Trane TAYSTAT 340, TAYSTAT 350 Owner's Manual

OWNER’S GUIDE

Pub. No. 22-5183-01

Programmable Thermostat

TAYSTAT 340, 350

69-1228-1

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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:

• 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.

M18527

FAN SYSTEM

Auto On

Cool Off Heat

Hold Select

DECREASE KEY:
DECREASE
TEMPERATURE
OR SCROLL
THROUGH
INSTALLER
SETUP OPTIONS.

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

T

U

E

PM

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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.

DURING NORMAL MODE, THE CURRENT PERIOD
DISPLAYS. DURING PROGRAMMING, THE PERIOD BEING
PROGRAMMED 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
IN NORMAL MODE.
PERIOD START TIME DISPLAYS
IN PROGRAMMING MODE.

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

FLAME DISPLAYS DURING HEATING OR WHILE
PROGRAMMING HEATING SETPOINT; SNOWFLAKE DISPLAYS
DURING 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 programming

mode 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 programming mode.

M12591A

SET

PM

M18565

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