Lennox ComfortSense 7000 series Homeowner's Manual page 2

®
ComfortSense 7000 Series Model L7742U Thermostat
®
The ComfortSense 7000 Series Model L7742U thermostat is an elec-
tronic 7−day, universal, multi−stage, programmable, touch screen ther-
mostat. It also offers enhanced capabilities including humidification /
dehumidification / dewpoint measurement and control, Humiditrol
EDA (Enhanced Dehumidification Accessory) control, and equipment
maintenance reminders.
S
Large, clear display with soft blue backlight shows the current and
set temperature, day/date/time, indoor relative humidity and out-
door temperature (if optional outdoor sensor is used).
S
Dehumidification measurement and control
S
®
Humiditrol EDA capability
S
Dew point adjustment control
S
Menu−driven programming guides user through the scheduling
process showing only necessary information on each screen.
S
Ergonomic design.
S
Smooth Setback Recovery starts system early to achieve set-
point at start of program period.
506229−01 05/09
S
Compressor short−cycle protection (5 minutes).
S
Real−time clock keeps time during power failures and automati-
cally adjusts for daylight savings time and leap year.
®
S
Maintenance reminders let user know when to service or replace
filters, humidifier pads, ultraviolet lamps, plus two user or installer
defined custom reminders.
S
Program Hold options allow user to override the program sched-
ule as desired by time and date.
S
Select individual days or groups of days to set programming.
S
Programmable fan offers increased performance when combined
with whole home indoor air quality products.
S
Outdoor temperature display (with optional outdoor sensor)
shows current outdoor temperature.
Your installer has set up your thermostat based on the type of heating
and cooling system and accessories that your thermostat connects to.
This booklet details user settings available to you that will give you as
much functionality and control as you want.
Page 2