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Summary of Contents for White Rodgers 1F91W-71
- Page 1 1F91W-71 OPERATION GUIDE Multi-stage Electronic Digital Thermostat WHITE-RODGERS Operator: Save this booklet for future use!
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Page 2: About Your New Thermostat
About Your New Thermostat . . . Your new Digital COMFORT SET II Multi-stage Thermostat uses the technology of a solid-state microcomputer to provide precise time/temperature control. The COMFORT SET II Thermostat offers you the flexibility to design heating and cooling programs that fit your needs. Please read this manual thoroughly before operating or programming your thermostat. -
Page 3: Table Of Contents
YOUR NEW THERMOSTAT'S FEATURES ... 4 OPERATING YOUR THERMOSTAT ... 5 PARTS OF THE THERMOSTAT The Back Of the Thermostat Body The Display The Thermostat Buttons OPERATING FEATURES In This Guide . . . PROGRAMMING YOUR THERMOSTAT ... 17 PLANNING FOR YOUR NEEDS ENTERING YOUR PROGRAM Set Current Time and Day Enter Heating Program... -
Page 4: Your New Thermostat'sfeatures
YOUR NEW THERMOSTAT’S FEATURES • Computed Energy Management Recovery (EMR) • Automatic changeover (operator selectable) • Five-day/two-day programming capability • Simultaneous heat and cool program stor- • Preprogrammed temperature control • Four separate time and temperature set- tings per 24-hour period •... -
Page 5: Operating Your Thermostat
OPERATING YOUR THERMOSTAT Before you begin programming your new ther- mostat, you should be familiar with its features and with the display and the location and opera- tion of the thermostat buttons. The information in this section will help you become familiar with your thermostat so that you can easily program Your thermostat consists of two parts: thermostat body and the subbase. -
Page 6: Parts Of The Thermostat
PARTS OF THE THERMOSTAT The Back of the Thermostat Body Turn the thermostat body over. On the back are the 9 volt Energizer ® alkaline battery and the option switches. 1. The 9 volt Energizer ® alkaline battery pro- vides power to the thermostat when the 24 VAC power is interrupted (for example, when you remove the thermostat from the wall for programming). - Page 7 line battery. The battery will provide power for all functions except the display light and audio prompting, which work only on 24 VAC power. If the word BAT is displayed con- tinuously (non-flashing), the thermostat is not being supplied with 24 VAC power and is being powered by the battery alone.
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Page 8: The Display
Other than located behind the thermostat door. To open the door, use your fingernail in the indentation at the top center of the door. Pull the door out, then swing the door down on its hinges. Following are brief descriptions of the display and the thermostat buttons. - Page 9 5 DAY SYSTEM TIME HEAT - OFF - COOL - AUTO TIME BACK ON - AUTO 2 DAY 5 DAY VIEW HOLD CLOCK PRGM TEMP PRGM PRGM...
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Page 10: The Thermostat Buttons
The Thermostat Buttons Sets the system mode (HEATing, OFF, COOLing, or AUTOmatic changeover [user selectable feature]). Selects fan operation (see #6, above). This button is also used to program the fan to run continuously during a program period. Runs display forward or backward through time, day, or anticipation settings during programming. - Page 11 5 DAY SYSTEM TIME HEAT - OFF - COOL - AUTO TIME BACK ON - AUTO 16 17 VIEW HOLD CLOCK PRGM TEMP PRGM PRGM 10 11 12 13 14 15...
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Page 12: Operating Features
OPERATING FEATURES Now that you are familiar with the thermostat display and buttons, read the following informa- tion to learn about the many features of the thermostat. • COMPUTED ENERGY MANAGEMENT RECOVERY (EMR) - The thermostat's mi- crocomputer automatically calculates the time it will take to change the temperature to the next program setting. - Page 13 power. If the switch is OFF (down), use a pencil or small screwdriver to move the switch to the ON position (see figure at right). Leave the battery out of the thermo- stat for at least two minutes, to allow the thermostat to reset itself.
- Page 14 • TWO HOUR TEMPERATURE OVER- RIDE — Press display shows the temperature you want. The thermostat will override current pro- gramming and keep the room temperature at the selected temperature for two hours. After two hours, the thermostat will auto- matically revert to the program.
- Page 15 CAUTION A cooling anticipation setting of less than 10 may cause decreased compres- sor life. To adjust anticipation, press at the same time. The display will show HEAT 8 (this is the factory preprogrammed heating anticipation setting). You may se- lect any anticipation setting from 4 to 40.
- Page 16 • BACKLIT DISPLAY — When you press any button on the thermostat, the display is lit for approximately eight seconds (this fea- ture works only when the thermostat is attached to the wall and 24 VAC power is present to the thermostat). •...
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Page 17: Programming Your Thermostat
PROGRAMMING YOUR THERMOSTAT Now you are ready to program your thermostat. This section will help you plan and program your thermostat to meet your needs. For maximum comfort and efficiency, keep the following guidelines in mind when planning your program. •... - Page 18 questions 1 through 4. If you are using the thermostat in your home, answer questions 5 through 8. Keep in mind that you should plan for both weekday and weekend programs. FOR COMMERCIAL APPLICATIONS: 1a. What time does the first person arrive at the building in the morning? b.
- Page 19 6a. What time does the last person leave the house in the morning? b. What temperature should the house be at this time? These will be your DAY tempera- ture settings. 7a. What time does the first person arrive home in the evening? b.
- Page 20 Heating Program for ALL days of the Week: PERIOD Determine the time periods and heating and cooling temperatures for your weekday pro- gram. You must program 4 periods for each day (MOR, DAY, EVE, and NHT). However, you may use the same heating and cooling tempera- tures for consecutive time periods.
- Page 21 Heating/Cooling Schedule Plan WEEKDAY (5 DAY) Start Time Temperature MOR HEAT DAY HEAT EVE HEAT NHT HEAT MOR COOL DAY COOL EVE COOL NHT COOL WEEKEND (2 DAY) Start Time Temperature...
- Page 22 MOR HEAT DAY HEAT EVE HEAT NHT HEAT MOR COOL DAY COOL EVE COOL NHT COOL SAMPLE Heating/Cooling Schedule Plan WEEKEND (2 DAY) WEEKDAY (5 DAY) Start Time Temperature 5:30 AM 68° 7:30 AM 8:00 AM 66° 2:00 PM 4:30 PM 70°...
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Page 23: Entering Your Program
ENTERING YOUR PROGRAM Follow these steps to enter the heating and cooling programs you have selected. NOTE We recommend that you remove the thermostat from the wall for programming (especially for entering cooling programming). A fresh 9 volt ® Energizer alkaline battery must be installed to perform off-wall programming. -
Page 24: Enter Heating Program
5. Press once. The display will show the day of the week as an abbreviation (MO for Monday, TU for Tuesday, etc.). 6. Press and hold either reach the current day of the week. 7. Press once. The display will show the PRGM correct time and room temperature alter- nately. - Page 25 AM, and 70 is the programmed tempera- ture (this example reflects factory prepro- gramming). 3. To change the displayed start time to your selected start time for weekday MOR heat program, press TIME selected time appears. The time will change in 15 minute increments.
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Page 26: Enter Cooling Program
Enter Cooling Program CAUTION If outside temperature is below 50 F, we recommend that you remove the ther- mostat from the wall before proceeding with the following steps to program cool- ing temperatures. Personal injury or property damage may occur due to air conditioner compressor slugging. - Page 27 3. Press PRGM 4. Press SYSTEM until COOL is displayed. HEAT - OFF - COOL - AUTO 5. Repeat step 2 to check cooling tempera- tures. 6. Press to begin program operation. PRGM YOUR THERMOSTAT IS NOW COMPLETELY PROGRAMMED AND READY TO AUTOMATI- CALLY PROVIDE MAXIMUM COMFORT AND EFFICIENCY! SYSTEM...
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Page 28: Questions And Answers
QUESTIONS AND ANSWERS 1. How can I permanently change a part of my program? Press VIEW until you reach the time/tem- PRGM perature schedule you want. Then press TIME the program. See PROGRAMMING YOUR THERMOSTAT. 2. How can I have no change in tempera- ture from one time period to another? Simply select the same temperature for each consecutive time period. - Page 29 4. What happens if the electricity goes off or is manually shut off? If you have not installed a 9 volt alkaline battery, the display will go blank and the program will be lost in approximately one minute. When electricity is restored, the thermostat will maintain a heating tempera- ture of 64 F and a cooling temperature of 82 F until you reenter your program.
- Page 30 To correct this, remove the thermostat from the wall and disconnect the battery. Wait about one minute, then reconnect the bat- tery. The thermostat will revert to the factory preset program until you reprogram the thermostat. If you don’t want to reprogram the thermostat immediately, press until OFF is displayed and replace the ther- mostat on the wall.
- Page 31 The display light and audio prompting (beep) only work when the thermostat is on the wall and 24 VAC power is present to the thermo- stat. These features will not work on battery power alone. See OPERATING YOUR THERMOSTAT. 9. The display is flashing BAT. What does this mean? The 9 volt battery installed in the thermostat is low and should be replaced with a fresh 9...
- Page 32 • The EMR function is operating. The EMR function will bring the system on auto- matically to bring the temperature to the selected level by the beginning of the next program period. See OPERATING YOUR THERMOSTAT. • You have programmed the incorrect day or time.
- Page 33 14. Between heating and cooling seasons, I want to turn my system off. Can I do this without affecting my thermostat program- ming? Any time you wish to turn your system off, simply press SYSTEM until the display shows HEAT - OFF - COOL - AUTO OFF.
- Page 34 dead. If you are changing the battery after seeing a flashing BAT on the display, the installed battery may be dead. If you remove the old battery and install a fresh one within one minute, you should not lose your ther- mostat programming.
- Page 36 If you need further information on programming or operation, you may write to our Technical Service Department at the address shown below. WHITE-RODGERS DIVISION EMERSON ELECTRIC CO. 9797 REAVIS ROAD ST. LOUIS, MISSOURI 63123-5398 Part No. 37-5518A 9523...
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