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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 Wi-Fi
Thermostat
iComfort by Lennoxt Indoor Furnace or Air Handler
iComfort by Lennoxt Outdoor Condensing Unit or Heat Pump
ICOMFORT™ COMMUNICATING INDOOR/NON-COMMUNICATING OUTDOOR SYSTEM WIRING
iComfort by Lennoxt AIR HANDLER (AHC)
OPTIONAL DIS
CHARGE AIR
SENSOR (SEE
DAS NOTE ON
PAGE 36)
®
iComfort Wi-Fi
THERMOSTAT
RSBus
Maximum total
length of all connec
tions on the RSBus
is limited to 1500ft.
Wire gauge of RS
Bus wire is 18.
®
iComfort Wi-Fi
Thermostat
iComfort by Lennoxt
Air Handler
Standard Outdoor Heat
Pump
®
iComfort Wi-Fi
ICOMFORT™ COMMUNICATING SYSTEM WIRING
iComfort by Lennoxt
FURNACE (IFC) OR AIR HANDLER (AHC)
OPTIONAL DIS
CHARGE AIR
SENSOR (SEE
DAS NOTE)
OPTIONAL OUT
DOOR AIR SENSOR
(SEE OAS NOTE)
®
iComfort Wi-Fi
THERMOSTAT
RSBus
iComfort by Lennox
OPTIONAL OUT
DOOR AIR SENSOR
(SEE OAS NOTE
ON PAGE 36)
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
iComfort Wi-Fi
iComfort by Lennoxt Indoor Furnace or Air Handler
Standard Outdoor Condensing Unit
Page 35
iComfort by Lennoxt
OUTDOOR AIR CON
DITIONING OR HEAT
RSBus
Maximum total length of all connections on
the RSBus is limited to 1500ft.
Wire gauge of RSBus wire is 18.
t
FURNACE (IFC) OR AIR HANDLER (AHC)
OPTIONAL DIS
CHARGE AIR
SENSOR (SEE
DAS NOTE ON
PAGE 36)
®
iComfort Wi-Fi
THERMOSTAT
RSBus
Maximum total
length of all connec
tions on the RSBus
is limited to 1500ft.
Wire gauge of RS
Bus wire is 18.
Setup Note:
Cut Y1-Y2 On-
board Link For
2-stage Outdoor
Units
®
Thermostat
7-Day Programmable Communicating Thermostat
PUMP UNIT
OPTIONAL OUT
DOOR AIR SENSOR
(SEE OAS NOTE
ON PAGE 36)
STANDARD
OUTDOOR AIR
CONDITIONING
UNIT - 1 OR 2
STAGE
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