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Multi-stage/Heat Pump Electronic Digital Thermostat WHITE-RODGERS Operator: Save this booklet for future use! INST ALLA TION & OPERA TION GUIDE 1F92W -51.
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.
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 .
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 .
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.
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.
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.
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.
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.
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 Y.
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.
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.
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.
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 cir.
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 AUX.
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) .
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.
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.
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 ).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 exampl.
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.
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:.
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.
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.
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 .
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.
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 .
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.
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.
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.
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.
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 .
50 NOTES.
51 NOTES.
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.
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