Lennox S40 User Manual

2
Table of Contents
Features............................................... 4
Display Features ........................................... 4
External Component Locations .................... 4
Reboot Button, Micro USB Connection and
Built-in Sensors ............................................ 4
Comfort Features .......................................... 4
Optional Accessories .................................... 5
Download Lennox Smart
Applications ........................................ 5
Lennox® S40 Smart Thermostat App ........... 5
Additional Support ........................................ 5
Setup and Customization Process ... 6
Setup Process .............................................. 6
Customization Process ................................. 6
Set Up the S40 Smart Thermostat..... 6
Customize the S40 Smart
Thermostat .......................................... 8
Create a New User Account ............. 12
Manually Adding S40 Smart
Thermostat to Account .................... 14
Tips for Connecting the
Thermostat to the Home Wi-Fi ........ 14
Manually Connect to Wi-Fi ............... 15
Electromagnetic Interference Causing
Poor Connectivity ....................................... 15
Wi-Fi Terminology ....................................... 15
Received Signal Strength Indicator (RSSI) 15
Thermostat Home Screen Details ... 16
Temperature Settings ................................. 17
Current Outdoor Temperature and Weather
Forecast ...................................................... 17
Time and Date Display ............................... 17
Humidity Display ......................................... 17
Away ........................................................... 17
Temp ........................................................... 17
Status ......................................................... 17
My Home .................................................... 17
Thermostats and Zones ............................ 18
Lennox Smart Room Sensor ..................... 18
Lennox Smart Air Quality Monitor ............. 18
Lennox Wireless Extender (BLE) .............. 18
PureAir S ................................................... 18
Home and Status Screens Icon
Descriptions ...................................... 19
Menu .................................................. 24
General ....................................................... 24
Notications .............................................. 24
User Account ............................................. 24
Display Settings ........................................ 24
Lennox Dealer Support Access ................. 25
System ....................................................... 25
Mode ......................................................... 25
Schedule (Single Zone) ............................ 25
Schedules (Zoning) ................................... 27
Fan (On, Auto and Circulate) .................... 27
Settings ............................................. 28
System Info ................................................. 28
Settings ...................................................... 28
Wi-Fi .......................................................... 28
Away ......................................................... 28
Manual Away .................................. 28
Smart Away .................................... 29
Current Temperature ................................. 30
Feels Like™ ................................... 30
Using Smart Room Sensors ........... 30
Sleep Mode .................................... 30
Fan ............................................................ 32
Allergen Defender .......................... 32
Circulation Timer Adjustment ......... 32
Heat / Cool ................................................ 32
Perfect Temperature ....................... 32
Wider Set-Point Range .................. 32
Auxiliary Heat ................................. 32
Safety Protection ............................ 33
Humidity .................................................... 33
Humidity Control ............................. 33
Humidication Control Center ................... 33
Dehumidication Control Center .... 33
No Dehumidication Accessory In-
stalled ............................................. 33
Humidify + Dehumidify Settings ..... 34
Dehumidication Accessory
Installed .......................................... 35
Smart Zoning System ............................... 35
Heating / Cooling Changeover ....... 35
Cooling Operation ......................... 35

Lennox S40 Specifications

General

Brand	Lennox
Model	S40
Category	Thermostat
Language	English