Lennox ComfortSense5500 User manual

User Guide
Color Touchscreen
Programmable Residential
Thermostat
ComfortSense®5500
Model: 13H13
507500-01
10/2015
Supersedes 7/2015

2
TABLE OF CONTENTS
Features 2...................................
Temperature Dial Indicator 3....................
Home Screen 4...............................
Accessing Mode Screen 9......................
Select Modes 10.............................
Fan Operation 10.............................
Menu 11......................................
Notifications 12...............................
Performance Report 14........................
Edit Schedules 14............................
User Settings 16.............................
Features
The ComfortSense®5500 Series thermostat is an
electronic 7-day, single-stage, programmable,
touchscreen thermostat. Features are:
SLarge, clear color display that shows the
current and set temperatures and time.
SErgonomic design.
SSmooth Set Recovery starts system early to
achieve setpoint at start of program period.
SCompressor short-cycle protection (5
minutes).
SReal-time clock keeps time during power
failures and automatically adjusts for daylight
savings time and leap year.
SProgram hold options allow user to override
the program schedule as desired by time and
date.
SSelect individual days or groups of days to set
programming.
SProgrammable fan offers increased
performance when combined with whole
home indoor air quality products.

3
Temperature Dial Indicator
2:31 am
heat−to
cool−to
78
inside
heat/cool
away
72°
78°
0
ⒸⒷ Ⓐ
Ⓔ
Ⓓ
Ⓕ
Figure 1. Temperature Dial Feature
A. This is the heating set point indicator on the
dial. This object will be red in color.
B. This is the cooling set point indicator on the
Dial. This object will be blue in color.
C. This is the location where no system demand
will be active. In figure 1, the example would be
any temperature between 73°F and 77°F.
D. When there is an active call for heating, this
area of the dial will fade back and forth from
white to red.
E. When there is an active call for cooling, this
area of the dial will fade back and forth from
white to blue.
F. The yellow line indicates the actual room
temperature on the temperature dial indicator.

4
Home Screen
2:31 am
heat−to
cool−to
inside
schedule 1
away
62°
76°
X
0
Ⓒ
Ⓑ
Ⓘ
Ⓐ
ⒺⒻ
Ⓖ
Ⓗ
Ⓓ
Ⓔ
Ⓕ
78
waiting
Schedule hold
until 12:30 pm
Figure 2. Home Screen

5
Touch the screen anywhere - the first touch turns
on the backlight.
A. OPERATING MODES - Touch the screen to
see a list available modes. Selectable modes
are heat/cool, heat only, cool only,
emergency heat, off, schedule 1, schedule
2, and schedule 3. In addition fan operation
can be set to on, auto or circulate.
B. AWAY - Touch the screen here to set the
desired heating and/or cooling mode
temperatures when you will be away from
home.
Touch cancel to exit this screen and return to
the home screen and normal system
operations.
cancel
C. Displays current time.
D. Menu - Touch the screen here to access
notifications, performance report, edit
schedules and settings screens.
E. Touch the heating set point indicator to set
the heat-to (if enabled) temperature. Touching
either the heating set point indicator or
heat-to will display the temperature setting
detail screen (see figure 3). Use the -and +
icons to adjust the temperature setting. The
temperature dial will change from white to red
when heating is active.
F. Touch the cooling set point indicator to set
the cool-to (if enabled) temperature. Touching
either the cooling set point indicator or
cool-to will display the temperature setting
detail screen (see figure 3). The temperature
dial will change from white to red when heating
is active. Use the -and +icons to adjust the
temperature setting. The temperature dial will
change from white to blue when cooling is
active.

6
Figure 3. Temperature Setting Detail Screen
G. The current indoor temperature is displayed
here.
H. System Status Icons - Equipment operation
information appears along the left side of the
home screen. The displayed icons will indicate
cooling or heating demand, cooling compressor
delay, or cooling demand.
I. This icon and the text that follows it indicate that
the schedule is on hold either until the next
time period or permanently.
1. Place the schedule on hold by touching on
either the heat-to or cool-to location on the
main screen. If an adjustment is required for
the temperature setting, this can be done
now.

7
2. To continue touch on any blank area of the
screen.
3. From the override setting screen, the
options are 1 hour, 2 hour or Permanent.
Make selection and then touch set.
NOTE: When a permanent hold has been
selected, the thermostat will not return to
the schedule program unit the hold is
released. The screen will display schedule
hold permanent.
4. To exit a permanent schedule hold, touch
the Ⓧ icon
NOTE: For the 1 or 2 hour setting the home
screen will indicate schedule hold until
time indicated (i.e., 11:57 pm).
NOTE: When in any hold status, the mode
status area on the screen will go to the
current status mode. For example, from
schedule 1 to heat/cool.
J. System Status Icons - Equipment operation
information appears along the left side of the
home screen to indicate the current system
status: humidification, transitioning operating
mode, waiting (compressor delay), emergency
heat and transitioning next schedule setting.

8
Table 1. System Status Icons
Screen Icon Description
The red flame icon is displayed when the system is in heating mode.
The blue flame icon is displayed when the system is cooling mode.
waiting The snow flake icon indicates that the next mode of operation will be cooling. The
words waiting next to the icon indicate that system operation is waiting for the comple
tion of the 5-minute default compressor delay.
+The red flame icon with a plus sign indicates that the system is running in emergency
heat mode.
The schedule icon indicates that the system is transitioning to the next scheduled
temperature setting. This icon will only appear if smooth setback recovery is enabled
during installer setup. When enabled, the system will begin recovery up to two hours
before the programmed time to reach the programmed temperature at the programmed
event time. The system will recover 12°F per hour for gas/electric heating and 6°F per
hour for first-stage compressor-based cooling. When smooth set back recovery is
disabled, the control will start recovery at the programmed time set in the schedule.

9
Accessing Mode Screen
Touch the screen in the area indicated below to access the mode screen.
2:31 am
heat−to
cool−to
78
inside
schedule 1
away
72°
78°
0
Figure 4. Home Screen (Accessing Mode Screen)

10
SELECT MODES
1. HEAT/COOL allows the thermostat to switch
between heating and cooling automatically.
2. HEAT ONLY allows only heating demand.
3. COOL ONLY allows only cooling demand.
4. OFF indicates system has been turned off.
5. EMERGENCY HEAT allows heat pump
system to use a secondary heat source to
come on and reach the desired user
temperature setting faster.
6. SCHEDULES (1, 2 or 3) See Edit Schedules
on page 14 for customizing schedules).
7. ON, AUTO and CIRCULATE - Three fan
operation modes are available: ON, AUTO
and CIRCULATE. A green check mark
indicates the selected setting.
FAN OPERATION
In the CIRCULATE mode, the user can cycle the
fan for a programmed period of operation each
hour during periods when the heating or cooling
equipment is not running.
Table 2. Fan Operation
on
Fan is NOT following
the schedule and runs
continuously until it is
changed from the se
lect mode.
auto
Fan will follow the fan
setting in the selected
schedule.
circulate
Fan follows schedule
and cycles during
periods of equipment
inactivity.
Circulate off time is
dependent on user
settings. See page 16
on how to set the
circulate off time.