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
IMPORTANT!
This thermostat can be used with most 24 volts: gas, oil, Millivolt, electric heating and cooling systems, including heat pumps with an aux/emerg heat element. It cannot be used with: 120/240-volt heating elements (without a transformer), or on heat pumps that have two compressor stages (Y2). Ask your dealer for other LUXPRO thermostats to control those systems
REMOVAL OF OLD THERMOSTAT
INSTALLATION OF NEW THERMOSTAT
Use the wiring diagrams shown on the back of this installation sheet to find the closest match to your particular heating and/or cooling system. Please read ALL of the Wiring Diagram Notes that are shown above the connection diagrams, to avoid causing damage to your system or the new thermostat.
COMPLETE THE INSTALL
GAS / ELEC CIRCUIT BOARD OPTION (“G” TERMINAL FAN OPERATION):
This setting is a plastic shorting cap called a jumper. This jumper must remain installed, and set to either GAS or ELECTRIC for your system to work properly. This setting changes how your system’s blower fan (if applicable) is controlled while the thermostat is in HEAT or EMERG HEAT mode when the Fan switch in the AUTO position. This setting does not affect the fan operation while in COOL mode
When set to “GAS”, the blower fan is controlled solely by the heating system itself. Systems that would typically use the “GAS” setting would be natural gas, propane, or oil furnaces, and boilers.
NOTE: If your blower fan does not operate properly after installation, move the Gas / Electric option to the “Electric” setting. When set to “ELEC”, the blower fan is controlled directly by the thermostat. This setting is required for heating systems that do not control their own fan, such as HEAT PUMPS, and units that only have an electric-resistive heating element as the heat source.
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 in AUTO, the blower fan (if present in your system) will cycle on and off only while heating or cooling. In the ON position, the blower fan will run constantly at all times with or without a demand for heating or cooling.
MULTI-FUNCTION, SET SLIDE SWITCH: This provides easy access to common settings, and should always remain in RUN unless a specific item is being adjusted. NOTE: when the thermostat is set to In “Manual” non-programmable mode, all 4 switch positions will act like RUN, except the “AIR FILTER” position.
UP / DOWN BUTTONS: The UP and DOWN buttons are used to control the set temperature, or adjust any other on-screen items. Typically, an item that is flashing can currently be adjusted.
HOLD BUTTON: This button activates and deactivates the manual Temperature Hold feature, which maintains a fixed set temperature indefinitely without following a program routine.
EMER BUTTON: For Heat Pump systems: this button activates Emergency Heat mode and prevents the outdoor unit from running. For conventional (non-Heat Pump) systems, this button will have no effect in Normal RUN mode.
NEXT BUTTON: This is used when setting items such as software options, and temperature programs. When items on the screen are flashing during adjustments. Pressing the NEXT button will cycle through which item is flashing.
INSTALL BATTERIES INTO THERMOSTAT: Install two brand new Energizer® or DURACELL® “AA” size alkaline (only) batteries, into the thermostat’s battery compartment. Ensure the batteries are installed in the proper direction. Setup options for how the thermostat will function, along with choosing your particular system type, are performed using a menu on the display screen.
TO ACCESS THE SETUP MENU: Move the System Mode switch into the OFF position, and then hold down the EMER button for approximately 5 seconds until the screen changes. The menu will always start with item #1, and is advanced to each following item by a single press of the NEXT button. The options for each item are changed using the UP or DOWN buttons.
ITEM #01 (CLK = CLOCK FORMAT): [12Hr, default] This displays the clock times using standard AM and PM values. [24Hr] This displays the clock times using the military-time format (example 22:00 hours, without using AM or PM).
ITEM #02 (TMP = TEMPERATURE SCALE): [F, default] Shows all temperature values in Fahrenheit. [C] Shows all temperature values Celsius.
ITEM #03 (THERMOSTAT TYPE): [PROG, default] Use this setting for following a daily program routine. [MAN] This setting omits the program routinely and operates as a manual style non-programmable thermostat. This is very basic and only shows the room temperature and set temperature on the screen, with no clock.
ITEM #04 (PERD = PERIOD QUANTITY): [4P, default] Thermostat uses four periods per day (called MORN, DAY, EVE, and NITE). [2P] The thermostat uses two periods per day (called DAY and NITE).
ITEM #05 (RCV = EARLY RECOVERY): [OFF, default] Program Set Temperature values start to occur at exactly the period start times. [ON] Early Recovery affects how the transition occurs when changing from the NITE to the MORN period, and when changing from the DAY to the EVE period. The thermostat calculates how long it takes for your home to recover from a setback on a daily basis, and turns on ahead of time in order to reach the target set point of the next upcoming program period by the period’s start time. While in recovery, the word “RECOV.” will be shown on the display screen.
ITEM #06 (SYSTEM MODE): [FURN, default] This is for the majority of heating systems that are not Heat Pumps, such as a gas furnace or hot water boiler. [HP] Use this setting if you have a Heat Pump system, which uses the outdoor unit as the primary heat source and may also contain an electric heating element as a backup heat source. When set to “HP”, ensure that you have also set the Gas/Electric circuit board option to “ELEC”, as described in the “COMPLETE THE INSTALL” section.
ITEM #07 (DLAY = DELAY TIME): [5, default] Thermostat waits 5 minutes before turning the system back on after it was last run. This internal delay prevents rapid cycling and provides equipment protection. The 5 minute setting is fine for most applications. [2] Same operation as above but reduced to 2 minutes between state changes.
ITEM #08 (TEMPERATURE SWING): 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. Use the UP/DOWN buttons to change the number value between 1 and 9. 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.
ITEM #09 (STAGE-2 OFFSET): [2, default] This setting is adjusted as a number from 0 to 9. When set to 0 (ZERO), the second heating stage is completely disabled while in regular Heat mode (however Emergency Heat mode will still function 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.
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. The basic operation of your heating or cooling system can be obtained with the Set Slide Switch in the RUN position and by 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. Alternatively, you can use the HOLD button to maintain a fixed Set of Temperature
DOWNLOAD THE FULL INSTRUCTION MANUAL FROM OUR WEBSITE
This sheet contains basic installation steps and setup instructions. There are additional topics covered in greater detail, such as adjustable set temperature limits, keypad lockout, and the air filter monitor, in the full version of the instruction manual for this thermostat product. The full PDF version of this manual can be downloaded at http://www.luxproproducts.com. Click on SUPPORT, then INSTRUCTION MANUALS (LUXPRO “P521Uc”).
By default, this thermostat has 4 separate program periods for both Heat and Cool modes, they are: MORN, DAY, EVE, and NITE. Each period ends at the start time of the next upcoming period. The Heat temperature programs are set while the mode switch is in the HEAT position, and the Cool temperature programs are set while the mode switch is in the COOL.
NOTE: If the thermostat is configured to use only 2 periods per day (instead of the factory default of 4 periods per day), the thermostat will only use the DAY and NITE period designations. The MORN and EVE periods will not be used or visible on the screen. TO SET A TEMPERATURE PROGRAM: Choose either HEAT or COOL mode. Move the Set Slide switch to the TEMP PROG position. Programming will start with all 5 weekdays, Monday through Friday (all grouped together). Use the UP/DOWN buttons to adjust the start time for the MORN period, and then press the NEXT button to advance. Use the UP/DOWN buttons to adjust the set temperature for the MORN period, and then press the NEXT button to advance. Now adjust the start time and set the temperature for the DAY period, pressing the NEXT button after each item to advance. Continue with these same steps to adjust the start times and set temperatures for the EVE and NITE program periods. When the NITE period is finished for the weekdays, the thermostat will advance forward into the Weekend program, with the MORN period start time flashing. You will now be setting the program periods for both Saturday and Sunday (grouped together). Perform the same steps that you used above for setting the Weekday periods, pressing the NEXT button to advance through each flashing value. Return the Set Slide switch back to the RUN position when you are finished.
Emergency Heat mode is only present if the thermostat is setup for a Heat Pump configuration (SETUP MENU ITEM #06 set to “HP”). With the System Mode switch in the HEAT position and the Set Slide switch in the RUN position, one single press of the EMER button will activate Emergency Heat mode. A single press again will deactivate Emergency Heat mode, and return back to regular Heat mode. While in Emergency Heat mode, the word “EMER” will be present in the middle portion of the display screen. If a mains power loss occurs while in Emergency Heat mode, the thermostat will continue to remain in Emergency Heat mode even after the mains power comes back on. Emergency Heat mode will prevent the first stage (outdoor unit) of your heat pump system from turning on, and uses only the “W2” wire terminal (Auxiliary Heat) as the primary heating source. This not only prevents the heat pump from wasting energy when outdoor temperatures are too low to provide efficient operation, but it can also prevent permanent mechanical damage to the heat pump unit itself if outside temperatures are below the manufacturer’s recommendations for running the outdoor unit. As every heat pump has different operating characteristics, you should always refer to your particular heat pump’s literature to determine when the manufacturer recommends changing over to Emergency Heat mode. In general for most heat pump systems, use Emergency Heat mode whenever the outside temperature is less than 32F degrees.
If you have any problems installing or using this thermostat, please carefully and thoroughly review the instruction manual. If you still require assistance, please contact our Technical Assistance department at 856-234-8803 during regular business hours between 8:00 AM and 4:30 PM Eastern Time, Monday through Friday. You can also receive technical assistance online anytime day or night at http://www.luxproproducts.com. Our website offers you troubleshooting guides and answers to the most common technical questions, and also permits you to email your questions to our technical support staff at your convenience.
Download Manual
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