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OPERATION GUIDE
1F90-51
5 Day/2 Day Electronic
Digital Thermostat
WHITE-RODGERS
Operator: Save this booklet for future use!
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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. If you have questions, write to us at the address shown on the back cover of this manual. 2
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In This Guide . . . YOUR NEW THERMOSTAT’S PROGRAMMING YOUR FEATURES ............................................ 4 THERMOSTAT .................................... 19 OPERATING YOUR THERMOSTAT ......... 5 PLANNING FOR YOUR NEEDS PARTS OF THE THERMOSTAT ENTERING YOUR PROGRAM The Back Of the Thermostat Body Set Current Time and Day The Display Enter Heating Program The Thermostat Buttons Enter Cooling Program OPERATING FEATURES CHECK YOUR PROGRAMMING QUESTIONS AND ANSWERS ................. 29 Opera
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YOUR NEW THERMOSTAT’S FEATURES • Separate 5-day (weekday) and 2-day (week- • Adjustable cycle times end) setback programming • Compressor short cycle protection • Simultaneous heat and cool program storage • Programmable blower control • Four separate time/temperature settings per • Blower delay in the cooling cycle 24-hour period • Audio and visual prompting during operation • Computed Energy Management Recovery • Two hour temperature override (EMR) • Manual program override (HOLD tempera- • Ar
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OPERATING YOUR THERMOSTAT Before you begin programming your thermo- The subbase is attached to the wall, but you can stat, you should be familiar with its features and remove the thermostat body for easy program- with the display and the location and operation ming. To remove the thermostat body from the of the thermostat buttons. The information in subbase, grasp the thermostat body and gently this section will help you become familiar with pull it straight out from the subbase. To attach your
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If the word BATTERY is flashing in the display PARTS OF THE THERMOSTAT window, the batteries are low and should be ® The Back of The Thermostat Body replaced with fresh “AA” Energizer alkaline batteries. Turn the thermostat body over. On the back are ® the 3 “AA” Energizer alkaline batteries. CAUTION ! ® The “AA” Energizer alkaline batteries provide power to the thermostat when the 24 VAC power SYSTEM Use to turn the thermostat OFF SWITCH is interrupted (for example, when you remove before remo
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S3 W14 Other than and , the buttons are 6-pin connector Batteries 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. 2-pin connector BACK OF THERMOSTAT BODY 7
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The Display The word BATTERY flashes on the display 5 Continuously displays system mode (HEAT, when the “AA” alkaline batteries are weak 1 and should be replaced. The word BAT- OFF, COOL, HOLD). During programming, TERY is displayed continuously (non-flash- the program period is displayed (MOR, DAY, ing) when thermostat is running on battery EVE, or NHT). power only. Alternately displays room temperature (F 2 FAN ON is displayed when the blower is 6 denotes degrees Fahrenheit and C denotes oper
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5 DAY FAN AUTO WHITE-RODGERS DIGITAL COMFORT SET II TIME SET VIEW HOLD SYSTEM FWD CLOCK PRGM TEMP SWITCH HEAT-OFF-COOL-AUTO FAN TIME SET RUN ADV BACK DAY PRGM PRGM SWITCH ON-AUTO 1 2 3 3 2 DAY FAN AUTO 5 DAY FAN ON BATTERY 4 6 4 6 2 5 9
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The Thermostat Buttons Used to initiate or review thermostat pro- 12 Sets the system mode (HEATing, OFF, or gramming. 7 COOLing). Used to start program operation after pro- 13 gramming. Also used to return thermostat to Selects fan operation (see #6, above). This 8 program operation after being in HOLD button is also used to program the fan to run mode. continuously during a program period. Used to manually override programming to 14 Runs display forward or backward through 9 hold at a selected
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(Blue arrow) Lowers temperature set- The red indicator light glows whenever heat- 17 18 ting (40°F or 4°C minimum). ing, cooling, or fan are in operation. 17 16 18 5 DAY FAN AUTO WHITE-RODGERS DIGITAL COMFORT SET II SYSTEM TIME SET VIEW HOLD 7 FWD CLOCK PRGM TEMP SWITCH HEAT-OFF-COOL-AUTO FAN TIME SET RUN ADV 8 BACK DAY PRGM PRGM SWITCH ON-AUTO 9 10 11 12 13 14 15 11
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next program period, beginning at 6:00 AM, OPERATING FEATURES you have programmed a temperature of Now that you are familiar with the thermostat 70°F. The thermostat will automatically ac- display and buttons, read the following informa- tivate the heating system at about 5:00 AM, tion to learn about the many features of the so that the programmed 70°F temperature thermostat. is reached by about 6:00 AM. • COMPUTED ENERGY MANAGEMENT The thermostat is configured at the factory RECOVERY (EMR) — Th
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• HOLD TEMPERATURE — The thermostat key while in the DAY program will advance can hold any temperature within its range the thermostat to the EVE program, which for an indefinite period, without reverting to will remain in effect until the NHT program begins). HOLD the program. Press . HOLD will be dis- TEMP TIME • °F/°C CONVERTIBILITY — Press and played. Then choose the desired hold tem- FWD perature by pressing or . The TIME at the same time until the temperature BACK thermostat will hold t
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TIME CAUTION heat cycles are too long, press to de- ! BACK A cooling anticipation setting of less than crease the cycle time. To set cooling antici- 10 may cause decreased compressor life. SET SET pation, press and at the same time CLOCK DAY SET again. The display will show COOL 14 (fac- To adjust heat anticipation, press and CLOCK tory preprogrammed cooling anticipation). SET at the same time. The display will show DAY You may select any anticipation setting from TIME TIME HEAT 5 (this is
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• AUDIO PROMPTING — Each time you • COMPRESSOR SHORT CYCLE PROTEC- press a button, the thermostat will beep. TION — To protect your compressor from potential damage due to rapid cycling, this • BACKLIT DISPLAY — When you press thermostat has a built-in delay of 5 minutes any button on the thermostat, the display is between cooling cycles. The following may lit for approximately eight seconds. cause a time delay in COOL: • SYSTEM INDICATOR LIGHT — The red a) Return of power after a power outage.
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PROGRAMMING PROGRAMMING YOUR THERMOSTAT Now you are ready to program your thermostat. PLANNING FOR YOUR NEEDS This section will help you plan your thermostat’s First, answer the following questions to help you program to meet your needs. decide what your needs are. If you are using the For maximum comfort and efficiency, keep the thermostat for a commercial application (a store, following guidelines in mind when planning your office building, etc.), answer questions 1 through program. 4. If you
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b. What temperature should the building be at b. What temperature should the house be at this time? These will be your DAY tempera- this time? These will be your MOR (morn- ture settings. ing) temperature settings. 3a. What time do the building occupants reach 6a. What time does the last person leave the a minimum activity level (limited personnel house in the morning? in building)? b. What temperature should the house be at b. What temperature should the building be at this time? These will
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Now look at the factory preprogrammed times choose start times, heating temperatures, and and temperatures shown below. If this program cooling temperatures independently for both weekday and weekend programs (for example, RUN will suit your needs, simply press to begin PRGM you may select 5:00 AM and 70° as the weekday running the factory preset program. MOR heating start time and temperature, and choose 7:00 AM and 76° as the weekday MOR If you want to change the preprogrammed times cooling s
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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 19
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SAMPLE Heating/Cooling Schedule Plan WEEKEND (2 DAY) WEEKDAY (5 DAY) Start Start Time Temperature Time Temperature MOR HEAT 5:30 AM 68°F 7:00 AM 68°F DAY HEAT 8:00 AM 65°F 11:00 AM 70°F EVE HEAT 5:00 PM 70°F 6:00 PM 70°F NHT HEAT 10:30 PM 65°F 11:30 PM 65°F MOR COOL 6:30 AM 76°F 7:00 AM 76°F DAY COOL 2:00 PM 78°F 12:30 PM 74°F EVE COOL 5:00 PM 72°F 6:00 PM 72°F NHT COOL 10:30 PM 78°F 11:30 PM 78°F 20
