Lennox S40 Installation And Setup Guide

3
Shipping and Packing List
Table 1. Packing List
Quantity Description
1 Lennox S40 smart thermostat
1 Sub-base
4 Mounting screws (#6 x 1.25 SMS pan head Phillips)
4 Wall anchors (alligator anged wall anchors)
1 Quick Start guide
1 Warranty certicate
Thermostat External Components
External Component Locations
Ambient Sensor
Reboot
(Pin Hole)
Micro USB with
Cap Cover
BOTTOM VIEW
FRONT VIEW
BACK VIEW
Humidity
Sensor
BA
CK
V
IE
W
Sub-Base
Figure 1. Thermostat External Components
Reboot Button, Micro USB Connection and Built-in Sensors
The following diagrams in this section illustrates the basic Lennox control
wiring for all compatible components.
• Proximity Sensor - Detects a person approaching the Thermostat. If the
Thermostat is in screen saver mode and the proximity sensor setting is set
to ON (factory default is OFF), the proximity sensor takes the Thermostat out
of screen saver mode automatically and returns to the home screen when
someone approaches. This feature can be disabled by going to Menu >
Setting > Display.
• Ambient Sensor - This sensor determines ambient light levels around
the thermostat. If screen brightness is set to AUTO, the thermostat will
automatically adjust screen brightness based on surrounding room light. To
set to AUTO, go to Menu > Settings > Display and enable Auto Brightness.
• Humidity sensor - This is the intake location for the built-in humidity sensor.
Do not block the intake location. The indoor humidity percentage is displayed
(enabled by default) on the home screen. The humidity percentage display
on the home screen can be disabled by going to Menu > Setting > Display.
• Temperature Sensor - This determines the room temperature.
• Reboot button - Using a paper clip, press and hold this button for
approximately six (6) seconds to reboot the Thermostat. No settings are lost
using this procedure.
• Micro USB connector with cover - For future use.
Lennox Smart Applications
Lennox
®
Smart Thermostat App (Homeowner)
• The free Thermostat app is available for use on iOS and Android™ devices.
• Control cooling/heating temperatures, fan operation, set programs and set
Away mode for multiple locations.
• Controls individual zone settings if system is equipped with the optional
Lennox Zoning Control System.
• Controls PureAir S Air Purication System
• Controls fresh air dampers and ERV/HRV when using an Equipment Interface
Module (EIM).
Lennox
®
Smart Technician App (Installer)
• The free Lennox Smart Technician App allows the installer to commission
and service the system on most iOS and Android™ devices.
• Remotely turn the system on and off during setup.

Lennox S40 Specifications

General

Brand	Lennox
Model	S40
Category	Thermostat
Language	English