Lennox International Inc l7742u owner manual ComfortSense 7000 Series Model L7742U Thermostat

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ComfortSense® 7000 Series Model L7742U Thermostat

The ComfortSense® 7000 Series Model L7742U thermostat is an elec- tronic 7−day, universal, multi−stage, programmable, touch screen ther- mostat. It also offers enhanced capabilities including humidification / dehumidification / dewpoint measurement and control, Humiditrol® EDA (Enhanced Dehumidification Accessory) control, and equipment maintenance reminders.

SLarge, clear display with soft blue backlight shows the current and set temperature, day/date/time, indoor relative humidity and out- door temperature (if optional outdoor sensor is used).

SDehumidification measurement and control

SHumiditrol® EDA capability

SDew point adjustment control

SMenu−driven programming guides user through the scheduling process showing only necessary information on each screen.

SErgonomic design.

SSmooth Setback Recovery starts system early to achieve set- point at start of program period.

SCompressor short−cycle protection (5 minutes).

SReal−time clock keeps time during power failures and automati- cally adjusts for daylight savings time and leap year.

SMaintenance reminders let user know when to service or replace filters, humidifier pads, ultraviolet lamps, plus two user or installer defined custom reminders.

SProgram Hold options allow user to override the program sched- ule 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.

SOutdoor temperature display (with optional outdoor sensor) shows current outdoor temperature.

Your installer has set up your thermostat based on the type of heating and cooling system and accessories that your thermostat connects to. This booklet details user settings available to you that will give you as much functionality and control as you want.

506229−01 05/09

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Contents ComfortSense 7000 Series ComfortSense 7000 Series Model L7742U Thermostat Touch Screen Display TouchHome Screenemperature Settings Home ScreenOperating Information Faults, Errors, and Service InformationControlling the Heat/Cool Modes of Operation Fan Modes Controlling the Fan OperationControlling the Schedule Fan ProgramFull WeekO Schedule tabProgramming Complexity Programming process 7 timesAction Display shows Schedule ScreenDays & Events Programming process ENTER. Use arrows to change to C press Save User Settings Options TAB User Settings EnterOptions Screen For Contact INFO, select on or OFF then press Save Options tabDisplay Info FAN CirculateCooling Limit Humidity SettingHumiditrol Adjust Heating LimitHumidify HumidificationBasic & Precision OFFDehumidification Accessory EDAITY Settings press ENTER. Press the box below Dehumidify Humiditrol Enhanced DehumidificationTemporary Temperature Change Temporary Temperature Changes schedule onMemory Protection Service RemindersOptional Remote Outdoor Sensor

l7742u, comfortsense 7000 series touch screen programmable thermostat specifications

Lennox International Inc. is renowned for its innovative heating, ventilation, and air conditioning (HVAC) solutions, and the ComfortSense 7000 Series Touch Screen Programmable Thermostat, model L7742U, stands as a testament to its commitment to energy efficiency and user-friendly design. This advanced thermostat combines cutting-edge technology with an intuitive interface, making it an ideal choice for homeowners looking to enhance comfort while managing energy costs.

One of the standout features of the ComfortSense 7000 Series is its large, easy-to-read, full-color touch screen display. This enables users to navigate the thermostat’s settings and programming options effortlessly. The interface is designed to provide clear visibility, even in low light conditions, ensuring that managing your home’s climate is straightforward at any time of day.

The thermostat allows for flexible programming, accommodating up to four separate time periods in a single day, which can be customized for heating and cooling settings. This programmable feature means users can optimize their HVAC usage according to their daily schedules, leading to potential energy savings and increased comfort when they need it most.

Another significant characteristic of the L7742U model is its compatibility with a wide range of heating and cooling systems. This versatility enables homeowners to integrate the thermostat with both conventional and advanced HVAC systems, including heat pumps and multi-stage units, which enhances its appeal across various applications.

The ComfortSense 7000 Series also includes smart features that allow for remote access. When connected to Wi-Fi, users can adjust their home’s temperature settings from their smartphones or tablets using the Lennox mobile app. This feature is particularly valuable for homeowners who want to make adjustments while away from home, ensuring that indoor conditions remain pleasant upon their return.

Moreover, the thermostat is designed with energy efficiency in mind. It utilizes advanced technologies, such as energy usage reports and reminders for regular maintenance checks, empowering users to take charge of their energy consumption. This can lead to reduced utility bills and a smaller environmental footprint.

In conclusion, the Lennox ComfortSense 7000 Series Touch Screen Programmable Thermostat, model L7742U, is a sophisticated yet user-friendly device that enhances the overall efficiency and comfort of home environments. Its advanced programming capabilities, smart technologies, and compatibility with various HVAC systems make it a smart choice for today’s energy-conscious homeowners. With Lennox’s commitment to quality, users can expect reliability and performance that meets the demands of modern living.
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