American Standard 340 User Manual

Programmable Thermostat

ASYSTAT 340

OWNER’S GUIDE

Pub. No. 12-5026-01

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FEATURES

:

S.

9

American Standard 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:

• Program up to four time periods and
temperature settings to complement
your lifestyle.

• Set different schedules for weekdays
and weekends.

• Programs are permanently held in
memory in the event of a power failure.

• Indefinite temperature hold.

HOLD KEY OVERRIDES PROGRAM
OR HOLDS TEMPERATURE INDEFINITELY.

LCD DISPLAY

PM

E

U

T

FAN SYSTEM

Auto On

FAN SWITCH

Hold Select

Cool Off Heat

INCREASE KEY:
INCREASE
SETPOINT,
OR ADVANCE
TO NEXT STEP.

SELECT KEY:
TO SET TIME
AND DAY.

DECREASE KEY
DECREASE
TEMPERATURE
OR SCROLL
THROUGH
INSTALLER
SETUP OPTION

SYSTEM SWITCH

M2053

• Preprogrammed for your convenience.

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Your thermostat displays the

D
D
P

I
I

P
D

current day, time, period,
temperature and system ( for
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
weekend schedule.

SET DISPLAYS WHILE
SETTING THE CLOCK.

CURRENT TIME DISPLAYS

N NORMAL MODE.

PERIOD START TIME DISPLAYS

N PROGRAMMING MODE.

CURRENT DAY DISPLAYS IN
NORMAL MODE. MONDAY
THROUGH FRIDAY DISPLAY
DURING WEEKDAY
PROGRAMMING MODE.

SATURDAY AND SUNDAY

DISPLAY DURING WEEKEND
PROGRAMMING MODE.

URING NORMAL MODE, THE CURRENT PERIOD
ISPLAYS. DURING PROGRAMMING, THE PERIOD BEING
ROGRAMMED DISPLAYS (WAKE, LEAVE, RETURN OR SLEEP).

FLAME DISPLAYS DURING HEATING OR WHILE

ROGRAMMING HEATING SETPOINT; SNOWFLAKE DISPLAYS
URING COOLING OR WHILE PROGRAMMING COOLING SETPOINT.

CURRENT TEMPERATURE DISPLAYS.
HEATING OR COOLING SETPOINT
DISPLAYS DURING PROGRAMMING.

TEMPORARY DISPLAYS
DURING TEMPORARY
TEMPERATURE HOLD.

TEMPORARY

SET

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M18560

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PROGRAMMING YOUR

A

5

THERMOSTAT

SET

PM

CLOCK

Setting the Current Day and Time

To set or reset the current day and time,
follow these instructions:

IMPORTANT

Always press the keys with your
fingertip or similar blunt tool. Sharp
objects like pen and pencil points will
damage the keyboard.

Note: To exit and save the time and day

setting at any time, press Hold.

1. To set Current Time, press Select twice.

Press ▲ or ▼ to set current time.

M12591

Note: While setting the current time, SET

displays.

2. To set Day of Week, press Select

again. Press ▲ or ▼ to set current day.

SET

M1856

3. Press Hold to exit the day and time
mode.

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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.

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RETURN 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.

SLEEP 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.

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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 Heat Setpoint Cool Setpoint

Wake 6:00 AM 70°F (21°C) 78 °F (26 °C)

Leave 8:00 AM 62°F (17 °C) 85°F (29 °C)

Return 5:00 PM 70°F (21°C) 78 °F (26 °C)

Sleep 10:00 PM 62°F (17°C) 75 °F (24 °C)

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

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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.

Wake

Leave

Return

Sleep

Period

Start Time

Temperature

8

Heating

Cooling

Temperature

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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.

Period

Start Time

Heating

Temperature

Cooling

Temperature

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).

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Setting the Weekday Program

IMPORTANT

Always press the keys with your
fingertip or similar blunt tool. Sharp
objects like pen and pencil points will
damage the keyboard.

1. Slide the SYSTEM switch to the setting
you want to program (Heat or Cool).

Throughout programming, the thermo­stat displays a flame (heating) or
snowflake (cooling) to help you
identify which mode you are program­ming. At the end of Setting the Week­end Program, you are prompted to
return to this step to program the
opposite mode. Example shows Cool
setting.

PM

E

U

T

FAN SYSTEM

Auto On

Hold Select

Cool Off Heat

Note: To exit the programming mode at any

time, press Hold (the thermostat saves
your changes).

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2. Set weekday Wake time and tempera-

4

0

6

ture.

a. Press Select four times. Press ▲

or ▼ to set Wake time.

SET

M1857

Note: Schedule times are programmable in

increments of 15 minutes. For each
press, the time increases or decreases
by 15 minutes.

b. Press Select. Press ▲ or ▼ to

set Wake temperature.

SET

M1856

Note: When setting the Weekday Program,

the days MON TUE WED THU FRI
display.

3. Set weekday Leave time and tempera­ture.

a. Press Select. Press ▲ or ▼ to

set Leave time.

SET

M1856

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b. Press Select. Press ▲ or ▼ to

1

2

7

8

set Leave temperature.

SET

b. Press Select. Press ▲ or ▼ to

set Return temperature.

SET

M1856

4. Set weekday Return time and tempera­ture.

a. Press Select. Press ▲ or ▼ to

set Return time.

SET

M1856

M1856

5. Set weekday Sleep time and tempera­ture.

a. Press Select. Press ▲ or ▼ to

set Sleep time.

SET

M1856

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b. Press Select. Press ▲ or ▼ to

9

3

SET

IMPORTANT:

Before pressing another key,
continue with Setting the Weekend
Program.

set Sleep temperature.

M1856

Setting the Weekend Program

Note: For initial programming, you must set

the weekday schedule as shown in
Setting the Weekday Program before
you can access weekend program­ming. If your weekday is already
programmed, you can access weekend
programming by pressing Select 12
times.

1. Set weekend Wake time and tempera­ture.

a. Press Select. Press ▲ or ▼ to

set Wake time.

SET

M1856

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Example shows Cool setting.

9

0

1

2

b. Press Select. Press ▲ or ▼ to

set Wake temperature.

SET

M1854

Note: When setting the Weekend Program,

the days SAT SUN display.

2. Set weekend Leave time and tempera­ture.

a. Press Select. Press ▲ or ▼ to

set Leave time.

SET

b. Press Select. Press ▲ or ▼ to

set Leave temperature.

SET

M1855

3. Set weekend Return time and tempera­ture.

a. Press Select. Press ▲ or ▼ to

set Return time.

SET

M1855

M1855

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b. Press Select. Press ▲ or ▼ to

3

4

5

6

set Return temperature.

SET

b. Press Select. Press ▲ or ▼ to

set Sleep temperature.

SET

M1855

4. Set weekend Sleep time and tempera­ture.

a. Press Select. Press ▲ or ▼ to

set Sleep time.

SET

M1855

M1855

5. Press Select. End displays.

SET

M1855

After five seconds, your thermostat displays
the current day, time and temperature.

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M1855

7

8

9

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.

Temporary Temperature Hold

1. Press ▲ or ▼ key twice to set a
temporary temperature.

TEMPORARY

M1855

Note: The temporary temperature setting

remains in effect until the next program
period. To cancel, press Hold twice
and wait five seconds.

Indefinite Temperature Hold

The Hold key allows you to hold a tempera­ture indefinitely. When Hold is active, Hld
displays continuously.

1. Press Hold.

2. Press ▲ or ▼ key to set indefinite

temperature setting.

M1855

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3. To cancel, press Hold and wait five
seconds.

System and Fan

Use the SYSTEM and FAN switches to
change the settings.

PM

E

U

T

Hold Select

System Setting

To select the desired system setting, slide the
SYSTEM switch in the lower right corner of
the thermostat.

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.

17

FAN SYSTEM

Auto On

SYSTEM SWITCH

Cool Off Heat

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Heat and Cool Indicators

8

Indicates a call for heating.

Indicates a call for cooling.

Fan Setting

To select the desired fan setting, slide the
FAN switch in the lower left corner of the
thermostat.

M1854

Note: In the programming mode, the

and indicate the system setting.

PM

E

U

T

FAN SYSTEM

Auto On

FAN SWITCH

Hold Select

Cool Off Heat

FAN settings control the system fan as follows:
Auto: Fan operates with equipment.
On: Fan operates continuously.

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Minimum Off-Timing

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 (com­pressor is off and can’t be heard). This occurs
when you change the SYSTEM switch
position while the compressor is off or when
you change the temperature setting, causing
the compressor to turn off. The minimum off­timer is also triggered during power interrup­tion and power restoration. You will know the
minimum off time is in effect by a flashing
or on the display.

CAUTION

Equipment Damage Hazard.
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 instruc­tions. To avoid possible compressor
damage, allow the compressor to
remain off for five minutes before
restarting.

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TROUBLESHOOTING GUIDE

Symptom Possible Cause Action

Display will not
come on.

Temperature
settings will not
change (Example:
cannot set the
heating higher or the
cooling lower).

Thermostat is not
being powered.

The upper or lower
temperature limits
were reached.

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.

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).

20

(Contiuned)

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Troubleshooting (Contiuned)

Symptom Possible Cause Action

Heating will not
come on.

No power to the
thermostat.
System selection is
not set to Heat.
Heating setpoint is
below room
temperature.

Check that the setpoint is above room
temperature–reset temperature or wait for
room temperature to fall.
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.

Cooling will not
come on.

No power to the
thermostat.
System selection is
not set to Cool.
Cooling setpoint is
above room
temperature.

Check that the setpoint is below room
temperature–reset temperature or wait for
room temperature to rise.
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.

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Troubleshooting (Contiuned)

Symptom Possible Cause Action

System on indicator
and is lit, but
no warm or cool air
is coming from the
registers.

Heating/cooling
equipment turns on
the fan when the
equipment has
reached the

Wait a minute after seeing the flame or
snowflake and then check the registers.

setpoint.

System on indicator
or is flashing

Minimum off timer is
in effect.

Wait five minutes until the minimum off timer
is complete.

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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 five years 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 limited warranty applies to product installed on or after 10/1/2001 where product is manufactured after 1/1/2000. This
limited warranty is not retroactive to any installations prior to 10/1/2001 or on product produced prior to 2000.

THE LIMITED WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES AND
LIABILITIES, WHETHER IN CONTRACT OR IN NEGLIGENCE, EXPRESS OR IMPLIED, IN LAW OR IN FACT, INCLUD­ING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR USE, AND IN N EVENT SHALL
WARRATOR BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.

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 limited warranty gives you specific
legal rights, and you may also have other rights which vary from state to state.

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Parts will be provided by our factory organization or an authorized service organization in your area listed in the yellow
pages. 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 1-800-500-2041.

For service, contact your local heating and cooling contractor.

Pub. No. 12-5026-01

® U.S. Registered Trademark
69-1609 4-02 G.H. Printed in Mexico

American Standard Inc.
Troup Highway
Tyler, TX 75711-9010