Lennox icomfort Touch - Wiring Diagrams; icomfort Communicating System Wiring; icomfort Communicating Indoor;non-Communicating Outdoor System Wiring

506566−01 09/10
Page 34
Wiring Diagrams
icomfort Communicating System Wiring
icomfort by Lennox
FURNACE (IFC) OR AIR HANDLER (AHC)
icomfort Touch
THERMOSTAT
icomfort by Lennox
OUTDOOR AIR CON-
DITIONING OR HEAT
PUMP UNIT
OPTIONAL OUT-
DOOR AIR SENSOR
(SEE OAS NOTE)
OPTIONAL DIS-
CHARGE AIR SEN-
SOR (SEE DAS
NOTE)
icomfort Touch Thermostat
icomfort by Lennox Indoor Furnace or Air Handler
icomfort by Lennox Outdoor Condensing Unit or Heat Pump
DAS NOTE − The discharge air sensor is
intended to be mounted downstream of the
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 accuracy. Wir-
ing 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
Wiring Diagrams
icomfort Communicating Indoor/non−Communicating Outdoor System Wiring
icomfort Touch
Thermostat
icomfort by Lennox Air
Handler
Standard Outdoor Heat
Pump
STANDARD
OUTDOOR HEAT
PUMP UNIT − 1
OR 2 STAGE
icomfort by Lennox AIR HANDLER (AHC)
icomfort Touch
THERMOSTAT
icomfort by Lennox
 FURNACE (IFC) OR AIR HANDLER (AHC)
icomfort Touch
THERMOSTAT
STANDARD
OUTDOOR AIR
CONDITIONING
UNIT − 1 OR 2
STAGE
icomfort Touch Thermostat
icomfort by Lennox Indoor Furnace or Air Handler
Standard Outdoor Condensing Unit
OPTIONAL OUT-
DOOR AIR SENSOR
(SEE OAS NOTE
Page 34)
OPTIONAL DIS-
CHARGE AIR SEN-
SOR (SEE DAS
NOTE Page 34)
OPTIONAL OUT-
DOOR AIR SENSOR
(SEE OAS NOTE
Page 34)
OPTIONAL DIS-
CHARGE AIR SEN-
SOR (SEE DAS
NOTE Page 34)
Maximum total
length of all connec-
tions on the RSBus
is limited to 1500ft.
Wire gauge of
RSBus wire is 18.
Maximum total
length of all connec-
tions on the RSBus
is limited to 1500ft.
Wire gauge of
RSBus wire is 18.
RSBus
RSBus
Setup Notes:
Cut Y1−Y2 Onboard Link
For 2−stage Outdoor
Units
Cut R−O Onboard Link
For Outdoor Heat Pump
Units
Setup Note:
Cut Y1−Y2 Onboard
Link For 2−stage
Outdoor Units