Lennox International Inc. 81M28 - Manual (Page 20)

20
More Detailed Information on the USER SETTINGS
SECURITY SETTINGS
In order to prevent tampering with the program and your desired settings, two levels of security are
available.The first will allow only temporary changes to the temperature. It protects all other pro-
grammed setpoints. The second will restrict changes to EVERYTHING, including temporary
changes to the temperature.
SECURITY CODE
In this screen you enter a four-digit code. Use the UP or DOWN button to change the first value,
press SELECT. The second digit will be highlighted. Repeat for all four values. And don’t forget your
code. If you do, you will have to reset the entire thermostat and that will erase all the schedules
you’ve programmed into the unit.
NOTE: After entering the security code to unlock the thermostat, the code will need to be re-entered
to secure the thermostat after changes are made.
When would I need to change the USER settings?
About the only features you may need to change are the temperature differentials (if you desire additional comfort) and the security settings.
All the other settings probably will not need to be changed.
USER MENU SELECT
CHANGE TEMP. ONLY
PREVENT ALL CHANGES
SECURITY
USER MENU SELECT
ENTER SECURITY CODE
FOR TEMPERATURE
0 0 0 0
110-1052F 5/12/05 11:59 AM Page 20