LUX PRODUCTS CORPORATION • Mt. Laurel, New Jersey 08054, USA
FEATURES
• The TX1500 can
be used with
most 24 volt
gas, oil or elec-
tric heating and
air conditioning
systems, single-
stage heat pumps or
gas millivolt heating
systems. It cannot be
used with 120 volt heat-
ing systems or multi-
stage heat pumps. Ask
your dealer for other
LUX thermostats to
control those systems.
• The TX1500 is
programmable. There
are four programming
periods per day. Each
period can be pro-
grammed separately.
• Easy to use
program dial.
• You can use the built-in
time/temperature programs, or alter them to suit your schedule. The TX1500
provides separate programming for weekdays, Saturday, and Sunday — for both
heating and cooling. You can override the programmed temperatures for as little as
one programming period or for an entire vacation.
• In cool weather, when the system switch is set to HEAT, the TX1500 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 TX1500 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.
• Temperature swing adjustment lets you fine-tune your system for maximum
comfort and economy.
• A 4-minute minimum off time in COOL prevents your air conditioning system
from being damaged.
• Two “AA” batteries (not included) are used to retain your time and temperature pro-
gram and to light the display.
43221
Rev B
IMPORTANT!
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
CAUTION
• 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 condition-
er 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 thermo-
stat 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.
TX1500 SERIES
SMART TEMP
ELECTRONIC THERMOSTAT
Complete, Easy To Read
Programming And Installation
Instructions Inside
Instrucciones Completas y Fáciles
de Leer Para Su Programación
E Instalación Incluídas Dentro
HEAT
OFF
COOL
AUTO
ON
FAN
RESET
HOLD
NEXT
RUN
FILTER
SET
SUNDAY
PROGRAM
SET
SATURDAY
PROGRAM
SET
WEEKDAY
PROGRAM
SET
DAY/TIME
DOWN
UP
1500
Patents Pending
MO
DAY
HEAT
PM
SIMPLIFIED INSTRUCTIONS
• Press UP/DOWN to set time.
TO SET PROGRAMS
• Rotate Dial to SET
WEEKDAY,
SATURDAY or
SUNDAY PROGRAM.
• Press UP/DOWN to adjust
start time.
• Press NEXT.
• Press UP/DOWN to adjust
temperature.
• Press NEXT.
• Repeat as needed or rotate
dial to RUN to stop Programming.
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.
TEMPERATURE HOLD
• Press HOLD. Adjust temperature as
desired with UP/DOWN.
•To clear, press HOLD again.
Need Help? Call 1-800-421-1130
TO SET TIME & DAY
• Rotate Dial to SET
DAY/TIME.
• Press UP to change
current day.
• Press NEXT.
Rotate the
dial to the
RUN
position
to close the
door.
The Active Program Period
Liquid Crystal
Display
Fan
Switch
System
Switch
Easy to
follow
instructions
Programming
Dial
Thermostat
Body
The Set
Temperature
FIGURE A
Thermostat
Cover
Button to Light Display
HEAT
OFF
COOL
AUTO
ON
FAN
RESET
HOLD
NEXT
RUN
FILTER
SET
SUNDAY
PROGRAM
SET
SATURDAY
PROGRAM
SET
WEEKDAY
PROGRAM
SET
DAY/TIME
DOWN
UP
1500
Patents Pending
MO
DAY
HEAT
PM
SIMPLIFIED INSTRUCTIONS
•Press UP/DOWN to set time.
TO SET PROGRAMS
•Rotate Dial to SET
TEMPORARY TEMPERATURE OVERRIDE
•Press UP/DOWN to adjust set temperature.
•To clear OVERRIDE press UP/DOWN until
original set temperature appears or wait for
h
f
h
n
TO SET TIME & DAY
•Rotate Dial to SET
DAY/TIME.
•Press UP to change
n
HEAT
OFF
COOL
AUTO
ON
FAN
RESET
HOLD
NEXT
RUN
FILTER
SET
SUNDAY
PROGRAM
SET
SATURDAY
PROGRAM
SET
WEEKDAY
PROGRAM
SET
DAY/TIME
DOWN
UP
1500
Patents Pending
MO
DAY
HEAT
PM
SIMPLIFIED INSTRUCTIONS
•Press UP/DOWN to set time.
TO SET PROGRAMS
•Rotate Dial to SET
TEMPORARY TEMPERATURE OVERRIDE
•Press UP/DOWN to adjust set temperature.
•To clear OVERRIDE press UP/DOWN until
original set temperature appears or wait for
TO SET TIME & DAY
•Rotate Dial to SET
DAY/TIME.
•Press UP to change
DOWN
UP
M
O
D
A
Y
H
E
A
T
P
M
Choose Heat or Cool
Escoja Calentar O Enfríar
Set Day & Time
Programe el día y la hora
Installs Easily
Fácil de Instalar
Easy as
1–2–3
INSTALLATION AND OPERATING INSTRUCTIONS
INSTALLATION
Please read all instructions carefully
before beginning installation.
TOOLS REQUIRED
#1 Phillips screwdriver (small)
Drill with 3/16-in. (4.8mm) bit
THERMOSTAT LOCATION
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.
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.
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.
6. Do not install the unit until all construction work and painting has been completed.
7. This thermostat does not require leveling.
CAUTION
To avoid electrical shock and
to prevent damage to the
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.
REMOVING THE OLD THERMOSTAT
Switch electricity to the furnace and air conditioner
OFF; then proceed with the following steps.
2. 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.
3. Loosen all screws on the old thermostat and remove it from the wall.
MOUNTING THE TX1500 ON THE WALL
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.
CAUTION
Read instructions carefully
before removing any
wiring from existing
thermostat. Wires must be
labeled before they are
removed. When removing
wires from their terminals,
ignore the color of the
wires since these may not
comply with the standard.
Y
W
1. 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.
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.
Y
W
R
2. Fill wall opening with
non-combustible
insulation to prevent
drafts from affecting
the thermostat.
Y
W
1. Strip insulation 3/8 in.
(9.5mm) from wire ends
and clean off any corrosion.
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