Lennox ComfortSense 7000 series User Manual

05/09 506229−01
*2P0509* *P506229-01*
E2009 Lennox Industries Inc.
Dallas, Texas, USA
S Tabbed user interface with
touch screen interaction
S Humidification measurement
and control
S Soft blue backlighted screen
with adjustable brightness
S Programmable or
non−programmable options
S Equipment maintenance
reminders
S Automatically changes
between heating cooling
HOMEOWNER’S MANUAL
ComfortSense
®
7000 Series
Model L7742U Touch Screen Programmable Thermostat
CONTROLS
506229−01
05/09
Supersedes 04/09
Table of Contents
ComfortSense
®
7000 Series Model L7742U Thermostat 2. . .
Display Fields & Touch Screen Points 3. . . . . . . . . . . . . . . . . .
Home ScreenCurrent Conditions & Temperature Settings 4
Controlling the Heat/Cool Modes of Operation 5. . . . . . . . . . .
Controlling the Fan Operation 6. . . . . . . . . . . . . . . . . . . . . . . . .
Controlling the Schedule 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Schedule ScreenProgramming 8. . . . . . . . . . . . . . . . . . . . . .
Options screenReminders & User Settings 9. . . . . . . . . . . .
Humidification 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dehumidification 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Humiditrol
®
EDA Accessory 13. . . . . . . . . . . . . . . . . . . . . . . . . .
Temporary Temperature ChangePause the Schedule 14. . .
Remote Outdoor Sensor 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Protection 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Litho U.S.A.

Lennox ComfortSense 7000 series Specifications

General

Display Type	Color Touchscreen
Wi-Fi Connectivity	Yes
Humidity Control	Yes
Indoor Humidity Display	Yes
Warranty	5-Year Limited Warranty
Touchscreen	Yes
Programmability	7-day programmable
Stages	Up to 2 heating and 2 cooling stages
Power Method	24V
Features	Smart Away Mode

Summary

Touch Screen Display Overview

Home Screen Functionality

Controlling Heat and Cool Modes

Fan Operation and Programming

Fan Modes Selection

Explains how to select fan modes: AUTO, ON, and CIRC.

Fan Program Settings

Details fan programming options during program events and overrides.

Schedule Control

Programming the Schedule

Programming Complexity Levels

Explains the different levels of complexity for programming days and events.

Options Screen: Reminders and Settings

User Settings Configuration

Access to settings like backlight, date/time, and security lock.

Service Reminders Setup

Setup and management of service reminders like filter changes.

Humidification Settings

Basic and Precision Humidity

Adjusts relative humidity setpoint between 15% and 45%.

Dewpoint Adjustment

Adjusts humidification setpoint based on outdoor temp and dew point.

Dehumidification Features

Humiditrol EDA Accessory

Details settings for the Humiditrol® EDA accessory.

Temporary Schedule Changes

Temporary Hold (Schedule ON)

How to make temporary temperature changes while schedule is active.

Permanent Hold (Schedule OFF)

How to make permanent temperature changes when schedule is off.

Optional Remote Outdoor Sensor

Memory Protection

Service Reminders