White Rodgers 1F90-71 manual

OPERA TION GUIDE 5 Day/2 Day Electronic Digital Thermostat 1F90-71 WHITE-RODGERS Operator: Save this booklet for future use![...]

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 Operator: Save this booklet for future use! PROGRAMMING YOUR THERMOSTAT .................................... 19 PLANNING FOR YOUR NEEDS ENTERING YOUR PROGRAM Set Current Time and Day Enter Heating Program Enter Cooling Program CHECK YOUR PROGRAMMING QUESTIONS AND ANSWERS ................. 29 YOUR NEW THERMOSTAT’S FEATURES ......................[...]

4 • 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 • Backlit LCD displays continuous se[...]

5 OPERA TING YOUR THERMOST A T 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 thermostat consists of t[...]

6 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, when you remove the t[...]

7 Other than and , the buttons are 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. BACK OF THERMOSTAT BODY 3-pin Co[...]

8 5 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. 6 FAN ON is displayed when the blower is operating continuously. FAN AUTO is dis- played during automatic fan operation (whe[...]

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

10 12 Used to initiate or review thermostat pro- gramming. 13 Used to start program operation after pro- gramming. Also used to return thermostat to program operation after being in HOLD mode. 14 Used to manually override programming to hold at a selected temperature (when HOLD is displayed). 15 Used to advance thermostat program to the next progra[...]

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

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) — The thermostat’s microcomputer can be set to automatically calculate the time it will take to change the temperature to the [...]

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) Switch #1 (see AUTOMATIC CHANGEOVER ) Switch #2 (see AUTOMATIC CHANGEOVER ) Switch #[...]

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 SYSTEM SWITCH to set the 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 t[...]

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. Press HOLD [...]

16 (long cycles), you may want to adjust the anticipation setting. A cooling anticipation setting of less than 10 may cause decreased compressor 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 preprogrammed heating anticipation setting). You may se- lect any anticipa[...]

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. • SYSTEM INDICATOR LIGHT — The red[...]

18 SET DAY HOLD TEMP ADV PRGM Programming should be completed and batter- ies should be installed before changing Group A option switches #1 or #2. Limited Temperature Range Switch #1 OFF Switch #2 ON Total Keypad Lockout Switch #1 ON Switch #2 OFF ON 12 Group A Option Switches To enable total keypad lockout, move Group A option switch #1 to ON (se[...]

19 PROGRAMMING YOUR THERMOST A T 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[...]

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. What temperature should the building be at this time? These will be your NHT (n[...]

21 Heating Program for ALL days of the Week: FACTORY PREPROGRAMMING Cooling Program for ALL Days of the Week: PERIOD TIME TEMP PERIOD TIME TEMP MOR DAY EVE NHT 5:00 AM 9:00 AM 4:00 PM 10:00 PM 70 70 70 64 MOR DAY EVE NHT 5:00 AM 9:00 AM 4:00 PM 10:00 PM 78 82 78 78 Now look at the factory preprogrammed times and temperatures shown below. If this pr[...]

22 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[...]

23 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[...]

24 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[...]

25 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 designa- tion ( AM begins at midnight; PM begins at noon). 5. Press SET DAY once. The display will show the day of the week as an abbreviation ( MO for Monday, TU for Tuesday, etc[...]

26 1. Press SYSTEM SWITCH until HEAT is displayed. 2. Press VIEW PRGM once. 5 DAY (indicating weekday 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. EXAMPLE: 5 DAY This display window sh[...]

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 ). 10. When you have completed entering your heating program, press RUN PRG[...]

28 1. Press SYSTEM SWITCH until COOL appears. 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. 1. Press SYSTEM SWITCH until HEAT is displayed. 2. Press a[...]

29 QUESTIONS AND ANSWERS 1. How can I permanently change a part of my program? Press VIEW PRGM until you reach the time/tempera- ture schedule you want. Then press TIME FWD or TIME BACK and and to change 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 sam[...]

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. When electricity is restored, the clock will reset itself to 12:00 PM (n[...]

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 SYSTEM SWITCH until OFF is displayed and replace the [...]

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. What does this mean? The thermostat is not being supplied with[...]

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. Check your programming (be sure that the times you programmed a[...]

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, simply press SYSTEM SWITCH until the display shows OFF . This will not affect your thermostat’s programming in any way. To turn the sys- tem back on, press SYSTEM SWITCH [...]

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[...]

Part No. 37-5098B Replaces 37-5098A 9518 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 R[...]