White Rodgers 7904 Installation and Operation Manual
Contents
1. return to the change temperature mode 6 Press VIEW PRGM once The currently programmed start time and setpoint temperature for the 2nd heating program period will appear 7 Repeat steps 4 and 5 to select the start time and heating temperature for the 2nd heating program period 8 Repeat steps 4 through 6 for the 3rd and 4th heating program periods Weekday heating programs are now complete 9 Press VIEW PRGM once SA SU indicating weekend program will appear in the display along with the start time for the 1st heating period and the currently programmed temperature 10 Repeat steps 4 through 8 to complete weekend heating programming 11 When you have completed entering your heating program press RUN PRGM Enter Cooling Program If the outside temperature is below 50 F disconnect power to the cooling system before programming Energizing the air conditioner compressor during cold weather may cause personal injury or property damage 1 Move SYSTEM switch to COOL position 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 programming one final time before beginning thermostat operation 1 Move SYSTEM switch to HEAT position 2 Press VIEW PRGM to view the 1st weekday heating period time and temperature Each time you press VIEW PRGM the next heating period time and temperature2. 0 00 PM 78 F If you want to change the preprogrammed times and tempera tures follow these steps Determine the time periods and heating and cooling tempera tures for your weekday and weekend programs You must program four periods for both the weekday and weekend pro gram However you may use the same heating and cooling SAMPLE Heating Cooling Schedule Plan WEEKDAY 5 DAY WEEKEND 2 DAY Period dee eee Time Temperature Time Temperature temperatures for consecutive time periods You can 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 1st period heating start time and temperature and also choose 7 00 AM and 76 as the weekday 1st period cooling start time and temperature Use the table at the bottom of the page to plan your program time periods and the temperatures you want during each period You may also want to look at the sample program table to get an idea of how the thermostat can be programmed Entering Your Program Follow these steps to enter the heating and cooling programs you have selected NOTE The thermostat should be programmed in the 12 hour format then switched to the 24 hour format if desired see OPERAT ING FEATURES for more information Set Current Time and Day 1 Press SET TIME button once The display will show the hour only EXAMPLE tc ew 2
3. APPLICATIONS For use with Standard heat cool or heat only systems Electric heat systems Gas or oil fired systems Gas systems with intermittent ignition devices I 1 D and or vent dampers e Hydronic hot water or steam systems e Single stage heat pump systems e Millivolt systems DO NOT USE WITH e Multi stage systems Systems exceeding 30 VAC and 1 5 amps e 3 wire zoned hydronic heating systems PART NO 37 5599B Replaces 37 5599A 9731 INSTALLATION REMOVE OLD THERMOSTAT 1 Shut off electricity at the main fuse box until installation is complete Ensure that electrical power is disconnected 2 Remove the front cover of the old thermostat With wires still attached remove wall plate from the wall If the old thermostat has a wall mounting plate remove the thermostat and the wall mounting plate as an assembly 3 Identify each wire attached to the old thermostat using the labels enclosed with the new thermostat 4 Disconnect the wires from old thermostat one at a time DO NOT LET WIRES FALL BACK INTO THE WALL 5 Install new thermostat using the following procedures ELECTRIC HEAT OR SINGLE STAGE HEAT PUMP SYSTEMS Read entire paragraph before setting electric heat switch If you are unsure of your application contact a qualified serviceperson If you have a single stage heat pump system OR your system uses central electric heat then you must move the switch on the back of the thermostat base to the elect
4. ATA Electrical Rating 8 to 30 VAC 50 60 Hz or D C 0 05 to 1 5 Amps Load per terminal 1 5 Amps Maximum Total Load All terminals combined THERMAL DATA Setpoint Temperature Range 45 F to 90 F 7 C to 32 C Operating Ambient Temperature Range 32 F to 105 F Operating Humidity Range 0 to 90 RH non condensing Shipping Temperature Range 40 F to 150 F EE WHITE RODGERS DIVISION EMERSON ELECTRIC CO 9797 REAVIS ROAD mason ST LOUIS MISSOURI 63123 5398 Printed in U S A DESCRIPTION e LCD continuously displays set point and alternately dis plays time and room temperature Temperature override until next program period Manual program override HOLD temperature User may select either 12 or 24 hour clock display e F C convertibility Temperature range 45 to 90 F Standard five terminals for single or two transformer sys tems Band O terminals for single stage heat pumps or damper operation PRECAUTIONS To prevent electrical shock and or equipment dam age disconnect electric power to system at main fuse or circuit breaker box until installation is complete Do not use on circuits exceeding specified voltage Higher voltage will damage control and could cause shock or fire hazard Do not short out terminals on gas valve or primary control to test Short or incorrect wiring will damage thermostat and could cause personal injury and or property damage SPECIFICATIONS
5. Press and hold either or m until you reach the correct hour and AM PM designation AM begins at midnight PM begins at noon 3 Press SET TIME once The display window will show the minutes only 4 Press and hold either or E until you reach the correct minutes 5 Press SET TIME once The display will show the day of the week 6 Press or T until you reach the current day of the week 7 Press RUN PRGM once The display will show the correct time and room temperature alternately Enter Heating Program 1 If you want to change the display from Fahrenheit to Celsius or vice versa press SET TIME and HOLD TEMP at the same time 2 Move the SYSTEM switch to HEAT 3 Press VIEW PRGM once MO TU WE TH FR indicating weekday program will appear in the display Also displayed are the currently programmed start time for the 1st heating period and the currently programmed temperature flash ing EXAMPLE This display window shows that for the 1st weekday period the start time is 6 00 AM and 68 is the programmed temperature this example reflects factory preprogramming 4 Press R or to change the displayed temperature to your selected temperature for the 1st heating program period 5 Press SET TIME once the programmed time will flash Press R or S until your selected time appears The time will change in 15 minute increments When your selected time is displayed press SET TIME again to
6. WHITE RODGERS Model No 7904 Programmable Electronic Digital Thermostat INSTALLATION AND OPERATION INSTRUCTIONS Operator Save these instructions for future use FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND OR PROPERTY DAMAGE Your new White Rodgers 5 Day 2 Day Digital Thermostat uses the technology of a solid state microcomputer to provide precise time temperature control This thermostat offers you the flexibil ity to design heating and cooling programs that fit your needs Features e Battery powered included Separate 5 day weekday and 2 day weekend programming Simultaneous heat and cool program storage Preprogrammed temperature control Four separate time temperature settings per 24 hour pe riod 3 AA Energizer alkaline batteries e e e e This thermostat is intended for use with a low voltage system do not use this thermostat with a line voltage system If in doubt about whether your wiring is millivolt line or low voltage have itinspected by a qualified heating and air conditioning contractor or electrician Do not exceed the specification ratings All wiring must conform to local and national electrical codes and ordinances This control is a precision instrument and should be handled carefully Rough handling or distorting components could cause the control to malfunction ELECTRICAL D
7. ceperson Fan Operation If your system does not have a G terminal connection skip to Heating System 1 Turn on power to the system 2 Move fan switch to ON position The blower should begin to operate 3 Move fan switch to AUTO position The blower should stop immediately Heating System 1 Move SYSTEM switch to HEAT position If the heating system has a standing pilot be sure to light it 2 Press to adjust thermostat setting above room tempera ture The heating system should begin to operate 3 Press 8 to adjust temperature setting below room tempera ture The heating system should stop operating Before you begin programming your thermostat you should be familiar with its features and with the display and the location and operation of the thermostat buttons Your thermostat consists of two parts the thermostat cover and the base To remove the cover gently pull it straight out from the base To replace the cover line up the cover with the base and press gently until the cover snaps onto the base THE THERMOSTAT BASE Other than R and i the following buttons and switches are located behind the door on the bottom of the thermostat cover see fig 11 Pull the door down to open it The Thermostat Buttons and Switches O Red arrow Raises temperature setting Blue arrow Lowers temperature setting 8 SET TIME button 4 VIEW PRGM program button 6 RUN PRGM program button 6 HOLD TEMPerature b
8. ends to the left If the word BATTERY is displayed the batteries are low and should be replaced with fresh AA Energizer alkaline batteries Electric Gas switch Figure 1 Back of thermostat base Alkaline batteries 3 AA install ends to the left Screw anchors Mounting holes Figure 2 Thermostat base HYDRONIC HOT WATER OR STEAM HEATING SYSTEMS This thermostat is set to operate properly if you have a forced air heating system If you have a hydronic heating system a system that heats with hot water or steam you must set the thermostat to operate properly with your system To change the setting press and hold SET TIME and VIEW PRGM buttons at the same time until the correct setting is displayed A for forced air H for hydronic systems If you do not press both buttons at the same time A or H will not be displayed If this happens press RUN PRGM then press and hold SET TIME and VIEW PRGM at the same time JUMPER WIRE THERMOSTAT LO O w SYSTEM System 24 VAC Transformer or RED jumper wire provided with thermostat must be connected between thermo stat s RH and RC terminals for proper thermostat oper Thermopile ation with this system Neutral TRANSFORMER Figure 3 Typical wiring diagram for heating only Figure 7 Typical wiring diagram for 2 wire single transformer systems or millivolt systems heat cool 4 wire single transformer s
9. in lockout mode Alternately displays current time and temperature BATTERY is displayed when the 3 AA batteries are low and should be replaced Nothing else will be displayed E Displays currently programmed set temperature this is blank when SYSTEM switch is in the OFF position The word HOLD is displayed when the thermostat is in the HOLD mode OPERATING FEATURES Now that you are familiar with the thermostat buttons and display read the following information to learn about the many features of the thermostat e SIMULTANEOUS HEATING COOLING PROGRAM STORAGE When programming you can enter both your heating and cooling programs atthe same time There is no need to reprogram the thermostat at the beginning of each season TEMPERATURE OVERRIDE Press R or until the display shows the temperature you want The thermostat will override current programming and keep the room temperature at the selected temperature until the next program period begins Then the thermostat will automati cally revert to the program HOLD TEMPERATURE The thermostat can hold any temperature within its range for an indefinite period without reverting to the programmed temperature Press HOLD TEMP button HOLD will be displayed Then choose the desired hold temperature by pressing R or f The thermostat will hold the room temperature at the selected setting until you press RUN PRGM button to start program operation agai
10. n F C CONVERTIBILITY Press and hold SET TIME and HOLD TEMP buttons until the temperature display is in Celsius C To display Fahrenheit F repeat the pro cess 12 HOUR 24 HOUR CLOCK DISPLAY The clock is set to display 12 hour time which means that the clock will display AM and PM time 12 00 AM is midnight 12 00 PM is noon However you may want to display a 24 hour clock military style time The 24 hour clock display will show 1 00 PM as 13 00 2 00 PM as 14 00 and so on To change to the 24 hour clock display press and hold SET TIME and RUN PRGM buttons at the same time In the 24 hour clock mode AM and PM are not displayed Heating Cooling Schedule Plan WEEKDAY 5 DAY WEEKEND 2 DAY Period Start Start Temperature 1ST HEAT Time Time bo ano Heat 3RDHEAT jaTHweaT fstcoo fee aa es Temperature We suggest that you program the thermostat so that the heating cooling system has about 30 minutes to reach the desired temperature for example if the first person gets up at 6 00 AM program the first period to begin at 5 30 AM LOW BATTERY INDICATOR If the 3 AA alkaline batteries are low and should be replaced the display will be blank except for the word BATTERY When the batteries are low pressing any button will cause the display to operate for ten seconds After ten seconds the display will be blank except for the word BATTERY You cannot program with lo
11. ric heat position see fig 1 The electric heat position is to the left Use a small screw driver or pencil to move the switch ATTACH THERMOSTAT BASE TO WALL 1 Remove the packing material from the thermostat Gently pull the cover straight off the base Forcing or prying on the thermostat will cause damage to the unit If necessary move the electric heat switch see ELECTRIC HEAT SYSTEMS above 2 Connect wires beneath terminal screws on base using appropriate wiring schematic see figs 3 through 10 3 Place base over hole in wall and mark mounting hole locations on wall using base as a template 4 Move base out of the way Drill mounting holes 5 Fasten base loosely to wall as shown in fig 2 using two mounting screws Place a level against bottom of base adjust until level and then tighten screws Leveling is for appearance only and will not affect thermostat operation If you are using existing mounting holes or if holes drilled are too large and do not allow you to tighten base snugly use plastic screw anchors to secure subbase 6 Push excess wire into wall and plug hole with a fire resistant material such as fiberglass insulation to prevent drafts from affecting thermostat operation BATTERY LOCATION This thermostat requires 3 AA alkaline batteries to oper ate Batteries are included Install the batteries along the top of the base see fig 2 The batteries must be installed with the positive
12. utton 7 FAN switch ON AUTO SYSTEM switch COOL OFF HEAT The Display Indicates day of the week Cooling System This thermostat has a built in short term 5 minute time delay This feature is activated after the compres sor shuts down and the operator changes the setpoint within the 5 minute time period During this 5 minute period the word COOL will flash indicating that the thermostat has locked out the compressor to allow head pressure to stabilize This thermostat does not sense AC power loss and therefore does not activate the short term compressor protection feature when power is restored To prevent compressor and or property damage if the outdoor temperature is below 50 F DO NOT operate the cooling system 1 Move SYSTEM switch to COOL position 2 Press 5 to adjust thermostat setting below room tempera ture The blower should come on immediately on high speed followed by cold air circulation 3 Press R to adjust temperature setting above room tem perature The cooling system should stop operating OPERATION SETTIME VIEWPRGM RUN PRGM HOLD TEMP FANON AUTO COOL OFF HEAT Paaa 7 771 mi ee HOLD COOL Crit BATTERY Figure 11 Thermostat display buttons and switches HEAT is displayed when the SYSTEM switch is in the HEAT position COOL is displayed non flashing when the SYS TEM switch is in the COOL position COOL is displayed flashing when the compressor is
13. w batteries but you can override setpoint temperature TEMPERATURE DISPLAY ADJUSTMENT Your new thermostat has been accurately setin our factory However if you wish you may adjust your new thermostat tempera ture display to match your old thermostat This can be accomplished within a 4 range as follows 1 Press VIEW PRGM and HOLD TEMP buttons at the same time 2 Press A or N to adjust the displayed temperature to your desired setting 3 Press RUN PRGM to resume normal program operation PROGRAMMING YOUR THERMOSTAT 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 guide lines in mind when planning your program e When heating cooling your building program the tem peratures to be cooler warmer when the building is vacant or during periods of low activity During early morning hours the need for cooling is usually minimal Look at the factory preprogrammed times and temperatures shown below If this program will suit your needs simply press the RUN PRGM button to begin running the factory preset program FACTORY PREPROGRAMMING Heating Program for Cooling Program for ALL days of the Week ALL Days of the Week PERIOD TIME TEMP PERIOD TIME TEMP 1st 6 00 AM 68 F 1st 6 00 AM 78 F 2nd 8 00 AM 68 F 2nd 8 00 AM 82 F 3rd 5 00 PM 68 F 3rd 5 00 PM 78 F 4th 10 00 PM 64 F 4th 1
14. will be dis played in sequence for weekday then weekend program periods you may change any time or temperature during this procedure Press RUN PRGM Move SYSTEM switch to COOL position Repeat step 2 to check cooling temperatures Press RUN PRGM to begin program operation oO YOUR THERMOSTAT IS NOW COMPLETELY PRO GRAMMED AND READY TO AUTOMATICALLY PROVIDE MAXIMUM COMFORT AND EFFICIENCY
15. ystems Thermostat THERMOSTAT Jumper wire must be S wire Series 10 OO 9 SYSTEM added between R and B Primary Control terminals on the primary located at furnace control jumper wire not provided with thermostat Neutral HEATING TRANSFORMER 120 VAC Add jumper wire Furnace Neutral not provided with thermostat COOLING TRANSFORMER Figure 4 Typical wiring diagram for Figure 8 Typical wiring diagram for 3 wire SERIES 10 heating systems heat cool 5 wire two transformer systems OTOL Oe Teaonigi wne wine SYSTEM RED jumper wire provided with thermostat must be Heating System connected between thermo stat s RH and RC terminals for proper thermostat oper 24 VAC 120 VAC H K Neutral Reversing valve is energized when the Neutral ation wilh this system TRANSFORMER system switch is in the COOL position TRANSFORMER S Figure 5 Typical wiring diagram for Figure 9 Typical wiring diagram for heat only 3 wire single transformer systems heat pump with cool active reversing valve JUMPER JUMPER WIRE WIRE Neutral Reversing valve is energized when the Neutral system switch is in the HEAT position TRANSFORMER Figure 6 Typical wiring diagram for Figure 10 Typical wiring diagram for cool only 3 wire single transformer systems heat pump with heat active reversing valve CHECK THERMOSTAT OPERATION If at any time during testing your system does not operate properly contact a qualified servi
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