Related Manuals for White Rodgers 1F90-71
Summary of Contents for White Rodgers 1F90-71
- Page 1 1F90-71 OPERATION GUIDE 5 Day/2 Day 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 White-Rodgers Digital Thermostat uses the technology of a solid-state microcomputer to provide precise time/temperature control. This 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 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 ... 19 PLANNING FOR YOUR NEEDS ENTERING YOUR PROGRAM Set Current Time and Day Enter Heating Program...
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Page 4: Your New Thermostat's Features
YOUR NEW THERMOSTAT’S FEATURES • Separate 5-day (weekday) and 2-day (week- end) setback programming • Simultaneous heat and cool program storage • Four separate time/temperature settings per 24-hour period • Computed Energy Management Recovery (EMR) • Automatic changeover (operator-selectable) • Armchair programming capability •... -
Page 5: Operating Your Thermostat
OPERATING YOUR THERMOSTAT Before you begin programming your thermo- stat, you should be familiar with its features and with the display and the location and operation of the thermostat buttons. The information in this section will help you become familiar with your new thermostat so that you can easily program it. -
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 3 “AA” Energizer ® alkaline batteries and the two option switch groups (A and B). ® 1. The “AA” Energizer alkaline batteries pro- vide power to the thermostat when the 24 VAC power is interrupted (for example,... - Page 7 Other than , the buttons are Batteries 6-pin connector located behind the thermostat door. To open the door, put your fingernail in the indentation at the top of the door, then pull the door out from the top and swing it down on its hinges. On the following pages there are brief descrip- tions of the display and the thermostat buttons.
- Page 8 The Display 1 Continuously displays system mode (HEAT, OFF, COOL, AUTO, HOLD). During pro- gramming, the program period is displayed (MOR, DAY, EVE, or NHT). 2 Alternately displays room temperature (F denotes degrees Fahrenheit and C denotes degrees Celsius) and time of day (A de- notes AM time and P denotes PM time).
- Page 9 5 DAY FAN AUTO DIGITAL COMFORT SET WHITE-RODGERS SYSTEM TIME SWITCH HEAT-OFF-COOL-AUTO TIME BACK SWITCH ON-AUTO 2 DAY FAN AUTO 5 DAY VIEW HOLD CLOCK PRGM TEMP PRGM PRGM FAN ON BATTERY...
- Page 10 The Thermostat Buttons 7 Sets the system mode (HEATing, OFF, COOLing, or AUTOmatic changeover). 8 Selects fan operation (see #6, above). This button is also used to program the fan to run continuously during a program period. 9 Runs display forward or backward through time, day, or anticipation settings during programming.
- Page 11 17 (Blue arrow) Lowers temperature setting (40 F or 4 C minimum). 18 The red indicator light glows whenever heat- ing, cooling, or fan are in operation. 5 DAY FAN AUTO DIGITAL COMFORT SET WHITE-RODGERS SYSTEM TIME CLOCK SWITCH HEAT-OFF-COOL-AUTO TIME BACK SWITCH...
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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 microcomputer can be set to automatically calculate the time it will take to change the temperature to the next program setting. - Page 13 switch to the OFF position (see figure be- low). Leave the battery out of the thermostat for at least two minutes, to allow the ther- mostat to reset itself. See AUTOMATIC CHANGEOVER to determine proper posi- tions of Group B option switches #1 and #2. EMR (ON) Group B Option...
- Page 14 stat, if necessary, put the thermostat back on the wall, and restore 24 VAC power. To set the thermostat for automatic changeover after programming, press thermostat to AUTO (the setpoint tempera- ture display is blank in the AUTO mode). The system will now automatically switch between heating and cooling, depending on the actual room temperature.
- Page 15 thermostat will override current program- ming and keep the room temperature at the selected temperature for two hours. After two hours, the thermostat will automatically revert to the program. • HOLD TEMPERATURE — The thermostat can hold any temperature within its range for an indefinite period, without reverting to the program.
- Page 16 (long cycles), you may want to adjust the anticipation setting. CAUTION A cooling anticipation setting of less than 10 may cause decreased compressor life. To adjust heat anticipation, press at the same time. The display will show HEAT 5 (this is the factory preprogrammed heating anticipation setting).
- Page 17 24 VAC power is not being supplied to the thermostat and the thermostat is operating on battery power only. • AUDIO PROMPTING — Each time you press a button, the thermostat will beep. • BACKLIT DISPLAY — When you press any button on the thermostat, the display is lit for approximately eight seconds.
- Page 18 Total Keypad Lockout Switch #1 ON Switch #2 OFF To enable total keypad lockout, move Group A option switch #1 to ON (see figure above). To disable total keypad lockout, move op- tion switch #1 to OFF. • LIMITED TEMPERATURE RANGE — When Group A option switch #1 is in the OFF position and option switch #2 is in the ON position, the heating and cooling tem-...
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Page 19: Programming Your Thermostat
PROGRAMMING YOUR THERMOSTAT Now you are ready to program your thermostat. This section will help you plan your thermostat’s program to meet your needs. For maximum comfort and efficiency, keep the following guidelines in mind when planning your program. • When heating (cooling) your building, pro- gram the temperatures to be cooler (warmer) when the building is vacant or during peri- ods of low activity. - Page 20 3a. What time do the building occupants reach a minimum activity level (limited personnel in building)? b. What temperature should the building be at this time? These will be your EVE (evening) temperature settings. 4a. What time does the building become va- cant? b.
- Page 21 Now look at the factory preprogrammed times and temperatures shown below. If this program will suit your needs, simply press running the factory preset program. If you want to change the preprogrammed times and temperatures, do the following. NOTE To operate properly in the AUTO mode, there must be a minimum 1 F separation between the highest heat temperature and the lowest cool temperature (see diagram at right).
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Page 22: Entering Your Program
weekday and weekend programs (for example, you may select 5:00 AM and 70 as the weekday MOR heating start time and temperature, and choose 7:00 AM and 76 as the weekday MOR cooling start time and temperature). Use the following table to plan your program time peri- ods, and the temperatures you want during each period. - Page 23 Heating/Cooling Schedule Plan WEEKEND (2 DAY) WEEKDAY (5 DAY) Start Start Time Temperature Time Temperature MOR HEAT DAY HEAT EVE HEAT NHT HEAT MOR COOL DAY COOL EVE COOL NHT COOL...
- Page 24 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 F 7:00 AM 8:00 AM 65 F 11:00 AM 5:00 PM 70 F 6:00 PM...
- Page 25 3. Press once. The display window will CLOCK show the hour only. EXAMPLE: 4. Press and hold either TIME reach the correct hour and AM/PM designa- tion (AM begins at midnight; PM begins at noon). 5. Press once. The display will show the day of the week as an abbreviation (MO for Monday, TU for Tuesday, etc.).
- Page 26 SYSTEM 1. Press until HEAT is displayed. SWITCH 2. Press VIEW once. 5 DAY (indicating weekday PRGM program), and MOR, representing the morn- ing heating period, will appear in the dis- play. Also displayed are the currently pro- grammed start time for the MOR period and the currently programmed temperature.
- Page 27 8. Repeat steps 3 through 7 for the weekday EVE and NHT heating programs. 9. After entering your weekday heating pro- gram, repeat steps 1 through 8 for your weekend programming (keep in mind that for weekend programming, the display should be changed from 5 DAY to 2 DAY).
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Page 28: Check Your Programming
SYSTEM 1. Press until COOL appears. SWITCH 2. Follow the procedure for entering your heat- ing program, using your selected cooling times and temperatures. CHECK YOUR PROGRAMMING Follow these steps to check your thermostat programming one final time before beginning thermostat operation. -
Page 29: Questions And Answers
QUESTIONS AND ANSWERS 1. How can I permanently change a part of my program? VIEW Press until you reach the time/tempera- PRGM ture schedule you want. Then press TIME BACK 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 30 the normal program function. See PRO- GRAMMING YOUR THERMOSTAT. 4. What happens if the electricity goes off or is manually shut off? If you have not installed 3 “AA” alkaline batteries, the display will go blank and the program will be lost in approximately one minute.
- Page 31 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 32 8. The display is flashing BATTERY. What does this mean? The “AA” batteries installed in the thermo- stat are low and should be replaced with ® fresh “AA” Energizer alkaline batteries. See OPERATING YOUR THERMOSTAT. 9. The display shows a continuous (non- flashing) BATTERY.
- Page 33 • The EMR function is operating. The EMR function will automatically bring on the system automatically to bring the tem- perature to the selected level by the begin- ning of the next program period. See OPERATING YOUR THERMOSTAT. • You have programmed the incorrect day or time.
- Page 34 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, SYSTEM simply press until the display shows SWITCH OFF.
- Page 35 16. Do I have to reprogram my thermostat after I change the batteries? When the thermostat is on the wall and the system has power, the thermostat is being powered by a 24 VAC source. If power is lost, or if the thermostat is removed from the wall, the program will be retained for ap- proximately one minute if there are no batteries installed or if the installed batteries...
- Page 36 If you need further information on programming or operation, write to: White-Rodgers Division, Emerson Electric Co. 9797 Reavis Road St. Louis, MO 63123 Attn: Technical Service Department Part No. 37-5098B Replaces 37-5098A 9518...