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THE BUILT IN ENERGY STAR PROGRAMS  
INSTALLATION AND OPERATING INSTRUCTIONS  
C
A
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T
I
O
N
Push in the RESET key. This sets the  
built-in heating and cooling programs.  
Do not allow wires to touch each other or parts on thermostat. Wires must be  
trapped between black spacer and brass terminal. Also, be sure to tighten securely  
all 7 electrical terminal screws.  
PERIOD  
HEAT  
COOL  
To review the built-in programs,press  
MON-SUN  
MORN  
DAY  
EVE  
6:00 AM 70° 6:00 AM 78°  
8:00 AM 62° 8:00 AM 85°  
6:00 PM 70° 6:00 PM 78°  
NEXT or PREVIOUS repeatedly; when  
TX9000a SERIES  
preprograms  
you are done, press RETURN.  
®
WIRING DIAGRAMS  
RC-RH JUMPER  
PROVIDED  
You can use the built-in programs as  
shown, or change them as you wish.  
Each day is divided into four periods.  
Each period has its own starting time  
and temperature.  
HEATING ONLY SYSTEMS  
COOLING ONLY SYSTEMS  
SMART TEMP ELECTRONIC THERMOSTAT  
RC-RH JUMPER  
PROVIDED  
NIGHT 10:00 PM 62° 10:00 PM 82°  
UP  
A
HEAT  
DOWN  
UP  
MO  
UP  
MO  
DAY  
DAY  
AT  
HEAT  
PM  
DOWN  
P
DOWN  
Y
O
G
W
B
RH RC  
Y
O
G
W
B
RH RC  
Easy as  
1–2–3  
SET  
SATURDA  
PROGRAM  
SET  
SUNDA  
SET  
SATURDA  
PROGRAM  
T  
A  
Y
Y
Y
Y
REST  
RESET  
PROGRAM  
FAN  
RAM  
FAN  
HEA  
T
HEAT  
AUTO  
AUTO  
SET  
WEEKDA  
ET  
EEKDA  
OFF  
FILTER  
HOLD  
Y
FILTER  
HOLD  
ON  
Y
ON  
COOL  
PROGRAM  
SET  
DAY/TIME  
RUN  
RUN  
NEXT  
NEXT  
1500  
a t e n t s P e n d i n g  
1500  
a t e n t s P e n d i n g  
P
P
SIMPLIFIED INSTRUCTIONS  
Press UP/DOWN to set time.  
SIMPLIFIED INSTRUCTIONS  
TEMPORARY TEMPERATURE OVERRIDE  
•Press UP/DOWN to adjust set temperature.  
TO SET TIME  
&
DAY  
Press UP/DOWN to set time.  
TEMPORARY TEMPERATURE OVERRIDE  
•Press UP/DOWN to adjust set temperature.  
TO SET TIME  
&
DA  
Rotate Dial to SET  
Y
Rotate Dial to SET  
DAY/TIME.  
Press UP to change  
TO SET PROGRAMS  
Rotate Dial to SET  
T
o
clear OVERRIDE press UP/DOWN until  
appears or wait for  
PROGRAMMING THE UNIT  
TO SET PROGRAMS  
Rotate Dial to SET  
T
o
clear OVERRIDE press UP/DOWN until  
appears or wait for  
DAY/TIME.  
Press UP to change  
original set temperature  
original set temperatur  
e
Installs Easily  
Set Day & Time  
Choose Heat or Cool  
You can change any preset times and/or temperatures to suit your schedules for the weekday,  
Saturday and Sunday programs. Each period (Morning, Day, Evening, and Night) is programmed for  
HEAT and for COOL.  
G
F
W
H
4
RH  
RC  
R
Y
C*  
6
G
F
RH  
RC  
R
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5
LUX PRODUCTS CORPORATION • Mt. Laurel, New Jersey 08054 USA  
WARNING: Use Energizer® or DURACELL® Alkaline Batteries Only  
Energizer® is a registered trademark of Eveready Battery Company, Inc.  
DURACELL® is a registered trademark of The Gillette Company, Inc.  
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Select HEAT to program the  
unit for controlling your heater.  
Select COOL to program the  
unit for controlling your air conditioner.  
OR  
52002  
Complete, Easy To Read Programming And Installation Instructions Inside  
PROGRAM MO TU WE TH FR  
FOR: MORN  
SET TEMP  
Rotate dial to SET WEEKDAY PROGRAM. To program SATURDAY or  
SUNDAY, rotate the dial to SET SATURDAY or SET WEEKEND PRO-  
GRAM. With dial on SET WEEKDAY PROGRAM, you will see this display.  
HEATING / COOLING SYSTEMS  
HEATING / COOLING SYSTEMS  
START AT:  
AM  
TEMP  
4 -WIRES WITH ONE TRANSFORMER  
5 -WIRES WITH TWO TRANSFORMERS  
HEAT  
RC-RH JUMPER  
PROVIDED  
RC-RH JUMPER  
REMOVED  
I M P O R T A N T !  
Y
O
G
W
B
RH RC  
Y
O
G
W
B
RH RC  
To change the start  
time for MORN.  
To change the start  
time for EVE.  
DOWN  
DOWN  
UP  
UP  
Thank you for your confidence in our product. To obtain the best results from  
your investment, please read these instructions and acquaint yourself with  
your purchase before installing your new thermostat. Then follow the  
installation procedures, one step at a time. This will save you time and  
minimize the chance of damaging the thermostat and the systems it controls.  
These instructions may contain information beyond that required for your  
particular installation. Please save for future reference.  
READ  
INSTALLATION  
INSTRUCTIONS  
FIRST  
NEXT  
UP  
NEXT  
UP  
To program temperature.  
To program temperature.  
To change the temp.  
setting for MORN.  
To move to DAY.  
To change start time  
for DAY.  
To change the temp.  
DOWN  
DOWN  
Y
C*  
6
G
F
W
H
4
RH  
RC  
R
Y
C*  
6
G
F
W
H
4
RH RC  
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setting for EVE.  
To move to NIGHT.  
To change the start  
time for NIGHT.  
To program temperature.  
To change the temp.  
setting for NIGHT.  
R
NEXT  
UP  
NEXT  
UP  
DOWN  
DOWN  
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5
NEXT  
UP  
NEXT  
UP  
To program temperature.  
FEATURES  
DOWN  
DOWN  
To change the temp.  
setting for DAY.  
To move to EVE.  
TYPICAL SINGLE STAGE  
The Active Program Period  
The Unit can be  
used with most  
24 volt gas, oil or  
electric heating  
and air conditioning  
The Set  
HEAT PUMP WIRING  
WIRING DIAGRAM NOTES  
(APPLIES TO ALL DRAWINGS)  
Liquid Crystal  
Display  
*CUSTOMER  
SUPPLIED  
JUMPER  
NEXT  
LUX Speed  
Temperature  
RC-RH JUMPER  
PROVIDED  
The COPY button can be used to duplicate the  
programs from any previous day.  
Dial®  
• The DASHED lines are optional depending upon  
your system type.  
Y
O
G
W
B
RH RC  
Rotate dial to RUN position to start the programs or SET WEEKEND PROGRAM to continue  
programming.  
systems, single-stage  
heat pumps or gas  
• Verify whether “C”, “X” or “B” wires are connected  
to system common.  
Thermostat  
Body  
millivolt heating systems.  
It cannot be used with 120  
volt heating systems or  
multistage heat pumps. Ask  
your dealer for other LUX  
thermostats to control  
those systems.  
C
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• If “B” and “O” are both present, it is likely that “B”  
is a system common.  
The unit is protected against normal static electric discharges. However, in extremely dry weather you  
should touch another metal object before the unit to avoid potential loss of programs.  
Y
C*  
G
F
RH  
RC  
R
O
B
• If a “B” wire in your system is a common, then  
connecting it to the “B” terminal may cause damage to  
your system.  
System  
Switch  
SETTING THE TIME OF DAY  
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Open the drop down door on the front of the thermostat. Rotate the dial to the SET DAY/TIME  
position. You should see the display pictured above with a day of the week flashing. When you are  
finished setting the day and time, rotate the dial to RUN to return to normal operation or to another  
position to continue programming.  
Fan  
• If “Y” and “C” are both present, it is likely that “C”  
is a system common.  
Switch  
The Unit is programmable.  
There are four programming  
periods per day. Each  
period can be programmed  
separately.  
You can use the built-in  
time/temperature  
programs, or alter them  
to suit your schedule. The  
Unit provides separate  
programming for every day  
of the week- for both heating and cooling. You can override the programmed temperatures for as  
little as one programming period or for an entire vacation.  
USE B or O NOT BOTH  
PATENT NO. 5,673,850  
These diagrams below are provided for new installations or unreferenced wires.  
SIMPLIFIED INSTRUCTIONS  
Easy to  
UP  
TEMPORARY TEMPERATURE OVERRIDE  
•Press UP/DOWN to adjust set temperature.  
To clear OVERRIDE press UP/DOWN until  
original set temperature appears or wait for  
the start tf the next period.  
TO SET TIME  
• Rotate Dial to SET  
DAY/TIME.  
• Press UP to change  
current day.  
• Press NEXT.  
&
DAY  
TO SET PROGRAMS  
• Rotate Dial to SET  
WEEKDAY,  
To change  
current day.  
To set current time. The (e.g.  
“12:00”) will be flashing.  
To change the  
current time.  
UP  
NEXT  
follow  
SATURDAY or  
SUNDAY PROGRAM.  
• Press UP/DOWN to adjust  
start time.  
Instructions  
DOWN  
TEMPERATURE HOLD  
• Press UP/DOWN  
to set time.  
TYPICAL HOOKUP FOR 2 OR 3 WIRE  
24 VAC HEATING SYSTEMS (AND MILLIVOLT)  
• Press HOLD. Adjust temperature as  
desired with UP/DOWN.  
To clear, press HOLD again.  
• Press NEXT.  
• Press UP/DOWN to adjust  
temperature.  
• Press NEXT.  
• Repeat as needed or rotate  
dial to RUN to stop Programming.  
TEMPERATURE OVERRIDE AND TEMPERATURE HOLD  
These features let you change the current Set Temperature without changing the programs stored in  
your thermostat’s memory.  
Thermostat  
Cover  
Y
O
G
W
B
RH RC  
Button to Light Display  
TEMPORARY TEMPERATURE OVERRIDE  
COMMON  
Press UP/DOWN to change the current temperature setting. The OVERRIDE indicator  
OPTIONAL  
FAN LEAD  
RH-RC JUMPER  
PROVIDED  
UP  
appears on display.  
Gas  
System  
XFMR  
Valve  
or  
The Override feature will be automatically canceled at the start of the next program period.  
To cancel OVERRIDE prior to next program period press UP/DOWN until original set tem-  
perature appears. OVERRIDE indicator will disappear from display.  
FAN  
In cool weather, when the system switch is set to HEAT, the Unit will maintain cooler “set back”  
room temperatures to save energy. It will then change to warmer “comfort” settings — all  
automatically, at specified times during the day.  
In warm weather, when the system switch is set to COOL, the Unit will maintain warmer “set  
back” room temperatures to save energy. It will then change to cooler “comfort” settings - all  
automatically, at specified times during the day.  
A large liquid crystal display shows time, day of the week, and room and set temperatures.  
It will remind you when the filter should be changed in your blower and track your system’s energy  
usage.  
DOWN  
Heater  
TYPICAL COOL HOOKUP  
24 VAC SYSTEMS  
VACATION TEMPERATURE HOLD  
Press HOLD. Adjust temperature as desired with UP/DOWN.  
Temperature setting will not change even after next program period begins.  
To clear, press HOLD again.  
HOLD  
Y
O
G
W
B
RH RC  
RH-RC JUMPER  
PROVIDED  
Temperature swing adjustment lets you fine-tune your system for maximum comfort and  
economy.  
SYSTEM  
ADVANCED FEATURES  
A timer in the unit records your systems’s ON time for the current day, the previous day, and  
cumulatively to let you see the effects of your temperature settings and weather conditions.  
COMMON  
A/C  
Comp.  
System  
XFMR  
5/2 Minute Selectable Minimum Run/Off Time for Short Cycle/Compressor Protection.  
Two Energizer® or DURACELL® “AA” alkaline batteries (not included) are used to retain your  
time and temperature programs.  
ENERGY USAGE MONITOR  
FAN  
TYPICAL 24 VAC 4-WIRE HOOKUP  
SINGLE STAGE HEAT AND COOL  
• Select HEAT to monitor heating energy usage or COOL to monitor cooling usage.  
• Rotate the dial to SET ENERGY/USAGE  
C
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Y
O
G
W
B
RH RC  
Your thermostat is a precision instrument. Please handle it with care.  
The current day’s ENERGY usage is displayed.  
Turn off electricity to the appliance before installing or servicing thermostat or any  
part of the system. Do not turn electricity back on until work is completed.  
• Do not short (jumper) across electric terminals at control on furnace or air conditioner  
to test the system. This will damage the thermostat and void your warranty.  
• All wiring must conform to local codes and ordinances.  
UP  
To reset the display to zero.  
NEXT  
To display yesterday’s energy use.  
COMMON  
RH-RC JUMPER  
PROVIDED  
To display total ENERGY usage since  
the Monitor was last set to zero.  
UP  
NEXT  
To undo the previous reset to zero.  
Gas  
A/C  
Comp.  
System  
XFMR  
Valve  
or  
FAN  
Rotate the dial back to the RUN position.  
Heater  
• This thermostat is designed for use with 24 volt and millivolt systems. The thermostat  
should be limited to a maximum of 1.0 amps; higher amperage may cause damage  
to the thermostat. If you are in doubt, call your utility company.  
FILTER USAGE MONITOR  
The FILTER Monitor counts the hours since the filter in your blower was last changed. After 250  
hours of use, FILTER will appear in the display. After you change the filter, set the thermostat’s FILTER  
Monitor back to zero as follows.  
TYPICAL 2-TRANSFORMER 24-VAC 5-WIRE HOOKUP  
SINGLE STAGE HEAT AND COOL  
Y
O
G
W
B
RH RC  
Rotate the dial to FILTER  
DOWN  
UP  
To reset the counter  
C A U T I O N  
INSTALLATION  
To change the FILTER Usage Monitor limit  
To avoid electrical shock and  
to prevent damage to the  
RH-RC JUMPER  
Please read all instructions carefully  
before beginning installation.  
REMOVED  
DOWN  
UP  
COMMON 2  
COMMON 1  
NEXT  
Hold for two seconds  
To change the limit from 0-500 hours  
F
OF  
furnace, air conditioner, and  
thermostat, disconnect the power  
supply before beginning work. This  
can be done at the fuse box, at the  
circuit breaker, or at the appliance.  
TOOLS REQUIRED  
To disable the FILTER Usage Monitor set the limit to 0 hours  
TEMPERATURE SWING  
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, to save energy in most cases.  
#1 Phillips screwdriver (small)  
Drill with 3/16-in. (4.8mm) bit  
THERMOSTAT LOCATION  
On replacement installations, mount the  
Gas  
A/C  
Comp.  
Heat  
XFMR  
Cool  
XFMR  
Valve  
or  
FAN  
Heater  
TYPICAL SINGLE-STAGE HEAT PUMP HOOKUP  
new thermostat in place of the old one unless the conditions listed below suggest otherwise. On new  
installations, follow the guidelines listed below.  
1. Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the floor, and in a room that is  
used often.  
2. Do not install it where there are unusual heating conditions, such as: in direct  
sunlight; near a lamp, radio, television, radiator, register, or fireplace; near hot water pipes in a wall;  
near a stove on the other side of a wall.  
3. Do not locate in unusual cooling conditions, such as: on a wall separating an unheated room; or in  
a draft from a stairwell, door, or window.  
Y
O
G
W
B
RH RC  
SWING SETTINGS  
Rotate the dial to SET ENERGY/USAGE  
Press together  
USE  
HOLD  
NEXT  
NEXT  
Press to set.  
B or O  
RH-RC JUMPER  
PROVIDED  
NOT BOTH  
DOWN  
UP  
To change the temp. swing between 1-9 (4=approx. F)  
SYSTEM  
COMMON  
Heat Pump Reversing  
Compressor Valve  
System  
XFMR  
FAN  
Press together  
4. Do not locate in a damp area. This can lead to corrosion that will shorten thermostat life.  
5. Do not locate where air circulation is poor, such as: in a corner or an alcove; or behind an open  
door.  
TEMPERATURE CALIBRATION  
Rotate the dial to SET DAY/TIME  
HOLD  
UP  
NEXT  
DOWN  
To adjust the thermostat  
6. Do not install the unit until all construction work and painting has been completed.  
7. This thermostat does not require leveling.  
N O T E  
If you have an electric system and the blower does not operate after installation, find the  
electric/gas heat selector on the back of the body. Move the selector to the ELEC position.  
PROGRAM LOCK  
To prevent tampering with set programs. The sequence of keys to lock and unlock the program:  
REMOVING THE OLD THERMOSTAT  
NEXT  
NEXT  
HOLD  
NEXT  
C A U T I O N  
INSTALLING BATTERIES  
Switch electricity to the furnace and air conditioner OFF; then  
Read instructions carefully  
The Unit requires batteries to operate your furnace and retain its  
proceed with the following steps.  
N
O
T
E
before removing any  
programming in memory. Replace the batteries when the  
REPLACE indicator appears in the display or at least once a year.  
1. Remove cover from old thermostat. Most are snap-on types and  
You must press “RESET” after enabling the features below. This will require you to  
reprogram your thermostat. Please copy your programs into the blank chart provided  
to assist reprogramming. Please reference the figure under “INSTALLING BATTERIES”  
which shows the JUMPER LOCATIONS  
REPLACE BATTERIES WHEN  
INDICATOR APPEARS  
wiring from existing  
simply pull off. Some have locking screws on the side. These  
thermostat. Wires must be  
must be loosened.  
labeled before they are  
WARNING: Use Energizer® or DURACELL® Alkaline Batteries Only.  
2. Note the letters printed near the terminals. Attach labels  
removed. When removing  
(enclosed) to each wire for identification. Remove and label wires  
CHANGING FROM °F TO °C AND A 12HR CLOCK TO A 24HR CLOCK  
wires from their terminals,  
ignore the color of the  
one at a time. Make sure the wires do not fall back inside the  
wall.  
N O T E  
WARNING: Making these changes will require you to reset the thermostat. Copy any of your cus-  
tomized programs onto the chart . This will be your reference to reenter the programs afterwards.  
• 5/2 Minute Selectable Minimum Run/Off Time -J1.  
J1 2 MIN  
J2  
J3 24 HR  
5 MIN  
F
12 HR  
wires since these may not  
comply with the standard.  
When replacing batteries, you have  
3. Loosen all screws on the old thermostat and remove it from the  
wall.  
MOUNTING THE UNIT ON THE WALL  
1. Strip insulation 3/8 in. (9.5mm) from wire ends and clean off any corrosion.  
2. Fill wall opening with non-combustible insulation to prevent  
drafts from affecting the thermostat.  
C
approximately 1 minute before programs are lost.  
J4 S/R ON S/R OFF  
To change to Celsius - remove jumper -J2.  
To change to a 24HR clock - remove jumper- J3.  
1. Remove fresh batteries from their carton.  
2. Remove body of thermostat as described at bottom of  
first column.  
J4 J3 J2 J1  
• Press the reset key on the front of the thermostat for changes to take effect.  
• Reprogram as necessary.  
3. Remove the battery clip and batteries.  
SMART RECOVERY  
3. Press up on the button on bottom of thermostat and swing the  
body away from the base and up to remove the body from the base.  
4. Install two new Energizer® or DURACELL® "AA"  
size alkaline batteries in the battery compartment.  
Observe the polarity marking shown in the clip.  
C
A
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T
I
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Your thermostat has the capability to turn the HEAT and AIR CONDITIONING ON in your home so that it  
reaches your desired comfort temperature at the time you have programmed. For instance, if you have pro-  
grammed your thermostat for 70° at 5:00pm, normally the thermostat will begin to heat your home at 5:00pm.  
With SMART RECOVERY on, the thermostat will calculate the best time to turn the heat on so that the temper-  
ature in your home reaches 70° by 5:00pm. It calculates the amount of time through experience and will get  
more accurate as time goes by. To enable SMART RECOVERY, remove J4 on the back of the thermostat. Press  
the small reset button on the front of the thermostat. IN RECOVERY will appear in the display when this feature  
is bringing your home to temperature.  
The Unit is protected against normal static  
electric discharges. However, in extremely  
dry weather you should touch another  
metal object before the Unit to avoid  
potential loss of programs.  
C
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5. Place body back on the wall. Hook the  
bottom of the body onto the base, swing the body up,  
and snap the body onto the base.  
Be careful not to drop the body or disturb electronic parts.  
Leave the cover closed while the body is being removed from the base.  
Installation is now complete. Be sure to turn the power  
back on to your heating and /or air conditioning system. If this is the first time you are installing batteries,  
the thermostat will display “SUN 12:00 AM”. Within 90 seconds the thermostat will begin to display the  
room temperature alternately with the time. To correct the display, see “Setting the TIME and DAY,” after  
you set the programs.  
N O T E  
Y
O
G
W
B
RHRC  
L
TECHNICAL SERVICE  
W3  
If you are mounting the base to  
a soft material like plasterboard  
or if you are using the old  
TERMINALS  
If you have any problems installing or using this thermostat, please carefully and thoroughly review the  
instruction manual. If you require assistance, please contact our Technical Assistance Department at 856-  
234-8803 during regular business hours between 8:00AM and 4:30PM Eastern Standard Time, Monday  
ucts.com. Our web site offers you answers to the most common technical questions, and also permits you to  
email your questions to our technical support staff at your convenience.  
Y
O
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.  
This thermostat is “armchair programmable”  
OPERATION  
You can make any program or setting  
The Unit alternately displays the current time  
and the room temperature. It also displays the  
day of the week and the currently active pro-  
changes with the thermostat body off or on  
the wall thermostat base.  
WARRANTY  
Limited Warranty: If this unit fails because of defects in materials or workmanship within three years of date  
of original purchase, LUX will, at its option, repair or replace it. This warranty does not cover damage by acci-  
dent, misuse, or failure to follow installation instructions. Implied warranties are limited in duration to three  
years from date of original purchase. Some states do not allow limitations on how long an implied warranty  
lasts, so the above limitation may not apply to you. Please return malfunctioning or defective units to the par-  
ticipating retailer from which purchase was made, along with proof of purchase. Please refer to "TECHNICAL  
ASSISTANCE" before returning thermostat. Purchaser assumes all risks and liability for incidental and conse-  
quential damage resulting from installation and use of this unit. Some states do not allow the exclusion of  
incidental or consequential damages, so the above exclusion may not apply to you. This warranty gives you  
specific legal rights and you may also have other rights which vary from state to state. Applicable in the  
U.S.A. only.  
BASE  
SCREW  
gram period that is controlling the temperature: MORN, DAY, EVE, or NIght.  
ANCHORS  
The set point temperature will appear in the right side of the display. 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 windows are open, you can set the system switch OFF.  
Attaching Wires  
4. Hold the base against the wall, with the wires coming through wherever it  
is convenient for wiring. Route the wires to below the terminal block.  
Position the base for best appearance (to hide any marks from an old  
thermostat). An optional wall plate is included for covering old mounting  
holes. Attach the base to the wall with the two screws provided.  
Setting the FAN switch to AUTO automatically  
N
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E
runs your system’s fan during heating and cooling.  
Setting the FAN switch to ON runs your system’s  
fan continuously even without heating or cooling.  
The FAN switch works only if your system  
provides a wire for the Unit’s “G” terminal.  
© COPYRIGHT 2006 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED