Lennox ComfortSense 5500 User manual

User Guide
Color Touchscreen
Programmable Thermostat
ComfortSense®5500 (13H13)

2
TABLE OF CONTENTS
Features 2....................................
Temperature Dial Indicator 3....................
Home Screen 5................................
Selection Mode 9..............................
Menu Screen 11...............................
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 cur
rent and set temperatures and time.
SErgonomic design.
SSmooth Setback Recovery starts system
early to achieve setpoint at start of program
period.
SCompressor short-cycle protection (5 min
utes).
SReal-time clock keeps time during power fail
ures 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 perfor
mance when combined with whole home in
door air quality products.

3
Temperature Dial Indicator
2:31 am
heat−to
cool−to
80
inside
heat/cool
away
72°
78°
Schedule hold
until next period
X
waiting 0
Ⓒ
Ⓑ
Ⓐ
Ⓔ
Ⓓ
Ⓕ
Figure 1. Temperature Dial Feature

4
A. This is the maximum heat position indicator
on the dial. This object will be red in color.
B. This is the maximum cool position indicator
on the Dial. This object will be blue in color.
C. This is the location area where no system de
mand is 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 tem
perature on the temperature dial indicator.

5
Home Screen
2:31 am
heat−to
cool−to
inside
heat/cool
away
72°
78°
Schedule hold
until next period
X
0
Ⓒ
Ⓑ
Ⓘ
Ⓐ
Ⓘ
ⒺⒻ
Ⓖ
Ⓗ
Ⓓ
Ⓔ
Ⓕ
80
waiting
Figure 2. Home Screen

6
Press the screen anywhere - the first press turns
on the backlight.
A. OPERATING MODE - press to access the
screen that will list available modes. Selectable
modes are heat/cool, heat only, cool only, off,
schedule 1, schedule 2, and schedule 3. In
addition fan operation can be set to on, auto or
circulate.
Heat and Cool (Auto-changeover)
Heat Only
Cool Only
Following a schedule
off System if off
B. AWAY - Selecting AWAY will allow the user to
set the heating and/or cooling mode tempera
tures when away from home.
Press cancel to exit this screen and return
to the home screen and normal system op
erations.
cancel
C. Displays current time.
D. Menu - This will allow access to notifications,
performance report, schedules and set
tings.

7
E. This allows you to set the heat-to (if enabled)
temperature.Selecting the heat-to or tempera
ture dial position indicator will take you to the
temperature setting detail screen. The temper
ature dial will change from white to red when
heating is active.
F. This allows you to set the cool-to (if enabled)
temperature. Selecting the cool-to or temper
ature dial position indicator will take you to
the temperature setting detail screen. The dial
will change from white to blue when cooling is
active.
G. Displays the current indoor temperature.
H. Indicates the schedule is on hold until the next
time period or permanent.
1. Place the schedule on hold by pressing on
either the heat-to or cool-to location on the
screen. If an adjustment is required for the
temperature setting, this can be done now.
2. After approximately three seconds the
screen will display the override setting op
tions.
3. From the override setting screen, the op
tions are 1 hour, 2 hour or Permanent.
Make selection and then press set.
4. For the 1 or 2 hour setting the home screen
will indicate schedule hold until time indi
cated(i.e., 11:57 pm). To exit schedule hold,
press Ⓧ.
5. For the permanent setting the screen will in
dicate schedule hold permanently.To exit
schedule hold, press Ⓧ.
I. System Status Icons - Equipment operation
information appears along the left side of the
home screen. The displayed icons will indicate
heating demand, cooling compressor delay,
cooling demand or transitioning to next sched
ule setting (see table 1).

8
Table 1. System Status Icons
Red flames indicates the system is heating.
waiting
Snow flake indicates the next mode of operation will be cooling. Waiting indi
cates there is a compressor delay which is by default 5 minutes and not ad
justable.
Blue flames indicates the system is cooling.
Transitioning to next schedule setting.

9
Selection Mode
Press anywhere in the area indicated below to select how the system will operate.
2:31 am
heat−to
cool−to
78
inside
schedule 1
away
72°
78°
0
Figure 3. Home Screen (Accessing Mode Screen)

10
OPERATING 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. SCHEDULES (up to three can be set),
FAN-ON, AUTO and CIRCULATE (see Edit
Schedules on page 13 for customizing
schedules).
6. ON, AUTO and CIRCULATE - Select by
pressing the desired fan operation ON, AU
TO and CIRCULATE. When selected a green
check mark will be indicated.
If FAN mode AUTO, ON or CIRCULATE was se
lected during scheduling for the current period, the
thermostat will indicate the current fan mode in the
information display (FAN ON or FAN CIRC).
In the CIRCULATE mode, the user can cycle the
fan for a programmed period time of active time per
hour during periods of equipment inactivity (i.e.,
heating or cooling equipment not running).
Table 2. Fan Operation
on
Fan is NOT following the
schedule and runs contin
uously until it is changed
from the select mode.
auto
Fan will follow the fan set
ting in the selected sched
ule.
circu
late
Fan is following schedule
and cycles during periods
of equipment inactivity.
Circulate off time is
dependent on user
settings.