American Standard ASYSTAT 340 User manual

OWNER’S GUIDE

Pub. No. 12-5026-01

Programmable Thermostat

ASYSTAT 340

69-1609

2Pub. No. 12-5026-01

69-1609

FEATURES

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.

•Preprogrammed for your convenience.

FAN SYSTEM

Auto On Cool Off Heat

Hold Select

DECREASE KEY

DECREASE

TEMPERATURE

OR SCROLL

THROUGH

INSTALLER

SETUP OPTION

SELECT KEY:

TO SET TIME

AND DAY.

INCREASE KEY:

INCREASE

SETPOINT,

OR ADVANCE

TO NEXT STEP.

HOLD KEY OVERRIDES PROGRAM

OR HOLDS TEMPERATURE INDEFINITELY.

LCD DISPLAY

FAN SWITCH SYSTEM SWITCH

TUE

M2053

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Your thermostat displays the

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.

TEMPORARY

SET

M18560

SET DISPLAYS WHILE

SETTING THE CLOCK.

URING NORMAL MODE, THE CURRENT PERIOD

ISPLAYS. DURING PROGRAMMING, THE PERIOD BEING

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

TEMPORARY DISPLAYS

DURING TEMPORARY

TEMPERATURE HOLD.

CURRENT DAY DISPLAYS IN

NORMAL MODE. MONDAY

THROUGH FRIDAY DISPLAY

DURING WEEKDAY

PROGRAMMING MODE.

SATURDAY AND SUNDAY

DISPLAY DURING WEEKEND

PROGRAMMING MODE.

CURRENT TIME DISPLAYS

N NORMAL MODE.

PERIOD START TIME DISPLAYS

N PROGRAMMING MODE.

CURRENT TEMPERATURE DISPLAYS.

HEATING OR COOLING SETPOINT

DISPLAYS DURING PROGRAMMING.

FLAME DISPLAYS DURING HEATING OR WHILE

ROGRAMMING HEATING SETPOINT; SNOWFLAKE DISPLAYS

URING COOLING OR WHILE PROGRAMMING COOLING SETPOINT.

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PROGRAMMING YOUR

THERMOSTAT

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.

Note: While setting the current time, SET

displays.

2. To set Day of Week, press Select

again. Press ▲or ▼to set current day.

3. Press Hold to exit the day and time

mode.

M12591

SET

M1856

SET

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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.

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).

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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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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)

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.

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.

Period

Start Time

Heating

Temperature

Cooling

Temperature

Wake

Leave

Return

Sleep

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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.

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).

Period

Start Time

Heating

Temperature

Cooling

Temperature

Wake

Leave

Return

Sleep

10 Pub. No. 12-5026-01

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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 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.

Note: To exit the programming mode at any

time, press Hold (the thermostat saves

your changes).

FAN SYSTEM

Auto On Cool Off Heat

Hold Select

TUE

M20540

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