Bryant T2SNAC01 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.

Table 1 – Model Selection and Wiring Diagram Chart

AIR CONDITIONER

HEAT PUMP

1 Speed

OUTDOOR UNIT

Speed

--- Stage Furnace

Model AC See Fig.

---

Model AC 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.

Install Thermostat

CAUTION

WARNING

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.

. Push any excess wire into wall and against mounting base.

Seal hole in wall to prevent air leaks. Leaks can affect

operation.

. 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.

. 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.

. 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.

. 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

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.

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

. 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.

. 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.

. 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.

. Press MODE button once. The SET icon will come on. The

display now shows Option 04 setting.

To Adjust:

. Use up and down buttons to move between available

Option 04 choices of ON or OF. Factory default is OF.

. 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.

. 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:

. 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

(

. 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:

. 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.

. 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:

. 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.

. Enter configuration mode (if not already there).

. Use up and down buttons to display Option 07. The SET

icon should be off.

. 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:

. 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:

. Enter configuration mode (if not already there).

. Use up and down buttons to display Option 18. The SET

icon should be off.

. Use up and down buttons to move between available

Option 10 choices of H (heat) or C (cool). Factory default is

. Press MODE button once. The SET icon will come on. The

display now shows Option 18 setting.

. 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

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.

To Select:

. Enter configuration mode (if not already there).

. Use up and down buttons to display Option 19. The SET

icon should be off.

. Enter configuration mode (if not already there).

. Use up and down buttons to display Option 13. The SET

icon should be off.

. 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.

. 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.

. 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:

. Enter configuration mode (if not already there).

. Use up and down buttons to display Option 15. The SET

icon should be off.

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.

. Enter configuration mode (if not already there).

. Use up and down buttons to display Option 21. The SET

icon should be off.

. 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.

. Press MODE button once. The SET icon will come on. The

display now shows Option 21 setting.

. 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.)

. 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

. 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.

Table 2 – Non -- Programmable -- C Thermostat Quick Reference

THERMOSTAT OUTPUT

TSTAT

Model

Outdoor

Unit

Option

24V

Hot

Heat

Stage 1

Heat

Stage 2

Cool

Stage 1

Reversing

Valve

Common

Fan

T2SNAC01

T2SNHP01

N/A

OFF

N/A

O/B

N/A

O/B

N/A

Thermostat

Heat

Furnace

Air Conditioner

Thermostat

Furnace

Air Conditioner

Heat

Cool

Fan

Y/Y2

4VAC

Cool

Fan

4VAC

Common

HUM

Common

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

Thermostat

Heat

Fan Coil

Heat Pump

Thermostat

Heat

Fan Coil

Air Conditioner

O/B

Cool

Fan

Cool

Fan

4VAC

Common

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.

. 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.

. 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.

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.

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

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.

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

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

. 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.

. 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

. 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.

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.

. 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.

. 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.

. Find the two AA batteries along the bottom in back of the

front housing.

Fan

. 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.

. 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.

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