Connecting The Thermostat To The Home Wi-Fi; Multiple S40 Thermostats In The Home; Wi-Fi Considerations; Supported Wi-Fi Network Types - Lennox S40 User Manual

Connecting the Thermostat to the Home Wi-Fi

Multiple S40 Thermostats in the Home

If your home will have multiple S40 thermostats then they all MUST be on the
same 2.4GHz Home Wi-Fi network in order to communicate with each other.

Wi-Fi Considerations

• This thermostat cannot connect to a home wireless router that uses more
than 32 characters in the wireless access point name (visible or hidden).
• This thermostat will support up to a 63 character Wi-Fi password. Passwords
cannot contain blank spaces or % symbol.
• If the home Wi-Fi connection is unsecured, then Wi-Fi security MUST be
enabled. Consult your router documentation on how to enable Wi-Fi security
• This thermostat supports the following Wi-Fi security protocols: WEP, WPA,
WPA2 and WPA3.
• Never use a home guest account.
• Always use a secure connection physically located in the home where the
thermostat is located.
• Lennox S40 and S30 Smart Thermostats are not designed to communicate
with each other even when on the same network.

Supported Wi-Fi Network Types

Supported wireless network types are listed as follows:
Table 1. Supported Wi-Fi Standards
Standard
Compatible.
802.11b
Compatible.
802.11g
Compatible.
802.11n (Wi-Fi 4)
Compatible.
802.11ac (Wi-Fi 5)
NOTE: MIMO is not supported.
Not directly supported. Wi-Fi 6 routers are 100%
backwards compatible with Wi-Fi 5 and older Wi-Fi
802.11ax (Wi-Fi 6)
devices.
NOTE: MIMO is not supported.
Description

Connecting to a Visible Home Wi-Fi Access Point

1. From the thermostat's home screen, go to Menu > Settings > Wi-Fi.
2. Slide the option to the ON position to enable Wi-Fi.
3. Select Not Connected to display a list of available access points.
4. Select your home Wi-Fi network.
5. Enter the home Wi-Fi network password and select join to continue.
NOTE: If you wish to see the characters you are typing, check show password.
6. Verify the Thermostat Connectivity Status indicator appears as illustrated
in "Figure 2. Thermostat Connectivity Status". All connect icons will need to
display green check marks across all connections.
Lennox S40
Smart Thermostat
Figure 2. Thermostat Connectivity Status

Connecting to a Hidden Wi-Fi Access Point

1. From the thermostat's home screen, go to Menu > Settings > Wi-Fi.
2. Slide the option to the ON position to enable Wi-Fi.
3. Wi-Fi network indicator will show not connected. Select "not connected".
4. Scroll down and select other.
5. The "enter new network information" screen will appear. Enter the name
of the hidden network.
6. Select your Wi-Fi access point Security. Options are: none, WEP, WPA,
WPA2 and WPA3.
7. Once a security type is selected, a password field will appear. Enter your
Wi-Fi password to connect to your home Wi-Fi network.
NOTE: If you wish to see the characters you are typing, check show password.
8. Select join.
9. Verify the Thermostat Connectivity Status indicator appears as illustrated
in "Figure 2. Thermostat Connectivity Status". All connect icons will need to
display green check marks across all connection
6
Internet Service
Router Server
Provider