Technical Precision 22V24+22V25
Lennox S40 Smart Thermostat and 22V25 Smart Room Sensor User Manual
Model: 22V24+22V25
Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Lennox S40 Smart Thermostat and 22V25 Smart Room Sensor combo pack. The Lennox S40 Smart Thermostat is designed to integrate seamlessly with Lennox communicating products, offering advanced control and efficiency for your heating and cooling system. The accompanying 22V25 Smart Room Sensor enhances comfort by providing precise temperature and occupancy data, allowing for optimized climate control throughout your home.
The S40 Smart Thermostat automatically configures and controls your HVAC system based on user-specified settings, ensuring optimal comfort, performance, and efficiency. It simplifies system setup by recognizing model and serial number information from Lennox digitally communicating products. The 22V25 Smart Room Sensor wirelessly transmits real-time room temperature and occupancy data to the S40 thermostat via a Bluetooth Low Energy (BLE) mesh network, contributing to a personalized and efficient climate experience.
Product Components
Your Lennox S40 Smart Thermostat and 22V25 Smart Room Sensor combo pack includes the following items:
- One (1) Lennox S40 Smart Thermostat (Model 22V24)
- One (1) Lennox 22V25 Smart Room Sensor
- Two (2) AA 1.5V Lithium-Ion Batteries (for the 22V25 Smart Room Sensor)
Image: The Lennox S40 Smart Thermostat (left, a tablet-like device displaying temperature and settings) and the Lennox 22V25 Smart Room Sensor (right, a small white rectangular device) as they appear in the product package.
Setup Guide
Lennox S40 Smart Thermostat Installation
- Wiring: The S40 Smart Thermostat uses standard 4-wire thermostat wiring. For communication terminals (I+ and I-), it is highly recommended to use 18-22AWG shielded thermostat cable to minimize noise interference.
- Compatibility: The S40 Smart Thermostat with an optional Equipment Interface Module (EIM, Model 22X18) is compatible with most 24VAC furnaces, air conditioners, air handlers, and heat pumps (up to 3 stages of heat and 2 stages of cooling). Note that it will not work with communicating HVAC equipment from brands other than Lennox.
- System Configuration: The thermostat is designed to automatically configure and control Lennox communicating products. For non-communicating systems, the optional Equipment Interface Module (EIM) is required.
- Initial Setup: Utilize the new Lennox Smart Technician app for quick and easy installation. Installer setup screens on the thermostat allow for simple system configuration without requiring a manual.
Image: The Lennox 22V25 Smart Room Sensor shown mounted on a wall, indicating its typical installation location for optimal room temperature and occupancy sensing.
Lennox 22V25 Smart Room Sensor Setup
- Battery Installation: Insert the two included AA 1.5V lithium-ion batteries into the sensor. Ensure correct polarity.
- Pairing: The sensor seamlessly integrates with your Lennox S40 thermostat. Place the sensor in pairing mode (refer to the sensor's LED indicators for status: Green indicates pairing mode). Follow the instructions on your S40 thermostat to pair the sensor.
- Placement: Position the sensor in a central location within the room where you wish to monitor temperature and occupancy. Avoid placing it near heat sources, direct sunlight, or drafts, which could affect accuracy.
- Expanding Coverage: You can pair up to six 22V25 sensors with a single S40 thermostat to extend comfort control to multiple rooms.
Image: A detailed view of the Lennox 22V25 Smart Room Sensor, highlighting its compact and discreet design.
Operating Instructions
Lennox S40 Smart Thermostat Operation
The S40 Smart Thermostat features a 7-inch high-definition color touchscreen display for intuitive control and system configuration.
- System Configuration: Use the touchscreen to access and adjust all system settings, including temperature setpoints, fan modes, and system modes (Heat, Cool, Auto, Off).
- Scheduling: Create up to four separate schedules to automate your home's climate control. The Schedule IQ feature further optimizes these schedules.
- One-Touch Away Mode: Quickly set energy-saving cooling and heating setpoints when you leave your home with a single touch.
- Smart Away (Geo-fencing): Leveraging geo-fencing technology, Schedule IQ can detect when you are within a predetermined distance from your home, automatically adjusting the system as you leave, are away, and arrive.
- Weather-On-Demand: Access live, up-to-date weather data and seven-day forecasts directly on the thermostat screen.
- Alerts and Troubleshooting: Scheduled maintenance alerts, system warnings, and troubleshooting information are displayed directly on the thermostat screen.
Image: The vibrant 7-inch high-definition color display of the Lennox S40 Smart Thermostat, showing the main interface with current temperature, setpoints, and weather information.
Lennox 22V25 Smart Room Sensor Functionality
- Precision Monitoring: The sensor continuously captures real-time room temperature and occupancy data. This data is wirelessly transmitted to your S40 thermostat.
- Smart Algorithm for Comfort: The sensor's intelligent algorithm calculates an average room temperature based on both occupancy and temperature sensor input. This information, combined with the thermostat's built-in sensors, ensures optimal comfort conditions in your living space.
Maintenance
Lennox S40 Smart Thermostat
- Cleaning: Gently wipe the touchscreen display and the thermostat's exterior with a soft, damp cloth. Avoid abrasive cleaners or solvents.
- Scheduled Alerts: The thermostat will display scheduled maintenance alerts for your HVAC system. Follow these prompts for routine system checks and filter replacements as recommended by your HVAC professional.
Lennox 22V25 Smart Room Sensor
- Battery Replacement: The sensor operates on two AA 1.5V lithium-ion batteries, which typically last for two years. When the battery level is low, the sensor's LED indicator will turn red. Replace both batteries promptly to ensure continuous operation.
- Cleaning: Wipe the sensor's exterior with a soft, dry cloth. Do not use liquids or sprays directly on the sensor.
Troubleshooting
This section provides solutions to common issues you might encounter. For more complex problems, consult a qualified HVAC technician or contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| S40 Thermostat Display is Blank | No power to the thermostat. | Check the circuit breaker for your HVAC system. Ensure wiring connections are secure. If using an EIM, verify its power supply. |
| HVAC System Not Responding | Incorrect wiring; System mode is Off; Thermostat not communicating with HVAC unit. | Verify wiring connections. Ensure the thermostat is set to Heat, Cool, or Auto mode. If using a non-Lennox communicating system, ensure the EIM is correctly installed and configured. Check for system warnings on the thermostat screen. |
| 22V25 Sensor Not Communicating | Low battery; Sensor out of range; Pairing issue. | Check sensor LED: Red indicates low battery (replace batteries). Blue indicates signal strength is low or out of range (move sensor closer to thermostat or other paired sensors). Re-attempt pairing with the S40 thermostat. |
| Inaccurate Temperature Readings (Sensor) | Sensor placed near heat sources, direct sunlight, or drafts. | Relocate the 22V25 sensor to a more neutral location in the room, away from direct environmental influences. |
The S40 Smart Thermostat displays system warnings and troubleshooting information directly on its screen. For advanced diagnostics, an installer can run tests on the complete system or individual components via the thermostat's interface. The Service Dashboard also offers online real-time monitoring for digitally enabled systems.
Product Specifications
| Feature | Specification |
|---|---|
| Product Name | Lennox S40 Smart Thermostat and 22V25 Smart Room Sensor Combo Pack |
| Manufacturer | Lennox |
| Model Numbers | S40 Thermostat: 22V24, Room Sensor: 22V25 (Combo: 22V24+22V25) |
| Color | White |
| S40 Thermostat Display | 7-inch High-Definition Color Touchscreen |
| S40 Thermostat Wiring | 4-wire standard thermostat wiring (18-22AWG shielded recommended for I+/I- terminals) |
| 22V25 Sensor Power | 2 x AA 1.5V Lithium-Ion Batteries (included) |
| 22V25 Sensor Battery Life | Approximately 2 years |
| 22V25 Sensor Communication | Bluetooth Low Energy (BLE) mesh network |
| 22V25 Sensor Max Range | 70 feet (to thermostat or other paired sensors) |
| Max Sensors per S40 | Up to 6 sensors |
Image: The Lennox 22V25 Smart Room Sensor with its approximate dimensions: 5.5 inches in height, 3 inches in width, and 4 inches in depth, providing a visual reference for its size.
Warranty and Support
For specific warranty details regarding your Lennox S40 Smart Thermostat and 22V25 Smart Room Sensor, please refer to the documentation provided with your product at the time of purchase or visit the official Lennox website. Warranty terms typically cover manufacturing defects and may vary.
For technical support, troubleshooting assistance beyond this manual, or inquiries about service, please contact the manufacturer, Lennox, or the seller, Technical Precision. Contact information can usually be found on their respective websites or on your purchase receipt.
Consider available extended protection plans for additional coverage beyond the standard manufacturer's warranty. These plans are often offered by retailers and provide peace of mind for a longer duration.