TX9100U SMART TEMP ® UNIVERSAL 7-DAY PROGRAMMABLE THERMOSTAT (FOR BOTH CONVENTIONAL AND HEAT PUMP SYSTEMS) I N S TA L L AT I O N A N D O P E R AT I N G I N S T R U C T I O N S 52103 IMPORTANT! • Please read all of these instructions carefully before beginning installation. • Label every wire terminal designation on your existing thermostat wiring before removing your old thermostat. • Ignore the color of the wires since they may not comply with any standard.
TX9100U Fan Mode Switch LCD Display Screen FAN AUTO SET ON ˚F SET HEAT FAN TEMPERATURE HEAT OFF SETBACK F̊ RUN DAY/TIME TEMP PROG 5:36P HOLD COOL Set Slide Switch SPEC PROG FILT / ENRGY COPY/ EMER NEXT System Mode Switch UP / DOWN Buttons SYSTEM COMPATIBILITY: The electrical rating for this thermostat is 1.5 Amps per terminal, with a maximum total combined load of 3.0A for all terminals combined.
FEATURES: • • • • • • • • • • • • • • • • • • • • • • • • 1 or 2-Heat / 1 or 2-Cool, 7-day programming Universal Compatibility for all system types Each day of the week can be programmed separately Exclusive LUX ® Speed Slide TM for easy programming User-selectable periods per day (2 or 4) User-selectable programmable or non-programmable operation LuxLight ® EL (Electro-Luminescent) lighted display Energy usage monitor Special program feature Programmable air filter life timer Programmable keypad lockout f
MOUNTING LOCATION: On replacement installations, mount the new thermostat in place of the old one unless the conditions listed below suggest otherwise. On new installations, please follow these general guidelines: 1. Mount the thermostat on an inside wall, about 5 ft. (1.5m) above the floor. 2. Do not locate the thermostat where air circulation is poor such as in a corner, alcove, or behind a door that is normally left open. 3.
INSTALL THERMOSTAT BASE: Large Indentation: Front Housing Release Small Indentation: Door Release THERMOSTAT TOP VIEW 1. Strip wire insulation leaving only 3/8 in. (9.5mm) bare wire ends, and clean off any corrosion present. 2. Fill the wall opening with non-combustible insulation to prevent drafts from affecting the thermostat’s normal operation. 3. Route the wires through the opening in the new thermostat base plate, and hold the base against the wall.
WIRING DIAGRAM NOTES: (Important, please read all notes before connecting wires) • If the information provided in the following wiring diagrams does not clearly represent or match your system, please refer to the “TECHNICAL ASSISTANCE” section of this manual, and contact us before removing any of your existing thermostat wiring. • All of the dashed wires shown in the wiring diagrams are either optional, or their usage depends upon your specific system type or brand.
WIRING DIAGRAMS: DIAGRAM SYSTEM TYPE / DESCRIPTION #1 CONVENTIONAL: HEATING .............................................8 1-STAGE OR 2-STAGE 2, 3, 4, 5 WIRES #2 CONVENTIONAL: HEATING .............................................9 3-WIRE ZONE VALVE 3, 4 WIRES #3 CONVENTIONAL: COOLING............................................10 1-STAGE OR 2-STAGE 3, 4, 5 WIRES #4 CONVENTIONAL: HEATING AND COOLING ...........................11 1-STAGE 4, 5 WIRES #5 CONVENTIONAL: HEATING AND COOLING ........
FAN WIRE MAY NOT BE PRESENT IN ALL SYSTEMS C C HEATER NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC SYSTEM 24V TRANSFORMER SYSTEM COMMON O P T I O N A L B* W2 W2 4 STAGE 2 B V STAGE 1 O X Y2 W1 W A RH RH F RC R Y1 G FAN G W1 1-STAGE OR 2-STAGE, HEATING ONLY (INCLUDING MILLIVOLT) (2-WIRE HEAT USE “RH” & “W1”) Factory RH-RC Jumper Wire Installed 2, 3, 4, 5 WIRES #1
Y1 RC SYSTEM 24V TRANSFORMER SYSTEM COMMON CLOSE 3-WIRE ZONE VALVE OPEN OPEN = Heat On CLOSE = Heat Off C O P T I O N A L B* C 4 W2 V B X O W1 A Y2 RH A W W1 R RH HOT WATER HEATING ONLY (WITH A 3-WIRE ZONE VALVE) NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC G Factory RH-RC Jumper Wire Installed 3, 4 WIRES #2
Y1 F SYSTEM COMMON RH SYSTEM 24V TRANSFORMER V RC R RC A STAGE 1 STAGE 2 O AIR CONDITIONER Y2 Y2 B W2 C NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC 6 Y Y1 G FAN G W1 1-STAGE OR 2-STAGE, COOLING ONLY Factory RH-RC Jumper Wire Installed 3, 4, 5 WIRES O P T I O N A L B* X C #3
RC 6 O C C SYSTEM 24V TRANSFORMER O P T I O N A L B* W2 4 HEATER B X SYSTEM COMMON Y2 W1 W A NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC AIR CONDITIONER V RH R Y1 RH F RC Y Y1 G FAN G W1 CONVENTIONAL (NON HEAT PUMP) 1-STAGE HEATING AND 1-STAGE COOLING Factory RH-RC Jumper Wire Installed 4, 5 WIRES #4
Y1 F RC R V RH RH 4 W1 W STAGE 2 Y2 Y2 AIR CONDITIONER STAGE 1 A O W2 W2 STAGE 2 HEATER STAGE 1 B X C O P T I O N A L B* C NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC SYSTEM 24V TRANSFORMER SYSTEM COMMON 6 Y Y1 G FAN G W1 CONVENTIONAL (NON HEAT PUMP) 2-STAGE HEATING AND 2-STAGE COOLING Factory RH-RC Jumper Wire Installed 4, 5, 6, 7 WIRES #5
V 6 V R RH RH HEATER W2 C C COOL 24V TRANSFORMER HEAT 24V TRANSFORMER B* B 4 O X SYSTEM COMMON Y2 W1 W A NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC AIR CONDITIONER R Y1 F RC RC Y Y1 G FAN G W1 1-STAGE HEATING AND 1-STAGE COOLING WITH TWO SEPARATE 24V TRANSFORMERS Factory RH-RC Jumper Wire REMOVED 5, 6 WIRES O P T I O N A L #6
Y1 F RH HEAT PUMP V RH RC R RC W1 O SYSTEM COMMON Y2 SYSTEM 24V TRANSFORMER A O REVERSING VALVE B W2 C X C O P T I O N A L B* ** Use “O” or “B” Terminals, Never Both NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC 6 Y Y1 G FAN G CUSTOMER INSTALLED Y1-W1 Jumper Wire SINGLE-STAGE HEAT PUMP SYSTEM WITH NO AUX OR EMERGENCY HEAT Factory RH-RC Jumper Wire Installed 4, 5 WIRES #7
Y1 F SYSTEM COMMON Y2 O O B W3 W2 W2 HEAT PUMP SYSTEM 24V TRANSFORMER REVERSING VALVE C B* X C AUX / EMERG.
HARDWARE SETUP OPTIONS: On the thermostat’s circuit board, there is a row of DIP switches, labeled #1 through #9. The position of these switches will change how the thermostat operates, and also how information is conveyed to you on the LCD display screen. If you make any changes to these options, the changes are not recognized unless you either: change the position of the HEAT/OFF/COOL mode switch, or press the “HW RST” (Hardware Reset) button on the circuit board.
SWITCH #3 (PERIODS): [OFF/DOWN = 4, default] The thermostat uses four temperature program periods in both heating and cooling (MORN, DAY, EVE, and NITE). Each period has a separate start time and a set temperature. [ON/UP = 2] The thermostat operates in the same manner as above, however there are only two temperature program periods for heating and cooling (DAY and NITE).
SWITCH #8 (BATTERY MONITOR): [OFF/DOWN = ON, default] This setting, regularly monitors the battery level, and shows “LOW BAT” on the screen if the batteries need to be replaced. Use this setting at all times when batteries are present in the thermostat. [ON/UP = OFF] This setting only applies if you are NOT physically using batteries in the thermostat, and are powering the thermostat entirely from the system (“C” wire terminal).
NOTE: The Fan Mode switch only works if your system provides a wire for the thermostat’s “G” wire terminal, to control a blower fan. The Fan Mode switch has no effect in systems that do not have a blower fan (such as a hot water radiator system). MULTI-FUNCTION, SET SLIDE SWITCH: This switch provides an easy way to quickly access the most commonly used thermostat settings.
OPERATING INSTRUCTIONS: SET DAY AND TIME: Place the Set Slide Switch into the DAY/TIME position. With the day flashing, press UP or DOWN to set the day of the week. Press NEXT and the clock time will start flashing. Use UP or DOWN to set the time, making sure the AM/PM indication is correct. Holding the UP or DOWN buttons will make the clock digits scroll rapidly. Return the Set Slide switch to the RUN position when finished.
pump has different operating characteristics, you should refer to your heat pump literature to determine when to disable the heat pump and run in Emergency Heat mode. LCD DISPLAY BACKLIGHT: The display screen is lighted to assist viewing at nighttime, or in locations with low light levels. A press of any button on the front panel will light the display for approximately 10 seconds.
TEMPERATURE PROGRAMS: By default, this thermostat has 4 separate program periods for both Heat and Cool mode, they are: MORN, DAY, EVE, and NITE. Each period ends at the start time of the following period. The heat programs are set in HEAT mode, and the cool programs are set in COOL mode. NOTE: If the thermostat is configured to use only 2 periods per day instead of 4 (HARDWARE SETUP OPTIONS), the thermostat will only use the DAY and NITE periods. The MORN and EVE periods will not be visible on the screen.
remaining days, one after the other (specific days may be skipped by pressing the UP button to advance past them when they are flashing in the “copy to” location). To exit the Copy feature, and return to the regular temperature program screen, press and hold the NEXT button for more than 2 seconds. Return the Set Slide Switch to the RUN position when you are finished.
for heat pump configurations). An Offset value from 1 to 9 degrees will determine the number of degrees from the set point that will be required for the second heating stage to turn on. This setting can be used to conserve energy in situations where the second heating stage is more costly to operate when compared to the first stage. 71 70 69 68 Cut-In / Cut-Out (1st Stage) 70˚F Set Temperature Swing Setting= #2 (+/- 0.
TEMPERATURE CALIBRATION: The internal temperature sensor in this thermostat is accurately calibrated at the factory, and in most cases alterations to this setting should not be needed. The Temperature Calibration feature allows you to manually offset the measured temperature by as much as plus or minus 5°F (3°C) degrees from its original value. This feature can be useful to match or synchronize this thermostat to another one or more, if multiple thermostats are used in the same home.
the screen, you can either wait for the screen to advance forward on its own, or press the NEXT button (behind the door) one time to jump ahead rapidly. Now use the UP/DOWN buttons to select your desired set temperature that will be used for the Setback duration. Just like the previous step, you can either wait for the screen to advance on its own, or press the NEXT button to advance and return to the Normal Run screen.
NOTE: When activating the Special Program feature, button presses need to be performed in a timely manner, as the thermostat will timeout and automatically exit the setting screen after approximately 10 seconds without a button press. TO ACTIVATE THE SPECIAL PROGRAM: Press and hold the HOLD button for at least 5 seconds. The words “S-PROG” and “DAYS LEFT” will appear on the screen, along with a two digits.
will add the word “SET” and display the current heat set temperature limit. Use the UP/DOWN buttons to adjust the maximum heat set temperature value. Press the NEXT button to accept the setting and return to the Normal Run screen in heat mode. TO SET THE COOL LIMIT STOP: Place the System Mode switch in the OFF position, and the Set Slide switch in the RUN position. Press and hold the DOWN button while sliding the System Mode switch from OFF to COOL.
TO LOCK THE KEYPAD: Start with the System Mode switch in either the HEAT or COOL positions, and the Set Slide switch in the RUN position. Press and hold the NEXT button for 5 seconds, and the words “LOCK CODE” then “SET CODE” will appear at the top of the screen. Select a 4-digit code that you would like to use for locking the thermostat. Press the UP/DOWN buttons to change each flashing digit, using the NEXT button to cycle through which digit is flashing.
of the display screen. Press either of the UP/DOWN buttons to select the desired filter duration (in days) from the following choices: OFF, 30, 60, 90, 120, 180, or 365. If the filter duration value is set to “OFF”, then the Air Filter Monitor will be completely disabled. TO RESET THE FILTER USAGE COUNTER: Move the Set Slide switch to the “FILT/ENRGY” position. The words “FILTER LEFT” will be shown at the top of the screen.
along with the word “COOL” and the amount of cooling system runtime (displayed as “HH:MM”, for hours and minutes). Use the UP/DOWN buttons to cycle between Today’s Usage, Yesterday’s Usage, and the Total Cumulative Usage. NOTE: For the Total Cumulative Usage, the timer will record up to a maximum of 99 hours and 59 minutes, then the display will change to “HHHH” for hours only, without the colon in the center. Return the Set Slide switch to the RUN position when you are finished.
COMPRESSOR PROTECTION BYPASS: This optional feature permits the installer or service technician to temporarily disable the built in compressor protection delays. This is most useful for diagnosing and testing the heating and cooling systems after installation is complete, and should not be used during normal operation. To activate this feature, press and hold both the NEXT and HOLD buttons, while also perform a single press of the Hardware Reset button (the LCD display screen will become fully populated).
troubleshooting guides, answers to the most common technical questions, and also permits you to email your questions to our technical support staff at your convenience. LIMITED WARRANTY: If this unit fails because of defects in materials or workmanship within three years of the date of original purchase, LUX will, at its option, repair or replace it. This warranty does not cover damage by accident, misuse, or failure to follow installation instructions.
˚F SET HEAT FAN SETBACK F̊ 5:36P HOLD Mt. Laurel, New Jersey 08054, USA http://www.luxproducts.