Lennox ComfortSense 5500 Assembly instructions

ComfortSense®5500 507501-02
6/2018
Supersedes 5/2017
Installation and Setup Guide

2
Table of Contents
Shipping and Packing List 2.....................
Description 3..................................
Dimensions (H x W x D) 3......................
Wall Plate Dimensions (H x W) 3.................
Compressor Short Cycle Protection 3.............
Installation 4..................................
Installation Setup 4............................
Wiring thermostat 8............................
Installer Settings 10.............................
Menu 10.......................................
System Setup 11...............................
Residual Cool 11...............................
Deadband 11..................................
Smooth Set Recovery (SSR) 11..................
Dealer Information 11...........................
Stage 1 Diff 11.................................
Temperature Offset 11..........................
Compressor Protect 11..........................
Custom Reminders 12...........................
Reset Settings 12...............................
Energy saving Default 12........................
System Test Modes 12..........................
Unit Part (Catalog) & Serial Numbers 13...........
Memory Protection 13...........................
Diagnostic Information 14........................
Reminder Information 15.........................
Supported Configurations 15.....................
Installation Checklist 16..........................
Shipping and Packing List
1 - ComfortSense
®5500 touchscreen, 7-day pro
grammable thermostat with back plate
1 - Wall plate
2 - Mounting screws (M3.5x25mm self-tapping
screws)
2 - Wall anchors
1 - Warranty certificate
1 each - Homeowner and Installer Guides
NOTE - This thermostat is equipped with automatic
compressor protection to prevent potential damage
due to short cycling or extended power outages.
The short cycle protection provides a 5-minute
delay between heating or cooling cycles to prevent
the compressor from being damaged.
IMPORTANT
Read this manual before programming the ther
mostat.
Use this thermostat only as described in this man
ual.
Description
The ComfortSense®5500 thermostat (Catalog No.
13H13) is an electronic 7-day single‐stage program
mable touch screen thermostat. It also offers en
hanced capabilities which include:
Sworry-free memory storage feature

3
Smenu-driven touch-screen display
Sequipment maintenance reminders
This thermostat supports single-stage non-heat
pump units.
Dimensions (H x W x D)
Case dimensions: 3-5/16 x 4-5/16 x 7/8 in. (84 x 110
x 22mm)
Wall Plate Dimensions (H x W)
Plate dimensions: 4-1/2” x 5-3/4” (114 x 146mm)
Compressor Short Cycle Protection
A 5-minute compressor short cycle protection timer
begins when a compressor output is de-energized.
Also, if a power loss occurs, the system will go into
compressor protection mode and will display a snow
flake icon and the word “waiting” next to it if there is a
cooling compressor call.
WARNING
Improper installation, adjustment, alteration, ser
vice or maintenance can cause property damage,
personal injury or loss of life.
Installation and service must be performed by a
licensed professional HVAC installer (or equiva
lent) or service agency.
CAUTION
This is a 24VAC low-voltage thermostat. Do not
install on voltages higher than 30VAC.
Do not short (jumper) across terminals on the gas
valve or at the system control to test installation.
This will damage the thermostat and void the war
ranty.
IMPORTANT
In all applications, the ComfortSense®Model
5500 thermostat can only be used with all resi
dential units and approved commercial split‐sys
tem matches, and those which meet the following
installation criteria:
Sinstallation uses 18 GAUGE thermostat
wire or larger,
Sthermostat wire run length DOES NOT EX
CEED 300' (91m),
Sload from any thermostat connection is 1
AMP or LESS.

4
WARNING
Always turn off power at the main power source
by switching the circuit breaker to the OFF posi
tion before installing or removing this thermostat.
All wiring must conform to local and national build
ing and electrical codes and ordinances.
Installation
Before beginning installation, note the type of equip
ment, number of stages, and any accessories being
installed. This thermostat is a 24VAC low-voltage
thermostat and requires a common wire to the ther
mostat to operate.
DO
SShut off all power to system before installing.
SRead this entire document, noting which in
structions pertain to your equipment and sys
tem requirements.
SMake sure that all wiring conforms to local and
national building and electrical codes and ordi
nances.
SEnsure load from any thermostat connection is
less than 1 AMP.
DO NOT
SInstall on voltages higher than 30VAC.
SShort (jumper) across terminals on the gas
valve or at the system control to test installa
tion. This will damage the thermostat and void
the warranty.
SInstall on outside walls or in direct sunlight.
SExceed thermostat wire run length greater
than 300 feet (91m).
Installation Setup
1. Unpacked the thermostat and open the case
with a thin-blade screwdriver. Place between
wall base and unit and twist to separate unit
from base.
2. Select a location for the thermostat about 5 feet
(1.5m) above the floor in an area with good air
circulation at average temperature.
3. Do not install the thermostat where it can be af
fected by:
SDrafts or dead spots behind doors and
in corners.
SNot close to entrance or automatic
doors.
SNot close to heat generating equipment
such as kitchen equipment.
SNot in an enclose environment unless a
remote indoor sensor is used.
SHot or cold air from ducts.

5
SRadiant heat from sun or appliances.
SConcealed pipes and chimneys.
SUnheated (uncooled) areas such as an
outside wall behind the thermostat.
Figure 1. Removing Back Plate
4. Use steps Athrough J (step Japplicable when
using provided wall plate) to install the thermo
stat.
CUT OR DRILL A SMALL HOLE
FOR THERMOSTAT WIRING
¾” x ¾”
A
B
PULL ABOUT 3” OF THERMOSTAT
WIRE THROUGH OPENING AND RE
MOVE OUTER THERMOSTAT WIRE
JACKET.
THIS WILL HELP IN
ROUTING THE THER
MOSTAT WIRING TO
THE PROPER THER
MOSTAT TERMINALS

6
1/4”
TRIM 1/4” INSULATION FROM
END OF EACH WIRE
C
USE UNIT WALL PLATE AS TEMPLATE TO MARK
DESIRED MOUNTING HOLE LOCATIONS ON WALL.
D
(USE A LEVEL) ALIGN WALL PLATE
DRILL 3/16” HOLES AT MARKED LOCATIONS
ON WALL FOR ANCHORS
E
NOTE: INSTALLATION OF WALL PLATE IS
OPTIONAL.

7
Thermostat Installation with Wall Plate
F- Place wall plate
over holes in wall.
G- Insert wall anchors
through wall plate into wall.
H - Attach back plate
to wall plate.
I- Insert provided screws through back and wall
plates into wall anchors.
J- Attach thermostat to
back plate.
Thermostat Installation without Wall Plate
G- Place back plate over wall
anchors in wall.
F- Insert wall anchors
through wall plate into wall.
H- Insert provided screws through
back plate into wall anchors.
I- Attach thermostat to
back plate.

8
Wiring thermostat
1. Connect wiring between thermostat, indoor
unit, and outdoor unit as shown in the appropri
ate wiring diagram.
2. Seal the hole in the wall with a suitable material
to prevent drafts from entering the thermostat
case.
3. Configure thermostat and equipment for sys
tem type (gas or electric heat), program the
thermostat, and test system.
TERMINAL DESIGNATIONS
C - Common 24 VAC
G - Fan relay
W1 - 1st stage heating (electric or gas heat)
Y1 - 1st stage cooling
R - 24VAC power
TYPICAL COOL ONLY SYSTEM
TYPICAL CONVENTIONAL SINGLE-STAGE
HEAT / COOL SYSTEM
1
1

9
TYPICAL HEAT ONLY
SYSTEM
1
1

10
Installer Settings
menu
performance report
notifications 13
edit schedules
settings
Figure 2. Installer Menu Screen
Menu
1. Touch menu option from the home screen.
2. Touch and hold the settings option on the
menu. This will display the installer settings
notice and then menu.
installer settings
confirm
<
installer settings must be set
by qualified person.
Figure 3. Installer Menu Screen Confirmation
3. Available options are as follows:
<installer settings
system setup >
residual cool >
dead band >
smooth set recovery >
contact information >
stage 1 diff >
temperature offset >
compressor protect >
custom reminder >
reset setting >
energy saving default >
system test mode >