Sensor Wiring; Hd Display External Components; Reducing Electrical Noise - Lennox iComfort E30 Installation And Setup Manual

Sensor Wiring

The following diagrams in this section illustrates the basic Lennox control
wiring for all compatible components.
Discharge Air Temperature Sensor (DATS)
Installation of discharge air temperature sensor (DATS) (88K38) must comply
with the following requirements:
• Installed downstream of the heat exchanger or electric heat elements.
• It must be placed in free airflow, where other accessories (such as humidifiers,
UV lights, etc.) will not interfere with its accuracy.
• Wiring distance between the integrated furnace and air handler controls or
damper control module and the discharge air sensor must not exceed 10 feet
(3 meters) when wired with 18# AWG thermostat wire.
• DATS is highly recommended for all systems that include a variable capacity
outdoor unit in order to provided more precise dehumidification operation.
Outdoor Air Temperature Sensor (OATS)
The optional outdoor air (temperature) sensor (OATS) (X2658) wiring distance
to the iComfort E30 should not exceed 150 feet (45 meters) when wired with
minimum 22 #AWG (recommend 18 #AWG) dedicated 2-conductor thermostat
cable. Installation of OATS must comply with the following requirements:
• Sensor wiring must be run to avoid touching or being close to high voltage
wiring and light ballast.
• Choose a protected outdoor location away from direct sunlight or other heat
sources (usually on the north side of the building).
• Ensure that water will neither collect on, nor wash over the sensor.
• Do not locate the sensor near driveways or similar heat-absorbing masses
which may reflect stored heat energy onto the sensor and send inaccurate
information to the thermostat.
• Locate the sensor away from attic and soffit vents, or furnace venting pipes.
• Do not locate the sensor directly above an air conditioner or heat pump.

HD Display External Components

• Proximity sensor - Detects a person approaching the HD Display. If the HD
Display is in screen saver mode and the proximity sensor setting is enabled
(factory default is ON), the proximity sensor takes the HD Display out of
screen saver mode automatically and returns to the home screen when
someone approaches. This feature can be disabled by going to menu >
setting > display.
• Humidity sensor - This is the intake location for the built-in humidity sensor.
Do not block the intake location. The indoor humidity percentage is displayed
(enabled by default) on the home screen. The humidity percentage display
on the home screen can be disabled by going to menu > setting > display.
• Reboot button - Press and hold this button for approximately six (6) seconds
to reboot the HD display. No settings are lost using this procedure.
• MicroSD card slot - For future use.
• Micro USB connector - For future use.
Proximity and Ambient Light Sensors
humidity sensor
air discharge
temperatur sensor
humidity sensor
air intake
Figure 4. HD Display Components

Reducing Electrical Noise

• Use wire nuts to bundle the 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 "Figure
5. Thermostat Wiring - E30 Smart Hub to HD Display Subbase
(Electrical Noise Termination Consideration)" on page 8.
• Keep all wiring as far away from the house electrical wiring and large
electrical appliances as possible. Recommended minimal distance is 15 feet
(5 meters).
NOTE: If the HD Display is removed from the subbase, the HD Display will
shut down and will not be able to communicate with the system.
7
microSD slot
micro USB port
power button
Subbase attached