Lennox iComfort Wi-Fi Flex Installation instructions

CONTROLS
WI-FI THERMOSTAT
iComfort Wi-Fi®Flex Thermostat
Bulletin No. 210725
December 2015
The iComfort Wi-Fi®Flex Thermostat recognizes
and connects conventional heating/cooling
products to automatically congure and control
the system (based on user-specied settings)
for the highest level of comfort, performance and
efciency.
Additional indoor air quality comfort products
(PureAir™ Air Purication System, Healthy
Climate® Humidiers, Healthy Climate®Energy/
Heat Recovery Ventilators, Healthy Climate®
Germicidal Lights) can be added to the system for
a complete total-comfort system.
A simple easy-to-use touchscreen allows complete
system conguration. Scheduled maintenance
alerts, system warnings and troubleshooting are
also displayed on thermostat screen.
One-Touch Away Mode - A quick and easy way to
set the cooling and heating setpoints while away.
Weather-On-Demand - Live up-to-date weather
data and ve-day forecasts.
Easy to read 7 in. color screen (measured
diagonally).
Dimensions (H x W x D) - 5 x 7-1/2 x 1 in.
Installer setup screens allow quick and simple
system conguration without a manual.
Installer can also run tests on complete system or
individual components for easy maintenance and
troubleshooting.
Serial communications bus (RSBus), with less
wiring than a conventional heating/cooling system.
Uses 4-wire, 18-gauge standard thermostat wiring.
Subbase (with terminal strip) and all necessary
mounting hardware is furnished for easy
installation.
The Equipment Interface Module (EIM) allows
the iComfort Wi-Fi® Flex Thermostat to be used
with most conventional HVAC systems (with up to
3 stages heating and 2 stages cooling).
See page 2 for System Components.
See page 21 for available system congurations.
PRODUCT SPECIFICATIONS
Wi-Fi remote monitoring and
adjustment
through a home
wireless network
for desktop PCs,
laptops and apps
for smartphones
or tablets.
Service
alerts and
reminders
sent via text
message or e-mail.
Contents
Control Ordering Information . . . . . . . . . . . . . 20
EIM Connections . . . . . . . . . . . . . . . . . . . 21
Features - Equipment Interface Module (EIM) . . . . 20
Features - iComfort Wi-Fi® Flex Thermostat . . . . . 6
Homeowner Remote Access . . . . . . . . . . . . . 3
Installer Setup. . . . . . . . . . . . . . . . . . . . .12
System Components . . . . . . . . . . . . . . . . . 2
User Settings . . . . . . . . . . . . . . . . . . . . . 6
ICOMFORT®WI-FI FLEX THERMOSTAT

iComfort Wi-Fi®Flex Thermostat / Page 2
SYSTEM COMPONENTS
Conventional
Air Conditione
r
or
Heat Pump
Conventional
Furnace
Conventional
Wiring
Outdoor Air
Temperature Sensor
(Available as
an optional accessory
for conventional
outdoor units)
Optional
Discharge Air
Temperature Senso
r
Conventional
Air Handler
RSBus
iComfort Wi-Fi®
Flex Thermostat
Equipment
Interface
Module (EIM)
LEGEND
RSBus
Conventional Wiring
Di
Tem
p
iComfort Wi-Fi® Flex
Web and Mobile Apps
i
C
om
f
ort Wi-F
i
®
Fl
e
Web and Mobile Ap
ATTENTION - The Lennox iComfort Wi-Fi® Flex
Thermostat with Equipment Interface Module (EIM) will
work with most 24VAC furnaces, air conditioners, air
handlers and heat pumps (up to 3 stages of heat and 2
stages of cooling).

iComfort Wi-Fi®Flex Thermostat / Page 3
HOMEOWNER REMOTE ACCESS
HOMEOWNER LOGIN
The Login screen is accessible to the homeowner at:
www.myiComfort.com.
Thermostat must be registered before logging into the
Homeowner Remote Access Website (see page 10).
Wi-Fi remote temperature monitoring and adjustment through a home wireless
network via desktop PCs, laptops, and apps for smartphones or tablets.
After logging in and creating a prole (My Prole),
the homeowner can enter specic information for the
iComfort Wi-Fi® Thermostat (single or multiple systems),
set up multiple homes (My System).
The homeowner can control all iComfort Wi-Fi®
Thermostats on the network remotely through the
Website Dashboard.
Multiple iComfort Wi-Fi®Thermostat Control
• One home - one iComfort Wi-Fi®Thermostat
• Two or more homes - one iComfort Wi-Fi®Thermostat
each
• One home - multiple iComfort Wi-Fi®Thermostats
• Two or more homes - multiple iComfort Wi-Fi®
Thermostats

iComfort Wi-Fi®Flex Thermostat / Page 4
HOMEOWNER REMOTE ACCESS
WEBSITE DASHBOARD
Remotely control any iComfort Wi-Fi®Thermostat on a
home wireless network.
Accessible to the homeowner at:
www.myiComfort.com.
• Tabs at the top for different locations (Home 1, Home
2, etc.)
• Large display of current indoor temperature
• Current Indoor Relative Humidity
• Set Temperature
• Adjust Cool-To or Heat-To temperature setpoints
(Up/Down Arrow Buttons)
• Program ON Tab
• Program Setting
• Summer
• Winter
• Fall/Spring
• Save Energy
• Custom
Homeowner can select Programs pre-set on thermostat
but cannot remotely adjust individual settings within
Programs.
• Program OFF Tab (manual settings)
• Mode Settings
• Cool Only
• Heat Only
• Heat or Cool
• Off
• Emergency Heat (heat pump)
• Fan Settings
• Auto
• On
• Circulate
• Away Mode Button
• Alerts / Reminders Tab
• Current Alerts with Date and Time
• Service Information Tab
• Dealer Information
• Change Dealer Button
• System Tab
• System Name and information about HVAC
equipment
• ON/OFF
• Skins tab
• Upload Image
• Current Weather Conditions
• Local 5-Day Weather Forecast
• Show/Hide 5-Day Weather Forecast
MY ACCOUNT SCREEN
• My Prole
• Name
• Phone Number
• Mobile Phone Number
• Primary E-mail (change e-mail)
• Password (change password)
• My System
• Home Name (default home checkbox)
• Street Address, City, State, Zip/Postal Code
• Alerts and Reminder Preferences
• Home Details (show/hide)
• Building size, number of oors, number of
occupants, building style, number of bedrooms,
age of building, utility company
• My Dealer
• Change Dealer

iComfort Wi-Fi®Flex Thermostat / Page 5
HOMEOWNER REMOTE ACCESS
MOBILE APPS
The free iComfort®app is available for use
on iPhone®, iPad®, Android™ and Windows®
8 devices.
Control cooling/heating temperatures, fan
operation, set programs and set Away mode
for multiple locations.
Apple, the Apple logo, iPhone and iPad are trademarks of Apple
Inc. registered in the US and other countries.
Android is a trademark of Google Inc. Use of this trademark is
subject to Google permission.
Windows is a registered trademark of Microsoft Corporation in
the United States and other countries.
Available on the
Download from
Windows Store
Download from
Windows Store
CUSTOM SCREEN SAVER (SKINS)
Any high quality image (JPG format only, 800 x 480, 300 dpi for best resolution) can be uploaded to www.
myiComfort.com to change the appearance of the thermostat screen to match any color, pattern, design, or
décor.
Turn on Screen Saver on the iComfort Wi-Fi®Thermostat
On the thermostat, touch the Arrow Button on the home screen to access the Features Screen, touch the
Display Settings Button, touch the Screen Saver Button and select Skins. The image will appear after 30
seconds of inactivity. Touch the screen at any time to access the Home Screen controls.

iComfort Wi-Fi®Flex Thermostat / Page 6
HOME SCREEN (Thermostat ON)
Temperature Settings
• Large display of current indoor temperature (°F or °C)
In Celsius mode only the Home Screen displays Celsius.
All other thermostat settings displayed in Fahrenheit.
• Current cooling setpoint temperature Button (cool-to)
• Current heating setpoint temperature Button (heat-to)
• Raise / Lower temperature setting Arrows (up / down
arrows) to set cooling or heating setpoints indenitely
Touch either setpoint temperature button to display up /
down temperature adjustment arrows.
Touching either Temperature Setting Arrows (up / down
arrows) displays the Program Hold Screen. Preset 1,
2, 8, 24 hours or custom setting (date and time with
Keyboard Tool). Set and hold the temperature for a
preset or custom time period until the next time period
setting. Cancel Button on Home Screen cancels the
held setting.
Both setpoint temperatures are displayed if System is set
to Heat or Cool mode.
System Status Button
• Manual Settings
• Cool Only
• Heat Only
• Heat or Cool
• Off (system is OFF)
• Emergency Heat (if air handler or dual fuel system)
• Programs
• Select or edit a program (See page 9)
Touch to select system operating mode menu.
Humidity Display
• Displays current indoor relative humidity
FEATURES - ICOMFORT WI-FI® FLEX THERMOSTAT
USER SETTINGS System Status Display (animated)
• System is Heating
• System is Cooling
• System is Cooling and Dehumidifying
• System is Dehumidifying
• System is Waiting (time delay)
Fan Button (animated)
• On
• Auto
• Circulate
Current Outdoor Temperature
• Displays current outdoor temperature in °F or °C
The default outdoor temperature is supplied by the
Outdoor Air Temperature Sensor or the Wi-Fi data
connection (user selectable on the thermostat). The
outdoor sensor is furnished as standard with iComfort®-
enabled outdoor units, optional for conventional units.
Weather Forecast Display
• Displays current weather forecast
Touch to display 5-Day Forecast screen.
Arrow Button
Touch to display Features screen (See page 7).
Enter Away Mode Button
Touch to display Away Mode screen (See page 12).
Wi-Fi Indicator
• Displays if Wi-Fi is enabled
Touch to display Wi-Fi-Settings Screen (See page 10).
Time and Date Display
• Displays current date and time
Touch to display Clock Settings screen (See page 8).
Service Alerts
• A red Alert indicates that service is required for a
major system component as soon as possible
• A yellow Alert indicates required maintenance (lter
replacement, humidier pad replacement, UV light
replacement, PureAir™ Air Purication System
servicing and Maintenance)
Touch to display Alerts Screen (See page 9).

iComfort Wi-Fi®Flex Thermostat / Page 7
FEATURES - ICOMFORT WI-FI® FLEX THERMOSTAT
USER SETTINGS
HOME SCREEN (Thermostat ON) (Continued)
Help Button
• Displays help information
Touch to display Help information. Touch the question
mark over each feature for additional information.
Logo Button
• Switches to Installer Mode (See page 18)
Touch and hold for 3 seconds to display Installer Setup
screen (See page 18).
Lock Icon
• Indicates partially locked (allows temperature
adjustment up or down for a selectable time) or fully
locked (no adjustment)
To unlock, touch and hold the lock icon for 5-6 seconds.
FEATURES SCREEN
Touch any Button to display desired screen.
• Edit Program Button (see page 9)
• System Settings Button (see page 7)
• Display Settings Button (see page 8)
• Alerts Button (see page 9)
• Reminders Button (see page 9)
• Service Button (see page 12)
• Home Icon (lower-right, returns to Home Screen)
SYSTEM SETTINGS SCREEN
Humidier Settings Buttons
• Humidier is OFF
• Humidier is ON (15 to 45% RH - default is 40%)
De-Humidier Settings Buttons
• Dehumidify
• OFF (settings not shown)
• MEDIUM
• HIGH
• ON setting (40 to 85% RH - default is 50%)
Select the humidity level you want inside the home.
• Humidity Display is OFF/ON (on Home Screen)

iComfort Wi-Fi®Flex Thermostat / Page 8
FEATURES - ICOMFORT WI-FI® FLEX THERMOSTAT
USER SETTINGS
CLOCK SETTINGS SCREEN
• Set current Time and Date
• Time Format (12 or 24 Hour)
• Daylight Savings Time (enabled/disabled)
DISPLAY SETTINGS SCREEN
Background Theme Button
• Cobalt
• Cotton
• Carbon
Temperature Scale Button
• Fahrenheit or Celsius
Screen Saver Button
• ON/OFF
• Skins
Screen Lockout Button
• Unlocked
• Partially
• Locked
Language Button
• English
• Français
• Español
Outdoor Temperature Display Button
• Off
• Internet
• Sensor
Optional Outdoor Air Temperature Sensor is required and
must be ordered extra for “Sensor” Display setting.
Backlight Intensity Button
• Adjustable 20, 40, 60, 80, 100% (default 80%)
Clean Screen Button
• 30 Second Countdown timer without affecting settings

iComfort Wi-Fi®Flex Thermostat / Page 9
FEATURES - ICOMFORT WI-FI® FLEX THERMOSTAT
USER SETTINGS
WEATHER SCREEN
Displays local 5-Day Weather Forecast
Wi-Fi must be enabled to access weather forecast
screen.
EDIT PROGRAMS SCREEN
Select Programs Button
• Summer
• Winter
• Spring/Fall
• Save Energy
• Custom
• Program will follow these settings for days selected
Touch and hold button to change Program name.
Select Days Button
• All 7 Days
• Week/Weekend (Mon-Fri. and Sat-Sun.)
• Individual Days (Monday, Tuesday, etc.)
Program Setting Buttons
• Time (Adjustable in 15 minute increments)
• Cool-To (Adjustable in 1° increments)
• Heat-To (Adjustable in 1° increments)
• Fan Mode (On, Auto, Circulate)
Touch and hold any time button to disable that period.
ALERTS SCREEN
Displays Alert History
• Alert Code
• Date and Time Alert occurred
• System Reports
Set Alert Button
• Last 24 Hours
• Last 30 Days
• Last 12 Months
REMINDERS SCREEN
Reminder Buttons
• Replace Filter 1
• Replace Filter 2
• Replace Humidier Pad
• Replace UV Bulb
• Maintenance Reminder Required
• PureAir™ Maintenance Reminder Required
• Settings
• Disabled
• 3, 6, 12, 24 Months or Custom
Custom Button accesses Clock Settings Screen to input
custom date and time settings.

iComfort Wi-Fi®Flex Thermostat / Page 10
FEATURES - ICOMFORT WI-FI® FLEX THERMOSTAT
USER SETTINGS
WI-FI SETTINGS SCREEN
• Connection Status Button
• Wi-Fi Enabled Button (enabled/disabled)
• Network Settings Button (showing current network
connection)
• Thermostat Registration Button (E-Mail)
• Firmware Update Button (auto/off)
Touch Network Settings Button to access Network
Setting Screen.
Wi-Fi must be enabled for Registration and Firmware
Updates.
CONNECTION STATUS SCREEN
A graphical representation of the home network showing
the connection status from the thermostat to the Internet
to the Lennox server.
• Router Button
• Internet Status Indicator
• Server Button
iComfort Wi-Fi Flex Thermostat supports wireless bands
802.11b, 802.11c and 802.11n
Touch Router Button to access Network Setting Screen
if not connected.
Touch Server Button to access Thermostat
Registration if not registered.
NOTE - A red “X” means that there is an issue with a
connection point that must be resolved.
THERMOSTAT REGISTRATION
Registration is completed on the thermostat after
establishing a wireless connection.
• Enter homeowner’s e-mail address
• Enter the system description
• Touch Register Button
• A Registration e-mail is sent to the homeowner to
access the Homeowner Remote Access website and
setup the homeowner’s account (see page 3)