Bryant T2SNHP01 Thermostat User Manual

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T2SNAC01, T2SNHP01  
NON -- PROGRAMMABLE THERMOSTAT  
Installation Instructions  
Models  
There are 2 different models. The 5th and 6th letters of the part  
number indicate the model. These 2 letters also appear on the  
package and on the circuit board. Be sure to have the proper  
thermostat for the intended application. Models are:  
AC -- 1 -- stage cool, 1 -- stage heat for AC systems only.  
HP -- 1 -- stage cool, 2 -- stage heat for either HP, or AC with 2 -- stage  
heat.  
Use each only for its intended purpose. See Table 1.  
INSTALLATION  
Thermostat Location  
Thermostat should be mounted:  
S Approximately 5 ft. (1.5m) from floor.  
S Close to or in a frequently used room, preferably on an inside  
partitioning wall.  
S On a section of wall without pipes or duct work.  
A08148  
NOTE: Read the entire instruction manual before starting the  
installation.  
Thermostat should NOT be mounted:  
S Close to a window, on an outside wall, or next to a door leading  
to the outside.  
SAFETY CONSIDERATIONS  
S Exposed to direct light and heat from a lamp, sun, fireplace, or  
Read and follow manufacturer instructions carefully. Follow all  
local electrical codes during installation. All wiring must conform  
to local and national electrical codes. Improper wiring or  
installation may damage thermostat.  
other temperature -- radiating object which may cause a false  
reading.  
S Close to or in direct airflow from supply registers and return -- air  
grilles.  
Recognize safety information. This is the safety -- alert symbol  
.
S In areas with poor air circulation, such as behind a door or in an  
When you see this symbol on the equipment and in the instruction  
manual, be alert to the potential for personal injury.  
alcove.  
Understand the signal words DANGER, WARNING, and  
CAUTION. These words are used with the safety -- alert symbol.  
DANGER identifies the most serious hazards which will result in  
severe personal injury or death. WARNING signifies a hazard  
which could result in personal injury or death. CAUTION is used  
to identify unsafe practices which may result in minor personal  
injury or product and property damage. NOTE is used to highlight  
suggestions which will result in enhanced installation, reliability, or  
operation.  
Select Model  
AC Model  
(1 -- stage cool, 1 -- stage heat) is to be used for single stage heating  
and/or cooling applications only.  
HP Model  
(
1 -- stage cool, 2 -- stage heat) can be used with a single -- speed heat  
pump (HP), or an air conditioner (AC) with a 2 -- stage furnace or  
fan coil. Software Option 5 selects HP/AC operation. This  
thermostat comes configured from the factory as a heat pump  
thermostat. Select AC in software Option 5 for AC operation.  
Power  
Note that all thermostats are dual powered where batteries can be  
installed or in the presence of R and C (24vac) are not required.  
Two AA batteries are furnished with the product.  
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Table 1 – Model Selection and Wiring Diagram Chart  
AIR CONDITIONER  
HEAT PUMP  
1 Speed  
OUTDOOR UNIT  
1
Speed  
1
2
--- Stage Furnace  
--- Stage Furnace  
Model AC See Fig.  
---  
---  
Model AC See Fig.  
Model AC See Fig.  
Model HP See Fig.  
Model HP See Fig.  
Typical Fan Coil  
Model HP See Fig.  
Va r ia b le --- Sp e e d Fa n C o il ( F K 4 D,  
FV4, 40FK)  
Model AC See Fig.  
Model HP See Fig.  
Model HP See Fig.  
Install Thermostat  
!
CAUTION  
!
WARNING  
ELECTRICAL OPERATION HAZARD  
ELECTRICAL OPERATION HAZARD  
Failure to follow this caution may result in equipment damage  
or improper operation.  
Failure to follow this warning could result in personal injury  
or death.  
Improper wiring or installation may damage the thermostat  
Check to make sure wiring is correct before proceeding with  
installation or turning on unit.  
Before installing, modifying, or servicing system, main  
electrical disconnect switch must be in the OFF position. There  
may be more than 1 disconnect switch. Lock out and tag  
switch with a suitable warning label.  
9
. Push any excess wire into wall and against mounting base.  
Seal hole in wall to prevent air leaks. Leaks can affect  
operation.  
1
2
. Turn OFF all power to unit.  
. If an existing thermostat is being replaced:  
a. Remove existing thermostat from wall.  
10. Snap case back together.  
11. Close thermostat assembly making sure pins on back of  
circuit board align with sockets in connector.  
b. Disconnect wires from existing thermostat, 1 at a time.  
Be careful not to allow wires to fall back into the wall.  
12. Turn ON power to unit.  
c. As each wire is disconnected, record wire color and  
terminal marking.  
NOTE: If a common wire has not been connected, two AA  
batteries must be used to power the thermostat.  
d. Discard or recycle old thermostat.  
NOTE: Mercury is a hazardous waste and MUST be disposed of  
Make sure the customer is informed about changing the batteries  
every 12 months, if a common wire is not available.  
properly.  
If a common wire is connected, then batteries are not needed for  
any reason. Batteries may be installed if desired but the thermostat  
will not draw power from them.  
3
. Open thermostat (mounting base) to expose mounting  
holes. The base can be removed to simplify mounting. Snap  
apart carefully to separate mounting base from remainder of  
thermostat.  
Set Thermostat Configuration  
Configuration options are intended to be selected at installation and  
are normally not modified by the home owner. These options are  
not discussed in the Homeowner’s Guide and therefore must be  
made as part of the installation. A special procedure allows entry  
into the configuration mode. The thermostat will automatically exit  
this mode if no button is pressed for 3 minutes. While in the  
configuration mode, up to 14 option choices can be made:  
NOTE: If thermostat will not separate, insert a small screwdriver  
into top slots for ease of opening.  
4
. Route thermostat wires through large hole in mounting  
base. Level mounting base against wall (for aesthetic value  
only -- thermostat need not be leveled for proper operation)  
and mark wall through 2 mounting holes.  
5
6
. Drill two 3/16” (5mm) mounting holes in wall where  
marked.  
Option 01: Anticipator setting  
Option 02: Clean filter setting  
Option 03: Fahrenheit or Celsius selection  
Option 04: Enable fan (G) on with W output  
Option 05: HP / AC  
. Secure mounting base to wall with 2 anchors and screws  
provided, (additional anchoring holes available for more se-  
cure mounting if needed) making sure all wires extend  
through hole in mounting base.  
. Adjust length and routing of each wire to reach proper ter-  
minal and connector block on mounting base with 1/4”  
Option 07: Enable zoning  
7
8
Option 10: O (reversing valve) ON with Heat or Cool (present on  
Heat Pump models only)  
(6mm) of extra wire. Strip only 1/4” (6mm) of insulation  
from each wire to prevent adjacent wires from shorting  
together when connected.  
Option 13: Room temperature offset adjustment  
Option 15: Enable AUTO mode  
Option 18: Backlight Configuration  
Option 19: Equipment Present  
. Match and connect equipment wires to proper terminals of  
the connector blocks. (See Table 1.)  
Option 21: Keypad Lockout  
An explanation for each of these and how to enter the  
configuration mode follows.  
2
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To enter the configuration mode:  
To enter Configuration Mode, hold the FAN button down for  
approximately 15 seconds. After the 15 second period, Option  
OPTION 03 -- FAHRENHEIT/CELSIUS SELECTION  
This option selects Fahrenheit or Celsius operation.  
To Select:  
“01” will appear in the display and the SERVICE icon will be  
1
2
. Enter configuration mode (if not already there).  
turned on.  
. Use up and down buttons to display Option 03. The SET  
icon should be off.  
NOTE: If the FAN button is pressed again or if no button is  
pressed for 3 minutes, the thermostat will exit the configuration  
mode and return to normal operation. To reenter the configuration  
mode, the FAN button must be pressed and held for 15 seconds  
again.  
3
4
. Press MODE button once. The SET icon will come on. The  
display now shows Option 03 setting.  
. Use up and down buttons to move between the available  
Option 03 choices of F (Fahrenheit) or C (Celsius). Factory  
default is F.  
While in configuration mode:  
The display is used to show both the option number and the  
selection choice within that option.  
5
6
. Press MODE button again to return to Option 03. The SET  
icon will now be off.  
OPTION 01 -- ANTICIPATOR ADJUSTMENT  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
This adjustment controls the sensitivity and cycle rate of the  
thermostat. Higher numbers decrease the sensitivity and slow the  
cycle rate. Lower numbers increase sensitivity and increase cycle  
rate. However, a limiting feature will not allow more than 6  
equipment cycles per hour, regardless of setting. Values can range  
from 1 to 9. Factory default setting is 3. This default selection will  
provide optimum performance in nearly all installations. Try it  
first. Do not change setting unless there is evidence of need to do  
so.  
Unlike conventional anticipators, this setting is not to be  
determined by current draw. There is no need to measure, know, or  
compensate for current. There is also no droop with this  
thermostat, regardless of anticipator setting. This adjustment  
controls only sensitivity and cycle rate up to the maximum of 6  
cycles per hour.  
OPTION 04 -- G (FAN) ON WITH W OUTPUT  
This selection determines whether the G (fan) output is to be ON or  
OFF when any W (furnace or strip heat) output is ON. Most  
furnaces and fan coils manage their own blowers and do not  
require a separate G signal. For these applications, select OFF.  
Some auxiliary heaters require a separate G signal to turn on the  
blower. In this case, select On. Factory default is OF (off).  
To Select:  
1. Enter configuration mode (if not already there).  
2. Use up and down buttons to display Option 04. The SET  
icon should be off.  
3
. Press MODE button once. The SET icon will come on. The  
display now shows Option 04 setting.  
To Adjust:  
4
. Use up and down buttons to move between available  
Option 04 choices of ON or OF. Factory default is OF.  
1
2
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 01. The SET  
icon should be off.  
5. Press MODE button again to return to Option 04. The SET  
icon will now be off.  
3
4
5
6
. Press MODE button once. The SET icon will come on. The  
display now shows Option 01 setting.  
. Use up and down buttons to move between the available  
Option 01 values of 1 to 9. Factory default is 3.  
. Press MODE button again to return to Option 01. The SET  
icon will now be off.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
6. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
OPTION 05 -- HP / AC CONFIGURATION  
This configuration is available on HP models only. Selecting AC  
allows the installer to use a HP thermostat in an air conditioner  
application.  
To Select:  
1
2
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 05. The SET  
icon should be off.  
OPTION 02 -- CLEAN FILTER TIMER  
This option selects the number of hours of blower operation  
heating, cooling, or fan) before SERVICE FILTER icon is  
(
3
4
5
6
. Press MODE button once. The SET icon will come on. The  
display now shows Option 05 setting.  
displayed. With OF selected, the icon will never come on,  
disabling this feature. Time selection can be from 400 to 3600  
hours by selecting numbers 1 through 9. (Time is 400 X number  
selected.) Factory default is 2 (800 hours). Recommended  
selections are: disposable filter 800 hr, media filter 1200 to 1600  
hr, or electronic air cleaner 1600 to 2400 hr of blower operation.  
. Use up and down buttons to move between available  
Option 05 choices of AC or HP. Factory default is HP.  
. Press MODE button again to return to Option 05. The SET  
icon will now be off.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
To Adjust:  
1
2
. Enter configuration mode (if not already there).  
OPTION 07 -- ZONING ON/OFF CONFIGURATION  
. Use up and down buttons to display Option 02. The SET  
icon should be off.  
This selection enables or defeats cycle timer, the staging timer, and  
the compressor timeguard. (See Operational Information for  
details.) These timers MUST be enabled (zoning OFF) for normal  
operation and disabled (zoning ON) for zoning applications.  
3
4
. Press MODE button once. The SET icon will come on. The  
display now shows Option 02 setting.  
. Use up and down buttons to move between the available  
Option 02 values of OF and 1 through 9. Factory default is  
In zoning applications, the zone control center performs these  
timing functions. Factory default is OF.  
To Select:  
2
.
5
6
. Press MODE button again to return to Option 02. The SET  
icon will now be off.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
1
2
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 07. The SET  
icon should be off.  
3
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3
4
5
6
. Press MODE button once. The SET icon will come on. The  
display now shows Option 07 setting.  
. Use up and down buttons to move between available  
Option 07 choices of ON or OF. Factory default is OF.  
3. Press MODE button once. The SET icon will come on. The  
display now shows Option 15 setting.  
4. Use up and down buttons to move between available  
Option 15 choices of ON or OF. Factory default is ON.  
. Press MODE button again to return to Option 07. The SET  
icon will now be off.  
5. Press MODE button again to return to Option 15. The SET  
icon will now be off.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
6. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
OPTION 10 -- O (REVERSING VALVE) ON WITH HEAT  
OR COOL SELECTION  
OPTION 18 -- BACKLIGHT CONFIGURATION  
This function is only available when the thermostat is operating  
from full power via R and C. It is not available when the  
thermostat operates from batteries. In OF (off) mode, this function  
is disabled. The thermostat backlight will normally be off. It turns  
on with any button press and stays on for 10 seconds in between  
button presses. In ON mode, this function is enabled. The  
thermostat backlight will normally be on and dim in appearance.  
The backlight becomes brighter with any button press and remains  
bright for 10 seconds. Factory default is OF.  
This selection is only available on HP model thermostats when HP  
is selected via Option 05. This selection determines whether the  
reversing valve is energized in the heating or cooling mode.  
Factory default is C, energized in cooling. Use up and down  
buttons to change between H and C.  
To Select:  
1
2
3
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 10.  
. Press MODE button once. The SET icon will come on. The  
isplay now shows Option 10 setting.  
To Select:  
1
2
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 18. The SET  
icon should be off.  
4
. Use up and down buttons to move between available  
Option 10 choices of H (heat) or C (cool). Factory default is  
C.  
3
4
5
6
. Press MODE button once. The SET icon will come on. The  
display now shows Option 18 setting.  
5
6
. Press MODE button again to return to Option 10. The SET  
icon will now be off.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
. Use up and down buttons to move between available  
Option 18 choices of ON or OF. Factory default is OF.  
. Press MODE button again to return to Option 18. The SET  
icon will now be off.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
OPTION 13 -- ROOM TEMPERATURE OFFSET  
This option allows calibration (or deliberate miscalibration) of  
room temperature sensor. There are various reasons why the home  
owner may want to have displayed temperature adjusted to a  
higher or lower value. The selected number is the number of  
degrees, plus or minus, which will be added to the actual  
temperature. The number can range between -- 5 and +5. Factory  
default is 0. This adjusted value will be used as actual temperature  
for both display and control action. For example, if 2 is selected,  
OPTION 19 -- EQUIPMENT PRESENT  
This selection informs the thermostat of the heat, cool, and fan  
capabilities of the installed equipment. Select number 2, 3, or 4.  
Default is 4.  
For equipment with heat and cool capability and fan selection,  
choose 4.  
For equipment with only heat or cool, but with fan selection,  
choose 3.  
For equipment with only heat or cool and no fan selection, choose  
7
2_F/22_C actual will read 74_F/23_C. If setpoint is 72_F/22_C,  
the room will control to an actual value of 70_F/21_C which will  
be displayed and acted upon as if it were 72_F/22_C. The effect is  
that a positive number selection will make the room temperature  
lower and vice versa.  
2
.
To Select:  
To Select:  
1
2
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 19. The SET  
icon should be off.  
1
2
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 13. The SET  
icon should be off.  
3
4
5
6
. Press MODE button once. The SET icon will come on. The  
display now shows Option 19 setting.  
. Use up and down buttons to move between available  
Option 19 choices of 2 through 4. Factory default is 4.  
3
4
. Press MODE button once. The SET icon will come on. The  
display now shows Option 13 setting.  
. Use up and down buttons to move between available  
Option 13 choices of -- 5 through +5 in 1_ steps. Factory  
default is 0.  
. Press MODE button again to return to Option 19. The SET  
icon will now be off.  
5
6
. Press MODE button again to return to Option 13. The SET  
icon will now be off.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
OPTION 21 -- KEYPAD LOCKOUT  
In OF (off) mode, the keypad is not locked out and has full  
functionality. In ON mode, the keypad is locked out and the lock  
icon on the display is illuminated. To unlock the keypad, the user  
must press and hold the up and down buttons simultaneously for  
approximately 5 seconds. The lock icon is turned off and the  
keypad will remain unlocked as long as the user presses a button at  
least every 30 seconds or for the entire duration of the installer test  
mode. If keypad remains idle for 30 seconds and the installer test  
mode is not in operation, the keypad will return to the locked state  
and the lock icon will illuminate on the screen.  
OPTION 15 -- AUTO MODE ON/OFF SELECTION  
This options allows the installer to enable or disable AUTO mode  
(automatic changeover between heat and cool). When disabled,  
AUTO icon does not appear when successive presses of MODE  
button are used to move between OFF, HEAT, and EHEAT (in heat  
pump systems). Factory default is ON (AUTO mode enabled).  
To Select:  
1
2
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 15. The SET  
icon should be off.  
4
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To Select:  
2. Pressing the FAN button while the heating or cooling  
equipment is not running will turn on the FAN relay and  
display the FAN icon.  
1
2
. Enter configuration mode (if not already there).  
. Use up and down buttons to display Option 21. The SET  
icon should be off.  
3
. If the mode is set to COOL, the first stage of cooling turns  
on for three, then first and second stages (if a second stage  
exists) will turn on for three minutes.  
3
4
5
6
. Press MODE button once. The SET icon will come on. The  
display now shows Option 21 setting.  
4
. If the mode is set to EHEAT, auxiliary heat turns on for  
three minutes, then the mode returns to OFF.  
. Use up and down buttons to move between available  
Option 21 choices of ON or OF. Factory default is OF.  
Terminating Installer Test  
. Press MODE button again to return to Option 21. The SET  
icon will now be off.  
. Use up and down buttons to select another Option, or press  
FAN button to exit configuration mode.  
After 15 minutes of inactivity (no button presses by the installer),  
thermostat will automatically revert to normal operation. Pressing  
RESET FILTER any time during installer test will terminate  
installer test and return the thermostat to normal operation.  
Installer Test Mode  
Step 5 -- Check Thermostat Operation  
Fan Operation  
Installer test will be initiated by pressing the fan button for 20  
seconds (15 seconds will enter installer setup) “InS” will appear on  
the screen and the SERVICE icon will be illuminated.  
In installer test mode, pressing the MODE button will change the  
system operating mode. Note that AUTO mode is not available in  
installer test. Heating and cooling modes must be tested  
independently.  
1. Press FAN button, starting continuous fan operation. FAN  
icon turns on.  
2. Press FAN button again, stopping fan operation. FAN icon  
turns off. (Some fan coils have 90 second fan off delay, so  
fan may not stop immediately.)  
1
. If the mode is set to HEAT, the first stage of heating will be  
energized for three minutes (180 seconds), and then the first  
and second stages (if a second stage exists) will turn on for  
an additional three minutes. Installer test will always attempt  
to run a second stage output whether it is attached or not,  
providing a minimum of 6 minutes of first stage operation.  
At the end of the 6 minute period, the MODE will return to  
OFF.  
Checklist  
1
2
3
. Run equipment through several heating and cooling cycles  
to ensure proper operation.  
. If equipment is to be left in operation, setpoint and  
operating mode must be properly selected.  
. Put away tools and instruments, and clean up debris.  
4. Review Homeowner’s Guide with owner.  
. Leave literature packet with owner.  
5
Table 2 – Non -- Programmable -- C Thermostat Quick Reference  
THERMOSTAT OUTPUT  
TSTAT  
Model  
Outdoor  
Unit  
Option  
5
24V  
Hot  
Heat  
Stage 1  
Heat  
Stage 2  
Cool  
Stage 1  
Reversing  
Valve  
Common  
Fan  
T2SNAC01  
T2SNHP01  
T2SNHP01  
AC  
HP  
AC  
N/A  
OFF  
ON  
R
R
R
C
C
C
G
G
G
W
Y
W
N/A  
W
O/B  
Y
Y
Y
N/A  
O/B  
N/A  
Thermostat  
Heat  
Furnace  
W
Air Conditioner  
Thermostat  
Furnace  
Air Conditioner  
W
Heat  
W
W1  
W2  
Cool  
Fan  
Y
G
R
Y
G
R
Y
Y1  
Y/Y2  
G
2
4VAC  
Cool  
Fan  
Y
G
R
Y
2
4VAC  
R
*
Common  
C
C
C
HUM  
C
*
Common  
C
C
A08161  
A08162  
*
Common connection not required if batteries are used.  
*Common connection not required if batteries are used.  
Fig. 3 -- A/C Thermostat with 2 -- Stage or Variable  
Speed Furnace  
Fig. 2 -- A/C Thermostat with Furnace  
5
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Thermostat  
Heat  
Fan Coil  
W
Heat Pump  
Thermostat  
Heat  
Fan Coil  
W
Air Conditioner  
O/B  
W
O
W
W
W
Cool  
Fan  
Y
G
R
Y
G
R
Y
R
Cool  
Fan  
Y
G
R
Y
G
R
Y
R
2
4VAC  
2
4VAC  
*
Common  
C
C
C
*
Common  
C
C
C
A08163  
A08164  
*
Common connection not required if batteries are used.  
*Common connection not required if batteries are used.  
Fig. 4 -- HP Thermostat with Fan Coil  
Fig. 5 -- AC Thermostat with Fan Coil  
WIRING DIAGRAM NOTES:  
. Furnace must control its own second -- stage heat operation via furnace control algorithm. Refer to indoor equipment Installation  
Intructions for proper setup.  
1
2
3
. See Option 5 information to convert HP thermostats to AC thermostat operation.  
. As an option, lock the furnace into low -- heat operation and let O/B control high -- heat operation. Refer to indoor equipment Installation  
Instructions for proper setup.  
4
5
6
7
8
9
. O/B can control second -- stage heat. Refer to indoor equipment Installation Instructions for proper setup.  
. Refer to outdoor equipment Installation Instructions for latent kit requirements (if any).  
. Terminals marked with * may not be present on equipment.  
. O/B energizes reversing valve in cooling or heating. See Option 10.  
. Refer to outdoor equipment Installation Instructions for proper setup.  
. If system is wired per diagram, the ACRDJ (jumper) on furnace control board should be removed to allow thermostat to control  
outdoor unit staging.  
1
0. Refer to fan coil Installation Instructions for proper wiring.  
11. If batteries are installed, C (common wire) is not required between indoor unit and thermostat.  
6
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OPERATIONAL INFORMATION  
Five-minute Compressor Timeguard  
The cycle timer limits the number of times the heating or cooling equipment can be energized in one hour. If option 1 is set to a value of 1 or  
, the equipment will be allowed to energize up to six times per hour. If option 1 s set to 3 or greater, then the equipment will be allowed to  
2
energize up to four times per hour. This timer is defeated for 1 cycle when the desired temperature is manually changed. It can also be  
defeated for 1 cycle by simultaneously pressing the FAN button and the INCREASE TEMPERATURE button.  
Cycle Timer  
This timer prevents the start of a heating or cooling cycle until at least 15 minutes after the last start of the same cycle. Its function is to assure  
that equipment is not cycled more than 4 times per hr. This timer is defeated for 1 cycle when the desired temperature is manually changed. It  
can also be defeated for 1 cycle by simultaneously pressing the FAN mode button and the INCREASE TEMPERATURE button.  
Staging Timer  
In multistage heating or cooling, this timer prevents any higher stage from turning on until the preceding stage has been on for 15 minutes.  
This timer is defeated if the temperature error is greater than 5_F/3_C (usually due to a large change in desired temperature).  
Three-minute Minimum On Time  
In normal operation, when a stage turns on, it will not turn off for a minimum of 3 minutes.  
Heat/Cool Setpoints (Desired Temperatures)  
A minimum difference of 2_ is enforced between heating and cooling setpoints. This is done by allowing one setting to “push” the other, to  
maintain this difference.  
Auto Changeover  
When the auto changeover mode is selected, a change from heat to cool (or vice versa) will not occur until an opposite mode demand has  
existed for 20 minutes. If the setpoint is changed, the 20 minute requirement is deleted. Auto mode may be disabled.  
Emergency Heat Mode  
When thermostat is configured as a heat pump and emergency heat mode is selected, all Y signals are locked out and W becomes energized  
upon a call for heat.  
Heat On and Cool On Icons  
When a heating or cooling demand exists, the HEAT ON or COOL ON icon will either remain on or flash. If flashing, the equipment is  
temporarily prevented from turning on by one of the timers (see above). While the icon remains on without flashing, the equipment is on.  
Power On Check  
When AC power is first applied, all segments of the display are turned on for a few seconds. Following this, the temperature display indicates  
the model/configuration via the following 2 digit code: AC—1 -- speed air conditioner, HP—1 -- speed heat pump.  
Error Codes  
-- -- — If the thermostat cannot properly read room temperature, the display will indicate -- -- (2 dashes) and all outputs (except the fan if on)  
will turn off. This is to prevent operation of the equipment if the thermostat has failed.  
E2 — If the AC line voltage drops below a minimum (brownout) level, all outputs are turned off and the display indicates E2. This condition  
will remain for 15 sec after proper line voltage is restored. If the AC line voltage disappears completely, the display will immediately go  
blank.  
Thermostat Troubleshooting  
SYMPTOM  
WHAT TO CHECK  
Blank LCD  
Check for 24vac between R and C at terminal connections or battery.  
Temperature sensor reading out of range. Check sensor for damage. If  
recycling power does not clear display, thermostat should be replaced.  
--- --- ” ( 2 d a sh e s) o n t e m p e r a t u r e d isp la y  
Brownout condition or too low of voltage to thermostat. Double check  
wiring and check for 24vac between R and C. E2 will clear 15 sec after  
proper voltage is restored.  
E2” on temperature display  
After the selected number of hour of blower operation “FILTER” will display  
on LCD. This is to remind the homeowner to “check” the filter. Press  
RESET FILTER button to clear display and reset timer to 0.  
SERVICE FILTER” on temperature display  
Select COOL mode. Set desired temperature to 10˚F below room temper-  
ature. Simultaneously press FAN and INCREASE TEMPERATURE buttons  
to defeat timers. Check for COOL ON icon and 24vac at Y (first --- stage)  
terminal. If present, thermostat is OK and problem is with equipment or  
wiring. If not present, replace thermostat.  
Cooling will not come on  
Heating will not come on  
Select HEAT mode. Set desired temperature to 10˚F/6˚C above room  
temperature. Simultaneously press FAN and INCREASE TEMPERATURE  
buttons to defeat timers. Check for HEAT ON and 24vac at Y (first --- stage)  
terminal (with heat pump) or W (with air conditioner) terminal. If present,  
thermostat is OK and problem is with equipment or wiring. If not present,  
replace thermostat.  
7
href="
E2008 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231  
Printed in China  
Edition Date: 03/08  
Catalog No. IIT2SNAC --- 0 1  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Replaces: NEW  
8
href="
T2SNAC01, T2SNHP01  
NON -- PROGRAMMABLE THERMOSTAT  
Homeowner’s Guide  
SERVICE FILTER Indicator  
lets you know it is time to clean or replace your system’s air filter.  
Room Temperature Display  
shows current room temperature.  
COOL ON Indicator  
is displayed when the cooling equipment is operating.  
HEAT ON Indicator  
is displayed when the heating equipment is operating.  
RESET FILTER Button  
restarts the timer that calculates the next air filter change or  
cleaning.  
AUXILIARY HEAT Indicator  
is displayed when a heat pump system is operating with auxiliary  
heat air filter.  
SETTING & OPERATING THE THERMOSTAT  
Setting your indoor temperature set points  
A08147  
1
. Press the UP or DOWN button.  
CONGRATULATIONS  
INTELLIGENT, EASY TO USE  
The LCD readout will be illuminated and the heating or  
cooling temperature set point will be displayed, but will not  
change. Next to the temperature display, HEAT or COOL  
indicates which temperature set point is being displayed.  
. Continue to press the UP or DOWN buttons until your  
desired heating or cooling temperature set point is  
displayed.  
Congratulations on your purchase of a new Bryant thermostat.  
Your new thermostat combines computer like intelligence with  
extremely simple operation in an elegant package. Designed to  
maximize performance, your Bryant thermostat provides reliable,  
accurate temperature control while blending into any home’s decor.  
As you read on, you’ll quickly see how easy it is to set up and  
operate your new thermostat and enjoy the comfort of your home.  
2
3
4
. Press the MODE button to select the second temperature  
setting (either HEAT or COOL).  
. Press the UP or DOWN buttons until your second desired  
temperature set point is displayed.  
NOTE: Your COOL setting must be at least 2_ higher than your  
HEAT setting. Your thermostat will automatically change your  
previously set temperature to maintain that 2_ difference.  
COMFORT AT YOUR COMMAND  
Bryant has met the needs of homeowners nationwide with their  
non -- programmable thermostat. Controlling your heating and  
cooling system at the touch of a button, this powerful device helps  
deliver comfort year round.  
Setting fan operation  
MAKING LIFE EASIER  
1
. Press the FAN button to switch between ON and AUTO fan  
se ttings.  
FAN on indicator will be displayed on LCD. When the ON  
mode is selected, the fan runs continuously for improved air  
circulation.  
When the AUTO mode is selected, the fan runs only as  
needed to maintain your desired indoor temperature. FAN  
on indicator is not displayed on LCD.  
Take a few minutes to review the features and functions listed at  
the right. Bryant gives you control over your comfort with simple  
instructions, responsive push buttons and an easy -- to -- read backlit  
display. Once set, this thermostat reliably monitors indoor  
temperature and responsively meets your comfort demands.  
Up and Down Buttons  
increase or decrease the desired temperature setting.  
FAN Button  
Setting mode operation  
chooses between CONTINUOUS FAN and AUTO FAN operation.  
MODE Button  
1. Press the MODE button.  
2. On the LCD readout, the words OFF, HEAT, COOL, and  
AUTO will rotate as the MODE button is pressed.  
selects between OFF, HEAT, COOL, AUTO, and OFF operation.  
Heat pump thermostat models also include an EMERGENCY  
HEAT mode.  
If you have a heat pump, the LCD readout will show OFF,  
HEAT, COOL, AUTO, and EMERGENCY HEAT  
(EHEAT).  
LOW BATTERY Indicator  
NOTE: In AUTO mode, your system will heat OR cool as needed  
to reach your desired temperature. AUTO mode may be disabled.  
will light when batteries (if installed) need to be replaced.  
href="
NOTE: If 2 dashes ( -- -- ) appear, your thermostat does not include  
the outdoor temperature function or the function is not working  
properly. Check with your dealer if you are unsure.  
NOTE: This indicator does not reflect a problem with your  
system.  
You have a system error message...  
Service filter feature  
The temperature sensor failure indicator sends a “ -- -- ” reading to the  
LCD display. This means your thermostat’s temperature sensor is  
no longer able to measure temperatures. You will need to contact  
your dealer to repair the problem.  
Your thermostat reminds you when it’s time to change or clean  
your filter by displaying the SERVICE FILTER indicator.  
1
. Press the RESET FILTER button after you have changed or  
cleaned your filter to restart the timer.  
An E2 reading on the LCD display means there is not enough  
voltage for the system to operate. Contact your dealer for further  
information.  
If the outdoor air temperature sensor is absent, the outdoor  
temperature reading will be “ -- -- ”.  
The batteries are low...  
If the batteries are low, the display will indicate a low battery signal  
on the thermostat. Replace the batteries with two AA alkaline  
batteries.  
NOTE: If the product is hard -- wired by the installer, the batteries  
will never have to be replaced.  
A08149  
COMMON TERMS  
Fig. 1 -- Battery Change  
Auxiliary Heat  
Most heat pump systems require a supplemental heating source,  
called auxiliary heat, to maintain your comfort when outdoor  
temperatures fall significantly. Your thermostat lets you know  
when your home is being warmed with supplemental heat.  
Battery change out  
If the installation requires the usage of batteries, the batteries will  
require replacement every 12 months.  
1
2
. Grasp the front housing of the thermostat along the left side.  
Service Filter  
. Carefully pull the front housing away from the back mount-  
ing base.  
Your system’s air filter will require regular cleaning to reduce the  
dirt and dust in the system and your indoor air. The SERVICE  
FILTER indicator lets you know when it’s time to clean the filter.  
3
. Find the two AA batteries along the bottom in back of the  
front housing.  
Fan  
4
5
. Remove the batteries from the back of the front housing.  
Your system’s fan can run continuously or only as called for during  
heating or cooling. Continuous operation helps with air circulation  
and cleaning. Automatic operation provides energy savings. Press  
the FAN button to make your choice.  
. Install two new AA Alkaline batteries following the + / --  
polarity markings.  
6
7
. Carefully align the front housing with the plastic guides on  
the right side of the back mounting base.  
Mode  
. Carefully swing the left towards the back mounting base  
until it snaps into place.  
Mode refers to the type of operation your system is set up to  
perform. Mode settings include: OFF, HEAT, COOL, and AUTO.  
Heat pump systems also include EMERGENCY HEAT (EHEAT).  
NOTE: If installation is hard -- wired, batteries are not required or  
will not need replacement.  
Reset Filter  
AUTO CHANGEOVER  
The reset filter function turns off the SERVICE FILTER indicator  
and restarts the system. Press the RESET FILTER button after  
you’ve cleaned and replaced the system’s air filter.  
Your thermostat provides complete, automatic control over heating  
and cooling with auto changeover. Auto changeover means your  
system will automatically heat or cool as needed to maintain your  
temperature set points.  
Auto changeover makes life easier because you no longer have to  
manually switch the thermostat between heating or cooling  
operation. Just set your heating and cooling set points and let the  
system do the rest!  
Set Point  
The heating and cooling temperature set points you wish the  
system to maintain and have entered into the thermostat. The actual  
room temperature will automatically be displayed, but you can  
check the desired temperature by pressing either the UP or DOWN  
button. While the SET TEMP indicator is lit, press the MODE  
button to display the desired temperature set points for the other  
mode.  
NOTE: If auto changeover is not necessary in your area of the  
country, your installer may disable the AUTO mode feature.  
Temperature Sensor  
WHAT IF...  
The AUXILIARY HEAT indicator is displayed...  
The temperature sensor measures the current indoor or outdoor  
temperatures which are displayed on the thermostat.  
The AUX HEAT indicator appears on the heat pump version of the  
thermostat only. It is displayed when your system is operating on  
auxiliary heat.  
Up and Down Buttons  
These buttons are used to set your desired temperature set points.  
This thermostat includes a five -- year limited warranty. For detailed  
warranty information, please refer to the All Product Limited  
Warranty Card included in your information packet. This  
thermostat is also eligible for manufacturer’s extended system  
warranties. Ask your dealer for details on extended warranties for  
longer -- term protection.  
NOTE: This indicator does not reflect a problem with your  
system.  
The SERVICE FILTER indicator is displayed...  
The SERVICE FILTER indicator tells you when to clean or replace  
your air filter. Press the RESET FILTER button after cleaning or  
replacing the filter to turn off the indicator and reset the system.  
E2008 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231  
Printed in China  
Edition Date: 03/08  
Catalog No. IIT2SNAC --- 0 1  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Replaces: NEW  
2

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