Lennox iComfort E30 Assembly instructions

Disponible en español en www.lennoxPros.com.
507686-06 6/2020
Copyright 2020©Lennox Industries Inc.
Dallas, Texas, USA
iComfort®E30
Smart Thermostat
Installation and Setup Guide

2
Table of Contents
Shipping and Packing List............................................................................3
Operating and Storage Environment, Electrical and Dimensions............3
Smart Hub External Components, Button, LEDs, Jumpers, Terminals
.............................................................................3
External Component Locations............................................................................... 3
Push Button Function.............................................................................................. 3
LED Indicators......................................................................................................... 3
Unit Type Jumpers .................................................................................................. 5
Heat Stage Jumper Positions.................................................................................. 5
Terminals and Wiring Specications ....................................................................... 6
Sensor Wiring.......................................................................................................... 7
HD Display External Components ...............................................................7
Reducing Electrical Noise ............................................................................7
Application Wiring.........................................................................................8
Installation Recommendations ..................................................................11
Smart Hub Installation ................................................................................11
HD Display Installation................................................................................12
Installation............................................................................................................. 12
Mounting Display to Subbase ............................................................................... 13
Commissioning or Service (Using the Mobile Setup Application) .........13
Mobile Device Operating System Requirements .................................................. 13
Establishing a Direct Wireless Connection to the Smart Hub ............................... 13
Service .................................................................................................................. 14
Alternative Method ................................................................................................ 14
Multiple Smart Hub(s) - Group ID.......................................................................... 15
Restarting Smart Hub............................................................................................ 15
Commissioning (Using the HD Display)....................................................15
Boot-up Screen ..................................................................................................... 15
Apple HomeKit Wi-Fi Accessory Conguration..................................................... 15
Dealer Info............................................................................................................. 16
General Information .............................................................................................. 16
Equipment Found Screen ..................................................................................... 16
Non-Communicating Equipment ........................................................................... 16
Reminders............................................................................................................. 16
Commissioning Completion .................................................................................. 17
Equipment Parameters ......................................................................................... 18
Tests...................................................................................................................... 27
Diagnostics............................................................................................................ 28
Installation Report ................................................................................................. 28
Information ............................................................................................................ 28
 ..........................................................................28
Dehumidication Setting Options.......................................................................... 28
Overcooling........................................................................................................... 29
Dehumidication Set Point.................................................................................... 29
Advanced Dehumidication Descriptions.............................................................. 29
Ventilation (ERV, HRV and Fresh Air Damper) ..........................................29
Ventilation Rates ................................................................................................... 29
Energy Recovery Ventilator (ERV)........................................................................ 29
Heat Recovery Ventilator (HRV) ........................................................................... 29
Fresh Air Damper.................................................................................................. 29
Zoning Application................................................................................................. 30
Operation of Fresh Air Dampers with Environmental Overrides ........................... 30
Wiring .................................................................................................................... 30
Ventilation Control Modes ..................................................................................... 30
Wi-Fi Connection .........................................................................................31
Performance Reports..................................................................................32
Replacement Parts ......................................................................................32
Mobile Applications.....................................................................................32
iComfort Thermostat App (Homeowner) ............................................................... 32
iComfort Mobile Setup App (Installer) ................................................................... 32
.................................................................................................33
Alert Code Types................................................................................................... 33
Soft Disable........................................................................................................... 33
Service Notication Codes.................................................................................... 33
Alert Codes ........................................................................................................... 34
Installation Checklist...................................................................................40
LennoxPros Dealer Dashboard..................................................................41
Service Dashboard Search Screen....................................................................... 41
Customer Results Screen ..................................................................................... 41
Customer Details Screen ...................................................................................... 41
Index .............................................................................................................44

3
Shipping and Packing List
Quantity Description
1 iComfort® E30 smart thermostat which includes a Smart Hub and HD Display
6 Mounting screws (#6 X 1.25” pan head) - Display requires 4 and smart hub 2.
6Wall anchors (alligator anged solid wall anchors)
1 Installation and setup guide
1 User guide
1 Checklist
1Warranty certicate
IMPORTANT
The iComfort E30 smart thermostat CAN NOT be connected as a
communicating device to indoor or outdoor units. Only conventional 24VAC
wiring to indoor and outdoor units is supported.
NOTE: Due to Lennox’ ongoing commitment to quality, features and options
are subject to change without notice and without incurring liability.
Operating and Storage Environment, Electrical and Dimensions
• Operating Temperature is 32°F to 104°F (0 to 40°C)
• Shipping and storage temperature range is -4°F to 140°F (-20°C to 60°C)
• Operating humidity range is 10% to 90% non-condensing at 104°F (40°C)
• Storage humidity range is 5% to 95% non-condensing at 104°F (40°C)
• Smart Hub Power Input: 24VAC, 1AMP at 60Hz.
• Smart Hub Power Output to HD Display: 12VDC
• Dimensions (H x W x D):
»HD Display with subbase attached: 7-1/4” x 5” x 1” (184 x 122.5 x 23
mm)
»Smart Hub: 11-1/2” x 7-1/8” x 1-7/8” (292 mm x 181 mm x 48 mm) -
antenna length is 7-1/4” (184 mm)
Smart Hub External Components, Button, LEDs, Jumpers,
Terminals and Wiring Specications
External Component Locations
E30 Smart Hub
(Hinged Cover Removed)
Power
and Data Connections
24VAC Control Wiring Connections
to Indoor Unit
System Status LED
Mobile Device
Commissioning Status LED
Communication
Status LED
Unit Type and
Heat Stages Jumpers Antenna
Outdoor and Discharge
Air Sensors
Smart Hub mount
screw location
Reboot and Commissioning
Button
USB Port
Hinged Cover
(Removable)
W1 W2 W3 GY2Y1 C DS RHOB
UNIT
TYPE
HEAT
STAGES
OUTDOOR
AIR
SENSOR
DISCHARGE
AIR
SENSOR
HP
IFC
AHC
0 1 2 3
+
-
COMMBUS
A B
ACC1 ACC2
NOTE THE TERMINAL ARRANGMENT ON THE
NOTE THE TERMINAL ARRANGMENT ON THE
SMART HUB 3.0
SMART HUB 3.0
Figure 1. Smart Hub External Components
Push Button Function
The smart hub push button switch has two primarily functions.
• Rebooting: Press and hold the button for ve seconds to reboot the smart
hub.
• Commissioning: Quickly press and release the button to start the process
of creating a direct network connection between the smart hub and mobile
device running the iComfort Mobile Setup application.
The push button has a LED associated with it that indicates the status of the
smart hub commissioning state (see “Table 1. System and Commissioning
LED Indicators” on page 4).
LED Indicators
When alarms are present, you may review alarm(s) listed either on the
homeowner notication screen or the menu / settings > advanced settings >
dealer control center > screen.

4
Alert codes which require manual clearing can only be done under the dealer
control center > notication screen.
Table 1. System and Commissioning LED Indicators
LED
Color Status Description
W1 W2 W3 GY2Y1
C
DS RHOB
UNIT
TYPE
HEAT
STAGES
OUTDOOR
AIR
SENSOR
DISCHARGE
AIR
SENSOR
HP
IFC
AHC
0 1 2 3
LEFT LED -
SYSTEM
STATUS
RIGHT LED -
COMMISSIONING
STATUS
+
-
COMMBUS
A B
ACC1 ACC2
System Status LED
Green System is
normal
A solid green LED indi-
cates no system errors
are detected. System
operating as designed.
Red HVAC Fault
System has critical alert
which needs installer
attention.
Amber Wi-Fi Error
Blinking amber LED
indicates either Wi-Fi is
not connected, no Wi-Fi is
within range, or and Wi-Fi
hardware error. Could
also indicate intermittent
Wi-Fi connection.
Magenta T-Stat Error
Blinking magenta LED
indicates HD display not
connected.
Cyan Hardware
Error
Blinking cyan LED indi-
cates E30 internal com-
munication error.
Commissioning Status LED
Blue System is
normal
No mobile device is
directly connected using
Wi-Fi to the smart hub.
Green
Blinking green LED indicates the com-
missioning button has been activated and
the smart hub is waiting for a connection
with a mobile device.
Green A solid green LED indicates a mobile
device is connected to the smart hub.
Table 1. System and Commissioning LED Indicators
LED
Color Status Description
If multiple errors are present, the system status LED will display each active
condition for one second on and one second o󰀨.
The system will continue to cycle through all active conditions.
System status errors are displayed in the following priority: HVAC alerts,
thermostats and then Wi-Fi.
Table 2. Communication Error Troubleshooting
(HD Display to Smart Hub)
Possible Connection Issues E30 Smart Hub - System Status
LED
One communication wire at either the
HD Display or smart hub A or B termi-
nals is disconnected.
Flashing Magenta LED
Both communication wires – at either
the HD Display or smart hub A or B
terminals are disconnected.
Flashing Magenta LED
Power wires at either the smart hub or
HD Display 12V+ and 12V- terminals
are disconnected.
Flashing Magenta LED.
If terminals are connected correctly,
then check HD Display. HD Display not
be secured correctly to subbase.
Flashing Magenta LED.
HD Display screen may be either
blank or a message indicating
iComfort cannot communicate with
the equipment.

5
W1 W2 W3 G Y2 Y1 C DS R H O B
UNIT
TYPE
HEAT
STAGES
OUTDOOR
AIR
SENSOR
DISCHARGE
AIR
SENSOR
HP
IFC
AHC
0 1 2 3
+
-
COMMBUS
AB
ACC1 ACC2
System Status LED
Mobile Device
Commissioning Status LED
E30 Smart Hub with Cover Removed
Figure 2. Smart Hub LED Indicators
Unit Type Jumpers
Set the unit type jumper for the type of indoor unit being used (see “Figure
1. Smart Hub External Components” on page 3 and “Table 3. Unit Type
Jumpers Positions”). The factory default setting is IFC. If jumper is missing
from header, alarm 130 is activated.
Table 3. Unit Type Jumpers Positions
Jumper
Position Indoor Unit Outdoor Unit
HP DO NOT USE
IFC
Conventional furnace,
hydronic baseboard heating
and hot water coils Conventional heat pump or air
conditioner
AHC Conventional Air Handler
HP IFC AHC
DO NOT
USE
Heat Stage Jumper Positions
The heat staging Jumper must be set for the number of stages of electric heat
(air handler) or the number of stage of gas heat (furnace) and stages of heat
pump. Using the heat stages jumper (see gure 3 and table 8).
The factory default setting is position 2. If jumper is missing from header, alarm
130 is activated.
0 1 2 3
Figure 3. Heat Stage Jumper Positions
Table 4. Heat Stage Jumpers
Label
(Position)
Air Handler Heat
Stages
Furnace Heat
Stages Heat Pump Stages
Number of Electric Heat Stages Stage Per- centage Number of Gas Stages Stage Per- centage Number of Compressors Stages Stage Per- centage
0No Elec-
tric Heat 0 1 100% 1 100%
11 100% 1 100% 1 100%
2
(default) 250%, 100% 270%, 100% 2 70%, 100%
33
33.5%,
66.5%,
100%
270%,
100% 2 70%, 100%
If jumper is missing, setting defaults to single-stage. Changing jumper posi-
tion after power-up requires recommission for the change to be recognized.
IMPORTANT
Ifany jumperswereset incorrectlyAFTER commissioningwas completed,then
reposition jumpers to correct conguration. Re-running the commissioning
procedure will be required at the thermostat or with the mobile app.

6

The following is the wiring specication requirements for installation of this system.
• Maximum total length of all connections combined is 1500 feet (457 meters).
• Maximum length between components is 300 feet (90 meters).
Table 5. Terminal Designations and Wiring Recommendations
Terminal
Designation Description Thermostat
Wiring Typical Wiring
ACC1 Accessory 1 and
2 (typically can be
used for 1 or 2 speed
ventilators and fresh
air damper)
18AWG unshielded Smart Hub
ACC1 ACC2
18AWG
unshielded
18 or 22AWG
shielded
-12V+12V A B
HD Display
Subbase
+
-
COMMBUS
A B
ACC2
+12VDC output 18AWG unshielded
-12VDC return
ACommunications
bus A
18 - 22AWG shielded
(recommended)
BCommunications
bus B
IMPORTANT
Use 1-pair, 18AWG unshielded thermostat cable (eld-provided) for power
terminals (R, C, 12+ AND 12-). Highly recommend using 1-pair 22AWG
shielded thermostat cable for communications terminals ( A and B) which will
help eliminate any noise interference.

Table 6. Conventional Terminals (24VAC)
Label Description Function
W1 First-stage heat output (rst-stage gas heat output when congured as furnace
(IFC) and rst-stage electric heat output when congured as air handler (AHC).
W2 Second-stage heat output (second-stage gas heat output when congured as IFC
and second-stage electric heat output when congured as AHC.
W3 Third-stage heat output (third-stage electric heat output when congured as air
handler)
G
Indoor blower control (continuous fan) (monitoring only). G input may be connected
to IAQ devices such as humidier, Lennox Ventilation Control System and Heat or
Energy Recovery Ventilators to turn the indoor blower on and o󰀨.
Table 6. Conventional Terminals (24VAC)
Label Description Function
Y2 Second-stage compressor output.
Y1 First-stage compressor output.
DS 24VAC dehumidication signal output. The DS terminal is powered when there is
not a dehumidication call.
CClass II, 24VAC
transformer common Both R and C terminals are used to receive power from
the indoor unit and capable of providing the power to the
Smart hub and all the associated loads. The R power
input uses a 3A fuse (Lennox part number 25J49.
RClass II. 24VAC
transformer power
H24VAC humidier signal output.
OHeat pump reversing
valve (24VAC = cool)
Used as reversing valve output for heat pumps. The E30
uses a single-pole dual throw relay to generate O and
B signals. Normally the O output is open and B output
at 24VAC during heating calls. During cooling calls O is
24VAC and B open. With relay de-energized 24VAC is
present on O terminal.
When power o󰀨/ or control reset, 24VAC power shall not
be present on the O terminal.
BHeat pump reversing
valve (24 VAC = heat)

7
Sensor Wiring
The following diagrams in this section illustrates the basic Lennox control
wiring for all compatible components.
Discharge Air Temperature Sensor (DATS)
Installation of discharge air temperature sensor (DATS) (88K38) must comply
with the following requirements:
• Installed downstream of the heat exchanger or electric heat elements.
• It must be placed in free airow, where other accessories (such as humidiers,
UV lights, etc.) will not interfere with its accuracy.
• Wiring distance between the integrated furnace and air handler controls or
damper control module and the discharge air sensor must not exceed 10 feet
(3 meters) when wired with 18# AWG thermostat wire.
• DATS is highly recommended for all systems that include a variable capacity
outdoor unit in order to provided more precise dehumidication operation.
Outdoor Air Temperature Sensor (OATS)
The optional outdoor air (temperature) sensor (OATS) (X2658) wiring distance
to the iComfort E30 should not exceed 150 feet (45 meters) when wired with
minimum 22 #AWG (recommend 18 #AWG) dedicated 2-conductor thermostat
cable. Installation of OATS must comply with the following requirements:
• Sensor wiring must be run to avoid touching or being close to high voltage
wiring and light ballast.
• Choose a protected outdoor location away from direct sunlight or other heat
sources (usually on the north side of the building).
• Ensure that water will neither collect on, nor wash over the sensor.
• Do not locate the sensor near driveways or similar heat-absorbing masses
which may reect stored heat energy onto the sensor and send inaccurate
information to the thermostat.
• Locate the sensor away from attic and so󰀩t vents, or furnace venting pipes.
• Do not locate the sensor directly above an air conditioner or heat pump.
HD Display External Components
• Proximity sensor - Detects a person approaching the HD Display. If the HD
Display is in screen saver mode and the proximity sensor setting is enabled
(factory default is ON), the proximity sensor takes the HD Display 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.
• 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.
• Reboot button - Press and hold this button for approximately six (6) seconds
to reboot the HD display. No settings are lost using this procedure.
• MicroSD card slot - For future use.
• Micro USB connector - For future use.
Proximity and Ambient Light Sensors
microSD slot
micro USB port
power button
humidity sensor
air intake
humidity sensor
air discharge
temperatur sensor
Subbase attached
Figure 4. HD Display Components
Reducing Electrical Noise
• Use wire nuts to bundle the unused wires at each end of the cable.
A single wire should then be connected to the indoor unit end of the
wire bundle and attached to the “C” terminals as shown in “Figure
5. Thermostat Wiring - E30 Smart Hub to HD Display Subbase
(Electrical Noise Termination Consideration)” on page 8.
• Keep all wiring as far away from the house electrical wiring and large
electrical appliances as possible. Recommended minimal distance is 15 feet
(5 meters).
NOTE: If the HD Display is removed from the subbase, the HD Display will
shut down and will not be able to communicate with the system.

8
W1 W2 W3 GY2Y1 C DS RHOB
UNIT
TYPE
HEAT
STAGES
OUTDOOR
AIR
SENSOR
DISCHARGE
AIR
SENSOR
HP
IFC
AHC
0 1 2 3
ACC2ACC1
Unused
wires
Single wire from bundle
to Smart Hub 24VAC
Terminal C
E30 Smart Hub
HD Display Subbase
(Front View)
+12V
AB
-12V
+
AB
-
COMMBUS
Figure 5. Thermostat Wiring - E30 Smart Hub to HD Display Subbase
(Electrical Noise Termination Consideration)
OUTDOOR UNIT
SMART HUB
SUB-BASE
+12V AB-12V
Figure 6. Thermostat Wiring - E30 Smart Hub to HCWB3
Application Wiring
Diagrams are typical low voltage conventional wiring connections.
E30 Smart Hub
Set “Unit Type” to IFC for furnace
and AHC for air handler.
Set “Heat Stages” to number of either gas or
electric heat stages.
Not all furnaces have Y1, Y2 and W2 connections.
Wire E30 Smart Hub direct to air conditioner unit
in those cases.
Remove jumper between R and W2 if present.
Not removing may cause erroneous alert code 125
to appear.
Figure 7. Conventional Furnace or Air Hander with Conventional
Air Conditioner
E30 Smart Hub
Set “Unit Type” to IFC for furnace
and AHC for air handler.
Set “Heat Stages” to number of
either gas or electric heat stages.
Not all furnaces have Y1, Y2 and O
connections. Wire E30 Smart Hub
direct to heat pump unit in those cases.
Remove jumper between R and W2 if present.
Not removing may cause erroneous alert
code 125 to appear.
Figure 8. Conventional Furnace or Air Hander with
Conventional Heat Pump

9
3
3
E30 SMART HUB
Set “Unit Type” to IFC for furnace.
Set “Heat Stages” to number of gas
heat stages.
Remove jumper between R and W2
if present. Not removing may cause
erroneous alert code 125 to appear.
NOTE: Defrost temperating is provided
by kit 67M41. Tempering thermostat-
cycles furnace on at 80ºF (26.7ºC) and
off at 90ºF (32.2ºC).
Not all furnaces have Y1, Y2 and O
connections. Wire E30 Smart Hub direct
to heat pump unit in those cases.
Figure 9. Dual-Fuel - Conventional Furnace with Conventional Heat
Pump (Defrost Tempering Kit Installed)
E30 Smart Hub
Terminals O, DS, Y1 and
Y2 used only on some air
handlers.
Cut on-board links R-DS
and R-0.
Set “Unit Type” to IFC
(furnace). This will allow
baseboard heating (water
coil heat) to come up to
the Aquastat thermostat’s
temperature set point.
Once the temperature set
point is reached, the
indoor fan will start.
Figure 10. Hydronic Baseboard Heating with Conventional Air Handler
Remove jumper between R and W2
if present. Not removing may
cause erroneous alert code 125
to appear.
Aquastat provided by installer.
Set air handler continuous fan
speed to desired heating CFM
E30 Smart Hub
Set E30 unit type to IFC to
prevent fan operation during
baseboard heating or until
Aquastat closes on hot water
coil heat.
NOTE: Terminals O, DS, Y1 and Y2 used
only on some air handlers.
NOTE: Cut on-board links R-DS and R-O
on Lennox communicating air handler
control.
Figure 11. Hot Water Coil Heat with Aquastat Blower Control with Con-
ventional Air Handler
E30 Smart Hub
Set “Unit Type” to IFC for furnace
and AHC for air handler.
Remove jumper between R and W2 if present.
Not removing may cause erroneous alert code 125
to appear.
EDA Humiditrol can only be installed on matched
systems with variable speed or CBX27 indoor units.
Figure 12. 
with Conventional Indoor (Variable Speed) and Outdoor Units

10
E30 Smart Hub
Set “Unit Type” to IFC for
furnace and AHC for air
handler.
Remove jumper between R and W2
if present. Not removing may
cause erroneous alert code 125
to appear.
Figure 13. 
Unit
E30 Smart Hub
Set “Unit Type” to IFC for furnace
and AHC for air handler.
Remove jumper between R and W2 if present.
Not removing may cause erroneous alert code 125
to appear.
Figure 14. LVCS with Conventional Indoor and Outdoor Units
ACC1 ACC2
Non-Communicating
Indoor Unit
iComfort E30
LOW
ON
RED
YEL
GRN
HI
COM
NO
NC
BLK
HRV/ERV
Terminal Block
Wire Jumper required between ON and RED terminals.
ACC1 is always low-stage for single- and two-stage Z
ventilators.
Wiring connections between E30 and non-
communicating indoor unit will be application specific.
-
COM BUS
A B
+
+12V
B A
-12V
Figure 15. iComfort E30 to either ERV or HRV
-
COM BUS
A B
ACC1 ACC2
Non-Communicating
Indoor Unit
iComfort E30
+12V
B A
HD Display
Subbase
Wire required between ACC 1 and R terminals.
Wiring connections between E30 and non-
communicating indoor unit will be application specific.
COM
CLOSE
Fresh Air Damper
2-Wire Control
(Normally Open)
Wire required between COM and C terminals.
+
-12V
Figure 16. iComfort E30 to Fresh Air Damper

11
Installation Recommendations
WARNING
Improper installation, adjustment, alteration, service or maintenance can
cause property damage, personal injury or loss of life.
Installation and service must be performed by a licensed professional HVAC
installer (or equivalent) or a service agency.
Before beginning installation, note the type of equipment, number of stages,
and any accessories being installed.
Do
• Read this entire document, noting which procedures pertain to your specic
equipment and system requirements.
• Make sure that all wiring conforms to local and national building and electrical
codes and ordinances.
Do Not
• Install on voltages higher than 30VAC.
• Exceed 300 feet (91 meters) run when using 18AWG or 22AWG
thermostat wire or larger (see “Table 5. Terminal Designations and Wiring
Recommendations” on page 6 for further details.
• Allow power load from any thermostat connection to be more than 1 AMP.
Smart Hub Installation
IMPORTANT
Do not install smart hub in location where direct exposure to condensation or
dripping water is possible.
DO NOT install smart hub on indoor unit.
1. Things to consider when installing the smart hub:
• Install near the indoor unit such that there is a direct path to the
approximate location of the home Wi-Fi access point (the signal is not
blocked by the indoor unit or duct work, for example).
• Can be attached to a vertical surface such as a wall stud or roof truss
web, or to a horizontal surface such as a oor or ceiling joist, or a roof
rafter.
• Smart hub antenna should be positioned such that it is roughly vertical,
no matter the orientation of the smart hub, itself.
• DO NOT install the smart hub on the indoor unit, duct work, or other
equipment that could induce vibration in the smart hub.
• DO NOT install the smart hub on or near large metal objects. This
could adversely a󰀨ect the range and directional coverage of the smart
hub Wi-Fi signal.
• If the smart hub MUST be installed on a metal object, orientate the
antenna perpendicular to the metal surface.
• In all cases, the smart hub antenna orientation may need to be adjusted
to obtain best Wi-Fi results.
2. Use the following procedure outlined in “Figure 17. Smart Hub Installation”
on page 11.
3. For low voltage wiring connections use diagrams in section titled
“Application Wiring” on page 8.
IMPORTANT
Do not install smart hub in location were direct exposure to condensation or
dripping water is possible.
1/4”
A
B
D
W1 W2 W3 GY2Y1
C
DS RHOB
UNIT
TYPE
HEAT
STAGES
OUTDOOR
AIR
SENSOR
DISCHARGE
AIR
SENSOR
HP
IFC
AHC
0 1 2 3
Front
(Hinged Cover Removed)
Rear
Keyhole
Use the Smart Hub as a template to mark the desired mounting locations on the wall or stud.
CAUTION: Do not overtighten lower mounting
screw. Doing so may damage the Smart Hub.
Secure Smart Hub to
wall using field-provided
fasteners.
Strip 1/4” insulation from
end of each control wire.
Make connections to the Smart Hub using included wiring
diagrams in this instruction.
Smart Hub to Display Wall Mount
Connectors
W1 W2 W3 GY2Y1 C DS RHOB
UNIT
TYPE
HEAT
STAGES
OUTDOOR
AIR
SENSOR
DISCHARGE
AIR
SENSOR
HP
IFC
AHC
0 1 2 3
W1W2 W3 GY2Y1 C DS RHOB
UNIT
TYPE
HEAT
STAGES
OUTDOOR
AIR
SENSOR
DISCHARGE
AIR
SENSOR
HP
IFC
AHC
012 3
W1W2 W3 GY2Y1
C
DS RHOB
UNIT
TYPE
HEAT
STAGES
OUTDOOR
AIR
SENSOR
DISCHARGE
AIR
SENSOR
HP
IFC
AHC
012 3
Smart Hub may be installed either horizontally or
vertically as illustrated.
Smart Hub illustrated with
hinged cover removed.
24VAC Equipment Connections
C
+
-
COMMBUS
A B
ACC1 ACC2
+
-
COMMBUS
A B
ACC1 ACC2
+
-
COMMBUS
A B
ACC1 ACC2
+
-
COMMBUS
A B
ACC1 ACC2
Figure 17. Smart Hub Installation

12
HD Display Installation
Installation
Use the following procedure for installation of the HD Display where existing
thermostat wiring does not exist:
1. Unpack the HD Display and subbase.
2. Detached subbase from HD Display body.
IMPORTANT
Be careful not to bend the four connection pins protruding from the back side
of the HD Display. DO NOT lay display down on side with pins. Damage pins
could cause power and communication issues between the HD display and
smart hub.
3. Determine the best location to install HD Display. Ideal location should be
located away from outside wall, direct sunlight or discharge air vents.
4. Cut or drill a small hole for thermostat wiring.
3/8” (10 mm)
Diameter Hole
5. Pull about three inches of thermostat wire through the opening and remove
the outer thermostat wire jacket.
Seal wire hole in wall to prevent
cold or hot air from affecting temperature
sensor in display
IMPORTANT
Seal wire hole in wall to prevent cold or hot air from a󰀨ecting temperature
sensor in HD Display.
6. Strip 1/4” (7 mm) insulation from end of each wire.
1/4”
7. Use a level to align the subbase on wall horizontally.
8. Use subbase as a template to mark the desired mounting hole locations
on the wall.
NOTE: Make sure the UP arrow on the subbase is pointing up.
Use the subbase as a template to
mark the desired mounting hole
locations on the wall.
HD Display Subbase
(Rear View)
Install subbase with arrow
pointing up.
9. Drill 3/16” (5 mm) holes at marked locations on the wall for anchors. Then
insert wall anchors into holes until ush with the wall.
Drill Holes Insert in hole until ush with wall

13
WARNING
DO NOT over-tighten mounting screws. Doing so my distort the subbase
plastic housing and cause connection issues when installed the HD display.
10. Secure subbase to wall with provided #6 x 1.25” pan head screws (4).
11. Connect thermostat wiring to subbase screw terminals.
Mounting Display to Subbase
Install HD Display with UP arrow pointing
up when attaching to subbase.
Rear View of HD Display
1. Hold the HD Display by the edges, line it up with the subbase (horizontal
position), and move the HD Display toward the subbase.
2. Center the cavity on the back of the display over the subbase.
3. Gently press on the edges of the HD Display until you hear the mounting
snaps engage. Be careful not to apply force directly on the glass.
NOTE: Once the HD Display is connected, it may take up to 45 seconds for it
to power up.
4. To remove the HD Display from the subbase, grasp the left and right edges
of the HD Display and gently pull towards yourself.
NOTE: If the HD Display is removed from the subbase base, the HD Display
will shut down and will not be able to communicate with the system.
System can be controlled from mobile devices or consumer/dealer
web portals once registration has been completed.
5. Do not remove the label covering the HD Display screen until after power
is applied to the system.
Commissioning or Service (Using the Mobile Setup
Application)
This application tool is used by dealers to commission a iComfort E30 smart
thermostat using a Wi-Fi enabled mobile device.
A temporary smart hub local network provides a means for a mobile device
using the iComfort Mobile Setup application to directly communicate with the
smart hub.
NOTE: The iComfort Mobile Setup application running on a mobile device
cannot connect to the smart hub through the Internet or home Wi-Fi
network.
To use the iComfort Mobile Setup app, the mobile device must be:
• Wi-Fi capable
• Located in the home near the smart hub
NOTE: A router with Bonjour capabilities is required for this function. Check the
router features if the smart hub does not connect. Apple Bonjour®is an
implementation of Zero-conguration networking (Zeroconf), a group
of technologies that includes service discovery, address assignment,
and host name resolution.
Mobile Device Operating System Requirements
The iComfort Mobile Setup application is available for both IOS 6.0 and higher
(App Store) and Android 4.1 and higher (Google Play).
Establishing a Direct Wireless Connection to the Smart Hub
IMPORTANT
If the connection between the iComfort Mobile Setup application and smart
hub is idle for three (3) minutes, the smart hub will auto-disconnect from the
mobile device. Repeat procedures to reconnect.
1. Download and install the iComfort Mobile Setup application.
2. Apply power to the system. The rst screen to appear after boot-up is the
Apple HomeKit commissioning screen. Cancel that screen for now.
NOTE: At this point, it is recommended that when using the iComfort Mobile
Setup application to commission the system, remove the HD Display
from the subbase before starting.

14
NOTE: Once commissioning is completed you may reattach the HD Display
to the subbase.
3. Go to the smart hub and press the commissioning button located on the
side of the unit.
4. The commissioning status LED will start blinking green for two minutes.
During this time the smart hub will broadcast its Wi-Fi identier (SSID).
5. Go to your mobile device’s Wi-Fi connection tool and locate the smart
hub Wi-Fi broadcast identier. A typical example of a identier (SSID) is
DIRECT-XY12-3456.
NOTE: Refer to your mobile device’s owners manual on how to use your Wi-Fi
Connection tool.
6. Connect to the smart hub by using the last eight digits of the smart hub
SSID as the password. In this example, it would be XY123456).
7. Once the mobile device is connected to the smart hub, the commissioning
Status LED will turn solid green.
8. Start the iComfort Mobile Setup application and make sure you are
connected to the correct smart hub by checking the serial number.
9. Touch the remote-in tab on the iComfort Mobile Setup application home
screen. This will take you to the commissioning screen.
10. You can use the information provided in “Commissioning or Service
(Using the Mobile Setup Application)” on page 13 to complete the
commissioning process using the iComfort Mobile Setup application.
11. If the system has not been commissioned it will go to commissioning
screen. If the system has already been commissioned it will go to dealer
control center.
12. Once the commissioning is completed, exit the iComfort Mobile Setup
application.
13. Go to the mobile device’s Wi-Fi tool and manually disconnect from the
smart hub.
14. Once disconnected, the smart hub commissioning LED turns to a solid
blue.
15. Reinstall the HD Display on the subbase.
Service
To use iComfort Mobile Setup application as a service tool, the commissioning
of the system must have already been completed.
1. Download and install the iComfort Mobile Setup application if not already
installed.
2. Go to the smart hub and press the commissioning button once.
3. The LED will start blinking green for two minutes. During this time the
smart hub will broadcast its Wi-Fi identier (SSID).
4. If this is the rst time connecting to the target smart hub then go to your
mobile device’s Wi-Fi connection tool and locate the smart hub Wi-Fi
broadcast identier. A typical example of a identier (SSID) is DIRECT-
XY12-3456.
5. If your mobile device had already connected previously to the target smart
hub, then touch the applicable smart hub SSID on the list and skip to step
7.
NOTE: Refer to your mobile device’s owners manual on how to use your Wi-Fi
Connection tool.
6. Connect to the smart hub by using the last eight digits of the smart hub
SSID as the password (XY123456) for example.
7. Once connected to the mobile device the smart hub commissioning LED
will turn solid green.
8. Start the iComfort Mobile Setup application and make sure you are
connected to the correct smart hub by checking the serial number.
9. Touch the remote-in tab on the iComfort Mobile Setup application home
screen.
10. If the system has not been commissioned it will launch the commissioning
screen. If the system has already been commissioned it will go to dealer
control center.
11. Once servicing is completed, exit the iComfort Mobile Setup application.
12. Go to the mobile device’s Wi-Fi tool and manually disconnect from the
smart hub.
13. Once disconnected the smart hub LED will change to a solid blue.
Alternative Method
From the home screen, go to menu > settings > advanced settings > pair
smart hub to iComfort dealer mobile application selection. It will auto connect
to dealer application and start you at the dealer control center screen. The
following screen will appear and show the status of the connection. Once
connected the screen will automatically disappear.

15
view dealer dashboard
restart
pair Smart Hub to icomfort dealer mobile app
advanced settings
wi- local
smart away on
o
auto
Feels Like
fan
heat & cool
humidity
iHarmony zoning
notications
general
display
account
settings
home info
advanced settin
gs
wi-
lo
c
a
l
s
mar
t
a
Feels
L
f
an
h
eat &
h
umid
i
Harm
o
noti

c
a
gener
a
d
ispla
y
a
cc
ou
nt
s
ett
i
ngs
h
ome inf
o
i
vi
ew
d
d
e
a
l
le
r
d
da
h
sh
b
bo
a
r
d
d
aw
w
ay
y
L
i
ke
e
c
o
oo
o
l
i
ty
y
o
ny
y
z
o
on
a
t
i
io
n
s
al
y
Connect to the Smart Hub from
the dealer iComfort mobile app
now broadcasting...
stop
Figure 18. Pairing
Multiple Smart Hub(s) - Group ID
Multiple smart hubs in a home can be assigned to a group (up to nine groups
with up to ve (5) smart hubs in each group). All smart hubs in a group can
communicate with other smart hubs in the same group over the home Wi-Fi
network.
Default Group ID 1. Range is 1 to 9.
NOTE: If a smart hub is set to Group 0, then there is no connectivity with
another smart hub.
Group IDs can be changed by going to menu > settings > advanced settings
> view > dealer control center > equipment > smart hub.
Restarting Smart Hub
Pressing the smart hub button for more than ve seconds will reboot the smart
hub.
Commissioning (Using the HD Display)
The following procedures are written for commissioning the system using the
HD display interface.
When power is applied the system will use the smart hub congured equipment
settings and factory defaults. All non-communicating equipment must be added
in the “add non-communication equipment” screen.
Boot-up Screen
When power is applied to the system, the HD Display will display a welcome
screen.
If there is an issue with communication between any component attached to
the thermostat, a critical alert message will appear on the screen. The alert
message will provide detail information concerning the possible cause. Once
the issue is corrected and power is restored to the system the rst screen in
the initial setup sequence will appear.
IMPORTANT
Sometimes there is a communication delay between the HD Display and
smart hub during initial boot-up which will result in the reference message
being display. Please wait up to one minute to see if the communication delay
is resolved.
Below is an example of a communication error message.
IComfort cannot communicate with the equipment
If problem persists, please contact your iComfort dealer at
1-800-555-8888
alert
IComfort is unable to connect to the Smart Hub device
For additional support, contact Lennox at
1-800-9-LENNOX or visit www.lennox.com/support
Figure 19. Communication Error Message
Apple HomeKit Wi-Fi Accessory Conguration
A pop-up screen will appears providing instructions on how to connect the
thermostat to the home Wi-Fi network using an Apple IOS device. If you wish
to use this method to congure the unit for Wi-Fi and Apple HomeKit, then refer
to the provided user guide for additional instructions.
Otherwise, select cancel to proceed with the thermostat commissioning
procedures. There is an option to perform this task later on at the homeowners
convenience.
NOTE: This procedure can only be accomplished using the homeowner’s
Apple mobile IOS device.

16
Dealer Info
IMPORTANT
The thermostat is only accessible via the Dealer Dashboard after the
dealership’s main phone number or company name is added during
thermostat commissioning. See “LennoxPros Dealer Dashboard” on page
41 for further details.
This screen in the commissioning sequence is the dealer information screen
where the dealer ID and/or phone number can be added. Once the system
is connected to the Internet, the remaining information will be populated
automatically by the Lennox server based on the dealer name or phone
number entered. All information can be entered manually if desired however.
Information that can be manually entered is name, email website, dealer
address which includes address 1, address 2, city, state and zip/postal code.
Once completed touch continue.
Dealer Info Notication Pop-Up Screen
If either the Dealer ID or phone number is NOT provided, a notication screen
will appear. The notication screen will provide information on the limitation
imposed on the system if this information is not provided. Touch no to return
to the previous screen to complete the information requested or touch yes to
continue.
General Information
On this screen general information needs to be veried or changed. Touch
any item to change its contents. A pop-up screen will appear that will allow the
information to be added or changed.
Information required:
1. Select desired language (ENGLISH, FRANÇAIS or ESPAÑOL).
2. Select country / region.
3. Select time and date which includes time, date, time zone and daylight
savings time (ON/OFF).
4. Temperature unit (Fahrenheit or Celsius).
5. Once completed touch continue.
Equipment Found Screen
This screen will display the smart hub equipment settings. Here is where
24VAC equipment will need to be added (air conditioner, heat pump,
humidiers, dehumidiers and ventilation equipment), by selecting the add
non-communicating equipment.
Depending on whether the smart hub is congured for air handler or furnace
operations, the name of each option will appear as either EIM-Furnace or EIM-
Air Handler.
Non-Communicating Equipment
When selecting the non-communicating (24VAC) equipment icon a screen will
appear listing equipment that can be added. When selecting an applicable
component, a green check will appear next to the item.
NOTE: A temporary dialog box will appear indicating: Updating - Wait while
we check for dependencies.
NOTE: This is where an outdoor unit type only is selected. Selections are one
or two-stage heat pumps or air conditioners. Outdoor unit capacity will
also have to be set. Other equipment that can be added are humidiers
and dehumidiers. Other non-communicating equipment that can be
added are:
»Humidiers
»Dehumidiers
»Humiditrol
»Auxiliary Dehumidier
»Fresh Air Damper
»1 or 2 Speed ERV (energy recovery ventilation)
»2 or 2 Speed HRV (heat recovery ventilation)
NOTE: Once completed touch done which will display the equipment found
screen. There the additional non-communicating equipment will now
be displayed along with the iComfort equipment.
Once completed touch continue.
Reminders
This screen allows you to set reminders as either disabled or 3, 6, 12 or 24
months and also custom by specic date. The other options on this screen is to
trigger the reminder event either by calendar or actual system run-time.
Reminders may be set for Replace lter 1, Replace lter 2, Replace UV bulb,
Replace humidier pad, Ventilation maintenance and Ventilation lter.
Once a reminder is set for a specic item, touch done to return to the previous
screen. An “expires on date” will appear next to the item just set.

17
Commissioning Completion
Once commissioning is completed, the system will leave you at the Dealer
Control Center. You can either touch exit to go to the main screen or perform
any function listed in the various categories displayed.
Dealer Control Center
This menu provides access to the dealer for performing various functions as listed below:
dealer
control center
equipment
tests
notifications
information
diagnostics
exit
Use to make changes to equipment settings and add or remove
24VAC equipment or accessories. In addition the reset all equipment
option is available. This will allow the installer to reset all
equipment and reconfigure.
Use to display
system notifications
Use to run test on
system components
Use to run
diagnostics on
system components
Use to display
system information
Exit to Home
screen.
To navigate back to the dealer control center,
touch on the Dave Lennox icon when available
on the top left-hand side of the screen.
<
<To navigate back to the previous screen, touch
on the left arrow when available.
“Previous Screen
Name”
installation
report
Use to display
installation results.
Note - Report is not
available until after
exiting the dealer
control center following
commissioning.
Return to the dealer
control center from the
home screen to view
the installation report.
Figure 20. Dealer Control Center

18
Equipment Parameters
Selections listed in this section are dependent on system hardware conguration. Not all options will be available.
NOTE: When changing the default settings for any parameter, there is a possibility that it will aect the settings for another parameter. If this happens, a pop-up
message will be displayed listing the other aected parameters and their new automatically set values.
The following is a complete list of all possible parameters under System. Parameters actually available are dependent on the smart hub settings.
Table 7. Smart Hub Parameters
Parameter
(In alphabetical
order)
Description
About
This screen provides information concerning language supported, equipment type name, control software revision, model, control mode number, control serial number,
control hardware revision, protocol revision number, device product level, 24VAC average power consumption, 24VAC peak power consumption, compatible devices
list, application code memory size and micro-controller part number.
Auto Changeover
- Humidif.
Deadband
Prevents the Humidication and Dehumidication settings from being closer together than 5% or greater than 10% (Dead-band).
Range is 5 to 10%. Default is 5%. Adjustments are in increments of 1%.
Auto Changeover -
Temp Deadband
Prevents the Heating and Cooling from being set closer together than 3ºF (1.67°C) or greater than 9ºF (5.0°C) (Dead- band).
Range is 3 to 9°F (1.67 to 5.0°C). Default is 3°F (1.67°C). Adjustments are in increments of 1°F (0.56°C).
Auto

Overcooling
Threshold
Range is 0 - 10%. Default is 4%. Adjustments are in increments of 1%. This value can automatically be a󰀨ected by adjusting other parameters. One example would be
when enabling Max Dehumidication Overcooling.
Balance Point Control
If system is set up as dual fuel or heat pump with electric heat and a outdoor temperature sensor connected to smart hub, the low and high balance point settings will appear. The balance points
feature requires that a sensed outdoor temperature is provided to the thermostat. The outdoor ambient temperature can be read from a eld-installed outdoor temperature sensor (X2658).
When balance point control is ENABLED, the low and high balance point elds will be turned “ON” and show RED. A message will be displayed asking you to review the low and high balance
point settings and save all RED settings. Highlighted elds in RED must be saved to allow exit from that screen.
Options are enabled or disabled. Default is disabled. When enabled, both low and high balance points can be set.
High Balance Point
This setting is used to prevent the furnace or electric heat from heating the structure. (Alert 19 - Minor - Notication only - The outdoor temperature is higher than the level where the furnace or
electric heat is programmed to heat the home.)
Range is -17 to 75°F (-27.22 to 23.89°C). Default is 50°F (10.0°C). Adjustments are in increments of 1°F (0.56°C).
Low Balance Point
Setting used to prevent the heat pump from heating the structure. (Alert 18 - Minor - Notication only - The outdoor temperature is below the level where the heat pump is programmed to heat the
home).
Range is -20 to 72°F (-28.89 to 22.22°C). Default is 25°F (-3.89°C). Adjustments are in increments of 1°F (0.56°C).
Cooling Mode
Options are Normal and Comfort. Default is Normal. When changing to Comfort Mode, several parameters are automatically modied for optimal system operations.
The changed parameters are listed on the screen when set to Comfort.
Normal - This setting cools the home to the desired temperature setting. Once second-stage is activated by timer or di󰀨erential, it will not stage down to rst-stage until
the next cooling cycle demand.
Comfort - This is when the system could automatically stage up or down based on the current load demand.
Cooling Discomfort
Threshold
Default is ON. The purpose of this algorithm when set to ON is to detect systems with faults which are causing measurable loss of comfort and thus, need repair/service
intervention.
The algorithm monitors the duration in which the indoor temperature is above the cool set point or below the heat set point and does not approach the set-point. When
an issue is detected alarm 901 is activated.

19
Table 7. Smart Hub Parameters
Parameter
(In alphabetical
order)
Description
Electric Heat Stages
During Defrost
Can increase or decrease the number of electric elements to come on during a call for defrost. Thermostat will have a demand for heat.)
Range is 0 to 5 electric heat stages. Default is 2. Adjustments are in increments of 1.
Equipment Name A unique name can be assigned to this component. Name can be up to 29 characters. Name can consist of letters, numbers, special characters and spaces. Default
name is Subnet Controller.
Group ID
Default Group ID is 1. Valid range is 0 to 9.
Multiple smart hubs in a home can be assigned to a group (up to nine groups with up to eight smart hubs in each group). All smart hubs in a group can communicate
with other smart hubs in the same group over the home Wi-Fi network.
If a smart hub is set to Group ID 0, there is no connectivity with another smart hub.
Heat Cool Stages Locked In
Heat Cool (H/C) Stages Lock in default is disabled (heat/cool stages are turned o󰀨 separately). If changed to Enabled, heat/cool stages are turned o󰀨 together. For non-variable speed systems
only.
H/C
Stages
Locked =
Enabled
H/C
Stages
Locked =
Disabled
POINTS:
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
SP -1.5 SP -1.0 SP -0.5 SP SP +1.5SP +1.0 0.2+PS5.0+PS
Stg1 Differential
Stg2 Differential
Stg2 Differential
Stg1 Differential
Cooling (1- and 2-Stages)
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
1st stage
ON
2nd stage
ON
1st stage
ON
2nd stage
ON
2nd
stage
OFF
1st
stage
OFF
1st
stage
OFF
2nd stage
OFF
SP -1.5SP -1.0 SP -0.5 SP SP +0.5SP -2.0
Stg1 Differential
Stg2 Differential
SP -2.5SP -3.0
Stg1 Differential
Stg2 Differential
POINTS:
Heating - Non-Heat Pump or Heat Pump w/o backup heat - 1 or 2 stages

20
Table 7. Smart Hub Parameters
Parameter
(In alphabetical
order)
Description
H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
POINTS:
3rd stage
ON
1st stage
ON
2nd stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
2nd
stage
OFF
3rd stage
OFF
SP -1.5 SP -1.0 SP -0.5 SP S
P
SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Heating - Heat Pump with Electric - 3 Stage
(2 compressor / 1 backup OR 1 compressor / 2 backup)
H/C
Stages
Locked =
Enabled
H/C
Stages
Locked =
Disabled
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON Stg4 Differential
2nd
stage
OFF
3rd stage
OFF
4th stage
OFF
5.0-PS0.1-PS5.1-PS:STNIOP SP S
P
SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Stg4 Differential
Heating - Heat Pump with Electric - 4 Stage (2 compressor / 2 backup)
H/C
Stages
Locked =
Disabled
abled
2nd stage
ON
1st stage
ON
2nd
stage
OFF
1st
stage
OFF
SP -1.5 SP -1.0 SP -0.5 SP SP +0.5SP -2.0
Stg1 Differential
SP -2.5SP -3.0
Stg2 Differential
POINTS:
Heating - Dual Fuel - 2 Stage (1 compressor / 1 backup)