Lennox X4146 Engineering Data

E N G I N E E R I N G D A T A
FEATURES
− Large, clear display with backlight shows the current
and set temperature and time
− Menu−driven programming guides user through the
scheduling process showing only necessary
information on each screen.
− Touchscreen interaction
− Ergonomic design
− Intelligent recovery starts system early to achieve
setpoint at start of program period
− Real−time clock keeps time during power failures and
automatically updates to daylight savings
− "Saving Changes" notification lets user know when the
schedule changes have been saved
− Change/check reminders let user know when to service
or replace filters, humidifier pads, ultraviolet lamps and
thermostat batteries
− Multiple Hold options allow user to override the program
schedule as desired
− Select multiple days to set same programming for all.
− Armchair programming allows user to remove the
thermostat from the wall for programming
− Programmable fan offers increased air quality when
combined with a whole house air cleaner
− Outdoor temperature display (with optional outdoor
sensor) shows current outdoor temperature
Warranty
Five−year limited warranty in residential applications.
Refer to Lennox Equipment Limited Warranty certificate
included with unit for specific details.
APPROVALS
Factory preset program settings conform to EPA E
®
S recommended setpoints.
TAR
'
Digital Programmable Thermostats
APPLICATIONS
Fully programmable thermostats provides universal
system compatibility, precise comfort control and easy
programmability.
Provides temperature control for gas, oil, electric and heat
pumps for 1 heat / 1 cool single stage (X4146) or 3 heat / 2
cool multi−stage (X4147) systems (3 heat / 2 cool model
includes dual fuel operation).
FULLY PROGRAMMABLE
7 day programming. Any number of days of the week may
have the same schedule.
2 or 4 schedule periods per day.
Battery back−up maintains all programming in the event of
a power outage.
TOUCHSCREEN DISPLAY
Home Screen
− Indoor temperature (Inside)
− Setpoint temperature (Set To)
− Outside temperature (Outside)
(with optional remote Outdoor Temperature Sensor)
− Current time, hold time remaining or number of vacation
days remaining
− Day of week
− SYSTEM mode
(HEAT / OFF / COOL / AUTO) 1 heat / 1 cool
(EM. HEAT / HEAT / OFF / COOL / AUTO) 3 heat / 2 cool
− FAN mode (ON / AUTO / CIRC)
− Enter scheduling mode (SCHED)
− Hold mode (HOLD)
− Time set (CLOCK)
− Screen cleaning (SCREEN)
− Raise / lower temperature setting (Up / Down Arrows)
NERGY
− Additional system information (MORE)
C O N T R O L S
TOUCHSCREEN
Supersedes February 2005
1 Heat / 1 Cool Single Stage
3 Heat / 2 Cool Multi−Stage
Bulletin No. 210411
September 2007