Wiring Diagrams; Communicating System Wiring; Communicating Indoor/Non-Communicating Outdoor System Wiring - Lennox iComfort Wi-Fi Setup Manual

Wiring Diagrams

DAS NOTE - The discharge air sensor is
intended to be mounted downstream of the
furnace heat exchanger and air conditioning
coil. It must be placed in free airflow, where
other accessories (such as humidifiers, UV
lights, etc.) will not interfere with its accur­
acy. Wiring distance between the IFC or
AHC and the discharge air sensor should
not exceed 10ft when wired with 18-gauge
thermostat wire.
OAS NOTE - Wiring distance between the
IFC or AHC and the outdoor temperature
sensor should not exceed 200ft when wired
with 18-gauge thermostat wire.
iComfort
OPTIONAL DIS­
CHARGE AIR
SENSOR (SEE
DAS NOTE ON
PAGE 72)
SMART HUB
RSBus
A A
B
B
i+
i+
-
-
HD
DISPLAY
Figure 13. iComfort
®
iComfort Wi-Fi
OPTIONAL DISCHARGE
AIR SENSOR (SEE DAS
OPTIONAL OUT­
DOOR AIR SENSOR
(SEE OAS NOTE)
SMART HUB
C
i-
i+
HD DISPLAY
R
A
B
i+
-
Figure 12. iComfort
®
AIR HANDLER (AHC)
OPTIONAL OUT­
DOOR AIR SENSOR
(SEE OAS NOTE
ON PAGE 72)
Setup Notes:
Cut Y1-Y2 On-board
Link For 2-stage Out­
door Units
Cut R-O On-board Link
For Outdoor Heat Pump
Units
STANDARD
OUTDOOR HEAT
PUMP UNIT - 1
OR 2 STAGE
®

Communicating Indoor/Non-Communicating Outdoor System Wiring

iComfort
FURNACE (IFC) OR AIR HANDLER (AHC)
NOTE)
RSBus
A
B
i+
-
®

Communicating System Wiring

IComfort
OPTIONAL DIS­
CHARGE AIR
SENSOR (SEE
DAS NOTE ON
PAGE 72)
SMART HUB
A
B
i+
-
Setup Note:
Cut Y1-Y2 On-
board Link For
2-stage Outdoor
Units
Maximum total length of all connections on the RSBus is limited to 1500ft.
Wire gauge of RSBus wire is 18.
7-Day Programmable Communicating Thermostat
Page 71
®
IComfort
OUTDOOR AIR CONDITIONING
OR HEAT PUMP UNIT
RSBus
Maximum total length of all connections on
the RSBus is limited to 1500ft.
Wire gauge of RSBus wire is 18.
®
FURNACE (IFC) OR AIR HANDLER (AHC)
A
B
i+
-
®
OPTIONAL OUT­
DOOR AIR SENSOR
(SEE OAS NOTE
ON PAGE 72)
STANDARD
OUTDOOR AIR
CONDITIONING
UNIT - 1 OR 2
STAGE