Commercial
Touchscreen Thermostat
OWNER’S GUIDE
505,104M
12/2005
©2005 Lennox Industries, Inc.
Dallas, Texas, USA
Commercial
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CONTENTS
Features ..................................................................................................................... 3
Main Screen Selections ...............................
............................................................... 4
Programming Heating and Cooling Schedule ............................................................ 6
Operating the Thermostat .......................................................................................... 10
Replacing Batteries .................................................................................................... 15
Cleaning Thermostat Screen ...................................................................................... 18
Reading Outdoor Temperature ................................................................................... 20
Reading Remote Indoor Temperature ........................................................................ 19
Advanced Settings ..................................................................................................... 26
Frequently Asked Questions and Answers ................................................................ 30
IMPORTANT
The thermostat has a touch screen interface. Touch keys appear, as necessary, to
complete tasks. Always press the screen with
a fingertip. Sharp instruments like a
pen or pencil point can damage the thermostat.
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FEATURES
time are easy to read and all are displayed on the main screen.
S Menu Driven Programming-Provides guidance through the scheduling process,
showing only necessary information and choices on each screen.
S Ability to Select Multiple Days-allows easy customizing for unique schedules.
daylight savings.
S Armchair Programming-can remove thermostat from wall to set the schedule.
S Precise Temperature Control (+1°F)-reliable, consistent comfort.
S Multiple OVERRIDE options-can modify schedule indefinitely or for a specific
period of time.
S Programmable Fan-increases indoor air quality when combined with air
cleaning equipment.
S Outdoor Temperature Indication-displays current outdoor temperature to help
plan outdoor activities.
NOTE: The main screen can differ slightly, depending on the heating, ventilation and air
conditioning (HVAC) system and the thermostat settings for the system type.
S Real-Time Clock-keeps time during power failure; automatically updates for
S Large, Clear Display with Backlighting-current temperature, set temperature and
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Main Screen Selections
SCHEDULEHOLIDAYCLOCKSCREEN OVERRIDE
TUE
AM
FAN
AUTO
SYSTEM
HEAT
Following
Schedule
Inside
M22748A
FAN
SELECTS
ON/AUTO
SYSTEM
SELECTS
HEAT/OFF/
COOL/AUTO
SCHEDULE
ENTERS
SCHEDULING MODE
HOLIDAY
CHANGES TEMPERATURE
SETTING FOR DESIGNATED
NUMBER OF DAYS
SCREEN
LOCKS OUT THE SCREEN TO
ALLOW FOR CLEANING
CLOCK
SETS THE TIME FORWARD OR BACK
UP ARROW
RAISES
TEMPERATURE
SETTING
DOWN ARROW
LOWERS
TEMPERATURE
SETTING
OVERRIDE
SET TEMPORARY
OVERRIDE
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Main Screen Display
SCHEDULE HOLIDAY CLOCKSCREENOVERRIDE
TUE
AM
FA N
AUTO
SYSTEM
HEAT
Following
Schedule
Inside
M22749
FAN
SHOWS FAN
SETTING
TUE
SHOWS CURRENT
DAY OF THE WEEK
SYSTEM
SHOWS CURRENT
SYSTEM POSITION
TIME
DISPLAY CURRENT
TIME OF DAY, HOLD
TIME REMAINING
OR NUMBER OF
HOLIDAY DAYS
REMAINING
INSIDE TEMPERATURE
SHOWS THE CURRENT INSIDE TEMPERATURE
SET TO
TEMPERATURE
SHOWS THE
CURRENT
SET
TEMPERATURE
FOLLOWING
SCHEDULE
SHOWS THE
THERMOSTAT IS
FOLLOWING THE
PROGRAMMED
SCHEDULE
Occupied
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Programming Heating and Cooling Schedule
The thermostat can control up to four different schedule periods per day:
OCC 1-Work arrival time. Period to keep space at a comfortable temperature.
UNOCC1-Work exit time. Period to keep space at an energy-saving temperature.
OCC 2
−Second occupied period.
UNOCC2
NOTE: Available schedule times are at 15-minute intervals.
Editing Schedule
1.
Press SCHEDULE.
2.
Press EDIT.
NOTES:
¿ The first time a change is
made, the screen appears
mostly blank.
¿ Multiple days can be selected.
3.
Select any combination of days to
edit.
NOTE: Checkmarks appear next to
selected days. These are
scheduled with identical times and temperatures.
CANCEL
MON
OK TO PICK MULTIPLE DAYS
M19954
−Second unoccupied period.
S
S
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4.
Press OCC 1. Once pressed, OCC 1 flashes to show it is selected.
5.
Press Up and Down to modify time
and temperatures from this screen.
NOTE: Fan settings for the selected
period can be programmed for
ON or AUTO. See Fan Schedule
section for more information.
6. Press UNOCC1 and repeat step 5.
NOTE: With default settings, only
OCC 1 and UNOCC1 can
be configured. To use
OCC 2 and UNOCC2, enter
the Installer Setup and
change the appropriate
parameter.
7.
Press OCC 2 and repeat step 5.
8.
Press UNOCC2 and repeat step 5.
MON
AM
FAN
ON
AUTO
CANCEL
PERIOD
HEAT
COOL
OK TO PICK MULTIPLE DAYS
M22750
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9.
When complete, press DONE.
SAVING CHANGES appears on the
screen to indicate changes are being
saved to the day(s) modified.
NOTE: To schedule the remaining days
of the week, repeat steps 1-9.
10.
To exit schedule without saving
changes, press CANCEL any time.
Cancelling a Schedule Period
NOTE: To accommodate special needs,
a period can be cancelled.
For example, if the space is always unoccupied during the weekend, cancel all
Saturday and Sunday (occupied and unoccupied) periods. The thermostat then
controls to the final Friday UNNOC temperature until the Monday OCC 1 period.
1.
Press SCHEDULE.
2. Press EDIT.
3.
Select the Day(s) of the week desired.
4. Press the schedule period to cancel (OCC 1, UNOCC1, OCC 2 or UNOCC2). Once
selected, the period flashes.
MON TUEWEDTHUFRI
SAVING
CHANGES
M22751
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5.
Press CANCEL PERIOD. The time,
temperature(s) and fan setting
disappear. The bar above the
selected period is removed,
indicating the scheduled period
was cancelled.
NOTE: To reinstate a schedule period,
press an arrow to set desired time
and temperatures.
6. Press DONE.
CANCEL
MON
FAN
HEAT
COOL
OK TO PICK MULTIPLE DAYS
M22752
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