
CAUTION:
The TX9000TS can be used with most 24 volt gas, oil or electric heating and air conditioning systems, single stage heat pumps or gas millivolt heating systems. It cannot be used with 3 wire zone valves, 120V systems, or multistage systems.
Please read all instructions carefully before beginning installation.
WARNING:
#1 Phillips screwdriver (small)
Drill with 3/16-in. (4.8mm) bit
Wire stripper/cutter
On replacement installations, mount the new thermostat in place of the old one unless the conditions listed below suggest otherwise. On new installations, follow the guidelines listed below.
CAUTION:
1. Switch electricity to the furnace and air conditioner OFF; then proceed with the following steps.
2. Remove cover from old thermostat. Most are snap-on types and simply pull off. Some have locking screws on the side; these must be loosened.
3. Note the letters printed near the terminals. Attach labels (enclosed) to each wire for identification. Remove and label wires one at a time. Make sure the wires do not fall back inside the wall.
4. Loosen all screws on the old thermostat and remove it from the wall.
5. Strip insulation leaving 3/8 in. (9.5mm) bare wire ends and clean off any corrosion.
6. Fill wall opening with non-combustible insulation to prevent drafts from affecting the thermostat.
CAUTION: Be careful not to drop the body or disturb electronic parts. Leave the cover closed while the body is being removed from the base.
7. Press up on the thumb latch at the bottom of thermostat and separate the body from its base.

8. Hold the base against the wall. Route the wires through the hole below the terminal block. Position the base for best appearance (to hide any marks from an old thermostat). Attach the base to the wall with the two screws provided.
NOTE: If you are mounting the base to a soft material like plasterboard or if you are using the old mounting holes, the screws may not hold. Drill a 3/16-in. (4.8mm) hole at each screw location, and insert the plastic anchors provided. Then mount the base as described below.
9. Loosen wire clamp screws just enough to slide wire under the black top part of the clamp.

10. Using your label, and diagrams below determine appropriate wiring for you system.
11. If you are unsure or need assistance, call the LUX Technical Assistance Dept. (see technical assistance.)
12. Slide proper wire between the brass back and black top clamp.
13. Tighten each screw securely.
2 + 3 WIRE HEATING SYSTEMS

COOLING SYSTEMS

HEATING/COOLING SYSTEMS 5 + 6 Wire 2 Transformers

HEATING/COOLING SYSTEMS 4 + 5 Wire 1 Transformers

WIRING DIAGRAM NOTES (APPLIES TO ALL DRAWINGS)





14. Install two(2) Energizer or DURACELL "AA" size alkaline batteries at this time. For instructions, see "BATTERIES & MAINTENANCE".
15. Initially, your thermostat will display "SUN 12:00 AM". To correct the display, refer to "Setting the DAY and TIME" in the "OPERATING INSTRUCTIONS" section of this manual.
16. Install your TX9000TS on its base. To do this hang the top of the unit by the tabs on the base, then snap the bottom of the unit into place. Do not use unnecessary force. If the body does not snap into place easily, remove the body, re-hang it from the tabs and try again.
17. Turn the power back on to your heating and/or air conditioning system.
18. Verify that the system and its fan are operating properly. When set to a high temperature, the heating system should provide warm air after a short time. Likewise a cooling system should provide cool air after a short time. Usually sound from the furnace and air conditioning units can be heard while they are running. The rush of moving air should be heard within a short time after either has been started.
NOTE: If you have an electric heat system and the blower does not operate after installation, see figure in SETUP OPTIONS Section to find the electric/gas heat jumper on the back of the body. Move the jumper to the ELEC position.
19. Your installation is now complete.
The TX9000TS displays the current time and the room temperature. It also displays the day of the week and the current program period, MORN, DAY, EVE, or NITE. Temperature is indicated near the center of the display, and time is indicated on the left. Setting and program changes can be made with the thermostat body on the wall, or removed from its base plate.
The SYSTEM MODE SWITCH has three positions HEAT, OFF and COOL. Each sets the corresponding operating mode. In the winter, set the system switch to HEAT to control your heating system. In the summer, set the switch to COOL to control your air conditioner. In spring and fall or when the windows are open, you can set the switch to OFF. When thermostat is in the OFF position, neither HEAT or COOL programs will run.
The fan switch has two positions; AUTO will only run your system’s fan as required for heating and cooling. ON runs your system’s fan continuously.
While operating the TX9000TS there will often be two arrow keys visible (just to the right of the temperature) one pointing up and the other pointing down. They are used to adjust temperatures and change other settings.
Touch the displayed temperature once then touch the UP/DOWN arrow key; it adjusts the flashing set temperature by one degree in the associated direction. Holding the key will automatically advance the setting in the associated direction. For simple operation see HOLD.
If there are many choices for a value, usually that setting will automatically advance by holding one of the arrow keys. Some settings though, must be changed one touch at a time.
MENU: Touch this key to begin viewing available menus.
SCROLL: Use this key to see the available menu choices.
YES: Touch this key to enter a menu. When present on a menu, touching this key accepts any setting changes you have made.
NOTE: Neglecting to accept changes by touching this key when present, will leave the unit at its previous setting.
EXIT: Touch this key to return to the main operating screen.
Press the light bulb button at the lower right corner of the body to illuminate the display. It will remain illuminated for 15 seconds. Touching a field in the screen extends illumination time.
The TX9000TS will emit an audible beep to acknowledge that a field in the screen has been touched.
FLAME ICON
In HEAT mode a FLAME icon will be visible to the right of the current room temperature. While heating is active, the FLAME will flash.

SNOWFLAKE ICON
In COOL mode a SNOWFLAKE icon will be visible to the right of the current room temperature. While cooling is active, the SNOWFLAKE will flash.

LOW BATTERY ICON
When the Low Battery level has been reached, the battery icon will appear. It will disappear only when fresh batteries have been installed.

This button will unlock the touchscreen and read option switch positions before the unit resumes normal operation. Programs and other settings will be maintained.

This reset is disabled while the touchscreen is locked. When activated it will reset all programmable values and settings including the lock code and clock, to their default values. Then option switch positions will be read before resuming normal operation. Record your settings and programs before pressing this button.
NOTE:

SET DAY: Touch displayed DAY, advance with UP arrow.
Touch displayed DAY again to return to main screen.
SET TIME: Touch displayed time, set with UP or DOWN arrows. Touch displayed time again to return to main screen.
DAY and TIME may also be set from their menu as follows:
Temporary temperature override allows you to change the current Set Temperature in Heat or Cool until the next program period without changing your temperature control programs.
HOLD may be used for manual temperature control. It is the simplest means to set and maintain a fixed temperature in Heat or Cool, without concern for programming.
The TX9000TS provides four independent programming periods per day. Heat and Cool are programmed separately. You can use the default programs or alter them to suit your schedule.
To review the programs select Heat or Cool mode, touch MENU and then use SCROLL to see HEAT or COOL PROGRAM. Touch YES to enter HEAT or COOL PROGRAM. Use NEXT to step through each period and its set temperature. You can use the built-in programs as shown, or change them as you wish. Touch EXIT to return to the main display. Each day is divided into four periods. Each period has its own starting time and temperature.
The default programs are given in the following table:
| PERIOD | HEAT MODE | COOL MODE |
| MORN | 6:00 AM 700 F (210 C) | 6:00 AM 780 F (260 C) |
| DAY | 8:00 AM 620 F (170 C) | 8:00 AM 850 F (290 C) |
| EVE | 6:00 PM 700 F (210 C) | 6:00 PM 780 F (260 C) |
| NITE | 10:00 PM 620 F (170 C) | 10:00 PM 820 F (280 C) |
Pressing the S. RESET button restores these heating and cooling programs and all other default settings.
You can change any preset times and/or temperatures to suit your schedules for HEAT and COOL during each period of each day of the week. A blank programming chart is provided for you to record your temperature settings in that chart.

TIP: Pressing Day, Time or Temperature while programming will shift focus to that setting, allowing it to be edited in the order most convenient for you.
COPY will copy the previous days programs into the current day and advance the thermostat to the beginning of next day.
The FILTER MONITOR is used to help determine when your filter should be changed. It counts the hours of HEAT and COOL since it was last reset When the monitor limit is reached the CHANGE FILTER indicator will become visible. The default value of 720hrs is normally used for a 90 day filter. Other values are given in the following table.
| FILTER LIFE IN DAYS | SET COUNTER HOURS TO |
| 30 | 240 |
| 60 | 480 |
| 90 | 720 |
To Reset Filter Counter And/Or Change The Counter Limit
A thermostat works by turning your heating or cooling system on and off whenever the room temperature varies a certain number of degrees from the set-point temperature. This variation is the "swing." Your system should cycle on about 3 to 6 times per hour. A smaller swing number increases the number of cycles, so room temperature is more constant. A larger swing number decreases the number of cycles, saving energy in most cases. To change the SWING value from the main menu:
A timer in the unit records your system’s ON time for each mode of the current day, previous day, and cumulative total to let you see the effects of your temperature settings and weather conditions.
The Program Lock allows the owners/operators to prevent unauthorized changes to the thermostat’s settings. When the thermostat is locked, a three digit code is set (000 to 999). That code must be re-entered before locked settings can be changed without performing a hardware reset of the unit. The status of the lock is indicated by an open or closed padlock icon.
TO SET CODE
TO LOCK SETTINGS
TO UNLOCK SETTINGS
If you forget your code and the touch screen is locked, perform a Hardware Reset to unlock it. With the touch screen unlocked, you may perform a Software Reset to reset the code to "000". See "Hardware Reset" and "Software Reset".
There are Installation Option switches located inside the thermostat on the rear of its circuit board. They control the following:
The position of this switch controls whether the time is displayed in 12 hour or 24 hour Military Time format.
Smart Recovery allows your HVAC system to attempt to recover from a setback period and reach your desired comfort temperature set point by the beginning of your programmed comfort period. This option allows you to choose whether to use Smart Recovery.
When enabled, Smart Recovery will initiate if:
The position of this switch controls whether the temperature is displayed in degrees ˚F or ˚C.
The position of this switch controls minimum length of time the thermostat must remain with Heat or Cool either ON or OFF before it will automatically switch to the alternate ON or OFF state. This feature prevents short cycling and provides compressor protection for cooling units. Choices are 2 or 5 minutes.
Use this table to determine the positions which correspond to the operation you prefer.

This table is printed on the circuit board. To change a switch position move switch down or up. After settings have been changed with batteries installed, press the Hardware Reset (H.W. Reset) button on the rear of the unit's circuit board for changes to take effect.

In HEAT mode, the position of this jumper controls when the thermostat requests the system fan to run. In Gas mode the fan is normally controlled by the heating system itself. In Electric mode, the fan is controlled by the thermostat.

The TX9000TS requires batteries to operate your heating/cooling system. Replace the batteries when the battery REPLACE indicator appears in the display or at least once a year.
Reference file: Lux TX9000TS Touch Screen Seven-Day Programmable Thermostat
Series: TX9000TS SERIES