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LENNOX S40 Smart Thermostat User Guide

NOTE: Even though the thermostat supports half degree settings in Celsius, Currently, users can pair only one home that is listed in their Lennox User  
Amazon Alexa only supports whole degrees. The first temperature  
adjustment that gets made will set the temperature to a whole  
degree, if it was not already.  
Account with Amazon Alexa. In the situation where there are multiple homes  
associated with the Lennox thermostat account, users will not have a choice  
to choose the home for Amazon Alexa. Users can view the homes on the  
Heat and Cool (Auto-Changeover)  
Additional Help  
Amazon Alexa controls the thermostat a bit differently when in Heat / Cool  
mode. In Heat / Cool mode, the system can automatically switch between  
heating and cooling as needed.  
For instance, if Amazon Alexa is commanded to set the hallway temperature  
to 70 degrees, the thermostat will use 70 degrees as a midpoint temperature,  
setting the Heat set point to 69 and Cool set point to 72. Amazon Alexa  
will confirm the request by saying, “Hallway is in Auto mode, aiming for 70  
degrees.”  
Google Home and Assistant  
Download the Google Home app from Google Play or the App Store™ on a  
compatible mobile device and then follow the on-screen steps to finish setup.  
Once the homeowner has added the thermostat to their Google Home app,  
the homeowner should install and enable the Google Assistant app (Android  
and IOS) to enable voice control.  
Amazon Alexa can change the thermostat mode (heat only, cool only, etc.)  
via voice commands. It is recommended to rename the system to a call name  
other than “System” or “system” during setup (such as “My System”).  
NOTE: Google Assistant app may be already installed on Android devices.  
Perfect Temp and Schedule Mode Functions  
The following are examples of voice commands to a system named “My  
System”:  
Raising or lowering the temperature is not supported when using a schedule  
or Perfect Temp feature. When attempting to change the temperature when  
in either reference mode, Google Assistant will respond with mode not  
supported.  
» Heat - “Alexa, set My System to HEAT.”  
» Cool - “Alexa, set My System to COOL.”  
» Auto - “Alexa, set My System to AUTO.”  
» ECO - “Alexa, set My System to ECO.”  
» OFF - “Alexa, set My System to OFF.”  
Heat / Cool Mode (Auto-Changeover)  
Although Google Assistant supports heat / cool mode temperature  
The following voice commands must be used for systems that remain as  
adjustments, it will do so only by maintaining the currently established  
temperature ranged. For example, if the heat set point is 60ºF and the cooling  
set point is 80ºF at the thermostat itself, then a temperature range of 20  
degrees has been established. Any adjustment using Google Assistant, either  
through the app or by voice will maintain a 20 degree range differential as  
well. Let’s say the homeowner changes their heat set point to 65ºF. Now the  
thermostat will indicate the heating is at 65ºF and cooling is set at 85ºF.  
Adjusting the cooling set point will result in the range being maintained as  
well. In the Google Home app, the thermostat image will only display the  
approximate center temperature between the current heating and cooling set  
points. In this example it would display 75ºF.  
“System” or “system”:  
» Heat - “Alexa, set Thermostat to HEAT.”  
» Cool - “Alexa, set Thermostat to COOL.”  
» Auto - “Alexa, set Thermostat to AUTO.”  
» ECO - “Alexa, set Thermostat to ECO.”  
» OFF - “Alexa, set Thermostat to OFF.”  
If the thermostat is in Away or Smart Away mode, any Amazon Alexa  
commands to change thermostat temperature will not be successful.  
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GeneralDetails
NameLENNOX S40 Smart Thermostat User Guide
MakeLennox
LanguageEnglish
FiletypePDF (Download)
File size1.3 MB
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LENNOX S40 Smart Thermostat User Guide