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. Follow the installation procedures
carefully, and save these instructions for future reference. This will save you time and minimize the
chance of damaging either the thermostat or the systems that it controls. NOTE: These instructions
may contain information beyond that required for your particular installation.
This thermostat can be used with most single-stage 24 volt: gas, oil or electric heating and cooling
systems, single-stage heat pumps, or gas Millivolt heating systems.
It cannot be used with: 3-wire zone valves, 120/240 volt heating elements, or multi-stage heat pumps.
Ask your dealer for other LUX thermostats to control those systems.
Screwdrivers, wire stripper / cutter, and possibly a drill with assorted bits (new installations only).
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.
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.
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.
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. 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.
4. 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).
1. 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.
2. Securely tighten all of the electrical terminal screws, including any unused ones. Be careful not to
over tighten the screws, they only need to be snug.
** Complete heating and/or cooling system wiring can be found in the WIRE IDENTIFICATION AND
WIRING SCHEMATICS section of this instruction sheet. The schematics shown provide component
information for brand new installations or for unreferenced wires.
On the circuit board, there are hardware settings called “jumpers”. Each
jumper has 3 metal pins, and a small black cap. The cap is moved to
either the top two pins or the lower two pins. Changes to these options
are recognized every time the HEAT/OFF/COOL mode switch is moved.
JP1 (CTRL):
[UP = Manual Operation] The thermostat operates manually,
and only shows the room and set temperatures. In this mode, there are
no temperature programs, days of the week, or clock times. [DOWN =
Program Operation, default] The thermostat follows four temperature
programs: MORN, DAY, EVE, and NITE. Each period has a start time and
a set temperature.
JP2 (SCALE):
[UP = Celsius] This setting displays all temperature values in C˚ degrees. [DOWN =
Fahrenheit, default] All temperature values are displayed in F˚ degrees.
JP3 (BATT):
[UP = None] This setting only applies if you are NOT using batteries in the thermostat,
and are powering the thermostat entirely from the system (“C” wire terminal). [DOWN = Batt, default]
This setting, regularly monitors the battery level, and shows “LOW BAT” on the screen if the batteries
need replaced. Use this setting at all times when batteries are physically present in the thermostat.
JP4 (HP):
[UP = Heat Pump] Use this setting if you have a heat pump unit (which looks just like an
outside air conditioning unit, but is used for both cooing and heating). [DOWN = non-HP, default] This
setting is used for the majority of all heating systems that are not heat pumps. Examples for this
setting would be: natural gas furnace, hot water baseboard heat, and oil heat.
JP5 (FAN):
[UP = Electric / HP] This setting runs the system’s blower fan when heat is called for, and
is required for systems that do not control their own fan while in HEAT mode. Heat pump systems,
and units with an electric heating element typically require this setting. [DOWN = Gas, default] This
setting lets the heating system control the blower fan automatically by itself. Types of systems that
would typically use the “Gas” fan setting would be: natural gas furnace, propane furnace, and oil
furnace.
JP6 (B/O):
[UP = “B”] This setting energizes the “B/O” wire terminal at all times in HEAT mode, and is
not energized in COOL mode. This setting is not typical, and is only needed for certain brands of heat
pump units, such as: Rheem, Ruud, Goettl, and Bard. [DOWN = “O”, default] This setting energizes
the “B/O” wire terminal at all times in COOL mode, and is not energized in HEAT mode. This setting is
used for the majority of heat pump units with the exception of only a few brands.
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 SWITCH:
When this switch is in AUTO, the blower fan (if present in your system) will
automatically cycle on and off by itself when 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 in OFF mode.
MULTI-FUNCTION, SET SLIDE SWITCH:
Unless other settings are being adjusted, this switch should
always remain in the RUN position for the thermostat to control temperature. When this switch is in
the DAY/TIME position, the day and clock can be changed. When this switch is in the WEEKDAY or
WEEKEND positions, the heating and cooling temperature program periods can be adjusted. NOTE:
this switch is only used in “Program” mode. When the thermostat is used in “Manual” control mode,
all four of the switch positions will act like the RUN position.
RESET BUTTON:
There is a small recessed push button located to the left of the DOWN button, which
can be pressed with a pen/pencil, paper clip, or similar object. A single press of this button causes
the LCD display screen to become fully populated, the heating/cooling load relay to cycle off, and
performs an internal system check of the thermostat components. If your thermostat is acting in an
erratic manner, pressing the Reset button may remedy this behavior. If your thermostat continues to
act erratically, a Full Software Reset may be needed. This and other additional features that can be
accessed using the same Reset button, which are explained in the ADVANCED FEATURES section of
this manual.
SET DAY AND TIME:
Place the Set Slide Switch into the DAY/TIME position. With the day flashing,
press UP or DOWN to set the day of the week. Press NEXT and the clock will start flashing. Use UP
or DOWN to set the time, making sure the AM/PM indication is correct. Holding UP or DOWN will
make the clock digits scroll rapidly. Return the Set Slide Switch to RUN.
HEATING AND COOLING
: Basic operation of your heating or cooling system can be obtained with the
Set Slide Switch in the RUN position and choosing either HEAT or COOL on the System Mode Switch.
When the thermostat is first powered up, it will follow a default temperature routine that is preset from
the factory (shown below).
TEMPERATURE OVERRIDE:
While in Program 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.
MINIMUM RUN TIME:
The thermostat has an internal time delay of 5 minutes between load-on and
load-off activations to prevent heating or cooling system damage, which can occur from very frequent
cycling. If heating or cooling does not turn on right away with a change in set temperature, please
wait 5 minutes and the system should resume normal operation.
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. To enter Hold mode: press HOLD one time and the word Hold
will appear in the display. To cancel a Hold, press HOLD one more time.
STATIC NOTICE:
This thermostat is protected against normal minor 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.
LCD DISPLAY BACKLIGHT:
The display screen has backlighting that will 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 backlight is on, will reset the
timer, causing the screen to remain illuminated for an additional 10 seconds.
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.
WEEKDAY PROGRAMS:
Move the Set Slide Switch to WEEKDAY. You will be programming all five
weekdays at the same time. Use UP or DOWN to adjust the start time for the MORN period, then press
NEXT to advance. Use UP or DOWN to adjust the set temperature for the MORN period, then press
NEXT to advance. Now adjust the start time and set temperature for the DAY period, pressing NEXT
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 you are finished setting all four periods, continue
pressing NEXT to review your entries for all 4 periods. Move the Set Slide Switch to the RUN position
if you are finished, or to WEEKEND to adjust the periods for Saturday or Sunday periods.
WEEKEND PROGRAMS:
Move the Set Slide Switch to WEEKEND. You will be programming both
Saturday and Sunday at the same time. You will begin with the start time for the MORN period, and
use the same steps that you did for setting the Weekday periods, pressing NEXT to advance through
the values. Return the Set Slide Switch to the RUN position when you are finished.
TEMPERATURE SWING:
The amount of temperature variation between load-on and load-off is changed
by adjusting the swing setting. The default value is #1, and the adjustment range is from #1 to #9. A
smaller swing number makes the temperature control more precise and constant, and increases the
number of cycles per hour. A larger swing number will produce a greater variation between load-on
and load-off events, and decreases the number of cycles per hour. To adjust the swing: place the Set
Slide Switch in the RUN position, and press both NEXT and HOLD at the same time. Use UP or DOWN
to change the setting, then press NEXT when finished.
TEMPERATURE CALIBRATION:
This thermostat is calibrated at the factory and in most cases,
alterations to this setting should not be required. The Calibration feature allows you to manually offset
the room temperature measurement by as much as plus or minus 5°F (3°C) degrees from its original
value. 0°F (0°C) is the default setting. To adjust the Calibration: place the Set Slide Switch in the
RUN position, and the System Mode switch in the OFF position. Press both UP and DOWN together for
at least 4 seconds. Use UP or DOWN to change the setting, then press NEXT when finished.
KEYPAD LOCKOUT:
You can lock the front panel buttons to prevent unauthorized tampering of your
thermostat settings. The following examples use the default lock code of “0000”. If you have altered
the lock code to use your own code, use that in place of “0000” in the following instructions.
NOTE: These keypad lock instructions need to be performed in a timely manner, as the thermostat will
timeout and automatically exit the keypad lock screen and return to the normal run screen after 12
seconds without a button press.
TO LOCK THE KEYPAD: Place the Set Slide Switch in the RUN position, and press NEXT for at least 6
seconds. Enter the correct code by using UP or DOWN to change the flashing digit, and use NEXT to
cycle through which digit is flashing. Press NEXT for at least 4 seconds. A padlock should appear on
the screen to confirm that the thermostat is now locked.
TO UNLOCK THE KEYPAD: A press of any button will show “0000” on the screen. Enter the correct
code by using UP or DOWN to change the flashing digit, and use NEXT to cycle through which digit is
flashing. Press NEXT for at least 4 seconds. The padlock should disappear, and the thermostat should
now be unlocked. If you try to unlock the thermostat by entering a code that is not correct, the
display will flash “8888” on the screen.
TO CHANGE THE LOCK CODE: First ensure that the thermostat is unlocked, and the Set Slide Switch is
in the RUN position. Press NEXT for at least 6 seconds. When “0000” is displayed, release NEXT then
press HOLD for at least 4 seconds until the word “SET” appears. Enter your new desired code by
using UP or DOWN to change the flashing digit, and use NEXT to cycle through which digit is flashing.
Press NEXT for at least 4 seconds until the word “SET” is no longer shown. Your new code has been
accepted. You may either: press NEXT for at least 4 seconds to lock the thermostat using your new
code, or let the screen timeout on its own after 12 seconds and return to the normal run screen.
IF YOU FORGET YOUR LOCK CODE: Place the Set Slide Switch in the RUN position, and perform a
single press of the RESET button (located to the left of the DOWN button). The screen will change to
become fully populated with all segments shown. After the screen returns to a normal display, enter
the following four-button sequence, using a single press for each button: UP, UP, UP, DOWN. You
should leave approximately one second between button presses. If the thermostat was already
unlocked when you started this procedure, the screen will remain in the normal run display, and your
lock code has been returned to the default of “0000”. If the thermostat was in a locked state when you
started this procedure, you will see the Enter Unlock Code screen with “1000” shown due to the
buttons you recently pressed. Press DOWN one time so that the display shows “0000”, and press
NEXT for at least 4 seconds. The padlock should disappear, and the thermostat should now be
unlocked, and showing the normal run display. When you use this Reset Lock Code procedure, no
changes will be made to other thermostat settings or options.
TEMPERATURE LIMIT STOPS:
There are two independent set temperature stops: a maximum heat set
temperature, and a minimum cool set temperature. Each of these temperature stops is user adjustable
in one-degree increments. The heat limit stop prevents the set temperature from being adjusted higher
than the heat limit setting. The cool limit stop prevents the set temperature from being adjusted lower
than the cool limit setting.
To set the heat and cool set temperature limit stops, always start with the System Mode switch in the
OFF position, and the Set Slide switch in the RUN position. Press and hold the UP button while sliding
the System Mode switch, either from OFF to HEAT (to adjust the maximum heat set temperature), or
from OFF to COOL (to adjust the minimum cool set temperature). The words “SET”, and either “LIM
HEAT” or “LIM COOL” will be displayed on the LCD screen while you are setting the heat or cool limits
respectively. While in the adjustment mode for each of the temperature stops, use the UP and DOWN
buttons to adjust the limit value, just as you would for adjusting the set temperature under normal
operation. NOTE: If no buttons are pressed for 4 seconds, the thermostat will accept the limit value
that was on the screen at that time, and return to the normal run screen for the current System Mode
switch position. Once you have adjusted the Set Temperature Limit Stops, you should return to the
adjustment mode again for both heat and cool to confirm your desired limit settings for both
temperature modes.
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: place the Set Slide Switch in the RUN position, and
perform a single press of the RESET button (located to the left of the DOWN button). The screen will
change to become fully populated with all segments shown. After the screen returns to a normal
display, enter the following four-button sequence, using a single press for each button: UP, UP, DOWN,
DOWN. You should leave approximately one second between button presses. The cooling terminal can
now be activated one time without waiting for the delay, and once activated the thermostat will return
to normal run mode with delays present. When you use this Compressor Protection Bypass procedure,
no changes will be made to other thermostat settings or options.
FULL SOFTWARE RESET:
This complete reset returns all heating and cooling temperature programs,
and all user changeable software options, to their factory default values. It is recommended that you
write down your current heating and cooling program values for reference prior to performing a
software reset. To perform a software reset: move the System Mode switch in the OFF position, and
the Set Slide switch to the RUN position. Perform a single press of the RESET button (located to the
left of the DOWN button). The screen will change to become fully populated with all segments shown.
After the screen returns to a normal display, enter the following four-button sequence, using a single
press for each button: UP, DOWN, UP, DOWN. You should leave approximately one second between
button presses. After the software reset steps have been performed, you will not notice anything
different on the screen, and the thermostat will be ready for normal operation (you may wish to adjust
the heating and cooling programs to suit your temperature preferences).
This thermostat is powered by two “AA” Alkaline batteries. The batteries should be replaced AT LEAST
once per year (or sooner, if “LOW BAT” battery symbol appears in the lower left portion of the display
screen as shown below. The batteries are located on the back of the circuit board, and can be
accessed by pulling the front portion of the thermostat straight outwards and removing it from the
wall. 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 latch properly.
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
http://www.luxproducts.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.
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 is considered to be a hazardous material. If this product is replacing a thermostat that
contains mercury in a sealed tube, contact your local waste management authority for instructions
regarding recycling and proper disposal. It may be unlawful in your state to place it in the trash.
LP0511D
5/2-Day Programmable Thermostat
U P
D O W N
OFF
PERIOD
MORN
DAY
EVE
NITE
HEAT MODE
6:00 AM 70
°
F (21
°
C)
8:00 AM 62
°
F (17
°
C)
6:00 PM 70
°
F (21
°
C)
10:00 PM 62
°
F (17
°
C)
COOL MODE
6:00 AM 78
°
F (26
°
C)
8:00 AM 85
°
F (29
°
C)
6:00 PM 78
°
F (26
°
C)
10:00 PM 82
°
F (28
°
C)
52101
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.
Lux Products Corporation - Mt. Laurel, New Jersey 08054 - http://www.luxproducts.com
INSTALLATION AND OPERATING INSTRUCTIONS
TOOLS YOU MAY NEED:
REMOVAL OF OLD THERMOSTAT:
SYSTEM COMPATIBILITY:
THERMOSTAT MOUNTING LOCATION:
INSTALLATION OF NEW THERMOSTAT:
THERMOSTAT BASIC OPERATION:
TEMPERATURE PROGRAMS:
THERMOSTAT FRONT PANEL:
ADVANCED FEATURES:
WIRING TERMINAL CONNECTIONS:
SYSTEM CONFIGURATION AND SETUP OPTIONS:
BATTERY REPLACEMENT:
TECHNICAL SUPPORT:
LIMITED WARRANTY:
MERCURY WARNING AND RECYCLING NOTICE:
© 2 0 1 1 L U X P R O D U C T S C O R P O R A T I O N . A L L R I G H T S R E S E R V E D
