TXU Energy iThermostat Technical manual

TXU Energy
iThermostat™
Online User Guide

Copyright March 2008
Data, drawings, and other material contained herein are proprietary to Comverge, Inc., and may not be reproduced
or duplicated in any form without the prior permission of Comverge, Inc.
iThermostatTM is a trademark of TXU Energy.
iThermostatTM is manufactured in partnership with Comverge, Inc. and White-Rodgers.
Portions © 2008 TXU Energy Retail Company LLC. All rights reserved. REP Certificate Number 10004.

iThermostatTM Online Programming Guide 1
Getting Started with Your iThermostat™
Logging On
1. Turn on your computer and open your web browser (Internet Explorer is
preferred).
2. Go to http://www.txu.com/iThermostat.
3. A login screen will load, prompting you for your username and password as
shown to the right. Your username will be your email address registered with
TXU Energy. Your initial password is listed on your Welcome Letter.
4. The first time you log in, you will be required to specify a new password. This
password must be at least 7 characters and contain at least one uppercase letter,
one lower case letter, one number, and one special alphanumeric character (i.e.
&, -, #, ...). This format is required for your security.
5. If you are unable to access the site the first time, double check the username and password entered. If you are still
unable to access the site, please contact us at 1-866-733-1807 to resolve this issue.

iThermostatTM Online Programming Guide 2
Changing Your Password
1. If you need to change your password again after the first time you’ve logged in, click on the “Profile” tab
near the top of the screen.
2. Enter and confirm your new password using the entry fields provided. Click “Change Password.”

iThermostatTM Online Programming Guide 3
Scheduling Overrides
1. Click on the “Control Override” tab towards the top of the screen.
2. Fill in the date you wish to override your system either by clicking on the calendar icon or entering the date
in the MM/DD/YYYY format in the top, empty field. Previously scheduled override dates will be listed below a
blank entry field, along with their status and an option to cancel the event.
3. Click the “New” button to the right to schedule the override.

iThermostatTM Online Programming Guide 4
Programming Heat
1. The first screen that will appear when you log in will be the “Heat Mode Settings” tab. This screen
enables you to set your daily time period schedules and desired temperature set points for your heating
system, as shown below:
2. The first time you log in to the system, default values will appear in all of the temperature and time
settings, regardless of what you may have already programmed manually into your thermostat.
Important note: Hitting the “Save” button will erase your current schedule on the thermostat and replace
it with the one you have programmed. It is important to verify all the settings; especially the first time
you use the system, to ensure that they match your desired settings.

iThermostatTM Online Programming Guide 5
3. The top pull down menu will prompt you to “Select a day.” Your thermostat groups weekdays into one
setting and Saturdays and Sundays individually into a second and third setting. Select which day or
group of days you would like to program.
4. Program the start time of each period of the day (Morning, Day, Evening, and Night) by using the pull
down menus. Each period must begin after the previous period has begun. Be sure to note the AM and
PM pull down menu to avoid any confusion.
5. Program your desired temperature set point for each period using
the up/down arrows to the right of each temperature setting field.
You may also select the text with your mouse cursor and type in
your setting if you find this method easier.
6. Once you have programmed each period, move on to the next day
or group of days by selecting a new day using the top pull down
menu. Repeat the above instructions until each day is completed.
If you have more than one thermostat installed, an additional row of pull down menus will appear
underneath the first. Follow the same instructions to program additional thermostats.
7. Click on the “Save” button to save your settings.

iThermostatTM Online Programming Guide 6
Programming Cool
1. Click on the “Cool Mode Settings” tab near the top of the screen.
2. Follow instructions 2 through 7 under the “Programming Heat” section, except entering your preferred
cooling set points into the “Setpoint” fields as opposed to your preferred heating set points.

iThermostatTM Online Programming Guide 7
Vacation Settings
Your TXU Energy iThermostatTM enables you to set your system to one thermostat setting for a range of
days. Using this feature will temporarily override your existing program.
1. Click on the “Vacation Mode Settings” tab near the top of the screen.
2. Click on the calendar icon to choose your start and stop dates, enter the start and stop date times, and the
corresponding temperature you would like your home set to during this entire period.
3. Click on the Cancel button to stop the vacation program.