Lux Products PSPU721T Thermostat User Manual

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3-YEAR WARRANTY  
INSTRUCTION MANUAL  
LUXPRO® PSPU721T  
2 Heating and 1 Cooling with Dual Fuel Switch  
LUX Products Corporation  
6000 Commerce Parkway, Suite-I • Mt. Laurel, NJ 08054  
(856) 234-7905 • FAX (856) 234-7825  
52077  
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LUXPRO® PSPU721T  
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OUTDOOR WIRELESS TEMPERATURE  
TRANSMITTER AND RECEIVER KIT  
®
LUXPRO Part No. WTR064  
Accurately Displays  
Current Outdoor Temperature  
®
on the LUXPRO Thermostat and  
Enables Dual Fuel and  
Automatic Humidity Capability  
Outdoor Wireless Temperature  
Transmitter and Receiver Kit Includes:  
Transmitter  
Antenna  
Receiver Module  
2 AA Batteries  
U.S. Patent: 6,902,117  
INSTRUCTION MANUAL  
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Introducing the LUXPRO® PSPU721T touch-screen thermostat with 2-stage heating, 1-stage  
cooling control and fossil fuel switch  
(Available only when combined with LUXPRO® Outdoor Wireless Transmitter and Receiver  
Kit. LUXPRO® Part No. WTR064)  
7 Day programmable with 4 events per day  
- including fan  
Large, easy to read dot matrix display  
True touch screen technology  
Automatic selection of cool or heat mode  
Programmable fan mode  
Customizable full and partial  
lock security  
Adjustable differential settings  
for multistage installations  
Energy watch calculates kWh consumption  
and real time HVAC cost  
Simple mode for non-programmable usage  
Programmable Vacation Mode  
Programmable filter monitor  
Programmable installer message  
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TABLE OF CONTENTS  
TABLE OF CONTENTS...................................................................................................................5  
GLOSSARY OF TERMS..................................................................................................................6  
SELECTING A LOCATION...............................................................................................................7  
MOUNTING THE THERMOSTAT TO THE WALL ...............................................................................8  
WIRING LEGEND...........................................................................................................................9  
WIRING DIAGRAMS ....................................................................................................................10  
HOME SCREEN...........................................................................................................................14  
CONTROL SCREEN.....................................................................................................................15  
THERMOSTAT OPERATION MODES .............................................................................................16  
TEMPERATURE CONTROL MODES..............................................................................................17  
FAN OPERATION MODES ............................................................................................................18  
GLOSSARY OF TERMS................................................................................................................19  
MENU SCREEN...........................................................................................................................20  
DATE AND TIME SETTINGS.........................................................................................................22  
PROGRAM SETTINGS .................................................................................................................23  
ENERGY WATCH.........................................................................................................................24  
SET SCREEN OPTIONS ...............................................................................................................25  
VACATION MODE........................................................................................................................26  
FILTER MONITOR........................................................................................................................27  
ADVANCED SETTINGS - FEATURES SETTINGS ............................................................................28  
ADVANCED SETTINGS - SYSTEM CONFIGURATION......................................................................30  
ADVANCED SETTINGS - DUAL FUEL SWITCH ..............................................................................31  
ADVANCED SETTINGS - DIFFERENTIAL SETTINGS ......................................................................32  
ADVANCED SETTINGS - TIMER FEATURE ....................................................................................33  
ADVANCED SETTINGS - HEAT PUMP ..........................................................................................34  
ADVANCED SETTINGS - CALIBRATION ........................................................................................36  
SIMPLE THERMOSTAT MODE .....................................................................................................38  
TROUBLESHOOTING...................................................................................................................39  
IMPORTANT NOTICE ..................................................................................................................40  
WARRANTY................................................................................................................................41  
INSTRUCTION MANUAL  
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GLOSSARY OF TERMS  
CYCLE RATE - Cycle rate is the frequency that heating or cooling equipment is turned on during a  
certain period of time. Cycle rate is often given in units of cycles per hour (CPH).  
DIFFERENTIAL - Differential is defined as the difference between the cut-in and cut-out points as  
measured at the thermostat under specified operating conditions. For example, if the thermostat  
turns the heating equipment on at 70 degrees F and turns the heating equipment off at 74 degrees  
F, then the differential is 4 degrees F.  
PROGRAMMABLE THERMOSTAT - A thermostat with the capability of automatically adjusting tem-  
perature set point to pre-selected settings at pre-selected times.  
SETBACK - The automatic alteration of the thermostat control point(s) by means other than man-  
ually changing the temperature set point.  
SET POINT - The desired temperature setting on an electromechanical or electronic thermostat.  
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SELECTING A LOCATION  
Install your LUXPRO® thermostat approximately 5 feet (1.5 meters) above the floor in an area  
with good air circulation.  
Avoid the following locations:  
Hot or cold air from ducts  
Radiant heat for appliances or sun such as a skylight  
Unheated or uncooled areas: for example an outside wall behind the thermostat.  
Ensure that there is no furniture directly below or beside the thermostat.  
INSTRUCTION MANUAL  
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MOUNTING THE THERMOSTAT TO THE WALL  
1. Make sure to turn off the power supply located at the electrical service panel.  
All heating and cooling units should be OFF.  
2. Separate the backplate from the thermostat by grasping the unit firmly at the bottom lip and  
pulling gently until the two piece are apart.  
3. Align the backplate to the wall.  
4. Mark the three locations for drilling the 3/16” holes required for the plastic screw anchors.  
5. Remove the backplate and drill the three 3/16” holes in these locations.  
6. Insert the plastic gyproc screws and ensure that they are snug in the wall.  
7. Securely mount the backplate to the wall with the 3 supplied screws.  
8. Make the appropriate wire connections based on the specifications of the  
household HVAC unit(s). Please refer to Wiring Table to determine the appropriate wire connec-  
tions.  
9. Place the thermostat on the backplate by firmly but gently from the top aligning the pins with  
the screw terminals.  
10. Turn on the electricity at the electrical service panel.  
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WIRING LEGEND  
TERMINAL  
EQUIPMENT  
STANDARD COLOR  
Yellow  
Y1  
First Heat Pump and AC  
G
Fan  
Green  
W2  
First Stage Furnace  
White  
OBW  
Reverse Valve - Second Stage Furnace  
Orange  
RH  
24v  
Red  
Y2  
Not Used  
Common  
Not Used  
Not Used  
24v  
Unknown  
Blue  
C
H
Unknown  
Unknown  
Unknown  
DH  
RC  
11 and 12  
Not Used  
NOTE: The above colors are standard in HVAC industry. The wiring should be confirmed  
before installation  
INSTRUCTION MANUAL  
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WIRING DIAGRAMS  
1 AIR CONDITIONER  
I2 I1 RC DH  
H
C
Y2 RH OBW W2 G Y1  
24V  
FAN  
AC  
COMMON  
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WIRING DIAGRAMS  
1 AIR CONDITIONER AND 1 STAGE HEAT  
I2 I1 RC DH  
H
C
Y2 RH OBW W2 G Y1  
24V  
HEAT  
FAN  
AC  
COMMON  
1 AIR CONDITIONER AND 2 STAGE HEAT  
I2 I1 RC DH H  
C
Y2 RH OBW W2 G Y1  
24V  
HEAT 2  
HEAT 1  
FAN  
COMMON  
AC  
INSTRUCTION MANUAL  
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WIRING DIAGRAMS  
1 HEAT PUMP  
I2 I1 RC DH  
H
C
Y2 RH OBW W2 G Y1  
24V  
REVERSE VALVES  
FAN  
HP  
COMMON  
1 HEAT PUMP AND 1 STAGE HEAT  
I2 I1 RC DH H  
C
Y2 RH OBW W2 G Y1  
24V  
REVERSE VALVES  
HEAT  
FAN  
HP  
COMMON  
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WIRING DIAGRAMS  
1 TRANSFORMER  
I2 I1 RC DH  
H
C
Y2 RH OBW W2 G Y1  
HEAT  
TRANSFORMER  
2 TRANSFORMERS  
I2 I1 RC DH  
H
C
Y2 RH OBW W2 G Y1  
CUT  
COOL  
TRANSFORMER  
HEAT  
TRANSFORMER  
INSTRUCTION MANUAL  
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HOME SCREEN  
>>  
>>  
To return to the HOME SCREEN, simply touch the  
icon at any time!  
The HOME SCREEN displays the following information:  
Current Room  
Temperature  
Current Outdoor  
Temperature  
Fan Operation Indicator  
Vacation Mode Indicator  
Security Indicator  
Heat setpoint  
Current Thermostat Operation  
Mode  
Current Temperature  
Control Mode  
Cool setpoint  
Date  
Current Fan  
Operation Mode  
Time  
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CONTROL SCREEN  
>>  
>>  
To access the CONTROL SCREEN, simply touch the HOME SCREEN Screen… anywhere!  
From the CONTROL SCREEN, you can:  
Change the Temperature Setpoint(s) using - and + buttons.  
In AUTO MODE toggle the Heat/Cool button (Heat or Cool will flash  
once selected), then raise or lower setpoints as desired.  
Select the Thermostat Operation Mode by toggling thermostat operation  
mode button.  
Select the Temperature Control Mode by toggling the  
temperature control mode button.  
Select the Fan Operation Mode by toggling the fan operation  
mode button.  
Access MENU SCREEN to enter into all thermostat features and settings.  
Displays Installer Message to review important information.  
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Available only in combination with WIRELESS OUTDOOR TEMPERATURE TRANSMITTER AND RECEIVER KIT (WTR064)  
INSTRUCTION MANUAL  
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THERMOSTAT OPERATION MODES  
>>LUXPRO® thermostat can operate in PROGRAM MODE or can HOLD a fixed temperature.  
RUN PROGRAM: the thermostat initiates the 7-day Programmable Temperature  
Control Program with 4 independent events per day. To set up a custom tem-  
perature control program with customizable Temperature Setpoint and Fan  
operation mode, refer to Section PROGRAM SETTINGS (page 23).  
HOLD TEMPERATURE: the thermostat regulates the room temperature  
as determined by the selected Temperature Setpoint.  
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TEMPERATURE CONTROL MODES  
>>Based on your HVAC equipment LUXPRO® thermostat can operate in the following temper-  
ature control modes - AUTO or HEAT or EMERGENCY HEAT or COOL or OFF  
AUTO - the thermostat keeps the room temperature between the selected  
HEAT and COOL setpoints by using both the cooling and heating HVAC units.  
HEAT - the thermostat only turns on the heating units to regulate room  
temperature.  
EMERGENCY HEAT - the thermostat enables the emergency heat (if  
required).  
COOL - the thermostat only turns on the air conditioning to regulate room  
temperature.  
OFF - the thermostat will not control temperature. the thermostat will con-  
tinue to display the current room temperature and outdoor temperature.  
INSTRUCTION MANUAL  
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FAN OPERATION MODES  
>>LUXPRO® thermostat can operate the fan in one of the following three modes:  
FAN AUTO: The fan runs only when there is a demand for heating or cool-  
ing.  
FAN ON: The fan runs continuously  
FAN INTERMITTENT: The fan runs 10 minutes per 1/2 hour providing a  
convenient way to improve air quality and save energy.  
When the fan is running, the animated fan icon will appear on the  
HOME SCREEN.  
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INSTRUCTION MANUAL  
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MENU SCREEN  
>>  
>>  
To access the MENU SCREEN, simply touch MENU from the CONTROL SCREEN.  
From the MENU page, you can:  
Access DATE AND TIME SETTINGS to enter the accurate date and time  
Access PROGRAM SETTINGS to pre-program temperature changes  
during each day of the week.  
Access ENERGY WATCH to display kWh consumption and the dollar cost  
of operating the HVAC System  
CLEAN SCREEN places the touch screen in a sleep mode for 15 seconds  
which allows you to wipe the screen with a dampened cloth.  
Access the SET SCREEN menu to change screen properties.  
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MENU SCREEN  
Access VACATION SETTINGS to activate the VACATION MODE  
Access FILTER MONITOR to review days of "fan run time."  
Access ADVANCED SETTINGS to configure the thermostat.To access the  
ADVANCED SETTINGS, hold the ADVANCED SETTINGS button for 5 sec-  
onds. the thermostat will continuously beep for 5 seconds to indicate that  
you are in the process of entering this feature.  
!
CAUTION Altering the system properties in the ADVANCED SETTINGS may affect the per-  
formance of the HVAC system and should be performed only by a qualified installer.  
INSTRUCTION MANUAL  
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DATE AND TIME SETTINGS  
Select the 12 OR 24 HOUR CLOCK display by  
pushing the corresponding button.  
Set the TIME by togggling hour, minute and  
AM/PM buttons.  
Set the DATE by toggling Month, Day and Year  
buttons.  
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PROGRAM SETTINGS  
PROGRAM SETTINGS feature allows you to easily and quickly program  
daily temperature changes to fit your lifestyle and reduce energy con-  
sumption. You can customize the program for each day of the week with  
4 independent temperature and fan operation settings per day. To setup  
your program:  
Select the DAY OF THE WEEK  
Select the EVENT NUMBER by toggling the  
Event Number button  
Choose desired FAN OPERATION MODE by  
fan operation mode button.  
Enter the event START TIME with Hour/Minute  
and AM/PM buttons  
Choose desired TEMPERATURE SETPOINT  
with - and + buttons  
Select the next event and repeat the steps  
described above. Once finished, select the next  
day of the week that you would like to program. the  
thermostat will prompt you to copy the settings.  
Repeat steps to program other days of the week.  
INSTRUCTION MANUAL  
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ENERGY WATCH  
ENERGY WATCH feature provides a report on the energy consumption and  
the dollar cost of operating your HVAC system (for up to the last 255 days).  
Once the cost of the kWH per compressor, furnace and fan have been entered into the ENERGY  
WATCH Settings (see page 28) Energy Watch will display the consumption as well as the real time  
dollar cost of the HVAC system.  
Otherwise, ENERGY WATCH will display only the total time the Compressor  
and the Furnace have been operating.  
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SET SCREEN OPTIONS  
BACKLIGHT: Select between automatic and permanent backlight for the screen.  
AUTO: The screen back-light will come on only when you touch the screen.  
ON: Screen will constantly be back-lit.  
REVERSE: Select the positive or negative screen display.  
ON: Negative Display (Dark Background)  
OFF: Positive Display (Light Background)  
NIGHT REVERSE: changes the touch screen background at night for improved display under  
low-lighting conditions. Select between:  
ON: the screen automatically reverses the background at 9PM and returns  
to the normal display at 6:00AM .  
OFF: screen background is determined by REVERSE function.  
CONTRAST: Toggle the screen contrast settings button (1-10) to select the screen contrast that  
suits best your thermostat surroundings. LUXPRO® recommends the setting of 7.  
INSTRUCTION MANUAL  
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VACATION MODE  
>>VACATION SETTINGS allows you to set the temperature to a fixed setpoint during the time you  
are on vacation, providing energy savings without compromising comfort upon your return.  
IMPORTANT: HEAT or COOL must be selected from the CONTROL SCREEN before entering the  
Vacation Settings screen.  
To begin select Vacation Mode ON:  
Select the START Date  
Select the END Date  
Adjust the HEAT or COOL temperature setpoint: the Vacation mode begins  
at 10 PM on the day of your departure and ends at Midnight on the day  
of your arrival.  
When the Vacation mode is active the suitcase icon appears on the HOME  
SCREEN. Upon your return, the message VACATION MODE ENDED will be  
displayed on the screen. Simply touch the screen, and your LUXPRO®  
thermostat will automatically revert to the Program Settings if you are in  
RUN PROGRAM or to HOLD TEMPERATURE operation mode.  
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FILTER MONITOR  
FILTER MONITOR: Displays filter usage in days  
RESET: Resets filter timer (You should reset FILTER MONITOR after chang-  
ing the air filter.  
When activated the FILTER MONITOR icon appears on your HOME SCREEN  
- this feature must be activated in ADVANCED SETTINGS.  
INSTRUCTION MANUAL  
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ADVANCED SETTINGS - FEATURES SETTINGS  
DAYLIGHT TIME: Choose Daylight Time ON or OFF dependent on your Time Zone.  
FILTER: Enter the air filter "fan run time" infor-  
mation here. The Filter Monitor feature uses this  
information to inform you when to change your  
air filter by displaying CHANGE FILTER icon on the  
HOME SCREEN.  
ENERGY WATCH: Enter the HVAC system con-  
sumption parameters (rounded off to kW) as well  
as your electrical energy cost (¢/kW) and the  
ENERGY WATCH feature will display a real time  
totals of electrical energy consumption and cost. To  
review touch the ENERGY WATCH button on the  
MENU SCREEN.  
* EXAMPLE: Fan 1kW, Heat Pump 1kW/ton, Furnace 5-30 kW, 7-9¢/kW  
ENERGY WATCH feature will run consecutively for 255 days. If you do not enter your information what  
will appear on the display is the total time the Compressor and the Furnace have been operating.  
Select temperature display in either CELSIUS or FAHRENHEIT degrees  
by toggling the °C / °F button to either °C or °F.  
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ADVANCED SETTINGS - FEATURES SETTINGS  
SECURITY: The security settings allow you to  
protect your LUXPRO® thermostat from unautho-  
rized use.  
Turn Security ON or OFF. You will be prompted to enter the PIN. The Default  
PIN 1111.  
To CHANGE PIN, enter your new PIN and then, when prompted, re-enter  
your new PIN.  
Choose a security mode by toggling SECURITY MODE button:  
FULL LOCK does not allow any changes unless the user enters the PIN.  
PARTIAL LOCK allows you to change only the temperature setpoint  
without entering a PIN.  
Enter the INSTALLER MESSAGE: (up to 42 char-  
acters) to appear at programmable intervals. Type  
the message using the keyboard, and push OK button to confirm. You will  
be prompted to enter the number of months after which you would like the  
message to appear.  
INSTRUCTION MANUAL  
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ADVANCED SETTINGS - SYSTEM CONFIGURATION  
!
IMPORTANT: By inadvertently modifying system configuration settings, you may seriously  
degrade HVAC system performance.  
>>Choose system heating and cooling equipment - remember all you need to do is toggle the  
appropriate button until the correct setting appears.  
Choose HEAT PUMP or 2 STAGE HEAT PUMP or AIR CONDITIONING or NO COMPRESSOR -  
please review the wiring table and diagram for wiring instructions.  
Choose FURNACE OFF (No Furnace) or ELECTRIC FURNACE or EMERGENCY ELECTRICAL  
FURNACE (additional electric furnace which will come on in emergency mode in conjunction  
with electric furnace) or GAS FURNACE or OIL FURNACE or 2 STAGE GAS FURNACE; please  
review the wiring table and diagram for wiring instructions.  
CYCLE RATE: Set Maximum compressor cycles per hour. We recommend that the factory default  
be maintained for optimal performance..  
AUTO CHANGE: Set the minimum difference between Auto Mode, Heat and Cool temperature set-  
points. We recommend that the factory default be maintained for optimal performance.  
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ADVANCED SETTINGS - DUAL FUEL SWITCH  
!
IMPORTANT: This feature can only be activated when used with the LUXPRO® Outdoor  
Wireless Temperature Transmitter and Receiver. Please install the LUXPRO® Outdoor  
Wireless Temperature Transmitter and Receiver before activating this feature.  
Increasing energy efficiency and reducing costs can be achieved by using the dual fuel  
switch. Your heat pump can generally provide heat and comfort without assistance to an  
outside temperature of just a few degrees below freezing. This temperature is called the  
heat pump balance point. When the outside temperature is above the balance point, the heat  
pump alone is sufficient for heating.  
Once the outdoor temperature drops to the balance point the heat pump must be assisted by your  
alternate energy source. When the outdoor temperature drops below the systems normal crossover  
temperature (-12°C or -15°C), your heat pump will stop operating and the alternate energy  
source will take over.  
HP Cut ON or OFF  
Cut Temperature:  
+/-Temperature in Celsius (-5°C to 25°C)  
+/- Temperature in Fahrenheit (13°F to 41°F)  
INSTRUCTION MANUAL  
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ADVANCED SETTINGS - DIFFERENTIAL SETTINGS  
>>LUXPRO® PSPU721T allows you to control up to 2 Stages of Heating and 1 Stage of Cooling,  
dependent on the type of system you have configured.  
1ST STAGE DIFFERENTIAL: Set temperature difference between temperature set point and  
actual temperature reading before 1st stage heating or cooling is initiated.  
2ND STAGE DIFFERENTIAL: Set temperature difference between 1st stage initiation and 2nd stage  
heating or cooling initiation.  
OB ENERGIZED: Reverses the Heat Pump OB Valve contact to HEAT or COOL (manufacturer  
dependent).  
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ADVANCED SETTINGS - TIMER FEATURE  
Specify the number of minutes for which Stage 1 will function until Stage 2 is activated to help  
raise (or cool) temperature (if the temperature set point is not reached). This unique function  
avoids excess compressor wear in the case where the necessary temperature set point is not met  
through setting of the Staging Differential. Set to “00” to disable.  
INSTRUCTION MANUAL  
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ADVANCED SETTINGS - HEAT PUMP  
HP ON when Furnace On: Heat Pump and Furnace can operate together when 2nd stage fur-  
nace is required. HP “OFF” when Furnace On: turns off the Heat Pump when the furnace is On  
(required on some gas or oil furnaces).  
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INSTRUCTION MANUAL  
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ADVANCED SETTINGS - CALIBRATION  
>>Calibration of Temperature  
Your LUXPRO® thermostat is rated for a temperature accuracy of ±± ±(.015°  
If you have determined due to drafts, sunlight or other environmental factors that your thermostat  
requires calibration, follow this easy guide. 5ommon cause of offset are lack of air circulation,  
drafts or skylights in the direct vicinity of your LUXPRO® thermostat.  
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ADVANCED SETTINGS - CALIBRATION  
>>Temperature Calibration Table  
Determine the temperature difference using an accurate thermometer and use the following table  
to calibrate your thermostat. The thermostat temperature reading can be calibrated by ±±19°  ±1.995°.  
Calibration Number  
±±.±  
°C Change  
±±.±9°  
±±9°  
°F Change  
±±.±95  
±±.995  
±±.±95  
±±.995  
±1.±95  
±1.995  
±1.±95  
±1.995  
±1.±95  
±1.995  
±9.±95  
±9.995  
±1.±95  
±1.995  
±1.±95  
±1.995  
±1.±95  
±1.995  
±1.±95  
±1.995  
±±.9  
±±.±  
±19°  
±±.9  
±19°  
±1.±  
±19°  
±1.9  
±99°  
±1.±  
±19°  
±1.9  
±19°  
±1.±  
±19°  
±1.9  
±19°  
±9.±  
±±±9°  
±±±9°  
±±19°  
±±19°  
±±19°  
±±99°  
±±19°  
±±19°  
±±19°  
±±19°  
±9.9  
±1.±  
±1.9  
±1.±  
±1.9  
±1.±  
±1.9  
±1.±  
±1.9  
INSTRU5TION MANUAL  
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SIMPLE THERMOSTAT MODE  
>> LUXPRO® thermostat can also function as a virtual non-programmable thermostat after it has  
been switched to a “SIMPLE MODE”.  
>> To enable “SIMPLE MODE”, press the reset button (take off the thermostat faceplate and press  
the reset button located in the bottom right-hand corner). The message “Touch for simple ther-  
mostat” will appear. Touch the screen immediately, and your LUXPRO® thermostat becomes a  
simplified non-programmable thermostat.  
>> “SIMPLE MODE” has the following temperature control modes:  
>> “SIMPLE MODE” has the following fan operation modes:  
Please note that when entering "Simple Mode" all configurations and settings are stored  
permenantly.  
>>To revert back to the Programmable LUXPRO® thermostat, simply press the reset button and  
touch the screen when the message “Touch for Programmable Thermostat” appears.  
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TROUBLESHOOTING  
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Touch screen buttons do not function properly. Remove cover, press the reset button located  
in the bottom left corner then accurately touch 3 target centers on the screen when prompted.  
Air conditioning turns on in HEAT mode and heating turns on in COOL mode. Reverse the  
OB valve (see “Advanced Settings” Page 36).  
PARTIAL LOCK and FULL LOCK do not function. You must not touch the screen for 1 minute  
for LUXPRO® thermostat to automatically lock.  
Thermostat appears normal until the screen becomes blank when the compressor or  
heating system turns on. You need to connect the “C” wire. 4 wire system will not function  
unless the heat and compressor contactors can supply enough current to power the thermo-  
stat with only 4 wires, if you cannot hook up the “C” wire another possible solution is to connect  
one 250 ohm 10 watt resistor in the HVAC room, for cooling problems between C and W or in the  
case of heating problem between C and Y1.  
INSTRUCTION MANUAL  
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IMPORTANT NOTICE  
>> WHEN USING THIS THERMOSTAT WITH A GAS FURNACE A COMMON WIRE (C) MUST BE  
CONNECTED.  
When working without a common wire:  
>> A confirm in HEAT MODE the cooling does not switch on or B confirm in COOL MODE the heat  
does not switch on.  
>> If test A or B fail or the thermostat shuts down in either HEAT or COOL MODE then it is neces-  
sary to connect a common wire, (C), alternatively it may be possible to solve this issue by sim-  
ply connecting the 250 ohm 10 watt resistor between C and W (in the case of a cooling problem  
- see B) or between C and Y1 (in the case of a heating problem - see A) at the HVAC equipment.  
>> When working without a common wire, A confirm that when there is a call for heat, cooling  
does not also activate, and when there is a call for cool, heating does not also activate.  
>> If using the configuration of Heat Pump and Furnace with no Common Wire confirm that when  
Heat Pump and Furnace are working together (both stages are operating at the same time) that  
the display does not go blank, if so you must use a Common Wire.  
>> This thermostat is equipped to run with two separated power transformers if required RC and  
RH. Terminals RC and RH are internally connected together however you should wish to use two  
transformers simply cut with a blade the copper trace on the printed circuit board located  
between the C and Y2 screw terminals.  
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LUXPRO® PSPU721T  
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WARRANTY  
HARDWARE  
LUX Products Corporation warrants the original end user (“Customer”) that new LUXPRO® branded products  
will be free from defects in workmanship and materials, under normal use, for three (3) years from the  
original purchase date.  
SOFTWARE  
LUX Products Corporation warrants to Customer that the LUXPRO® thermostat software will perform in sub-  
stantial conformance to its program specifications for a period of three (3) years from the date of the orig-  
inal purchase.  
EXCLUSIONS  
This warranty excludes (1) physical damage to the surface of the product, including cracks or scratches  
on the touch-screen or outside casing; (2) damage caused by misuse, neglect, improper installation, unau-  
thorized attempts to open, repair, or modify the product, or any other cause beyond the range of intended  
use; (3) damage caused by accident, fire, power changes, other hazard, or Acts of God; or (4) use of the prod-  
uct with any device if such device causes the problem.  
EXCLUSIVE REMEDIES  
Should a covered defect occur during the warranty period and Customer notifies LUX Products Corporation,  
Customer’s sole and exclusive remedy will be, at LUX Products Corporation’s sole option and expense, to repair  
or replace the product. Replacement products or parts may be new or reconditioned or a comparable ver-  
sion of the defective item. LUX Products Corporation warrants any replaced product or part for a period of  
ninety (90) days from shipment, or through the end of the original warranty, whichever is longer.  
OBTAINING WARRANTY SERVICE  
Customer must contact and return product to a local LUX Products Corporation product dealer or installer  
within the applicable warranty period to obtain warranty service. Dated proof of original purchase will be  
required. LUX Products Corporation will not be responsible for Customer’s memory data contained in, stored  
on, or integrated with any products returned to LUX Products Corporation for repair, whether under warran-  
ty or not.  
WARRANTY EXCLUSIVE  
THE FORGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES,  
EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF  
MERCHANTABILITY, FITNESS FOR A PARTICULAR  
PURPOSE, CORRESPONDENCE WITH DESCRIPTION, AND NON-INFRINGEMENT, ALL OF WHICH ARE EXPRESS-  
LUX Products Corporation  
LY DISCLAIMED BY  
AND ITS SUPPLIERS.  
DISCLAIMER  
NEITHER LUX Products Corporation NOR ITS SUPPLIERS SHALL BE LIABLE FOR INCIDENTAL, CONSEQUEN-  
TIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FINANCIAL LOSS ARISING OUT OF OR  
IN CONNECTION WITH THE SALE OR USE OF THIS PRODUCT, WHETHER BASED IN CONTRACT, TORT (INCLUD-  
ING NEGLIGENCE) OR ANY OTHER THEORY, EVEN IF LUX Products Corporation HAS BEEN ADVISED OF THE  
POSSIBILITY OF SUCH DAMAGES. LUX Products Corporation’S ENTIRE LIABILITY SHALL BE LIMITED TO  
REPLACEMENT OR REPAIR OF THE PRODUCT.  
INSTRUCTION MANUAL  
41  
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42  
LUXPRO® PSPU721T  
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INSTRUCTION MANUAL  
43  
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TECHNICAL ASSISTANCE  
If you have any problems installing or using this thermostat, please reread the instructions careful-  
ly or visit our online technical support at www.luxproproducts.com.If you require assistance,  
please call our Technical Assistance number between 8:00 a.m. and 4:30 p.m. Eastern Standard Time,  
Monday through Friday. The number is (856) 234-8803.  
DIMENSIONS  
Case:  
Screen:  
6.5” x 4.6” x 1.25”  
3.625” x 2.125”  
ELECTRICAL RATING  
24 volt AC/DC  
Class 2 maximum 2 amps  
Temperature Accuracy 11F ( 0.51C)  
Humidity Accuracy 44RH  
PATENTS  
7,185,825; 7,156,318; 7,145,110; 7,050,026; 7,028,912; 6,902,117; 6,786,421; Other Patents Pending  
FCC STATEMENT THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUB-  
JECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTER-  
FERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTER-  
FERENCE THAT MAY CAUSE UNDESIRED OPERATION.  
LUX Products Corporation  
6000 Commerce Parkway, Suite-I • Mt. Laurel, NJ 08054  
(856) 234-7905 • FAX (856) 234-7825  

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