END button to
exit the humidify mode.
Setting the dehumidification set point
NOTE: This function is for use with
variable-speed equipment only.
1Press the SET DHUM
button to enter the dehumidify mode.
The current indoor humidity (large number)
and dehumidify set point (small number)
are displayed along with the dehumidify
indicator (dhu).
9

SETTING UP THE THERMIDISTAT CONTROL
2
With the dehumidify
indicator (dhu) displayed,
press the UP or DOWN button to adjust
the dehumidify set point. 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 26.)
3Press the END button to exit.
Setting the “cool to dehumidify”
function
This setting allows a standard comfort
system to provide moderate dehumidi-
fication by running the air conditioner.
The function can also be used with
variable-speed 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.
10

SETTING UP THE THERMIDISTAT CONTROL
1Press the SET DHUM
button. “dhu” is displayed.
2Press the UP or DOWN
button to raise or lower the
dehumidify set point.
Dehumidification can be set from 50%
to 90%.
3Press the MODE button
until the COOL icon is displayed.
4Press the END button to exit.
11

OPERATING THE THERMIDISTAT CONTROL
Checking current temperature
The Thermidistat Control will display
the current temperature.
To view your current
temperature set points,
press the UP or DOWN
button once. The heating and cooling
set points will be displayed.
Checking the outdoor temperature
and indoor humidity
1Press the UP and DOWN
buttons simultaneously.
2The outdoor
temperature
will appear on
the display.
Then, the indoor
humidity will
be displayed.
12

OPERATING THE THERMIDISTAT CONTROL
NOTE: If 2 dashes (--) appear, your
Thermidistat Control does not include
the outdoor air temperature sensor or the
sensor is not working properly. Check
with your dealer if you are unsure.
Checking current humidification
and dehumidification set points
1Press the SET HUM button.
The current indoor humidity (large num-
ber) is displayed along with the humidify
set point (small number).
2Press the END button.
13

OPERATING THE THERMIDISTAT CONTROL
3Press the SET DHUM button.
The current indoor humidity (large num-
ber) is displayed along with the
dehumidify set point (small number).
4Press the END button.
Clean filter feature
YourThermidistat Control reminds you
when it’s time to change or clean your filter
by displaying the CLEAN FILTER indicator.
1Press the VACATION and
END buttons simultaneously
after you have changed or
cleaned your filter to restart the timer.
14

OPERATING THE THERMIDISTAT CONTROL
Vacation feature setup
The vacation feature allows a separate
set of temperature and humidity set
points to be stored for vacation and
recalled with a single button press.
The vacation feature is preprogrammed
for you with vacation settings for
temperature and humidity. (Heat 60°,
cool 85°, hu 10%, dhu 75%) If these
are okay, skip ahead to “vacation
feature operation.” If you wish to enter
new settings, continue with this section.
1Press the VACATION
button to display the vacation
temperature settings.
The OUT indicator is displayed.
15

OPERATING THE THERMIDISTAT CONTROL
2 To change the cooling set point:
a.) Press the SET COOL
button. COOL will flash on the display.
b.) Press the UP or DOWN
button to adjust the setting.
c.) Press the END button
to end.
3 To change the heating set point:
a.) Press the SET HEAT but-
ton. HEAT will flash on the display.
b.) Press the UP or DOWN
button to adjust the setting.
c.) Press the END button
to end.
16