III. THERMOSTAT FRONT PANEL BUTTONS
The thermostat has buttons on the front cover which are used to raise or lower the desired set point and override the cur- rent program. See Fig. 2.
A. Set Point Buttons
The UP ARROW and DOWN ARROW buttons will raise or lower the current desired temperature set point. If the ther- mostat is in AUTO mode, pressing the UP ARROW or DOWN ARROW buttons will adjust both the heating and cooling set points. Pressing the UP ARROW or DOWN ARROW buttons in Cooling mode will adjust only the cooling set points. Press- ing the UP ARROW or DOWN ARROW buttons in Heating mode will adjust only the heating set points. The UP ARROW and DOWN ARROW buttons are also used in Pro- gramming mode.
B. Override Button
The Override button is used to force the thermostat from Un- occupied mode into the Occupied 1 mode comfort settings. The Override period will be set at 30 minutes. The thermostat will then return to Unoccupied mode. To increase the amount of time in Override mode, press the Override button again. Thirty minutes of override time will be added for each time the Override button is pressed up to a maximum of 4 hours. After the
While in Override mode, the Override icon and the Occupied 1 icon will be displayed on the thermostat. The time of day and the minutes remaining in Override mode will alternate on the thermostat display.
The set points are adjustable with the UP ARROW and DOWN ARROW keys during Override mode.
NOTE: If the thermostat is in Occupied mode and the Over- ride button is pressed, the thermostat will go into Unoccu- pied mode immediately. The thermostat will remain in Un- occupied mode until the next Occupied start time.
IV. THERMOSTAT PROGRAMMING BUTTONS
The thermostat has programming buttons which are used to change the set points of the thermostat, set the modes, and program schedules. The programming buttons are acces- sible from underneath the thermostat cover. To access the pro- gramming buttons, pull on the hinged thermostat cover. See Fig. 3. The programming buttons are: Mode, Fan, Holiday, Program, and Set Clock.
The UP ARROW and DOWN ARROW buttons are used to scroll through programming set points. The buttons are also used to answer yes or no.
A. Keypad Lock
The thermostat has a keypad lockout feature which will not acknowledge front panel buttons until the lockout sequence is entered. To disable or lock the keypad, press and hold the Mode button. While holding down the Mode button, press the UP and DOWN ARROW buttons simultaneously. The ``Locked'' icon will appear on the display.
The thermostat is unlocked by performing the same proce- dure. Press and hold the Mode button. While holding down the Mode button, press the Up and Down Arrow buttons simultaneously. The ``Locked'' icon will be removed from the display.
B. Fan Button Operation
The Fan button selects fan operation. When the fan is set to FAN ON, the fan will run continuously for improved air circulation.
Fig. 2 Ð Thermostat Front Panel Buttons
Fig. 3 Ð Thermostat Programming Buttons
NOTE: When the thermostat is in Unoccupied mode, the fan will run only during heating or cooling operation, even if the fan is set to FAN ON; this is the
When the fan is not set to FAN ON (no icon displayed on ther- mostat screen), the fan will run during heating and cooling operation only.
C. Mode Button Operation
The Mode button selects the operating mode of the thermo- stat. If OFF is selected, the thermostat will not enter Heat- ing or Cooling mode. If HEAT is selected, the thermostat will only enter Heating mode (if the room temperature is below the heating set point). If COOL is selected, the thermostat will only enter Cooling mode (if the room temperature is above the cooling set point). If AUTO is selected, the thermostat will enter Heating or Cooling mode based on the room tempera- ture and the heating and cooling set points. If PROGRAM ON is selected, the stored schedule is enabled and the ther- mostat will follow the Occupied and Unoccupied schedules stored in its memory.
When the thermostat mode is set to AUTO, the thermo- stat will provide automatic changeover from Heating to Cool- ing mode and Cooling to Heating mode when required. The thermostat will automatically switch to maintain the desired temperature setting. The thermostat does not need to be manu- ally changed from heating to cooling or cooling to heating operation.
D. Holiday Mode
The Holiday button places the thermostat into Holiday mode. During Holiday mode, the unoccupied set points are enforced. The number of days the thermostat will be in Holi- day mode can be set.
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