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White Rodgers 1F92W-51 - page 1
Multi-stage/Heat Pump Electronic Digital Thermostat WHITE-RODGERS Operator: Save this booklet for future use! INST ALLA TION & OPERA TION GUIDE 1F92W -51 ...
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2 About Your New Thermostat . . . Your new White-Rodgers Digital Multi-stage/Heat Pump 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 o ...
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3 In This Guide . . . OPERATING YOUR THERMOSTAT ............... 22 PARTS OF THE THERMOSTAT The Back Of the Thermostat Body The Display The Thermostat Buttons OPERATING FEATURES PROGRAMMING YOUR THERMOSTAT ........................................... 34 PLANNING FOR YOUR NEEDS ENTERING YOUR PROGRAM Set Current Time and Day Enter Heating Program Enter ...
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4 YOUR NEW THERMOSTAT’S FEATURES • Five-day/two-day programming capability • Simultaneous heat and cool program storage • Four separate time and temperature settings per 24-hour period • Up to 2 stages of heat and up to 1 stage of cool • Computed Energy Management Recovery (EMR) • Automatic changeover (operator selectable) • Two hou ...
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White Rodgers 1F92W-51 - page 5
5 PRECAUTIONS If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor, electrician, or someone familiar with basic electricity and wiring. Do not exceed the specification ratings. All wiring must conform to local and national electri- cal codes and ordinances ...
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6 THE THERMOSTAT’S SPECIFICATIONS THIS CONTROL IS DESIGNED FOR USE WHERE BOTH SIDES OF THE TRANSFORMER ARE PRESENT AT THE THERMOSTAT (both the hot and common sides of the 24 VAC end of the transformer.) ELECTRICAL DATA Electrical Rating: 20 to 30 VAC 50/60 Hz. 0.01 to 1.5 Amps (Load per terminal) 2.5 Amps Maximum Total Load (All terminals combine ...
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White Rodgers 1F92W-51 - page 7
7 INSTALLING YOUR THERMOSTAT NEW INSTALLATION WE RECOMMEND THAT YOU PROGRAM THE THERMOSTAT WITH BATTERY INSTALLED BE- FORE ATTACHING ON SUBBASE. SEE OPERA- TION SECTION FOR PROGRAMMING INSTRUC- TIONS. SELECT THERMOSTAT LOCATION Proper location insures that the thermostat will provide a comfortable building temperature. Ob- serve the following gener ...
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White Rodgers 1F92W-51 - page 8
8 1. Probe for obstructions in partition before drilling 1 ⁄ 2 ” hole in wall at selected location. Take up quarter round and drill a small guide hole for sighting (see fig. 1). From basement, drill 3 ⁄ 4 ” hole in partition floor next to guide hole. In buildings without basements, drill 1 ⁄ 2 ” hole through ceiling and into partition f ...
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White Rodgers 1F92W-51 - page 9
9 REPLACEMENT INSTALLATION REMOVE OLD THERMOSTAT 1. Shut off electricity at the main fuse box until installation is complete. Verify power is off with a voltmeter. 2. Remove the front cover of the old thermo- stat. With wires still attached, remove wall plate from the wall. 3. If the old thermostat has a wall mounting plate, remove the thermostat a ...
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White Rodgers 1F92W-51 - page 10
10 TABLE 2. TERMINAL REFERENCE LABEL NUMBER NEW THERMOSTAT TERMINAL DESIGNATION FUNCTION OLD THERMOSTAT TERMINAL DESIGNATION (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) G C L R O B E1 E2 Y1 Y2 W1 W2 W3 Fan Output Transformer 24 VAC Common (this terminal not used) Transformer 24 VAC Hot Changeover Output (Cooling) Changeover Output (Heat ...
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White Rodgers 1F92W-51 - page 11
11 ATTACH SUBBASE TO WALL 1. Remove the packing material from the thermo- stat. Place the fingers of one hand on the center top and bottom portion of the thermostat. Grasp the subbase in the other hand on the top and bottom center, and gently pull straight out (see fig. 2). The thermostat has pin and socket con- nectors. Forcing or prying on the th ...
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White Rodgers 1F92W-51 - page 12
12 DO NOT EXCEED MAXIMUM VOLTAGE OR CURRENT RATINGS. FIRE, PERSONAL IN- JURY, AND/OR EQUIPMENT DAMAGE COULD RESULT. To prevent electrical shock and/or equip- ment damage, disconnect electrical power at the main fuse box until installation is complete. Verify power is off with a volt- meter. CAUTION ! Mounting hole Pull wires through this opening Co ...
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White Rodgers 1F92W-51 - page 13
13 C R G B O Changeover Energized In Heat Changeover Energized In Cool Compressor Contactor Stage 1 Fan Relay Heat Relay Stage 1 Heat Relay Stage 2 Thermostat Control Circuit 24 VAC 120 VAC Hot Neutral THERMOSTAT SYSTEM Y1 W1 W2 Figure 4. Typical wiring diagram for single transformer systems E1 Emergency Relay Constant Output E2 Emergency Relay Swi ...
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White Rodgers 1F92W-51 - page 14
14 NOTE IF SAFETY CIRCUITS ARE IN ONLY ONE OF THE SYSTEMS, REMOVE THE TRANSFORMER OF THE SYSTEM WITH NO SAFETY CIRCUITS. Figure 5. Typical wiring diagram for two transformer systems with NO safety circuits DEPENDING ON SYSTEM REQUIRE- MENTS, REPLACE WITH A 75VA TRANSFORMER, IF NEEDED TWO COMMONS MUST BE JUMPERED TOGETHER! CUT AND TAPE OFF! C R G B ...
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White Rodgers 1F92W-51 - page 15
15 Figure 6. Typical wiring diagram for two transformer systems with safety circuits in BOTH systems TWO COMMONS MUST BE JUMPERED TOGETHER! C R G B O THERMOSTAT SYSTEM Y1 W2 E1 E2 HEAT PUMP SYSTEM AUXILIARY HEATING SYSTEM W1 Changeover Energized In Cool Changeover Energized In Heat Fan Relay Compressor Contactor Stage 1 Emergency Relay Switched Out ...
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White Rodgers 1F92W-51 - page 16
16 ATTACH THERMOSTAT TO SUBBASE WE RECOMMEND THAT YOU SET OPTION SWITCHES TO DESIRED POSITION BEFORE AT- TACHING ON SUBBASE (see OPERATION ). WE ALSO RECOMMEND THAT YOU PROGRAM THE THERMOSTAT WITH BATTERY INSTALLED BE- FORE ATTACHING ON SUBBASE (see OPERA- TION section for programming instructions) . USE SYSTEM HEAT-OFF-COOL-AUTO TO TURN THERMOSTAT ...
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White Rodgers 1F92W-51 - page 17
17 SYSTEM CONFIGURATION ANY TIME AN OPTION SWITCH IS CHANGED, THE 9 VOLT ENERGIZER ® BATTERY MUST BE REMOVED FOR A MINIMUM OF 2 MINUTES. NOTE SET OPTION SWITCHES 1. Single Stage Compressor Heat Pump — with reversing valve energized through B or O termi- nals 2. Two Compressor (Split) System Figure 8. Back of thermostat Option switches 9-pin conn ...
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White Rodgers 1F92W-51 - page 18
18 5. Automatic Changeover from Heat to Cool The battery maintains the stored program in the event of a power failure. When attached to the wall with 24 VAC power applied, the thermostat will function normally without the battery. However, the program will be lost in the event of power interruption or failure if the battery is not installed. When p ...
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19 CHECK THERMOSTAT OPERATION When checking thermostat, option switch #4 for automatic changeover must be in the OFF position. This will allow temporary setting of heat set points above cool settings. After system checkout, reset option switch to ON position if automatic changeover is desired (see SET OPTION SWITCHES ). FAN OPERATION 1. Turn on pow ...
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20 COOLING SYSTEM OPERATION To prevent compressor and/or property damage, if power to the compressor has been off or interrupted for more than 1 hour and the outdoor temperature is be- low 50 ° F, DO NOT operate the system for at least the amount of time the compres- sor was off! This will allow the compres- sor heaters to warm the compressor oils ...
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21 LOCKOUT BYPASS OPTION FOR QUALIFIED SERVICE TECHNICIANS’ USE ONLY. OPERATORS SHOULD NOT USE THIS FEATURE DUE TO POSSIBILITY OF EQUIPMENT OR PROPERTY DAMAGE, OR PERSONAL INJURY. DO NOT USE THE LOCKOUT BYPASS OP- TION UNLESS THE COMPRESSOR OIL HEATERS HAVE BEEN OPERATIONAL FOR 6 HOURS AND THE SYSTEM HAS NOT BEEN OPERATIONAL FOR AT LEAST 5 MINUTE ...
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22 OPERATING YOUR THERMOSTAT Before you begin programming your new 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 thermostat so that you can easily program it. Your thermostat consists of two ...
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White Rodgers 1F92W-51 - page 23
23 nine pin connectors on the lower portion of the thermostat back. Gently push until the snap connec- tors engage (see fig. 10). DO NOT FORCE OR PRY THE THERMOSTAT, as this may damage the unit. PARTS OF THE THERMOSTAT The Back of the Thermostat Body Turn the thermostat body over. On the back are the 9 volt Energizer ® alkaline battery and the opt ...
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24 battery will provide power for all functions. If the word BAT is displayed continuously (non-flash- ing), the thermostat is not being supplied with 24 VAC power and is being powered by the battery alone. Use SYSTEM HEAT-OFF-COOL-AUTO to turn thermostat OFF before removing thermostat from the wall to re- place the battery. 2. You may adjust optio ...
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White Rodgers 1F92W-51 - page 25
25 replaced. The word BAT will be displayed con- tinuously (non-flashing) when the thermostat is operating on battery power only. 6 FAN is displayed when the blower is operat- ing continuously, regardless of heating or cool- ing system cycling. FAN is displayed during automatic fan operation (when the blower cycles with the heating or cooling syste ...
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White Rodgers 1F92W-51 - page 26
26 The Thermostat Buttons and Lights 7 Sets the system mode ( HEAT ing, EMER gency backup, OFF , COOL ing, or AUTO matic changeover [user selectable feature]). 8 Selects fan operation (see #6, previous page). 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 ...
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White Rodgers 1F92W-51 - page 27
27 setpoint temperature — there is a 5 to 10 minute startup delay on the first emergency cycle). AUX light indicates that the auxiliary system is operating. 18 EMER light indicates that the system is in the emergency mode (the heat pump compressor is off and the auxiliary system is maintaining 10 11 12 13 14 15 16 17 18 9 7 8 5 DAY FAN EMER. AUX. ...
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White Rodgers 1F92W-51 - page 28
28 OPERATING FEATURES Now that you are familiar with the thermostat display and buttons, read the following information to learn about the many features of the thermostat. • COMPUTED ENERGY MANAGEMENT RE- COVERY (EMR) - The thermostat’s microcom- puter automatically calculates the time it will take to change the temperature to the next program ...
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White Rodgers 1F92W-51 - page 29
29 affect thermostat operation. Replace the bat- tery, re-program the thermostat if necessary, put the thermostat back on the wall, and use SYSTEM HEAT-OFF-COOL-AUTO to set thermostat for desired opera- tion. To set the thermostat for automatic changeover after programming, press SYSTEM HEAT-OFF-COOL-AUTO to set the thermostat to AUTO (the setpoint ...
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White Rodgers 1F92W-51 - page 30
30 AUTOMATIC CHANGEOVER (OFF) Switch #1 set at installation ( DO NOT CHANGE ) Switch #2 set at installation ( DO NOT CHANGE ) Switch #3 set at installation ( DO NOT CHANGE ) Switch #4 OFF • TWO HOUR TEMPERATURE OVERRIDE — Press or until the display shows the temperature you want. The thermostat will over- ride current programming and keep the r ...
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White Rodgers 1F92W-51 - page 31
31 gram. Press HOLD TEMP . HOLD will be displayed. Then choose the desired hold temperature by pressing or . The thermostat will hold the room temperature at the selected set- ting until you press HOLD TEMP to start program op- eration again. This feature is ideal for energy conservation when the building is unoccupied for an extended period of tim ...
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White Rodgers 1F92W-51 - page 32
32 cycles are too long, press TIME BACK to decrease the cycle time. To set COOL anticipation, press SET CLOCK and SET DAY at the same time again. The display will show COOL 14 (factory preprogrammed cooling anticipation). Use TIME FWD and TIME BACK to adjust anticipation. To set AUXILIARY heat anticipation (not applicable to multi-stage use), press ...
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White Rodgers 1F92W-51 - page 33
33 Auxiliary heat is functional during the compres- sor lockout and can be used as needed to maintain room temperature. • COMPRESSOR LONG TERM CYCLE PRO- TECTION — If your system begins to operate too soon after an extended power outage, the compressor may be damaged due to crankcase oil temperature change. This thermostat has a built-in time d ...
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White Rodgers 1F92W-51 - page 34
34 PROGRAMMING YOUR THERMOSTAT PROGRAMMING PROGRAMMING Now you are ready to program your thermostat. This section will help you plan and program your thermo- stat to meet your needs. For maximum comfort and efficiency, keep the fol- lowing guidelines in mind when planning your pro- gram. • When heating (cooling) your building, program the tempera ...
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White Rodgers 1F92W-51 - page 35
35 b. What temperature should the building be at this time? (heating? cooling?) These will be your MOR (morning) temperature settings. 2a. What time do the building occupants reach a maximum activity level (using lights, equipment, meeting rooms, etc.)? b. What temperature should the building be at this time? These will be your DAY temperature set- ...
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White Rodgers 1F92W-51 - page 36
36 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) tempera- ture 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 y ...
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White Rodgers 1F92W-51 - page 37
37 and cooling temperatures for consecutive time peri- ods. You can choose start times, heating tempera- tures, 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 sta ...
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White Rodgers 1F92W-51 - page 38
38 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 ...
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White Rodgers 1F92W-51 - page 39
39 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 68° 65° 70° 65° 76° 78° 72° 78° 7:00 AM 11:00 AM 6:00 PM 11:30 PM 7:00 AM 12:30 PM 6:0 ...
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White Rodgers 1F92W-51 - page 40
40 Set Current Time and Day 1. Press SET CLOCK once. The display will show min- utes only. EXAMPLE: 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/P ...
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White Rodgers 1F92W-51 - page 41
41 want to stop programming at any time, simply press RUN PRGM to resume program operation. 1. Press SYSTEM HEAT-OFF-COOL-AUTO until HEAT is displayed. 2. Press VIEW PRGM once. 5 DAY (indicating weekday program), and MOR , representing the morning heating period, will appear in the display. Also displayed are the currently programmed start time for ...
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White Rodgers 1F92W-51 - page 42
42 9. After entering your weekday heating program, repeat steps 1 through 8 for your weekend pro- gramming (keep in mind that for weekend pro- gramming, 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 re ...
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White Rodgers 1F92W-51 - page 43
43 1. Press SYSTEM HEAT-OFF-COOL-AUTO until COOL is displayed. 2. Follow the procedure for entering your heating program, using your selected cooling times and temperatures. CHECK YOUR PROGRAMMING Follow these steps to check your thermostat pro- gramming one final time before beginning thermo- stat operation. 1. Press SYSTEM HEAT-OFF-COOL-AUTO unti ...
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White Rodgers 1F92W-51 - page 44
44 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 or and TIME FWD and TIME BACK to change the pro- gram. See PROGRAMMING YOUR THERMO- STAT . 2. How can I have no change in temperature from one time period to another? Simply select the s ...
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White Rodgers 1F92W-51 - page 45
45 4. What happens if the electricity goes off or is manually shut off? If you have not installed a 9 volt alkaline battery, the display will go blank and the program will be lost in approximately one minute. When electric- ity is restored, the thermostat will maintain a heating temperature of 64 ° F and a cooling tem- perature of 82 ° F until yo ...
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White Rodgers 1F92W-51 - page 46
46 the wall. Then press SYSTEM HEAT-OFF-COOL-AUTO for desired sys- tem operation, and press RUN PRGM to begin the factory preset program. Or you may re-program the thermostat, then replace it on the wall. To prevent further static discharge problems, touch another object to release static build-up before touching the thermostat. See OPERAT- ING YOU ...
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White Rodgers 1F92W-51 - page 47
47 10. Why won’t the system turn on, even though the thermostat display is functioning nor- mally? Either the compressor lockout feature is in op- eration or the thermostat is not currently calling for heat or cool. Wait about 5 minutes for the compressor lockout to expire. If the system is still not running, read the cautionary statement be- low ...
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White Rodgers 1F92W-51 - page 48
48 • The compressor lockout feature is operat- ing; wait about 5 minutes for system to begin running. See OPERATING YOUR THER- MOSTAT . 12. Why does the blower fan keep running after the system has turned off? • You have programmed the fan to run con- tinuously during this period. See PROGRAM- MING YOUR THERMOSTAT . • The blower delay feature ...
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White Rodgers 1F92W-51 - page 49
49 15. I live in an area where daylight savings time is observed. How do I change the thermostat clock twice a year without affecting thermo- stat programming? To change your clock, follow the instructions for setting current time and day. See ENTERING YOUR PROGRAM . Thermostat programming is not affected when you change the clock. 17. Do I have to ...
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50 NOTES ...
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White Rodgers 1F92W-51 - page 51
51 NOTES ...
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White Rodgers 1F92W-51 - page 52
Part No. 37-5414A 9513 If you need further information about this product, please write to White-Rodgers Division, Emerson Electric Co. 9797 Reavis Road St. Louis, MO 63123-5398 Attn: Technical Service Department ...
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