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Delmarva Power Web-Programmable Thermostat Homeowner’s Manual 11
DDWTMS1317B—Delmarva Power IT900 Thermostat Manual
(Version 2 Thermostat with New Screen Shots)
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DDWTMS1317B
Delmarva Power IT900 Thermostat Manual (Version 2 Thermostat with New Screen Shots)
Job Opened: November 1, 2013
Requested In-Home Date: December 1, 2013
Latest Revision: November 5, 2013
Approved: December 4, 2013
• To Temporarily Unlock the Thermostat:
a. Press the MENU key to go directly to the Enter PIN Number
screen.
b. Press or to choose which digit is highlighted and
or to increase or decrease the number. Press UNLOCK and
your thermostat will return to the home screen.
c. If the correct PIN number is entered, the thermostat will return to
the home screen and allow the user to make changes as needed.
If the wrong PIN number is entered, the screen at the right will
appear:
• To Permanently Unlock the Thermostat:
a. Follow the steps to temporarily unlock the thermostat (above).
b. Follow the steps to lock the thermostat (see page 10), but enter
0000 to clear the lock code.
c. Press DONE to save the change.
8. Thermostat Settings – Comfort/Economy
This option is only available if you have a multi-stage heating, central air
conditioning, or heat pump system.
• In Comfort mode (default), the higher stages of the heating or
cooling system will be initiated when you modify the temperature
setpoint three degrees or more.
• In Economy mode, the thermostat will analyze when the higher
stages are needed for heating or cooling in order to economize
energy usage.
The thermostat will lock after two minutes of keypad inactivity.
Setting the PIN number to 0000 will allow any user full access to
your thermostat.
13_DDWTMS1317B_IT900_v2_TSTAT_MANUAL-CFO-120413.indd 11 12/4/13 9:41 AM