Dealer FAQs | Support Center - Lennox Smarter Together

- - Does the S40 box contain everything that is needed for install?
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    The box contains main items needed for you to install the S40 Smart Thermostat on the wall. It includes:
    • One Lennox S40 Smart Thermostat
    • Thermostat wall mounting plate with terminals
    • Mounting screws and anchors
    • Installer Quick Start Guide
    • Warranty Certificate
  - Where is the Smart Hub?
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    The S40 Smart Thermostat is one-piece architecture. There is no separate smart hub, as with the S30 design. The LCC is contained within the thermostat.
  - With the absence of a Smart Hub, how does the S40 establish a Wi-Fi connection?
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    The LCC is still part of the S40, it is now contained inside the thermostat. The Wi-Fi connection is established the same way that it did on the S30.
  - To ensure a reliable Wi-Fi connection, how close must the S40 be to the nearest Wi-Fi Access Point?
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    The S40 Thermostat should be within 25 feet of the nearest Wi-Fi Access Point. This distance will be directly affected by the environment (i.e., walls, glass, metal, other electronic devices, etc.)
  - Will the S40 require shielded cable?
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    Lennox recommends 18AWG unshielded thermostat cable. Keep thermostat cables at least one foot away from large electrical wiring used for motors, line starters, lighting ballasts and large distribution panels. Failure to follow these wiring practices may introduce electrical interference (noise) which can cause erratic system operation. All unused thermostat wire should be grounded to the indoor unit chassis only.
    
    NOTE: Shielded cable may be required if the above wiring guidelines cannot be met.
  - Is the S40 powered by an AC or DC power source?
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    The S40 is powered by 24 Volts AC.
  - Will I have 24 volts present at the sub-base?
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    24 Volts will be present between “R” & “C” on the sub-base.
  - Which zone sensors should I use with the S40?
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    You will continue to use the Lennox Smart Zoning System (formerly known as iHarmony).
  - Will the S40 have the ability to connect to the zone sensors wirelessly?
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    Currently Lennox does not offer a wireless zone controller. You may continue to utilize the Lennox Smart Zoning System (formerly known as iHarmony).
  - Can I hide the S40 Smart Thermostat in a closet and use the Smart Room Sensor as primary thermostat?
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    No, we do not recommend you hide your S40 Smart Thermostat in a closet. The Smart Room Sensor is a battery powered device that can be placed in less-than-ideal areas. If the temperature difference between the Smart Room Sensor and the S40 is outside a 2–10-degree range (default 7 degree), the system will disregard the data from the Smart Room Sensor and rely on the S40. For this reason, the S40 must still be able to monitor the temperature of the general living space. If the S40 is in a closet buried behind coats, it would be hard for the S40 to accurately monitor the dwelling spaces temperature.
  - How is the ERV/HRV connected to the system?
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    An ERV/HRV or Fresh Air Damper is connected to the S40 with the enhanced Equipment Interface Module (Cat# 22X18).
  - Will the new smart devices be discovered automatically during the commissioning process?
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    You can discover new smart devices through the Lennox Smart Technician App. With the Smart Tech App, the smart devices will be discovered through the BLE Mesh network. A wizard will walk you through the installation steps.
  - If accessories are added after the initial commissioning is performed, will the S40 automatically detect the addition of new devices?
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    You can discover new devices through the Lennox Smart Technician App or a homeowner can add new devices through the Lennox Home App, as long as there is an existing BLE Mesh Network.
  - Will Lennox e-mail the Dealer and consumer a copy of the installation report?
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    No, the installation report will be available only to the dealers on the Service Dashboard. We encourage dealers to share the installation report with homeowners so they can be rest assured you installed their system up to manufacturer's standards.
  - Will the S40 display the wireless signal strength to connected wireless devices?
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    The S40 will display whether the signal strength is good, fair, poor or if it has a connection issue. If the signal strength is poor or if there is a connection issue it will display a message and provide the recommendation to move the sensor to a better location or to call the dealer to add a Wireless Extender.
  - Will the Dealer have the ability to view alerts (error codes) on a consumer's thermostat, even if the consumer has not granted the Dealer permission to access their S40?
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    No. The dealer will not be able to view alerts if the homeowner has not granted permission.
    
    To set up advanced diagnostics and alerts, there is a two-step process.
    
    First step is that you MUST enter your dealer ID to connect that S40 to your dealer account.
    
    Second step is for the homeowner to turn on the three permissions for advanced diagnostics and troubleshooting, remote sharing and alerts and notification. If they have not turned on these permissions, you will not have the ability to view their alerts.
  - Where is the modes/schedule button?
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    Previously the S30 modes/ schedules option was available on the home screen. Now on the S40, Modes and Schedule are 2 different options now. They can be accessed by going to
    
    Menu > Mode
    
    Menu > Schedule
  - Will the S40 have its own mobile app?
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    Yes, the S40 has two brand new apps that are specifically used with the S40:
    - • Lennox Smart Technician App for installers and technicians
    - • Lennox Home App for homeowners
    For installing & troubleshooting the S30, continue using the iComfort Dealer Setup App. S30 homeowners should continue to use the iComfort Thermostat App. If a homeowner has both an S30 and an S40, they will have to use the specific thermostat apps to control each thermostat.
- - What are the new features? Did we lose any features?
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    There are quite a few differences between the new Lennox S40 Smart Thermostat and the iComfort S30 but there are also some things that will stay the same. Let's go through some of these items:
    - • You now have a one-piece architecture, so no separate Smart Hub. The LCC is still there, it is now contained inside the S40 display.
    - • The Wi-Fi connection for the S40 still works the same as the S30.
    - • There is a new user interface on the S40. You will see a cleaner, sleeker design that is less cluttered.
    - • You can navigate easily through the various screens by simply swiping the screen left or right. In addition, you can also tap on the menu bar up top to access each screen.
    - • The S40 will be a replacement for the S30. It will work with any Lennox communicating equipment.
    - • However, the S30 will not work with the new smart accessories: Smart Room Sensor, Smart Air Quality Monitor and Wireless Extender.
    - • For installation, you have a brand-new app that only works with the S40: The Lennox Smart Technician App.
    - • For installing & troubleshooting the S30, continue using the iComfort Dealer Setup App.
    - • New to the S40 is a BLE Mesh Network or protocol. BLE stands for Bluetooth Low Energy. This proprietary protocol is unique to Lennox and created to pair the S40 with the new smart accessories: The Smart Room Sensors, the Smart Air Quality Monitor and the Wireless Extender. If you are installing any of the smart accessories to an S40, you will need to create a BLE Mesh Network via the Lennox Smart Technician App first. Then the Smart Tech App will walk you through a wizard to install each product. It is as simple as pairing your airpods to your iPhone.
    - • Dealers will be able to view a detailed Installation Report after commissioning is done (available within the Service Dashboard). We encourage dealers to share the installation report with homeowner so they can be rest assured you installed their system up to manufacturer's standards.
    - • The S40 and the new smart accessories have Service Dashboard integration. You will be able to see these products under each homeowner account, as long as you enter your dealer ID at time of install. You will even be able to monitor the air quality levels of your homeowner, and this can be used as leads for IAQ product sales.
    - • There is a new homeowner app, the Lennox Home App. If a homeowner has an S30 and replaces it with an S40, they will need to use the new app. If they have both an S30 and an S40 in their home, they will have to use both apps.
    - • There is no consumer portal for the S40. All items will be viewed through the Lennox Home App.
    - • Since there is no consumer portal for the S40, instead homeowners will have to opt-in to receive their monthly performance report. However, the homeowner's equipment performance can still be viewed within the Service Dashboard for dealers.
    - • The new S40 effortlessly integrates with a range of smart home devices—from premium smart home systems like Control4 to popular voice-activated devices like Amazon Alexa, and Google Assistant. The S40 will also have Building 36 integration.
    - • Please note that the S40 will not support IFTTT. Apple HomeKit integration will come at a future date.
  - Which zoning systems will be compatible with the S40?
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    The Lennox Smart Zoning System (formerly known as iHarmony) is the zoning system that works with the S40.
  - Will the S40 have a 'simple or basic mode', i.e., a mode that is tailored to users that are 'technology challenged'?
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    When the S40 is in the Heat or Cool mode, and not running a schedule, it provides a simple or basic mode to adjust the temperature up or down.
  - How do I disable the camera on the thermostat?
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    There is no camera on the S40 Smart Thermostat. What you or a homeowner may perceive as a camera is really the ambient and occupancy sensor.
  - Is the S40 compatible with non-communicating devices?
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    Yes, the S40 thermostat can control non-communicating heating and cooling equipment along with HRVs/ERVs, humidifiers and dehumidifies through Lennox's Equipment Interface Module catalog number (22X18).
  - Which color options are available?
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    The S40 Smart Thermostat comes in white and will blend better on the homeowner's walls.
  - Will the display be available in different sizes?
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    No, the S40 Smart Thermostat display only comes as a 7” display.
  - What is the warranty of the S40 Smart Thermostat?
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    The S40 Smart Thermostat has a 10-Year Warranty.

- - Does the Smart Air Quality Monitor box contain everything that is needed for install?
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    The Smart Air Quality Monitor packaging contains main items needed for you to install the Smart Air Quality Monitor using 24V power from the S40 Smart Thermostat. It includes:
    • One Lennox Smart Air Quality Monitor
    • Wall anchors & screws
    • Three-wire splice connectors
    • Mounting template
    • Installer Quick Start Guide
    • Homeowner Quick Start Guide
    • Warranty Certificate
    
    If you wish to install the S40 in a different location, you can use a 24V transformer (sold separately) for power and mount the Smart Air Quality Monitor in your desired location as long as it is within reach of the allowable communication range of the S40 thermostat. You can place the Smart Air Quality Monitor in a common living area. The Smart Air Quality Monitor needs to be installed on the wall.
  - Is the Smart Air Quality Monitor compatible with existing home automation systems?
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    The Smart Air Quality Monitor only collects data and sends it to the S40 Smart Thermostat. The S40 integrates with Amazon Alexa, Google Assistant, Building 36 and Control4.
  - Is the iComfort Mobile Setup (Dealer Setup) app required to setup the Smart Air Quality Monitor?
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    No, to install the S40 and the new smart devices, you will need to install and use the new Lennox Smart Technician App.
  - Will the Smart Air Quality Monitor control PureAir, Healthy Climate cabinets, humidifiers/dehumidifiers, HRV/ERV, etc.?
    Back to Questions
    
    The Smart Air Quality Monitor collects data and sends it to the S40 Smart Thermostat. Upon fair or poor air quality being detected, the S40 will use indoor air quality equipment installed with the system to mitigate bad air quality. The S40 can control Healthy Climate products such as the PureAir, HRV/ERV, Fresh Air Dampers, humidifier and dehumidifiers. In addition, it can provide dilution/circulation through high efficiency filters such as the Carbon Clean 16.
  - What is the warranty of the Smart Air Quality Monitor?
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    The Smart Air Quality Monitor has a 2-Year Warranty.
  - How do I start using the Smart Air Quality Monitor?
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    Install the Lennox Home App which, connected to the Lennox S40 Smart Thermostat, allows you to monitor and control air quality from anywhere.
    
    The Smart Air Quality Monitor will collect data on fine particles (PM2.5), carbon dioxide (CO2) and volatile organic compounds (VOC) levels inside your home.
    
    The Smart Air Quality Monitor transmits the data to the Lennox S40 Smart Thermostat, which analyzes the data and displays air quality level on the thermostat's display and on the Lennox .
  - Will the Smart Air Quality Monitor only work in communicating applications?
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    Yes, at this time, the Smart Air Quality Monitor only works with communicating equipment when installed with the S40 Smart Thermostat.
  - Can I paint the Smart Air Quality Monitor?
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    No, do not paint the air quality monitor. Doing so could affect the monitoring functions of the sensors.
  - Where are the best locations to have the Smart IAQ Monitor installed?
    Back to Questions
    
    The Smart Air Quality Monitor needs 24V power connection, so we recommend your dealer uses the same connection used for the S40. If you wish to have it installed in a different area, your Lennox dealer can use a 24V transformer for power as long as it is within reach of the allowable communication range of the S40 thermostat. You can place the Smart Air Quality Monitor in a common living area. The Smart Air Quality Monitor needs to be installed on the wall.
  - Can I move my Smart Air Quality Monitor?
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    We do not recommend that you move the Smart Air Quality Monitor once it is installed. If you do need to relocate the monitor, call your Lennox dealer for assistance.
  - When should I postpone cleaning and why?
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    Ensuring you have clean air inside your home is why you purchased the Smart Air Quality Monitor. We do not recommend that you postpone cleaning your air when your S40 activates one of the cleaning mechanisms. However, there may be times when you intentionally will want to postpone cleaning the air. Examples are: you are painting inside the home, installing floors, when you have your windows or doors open to let fresh air in or if you are trying to enjoy a scented candle.
  - Is the monitor battery powered?
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    No, the Smart Air Quality Monitor does run on battery power. It is powered by a 24VAC power connection.
  - How often does the Smart Air Quality Monitor need to be calibrated?
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    No calibration is needed.
  - Can I use the Smart Air Quality Monitor outdoors?
    Back to Questions
    
    No, this is designed for indoor air quality measurements only.
  - How many Smart Air Quality Monitors can I have in my home?
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    You can only have one Smart Air Quality Monitor per S40 Smart Thermostat. If you have multiple systems in your home, each with an S40 Smart Thermostat, you can attach a Smart Air Quality Monitor to each S40.
  - I already have indoor air quality equipment installed in my home, why do I need to measure my indoor air quality?
    Back to Questions
    
    The EPA states the air inside the home can be 2-10X more polluted than outside air. You cannot see, smell or touch poor air quality but poor air quality will affect how you feel. That is why you need not only need a way to measure the pollutants inside your home, but you also need a product that will mitigate the poor air quality inside your home.
  - Can I create my own BLE (Bluetooth Low Energy) Mesh network?
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    The first device must be added by your dealer in order to create the BLE network. Afterwards, you can add or remove devices using the Lennox Home App. The BLE Mesh Network for these products is proprietary to Lennox and you cannot use 3rd party BLE networks or devices.
  - Can I add or remove Smart Air Quality Monitor on my own?
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    The first smart device must be added by the technician in order to create the BLE network. Afterwards, you can add or remove smart devices using the Lennox Smart Thermostat app.
  - How do I add a Smart Air Quality Monitor to my home?
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    1. Open the Lennox S40 Smart Thermostat app: Go to Menu.
    2. Under System select Settings.
    3. Under Smart Devices select Add.
  - How do I replace a Smart Air Quality Monitor in my home?
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    To replace an already installed device from the Lennox S40 Smart Thermostat, use the following procedure:
    
    1. On the Lennox Home App: Go to Menu > Settings > Smart Devices.
    2. Select the Smart Air Quality Monitor to replace and follow the screen prompts.
    3. If you wish to reuse the device you replaced in the future, perform a factory reset on the device.
  - How do I remove a Smart Air Quality Monitor in my home?
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    This procedure can also be used to remove a device from the network that is inoperable.
    
    To remove an already installed device from the Lennox S40 Smart Thermostat, use the following procedure:
    
    1. On the Lennox Home App: Go to Menu > Settings > Smart Devices.
    2. Select the Smart Air Quality Monitor to remove and follow the screen prompts.
    3. It could take up to two minutes before the Smart Air Quality Monitor is removed from the S40 Smart Thermostat BLE Mesh network.
    
    Once the Smart Air Quality Monitor is removed from the BLE Mesh network, make sure that the power to the Smart Air Quality Monitor is turned off or disconnected to be removed.
  - Can I change the name of my Smart Air Quality Monitor?
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    1. Open the Lennox Home App. Go to System Settings and tap on the Wireless Extender.
    2. You can tap on Monitor Name and type in your desired Wireless Extender name.
  - Can I pair multiple Smart Air Quality Monitors at the same time?
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    No, only one Smart Air Quality Monitor can be paired at a time.
- - How does the Smart Air Quality Monitor work?
    Back to Questions
    
    The Lennox Smart Air Quality Monitor detects and tracks particulates, carbon dioxide and volatile organic compounds (VOC's) inside the home. When poor quality air is detected, it triggers your system to cycle and clean the air, providing peace of mind that your family is breathing the most healthy, perfect air.
    
    When your HVAC system includes Healthy Climate® indoor air quality products, it can more effectively address the problems it detects. In fact, the Lennox Smart Air Quality Monitor is the only monitor available that enables on-demand ventilation, purification and filtration based on real-time air quality readings.
  - How does the Smart Air Quality Monitor know if the air quality is Good, Fair or Poor?
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    Sensors inside the monitor measure the levels of pollutants inside your home. The Smart Air Quality Monitor then sends that data to the S40 Smart Thermostat.
  - Will the Smart Air Quality Monitor replace AccuWeather?
    Back to Questions
    
    No, the Smart Air Quality Monitor works in conjunction with AccuWeather.
  - What range are you using to assess air quality scores and what do the color-coded scores mean?
    Back to Questions
    
    The ranges your Lennox Smart Air Quality Monitor reports (Good, Fair and Poor) are the same levels the EPA uses in reporting AQI (Air Quality Index) for PM2.5.
    
    • Green = Good air quality
    • Yellow = Fair air quality
    • Orange = Poor air quality
  - Which VOCs can the Smart Air Quality Monitor detect? How many different pollutants will it measure?
    Back to Questions
    
    The Smart Air Quality Monitor is measuring overall VOCs or chemical, PM2.5 or particulate matter and CO2 levels inside a home. The Smart Air Quality Monitor will not breakdown each of these 3 pollutants further.
  - Will the Smart Air Quality Monitor detect carbon monoxide?
    Back to Questions
    
    No, the Smart Air Quality Monitor does not detect carbon monoxide. Most homes already have an existing carbon monoxide detector.
  - Can dealers read actual CO2/PM2.5/VOC levels on the Service Dashboard?
    Back to Questions
    
    If the homeowner has installed the Smart Air Quality Monitor and you have connected the S40 to your dealership, yes, you will be able to view the current air quality score for each homeowner. In addition, you can access their monthly performance report. This can be used as indoor air quality leads. If you see consistently high levels of a specific pollutant, i.e. CO2 levels, you can proactively contact the homeowner and offer ventilation solutions.
  - Will the Smart Air Quality Monitor tell me specific levels of CO2, particulates, and/or VOCs?
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    No. The Smart Air Quality Monitor will give you an overall score for each of these pollutants, (it will report if they are good, fair or poor) but it will not break down each into components for each pollutant.
  - What happens when my Smart Air Quality Monitor detects fair or poor air quality inside my home?
    Back to Questions
    
    When fair or poor air-quality levels are detected, the Smart Air Quality Monitor will use the indoor air quality equipment in your HVAC system to clean the air. If you do not have indoor air quality products or have consistently poor levels of pollutants in your home, the S40 Smart Thermostat will provide indoor air quality product recommendations to improve air quality (sold separately).
    
    You will receive a notice on the S40 Smart Thermostat and on the Lennox Home App when air cleaning has been triggered that says, “Cleaning Air”.
    
    The S40 Smart Thermostat will start cleaning the air when the Smart Air Quality Monitor detects fair or poor air quality, however, you can postpone cleaning the air when you want to. For example, if you are enjoying the fragrance of a scented candle, you can postpone cleaning the air for a specific period.
  - Will the Smart Air Quality Monitor give me a breakdown of which pollutants are present? Can the system generate and e-mail an IAQ report?
    Back to Questions
    
    The Smart Air Quality Monitor will report to the S40 the individual scores for each pollutant, along with an overall Air Quality score. When it detects fair or poor air quality, you will receive a notification that the S40 is cleaning the air. You can only see the current air quality score on the S40 display or on the Lennox Home App. For a more detailed report, opt-in to receive the Monthly Performance Report where you can see the daily pollutants level inside the home.
  - What mechanisms is the S40 using to clean the air inside my home?
    Back to Questions
    
    Filtration – at minimum, the S40 Smart Thermostat will run the blower to circulate the air through the filter. We recommend you install a high-efficiency filter such as our Carbon Clean 16®.
    
    Purification – if you have a PureAir S air purification system installed, the S40 Smart Thermostat will run the PureAir S when you need it.
    
    Ventilation – if you have a Healthy Climate HRV or ERV installed, The S40 will run the ventilation system on demand.
  - Will the Smart Air Quality Monitor provide reports showing contaminant levels at specific times throughout the day, i.e., 30 minute or 1-hour increments?
    Back to Questions
    
    No. You can only see the current air quality score on the S40 display or on the Lennox Smart Thermostat app. For a more detailed report, opt-in to receive the Monthly Performance Report where you can see the daily pollutants level inside the home.
  - What are the individual pollutants measured and how will they affect the IAQ score?
    Back to Questions
    
    PM2.5 - PM stands for particulate matter (also called particle pollution), the term for a mixture of solid particles and liquid droplets found in the air you can breathe. 2.5 is a measurement for the fine inhalable particles, with diameters that are generally 2.5 micrometers and smaller. Breathable air particles can include: pet dander, bacteria, mold, chemicals from cleaning products, building materials, fuel-burning equipment such as furnaces, upholstered goods, cooking, sweeping, copy machines, skin flakes, clothing fibers, combustion, cooking, smoke, dust, dirt, spores, pollen. Sources vary seasonally.
    
    CO2 – (also known as carbon dioxide) is an odorless, colorless, non-flammable gas. CO2 is a byproduct of combustion, as well as a result of the metabolic process in living organisms (for example, you remove it from your body via the lungs in exhaled air).
    
    VOC – (also known as volatile organic compounds or chemicals) are a combination of gases and odors released/emitted/off-gassed from a variety of sources. VOC include a variety of chemicals, some of which may have short- and long-term adverse health effects. Alternate terms: odors, gases, vapors, or chemicals.
  - What will affect the indoor air quality score the most?
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    Different factors affect your indoor air quality in different ways. Opening and closing doors will alter your indoor air quality. Cleaning, lighting a scented candle, cooking, new furniture or fixtures (such as wood flooring or carpet) can release contaminants. Also, those scented candles and air fresheners are very high in VOCs.
  - How fast will the IAQ equipment respond?
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    The Smart Air Quality Monitor is continuously collecting data and transmitting it every minute to the S40. The S40 Smart Thermostat displays a 5-minute moving average.
  - Does the Smart Air Quality Monitor contain a battery level indicator?
    Back to Questions
    
    No, it does not have a battery level indicator as it is not battery powered. It will give you a BLE Mesh Signal strength indicator.
  - Why do I need a monitor when I can just use a test kit from the hardware store?
    Back to Questions
    
    A test kit that will only give you a snapshot in time and will not mitigate. The Smart Air Quality Monitor is constantly reading and reporting your indoor air quality in the home and the S40 Smart Thermostat will clean the air on demand.
  - Is the Smart Air Quality Monitor connected to the internet/WiFi/Cloud?
    Back to Questions
    
    No, the Smart Air Quality Monitor is sending data to the S40 Smart Thermostat via a proprietary Bluetooth protocol or BLE Mesh.
  - Does the monitor have any visible information or audible alarms?
    Back to Questions
    
    No, the Smart Air Quality Monitor does not have a display or sounds. All information is displayed on the S40 Smart Thermostat display or the Lennox Home App.
  - Can I change the Smart Air Quality Monitor's sensor sensitivity?
    Back to Questions
    
    No, the sensors sensitivity is set for each pollutant and cannot be adjusted.
  - What is Cleanliness and can I adjust it?
    Back to Questions
    
    Yes, cleanliness is a setting to direct mitigation for VOC levels only (does not factor Co2 or PM2.5 levels). By selecting basic, you are widening the range of “good” VOC levels so mitigation may be delayed. If you select “high,” you are narrowing the “good” range and therefore prompting quicker mitigation of VOC levels. You can ask your Lennox dealer to adjust the level of indoor cleanliness. Your options are:
    • High
    • Medium
    • Basic (most economical)
  - How long does the Smart Air Quality Monitor take to start providing reliable indoor air quality scores?
    Back to Questions
    
    Your Smart Air Quality Monitor can provide reliable air quality scores within 15 minutes of being installed.
  - The outdoor air quality around me is bad, what is the Smart Air Quality Monitor doing?
    Back to Questions
    
    The Smart Air Quality Monitor is working with the S40 Smart Thermostat and looking at the outdoor weather conditions. Real-time weather tracking meets seamless connectivity and communication. When paired with a ventilation system, it tracks the outdoor stats. If the climate conditions inside are better than what's outside, the Lennox Smart Air Quality Monitor will tell the Lennox S40 Smart Thermostat not to ventilate the home.
  - Will the Smart Air Quality Monitor measure carbon monoxide?
    Back to Questions
    
    No, it does not. It measures PM2.5, CO2 and VOCs inside your home.
- - How do I know if the Smart Air Quality Monitor is working?
    Back to Questions
    
    You can see the levels of pollutants inside your home via the S40 Smart thermostat or your Lennox Home App.
    
    Tap on the “My Home” tab and then tap on your Smart Air Quality Monitor icon. You will see a “Current Air Quality” score along with the score for each of the air quality pollutants being measured.
    
    A gray score means the Smart Air Quality Monitor is not working properly. Call your Lennox dealer to troubleshoot.
    
    You will also be able to view the signal strength of the communication between the S40 Smart Thermostat and the Smart Air Quality Monitor. If signal strength is low, we recommend you call your Lennox dealer to add a Wireless Extender to improve the signal strength (sold separately).
  - Why is it not working?
    Back to Questions
    
    Your Smart Air Quality Monitor may not be working for one of two reasons:
    
    If you see the overall score or one of the pollutants is grey, then one of the internal sensors may be disabled. Call your Lennox dealer to troubleshoot.
    
    Your Smart Air Quality Monitor may be affected by low or no signal to the S40 Smart Thermostat. If there is not a strong signal strength, the Smart Air Quality Monitor cannot alert the S40 of the air quality inside the home and clean the air. If signal strength is low, we recommend you call your Lennox dealer to add a Wireless Extender to improve the signal strength (sold separately).
  - What is keeping the Smart Air Quality Monitor from being/becoming a nuisance?
    Back to Questions
    
    The Smart Air Quality Monitor collects all air quality pollutant readings for equipment control purposes. We ensure unnecessary information is not displayed, thus creating nuisance free notifications for homeowners.
  - What happens when my Smart Air Quality Monitor has low signal strength?
    Back to Questions
    
    The device has a built-in test functionality to confirm placement of the device is in range of the S40 thermostat. If the device is out of range of your S40 thermostat a blue LED will turn on. Regardless of application, the Smart Air Quality Monitor will indicate if adequate signal strength is present. In case of a weak signal, the Lennox Wireless Extender can be used to improve the Smart Air Quality Monitor's signal strength and thus limit the impact of interference by these sources (sold separately).
  - There are some colored lights on my Smart Air Quality Monitor, what do they mean?
    Back to Questions
    LED is only on when there is an issue with either signal strength. There are two LED Colors:
    - •Blue – Signal Strength. A blue LED indicates the signal strength is low or out of range. When the blue LED light is off it indicates signal strength is good.
    - •Green – Pairing. A green LED light indicates the unit is in pairing mode.

- - Does the Smart Room Sensor box contain everything that is needed for install?
    Back to Questions
    
    The box contains main items needed for you to install the Smart Room Sensor on the wall or place on stand. The Smart Room Sensor box includes the following:
    • One Smart Room Sensor
    • 2-AA Lithium Batteries (pre-installed)
    • One Sensor Stand
    • Wall anchors and screws
    • Wall mounting template
    • Installer Quick Start Guide
    • Homeowner Quick Start Guide
    • Warranty Certificate
  - How do I install/wire/connect the Smart Room Sensor(s)?
    Back to Questions
    
    1. Download and install the Lennox® Smart Technician Service App if not already installed on your mobile device.
    
    2. The following procedure is assuming the Lennox® S40 Smart Thermostat has already been commissioned. From the thermostat home screen, go to Menu > Settings > Advanced Settings > View Support Service Control Center and select Connect To Lennox Smart Technician App.
    
    3. Open the case and remove the insulation tape from the AA lithium batteries. Once the tape is removed the smart device will start broadcasting its ID automatically.
    
    4. The thermostat will start broadcasting its Thermostat ID.
    
    5. Start the Lennox® Smart Technician App and follow the screen prompts until you reach Service Center.
    
    6. To add a Smart Room Sensor, select Equipment Settings > Add Device.
    
    7. Follow the screen prompts to add the smart device.
    
    8. Confirm the desired sensor location has adequate signal strength.
    a. No LED light indicates the Smart Room Sensor is within range, blue LED light indicates weak signal. The Lennox® Wireless Extender (sold separately) is recommended when a location does not have a strong signal strength.
    
    9. Install the Smart Room Sensor on an interior wall at a minimum height of 5 feet (1.52 meters) or place on the stand. For more recommendations on placement of room sensors, please download the installation guide.
    
    10. It is recommended that the Smart Room Sensor is installed on a wall to ensure it will not be lost or damaged. Use the provided screws and wall anchors.
    
    11. A wall template is also included for the Smart Room Sensor installation.
    
    12. If not installed on a wall, use the included stand. Use the stand to place the smart device above the ground on a table or shelf out of reach of children and pets.
    
    13. Walk the homeowner through use of the smart device including where to find and download the Lennox® Smart Thermostat App. Refer to the Lennox® S40 Smart Thermostat User Guide on how to use the Smart Room Sensor.
  - Can I use the iComfort Mobile Setup (Dealer Setup) app to setup the smart devices?
    Back to Questions
    
    No, you must use the Lennox Smart Technician App to set up smart devices.
  - How do I start using the Smart Room Sensors?
    Back to Questions
    
    Install the Lennox Home App which, connected to the Lennox S40 Smart Thermostat, homeowners can monitor, control, and balance room temperatures from anywhere using the app.
    
    Customize your comfort by adjusting your sensor participation settings. During the busiest time of the day when your Lennox Smart Room Sensor is active, you may want to have multiple sensors participating; for example, one in the living room and one in the office.
    
    Decide if you prefer the occupancy sensor to be on or off. If you choose off, the temperatures will consistently be averaged between the main thermostat and the Smart Room Sensors. Go to Menu > Settings > Devices and look for the sensor you want to disable, select sensor and turn off.
    
    • OFF - When the occupancy feature is turned off, the thermostat will always include the sensor in temperature averaging.
    • ON - When the occupancy feature is turned ON, the thermostat will only include the sensor in temperature averaging if the room is occupied.
  - How is the information the Smart Room Sensor is collecting displayed?
    Back to Questions
    
    The information collected by the Smart Room Sensor will be displayed on both the S40 display and on the Lennox Home App.
  - How do I add a Smart Room Sensor to my home?
    Back to Questions
    
    1. Open the Lennox S40 Smart Thermostat app: Go to Menu. 2. Under System select Settings. 3. Under Smart Devices select Add.
  - How many Smart Room Sensors can I use?
    Back to Questions
    
    You can use up to six (6) Smart Room Sensors per single S40 Smart Thermostat BLE mesh network. However, you can only have a total of six (6) smart accessories to one S40 Smart Thermostat. So, if you have a Smart Air Quality Monitor or a Wireless Extender, those will count towards your 6 smart accessories.
  - Where do I place my Smart Room Sensors?
    Back to Questions
    
    Place your Lennox device at any desired location in the applicable room. If at all possible, it is recommended that the sensors are installed on a wall. This ensures the device will not be lost or accidentally damaged.
    
    The Smart Room Sensor offers versatility of installation:
    • For sensor desktop/table placement, use the provided tabletop stand. If the stand is used, then the smart room sensor should be placed out of reach of children or pets. Possible locations can include a bookshelf or a desk. Wall mounting the sensor is preferred to avoid potential loss of or damage to the smart room sensor.
    • For wall placement, install room sensor at a minimum height of 5 feet or 1.52 meters on an interior wall.
    • For effective temperature sensing, mount the sensor in a location enabling it to sense the general room environment.
  - What areas do I need to take into consideration so the Smart Room Sensor capabilities are not affected?
    Back to Questions
    
    Do not install the Smart Room Sensors where it can be affected by:
    • Drafts or dead spots behind doors and in corners
    • Exterior entrances or interior doors
    • Heat generating equipment such as kitchen appliances
    • Hot or cold air from ducts
    • Radiant heat from sun or appliances
    • Concealed pipes and chimneys
    • Non-conditioned areas such as an outside wall behind the sensor
    
    Another consideration is Bluetooth signal strength interference by physical objects and materials. The type and thickness of the material can affect how much interference is induced. One or more of the following can interfere with the Bluetooth signal:
    • Large metal objects and appliances like filing cabinets, metal doors, and refrigerators.
    • Floor and ceiling plenum spaces featuring joists, plumbing, duct work, and other materials.
    • Plaster, concrete, and specialty glass such as bulletproof or shatterproof glass
    • Water, brick, and marble materials
    • Wood, glass, and synthetic materials like plastic.
  - What kind of power does the Smart Room Sensor run on?
    Back to Questions
    
    It is recommended that the Smart Room Sensor is always powered using lithium type batteries. Batteries are pre-installed. Estimated two-year battery life when using two AA lithium batteries. We highly recommend you replace the batteries only with lithium batteries. Other AA batteries, such as alkaline AA may result in shorter battery life.
  - Does the Smart Room Sensor run on batteries? Can I choose which I'd like to use?
    Back to Questions
    
    The Smart Room Sensor runs on two (2) AA lithium batteries, which are already pre-installed. It is recommended that the unit is always powered using lithium type batteries.
  - If the Smart Room Sensor is battery powered, how long will the battery last?
    Back to Questions
    
    Estimated two year battery life when using two AA lithium batteries. Battery life expectancy is decreased when using non-lithium type batteries.
  - Does the Smart Room Sensor contain a battery level indicator?
    Back to Questions
    
    Yes, the Smart Room Sensor will show battery life. A solid red LED on the SRS will indicate expected battery life is at 3% or less. The S40 will display 2 separate alerts, one at 3% and one at 1% expected battery life.
  - Which color options are available for the Smart Room Sensor?
    Back to Questions
    
    The Smart Room Sensor only comes in one color (white). We do not recommend painting the Smart Room Sensor. Doing so could affect the monitoring functions of the sensor.
  - How far can a Smart Room Sensor be from the S40 Smart Thermostat?
    Back to Questions
    
    The S40 Smart Thermostat connects with the Smart Room Sensor via proprietary Bluetooth protocol, called a BLE (Bluetooth Low Energy) Mesh network. The range between the S40 and any smart device is approximately 70 feet. When you need to improve the connection, you will receive an alert for low signal strength. Call your Lennox dealer to install a Lennox Wireless Extender to increase the connection strength.
  - What happens when my Smart Room Sensor has low signal strength?
    Back to Questions
    
    The device has a built-in test functionality to confirm placement of the device is in range of the S40 thermostat. If the device is out of range of your S40 thermostat a blue LED will turn on. Regardless of application, the Smart Room Sensor will indicate if adequate signal strength is present. In case of a weak signal, the Lennox Wireless Extender can be used to improve the Smart Room Sensor's signal strength and thus limit the impact of interference by these sources (sold separately).
  - What is the best location that will maximize the area of detection in a room for effective occupancy detection?
    Back to Questions
    
    The Smart Room Sensor's occupancy detection function has a 110-degree horizontal span and a 32-degree vertical span. Improper placement may limit the area of occupancy detection for the sensor.
    • Large rooms may require more than one sensor to ensure occupancy detection.
    • To maximize area of occupancy detection for the Smart Room Sensor, place the sensor at 5 ft height and halfway on a wall that does not include a doorway.
  - Can I paint the Smart Room Sensor?
    Back to Questions
    
    No, do not paint the Smart Room Sensor. Doing so could affect the monitoring functions of the sensor.
  - Can I hide the S40 Smart Thermostat in a closet and use the Smart Room Sensor as my primary thermostat?
    Back to Questions
    
    No, we do not recommend you hide your S40 Smart Thermostat in a closet. The Smart Room Sensor is a battery powered device that can be located in less than ideal areas. If the temperature difference between the SRS and the S40 is greater than 10 degrees, the system will disregard the data from the Smart Room Sensor and rely on the S40. For this reason, the S40 must still be able to monitor the temperature of the general living space. If the S40 is in a closet buried behind coats, it would be hard for the S40 to accurately monitor the dwelling spaces temperature
  - Is periodic calibration of the Smart Room Sensor needed?
    Back to Questions
    
    No, periodic calibration is not needed.
  - How do I replace a Smart Room Sensor in my home?
    Back to Questions
    
    To replace an already installed device from the Lennox S40 Smart Thermostat, use the following procedure:
    
    1. On the Lennox Home App: Go to Menu > Settings > Smart Devices.
    2. Select the Smart Room Sensor to replace and follow the screen prompts.
    3. If you wish to reuse the device you replaced in the future, perform a factory reset on the device.
  - Can I change the name of my Smart Room Sensor?
    Back to Questions
    
    1. Open the Lennox Home App. Go to System Settings and tap on the Smart Room Sensor.
    2. You can tap on Sensor Name and type in your desired Smart Room Sensor name.
  - Can I pair multiple Smart Room Sensors at the same time?
    Back to Questions
    
    No, only one Smart Room Sensor can be paired at a time.
  - Will it work as a zone sensor with the Lennox Smart Zoning System (iHarmony)?
    Back to Questions
    
    No, the Smart Room Sensor cannot work with any type of zoning system, including the Lennox Smart Zoning System.
  - How will remote room averaging work within a Lennox Smart Zoning System (iHarmony)?
    Back to Questions
    
    The Smart Room Sensor will not work with a Lennox Smart Zoning System.
  - What is the warranty of the Smart Room Sensor?
    Back to Questions
    
    The Smart Room Sensor has a 10-Year Warranty.
  - Can I use the Smart Room Sensor with a zoned HVAC system?
    Back to Questions
    
    No. The Smart Room Sensor is not compatible with a zoned system such as the Lennox Smart Zoning System (iHarmony). The Smart Room Sensors work only with the S40. Any temperature balancing that occurs between the S40 and the Smart Room Sensors may be in direct conflict with calls for air from the zone sensors and their respective zones. The Smart Room Sensors are appropriate for households that do not have zoning equipment installed. The Smart Room Sensor is compatible with dual and single split HVAC systems that are not zoned.
- - How does the Smart Room Sensor work?
    Back to Questions
    
    The Lennox Smart Room Sensor helps you dial in a more perfect environment by providing accurate temperature and humidity readings to the S40 Smart Thermostat and telling it how to balance temperatures across the rooms where the sensor is placed.
    
    The Lennox Smart Room Sensor isn't just about perfectly balanced comfort; it can also help you save energy. When a room is in use, occupancy sensors keep your set temperature. When it's not, the sensors revert to a more energy efficient temperature.
  - How does the logic for the Smart Room Sensor work?
    Back to Questions
    
    The Smart Room Sensors will work with the S40 Smart Thermostat to average the temperature between them and use that average as system temperature. For example, the S40 reads 72 degrees while one Smart Room Sensor in the office reads 76 and another Smart Room Sensor in the living room reads 70 degrees. It will take an average of the 3 temperatures and in this specific example, it is 73 degrees. The S40 will compare your set point to the average and run your system to meet the call for heating or cooling. That means that while The S40 will try to satisfy the temperature set point where the sensor is placed, another room may become hotter or colder.
  - What is Sensor Temperature Difference Limit?
    Back to Questions
    
    This setting determines the temperature differential limit between the smart room sensor and the S40 thermostat. Set default temperature difference is 7ºF. The system compares the smart room sensor and thermostat temperature difference. If the temperature difference between the smart room and thermostat temperatures is greater than 7ºF then the system determines there is a potential issue with smart room sensor temperature. The system will then raise a warning on the thermostat and will only use the thermostat temperature reading and ignore the smart room sensor reading until the issue is resolved.
    
    You can change the sensor temperature difference limit setting to a range between 2 to 10ºF and can be incremented 1 degree at a time.
  - What information is the Smart Room Sensor collecting?
    Back to Questions
    
    This device collects room temperature, humidity and occupancy status and passes information to the S40 Thermostat. The thermostat uses an algorithm to calculate average room temperature based on room occupancy/temperature sensor input along with the thermostat's built-in sensors.
  - What types of challenges was the sensor designed to overcome, i.e., rooms with little airflow, etc.?
    Back to Questions
    
    Important Notice: The Lennox Smart Room Sensor is not a zoning product and will not solve problems related to HVAC system and home deficiencies including, but not limited to, poor duct work condition and design, incorrect equipment sizing, and/or home insulation and points of air leakage/penetration. What it can do is balance temperatures in various rooms by averaging the temperature between rooms where the sensor is placed and the S40.
    
    Challenges that the sensor can overcome is achieving consistent comfort across several rooms tied to an HVAC system. If a particular room is located on the other end of a floorplan where an S40 presides, then the air in that room may not reach a comfortable temperature when the S40 has reached setpoint. The smart room sensor will mitigate this by driving a longer run cycle on the HVAC system until the system has reached a balanced setpoint between the smart room sensor and the S40.
  - Are the Smart Room Sensors wireless?
    Back to Questions
    
    Yes, the Smart Room Sensor is wireless and communicates via a BLE (Bluetooth Low Energy) Mesh Network.
  - How big is the Smart Room Sensor?
    Back to Questions
    
    The Smart Room Sensor is approximately 3-5/16” long x 2-1/16” wide x 1-1/2” depth.
  - Is the Smart Room Sensor communicating?
    Back to Questions
    
    Yes, the Smart Room Sensor communicates with the S40 via a BLE network.
  - Does the sensor communicate with the S40 via WiFi, Bluetooth, or Z wave?
    Back to Questions
    
    The Smart Room Sensor communicates with the S40 via a proprietary BLE (Bluetooth Low Energy) Mesh Protocol unique to Lennox.
  - Can the sensor be calibrated? Is periodic calibration required?
    Back to Questions
    
    No, the Smart Room Sensor does not need to be calibrated nor is periodic calibration required.
  - How often does the Smart Room Sensor send data?
    Back to Questions
    
    The Smart Room Sensor sends data to the thermostat from 2 to 30 minutes intervals to preserve battery life. The update rate is faster if rapid temperature changes are detected. Otherwise, the average sampling rate is every two minutes, and a transmission rate is every 30 minutes.
  - What is the distance for the occupancy sensing capabilities of the Smart Room Sensor?
    Back to Questions
    
    The maximum unobstructed distance for the occupancy sensing capability is 20-feet and maximum width pattern of 110º at a mounting height of five-feet from the floor.
  - Are there different methods the Smart Room Sensor does room temperature averaging?
    Back to Questions
    
    There are two methods for room averaging using occupancy detection. The following two features can be set using either the thermostat or thermostat app using the system setting screen. From the home screen, go to Menu > Settings > Current Temperature.
    
    Occupancy sensor setting:
    • OFF- When the occupancy feature is turned OFF, the thermostat will always include the sensor in temperature averaging.
    • ON - When the occupancy feature is turned ON, the thermostat will only include the sensor in temperature averaging if the room is occupied.
  - Will the Smart Room Sensors give me precise temperature inside each room they are placed?
    Back to Questions
    
    No, only through installation of a zoning system will you get precise temperature inside each room as you will redirect ductwork to the zones or areas you wish to condition. The Smart Room Sensors will average the temperature between the S40 Smart Thermostat and the rooms you place the sensor in. Some rooms may be colder or hotter to compensate for reaching the more comfortable set point where the Smart Room Sensor is located.
  - Can a specific Smart Room Sensor be assigned to a schedule?
    Back to Questions
    
    No, you cannot assign a specific schedule to a Smart Room Sensor.
  - Is adding Smart Room Sensors the same as zoning?
    Back to Questions
    
    The Smart Room Sensor is NOT a zoning product and will not solve problems related to poor ductwork and incorrect equipment sizing. If you want precise comfort in various rooms in your home, call your Lennox dealer and inquire about Lennox Smart Zoning.
  - How does the Smart Room Sensor work if it is not tied to ductwork?
    Back to Questions
    
    The Smart Room Sensors will work with the S40 Smart Thermostat to average the temperature between them. The S40 will run your system to meet the call for heating or cooling. That means that while The S40 will try to satisfy the temperature set point where the sensor is placed, another room may become hotter or colder.
- - How do I cycle power for troubleshooting?
    Back to Questions
    
    To cycle power on the Smart Room Sensor, remove the sensor batteries and then reinstall them.
  - Can I create my own BLE Mesh network?
    Back to Questions
    
    The first device must be added by your dealer in order to create the BLE network. Afterwards, you can add or remove devices using the Lennox Home App.
  - Can I add or remove Smart Room Sensors on my own?
    Back to Questions
    
    The first smart device must be added by the technician in order to create the BLE network. Afterwards, you can add or remove smart devices using the Lennox Smart Thermostat app.
  - How do I remove a Smart Room Sensor in my home?
    Back to Questions
    
    This procedure can also be used to remove a device from the network that is inoperable.
    
    To remove an already installed device from the Lennox S40 Smart Thermostat, use the following procedure:
    1. On the Lennox Home App: Go to Menu > Settings > Smart Devices.
    2. Select the Smart Room Sensor to remove and follow the screen prompts.
    3. It could take up to two minutes before the Smart Room Sensor is removed from the S40 Smart Thermostat BLE Mesh network.
  - There are some colored lights on my Smart Room Sensor, what do they mean?
    Back to Questions
    
    LED is only on when there is an issue with either signal strength or battery. This is done to conserve battery life of the unit. There are three LED Colors:
    • Red – Battery. A red LED indicates either the battery is low (20%) or the device has not been paired to a BLE network. When the red LED light is off it indicates battery is good.
    • Blue – Signal Strength. A blue LED indicates the signal strength is low or out of range. When the blue LED light is off it indicates signal strength is good.
    • Green – Pairing. A green LED light indicates the unit is in pairing mode.
    
    Note: If there are more than two conditions active simultaneously, for example low battery and weak signal, the LED will alternate back and forth blue and red in one second intervals.

- - Will the Wireless Extender interfere with any other devices, i.e., mobile phones, Alexa/Google Home devices, wireless baby monitors, Bluetooth speakers, etc.?
    Back to Questions
    
    The S40, Smart Remote Sensor, Smart IAQ, & Extender are FCC Certified and will not interfere with other wi-fi or Bluetooth devices.
  - How do I install/wire/connect the extender?
    Back to Questions
    
    1. Download and install the Lennox® Smart Technician App if not already installed on your mobile device.
    
    2. The following procedure is assuming the Lennox® S40 Smart Thermostat has already been commissioned. From the thermostat home screen, go to Menu > Settings > Advanced Settings > View Support Service Control Center and select Connect To Lennox Smart Technician App.
    
    3. Plug the smart device into a power outlet that is between the locations of the smart device and the Lennox® S40 Smart Thermostat.
    
    4. The thermostat will start broadcasting its Thermostat ID.
    
    5. Start the Lennox® Smart Technician App and follow the screen prompts until you reach Service Center .
    
    6. To add a smart device, select Equipment Settings > Add Device.
    
    7. Follow the screen prompts to add the smart device.
    
    8. Confirm that the wireless extender is installed between the affected Smart Room Sensor and the Lennox® S40 Smart Thermostat.
    
    9. Walk the homeowner through on where to find and download the Lennox® Smart Thermostat App. Refer to the Lennox® S40 Smart Thermostat User Guide on how to use the smart device.
  - Does the Wireless Extender packaging contain everything that is needed for install?
    Back to Questions
    
    The box contains main items needed for you to install the Wireless Extender. The Wireless Extender box includes the following:
    
    • One Wireless Extender
    • Installer Quick Start Guide
    • Homeowner Quick Start Guide
    • Warranty Certificate
  - Can I add or remove Wireless Extenders on my own?
    Back to Questions
    
    The first smart device must be added by the technician in order to create the BLE network. Afterwards, you can add or remove smart devices using the Lennox Home App.
  - How many Wireless Extenders can I use?
    Back to Questions
    
    You can attach up to two Wireless Extenders per single S40 Smart Thermostat BLE mesh network. You can attach a total of 6 smart accessories per single S40 Smart Thermostat BLE mesh network.
  - Where do I place my Wireless Extender?
    Back to Questions
    
    If you have a Smart Air Quality Monitor or Smart Room Sensor out of range from your S40 thermostat a blue LED on the device will indicate so and that is where you will need a Wireless Extender.
    
    Plug the smart device into a power outlet that is between the locations of the smart device and the S40 Smart Thermostat. The device is powered by a 120VAC outlet.
  - How far can a Wireless Extender be from the S40 Smart Thermostat?
    Back to Questions
    
    The S40 Smart Thermostat connects with the Smart Room Sensor via proprietary Bluetooth protocol, called a BLE Mesh. The range between the S40 and any smart device is approximately 70 feet. When you need to improve the connection, you will receive an alert for low signal strength. Call your Lennox dealer to install a Lennox Wireless Extender to increase the connection strength.
  - Can I paint the Wireless Extender?
    Back to Questions
    
    No, do not paint the Wireless Extender. Doing so could affect the communicating functions of the extender.
  - Can I create my own BLE (Bluetooth Low Energy) Mesh network?
    Back to Questions
    
    The first device must be added by your dealer in order to create the BLE network. Afterwards, you can add or remove devices using the Lennox Home App.
  - How do I add a Wireless Extender to my home?
    Back to Questions
    
    1. Open the Lennox S40 Smart Thermostat app: Go to Menu.
    2. Under System select Settings.
    3. Under Smart Devices select Add.
  - Can I change the name of my Wireless Extender?
    Back to Questions
    
    1. Open the Lennox Home App. Go to System Settings and tap on the Wireless Extender.
    2. You can tap on Extender Name and type in your desired Wireless Extender name.
  - Can I pair multiple Wireless Extenders at the same time?
    Back to Questions
    
    No, only one Wireless Extender can be paired at a time.
  - How many Wireless Extenders can I have in my home?
    Back to Questions
    
    Up to two wireless extenders can be used per single S40 thermostat. You can attach up to a total of 6 smart accessories to one S40 Smart Thermostat.
  - Is periodic calibration of the Wireless Extender needed?
    Back to Questions
    
    No, periodic calibration is not needed.
  - Is a surge protector or fuse included in the Wireless Extender?
    Back to Questions
    
    The wireless extender includes surge protection in its design.
- - How does the Wireless Extender work?
    Back to Questions
    
    The Lennox Wireless Extender gives you greater range and greater performance. It improves the connection between the S40 Smart Thermostat and technologically advanced accessories, such as the Smart Room Sensor and the Smart Air Quality Monitor, in larger homes or areas with reduced coverage or “dead spots”. This strengthened connection nearly doubles the coverage area and thus enhances reliability, performance, and usability.
  - Is the Wireless Extender a WiFi or Bluetooth extender?
    Back to Questions
    
    This is a BLE (Bluetooth Low Energy) Mesh Network extender. The BLE Mesh is a proprietary protocol used by Lennox. Therefore, you cannot us the Wireless Extender to repeat other Bluetooth or Wifi signals around a home. Conversely, you cannot use any type of extender to increase the signal between the S40 and the smart devices.
  - How big is the Wireless Extender?
    Back to Questions
    
    The Wireless Extender is approximately 3-1/16” long x 2-1/16” wide x 1-5/16” depth.
  - What kind of power does the Wireless Extender run on?
    Back to Questions
    
    The Wireless Extender is powered by 120VAC outlet, it is simple to use, simply plug into wall outlet and connect via BLE mesh to S40 Smart Thermostat.
  - What is the range of the BLE (Bluetooth Low Energy) network)?
    Back to Questions
    
    • Maximum unobstructed range of BLE signal under ideal conditions is 70 feet (21.3 meters). Maximum range could be affected by the number of walls or floor and other obstacles which the signal must penetrate.
    • Maximum unobstructed range of a BLE signal between a sensor and the S40 while using the wireless extender is 120 ft.
  - Which color options are available for the Wireless Extender?
    Back to Questions
    
    The Wireless Extender only comes in one color (white). We do not recommend painting the Wireless Extender. Doing so could affect the monitoring functions of the sensor.
  - Is the Wireless Extender polarity sensitive?
    Back to Questions
    
    No, the Extender is not polarity Sensitive.
- - Does the Wireless Extender contain any 'onboard' diagnostics, i.e. connection status, signal strength, etc.?
    Back to Questions
    
    A blue LED indicates the signal strength is low or out of range. No blue LED light indicates signal strength is good.
    A green LED indicates the unit is in pairing mode.
  - What happens when my Wireless Extender is out of range?
    Back to Questions
    
    A blue LED indicator will blink slowly to indicate that the wireless extender is out of range of the S40.
  - How do I replace a Wireless Extender in my home?
    Back to Questions
    
    To replace an already installed device from the Lennox S40 Smart Thermostat, use the following procedure:
    1. On the Lennox Home App: Go to Menu > Settings > Smart Devices.
    2. Select the Wireless Extender to replace and follow the screen prompts.
    3. If you wish to reuse the device you replaced in the future, perform a factory reset on the device.
  - There are some colored lights on my Wireless Extender, what do they mean?
    Back to Questions
    
    LED is only on when there is an issue with either signal strength or pairing mode. There are two LED Colors:
    
    • Blue – Signal Strength. A blue LED indicates the signal strength is low or out of range. When the blue LED light is off it indicates signal strength is good.
    • Green – Pairing. A green LED light indicates the unit is in pairing mode.
    
    Note: If there are more than two conditions active simultaneously, for example low battery and weak signal, the LED will alternate back and forth blue and red in one second intervals.
  - How do I remove a Wireless Extender in my home?
    Back to Questions
    
    This procedure can also be used to remove a device from the network that is inoperable.
    
    To remove an already installed device from the Lennox S40 Smart Thermostat, use the following procedure:
    1. On the Lennox Home App: Go to Menu > Settings > Smart Devices.
    2. Select the Wireless Extender to remove and follow the screen prompts.
    3. It could take up to two minutes before the Wireless Extender is removed from the S40 Smart Thermostat BLE Mesh network.
  - How do I cycle power for troubleshooting?
    Back to Questions
    
    To cycle power on the Wireless Extender, unplug the device from the wall outlet and then reinstall.