While in Override mode, the Override icon and the Oc- cupied 1 icon will be displayed on the thermostat. The time of day and the minutes remaining in Override mode will al- ternate 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.
KEYPAD LOCK Ð 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 key- pad, 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 pro- cedure. 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.
MODE BUTTON OPERATION Ð The Mode button se- lects the operating mode of the thermostat. If OFF is se- lected, the thermostat will not enter Heating 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 temperature and the heat- ing and cooling set points. If PROGRAM ON is selected, the stored schedule is enabled and the thermostat will follow the Occupied and Unoccupied schedules stored in its memory.
Auto-Changeover Ð When the thermostat mode is set to AUTO, the thermostat will provide automatic changeover from Heating to Cooling 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 manually changed from heating to cooling or cooling to heating operation.
NOTE: It is recommended that auto-changeover mode not be used if the outdoor temperature is consistently lower than 50 F (10 C) or greater than 80 F (27 C). In these cases, select Heating or Cooling mode only.
Set Clock Ð The Set Clock function allows the user to change the time and day displayed on the thermostat. Press and hold the Mode and Override buttons for 2 seconds to enter Set Clock mode. See Fig. 3. The current time will blink on and off. Press the UP ARROW or DOWN ARROW but- ton until the correct time is shown. Hold down the buttons to quickly move through the time display. The AM and PM annunciators will automatically change. To scroll through by hours only, press and hold the Override button while press- ing the UP or DOWN ARROW button. To ensure the sched- ules are properly followed, make sure that AM or PM is cor- rect for the time chosen. When the correct time is shown, press the Mode button to modify the day of the week. The current day will blink on and off. Press the UP ARROW or DOWN ARROW button until the correct day is shown. Press and hold the Mode and Override buttons for 2 seconds again to exit the Set Clock mode.
Fig. 3 Ð Setting the Clock
Programming Thermostat Schedules Ð Be- fore programming the thermostat, plan the thermostat daily schedule. The schedule is divided into 3 days (Saturday, Sun- day, and Monday through Friday). The daily schedule for Monday through Friday is the same. Each day can have 2 (Occupied 1, Unoccupied), 3 (Occupied 1, Occupied 2, Un- occupied), or 4 (Occupied 1, Occupied 2, Occupied 3, Un- occupied) time periods. Each occupied time period has a start time, stop time, heating set point, and cooling set point. The Occupied 1 and Unoccupied temperature set points are the same for each day. The unoccupied time period has a heat- ing set point and a cooling set point. The unoccupied time period is active whenever an occupied time period is not ac- tive. Fill in Table 1 on page 3 as an aid to programming the daily schedules.
PROGRAMMING MODE Ð To program the daily sched- ules, perform the following procedure:
1.Enter programming mode by pressing and holding the Mode and UP ARROW buttons. The Occupied 1 annun- ciator will appear on the thermostat display. See Fig. 4. Use the UP ARROW and DOWN ARROW buttons to set the maximum number of Occupied periods avail- able. The thermostat can be set to 1, 2, or 3. After the number of Occupied periods has been selected, press the Mode button.
2.The cooling set point for Occupied 1 will be displayed. Use the UP ARROW and DOWN ARROW buttons to raise or lower the cooling set point until the desired tem- perature is shown. The range of acceptable values is 35 to 99 F (1 to 37 C). Press the Mode button to continue. See Fig. 4.
3.The heating set point for Occupied 1 will be displayed. Use the UP ARROW and DOWN ARROW buttons to raise or lower the heating set point until the desired tem- perature is shown. The range of acceptable values is 35 to 99 F (1 to 37 C). Press the Mode button to continue. See Fig. 4.
4.The cooling set point for Unoccupied will be displayed. Use the UP ARROW and DOWN ARROW buttons to raise or lower the cooling set point until the desired tem- perature is shown. The range of acceptable values is 35 to 99 F (1 to 37 C) or ``OF'' (no unoccupied cooling). To con®gure to ``OF,'' press UP ARROW when display is showing ``99.'' Press the Mode button to continue.
5.The heating set point for Unoccupied will be displayed. Use the UP ARROW and DOWN ARROW buttons to raise or lower the heating set point until the desired tem- perature is shown. The range of acceptable values is 35 to 99 F (1 to 37 C) or ``OF'' (no unoccupied heating). To con®gure to ``OF,'' press DOWN ARROW when dis- play is showing ``35.'' Press the Mode button to continue.
