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To ensure the schedules are properly followed, make sure that AM or PM is correct for the time chosen. When the correct time is shown, press the End button to exit the Set Time mode. V. RESET FILTER The Reset Filter function is used to clear the “Clean Filter” icon on the display screen. The Reset Filter function is initiated by pressing the Hold and Occupied buttons simultaneously. The “Clean Filter” icon reminds the user when it is time to change or clean the filter of the unit. VI. PROGRAMMING THERMOSTAT SCHEDULES Before programming the thermostat, plan the thermostat daily schedule. The schedule is divided into 7 days (Monday through Sunday). Each day has 4 time periods (OC1, UN1, OC2, UN2). Each time period has a start time, heating set point, and cooling set point. Fill in Table 1 on page 4 as an aid to programming the daily schedules. When choosing the times for OC1, UN1, OC2, and UN2, the following rules must be followed: • The maximum number of hours allowed from OC1 to UN1, or from OC2 to UN2 is 12 hours. For example, if OC1 has a value of 6:00 AM and UN1 had a value of 5:00 PM, this would be acceptable. If however, OC1 has a value of 6:00 AM and UN1 has a value of 7:00 PM, this would not be acceptable because the difference is greater than 12 hours. • The value of UN2 must be greater than or equal to the value of OC2, while the value of OC2 must be greater than or equal to the value of UN1, and the value of UN1 must be greater than or equal to OC1. For example, acceptable values would be: OC1 UN1 OC2 UN2 6:00 AM 5:00 PM 5:00 PM 10:00 PM In the example above, the thermostat will be occupied from 6:00 AM to 10:00 PM. However, if the following values were entered, the thermostat would not be occupied as one may expect: OC1 UN1 OC2 UN2 6:00 AM 7:00 PM 6:00 PM 12:00 AM In the new example, the thermostat will display UN2 from 12:00 AM to 6:00 AM, then OC1 from 6:00 AM to 6:00 PM, then OC2 from 6:00 PM to 7:00 PM, then UN1 from 7:00 PM to 12:00 AM. The thermostat, in this example, would be occupied from 6:00 AM to 7:00 PM because OC2 has a value less than the value of UN1. A. Programming Mode To program the daily schedules, perform the following procedure: 1. Enter Programming mode by pressing the Program button. The PROGRAMMING annunciator will appear on the thermostat display. The current day of the schedule will be displayed and the current programming time period of that day will be displayed. The TIME annunciator will flash. NOTE: If a programming button is not pushed for 2 minutes, the thermostat will exit Programming mode and any changes made will be saved. 2. Press the Up and Down buttons to set the start time for the schedule day and period shown. 3. Press the Set Time/Temp button once the correct time is shown. The TIME annunciator will stop flashing and the HEAT annunciator will flash. 4. The heating and cooling set points can now be programmed. The HEAT and COOL annunciators will flash for the heating and cooling set points respectively. The Set Time/Temp button is used to toggle between the time, heating, and cooling set points. Use the Up and Down buttons to raise and lower the temperature set points. NOTE: There must be at least 2 degrees difference between the cooling and heating set points. The thermostat will automatically change any set points closer than 2 degrees. —2— AUTO HOLD EHEAT Fan ON PROGRAMMING Mo Tu We Th Fr Sa Su OC1 UN1 OC2 UN2 TIME AM PM AUX HT CLEAN FILTER COOL AUTO Mode OFF HEAT COOL Mo Tu We Th Fr Sa Su OC1 UN1 OC2 UN2 TIME AM PM AUX HT CLEAN FILTER COOL AUTO Mode OFF HEAT COOL Fig. 1 — Thermostat Liquid Crystal Display FAN Programmable Thermostat ENDCHANGE DAY MODEPROGRAMCOPY PREVIOUS DAY HOLDOCCUPIEDSET TIME/TEMP CHANGE DAY BUTTON COPY PREVIOUS DAY BUTTON PROGRAM BUTTON MODE BUTTON UP BUTTON DISPLAY SCREEN THERMOSTAT SET TIME/TEMP OCCUPIED END RESET FILTER HOLD FAN DOWN COVER (OPEN) BUTTON BUTTON BUTTON (PRESS BUTTON BUTTON BUTTON SIMULTANEOUSLY) Fig. 2 — Thermostat Display and Programming Buttons —3— 5. Press the Program button to advance to the next time period. 6. Perform Steps 2 through 5 until the times and temperature set points have been entered for the entire day. Press the Change Day button to move to the schedule for the next day. 7. Repeat Steps 2 through 6 to program the remaining schedule days. The Copy Previous Day button can be used to copy the previous day’s schedule if the schedules are the same. 8. After all the times and set points for each day have been entered, press the End button to finish entering the schedule. NOTE: The thermostat will continue to follow the schedule until a new one is entered. The schedule may need to be updated for different seasons or prolonged changes in temperature. VII. OVERRIDING THE SCHEDULE The schedule can be overridden in three ways, the Hold button can be pressed to lock in the current temperature setting, the Up or Down buttons can be pressed to change the desired temperature, or the Occupied button can be press...

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