Lux Products TX500b Thermostat User Manual

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TX500b SERIES  
®
SMART TEMP ELECTRONIC THERMOSTAT  
MO  
UP  
MO  
UP  
MORN  
DA  
V  
GHT  
H
E
A
T
MORN  
DA  
EV  
NIGHT  
H
E
A
T
Y
Y
E
E
PM  
PM  
DOWN  
DOWN  
T  
EEKDA  
ROGRAM  
T  
UNDA  
OGRAM  
S
ET  
WEEKDA  
PROGRAM  
S
S
P
ET  
UNDA  
ROGRAM  
Y
Y
Y
Y
RESET  
RESET  
P
FAN  
HEAT  
FAN  
HEAT  
AUTO  
ON  
AUTO  
ON  
OFF  
OFF  
HOLD  
HOLD  
COOL  
COOL  
RUN  
S
DA  
ET  
Y
RUN  
/
NEXT  
/
TIME  
NEXT  
500  
500  
n t s P e n d i n  
P
a
t
e
n
t
s
P
e
n
d
i
n
g
P
a
t
e
g
S
IMPLIFIED INSTRUCTIONS  
TO SET PROGRAMS  
Rotate Dial to SET  
SIMPLIFIED INSTRUCTIONS  
TO SET TIME  
&
DAY  
TEMPORARY TEMPERATURE  
OVERRIDE  
TO SET TIME  
&
DAY  
TO SET PROGRAMS  
• Rotate Dial to SET  
TEMPORARY TEMPERATURE  
OVERRIDE  
Rotate Dial to set DAY/TIME.  
Rotate Dial to set DAY/TIME.  
Complete, Easy To Read Programming And Installation Instructions  
I M P O R T A N T !  
Thank you for your confidence in our product. To obtain the best  
results from your investment, please read this manual and acquaint  
yourself with your purchase before installing your new thermostat.  
READ THE  
TION  
ALLA  
INST  
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 instal-  
lation. Please save for future reference.  
INSTRUCTIONS  
.
FIRST  
The Set Temperature  
LUX  
Speed Dial®  
Fan Switch  
Liquid  
Crystal  
Display  
FEATURES  
The Active  
Program Period  
The TX500 can be used with most 24  
volt gas, oil or electric heating and air  
conditioning systems or gas millivolt  
heating systems. It cannot be used  
with 120 volt heating systems or heat  
pumps. Ask your dealer for other LUX  
thermostats to control those systems.  
System Switch  
MO  
UP  
MORN  
H
E
A
T
DAY  
EVE  
NIGHT  
PM  
DOWN  
SET  
SET  
WEEKDAY  
PROGRAM  
SUNDAY  
PROGRAM  
RESET  
HOLD  
FAN  
HEAT  
The TX500 is programmable. There  
are four programming periods per day.  
Each period can be programmed  
separately.  
AUTO  
OFF  
ON  
COOL  
SET  
DAY/TIME  
RUN  
NEXT  
500  
P a t e n t s P e n d i n g  
You can use the built-in time/  
temperature programs, or alter  
them to suit your schedule. The  
SIMPLIFIED INSTRUCTIONS  
TEMPORARY TEMPERATURE  
OVERRIDE  
•Press UP/DOWN to  
TO SET TIME  
&
DAY  
TO SET PROGRAMS  
• Rotate Dial to SET  
WEEKDAY,  
• Rotate Dial to set DAY/TIME.  
• Press UP to change  
current day.  
• Press NEXT.  
• Press UP/DOWN to set time.  
adjust set temperature.  
To clear OVERRIDE press  
UP/DOWN until original set  
temperature appears or wait  
for the start tf the next period.  
SATURDAY or  
SUNDAY PROGRAM.  
• Press UP/DOWN to  
adjust start time.  
TX500 provides separate programming  
for weekdays and weekends — for both  
heating and cooling. You can override the  
programmed temperatures for as little as one  
programming period or for an entire vacation.  
• Press NEXT.  
Rotate the  
dial to  
the RUN  
position  
to close  
the door.  
• Press UP/DOWN to  
adjust temperature.  
• Press NEXT.  
• Repeat as needed or  
rotate dial to RUN to  
stop Programming.  
TEMPERATURE HOLD  
• Press HOLD. Adjust temperature  
as desired with UP/DOWN.  
To clear, press HOLD again.  
Thermostat  
Body/Sub-base  
Thermostat Cover  
In cool weather, when the system switch is set to HEAT, the TX500 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 TX500 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.  
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.  
C
A
U
T
I
O
N
Your thermostat is a precision instrument. Please handle it with care.  
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.  
• 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.  
© COPYRIGHT 2006 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED  
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ATTACHING WIRES  
4. Hold the base against the wall, with the wires coming through  
TYPICAL COOLING AND  
HEATING SYSTEM  
(4-WIRE)  
TYPICAL COOLING AND  
HEATING SYSTEM  
(5-WIRE)  
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). Attach the base to the wall  
with the two screws provided.  
G
Y
W
RH RC  
G
Y
W
RH RC  
GAS  
VALVE  
FAN  
REMOVE  
GAS  
FAN  
J UMPER  
BETWEEN  
RH & RC  
VALVE  
COOL  
COMP  
C
A
U
T
I
O
N
COOL  
COMP  
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 5 electrical terminal screws.  
24 VAC HEAT  
TRANSFORMER  
24 VAC HEAT  
TRANSFORMER  
110  
24 VAC COOL  
TRANSFORMER  
110  
Figure 10  
110  
Figure 11  
WIRING DIAGRAMS  
INSTALLING BATTERIES/ MAINTENANCE  
The TX500 requires two new Energizer® or DURACELL® "AA" s ize  
alkaline batteries to operate your furnace and retain its programming in  
memory. Replace the batteries when the LO BATT indicator appears in the  
dis play or at leas t once a year.  
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.  
REPLACE BATTERIES  
WHEN INDICATOR  
APPEARS  
DAY  
1. Remove fresh batteries from their carton.  
EVE  
2. Remove body of thermostat as described  
at bottom of first column.  
NIGHT  
T
LO BAT  
3. Remove the used batteries.  
4. Install two new Energizer® or DURACELL® "AA"  
size alkaline batteries in the battery compartment.  
Heat Selector  
Observe the polarity marking shown in the compartment.  
Place body back on wall.  
GAS  
ELECT  
5. Place the body back on the wall. Hook the top of the  
body onto the base, swing the body down and snap the  
body onto the base.  
WARNING: Use Energizer® or DURACELL®  
Alkaline Batteries Only.  
Battery Compartment  
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  
When replacing batteries, you  
have approximately 1 minute  
before programs are lost.  
TECHNICAL ASSISTANCE  
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 through Friday. You  
can also receive technical assistance online anytime day or night at  
technical questions, and also permits you to email your questions to our technical  
support staff at your convenience.  
These diagrams are provided for new installations or unreferenced wires.  
WARRANTY  
TYPICAL HOOKUP FOR 2-WIRE  
24V HEATING SYSTEM AND  
MILLIVOLT SYSTEM  
TYPICAL HOOKUP FOR 3-WIRE  
HEAT SYSTEM IF THIRD  
WIRE IS FAN WIRE  
Limited Warranty: If this unit fails because of defects in materials or workmanship  
within three years of date of original purchase, LUX Products Corporation will, at its  
option, repair or replace it. This warranty does not cover damage by accident, 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 participating 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 consequential 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.  
G
Y
W
RH RC  
G
Y
W
RH RC  
GAS  
VALVE  
GAS  
VALVE  
FAN  
24 VAC  
TRANSFORMER  
OR  
24 VAC  
TRANSFORMER  
THERMOPILE  
110  
110  
Figure 9  
Figure 8  
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TEMPERATURE OVERRIDE AND TEMPERATURE HOLD  
OPERATION  
These features let you change the current Set Temperature without changing the programs  
stored in your thermostats memory.  
This thermostat is “armchair programmable.” You can make any program or  
setting changes with the thermostat body off or on the wall thermostat base.  
TEMPORARY TEMPERATURE OVERRIDE  
The TX500 alternately displays the current time and the room temperature. It also displays  
the day of the week and the currently active control program that is controlling the temperature:  
MORN, DAY, EVE, or NIGHT.  
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.  
Setting the FAN switch to AUTO automatically runs your systems fan during heating and  
cooling. Setting the FAN switch to ON runs your systems fan continuously even without  
heating or cooling.  
Press UP/DOWN to change the current temperature  
setting. The OVERRIDE indicator appears on display.  
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 temperature  
appears. OVERRIDE indicator will disappear  
from display.  
M
O
MORN  
DAY  
H
E
A
T
EVE  
PM  
NIGHT  
E
OVERRID  
VACATION TEMPERATURE HOLD  
N
O
T
E
The FAN switch works only if your system provides a wire for the TX500s G” terminal.  
Press HOLD. Adjust temperature as  
desired with UP/DOWN.  
Temperature setting will not change even  
after next program period begins.  
M
O
MORN  
DAY  
H
E
A
T
THE BUILT-IN ENERGY STAR® PROGRAMS  
EVE  
PM  
NIGHT  
HOLD  
To clear, press HOLD again.  
PERIOD  
HEAT  
COOL  
Push in the RESET key. This  
sets the built-in heating and cooling  
programs. To review the built-in  
programs, rotate the dial to SET  
WEEKDAY PROGRAM or SET  
WEEKEND PROGRAM.  
WEEKDAYS  
preprograms  
MORN  
DAY  
EVE  
6:00 AM 7 6:00 AM 78°  
8:00 AM 6 8:00 AM 85°  
6:00 PM 70° 6:00 PM 78°  
ADVANCED FEATURES  
NIGHT 10:00 PM 62° 10:00 PM 82°  
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  
TEMPERATURE SWING  
MORN  
DAY  
EVE  
6:00 AM 7 6:00 AM 78°  
8:00 AM 6 8:00 AM 85°  
6:00 PM 70° 6:00 PM 78°  
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.”  
SAT & SUN  
preprograms  
NIGHT 10:00 PM 62° 10:00 PM 82°  
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.  
and temperature.  
The dial must be in the RUN position to close the door.  
Press together  
SWING SETTINGS  
PROGRAMMING THE TX500  
To change  
swing  
Dial must be in  
the run position  
You can change any of the preset times and/or temperatures to suit your schedules for the  
weekday and weekend programs. Each day is divided into four periods: Morning, Day,  
Evening, and Night. Each period is programmed for HEAT and for COOL.  
A blank programming chart is provided below for you to record your temperature settings in  
that chart.  
MORN  
DAY  
EVE  
NIGHT  
Press to set.  
M
O
T
U
W
E
T
H
FR  
Select HEAT to program the TX500 for  
controlling your heater.  
MORN  
DAY  
H
E
A
T
5 MIN/ 2 MIN MINIMUM ON/OFF TIME  
HEAT  
OFF  
EVE  
Your thermostat has an internal timer built in to protect your compressor. The timer forces a minimum on/off  
time of 5 minutes. You may change this minimum on/off time to 2 minutes. To accomplish this, place the  
jumper labeled JP3 over both pins. You must press the small reset button on the face of the thermostat for  
the changes to take effect.  
NIGHT  
AM  
OR Select COOL to program the TX500 for  
controlling your air conditioner.  
COOL  
Rotate dial to SET WEEKDAY PROGRAM. To program the WEEKEND, rotate the dial to SET  
WEEKEND PROGRAM. With dial on SET WEEKDAY PROGRAM, you will see this display.  
CHANGING FROM °F TO °C AND A 12HR CLOCK TO A 24HR CLOCK  
WARNING: Making these changes will require you to  
reset  
the thermostat. Copy any of your customized  
programs onto the chart below. This will be your  
reference to reenter the programs afterwards.  
Located at the top center of the thermostat are  
two jumpers - C/F and 12/24.  
To change to Celsius - remove jumper - C/F.  
To change to a 24HR clock - remove jumper- 24/12H.  
Press the reset key on the front of the thermostat for  
changes to take effect.  
RC RH  
W
Y
G
CLOSE OPEN  
JP3 5MIN 2MIN  
To change the start time  
for MORN.  
To change the start time  
for EVE.  
JP2  
F
C
ELEC  
GAS  
JP1 12HR 24HR  
To program temperature.  
To program temperature.  
JP3  
JP2  
JP1  
To change the temp.  
setting for MORN.  
To change the temp.  
setting for EVE.  
To move to DAY.  
To move to NIGHT.  
To change the start time  
for NIGHT.  
To change start time  
for DAY.  
To program temperature.  
To program temperature.  
Reprogram as necessary.  
To change the temp.  
setting for NIGHT.  
To change the temp.  
setting for DAY.  
Rotate dial to RUN position to  
start the programs.  
To move to EVE.  
P R O G R A M M I N G  
C H A R T  
SETTING THE TIME AND DAY  
DAY  
PERIOD  
HEAT  
COOL  
TIME  
TEMP.  
TIME  
TEMP.  
SU  
DAY  
C
A
U
T
I
O
N
MON.  
THRU  
FRI.  
MORN  
DAY  
TEMP  
The TX500 is protected against normal static electric discharges.  
However, in extremely dry weather you should touch another metal  
object before the TX500 to avoid potential loss of programs.  
PM  
EVE  
NIGHT  
MORN  
DAY  
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 flag pointing to 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.  
SAT.  
and  
EVE  
SUN.  
NIGHT  
To change  
current day.  
To set current time. The  
time (e.g."12:00 AM")  
will be flashing.  
To change the  
current time.  

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