Lennox EL296UHV Installation Instructions Manual page 41

®
icomfort Wi-Fi Thermostat with EL296UHV
and Non-Communicating Outdoor Unit
®
icomfort Wi-Fi Thermostat
®
icomfort -Enabled EL296UHV Indoor Furnace
Non-Communicating Outdoor Air Conditioner
icomfort®-
ENABLED
EL296UHV
FURNACE
OPTIONAL
DISCHARGE
AIR SENSOR
icomfort Wi-Fi®
THERMOSTAT
CLIP ON-BOARD LINK
W915 (Y1 TO Y2) FOR
TWO-STAGE OPERATION
Outdoor Unit
Communicating systems using the Icomfort Wi-Fi
mostat wires between the thermostat and the furnace/air handler control and four
wires between the outdoor unit and the furnace/air handler control. When a ther­
mostat cable with more than four wires is used, the extra wires must be properly
connected to avoid electrical noise. The wires must not be left disconnected.
Use wire nuts to bundle the four 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 the diagram above.
icomfort Wi-Fi
icomfort
icomfort
OPTIONAL
OUTDOOR
AIR SENSOR
AIR SENSOR
NON-COMMUNICATING
OUTDOOR AIR
CONDITIONING UNIT -
1 OR 2 STAGE
Indoor Unit
Controller
Single wire to
terminal C
Unused wires
FIGURE 57
Page 41
®
icomfort Wi-Fi Thermostat with EL296UHV
®
and icomfort -ENABLED Outdoor Unit
®
Thermostat
®
-Enabled EL296UHV Indoor Furnace
®
-Enabled Outdoor Air Conditioner or Heat Pump
icomfort
ENABLED
EL296UHV
FURNACE
OPTIONAL
DISCHARGE
AIR SENSOR
OPTIONAL
OUTDOOR
icomfort Wi-Fi®
THERMOSTAT
Single wire to
terminal C
Unused wires
®
thermostat require four ther­
®
-
®
icomfort - ENABLED
OUTDOOR AIR CONDITIONING
OR HEAT PUMP UNIT
®
Icomfort Wi-Fi
thermostat