Thermostat Installation; New Installation - Lennox iComfort M30 Installation And Setup Manual

programmable balance points.
• Dew point humidity control
• Humiditrol EDA operation (required)
• Connects to To and Tc terminals 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

New Installation

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
• 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.
4. Run thermostat wiring from indoor unit to
location where thermostat will be installed.
5. Drill or make opening through wall for thermostat
wiring 3/4" x 3/4" (19mm x 19mm).
6. Pull about three inches (76mm) of thermostat
wire through the opening and removed outer
thermostat wire jacket. This will help in routing
the thermostat wiring to the proper thermostat
terminals.
NOTE: Thermostat wires and outdoor sensor wire
can be run in the same bundle of wires if
needed.
7. Seal the hole in the wall with a suitable material
to prevent drafts from entering the thermostat
case. Not doing so could affect the thermostat's
internal temperature sensor.
8. Trim 1/4 inch (6 mm) insulation from end of
each thermostat wire lead.
5