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Lennox X4146 Engineering Data page 2

Controls touchscreen, digital programmable thermostat, 1/3 heat, 1/2 cool single/multi stage
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FEATURES
TOUCHSCREEN DISPLAY (CONTINUED)
Programming Screen
− Each day of week (MON . . . SUN)
− Schedule periods (WAKE / LEAVE / RETURN / SLEEP)
USER SETTINGS
Schedule Periods (WAKE / LEAVE / RETURN / SLEEP)
User can select any combination of days to have the same
time and temperature schedules (examples − Monday
through Friday, Saturday and Sunday).
Schedule times are spaced in 15 minute intervals.
Schedule periods can be cancelled (skipped) during
programming to maintain the currently operating period
(example; cancel the LEAVE period and keep the WAKE
period operating until the SLEEP period occurs)
Fan setting can also be programmed for ON, AUTO or
CIRC operation for each period.
Temperature Overrides
User can select three different Hold" schedules.
1. Hold Temperature Until (Holds the temperature until
the next scheduled period time or until the user
cancels (press CANCEL or SCHED to cancel and
resume normal schedule)
2. Permanent Hold (Holds the temperature until
cancelled by user).
3. Vacation Hold (Holds the temperature for a user
designated number of days).
Fan Schedule
User can select three different Fan" schedules.
1. Auto (default) (fan only operates when equipment is
operating).
2. On (Fan runs continuously for improved air
circulation).
3. Circ (Fans runs randomly for 35% of scheduled period
for improved air circulation − approximately 12 minutes
every 1/2 hour).
Fan Override
Fan setting can be changed to any of the 3 fan schedules
above during any time period. Fan operation will return to
normal programmed operation when the next scheduled
time period begins
Maintenance Reminders
Reminders notify user when to replace filters, humidifier
pads or ultraviolet lamps.
Thermostat flashes Change . . . Filter, Change . . .
Humidifier Pad, Change . . . UV Lamp until user resets
reminder (RESET key).
Touchscreen Cleaning
Pressing SCREEN locks the thermostat for 30 seconds to
allow cleaning of the screen.
Pressing DONE resumes thermostat operation.
BATTERY BACKUP
Three AAA alkaline batteries (furnished) provide backup
in case of power failure.
LO batt indicator flashes on screen for approximately 30
days before batteries must be replaced.
LED INDICATOR
LED is located in the upper right−hand corner of the
thermostat − only visible when lit.
When equipment monitor is connected to thermostat L
terminal, LED lights if monitor send a check or failure
signal to thermostat.
®
Elite
Digital Touchscreen Thermostat / Page 2
INSTALLER SETTINGS
Date
− Year/first two digits (factory setting is 20)
− Year/last two digits (factory setting is 05)
− Month (factory setting is 8)
− Day (factory setting is 19)
Schedule
− 7−day programming (factory setting)
− Non−programmable
System Type
− Single Stage Heat/Cool − Gas, oil or electric heating
with central air conditioning (factory setting)
− Single Stage Heat Pump − no back−up or aux. heat)
− Heat Only w/o fan (conventional)
− Heat Only w/ fan (conventional)
− Hot Water Heat Only (conventional) gas or oil hot
water heat. Power open/power close hot water zone
valves or normally open valves
− Cooling Only (conventional) central air conditioning
only
(3 Heat / 2 Cool Models only)
− 2 Heat / 1 Cool Heat Pump − heat pump w/ back−up or
aux. heat
− 2 Heat / 2 Cool Multi−Stage (conventional)
− 2 Heat / 1 Cool Multi−Stage (conventional)
− 1 Heat / 2 Cool Multi−Stage (conventional)
− 2 Heat / 2 Cool Heat Pump − no aux. heat
− 3 Heat / 2 Cool heat Pump − w/ aux. heat
Fan Control Heating (3 Heat / 2 Cool Models only)
− Gas or Oil Heat (factory setting)
− Electric Heat
Auxiliary Heat Source (3 Heat / 2 Cool Models only)
− Electric Heat (factory setting)
− Fossil Fuel (heat pump applications)
External Fossil Fuel Kit
− No External Kit Controlling Heat Pump Aux. Heat −
Thermostat controls dual fuel operation (optional
Outdoor Temperature Sensor required)
− External Fossil Fuel Kit Controls Heat Pump Aux. Heat
Additional Installer settings are available for the following:
− Cycle Per Hour for Cooling and Heating Stages
− Backlight Operation
− Compressor Lock−out
− Changeover
− Deadband
− Fahrenheit or Celsius Temperature Display
− Daylight Savings
− Outdoor Temperature Sensor
− Lock−out for Heat Pump Compressor and Aux. Heat
− Intelligent Recovery
− Number of Periods
− Min. Compressor Off" Time
− Heat / Cool Temperature Range
− Clock Format
− Heat / Cool Extended Fan On" Time
− Maintenance Reminders
− Keypad Lock−out
− Heat / Cool Temperature Control
− Temperature Display Offset
− Reset Thermostat
Please refer to the Installation Instructions for detailed
information.

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X4147