Trane TAYSTAT 540 User Manual

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Programmable Heat-Pump Thermostat

TAYSTAT 540

OWNER’S GUIDE

Pub. No. 22-5185-01

69-1229

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.

HOLD KEY OVERRIDES PROGRAM

OR HOLDS TEMPERATURE INDEFINITELY.

LCD DISPLAY

Hold Select

FAN	SYSTEM
Auto On	Cool Off Heat Em. Ht.

INCREASE KEY: INCREASE TEMPERATURE,

SET TIME, OR SCROLL THROUGH DAYS OF WEEK.

SELECT KEY: SET

CURRENT DAY AND

TIME, OR SET

PROGRAM DAY

AND TIME.

DECREASE KEY: DECREASE TEMPERATURE,

SET TIME, OR SCROLL BACKWARD THROUGH DAYS OF WEEK.

FAN SWITCH

AUTO: FAN RUNS ONLY WHEN SYSTEM OPERATES. ON: FAN RUNS CONTINUOUSLY.

SYSTEM SWITCH. SLIDE TO COOL, OFF, OR HEAT FOR PROGRAMMING. SLIDE TO COOL, OFF, HEAT, OR EM. HT. FOR CURRENT SETTING.

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Your thermostat displays the current day, time, period, temperature and system ( for heating or for cooling) in normal mode. In programming mode, only the setting or settings being programmed display. For example “Sa Su” (Saturday Sunday) displays while programming the weekend schedule. All settings are explained below:

SET DISPLAYS

WHILE SETTING

THE CLOCK.

CURRENT TIME DISPLAYS IN NORMAL MODE. PERIOD START TIME DISPLAYS IN PROGRAMMING MODE.

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

DISPLAY DURING WEEKEND PROGRAMMING MODE.

TEMPORARY DISPLAYS

DURING TEMPORARY

TEMPERATURE HOLD.

SET TEMPORARY

Mo Tu We Th Fr Sa Su WAKE LEAVE RETURN SLEEP

DURING NORMAL MODE, THE

CURRENT PERIOD DISPLAYS.

DURING PROGRAMMING, THE

PERIOD BEING PROGRAMMED

DISPLAYS (WAKE, LEAVE,

RETURN OR SLEEP).

CURRENT TEMPERATURE DISPLAYS. HEATING AND 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 the programming mode at any time, press Hold.

1.To set Current Time, press Select twice. Press ▲ or ▼ to set current time.

SET

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

M12593

3. Press Hold to exit programming 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.


		Heating	Cooling
Period	Start Time	Temperature	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.


		Heating	Cooling
Period	Start Time	Temperature	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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