P722U
SMART TEMP® UNIVERSAL
7-DAY PROGRAMMABLE THERMOSTAT
(FOR BOTH CONVENTIONAL AND HEAT PUMP SYSTEMS)
INSTALLATION AND OPERATING INSTRUCTIONS
52133
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.
SYSTEM COMPATIBILITY . . . . . . . . . 2
FEATURES . . . . . . . . . . . . . . . . . . . 3
TOOLS YOU MAY NEED . . . . . . . . . . . 3
MOUNTING LOCATION . . . . . . . . . . . 4
REMOVE OLD THERMOSTAT . . . . . . . 4
INSTALL THERMOSTAT BASE . . . . . . . 5
WIRING INFORMATION . . . . . . . . . . . 5
CAUTIONS AND WARNINGS . . . . . . . . 6
WIRING DIAGRAMS . . . . . . . . . . . . . 8
HARDWARE SETUP OPTIONS . . . . . . 17
COMPLETE THE INSTALL . . . . . . . . . 19
FRONT PANEL ITEMS . . . . . . . . . . . 19
OPERATING INSTRUCTIONS . . . . . . . 21
TEMPERATURE PROGRAMS . . . . . . . 23
ADVANCED FEATURES . . . . . . . . . . 24
BATTERY REPLACEMENT . . . . . . . . . 33
TECHNICAL ASSISTANCE . . . . . . . . . 33
LIMITED WARRANTY . . . . . . . . . . . 34
MERCURY NOTICE . . . . . . . . . . . . . 34
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
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© 2013 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED
FEATURES:
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1 or 2-Heat / 1 or 2-Cool, 7-day programming
Universal Compatibility for all system types
Each day of the week can be programmed separately
Exclusive LUX® Speed SlideTM for easy programming
User-selectable periods per day (2 or 4)
User-selectable programmable or non-programmable operation
LuxLight® EL (Electro-Luminescent) lighted display
Energy usage monitor
Special program feature
Programmable air filter life timer
Programmable keypad lockout for unauthorized users
Manual temperature hold
Adjustable vacation hold (1 to 30 days)
Temporary temperature override
Adjustable temperature differential / cycle-rate
Adjustable 2nd heat stage Offset setting
User temperature calibration
Adjustable heat/cool set temperature limit stops
Smart recovery
Dual-powered (battery and/or 24-volt system powered)
Battery-free memory storage
F/C temperature display
12/24-hour clock display
5/2-minute selectable time delay for equipment protection
TOOLS YOU MAY NEED:
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Screwdrivers
Wire Stripper
Wire Cutter
Drill with assorted drill bits (new installations only)
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3
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
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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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4
INSTALL THERMOSTAT BASE:
THERMOSTAT TOP VIEW
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).
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.
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CAUTIONS AND WARNINGS:
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The 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 LUX 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.
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The electrical rating for this thermostat is 1.5 Amps per terminal, with a
maximum total load of 3.0A 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.
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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.
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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.
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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.
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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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6
WIRING DIAGRAM NOTES:
(Important, please read all notes before connecting wires)
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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.
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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.
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If your old thermostat has both a “Y” and “C” wire both present, then “C”
is most likely a System Common wire.
For Heat Pump systems, you will use either the “O” terminal or the “B”
terminal on this thermostat, but not both. If your old thermostat has both
an “O” and a “B” wire present, then “B” is likely a System Common wire
and may be connected to the “C” terminal. Connecting a System Common
wire to this thermostat’s “B” terminal may damage the thermostat, and
also your heating and cooling system.
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Some Heat Pump systems have a wire for AUX electric heat (usually W2),
and also a separate wire for Emergency electric heat (usually E). This
thermostat uses the W2 terminal for both AUX and Emergency Heat. Tape
off your “E” wire, and confirm that all components function without it.
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
#5
#6
#7
#8
CONVENTIONAL: HEATING .............................................8
1-STAGE OR 2-STAGE
2, 3, 4, 5 WIRES
CONVENTIONAL: HEATING .............................................9
3-WIRE ZONE VALVE
3, 4 WIRES
CONVENTIONAL: COOLING............................................10
1-STAGE OR 2-STAGE
3, 4, 5 WIRES
CONVENTIONAL: HEATING AND COOLING...........................11
1-STAGE
4, 5 WIRES
CONVENTIONAL: HEATING AND COOLING...........................12
1-STAGE OR 2-STAGE
4, 5, 6, 7 WIRES
CONVENTIONAL: HEATING AND COOLING...........................13
TWO-TRANSFORMERS
5, 6 WIRES
HEAT PUMP:
HEAT PUMP:
HEATING AND COOLING...........................14
SINGLE-STAGE ONLY
4, 5 WIRES
HEATING AND COOLING...........................15
WITH AUX / EMERGENCY HEAT
5, 6 WIRES
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HARDWARE SETUP OPTIONS:
On the thermostat’s circuit board, there is a row of DIP switches, labeled #1
through #9. The position of these switches will change how the thermostat
operates, and also how information is conveyed to you on the LCD display
screen. If you make any changes to these options, the changes are not
recognized unless you either: change the position of the HEAT/OFF/COOL
mode switch, or press the “HW RST” (Hardware Reset) button on the circuit
board. The use of this button is further described in the “ADVANCED
FEATURES” section of this manual.
These option switches are very small and should be moved carefully using
objects such as: eyeglass screwdriver, fine-point pen, toothpick, or similar.
The listing below describes the available choices for each option switch:
ON
1
2
3
4
5
6
7
8
9
SWITCH #1 (SYSTEM): [OFF/DOWN = FURN, 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. [ON/UP = HP] 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).
SWITCH #2 (TYPE): [OFF/DOWN = PROG, default] The thermostat controls
the room temperature by following temperature program periods that you set
up based upon your daily routine. [ON/UP = MAN] The thermostat operates
manually just like a mechanical or non-programmable model. This method
of operation is very basic and only shows the room temperature and set
temperature; there are no temperature programs, days of the week, or clock
times.
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SWITCH #3 (PERIODS): [OFF/DOWN = 4, default] The thermostat uses four
temperature program periods in both heating and cooling (MORN, DAY, EVE,
and NITE). Each period has a separate start time and a set temperature.
[ON/UP = 2] The thermostat operates in the same manner as above, however
there are only two temperature program periods for heating and cooling
(DAY and NITE). This may be more convenient if you are typically home
during the day, and only need the set temperature to be different while you
are sleeping.
SWITCH #4 (SCALE): [OFF/DOWN = F, default] All temperature values are
displayed using the Fahrenheit scale. [ON/UP = C] This setting displays all
temperature values using the Celsius scale.
SWITCH #5 (TIME): [OFF/DOWN = 12 HR, default] This setting displays the
clock times and temperature program period start time values on the screen
using US standard AM and PM values. [ON/UP = 24 HR] This setting
displays the clock and temperature program period start time values on the
screen using the 24 HR military-time format (17:30 hours, 22:00 hours,
without using AM/PM).
SWITCH #6 (DELAY): [OFF/DOWN = 5 MIN, default] This sets the minimum
length of time that Heat or Cool must remain either On or Off, before it will
automatically switch to the alternate On or Off state. This internal delay
prevents rapid cycling of your system and provides equipment protection
particularly for cooling units. The 5-minute setting is fine for most
applications. [ON/UP = 2 MIN] If you feel that your system may need to
cycle more frequently than the thermostat is allowing, then you may use the
2-minute setting.
SWITCH #7 (RECOVERY): [OFF/DOWN = DISABLE, default] The Early
Recovery feature affects how the thermostat transitions from an energy
saving setback (DAY and NITE) program period, to a comfort (MORN and
EVE) program period temperature, when it is following the daily temperature
programs. When this is disabled, the thermostat makes a set temperature
change at the beginning of an upcoming period's start time. [ON/UP =
ENABLE] The Early Recovery feature will calculate the capability of your
system and turn on the heating or cooling early so that the temperature in
your home reaches the desired set point as close as possible to the start of
the period. During the time that the thermostat is performing a recovery, the
words “IN RECOV” will be shown at the top of the display screen, alternating
with the current DAY and PERIOD.
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SWITCH #8 (BATTERY MONITOR): [OFF/DOWN = ON, default] This setting,
regularly monitors the battery level, and shows “LOW BAT” on the screen if
the batteries need to be replaced. Use this setting at all times when
batteries are present in the thermostat. [ON/UP = OFF] This setting only
applies if you are NOT physically using batteries in the thermostat, and are
powering the thermostat entirely from the system (“C” wire terminal).
SWITCH #9 (FAN): [OFF/DOWN = GAS, default] This setting lets the heating
system control the blower fan automatically by itself. Systems that would
typically use the “GAS” setting would be: natural gas, propane, or oil
furnaces. This setting has no effect upon Cool mode operation. [ON/UP =
ELEC/HP] This setting runs the system’s blower fan when heat is called for,
and is required for heating systems that do not control their own fan while
the thermostat is in HEAT mode. Heat pump systems, and units with an
electric heating element typically require this setting.
COMPLETE THE INSTALL:
Once the hardware options are set, install two new Energizer® or DURACELL®
"AA" size alkaline batteries. Ensure that the batteries are installed in the
proper direction as per the markings shown in the battery tray. If the
batteries were already installed before changing the hardware setup options,
change the position of the HEAT/OFF/COOL System Mode switch to accept
the new hardware option switch settings.
FRONT PANEL ITEMS:
These items below are all located behind the door on the front of the
thermostat. To open the door, pull outwards using the small indentation in
the center of the top edge of the thermostat housing.
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.
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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).
MULTI-FUNCTION, SET SLIDE SWITCH: This switch provides an easy way to
quickly access the most commonly used thermostat settings. This switch
has 5 individual positions, and unless a specific setting is being adjusted,
this switch should always remain in the RUN position for the thermostat to
control the room temperature. The other Set Slide switch positions are
described in greater detail in the ADVANCED FEATURES section. NOTE: this
switch is only operable when the thermostat is in “Programmable” mode.
When the thermostat is used in “Manual” control mode, all 5 of the switch
positions will act like the RUN position, except the “FILT/ENRGY” position.
SETBACK BUTTON: This button activates and deactivates the SETBACK
feature, which overrides the set temperature for an adjustable duration. This
feature is described in greater detail in the ADVANCED FEATURES section.
UP / DOWN BUTTONS: The UP and DOWN buttons are used to adjust any
item that can be changed by the user. Examples are the set temperatures,
clock times, and days of the week. In many cases, an item may be flashing if
it can currently be adjusted.
HOLD BUTTON: This button activates and deactivates the manual
Temperature Hold feature, and is also used for activating and deactivating
the Special Program feature. These features are described in greater detail
in the OPERATING INSTRUCTIONS and ADVANCED FEATURES sections.
COPY / EMERG BUTTON: While setting temperature programs, this button
allows you to quickly copy settings from one day to another. When in
Normal Run mode, the usage of this button varies depending upon your
specific system configuration. For heat pump systems, pressing this button
enables your emergency heat function, which is described in greater detail in
the OPERATING INSTRUCTIONS section. For conventional systems, there is
no such thing as emergency heat, so this button will have no effect.
NEXT BUTTON: This button is mostly used while setting items such as
software options, and temperature program periods. When there are several
items on the screen that can be changed, usually one of them is flashing
indicating that it can be adjusted. Pressing the NEXT button will cycle
through which item is flashing.
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OPERATING INSTRUCTIONS:
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 time will start flashing. Use UP or DOWN to set the
time, making sure the AM/PM indication is correct. Holding the UP or DOWN
buttons will make the clock digits scroll rapidly. Return the Set Slide switch
to the RUN position when finished.
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. 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).
PERIOD
HEAT
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 85 °F (29 °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 82 °F (28 °C)
EMERGENCY HEAT: (Heat Pump Configuration Only). While in normal Heat
mode with the Set Slide switch in the RUN position, one single press of the
COPY/EMER button will activate Emergency Heat mode. A single press again
will end Emergency Heat mode, and return back to normal Heat mode. While
in Emergency Heat mode, the word “EMER” will also be shown in the middle
portion of the display screen. If a power loss occurs while in Emergency
Heat mode, the thermostat will continue to remain in Emergency Heat mode
even after the power comes back on.
Emergency Heat mode will prevent the first stage of your heat pump system
from turning on, and use only the “W2” heat terminal (Auxiliary Heat) as the
primary heating source. This will not only prevent the heat pump from
wasting energy if outdoor temperatures are too low to support efficient
operation, but it could also prevent damage to the heat pump if outside
temperatures are below the manufacturer’s recommendations. As every heat
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pump has different operating characteristics, you should refer to your heat
pump literature to determine when to disable the heat pump and run in
Emergency Heat mode.
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.
MINIMUM RUN TIME: The thermostat has a default 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 manual change in set
temperature, please wait at least 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, 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 (HARDWARE 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: Move the Set Slide switch to the TEMP
PROG position. Programming will start with Monday. 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 the thermostat will advance to Tuesday,
with the MORN period start time flashing. Perform the same steps that you
used for setting the Monday periods, pressing the NEXT button to advance
through each flashing value. Return the Set Slide switch to the RUN position
when you are finished.
PROGRAM COPY FEATURE: The Copy feature allows you to copy all of the
program information from any one single day, to any other day of the week.
To copy heat programs, the thermostat must be in Heat mode, and to copy
cool programs, the thermostat must be in Cool mode. Emergency Heat (heat
pump configurations only) uses the Heat temperature program. With the Set
Slide switch in the TEMP PROG position, press the COPY/EMER button one
time. The words “COPY PROG” will briefly appear on the screen and flash
once, followed by “FRM” and “TO”. Next to FRM, a day of the week will be
flashing. Using the UP/DOWN buttons, select the day that you want to copy
from. Press the NEXT button one time. Your “copy from” day should be on
steady with the “copy to” day flashing. Use the UP and DOWN buttons to
select the day that you would like to copy to. A single short press of the
COPY/EMER button will perform the Copy, and the flashing “copy to” day will
have advanced to the next following day. You may continue to perform short
single presses of the COPY/EMER button to proceed with copying to the
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remaining days, one after the other (specific days may be skipped by
pressing the UP button to advance past them when they are flashing in the
“copy to” location). To exit the Copy feature, and return to the regular
temperature program screen, press and hold the NEXT button for more than
2 seconds. Return the Set Slide Switch to the RUN position when you are
finished.
ADVANCED FEATURES:
TEMPERATURE SWING AND OFFSET SETTING: A thermostat works by
turning your heating or cooling system on and off whenever the room
temperature varies from the desired set-point temperature. The amount of
this variation is called the swing. Generally your system should cycle on
about 3 to 6 times per hour. A smaller swing number makes the system
cycle more frequently, so the room temperature is more precise and
constant. A larger swing number will make the system remain on for a
longer duration each time and decreases the number of cycles per hour.
There is only one Swing setting, and this determines the cut-in and cut-out
points for both the first and second stages (if present), in both Heat mode
and Cool mode.
NOTE: The Swing and Offset settings need to be performed in a timely
manner, as the thermostat will timeout and automatically exit these
adjustment screens after approximately 10 seconds without a button press.
TO CHANGE THE SWING SETTING: Ensure that the System Mode switch is in
the OFF position and the Set Slide switch is in the RUN position. Press and
hold the HOLD button for at least 5 seconds. The words “SET” and “SWING”
will appear in the upper right corner of the screen, along with a single
flashing digit. Use the UP/DOWN buttons to change the number value
between 1 and 9 (0.25F to 2.25F, in 0.25F degree increments). Number 1 is
the default setting. Press the NEXT button to accept the swing setting and
proceed to the OFFSET setting.
TO CHANGE THE OFFSET: After the Swing value has been accepted, the
words “SET” and “OFFSET” will be shown on the screen, along with a
flashing digit. This setting is shown as a number of degrees, and is similar
in nature to the Swing however this only effects the operation of the second
(auxiliary) heating stage, if present. The setting range for Offset is from 0 to
9 degrees. When set to 0 degrees, the second heating stage is completely
disabled while in regular Heat mode (Emergency Heat mode will still function
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24
for heat pump configurations). 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. This setting can be used to conserve
energy in situations where the second heating stage is more costly to
operate when compared to the first stage.
71
70
69
68
67
66
Cut-In / Cut-Out
(1st Stage)
70˚F Set
Temperature
Swing
Setting=
#2 (+/- 0.5˚F)
Offset **
Setting=
4˚F degrees
(2nd Stage) **
Cut-In / Cut-Out
65
DEGREES (F)
** = Only applies if a second
heat stage is present
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TEMPERATURE CALIBRATION: The internal temperature sensor in this
thermostat is accurately calibrated at the factory, and in most cases
alterations to this setting should not be needed. The Temperature
Calibration feature allows you to manually offset the measured temperature
by as much as plus or minus 5°F (3°C) degrees from its original value. This
feature can be useful to match or synchronize this thermostat to another one
or more, if multiple thermostats are used in the same home.
NOTE: The Temperature Calibration setting need to be performed in a timely
manner, as the thermostat will timeout and automatically exit the adjustment
screen after approximately 10 seconds without a button press.
TO CHANGE THE TEMPERATURE CALIBRATION: Ensure that the System Mode
switch is in the OFF position and the Set Slide switch is in the RUN position.
Press and hold both the UP and DOWN buttons together for at least 5
seconds. The words “SET” and “CAL” will appear in the upper right corner
of the screen, along with a single flashing temperature digit. Use the
UP/DOWN buttons to change the number of degrees of adjustment. 0°
degrees is the default value, and means no correction is being applied.
Press the NEXT button to accept the setting.
SETBACK FEATURE: The setback feature is similar to both a Temperature
Override and a Temperature Hold, in that both are used to maintain a fixed
set temperature instead of following a programmed daily routine. A Setback
can be considered the same as a Temperature Override, which can last for a
longer duration that you can adjust from 1-12 hours, or 1-30 days. By
default, when a Setback is activated in Heat mode, the set temperature used
will be 5F (3C) degrees lower than the current set temp. For Cool mode, the
set temperature used will be 5F (3C) degrees higher than the current set
temp.
TO START A SETBACK: Ensure that the System Mode switch is in either the
Heat or Cool position, and that the Set Slider is in the RUN position. Press
and hold the SETBACK button for at least 2 seconds. The screen will change
and show the words “HOURS LEFT” and “OVERRIDE”, along with two digits.
Use the UP/DOWN buttons to set the duration for how long you would like to
maintain a fixed set temperature (from 1 to 12 hours). If you would like to
set the duration for longer than 12 hours, keep pressing the UP button. The
display will change from “HOURS LEFT” to “DAYS LEFT”, with an available
duration of 1 to 30 days. Once your desired Setback duration is shown on
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the screen, you can either wait for the screen to advance forward on its own,
or press the NEXT button (behind the door) one time to jump ahead rapidly.
Now use the UP/DOWN buttons to select your desired set temperature that
will be used for the Setback duration. Just like the previous step, you can
either wait for the screen to advance on its own, or press the NEXT button to
advance and return to the Normal Run screen.
TO CANCEL A SETBACK: While in the Normal Run screen, press and hold the
SETBACK button for at least 2 seconds. The word “OVERRIDE” will
disappear from the screen and the Setback will be cancelled. Moving the
System Mode switch or Set Slide switch, will also cancel a Setback.
SPECIAL PROGRAM FEATURE: The Special Program operates in the same
manner as the normal heating and cooling programs do, however the Special
Program activation is temporary, for a selected number of days (1-30). The
Special Program period times and temperatures can all be set to different
values to accommodate a wide variety of usage circumstances that may
occur, such as: being home for a couple days instead of at work, or a
vacation cut short. This feature eliminates the need to temporarily alter the
normal temperature program settings that continue to be used most of the
time. The heat Special Program is set in HEAT mode, and the cool Special
Program is set in COOL mode. The “number of days remaining” counter
decrements by one day, every 12:00 AM (Midnight).
NOTE: Just like the regular temperature programs, The Special Program has
4 separate periods for both Heat and Cool mode (MORN, DAY, EVE, and
NITE). If the thermostat is configured to use only 2 periods per day instead
of 4 (HARDWARE SETUP OPTIONS), the Special Program will only use the
DAY and NITE periods. The MORN and EVE periods will not be visible on the
screen.
TO SET THE SPECIAL PROGRAM VALUES: Move the Set Slide switch to the
SPEC PROG position. The screen will display “S-PROG”. 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.
Return the Set Slide switch to the RUN position when you are finished.
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NOTE: When activating the Special Program feature, button presses need to
be performed in a timely manner, as the thermostat will timeout and
automatically exit the setting screen after approximately 10 seconds without
a button press.
TO ACTIVATE THE SPECIAL PROGRAM: Press and hold the HOLD button for
at least 5 seconds. The words “S-PROG” and “DAYS LEFT” will appear on
the screen, along with a two digits. Use the UP/DOWN buttons to change the
numbers for the desired number of days that you would like the Special
Program to be used. Press the NEXT button to accept the setting and exit.
While the Special Program is in effect, the clock time will alternate with the
words “SPECIAL DAYS” and a two-digit value to indicate the amount of days
remaining.
TO CANCEL THE SPECIAL PROGRAM: Press and hold the HOLD button for at
least 5 seconds. The “SPECIAL DAYS” will stop alternating with the clock
time, and the thermostat will now be in Normal Run mode.
TEMPERATURE LIMIT STOPS: There are two independent set temperature
limit stops: a maximum heat set temperature, and a minimum cool set
temperature. These stops do not prevent a user from performing normal
actions like Temperature Override or Hold. 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. Each of these temperature stops is user adjustable in
one-degree increments, and these settings are protected by a selectable 2-
digit code to prevent unauthorized tampering. By default, this 2-digit code is
“00”, and the temperature stops can be used as-is with this code.
NOTE: The Temperature Limit Stop settings need to be performed in a timely
manner, as the thermostat will timeout and automatically exit the setting
screens after approximately 10 seconds without a button press.
TO SET THE HEAT LIMIT STOP: Place 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 from OFF to HEAT. The
words “CODE” and “T-STOP” will appear at the top of the screen, along with
two digits. Use the UP/DOWN buttons to select the proper code to access the
heat limit setting. Press the NEXT button to accept the setting. If the code
you tried was not correct, the thermostat will exit and return to the Normal
Run screen with no changes made. If the entered code is correct, the screen
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will add the word “SET” and display the current heat set temperature limit.
Use the UP/DOWN buttons to adjust the maximum heat set temperature
value. Press the NEXT button to accept the setting and return to the Normal
Run screen in heat mode.
TO SET THE COOL LIMIT STOP: Place the System Mode switch in the OFF
position, and the Set Slide switch in the RUN position. Press and hold the
DOWN button while sliding the System Mode switch from OFF to COOL. The
words “CODE” and “T-STOP” will appear at the top of the screen, along with
two digits. Use the UP/DOWN buttons to select the proper code to access the
cool limit setting. Press the NEXT button to accept the setting. If the code
you tried was not correct, the thermostat will exit and return to the Normal
Run screen with no changes made. If the entered code is correct, the screen
will add the word “SET” and display the current cool set temperature limit.
Use the UP/DOWN buttons to adjust the minimum cool set temperature
value. Press the NEXT button to accept the setting and return to the Normal
Run screen in cool mode.
TO CHANGE THE TEMPERATURE STOP LOCK CODE:
IF YOU FORGET YOUR TEMPERATURE STOP CODE:
KEYPAD LOCKOUT: You can lock the front panel buttons to prevent
unauthorized tampering of your thermostat settings.
NOTE: These keypad lock instructions need to be performed in a timely
manner, as the thermostat will timeout and automatically exit the keypad lock
screens and return to the Normal Run screen after approximately 10 seconds
without a button press.
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TO LOCK THE KEYPAD:
TO UNLOCK THE KEYPAD:
nd the wod“ENTER CO
IF YOU FORGET YOUR KEYPAD LOCK CODE:
AIR FILTER MONITOR: In most systems that use a blower fan and air ducts,
there is an air filter that is either replaceable or requires cleaning. The filter
is usually located in the air handler, where the blower fan is. This
thermostat feature assists you with keeping track of proper maintenance
and/or periodic replacement intervals for your system’s filter.
The Air Filter Monitor counts the duration of filter usage that has occurred,
since the last time the Filter Monitor has been reset. This feature is for
information purposes only, and does not affect the operation of your heating
or cooling equipment, or the thermostat. When the filter usage duration has
expired, the words “CHANGE FILTER” will appear at the top of the display
screen, alternating with the current DAY and PERIOD.
TO SET THE AIR FILTER DURATION: Move the Set Slide switch to the
“FILT/ENRGY” position. The words “FILTER LEFT” will be shown at the top
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of the display screen. Press either of the UP/DOWN buttons to select the
desired filter duration (in days) from the following choices: OFF, 30, 60, 90,
120, 180, or 365. If the filter duration value is set to “OFF”, then the Air
Filter Monitor will be completely disabled.
TO RESET THE FILTER USAGE COUNTER: Move the Set Slide switch to the
“FILT/ENRGY” position. The words “FILTER LEFT” will be shown at the top
of the screen. Press both the UP and DOWN buttons together, and the usage
counter will return to the beginning of the value that it originally started
counting from. Refer to the previous paragraph, should you wish to change
the starting value for the filter monitor. Return the Set Slide switch to the
RUN position when you are finished.
ENERGY USAGE MONITOR: Your thermostat contains a timer, which records
the amount of “on-time” for your heating and cooling systems. There are
three records that can be displayed for both Heat and Cool modes:
1) The amount of system run time so far for today.
2) The amount of system run time for yesterday.
3) The total cumulative system run time since the timer was reset.
TO VIEW THE HEAT USAGE TIMERS: Place the System Mode switch in the
OFF position, and the Set Slide switch in the FILT/ENRGY position. Press
and hold the NEXT button while sliding the System Mode switch from OFF to
HEAT. The words “TODAY USAGE” will appear at the top of the screen, along
with the word “HEAT” and the amount of heating system runtime (displayed
as “HH:MM”, for hours and minutes). Use the UP/DOWN buttons to cycle
between Today’s Usage, Yesterday’s Usage, and the Total Cumulative Usage.
NOTE: For the Total Cumulative Usage, the timer will record up to a
maximum of 99 hours and 59 minutes, then the display will change to
“HHHH” for hours only, without the colon in the center. Return the Set Slide
switch to the RUN position when you are finished.
TO RESET THE HEAT ENERGY USAGE: While viewing the Total Usage value,
press and hold the HOLD button for at least 4 seconds. The usage should
now be displayed as “00:00”. Return the Set Slide switch to the RUN
position when you are finished.
TO VIEW THE COOL USAGE TIMERS: Place the System Mode switch in the
OFF position, and the Set Slide switch in the FILT/ENRGY position. Press
and hold the NEXT button while sliding the System Mode switch from OFF to
COOL. The words “TODAY USAGE” will appear at the top of the screen,
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along with the word “COOL” and the amount of cooling system runtime
(displayed as “HH:MM”, for hours and minutes). Use the UP/DOWN buttons
to cycle between Today’s Usage, Yesterday’s Usage, and the Total Cumulative
Usage. NOTE: For the Total Cumulative Usage, the timer will record up to a
maximum of 99 hours and 59 minutes, then the display will change to
“HHHH” for hours only, without the colon in the center. Return the Set Slide
switch to the RUN position when you are finished.
TO RESET THE COOL ENERGY USAGE: While viewing the Total Usage value,
press and hold the HOLD button for at least 4 seconds. The usage should
now be displayed as “00:00”. Return the Set Slide switch to the RUN
position when you are finished.
HARDWARE RESET: The Hardware Reset button (labeled
“HW RST”) is a small round push button that is located
towards the right side if the circuit board, just below the
battery holder. Pressing this button will cause the LCD
display screen to become fully populated, the heating and
cooling load relays to cycle off, read the position of the
HW RST
Hardware Setup Option switches, and will perform an internal system check
of the thermostat components. If your thermostat appears to be acting in an
erratic manner, pressing the Hardware Reset button may remedy this
behavior. The temperature programs are not erased when a hardware reset
is performed, however the clock will have to be changed to match the
current day and time.
SOFTWARE RESET: The Software Reset button (labeled
“SW RST”) is a small round push button that is located
towards the left side if the circuit board, just below the
battery holder. A Software Reset is used to erase all
SW RST
heating and cooling temperature programs, and any user-
adjustable software values such as: Swing, Offset, and
Calibration, to their original factory default values. To perform a Software
Reset, press and hold the Software Reset button for at least 5 seconds. The
LCD display screen will become fully populated, than return to normal. The
thermostat will still retain the current day and time even after a Software
Reset has been performed.
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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, press and hold both the
NEXT and HOLD buttons, while also perform a single press of the Hardware
Reset button (the LCD display screen will become fully populated). Continue
to hold the NEXT and HOLD buttons until the LCD display screen returns to
normal. 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.
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 “-- -- LOW BATT -- --” appears at the top of the display screen).
The batteries are located on the back of the thermostat, at the top of the
circuit board. The front portion of the thermostat can be removed from the
back half by pulling straight outwards on the top and bottom of the
thermostat housing, at the large indentations that are present in the center
of the top and bottom edges.
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
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you troubleshooting guides, answers to the most common technical
questions, and also permits you to email your questions to our technical
support staff at your convenience.
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 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.
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34
SET
F
˚
F
˚
HEAT
:
5 36P
SETBACK
HOLD
Mt. Laurel, New Jersey 08054, USA
856-234-8803
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