Lux Products P720 Thermostat User Manual

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P721  
7-DAY or 5/2-DAY PROGRAMMABLE,  
OR NON-PROGRAMMABLE THERMOSTAT  
INSTALLATION AND OPERATING INSTRUCTIONS  
52206  
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. Please connect wires using the terminal letter designations.  
Thank you for your confidence in our product. To obtain the best results from  
your investment, please read and follow the installation procedures carefully, and  
one step at a time. This will save you time and minimize the chance of damaging  
either the thermostat or possibly your heating and cooling system. These  
instructions may contain information beyond that which may be required for your  
particular installation.  
CAUTIONS AND WARNINGS . . . . . . . . . . 2  
SYSTEM COMPATIBILITY . . . . . . . . . . . . 3  
FEATURES . . . . . . . . . . . . . . . . . . . . . . . 4  
TOOLS YOU MAY NEED . . . . . . . . . . . . . . 4  
MOUNTING LOCATION . . . . . . . . . . . . . . 5  
REMOVE OLD THERMOSTAT . . . . . . . . . . 5  
INSTALL THERMOSTAT BASE . . . . . . . . . 6  
WIRING INFORMATION . . . . . . . . . . . . . . 7  
WIRING DIAGRAMS . . . . . . . . . . . . . . . . 9  
COMPLETE THE INSTALL . . . . . . . . . . . 15  
FRONT PANEL ITEMS . . . . . . . . . . . . . . 16  
SYSTEM CONFIGURATION AND SETUP  
OPTIONS . . . . . . . . . . . . . . . . . . . . . . . 17  
OPERATING INSTRUCTIONS . . . . . . . . . 19  
TEMPERATURE PROGRAMS . . . . . . . . . 21  
ADVANCED FEATURES . . . . . . . . . . . . . 23  
BATTERY REPLACEMENT . . . . . . . . . . . 24  
TECHNICAL ASSISTANCE . . . . . . . . . . . 24  
LIMITED WARRANTY . . . . . . . . . . . . . . 25  
MERCURY NOTICE . . . . . . . . . . . . . . . . 25  
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 Procter & Gamble Company  
© 2015 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED  
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CAUTIONS AND WARNINGS:  
• This thermostat requires batteries to operate and failure or sub-standard  
performance of the batteries may impair or prevent the correct operation of  
the thermostat. Use Duracell® or Energizer® alkaline batteries ONLY for all  
LUXPRO thermostats requiring batteries. BE SURE TO CHANGE THE BATTERIES  
AT LEAST ONCE A YEAR, or whenever you see the LO BATT indication on the  
screen. Failure to follow these battery instructions could result in property  
damage and/or personal injury.  
• The electrical rating for this thermostat is 1.5 Amps per terminal, with a  
maximum total load of 2.0A for all terminals combined.  
• The thermostat contains parts that may wear out through use and are  
susceptible to failure if over-loaded or used in a manner other than as  
indicated in the documentation.  
• Check unoccupied residences regularly to ensure that all systems are  
operating properly.  
• Check any heating/air-conditioning system including this product before  
operation and at regular intervals.  
• Electrical interference, static electricity, failure or substandard performance of  
batteries, wiring defects in the installation and/or characteristics of the  
connected HVAC devices may prevent the system from regulating heating and  
cooling as anticipated.  
• The thermostat is a sensitive device and dropping the product can cause  
damage to critical components. If the product is dropped or shaken violently  
during transport or installation then it should be replaced immediately.  
• Persons with physical or mental limitations may not be able to promptly  
respond to a malfunction of the heating/air-conditioning system.  
• All residents should be made aware of the potential in any system for  
malfunctions that could cause continuous heating or cooling and should be  
familiar with the operation and location of the heating/cooling appliance on/off  
switch.  
• Read the instruction manual completely before installing the thermostat. You  
should consult a qualified HVAC technician or an electrician if you do not fully  
understand the installation instructions.  
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P721  
LCD Display Screen  
Fan  
Mode  
Switch  
SET, NEXT,  
and HOLD  
Buttons  
Fan  
Auto  
On  
Set  
Next  
Hold  
Heat  
Off  
Cool  
System  
Mode  
Switch  
UP and DOWN Buttons  
SYSTEM COMPATIBILITY:  
The electrical rating for this thermostat is 1.5 Amps per terminal, with a  
maximum total combined load of 2.0A for all terminals combined.  
COMPATIBLE WITH:  
• Most 24-volt, heating and cooling systems  
• 2 stage heat / 1 stage cool: gas, oil, or electric systems  
• 2-wire hydronic (hot water) zone valves  
• Millivolt heaters (including wall heaters / gas fireplaces)  
NOT COMPATIBLE WITH:  
• 120/240 VAC line-voltage systems (without a transformer)  
• Heat pump systems  
• 3-wire hydronic (hot water) zone valves  
(ask your LUXPRO dealer for thermostats to control these systems)  
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FEATURES:  
• 7-day programming, 5/2-day programming, or non-programmable options  
• All days can be programmed separately  
• User-selectable periods per day (2 or 4)  
• Lighted display  
• Keypad lockout for unauthorized users  
• Manual temperature hold  
• Temporary temperature override  
• Adjustable temperature differential / cycle-rate  
• User temperature calibration  
• Adjustable heat/cool set temperature limit stops  
• Dual-powered (battery and/or 24-volt system powered)  
• F/C temperature display  
• 5/2-minute selectable time delay for equipment protection  
TOOLS YOU MAY NEED:  
• Screwdrivers  
• Wire Stripper  
• Wire Cutter  
• Drill with assorted drill bits (new installations only)  
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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. Do not locate the thermostat where unusual heating or cooling conditions may  
be present, such as: direct sunlight, above a lamp, television, or radiator, or on  
a wall next to an exterior door or window.  
4. Do not locate in a damp environment, as this can lead to corrosion that may  
shorten thermostat life.  
5. If painting or construction work is still ongoing, cover the thermostat  
completely or wait until this work is complete before installation.  
WARNING:  
All wiring must conform to the local codes and ordinances that are in your  
particular location.  
REMOVE OLD THERMOSTAT:  
1. Turn OFF the electricity to all heating and cooling  
components. Do not turn the electricity back on until  
all work is completed.  
2. Remove the front portion of your old thermostat to  
expose the wiring connections.  
FF  
O
3. Write down the letters printed near each wire terminal  
that is used, and also the color of each wire that is  
connected to it. Self-adhesive wire labels are also  
enclosed.  
4. Carefully remove the wires one at a time, and bend them in a manner so that  
they do not fall back inside the wall. Do not allow bare wire ends to touch  
each other.  
5. Loosen the mounting screws for the old thermostat and carefully remove it  
from the wall.  
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INSTALL THERMOSTAT BASE:  
Set  
Next  
Hold  
Heat  
Off  
Cool  
HOUSING RELEASE TABS  
(UNDERNEATH BOTTOM EDGE)  
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. Separate new thermostat housing using your thumb and index finger. Provide  
pressure in opposite directions to the release tabs under the bottom edge of  
the housing.  
4. Route the wires through the opening in the new thermostat base plate, and  
hold the base against the wall. Try to line up the screw holes from the prior  
thermostat, and install the mounting screws.  
5. If the previous holes cannot be used, hold the thermostat base against the  
wall so that it appears straight and level (position the base for best  
appearance) and mark for the new screw holes. Attach the base to the wall  
using the screws provided (use the supplied plastic anchors if needed when  
mounting to a soft material such as drywall).  
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WIRING INFORMATION:  
CONNECTING THE WIRES:  
When attaching the wires to the thermostat, please ensure that the bare wire  
ends are held ALL the way into the terminal block while the screw is being  
tightened.  
WIRING BASE PLATE NOTICE:  
This thermostat model is part of a family of similar models that have the same  
general visual appearance. Even though this base plate may look the same as  
base plates from other models, the wiring connections may have different  
terminal letters for different purposes. Please do not interchange the back plates  
and/or thermostat front halves of other similar looking models. Doing so may  
cause undesired heating and/or cooling operation to occur.  
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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. For example:  
Diagram #1 shows the fan wire as optional. If your system does not have a  
fan, than this terminal will not be used.  
• Terminal letters shown in black represent typical wiring applications.  
Depending upon the brand of your specific system or thermostat, your terminal  
letters may not match exactly. Terminal letters shown in gray represent other  
possible wiring designations that you might see on your existing thermostat  
terminals.  
• The optional “C” terminal is used for powering the thermostat by the 24-volt  
system, using the System Common wire. This can be used alone, or in  
addition to installing batteries as a backup. NOTE: connecting the System  
Common wire to the thermostat is not necessary for heating and cooling to  
function properly.  
• If your old thermostat has both a “Y” and “C” wire both present, then “C” is  
most likely a System Common wire.  
• If replacing an old thermostat that has a mechanical clock, there may be two  
wires labeled as “C” for the clock power. Tape off these wires and do not  
connect them to the “C” terminal of this thermostat.  
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WIRING DIAGRAMS:  
DIAGRAM  
SYSTEM TYPE / DESCRIPTION  
PAGE #  
#1  
#2  
#3  
#4  
CONVENTIONAL:  
CONVENTIONAL:  
CONVENTIONAL:  
CONVENTIONAL:  
HEATING ONLY ..................................................10  
1-STAGE  
2, 3, 4 WIRES  
HEATING ONLY ..................................................11  
2-STAGE  
3, 4, 5 WIRES  
COOLING ONLY .................................................12  
1-STAGE  
3, 4 WIRES  
HEATING AND COOLING .....................................13  
1 OR 2-STAGE HEAT  
1-STAGE COOL  
4, 5, 6 WIRES  
#5  
CONVENTIONAL:  
HEATING AND COOLING .....................................14  
TWO-TRANSFORMERS  
5, 6, 7 WIRES  
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2 / 3 / 4 WIRES  
CONVENTIONAL, NON HEAT PUMP  
1-STAGE, HEAT ONLY  
(INCLUDING MILLIVOLT)  
OPTIONAL  
SYSTEM COMMON  
#1  
C
G
R
X
F
FAN  
Factory  
RH-RC  
Jumper  
Wire  
RH  
V
4
24V HEAT  
TRANSFORMER  
Installed  
W
W1  
HEATER  
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL,  
GRAY TERMINAL LETTERS ARE BRAND SPECIFIC  
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3 / 4 / 5 WIRES  
CONVENTIONAL, NON HEAT PUMP  
2-STAGE, HEAT ONLY  
OPTIONAL  
SYSTEM COMMON  
#2  
C
G
R
X
F
FAN  
Factory  
RH-RC  
Jumper  
Wire  
RH  
V
4
24V HEAT  
TRANSFORMER  
Installed  
W
W1  
HEATER  
(1ST STAGE)  
W2  
2ND STAGE  
HEAT  
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL,  
GRAY TERMINAL LETTERS ARE BRAND SPECIFIC  
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3 / 4 WIRES  
CONVENTIONAL, NON HEAT PUMP  
1-STAGE, COOL ONLY  
OPTIONAL  
SYSTEM COMMON  
#3  
C
G
X
F
FAN  
Factory  
RH-RC  
Jumper  
Wire  
Installed  
R
Y
RC  
Y1  
V
6
24V COOL  
TRANSFORMER  
A/C  
UNIT  
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL,  
GRAY TERMINAL LETTERS ARE BRAND SPECIFIC  
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4 / 5 / 6 WIRES  
CONVENTIONAL, NON HEAT PUMP  
1 OR 2-STAGE HEAT AND 1-STAGE COOL  
OPTIONAL  
SYSTEM COMMON  
#4  
C
G
R
X
F
FAN  
24V  
Factory  
RH-RC  
Jumper  
Wire  
RH  
V
TRANSFORMER  
Installed  
W
Y
W1  
Y1  
4
6
HEATER  
(1ST STAGE)  
A/C  
UNIT  
W2  
2ND STAGE  
HEAT  
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL,  
GRAY TERMINAL LETTERS ARE BRAND SPECIFIC  
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5 / 6 / 7 WIRES  
CONVENTIONAL, NON HEAT PUMP  
1 or 2-HEAT / 1-COOL, WITH TWO-TRANSFORMERS  
OPTIONAL  
SYSTEM COMMON  
#5  
C
G
X
F
FAN  
REMOVE  
Factory  
RH-RC  
Jumper  
Wire  
RH  
RC  
W
R
V
V
4
6
24V HEAT  
TRANSFORMER  
R
24V COOL  
TRANSFORMER  
W1  
Y1  
HEATER  
(1ST STAGE)  
Y
A/C  
UNIT  
W2  
2ND STAGE  
HEAT  
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL,  
GRAY TERMINAL LETTERS ARE BRAND SPECIFIC  
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COMPLETE THE INSTALL:  
INSTALL BATTERIES INTO THERMOSTAT: Install two brand new Energizer® or  
DURACELL® “AA” size alkaline (only) batteries, into the thermostat’s battery  
compartment. Ensure the batteries are installed in the proper direction.  
GAS / ELEC CIRCUIT BOARD OPTION (“G” TERMINAL FAN OPERATION): This  
setting is a plastic shorting cap called a jumper. This jumper must remain  
installed, and set to either GAS or ELECTRIC for your system to work properly.  
This setting changes how your system’s blower fan (if applicable) is controlled  
while the thermostat is in HEAT mode, when the Fan switch in the AUTO position.  
This setting does not affect the fan operation while in COOL mode.  
When set to “GAS”, the blower fan is controlled solely by the heating system  
itself. Systems that would typically use the “GAS” setting would be: natural gas,  
propane, or oil furnaces, and boilers.  
When set to “ELEC”, the blower fan is controlled directly by the thermostat. This  
setting is required for heating systems that do not control their own fan, such as  
HEAT PUMPS, and units that only have an electric-resistive heating element as  
the heat source.  
NOTE: If your blower  
fan does not operate  
properly after  
installation, move the  
Gas / Electric option  
to the “Electric”  
setting.  
C
JP1  
G
RH  
RC  
W1  
Y
W2  
ELEC  
GAS  
(default)  
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FRONT PANEL ITEMS:  
HEAT / OFF / COOL, SYSTEM MODE SWITCH: Set this switch to HEAT to control  
your heating system, and COOL to control your cooling system. The OFF position  
will disable both the heating and cooling units.  
AUTO / ON, FAN MODE SWITCH: When this switch is in AUTO, the blower fan (if  
present in your system) will automatically cycle on and off by itself while heating  
or cooling is running. When in the ON position, the blower fan will run constantly  
with or without a demand for heating or cooling, even when the System Mode  
switch is in the OFF position.  
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).  
SET BUTTON: This button is used to access the temperature program settings  
when in heat or cool mode, and for adjusting the day and clock while in off  
mode.  
NEXT BUTTON: This is used when setting items such as software options, and  
temperature programs. When items on the screen are flashing during  
adjustments, pressing the NEXT button will cycle through which item is flashing.  
HOLD BUTTON: This button activates and deactivates the manual Temperature  
Hold feature, which maintains a fixed set temperature indefinitely without  
following a program routine. This button is not used when ITEM #02 below is set  
to “3” for manual non-programmable.  
UP / DOWN BUTTONS: The UP and DOWN buttons are used to control the set  
temperature, or adjust any other on-screen items. Typically, an item that is  
flashing can currently be adjusted.  
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SYSTEM CONFIGURATION AND SETUP OPTIONS:  
Setup options for how the thermostat will function, along with choosing your  
particular system type, are performed using a menu on the display screen.  
TO ACCESS THE SETUP MENU: Move the System Mode switch into the OFF  
position, and then hold down the SET button for approximately 5 seconds until  
the screen changes. The menu will always start with item #01, and is advanced  
to each following item by a single press of the NEXT button. The options for each  
item are changed using the UP or DOWN buttons.  
ITEM #01 (TEMPERATURE SCALE):  
[1] (default) Shows all temperature values in Fahrenheit.  
[2] Shows all temperature values in Celsius.  
ITEM #02 (PROGRAMMING STYLE):  
[1] (default) 5/2-Day Programming. This style uses a weekday program routine  
for Monday, Tuesday, Wednesday, Thursday, Friday, and a separate weekend  
program routine for Saturday and Sunday.  
[2] 7-Day Programming. This style uses a separate program routine for each of  
the 7 days in the week. [3] Manual Non-Programmable. In this setting, there are  
no program routines for the thermostat to follow and the temperature control will  
be set only by the UP and DOWN buttons on the front panel.  
ITEM #03 (PERIOD QUANTITY):  
[1] (default) 4-Periods. Thermostat uses four periods per day (called MORN, DAY,  
EVE, and NITE).  
[2] 2-Periods. The thermostat uses only two periods per day (called DAY and  
NITE).  
ITEM #04 (MAXIMUM HEAT SET TEMP LIMIT):  
[1] (default) Limit 90F (32C). The maximum heating set temperature is 90F (32C)  
degrees with no heat mode temperature restrictions.  
[2] Limit 80F (27C). The maximum heating set temperature is 80F (27C) degrees.  
[3] Limit 70F (21C). The maximum heating set temperature is 70F (21C) degrees.  
[4] Limit 60F (16C). The maximum heating set temperature is 60F (16C) degrees.  
ITEM #05 (MINIMUM COOL SET TEMP LIMIT):  
[1] (default) Limit 45F (7C). The minimum cooling set temperature is 45F (7C)  
degrees with no cool mode temperature restrictions.  
[2] Limit 55F (13C). The maximum cooling set temperature is 55F (13C) degrees.  
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[3] Limit 65F (18C). The maximum cooling set temperature is 65F (18C) degrees.  
[4] Limit 75F (24C). The maximum cooling set temperature is 75F (24C) degrees.  
ITEM #06 (STAGE-2 OFFSET):  
[2, default] This setting is adjusted as a number from 0 to 9. When set to 0  
(ZERO), the second heating stage (W2 terminal) is completely disabled. 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.  
ITEM #07 (DELAY TIME):  
[1] (default) 5 Minutes. Thermostat waits 5 minutes before turning the system  
back on after it was last run. The 5 minute setting is fine for most applications,  
and provides equipment protection by preventing rapid cycling.  
[2] Same operation as above, but reduced to 2 minutes between state changes if  
desired.  
ITEM #08 (TEMPERATURE SWING):  
[1] (default) This is the tightest control, which is plus/minus 0.25F (0.14C)  
degrees from the target set temperature.  
[2 through 9] These alternate values make the temperature control wider with  
more variation. Each incremental setting number adds an additional 0.25F  
(0.14C) degrees onto the initial setting. [9] is the widest control setting, which is  
plus/minus 2.25F (1.25C) degrees from the set temperature.  
ITEM #09 (TEMPERATURE CALIBRATION):  
[0 (zero)] (default) At zero, there are no changes made to the base room  
temperature measurement. The adjustment is from as low as subtracting  
-5F (-3C) degrees from the room temperature, to as high as adding +5F (+3C)  
degrees to the room temperature. The internal temperature sensor is accurately  
calibrated at the factory, and in most cases this setting should not need to be  
altered.  
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OPERATING INSTRUCTIONS:  
SET DAY AND TIME: Place the System Mode switch into the OFF position. Press  
the SET button one time and the backlight will illuminate; press the SET button  
again and the room temperature will disappear from the screen and the day icon  
will flash. With the day flashing, press UP or DOWN to adjust the day of the week  
shown on the screen. Pressing NEXT will advance from setting the day to setting  
the clock, with the time now flashing. Use UP or DOWN to set the time, making  
sure the proper AM/PM indication is correct. Holding the UP or DOWN buttons  
will make the clock digits scroll rapidly. The thermostat will exit the day/time  
adjustment mode if either the SET or NEXT buttons are pressed, or there are no  
button presses for approximately 10 seconds.  
HEATING AND COOLING: Basic operation of your heating or cooling system can  
be obtained by choosing either HEAT or COOL with the System Mode switch. The  
temperature can be adjusted using the UP and DOWN buttons. When the  
thermostat is first powered up, it will follow a default temperature routine that is  
preset from the factory (shown below).  
2-PERIOD CONFIGURATION:  
PERIOD  
DAY  
HEAT MODE  
6:00 AM 70 °F (21 °C) 6:00 AM 78 °F (26 °C)  
COOL MODE  
NITE 10:00 PM 62 °F (17 °C) 10:00 PM 75 °F (24 °C)  
4-PERIOD CONFIGURATION:  
PERIOD  
HEAT MODE  
COOL MODE  
MORN 6:00 AM 70 °F (21 °C) 6:00 AM 78 °F (26 °C)  
DAY  
EVE  
8:00 AM 62 °F (17 °C) 8:00 AM 82 °F (28 °C)  
6:00 PM 70 °F (21 °C) 6:00 PM 78 °F (26 °C)  
NITE 10:00 PM 62 °F (17 °C) 10:00 PM 75 °F (24 °C)  
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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. Any button presses  
that occur while the light is on will reset the 10-second timer, causing the screen  
to remain illuminated for an additional 10 seconds.  
TEMPERATURE OVERRIDE: While in Program RUN mode, the set temperature can  
be temporarily changed by pressing UP or DOWN. The set temperature will return  
to the programmed value stored in memory when the start time of the next  
upcoming program period is reached (Morn, Day, Eve, Nite). While a Temporary  
Override is in effect, the word “OVERRIDE” will be shown in the display screen.  
An Override may be cancelled moving the mode switch to OFF, then back to HEAT  
or COOL.  
TEMPERATURE HOLD: A Temperature Hold is used for maintaining a fixed set  
temperature. Once a Hold is initiated, the thermostat will maintain the set  
temperature indefinitely. A Hold may be used for days, weeks, or even months at  
a time, as long as the thermostat has adequate power. To enter Hold mode:  
press the HOLD button one time and the word “HOLD” will appear in the display.  
To cancel a Hold, press the HOLD button one more time. If a complete power  
failure occurs during a Temperature Hold, the thermostat will continue to remain  
in Hold mode even after the power comes back on. NOTE: If you plan to leave  
the thermostat in Hold mode for an extended duration (unattended), it is  
advisable to install new Energizer® or DURACELL® "AA" size alkaline batteries  
prior to leaving to ensure reliable operation of your heating and cooling system.  
STATIC NOTICE: This thermostat is protected against normal static electric  
discharges, however to minimize the risk of damaging the unit in extremely dry  
weather, please touch a grounded metal object before touching your thermostat.  
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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  
(SYSTEM CONFIGURATION AND SETUP OPTIONS), the thermostat will only use the  
DAY and NITE periods. The MORN and EVE periods will not be visible on the  
screen.  
SET TEMPERATURE PROGRAMS: Place the System Mode switch into the desired  
temperature mode that you would like to set the program for. The instructions  
below will differ somewhat, depending on whether you are using the 5/2-Day  
programming style or the 7-Day programming style.  
FOR 5/2-DAY PROGRAMMING OPTION: You will set all 5 weekdays, Monday  
through Friday, in one combined process. After the weekdays are complete, you  
can advance to set both weekend days, Saturday and Sunday, in one combined  
process.  
If the backlight is not already illuminated, press the SET button one time to light  
the display. With the screen illuminated, press the SET button one time, and you  
should now see the words SET and PROGRAM shown at the top of the display  
screen, and you should see “Morn” and “MoTuWeThFr” at the bottom of the  
display. Use the UP/DOWN buttons to adjust the start time for the MORN period,  
then press the NEXT button to advance. Use the UP/DOWN buttons to adjust the  
set temperature for the MORN period, then press the NEXT button to advance.  
Now adjust the start time and set temperature for the DAY period, pressing the  
NEXT button after each to advance. Continue with these same steps to adjust the  
start times and set temperatures for the EVE and NITE program periods.  
When the NITE period is finished for the weekdays, the thermostat will advance  
forward to the weekend program. You should see “Morn” and “SaSu” at the  
bottom of the display. Use the UP/DOWN buttons to adjust the start time for the  
MORN period, then press the NEXT button to advance. Continue with these same  
steps to adjust the start times and set temperatures for the DAY, EVE, and NITE  
program periods as desired.  
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FOR 7-DAY PROGRAMMING OPTION: You will be setting each day individually, one  
at a time. After any particular day’s program has been set, you will have the  
ability to copy these values either to just the next day or to the remaining days  
left in the week (described further below).  
If the backlight is not already illuminated, press the SET button one time to light  
the display. With the screen illuminated, press the SET button one time, and you  
should now see the words “SET” and “PROGRAM” shown at the top of the display,  
and “Morn” and “Mo” at the bottom of the display. Use the UP/DOWN buttons to  
adjust the start time for the MORN period, then press the NEXT button to  
advance. Use the UP/DOWN buttons to adjust the set temperature for the MORN  
period, then press the NEXT button to advance. Now adjust the start time and  
set temperature for the DAY period, pressing the NEXT button after each to  
advance. Continue with these same steps to adjust the start times and set  
temperatures for the EVE and NITE program periods.  
After the NITE period is finished for the weekdays, press NEXT and the  
thermostat will advance forward to the Tuesday MORN period. Just like the  
previous day, use the UP/DOWN buttons to adjust the start time then press the  
NEXT button to advance. Continue with these same steps to adjust the start  
times and set temperatures for the remaining periods of the remaining days as  
desired.  
COPY FEATURE: The copy action takes the time and temperature values from the  
previous day, and uses them for the current day. To perform a copy, press and  
release the HOLD button one time per copy. You should see the word “COPY”  
show up in the display screen for approximately one second, and the day of the  
week will have advanced forward to the next day. To keep copying to the next  
upcoming days, press and release the HOLD button for each day that you want to  
copy the previous day’s values into.  
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ADVANCED FEATURES:  
KEYPAD LOCKOUT: You can lock the front panel buttons to prevent unauthorized  
tampering of your thermostat settings.  
TO LOCK THE KEYPAD: Start with the thermostat at rest, and the display backlight  
NOT illuminated. Press the NEXT button one time to illuminate the display  
screen, then press the NEXT button 3 more times, followed by the HOLD button 1  
time.  
TO UNLOCK THE KEYPAD: Start with the thermostat at rest, and the display  
backlight NOT illuminated. Press the NEXT button one time to illuminate the  
display screen, then press the NEXT button 3 more times, followed by the HOLD  
button 1 time.  
SOFTWARE RESET: A Software Reset is used to erase ALL heating and cooling  
temperature programs, and to return all user-adjustable software settings back  
to their original factory default values. To perform a Software Reset, first ensure  
that the thermostat’s Keypad Lockout is not enabled and then move the System  
Mode switch to the OFF position. Press and hold the SET and NEXT buttons  
together for at least 5 seconds. The LCD display screen will become fully  
populated (let go of buttons at this point), and than return to normal. The clock  
will have to be changed to match the current day and time.  
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, first ensure that the thermostat’s Keypad  
Lockout is not enabled and then move the System Mode switch to the OFF  
position. Start with the thermostat at rest, and the display backlight NOT  
illuminated. Press any button one time to illuminate the display screen, and then  
press and hold the NEXT and HOLD buttons together for at least 5 seconds.  
NOTE: there will no visual confirmation on the display screen, however you  
should be able to turn the cooling system on and off without any protection  
delays being imposed. All compressor protection delays (in all modes of  
operation) will be disabled for 5 minutes. After the 5-minute duration has  
expired, the thermostat will return to normal operation automatically.  
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BATTERY REPLACEMENT:  
This thermostat is powered by two “AA” Alkaline batteries. The batteries should  
be replaced AT LEAST once per year to ensure reliable operation (or sooner if  
“LO BATT” appears in the display screen). The batteries are located on the back  
of the thermostat’s circuit board. The front portion of the thermostat can be  
removed from the back half by using the housing release tabs on the bottom  
edge of the thermostat housing.  
When installing new batteries, we recommend using only brand new Energizer®  
or DURACELL®, “AA” size alkaline batteries. Please observe the polarity  
markings shown in the battery compartment to ensure proper installation. When  
finished, line up the front of the thermostat to the base, and firmly press together  
to securely latch the front and back halves together properly.  
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  
guides, answers to the most common technical questions, and also permits you  
to email your questions to our technical support staff at your convenience.  
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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. Implied warranties are limited in duration to three years  
from the 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 location from which the  
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. and Canada only.  
MERCURY WARNING AND RECYCLING NOTICE:  
Mercury is considered to be a hazardous material. If this  
product is replacing an older thermostat that contains mercury  
in a sealed glass tube, please view the information on the  
is a convenient tool that will inform you of the closest drop off  
location for your zip code. If you are unable to access this website, please  
contact your local waste management authority for instructions regarding the  
proper disposal and recycling of your old mercury thermostat.  
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Fan  
Auto  
On  
LUXPRO  
Set  
Next  
Hold  
Heat  
Off  
Cool  
856-234-8803  
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