Lennox icomfort Wi-Fi - Communicating Indoor;Non-Communicating Outdoor System Wiring; Communicating System Wiring; Wiring Diagrams

iComfort Wi-Fi
®
7-Day Programmable Communicating Thermostat
Page 71
Wiring Diagrams
iComfort
®
FURNACE (IFC) OR AIR HANDLER (AHC)
SMART HUB
IComfort
®
OUTDOOR AIR CONDITIONING
OR HEAT PUMP UNIT
OPTIONAL OUT
DOOR AIR SENSOR
(SEE OAS NOTE)
OPTIONAL DISCHARGE
AIR SENSOR (SEE DAS
NOTE)
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.
Maximum total length of all connections on
the RSBus is limited to 1500ft.
Wire gauge of RSBus wire is 18.
RSBus
RSBus
C
i+
i-
R
A
i+
B
-
A
i+
B
-
HD DISPLAY
Figure 12. iComfort
®
Communicating System Wiring
STANDARD
OUTDOOR HEAT
PUMP UNIT - 1
OR 2 STAGE
iComfort
®
AIR HANDLER (AHC)
IComfort
®
FURNACE (IFC) OR AIR HANDLER (AHC)
STANDARD
OUTDOOR AIR
CONDITIONING
UNIT - 1 OR 2
STAGE
OPTIONAL OUT
DOOR AIR SENSOR
(SEE OAS NOTE
ON PAGE 72)
OPTIONAL DIS
CHARGE AIR
SENSOR (SEE
DAS NOTE ON
PAGE 72)
Maximum total length of all connections on the RSBus is limited to 1500ft.
Wire gauge of RSBus wire is 18.
RSBus
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
Setup Note:
Cut Y1-Y2 On-
board Link For
2-stage Outdoor
Units
OPTIONAL DIS
CHARGE AIR
SENSOR (SEE
DAS NOTE ON
PAGE 72)
OPTIONAL OUT
DOOR AIR SENSOR
(SEE OAS NOTE
ON PAGE 72)
A
i+
B
-
A
i+
B
-
SMART HUB
HD DISPLAY
A
i+
B
-
A
i+
B
-
SMART HUB
HD
DISPLAY
Figure 13. iComfort
®
Communicating Indoor/Non-Communicating Outdoor System Wiring