Outdoor Temperature Sensor Installation (Optional); Thermostat Installation; New Installation - Lennox iComfort M30 Installation And Setup Manual

Outdoor Temperature Sensor
Installation (Optional)
Install the optional (purchase separately) outdoor
sensor (X2658) on a northern wall of the home,
away from direct sunlight or other heat sources that
may affect its sensitivity.
The sensor is required for:
• Outdoor temperature displays on the home
screen if enabled
• Balance point adjustment and control. The sensor
enables optimal heating equipment operation via
programmable balance points.
• Dew point humidity control
• Humiditrol EDA operation (required)
• Requires 22AWG thermostat wire or larger and
not to exceed 300 feet (91 meters) maximum run.
• Connects to To and Tc terminals on thermostat
Connect outdoor sensor to terminals Tc and To on
thermostat.
NOTE: If alert code 108 appears on the screen,
check your wiring connections to terminals
To and Tc on the thermostat. Check
resistances using the resistance table
provided in the outdoor sensor instruction.

Thermostat Installation

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eW nstallation
The following procedure is for new installation or
installing the M30 to a new location in an existing
home.
1. Unpacked the thermostat and open the case
with a thin-blade screwdriver. Place between
wall base and unit and twist to separate unit
from base.
2. Select a location for the thermostat about 5
feet (1.5 meters) above the floor in an area with
good air circulation at average temperature.
3. Do not install the thermostat where it can be
affected by:
• Drafts or dead spots behind doors and in
corners.
• Building entrances or automatic doors
• Heat generating equipment such as kitchen
equipment
• Enclose environment unless a remote indoor
sensor is used.
• Hot or cold air from ducts.
• Radiant heat from sun or appliances.
• Concealed pipes and chimneys.
• Non-heated (non-cooled) areas such as an
outside wall behind the thermostat.
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