Removing/Installing Thermostat; Default Thermostat Settings; Technical Specifications - Lennox ComfortSense 3000 Series Operation Manual

below the SETTINGS button (see figure 17). Use a paper
clip or small pencil to press the RESET button; ALL
thermostat settings will be reset to the defaults listed in the
Default Thermostat Settings section.

Removing/Installing Thermostat

The thermostat hinges on tabs on the top of the sub-base;
no tool is needed to remove the thermostat from the
sub-base. Pivot the bottom of the thermostat outward
(releasing the snaps), then lift up to remove.
To replace it, first position the top tilted toward the wall
bracket and align it until you feel the tabs and slots engage;
then, while the top is in place, pivot the bottom toward the
wall until the thermostat snaps into place.

Default Thermostat Settings

Default thermostat settings are shown in table 3.
Table 3. Default Thermostat Settings
Mode
Setpoint
Fan
Filter Reminder
Maintenance Reminder
Equipment Protection Timers
Heat (Permanent Hold Mode)
70°F (or 21°C)
Auto
OFF
OFF
Reset Back to Zero

Technical Specifications

Thermostat Type
Electronic programmable thermostat for non-heat pump,
2‐stage heat / 2‐stage cool.
Power Supply Range
18VAC - 30VAC (24VAC nominal), 50Hz
1
When the thermostat is used in 50Hz applications, the
tolerance will be lowered leading to slight change in
temperature control accuracy.
24VAC is present on the terminals of the thermostat
bracket. If removing the thermostat from the wall, use cau­
tion and avoid touching any of the connector terminals on
the wall bracket.
Also, when working with the thermostat dip switches, use
a non-conductive tool and take caution to avoid making
any contact with the circuit board, its imprinted circuitry
and its connector prongs.
Temperature Display
S
Display Scale: Fahrenheit or Celsius user selectable
S
Display range: 35°F (2°C) to 99°F (37°C)
S
Display resolution: 1°F (1°C)
S
Display Accuracy: +/-1°F
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1
or 60Hz
CAUTION
5/2 DAY PROGRAMMABLE COMMERICAL THERMOSTAT