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OPERA TION GUIDE 5 Day/2 Day Electronic Digital Thermostat 1F90-51 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.
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 .
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) • Armchair programming capability • Backlit LCD displays continuous set point, time, and room temperature • 1.
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.
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. The “AA” Energizer ® alkaline batteries provide power to the thermostat when the 24 VAC power is interrupted (for example, when you remove the thermostat from the wall for programming).
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.
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.
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-RODGER.
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).
11 17 (Blue arrow) Lowers temperature set- ting (40 ° F or 4 ° C minimum). 18 The red indicator light glows whenever heat- ing, cooling, or fan are in operation.
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.
13 • HOLD TEMPERATURE — The thermostat can hold any temperature within its range for an indefinite period, without reverting to the program. Press HOLD TEMP .
14 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).
15 • 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 thermostat indicates system operation (see PARTS OF THE THERMOSTAT ).
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.
17 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 temperature should the building be at this time? These will be your EVE (evening) temperature settings.
18 choose start times, heating temperatures, and cooling temperatures independently for both 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).
19 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.
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 SAMPLE Heating/Cooling Schedule Plan 5:30 AM 8:.
21 ENTERING YOUR PROGRAM Follow these steps to enter the heating and cooling programs you have selected. We recommend that you remove the thermostat from the wall for programming (especially for entering cooling programming). Fresh “AA” En- ergizer ® alkaline batteries must be installed to perform off-wall programming.
22 5. Press SET DAY 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 TIME FWD or TIME BACK until you reach the current day of the week. 7. Press RUN PRGM once. The display will show the correct time and room temperature alter- nately.
23 7. Repeat steps 3 through 5 to select the start time and heating temperature for the week- day DAY program. 8. Repeat steps 3 through 7 for the weekday EVE and NHT heating programs.
24 Enter Cooling Program 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.
25 4. Press SYSTEM SWITCH until COOL is displayed. 5. Repeat step 2 to check cooling tempera- tures. 6. Press RUN PRGM to begin program operation. YOUR THERMOSTAT IS NOW COMPLETELY PROGRAMMED AND READY TO AUTOMATI- CALLY PROVIDE MAXIMUM COMFORT AND EFFICIENCY! Press SYSTEM SWITCH until OFF is displayed.
26 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.
27 programming at this point, press RUN PRGM to start 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.
28 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 ther- mostat on the wall. Then press RUN PRGM to begin the factory preset program.
29 use the button to move the tempera- ture below the setpoint temperature. See OPERATING YOUR THERMOSTAT . If the outside temperature is below 50 ° F, DO NOT use the button to move the temperature below the setpoint tempera- ture. Property damage may result due to compressor slugging.
30 10. Why does the blower fan keep running after the system has turned off? • You have programmed the fan to run continuously during this period. See PRO- GRAMMING YOUR THERMOSTAT .
31 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.
Part No. 37-5099B Replaces 37-5099A 9532 If you need further information on programming or operation, write to: White-Rodgers Division, Emerson Electric Co.
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