Trane 340 Thermostat User Manual

FEATURES

The Trane Co. sells comfort systems.

Comfort is achieved through matching the

correct equipment and controls. This

thermostat is designed to provide the

maximum comfort for your needs.

Some of the basic offerings are:

HOLD KEY OVERRIDES PROGRAM

OR HOLDS TEMPERATURE INDEFINITELY.

INCREASE KEY:

INCREASE

SETPOINT,

OR ADVANCE

TO NEXT STEP.

LCD DISPLAY

SELECT KEY:

TO SET TIME

AND DAY.

Hold

Select

•

Program up to four time periods and

temperature settings to complement

your lifestyle.

TUE

DECREASE KEY:

DECREASE

TEMPERATURE

OR SCROLL

THROUGH

INSTALLER

SETUP OPTIONS.

•

Set different schedules for weekdays

and weekends.

FAN

Auto On

SYSTEM

Cool Off Heat

M18527

Programs are permanently held in

memory in the event of a power failure.

SYSTEM SWITCH

FAN SWITCH

•

Indefinite temperature hold.

Preprogrammed for your convenience.

Pub. No. 22-5183-01

69-1228—1

Your thermostat displays the

current day, time, period,

temperature and system ( for

CURRENT TEMPERATURE DISPLAYS.

HEATING OR COOLING SETPOINT

DISPLAYS DURING PROGRAMMING.

SET DISPLAYS WHILE

SETTING THE CLOCK.

CURRENT TIME DISPLAYS

IN NORMAL MODE.

PERIOD START TIME DISPLAYS

IN PROGRAMMING MODE.

TEMPORARY DISPLAYS

DURING TEMPORARY

TEMPERATURE HOLD.

heating and

for cooling) in

normal mode. In programming

mode, only the setting or

settings being programmed

display. For example “SAT SUN”

(Saturday Sunday) displays

while programming the

CURRENT DAY DISPLAYS IN

NORMAL MODE. MONDAY

THROUGH FRIDAY DISPLAY

DURING WEEKDAY

PROGRAMMING MODE.

SATURDAY AND SUNDAY

DISPLAY DURING WEEKEND

PROGRAMMING MODE.

SET TEMPORARY

weekend schedule.

DURING NORMAL MODE, THE CURRENT PERIOD

DISPLAYS. DURING PROGRAMMING, THE PERIOD BEING

PROGRAMMED DISPLAYS (WAKE, LEAVE, RETURN OR SLEEP).

FLAME DISPLAYS DURING HEATING OR WHILE

PROGRAMMING HEATING SETPOINT; SNOWFLAKE DISPLAYS

DURING COOLING OR WHILE PROGRAMMING COOLING SETPOINT.

M18560

Pub. No. 22-5183-01

69-1228—1

SET

PROGRAMMING YOUR

THERMOSTAT

M12591A

CLOCK

Setting the Current Day and Time

To set or reset the current day and time,

follow these instructions:

Note:

While setting the current time, SET

displays.

2. To set Day of Week, press Select

again. Press ▲ or ▲ to set current day.

IMPORTANT

Always press the keys with your

fingertip or similar blunt tool. Sharp

objects like pen and pencil points will

damage the keyboard.

SET

M18565

Note:

To exit and save the programming

mode at any time, press Hold.

3. Press Hold to exit programming mode.

1. To set Current Time, press Select twice.

Press ▲ or ▲ to set current time.

Pub. No. 22-5183-01

69-1228—1

Organizing Your Schedule

Your thermostat can be set for four time periods (Wake, Leave, Return, and Sleep) for the

weekday schedule (Monday through Friday), and four time periods for the weekend schedule

(Saturday and Sunday). Without additional programming, your thermostat follows the same

preprogrammed schedule for both weekdays and weekends (see Table 1).

WAKE

Choose the time you want your heating or cooling system to start to

reach your comfort temperature after the SLEEP period.

How? Consider the time required to reach your comfort level. Adjust the

Wake time to earlier when you know it will take the system longer to

reach your comfort temperature.

LEAVE

Choose the time you want your heating or cooling system to start an

energy-saving mode while you are away at work or school.

How? Set the Leave temperature lower during heating season, and

higher during cooling season.

Pub. No. 22-5183-01

69-1228—1

RETURN

SLEEP

Choose the time you want your heating or cooling system to start to

reach your comfort temperature after the energy-savings LEAVE

period.

How? Consider the time required to reach your comfort level. Adjust the

Return time to earlier when you know it will take the system longer to

reach your comfort temperature.

Set the time you want your heating or cooling system to start to reach

your Sleep temperature.

To use this period as an energy-savings mode, set the temperature

lower during heating season, and higher during cooling season.

Pub. No. 22-5183-01

69-1228—1

The preprogrammed schedule is shown in Table 1. You may keep this schedule or organize your

own. Schedules are adjustable as often as you wish. If you decide to keep this schedule, no

further programming is necessary.

Table 1. Preprogrammed Weekday and Weekend Schedule.

Period

Time

6:00 AM

Heat Setpoint

70°F (21°C)

Cool Setpoint

78°F (26°C)

Wake

Leave

Return

Sleep

8:00 AM

5:00 PM

10:00 PM

62°F (17°C)

70°F (21°C)

62°F (17°C)

85°F (29°C)

78°F (26°C)

75°F (24°C)

To begin programming your weekday and weekend schedules, fill in Tables 2 and 3.

Pub. No. 22-5183-01

69-1228—1

Customizing Your Weekday Schedule

Use Table 2 to organize your weekday schedule. Fill in the times and temperatures you want to

program. The names of the four periods are filled in for you.

Table 2. Your Weekday Schedule.

Heating

Temperature

Cooling

Temperature

Period

Start Time

Wake

Leave

Return

Sleep

Pub. No. 22-5183-01

69-1228—1

Customizing Your Weekend Schedule

Use Table 3 to organize your weekend schedule. Fill in the times and temperatures you want to

program. The names of the four periods are filled in for you.

Table 3. Your Weekend Schedule.

Heating

Temperature

Cooling

Temperature

Period

Start Time

Wake

Leave

Return

Sleep

Note: Start Time is the time your thermostat begins to reach the desired temperature.

Note: The thermostat cannot be set higher than 99°F (37°C) or lower than 50°F (10°C).

Pub. No. 22-5183-01

69-1228—1

Setting the Weekday Program

IMPORTANT

Hold

Select

Always press the keys with your

fingertip or similar blunt tool. Sharp

objects like pen and pencil points will

damage the keyboard.

TUE

1. Slide the SYSTEM switch to the setting

you want to program (Heat or Cool).

FAN

Auto On

SYSTEM

Cool Off Heat

Throughout programming, the thermo-

stat displays a flame (heating) or

snowflake (cooling) to help you

identify which mode you are program-

ming. At the end of Setting the Week-

end Program, you are prompted to

return to this step to program the

opposite mode. Example shows Cool

setting.

M18545

Note: To exit the programming mode at any

time, press Hold (the thermostat saves

your changes).

Pub. No. 22-5183-01

69-1228—1

2. Set weekday Wake time and tempera-

ture.

SET

a. Press Select four times. Press ▲

or ▲ to set Wake time.

SET

M18564

Note: When setting the Weekday Program,

the days MON TUE WED THU FRI

display.

M18570

3. Set weekday Leave time and tempera-

ture.

Note: Schedule times are programmable in

increments of 15 minutes. For each

press, the time increases or decreases

by 15 minutes.

a. Press Select. Press ▲ or ▲ to

set Leave time.

SET

b. Press Select. Press ▲ or ▲ to

set Wake temperature.

M18566

Pub. No. 22-5183-01

69-1228—1

b. Press Select. Press ▲ or ▲ to

set Leave temperature.

b. Press Select. Press ▲ or ▲ to

set Return temperature.

SET

M18561

M18562

5. Set weekday Sleep time and tempera-

ture.

4. Set weekday Return time and tempera-

ture.

a. Press Select. Press ▲ or ▲ to

set Sleep time.

a. Press Select. Press ▲ or ▲ to

set Return time.

SET

M18567

M18568

Pub. No. 22-5183-01

69-1228—1

b. Press Select. Press ▲ or ▲ to

set Sleep temperature.

Setting the Weekend Program

SET

Note: For initial programming, you must set

the weekday schedule as shown in

Setting the Weekday Program before

you can access weekend program-

ming. If your weekday is already

programmed, you can access weekend

programming by pressing Select 12

times.

M18563

IMPORTANT:

Before pressing another key,

continue with Setting the Weekend

Program.

1. Set weekend Wake time and tempera-

ture.

a. Press Select. Press ▲ or ▲ to

set Wake time.

SET

M18569

Pub. No. 22-5183-01

69-1228—1

Example shows Cool setting.

b. Press Select. Press ▲ or ▲ to

set Wake temperature.

b. Press Select. Press ▲ or ▲ to

set Leave temperature.

SET

M18551

M18549

3. Set weekend Return time and tempera-

ture.

Note:

When setting the Weekend Program,

the days SAT SUN display.

a. Press Select. Press ▲ or ▲ to

set Return time.

2. Set weekend Leave time and tempera-

ture.

SET

a. Press Select. Press ▲ or ▲ to

set Leave time.

SET

M18552

Pub. No. 22-5183-01

M18550

69-1228—1

b. Press Select. Press ▲ or ▲ to

set Return temperature.

b. Press Select. Press ▲ or ▲ to

set Sleep temperature.

SET

M18553

M18555

5. Press Select. End displays.

4. Set weekend Sleep time and tempera-

ture.

SET

a. Press Select. Press ▲ or ▲ to

set Sleep time.

SET

M18556

After five seconds, your thermostat displays

the current day, time and temperature.

M18554

Pub. No. 22-5183-01

69-1228—1

Note: The temporary temperature setting

remains in effect until the next program

period. To cancel, press Hold twice

and wait five seconds.

M18557

Indefinite Temperature Hold

The Hold key allows you to hold a tempera-

ture indefinitely. When Hold is active, Hld

displays continuously.

6. Return to Step 1., Setting the Week-

day Program to program the opposite

mode,

(heating) or

(cooling).

Your weekday and weekend schedules are

now programmed.

1. Press Hold.

2. Press ▲ or ▲ key to set indefinite

temperature setting.

Temporary Temperature Hold

1. Press ▲ or ▲ key twice to set a

temporary temperature.

TEMPORARY

M18559

Pub. No. 22-5183-01

M18558

69-1228—1

3. To cancel, press Hold and wait five

seconds.

Hold

Select

System and Fan

Use the SYSTEM and FAN switches to

change the settings.

TUE

Note: When the TAYSTAT 350 is used with

two-stage heating equipment, there

is an airflow change when the stage

change occurs.

FAN

Auto On

SYSTEM

Cool Off Heat

SYSTEM SWITCH

M18546

SYSTEM settings control the thermostat

operation as follows:

Cool: The thermostat controls the cooling.

Off: Both the heating and cooling are off.

Heat: The thermostat controls the heating.

System Setting

To select the desired system setting, slide the

SYSTEM switch in the lower right corner of

the thermostat.

Pub. No. 22-5183-01

69-1228—1

Heat and Cool Indicators

Fan Setting

Indicates a call for heating.

Indicates a call for cooling.

To select the desired fan setting, slide the

FAN switch in the lower left corner of the

thermostat.

Hold

Select

TUE

M18548

Note: In the programming mode, the

and indicate the system setting.

FAN

Auto On

SYSTEM

Cool Off Heat

FAN SWITCH

M18547

FAN settings control the system fan as follows:

Auto: Fan operates with equipment.

On: Fan operates continuously.

Pub. No. 22-5183-01

69-1228—1

Minimum Off-Timing

CAUTION

Equipment Damage Hazard.

Your thermostat comes equipped with a

minimum off-timer. At certain times during

cooling, the system will not start up again for

at least five minutes after it turns off (com-

pressor is off and can’t be heard). This occurs

when you change the SYSTEM switch

Can cause permanent damage to

the compressor or other equipment.

To avoid possible equipment damage,

do not operate cooling when outside

temperature is below 50°F (10°C).

See equipment manufacturer instruc-

tions. To avoid possible compressor

damage, allow the compressor to

remain off for five minutes before

restarting.

position while the compressor is off or when

you change the temperature setting, causing

the compressor to turn off. The minimum off-

timer is also triggered during power interrup-

tion and power restoration. You will know the

minimum off time is in effect by a flashing

on the display.

Pub. No. 22-5183-01

69-1228—1

TROUBLESHOOTING GUIDE

Symptom

Possible Cause

Action

Display will not

come on.

Thermostat is not

being powered.

Check if the thermostat is mounted and

latched on the wallplate–mount and latch the

thermostat on the wallplate.

Check if the circuit breaker is tripped–reset

the circuit breaker.

Check if the fuse is blown–replace the fuse.

Check if the system switch is in the Off

position–set to Heat or Cool.

Temperature

The upper or lower

temperature limits

were reached.

Check that the temperature setpoints are

within range:

Heating: 50° to 99° F (10° to 37° C)

Cooling: 50° to 99° F (10° to 37° C).

settings will not

change (Example:

cannot set the

heating higher or the

cooling lower).

(Contiuned)

Pub. No. 22-5183-01

69-1228—1

Troubleshooting (Contiuned)

Symptom

Possible Cause

Action

Heating will not

come on.

No power to the Check that the setpoint is above room

thermostat. temperature–reset temperature or wait for

System selection is room temperature to fall.

not set to Heat.

Heating setpoint is

below room

Check if the circuit breaker is tripped–reset

the circuit breaker.

Check if the fuse is blown–replace the fuse.

Check if the system switch at the equipment

is in the Off position–set to Heat position.

Wait five minutes for the system to respond.

temperature.

Cooling will not

come on.

No power to the Check that the setpoint is below room

thermostat. temperature–reset temperature or wait for

System selection is room temperature to rise.

not set to Cool.

Cooling setpoint is

above room

Check if the circuit breaker is tripped–reset

the circuit breaker.

Check if the fuse is blown–replace the fuse.

Check if the system switch at the equipment

is in the Off position–set to Cool position.

Wait five minutes for the system to respond.

temperature.

Pub. No. 22-5183-01

69-1228—1

Troubleshooting (Contiuned)

Symptom

Possible Cause

Action

System on indicator Heating/cooling

is lit, but equipment turns on

Wait a minute after seeing the flame or

snowflake and then check the registers.

and

no warm or cool air

is coming from the

registers.

the fan when the

equipment has

reached the

setpoint.

System on indicator Minimum off timer is Wait five minutes until the minimum off timer

or is flashing in effect. is complete.

Pub. No. 22-5183-01

69-1228—1

LIMITED WARRANTY

Low Voltage Room Thermostats

This warranty is extended by American Standard Inc., to the original purchaser and to any

succeeding owner of the real property to which the Thermostat is originally affixed, and applies

to products purchased and retained for use within the U.S.A. and Canada.

If any part of your Thermostat fails because of a manufacturing defect within one year from the

date of the original purchase, Warrantor will furnish without charge a new thermostat. Any local

transportation, related service labor and diagnosis calls are not included.

This warranty does not cover failure of your Thermostat if it is damaged while in your posses-

sion or if the failure is caused by unreasonable use. In no event shall Warrantor be liable for

incidental or consequential damages. In no event shall any implied warranty of merchandise

or fitness for use exceed the term of the limited warranty stated above.

Some states do not allow limitations on how long an implied warranty lasts or do not allow the

exclusion or limitation of incidental or consequential damages, so the above limitation may not

apply to you. This warranty gives you specific legal rights, and you may also have other rights

which vary from state to state.

Pub. No. 22-5183-01

69-1228—1

Parts will be provided by our factory organization or an authorized service organization in your area. All you

need to do is look us up in the Yellow Pages or write to the address given below. If you wish further help or

information concerning this warranty, contact:

American Standard Inc.

Troup Highway

Tyler, TX 75711-9010

Attention: Manager, After Sales Support

CUSTOMER ASSISTANCE

If, after reading this guide, you have any questions concerning the operation of your thermostat, please call

the Thermostat Customer Assistance Helpline at 1-877-880-3381, Monday-Friday, 7:00 am-5:30 pm, Central

time.

For service, contact your local heating and cooling contractor.

American Standard Inc.

Pub. No. 22-5183-01

® U.S. Registered Trademark

Troup Highway

Tyler, TX 75711-9010

69-1228—1 Rev. 9-00 J.H. Printed in Mexico