Lennox Comfortsense Thermostat Brochure

CONTROLS
TOUCHSCREEN
COMFORTSENSE® 7000
7-Day Programmable Thermostat
E N G I N E E R I N G D ATA
Bulletin No. 210515
June 2009
Supersedes February 2008
HOME
SCHEDULE
OPTIONS
SET AT
MODE
HEAT
AUTO
SET AT
ON
COOL
SCHED
INDOOR RH 26%
WED AN 21 12:35AM
4 Heat / 2 Cool Universal Multi−Stage
MODEL NUMBER IDENTIFICATION
L7742U
Brand
L = Lennox
System Type
U - Universal Compatibility
Series
7 = Digital Programmable Touchscreen
Programming
7 - 7 Day
Cooling Stages
2 = Two Stages
Heating Stages
4 = Four Stages
FEATURES
The ComfortSense® 7000 is an electronic 7-day,
universal, multi-stage, programmable, touchscreen
thermostat. It also offers enhanced capabilities including
humidification / dehumidification / dewpoint measurement
and control, Humiditrol® Enhanced Dehumidification
Accessory (EDA), and equipment maintenance
reminders.
•Large, clear display with backlight shows the current
and set temperature, day/date/time, indoor relative
humidity and outdoor temperature (if optional outdoor
sensor is used).
•Menu-driven programming guides user through the
scheduling process showing only necessary information
on each screen.
•Touchscreen interaction.
•Ergonomic design.
•Smooth Setback Recovery starts system early to
achieve setpoint at start of program period.
•Compressor short-cycle protection (5 minutes).
•Real-time clock keeps time during power failures and
automatically updates to daylight savings.
•Maintenance reminders let user know when to service
or replace filters, humidifier pads, ultraviolet lamps, plus
two user or installer defined custom reminders.
•Program Hold options allow user to override the
program schedule as desired by time and date
•Select individual days or groups of days to set
programming.
•Programmable fan offers increased air quality when
combined with a whole house air indoor air quality
product.
•Outdoor temperature display (with optional outdoor
sensor) shows current outdoor temperature
•Permanent memory storage of programs.
•Remote Lennox Systems Operation Monitor (LSOM
monitoring (for Lennox equipped LSOM outdoor units
using the L terminal.
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
ENERGY STAR® recommended setpoints. ENERGY
STAR® Qualified.
FEATURES
APPLICATIONS
Fully programmable thermostat provides universal
system compatibility, precise comfort control and easy
programmability.
Provides temperature control for gas, oil, electric and
heat pumps for up to 4 heat / 2 cool multi-stage systems
(includes dual fuel operation).
TOUCHSCREEN DISPLAY
Home Screen
COOLING
FRI OCT 23 1:15PM
•Large display of indoor temperature
•Current heating setpoint temperature (SET AT HEAT)
•Current cooling setpoint temperature (SET AT COOL
NOTE - Both setpoint temperatures and adjustment arrows are
displayed if System is set to Auto mode.
•Raise / Lower temperature settings (Up / Down Arrows
for temporary override
•Outdoor temperature (Outdoor)
(with optional remote Outdoor Temperature Sensor)
•Cooling or Heating mode or other System modes
•Compressor short-cycle protection (WAIT)
•Day of Week, Month and Day and Time of Day
NOTE - Information in this area changes depending on thermostat
configuration and user interface (scheduling, indoor humidity, hold
settings, service reminders, dealer information, etc.).
•MODE (system) area
(HEAT / COOL / AUTO / OFF / EM HEAT)
•SCHED (Schedule) mode area
(ON / OFF)
Temperature Overrides
During SCHED ON user can temporarily override the
program schedule as desired by time and date.
User can maintain existing heat/cool temperatures or
adjust them as needed (in one degree increments) using
the Up / Down arrows on the Home screen.
User can also select how long to to hold temperatures
by time (in ten minute increments) and calendar date
Default is three hours.
SCHED OFF maintains current setpoints indefinitely.
ComfortSense® 7000 Touchscreen Thermostat / Page 2
Schedule Screen
•Current heating setpoint temperature (SET AT HEAT)
•Current cooling setpoint temperature (SET AT COOL)
•Raise / Lower temperature settings (Up / Down Arrows
•Up / Down arrows for adjusting time
•Each day of week (MON . . . SUN)
•Schedule periods (WAKE / LEAVE / RETURN / SLEEP)
•Fan (ON / AUTO / CIRC)
•Edit schedule settings (CANCEL / EDIT)
•Advance to next setting (NEXT)
•Save schedule changes (SAVE)
Schedule Periods (WAKE / LEAVE / RETURN / SLEEP)
7 day programming.
Individual programming for each day of the week or by
specific groups of days:
•Monday through Sunday (7 individual days)
•Monday through Friday + Saturday and Sunday (5 + 2)
•Monday through Sunday (All days have same program)
NOTE - Individual days within a group of days can also be changed if
required.
2 or 4 schedule periods per day (see User Settings).
Schedule times are spaced in 10 minute intervals.
Fan setting can also be programmed for ON, AUTO or
CIRC operation for each period.
FEATURES
TOUCHSCREEN DISPLAY (CONTINUED)
REMINDERS
USER SETTINGS
Options Screen
•FAN mode area (ON / AUTO / CIRC / AUTO / ON)
•Maintenance reminders (REMINDERS)
•User configuration (USER SETTINGS)
•Installer configuration (INSTALLER SETTINGS)
•Clean screen button (CLEAN)
Fan Modes
Fan Modes can be changed directly from the Home
screen or on the Options screen.
User can select three different “Fan” modes:
1.Auto Fan operates only when equipment is operating
and follows a schedule.
NOTE - In AUTO mode, fan can operate in AUTO mode, ON mode or
CIRC mode if it is programmed as such for the current schedule.
2.On Fan runs continuously for improved air circulation.
3.Circ Intermittent fan operation when equipment
is not operating. Fan operates for a programmed
percentage of time per hour.
Fan is adjustable to 15%, 25%, 35%, 45% for
improved air circulation.
Fan Circulation Times:
• 15% - 9 minutes on per hour.
• 25% - 15 minutes on per hour.
• 35% - 21 minutes on per hour (default).
• 45% - 27 minutes on per hour.
NOTE - Fan can be set to operate at any of the 3 modes
above during any programmed schedule.
Reminders
Reminders notify user when routine maintenance is
required.
•Filter Media (REPLACE FILTER MEDIA)
•Ultraviolet Lamp (REPLACE UV LAMP)
•Humidifier Pad (REPLACE HUM PAD)
•System Maintenance (ROUTINE SYS CHECK-UP)
•PureAir™ Maintenance (PUREAIR MAINTENANCE)
•(REMINDERS) See Installer Settings
Two custom reminders can also be set (see Installer
Settings)
User can turn on and off individual reminders (default is OFF).
Reminders can be set to chronological time or equipment
run time from 1 to 24 months.
Reminders can be reset (snooze) at any time.
Reminders that are due are displayed on the HOME
screen.
In case of power interruption:
•If the lithium battery is charged, the chronological time
or total accumulated equipment run time (depending on
reminder setting) is maintained.
•If the lithium battery is not charged, due dates for
reminders are maintained.
Touchscreen Cleaning
Pressing CLEAN locks the thermostat for 30 seconds to
allow cleaning of the screen.
SPECIFICATIONS
NOTE - For use with residential equipment only.
Order No. - Y2081
Temperature Setting Range
•Heating - 45 to 90°F
•Cooling - 50 to 99°F
Humidity Settings
•Operating range - 10 to 90% relative humidity
•Humidity setpoint (Humidification mode) - 10 to 45%
relative humidity
•Humidity setpoint (Dehumidification mode) - 35 to 60%
relative humidity
Power Supply
•24VAC (18 to 30VAC maximum), 60Hz
Clock Accuracy
•± 10 minutes per year
Terminals
•4 heat / 2 cool multi-stage
•R, H, W1, W2, O, L, Y1, Y2, G, D, B, C, T, T
Dimensions (H x W x D)
5-7/8 x 8-1/2 x 1-1/4 in. (149 x 216 x 31 mm)
Backup
Non-volatile memory maintains all programming in the
event of a power outage.
Lithium battery (furnished) provides backup for
chronological (clock) time in case of power failure.
OPTIONS
Outdoor Temperature Sensor
When installed outdoors, sensor
(X2658) allows thermostat to display
outdoor temperature. Sensor is
auto-detected when connected to
thermostat.
NOTE - Sensor is required for dual
fuel operation if thermostat controls
dual fuel system operation. Also
required with Humiditrol® applications and Humidity
Settings / Humidity / Dewpoint operation (see Installer
Settings).
ComfortSense® 7000 Touchscreen Thermostat / Page 3
FEATURES
User Settings
DATE / TIME
•Set Month, Day, Year, Hour and Minute
F/C
•Fahrenheit (default) or Celsius
12 OR 24 HOUR
•12 (default) or 24 hour clock
EVENTS DAILY 2 OR 4
•Number of schedule periods (default 4) per day
VIEW CONTACT INFO
•Displays dealer informaation
DISPLAY INFO (View alternates)
•OUTDOOR TEMP
Information display shows outdoor temperature
if equipped with Optional Outdoor Temperature
Sensor (default is off)
•INDOOR RH
Indoor Relative Humidity (default is off)
•CONTACT INFO
HUMIDITROL ADJUST
•MAX, MID, MIN (if equipped)
• MIN - 2°F below the cooling setpoint
• MAX - 2°F above the heating setpoint
• MID - halfway between MIN and MAX
FAN CIRCULATE
•See Fan Modes on previous page for % settings
available
COOLING LIMIT
•Cooling Limit, 45°F (default) adjustable (45 to 90°F)
HEATING LIMIT
•Heating Limit, 90°F (default) adjustable (90 to 45°F)
SECURITY LOCK
•Prevents tampering with thermostat settings, 3-digit
security code
HUMIDITY SETTING
•Humidity setpoint 45% (default), adjustable (15% to
45%)
•Dehumidify setpoint 50% (default), adjustable (45%
to 60%)
BACKLIGHT SETTINGS
•Power save (default) or continuous
BACKLIGHT INTENSITY
•100% (default) adjustable (20 to 100%)
ComfortSense® 7000 Touchscreen Thermostat / Page 4
FEATURES
Installer Settings
SYSTEM SETUP
NON HEAT PUMP (default)
•Gas / Oil (Default)
•Electric
•No Heat
HEAT PUMP
•Dual Fuel (Gas / Oil)
•Electric
•No Backup Heat
COMPRESSOR STAGES (1 default or 2)
INDOOR HEAT STAGES (1 default or 2 Stages)
OUTDOOR SENSOR
•YES or NO (default)
RESIDUAL COOL
•0 (default), 30, 60, 90, 120 seconds
LOW BALANCE POINT (Multi-stage Heat Pump)
•25°F (default), adjustable (-20°F to high balance point)
HIGH BALANCE POINT (Multi-stage Heat Pump)
•50°F (default), adjustable (Low balance point to 75°F)
DEADBAND
•4°F (default), adjustable (3 to 8°F)
SMOOTH SETBACK RECOVERY
•Off (default) or On
SMOOTH SETBACK RECOVERY STAGE 2 LOCKOUT
•20 min. (default), adjustable (20 to 120 minutes)
HUMIDITY SETTING
HUMIDIFY
•Off (default), Dewpoint, Precision, Basic, adjustable
(15 to 45%) 45% default setting
DEHUMIDIFY
•Off (default), Humiditrol, Precision, Basic, adjustable
(45 to 60%) 50% default setting
NOTE - Dewpoint and Humiditrol settings are only available with optional remote Outdoor Temperature Sensor
STG DELAY TIMERS
•On (default) or Off
STG 1 DIFF
•1.0°F (default), adjustable (0.5 to 8.0°F)
STG 2 DIFF
•0.5°F (default), adjustable (0.5 to 8.0°F)
STG 2 DELAY
•20 min. (default), adjustable (5 to 120 minutes)
STG 3 DIFF
•0.5°F (default), adjustable (0.5 to 8.0°F)
STG 3 DELAY
•20 min. (default), adjustable (5 to 120 minutes)
STG 4 DIFF
•-0.5°F (default), adjustable (0.5 to 8.0°F)
STG 4 DELAY
•20 min. (default), adjustable (5 to 120 minutes)
H/C STGS LOCKED IN
•YES or NO (default) turns heating stages off separately
STG 2 HP LOCK TEMP
•OFF (default) for dual fuel (lock out 2nd stage
compressor) applications, adjustable (-45 to 75°F)
DAYLIGHT SAVINGS
•On (default) or Off
CONTACT INFORMATION
•2 lines of up to 19 alphanumeric characters
CUSTOM REMINDER1
CUSTOM REMINDER2
•User defined reminders can be a custom text message
(up to 19 alphanumeric characters)
•Also displays dealer information
RESET SETTINGS
•Restores thermostat to original factory settings
NOTE - A “hard” reset option is also available. See Programming and
Application Guide.
ENERGY STAR DEFAULT
•Sets thermostat to conform to EPA ENERGY STAR®
recommended setpoints.
WAKE - 6 AM, 70°F Heat, 78°F Cool
LEAVE - 8 AM, 62°F Heat, 85°F Cool
RETURN - 5 PM, 70°F Heat, 78°F Cool
SLEEP - 10 PM, 62°F Heat, 82°F Cool
TEMPERATURE OFFSET
•0°F (default), adjustable (-5 to 5°F). Offset displayed
temperature ± 5°F.
HUMIDITY OFFSET
•0% (default), adjustable (-10 to 10%)
COMPRESSOR PROTECT
•On (default) or Off
SYSTEM TEST MODES
Installer run tests to check all cooling, heating,
emergency heating and fan outputs. Tests confirm
signals between thermostat and unit are being sent and
received.
TEST OUTPUTS
•OFF
•Y1 ON
•Y2 ON
•Y2 OFF
•W1 ON
•W1 OFF
•W2 ON
•W2 OFF
•FAN (G) ON
•FAN (G) OFF
•H ON
•H OFF
•D ON
•D OFF
•O ON (B OFF)
•B ON (O FF)
ComfortSense® 7000 Touchscreen Thermostat / Page 5
REVISIONS
Product
New catalog number - Y2081
Redesigned case
Fan button moved to “Options” tab
Dealer contact information can now scroll on the home screen
Dealer info “button” when a reminder expires
Visit us at www.lennox.com
For the latest technical information, www.lennoxdavenet.com
Contact us at 1-800-4-LENNOX
NOTE - Due to Lennox’ ongoing commitment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incurring liability.
Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury.
Installation and service must be performed by a qualified installer and servicing agency.
©2009 Lennox Industries, Inc.