White Rodgers 1F90W-51 manual

OPERA TION GUIDE 5 Day/2 Day Electronic Digital Thermostat 1F90W -51 Operator: Save this booklet for future use! WHITE-RODGERS WHITE-RODGERS[...]

2 About Y our 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 th[...]

3 PROGRAMMING YOUR THERMOSTAT .................................... 16 PLANNING FOR YOUR NEEDS ENTERING YOUR PROGRAM Set Current Time and Day Enter Heating Program Enter Cooling Program CHECK YOUR PROGRAMMING QUESTIONS AND ANSWERS ................. 26 YOUR NEW THERMOSTAT'S FEATURES ............................................ 4 OPERATING YOUR T[...]

4 • Separate 5-day (weekday) and 2-day (week- end) setback programming • Simultaneous heat and cool program stor- age • Four separate time/temperature settings per 24-hour period • Computed Energy Management Recovery (EMR) • Armchair programming capability • Backlit LCD displays continuous set point, time, and room temperature • 1.5 v[...]

5 OPERA TING YOUR THERMOST A T SUBBASE THERMOSTAT BODY 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. Your [...]

6 for approximately a year. If power loss is long enough for the program to be lost, the thermo- stat will automatically return to the factory pro- grammed temperatures (64 ° F heating and 82 ° F cooling) when power is restored. You must reprogram the thermostat if this happens. If the word BATTERY is flashing in the display window, the batteries[...]

7 Other than and , the buttons are located behind the thermostat door. To open the door, pull the door out from the top, then swing it down on its hinges. On the following pages there are brief descrip- tions of the display and the thermostat buttons. BACK OF THERMOSTAT BODY 3-pin Connector 6-pin Connector Batteries W14 S3[...]

8 The word BATTERY flashes on the display when the "AA" alkaline batteries are weak and should be replaced. The word BAT- TERY is displayed continuously (non-flash- ing) when thermostat is running on battery power only. FAN ON is displayed when the blower is operating continuously. FAN AUTO is dis- played during automatic fan operation (w[...]

9 1 2 3 4 6 6 2 DAY 5 DAY 2 3 4 FAN AUTO FAN ON 5 DAY FAN AUTO 5 BATTERY TIME FWD SYSTEM HEAT-OFF-COOL SET CLOCK VIEW PRGM HOLD TEMP TIME BACK FAN ON - AUTO SET DAY RUN PRGM ADV PRGM[...]

10 Used to initiate or review thermostat pro- gramming. Used to start program operation after pro- gramming. Also used to return thermostat to program operation after being in HOLD mode. Used to manually override programming to hold at a selected temperature (when HOLD is displayed). Used to advance thermostat program to the next program period (fo[...]

11 10 11 12 13 14 15 16 17 18 9 7 8 5 DAY FAN AUTO TIME FWD SYSTEM HEAT-OFF-COOL SET CLOCK VIEW PRGM HOLD TEMP TIME BACK FAN ON - AUTO SET DAY RUN PRGM ADV PRGM[...]

12 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) — At installation, the thermostat can be set to automatically cal- culate the time it will take to change the temperature to the[...]

13 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. Press HOLD TEMP . HOLD will be displayed. Then choose the desired hold temperature by pressing or . The thermostat will hold the room tempera- ture at t[...]

14 A cooling anticipation setting of less than 10 may cause decreased compres- sor life. To adjust heat anticipation, press SET CLOCK and SET DAY at the same time. The display will show HEAT 5 (this is the factory prepro- grammed heating anticipation setting). You may select any anticipation setting from 2 to 40 ( note that for hydronic systems, a [...]

15 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. • SYSTEM INDICATOR LIGHT — The red light on the upper right part of the ther[...]

16 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 vaca[...]

17 2a. What time do the building occupants reach a maximum activity level (using lights, equip- ment, meeting rooms, etc.)? b. What temperature should the building be at this time? These will be your DAY tempera- ture settings. 3a. What time do the building occupants reach a minimum activity level (limited personnel in building)? b. What temperatur[...]

18 8a. What time does the last person go to bed at night? b. What temperature should the house be at this time? These will be your NHT (night) temperature settings. Now look at the factory preprogrammed times and temperatures shown below. If this program will suit your needs, simply press RUN PRGM to begin running the factory preset program. If you[...]

19 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. You may also want to[...]

20 WEEKDAY (5 DAY) WEEKEND (2 DAY) Start Time Temperature Start Time Temperature MOR HEAT DAY HEAT EVE HEAT NHT HEAT MOR COOL DAY COOL EVE COOL NHT COOL Heating/Cooling Schedule Plan[...]

21 WEEKDAY (5 DAY) WEEKEND (2 DAY) Start Time Temperature Start Time Temperature MOR HEAT DAY HEAT EVE HEAT NHT HEAT MOR COOL DAY COOL EVE COOL NHT COOL SAMPLE Heating/Cooling Schedule Plan 5:30 AM 8:00 AM 5:00 PM 10:30 PM 6:30 AM 2:00 PM 5:00 PM 10:30 PM 7:00 AM 11:00 AM 6:00 PM 11:30 PM 7:00 AM 12:30 PM 6:00 PM 11:30 PM 68°F 70°F 70°F 65°F 76[...]

22 2. Press and hold either TIME FWD or TIME BACK until you reach the correct minutes. 3. Press SET CLOCK once. The display window will show the hour only. EXAMPLE: 4. Press and hold either TIME FWD or TIME BACK until you reach the correct hour and AM/PM designation ( AM begins at midnight; PM begins at noon). 5. Press SET DAY once. The display wil[...]

23 1. Press SYSTEM HEAT-OFF-COOL until HEAT is displayed. 2. Press VIEW PRGM once. 5 DAY (indicating week- day program), and MOR , representing the morning heating period, will appear in the display. Also displayed are the currently programmed start time for the MOR period and the currently programmed tempera- ture. EXAMPLE: 5 DAY This display wind[...]

24 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 ). 10. When you have completed entering your heating program, press RUN PRGM . Enter Cooling Program If outside temperature is below 50 ° F, we reco[...]

25 1. Press SYSTEM HEAT-OFF-COOL until HEAT is displayed. 2. Press and hold VIEW PRGM to view the heating period times and temperatures in sequence for weekday, then weekend MOR , DAY , EVE , and NHT program periods. 3. Press RUN PRGM . 4. Press SYSTEM HEAT-OFF-COOL until COOL is displayed. 5. Repeat step 2 to check cooling tempera- tures. 6. Press[...]

26 1. How can I permanently change a part of my program? Press VIEW PRGM until you reach the time/tem- perature schedule you want. Then press TIME FWD or TIME BACK and and to change the program. See PROGRAM- MING YOUR THERMOSTAT . 2. How can I have no change in tempera- ture from one time period to another? Simply select the same temperature for ea[...]

27 start the normal program function. See PROGRAMMING 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. When electricity is restored, the clock will reset itself to 1[...]

28 the thermostat immediately, press SYSTEM HEAT-OFF-COOL until OFF is displayed and replace the ther- mostat on the wall. Then press RUN PRGM to begin the factory preset program. Or you may reprogram the thermostat, then re- place it on the wall. To prevent further static discharge prob- lems, touch another object to release static build-up before[...]

29 See OPERATING YOUR THERMO- STAT . • You have programmed the incorrect day or time. Check your programming (be sure that the times you programmed are correct AM or PM times). See PRO- GRAMMING YOUR THERMOSTAT . • The thermostat is in the HOLD mode. Press RUN PRGM to start program operation. See OPERATING YOUR THERMO- STAT . • The compressor[...]

30 continuously during this period. See PROGRAMMING YOUR THERMO- STAT . • The blower delay feature is operating. This energy saving feature continues to blow conditioned air through the ducts after the system has turned off, rather than letting the air dissipate. 11. Why is the system turning on and off so frequently (seldom)? The anticipation se[...]

31 13. I live in an area where daylight savings time is observed. How do I change the thermostat clock twice a year without affecting thermostat programming? To change your clock, follow the instruc- tions for setting current time and day. See ENTERING YOUR PROGRAM . Thermo- stat programming is not affected when you change the clock. 14. Do I have [...]

Part No. 37-5090A 9139 If you need further information on programming or operation, write to us at: White-Rodgers Division, Emerson Electric Co. 9797 Reavis Road St. Louis, MO 63123 Attn: Technical Service Department R[...]