Product Overview
The Lux Pro P721UT-010 is a deluxe, touch screen thermostat designed for customizable temperature control. It operates as an all-in-one programmable or non-programmable unit, offering broad compatibility with various HVAC systems. Its dual power capability ensures consistent and reliable performance.
Figure 1: Front view of the Lux Pro P721UT-010 Thermostat, displaying current time, room temperature, and set temperature.
Key Features
Figure 2: A detailed list of the thermostat's features, including programming options, display type, and advanced settings.
- Easy Installation: Designed for quick setup.
- Programmable Options: Supports 7-Day, 5/2-Day, or Non-Programmable modes.
- Easy-View Backlight: Clear, illuminated display for enhanced readability.
- User-Selectable Periods: Choose between 2 or 4 programming periods per day.
- Keypad Lock: Prevents unauthorized adjustments to settings.
- LuxLight EL Display: Electro-Luminescent lighted display.
- Energy Usage Monitor: Helps track energy consumption.
- Programmable Air Filter Life Timer: Reminds users when to change the air filter.
- Manual Temperature Hold: Allows for temporary temperature overrides.
- Adjustable Vacation Hold: Set a specific temperature for 1 to 30 days.
- Dual-Powered: Can be powered by batteries and/or a 24-volt system.
- Battery-Free Memory Storage: Retains settings during power outages.
- F/C Temperature Display: Switch between Fahrenheit and Celsius.
- 12/24-Hour Clock Display: Select preferred time format.
- 5/2-Minute Time Delay: Protects equipment from short cycling.
System Compatibility
Figure 3: Image detailing the types of HVAC systems compatible with the thermostat.
The P721UT-010 thermostat has an electrical rating of 1.5 Amps per terminal, with a maximum total combined load of 3.0A for all terminals. It is compatible with:
- Most 24-volt heating and cooling systems.
- 1 or 2 stage Heat / 1 stage Cool: Gas, Oil, or Electric systems.
- 1 or 2 stage Heat / 1 stage Cool: Heat Pump systems.
- 3-wire hydronic (hot water) zone valves.
- Gas Millivolt heaters.
Not Compatible With:
- 120/240 VAC line-voltage systems (without a transformer). Consult your LUX dealer for compatible thermostats for these systems.
Setup and Installation
Before beginning installation, ensure the power to your HVAC system is turned off at the circuit breaker to prevent electrical shock.
Wiring Diagrams
Refer to the following diagrams for proper wiring connections based on your system type. The factory RH-RC jumper wire is installed for most common systems.
Figure 4: Wiring diagram for 1-stage or 2-stage heating only systems (including millivolt). Note: Fan wire may not be present in all systems.
Figure 5: Wiring diagram for hot water heating only systems with a 3-wire zone valve.
Battery Installation
The thermostat requires 2 AA batteries for operation and memory backup. Insert the batteries into the compartment located on the back of the thermostat, ensuring correct polarity. Remove any insulating tabs if present.
Operating Instructions
The Lux Pro P721UT-010 features an intuitive touchscreen interface for easy operation. The screen lights up when touched, providing visibility in low-light conditions.
Figure 6: Labeled diagram of the P721UTa thermostat's display and controls.
Basic Controls
- Menu Button: Access programming and advanced settings.
- Fan Mode Switch: Select between AUTO (fan runs only when heating/cooling) or ON (fan runs continuously).
- System Mode Switch: Choose between HEAT, OFF, or COOL.
- Temperature Adjustment: Use the up/down arrows on the touchscreen to change the set temperature.
- Hold Function: Press the 'HOLD' button to maintain the current temperature indefinitely, overriding the program schedule.
Programming Your Thermostat
The thermostat allows for 7-day, 5/2-day, or non-programmable operation. You can set 2 or 4 periods per day to customize your heating and cooling schedule.
- Press the MENU button to enter programming mode.
- Follow the on-screen prompts to set the time, day, and desired temperatures for each period.
- Select your preferred programming schedule (7-day, 5/2-day, or non-programmable) within the menu.
- Confirm settings to save your program.
Keypad Lock
To prevent unauthorized changes, activate the keypad lock feature through the menu settings. Refer to the full instruction manual for detailed steps on enabling and disabling this feature.
Maintenance
Battery Replacement
The thermostat uses 2 AA alkaline batteries. When the battery indicator appears on the display, replace the batteries promptly to ensure continuous operation and prevent loss of settings. Even with 24-volt power, batteries are crucial for memory backup during power outages.
Air Filter Reminder
The thermostat features a programmable air filter life timer. When the 'CHANGE FILTER' message appears on the display, it is time to inspect or replace your HVAC system's air filter. Reset the timer through the menu after changing the filter.
Cleaning
To clean the thermostat's touchscreen and casing, use a soft, damp cloth. Do not use abrasive cleaners or solvents, as these can damage the display or plastic components.
Troubleshooting
If you encounter issues with your Lux Pro P721UT-010 thermostat, consider the following common troubleshooting steps:
- No Display/Power: Check if the batteries are correctly installed and have sufficient charge. Ensure the HVAC system's power is on at the circuit breaker.
- Incorrect Temperature Reading: Verify that the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its sensor.
- System Not Responding: Check all wiring connections to ensure they are secure and match the appropriate diagram for your system. Confirm the system mode switch (HEAT/OFF/COOL) is set correctly.
- Programming Issues: If the schedule is not working as expected, re-enter the programming mode and verify all settings for each period and day. Ensure the 'HOLD' function is not active.
- Keypad Unresponsive: If the touchscreen is not responding, try gently cleaning the screen. If the issue persists, a soft reset (removing and reinserting batteries) might be necessary.
For persistent issues or complex problems, it is recommended to consult a qualified HVAC technician or refer to the comprehensive troubleshooting guide available on the LUX website.
Specifications
| Attribute | Detail |
|---|---|
| Brand | LUX |
| Model Name | P721UT: 2 heat & 1 cool Stage, Touchscreen |
| Model Number | P721UT-010 |
| Controller Type | Touch, Push Button |
| Color | White |
| Specific Uses | Ductless systems |
| Temperature Control Type | Programmable |
| Connectivity Technology | Wi-Fi |
| Included Components | P721UT-010 7 Day Programmable Thermostat |
| Power Source | Battery Powered |
| Voltage | 24 Volts |
| Material | Plastic |
| Display Type | LED |
| Control Method | Touch |
| Mounting Type | Wall Mount |
| Backlight | Yes |
| Number of Batteries | 2 AA batteries required |
| Item Weight | 2.4 ounces |
| Product Dimensions | 5.38 x 1.13 x 3.38 inches |
| UPC | 021079139606 |
Warranty and Support
For detailed warranty information and customer support, please refer to the official LUX website or contact their customer service directly. The product typically comes with a manufacturer's warranty covering defects in materials and workmanship.
Online Resources: Visit the LUX Store on Amazon for additional product information and resources.
