T8635L Microelectronic Communicating Programmable Thermostat USER'S GUIDE 1 69-1332-4 69-1332--4 CONTENTS USING THIS GUIDE .......................................................................................................................................... FEATURES ........................................................................................................................................................ KEYBOARD AND DISPLAY DESCRIPTION .................................................................................................... Keyboard ............................................................................................................................................................ Display ............................................................................................................................................................... 5 6 7 7 7 ADAPTIVE INTELLIGENT RECOVERYTM CONTROL ..................................................................................... 10 Optimum Comfort and Energy Savings ............................................................................................ 11 OPERATING YOUR THERMOSTAT ................................................................................................................. Setting System and Fan Keys ............................................................................................................................ Setting the System Key .................................................................................................................................. Setting the Fan Key ........................................................................................................................................ Setting Temporary Temperatures ....................................................................................................................... Changing Temperature to Temporary Setting Until Next Schedule Period .................................................... Changing and Holding Temperature Setting Indefinitely ................................................................................ Changing Temperature Setting Until a Designated Day and Period (Vacation Hold) ..................................... Using the (Information) Key ......................................................................................................................... Displaying Outdoor Temperature .................................................................................................................... 3 13 13 14 14 15 15 17 18 21 21 69-1332--4 Contents (Cont) Displaying Current Settings ............................................................................................................................ Filter Indicator .................................................................................................................................................... Setting or Resetting Filter Indicator ................................................................................................................ LED Indicators ................................................................................................................................................... Remote Override Temperature Indicator ............................................................................................................ SETTING THE CLOCK ...................................................................................................................................... Set Current Day and Time ................................................................................................................................. Daylight Saving Time ......................................................................................................................................... PROGRAMMING YOUR THERMOSTAT .......................................................................................................... 7-Day Program and Operation ........................................................................................................................... 7-Day Preprogrammed Schedule ................................................................................................................... Customizing Your Own 7-Day Schedule ........................................................................................................ Programming the First Day ............................................................................................................................ Copying a Day ................................................................................................................................................ Clearing a Program Period ............................................................................................................................. TROUBLESHOOTING ....................................................................................................................................... WARRANTY ...................................................................................................................................................... CUSTOMER ASSISTANCE ............................................................................................................................... 4 22 23 23 25 25 26 26 28 29 29 30 31 32 37 40 42 45 47 69-1332--4 USING THIS GUIDE The T8635L is a multi-functional thermostat. This means it can be used in several different ways such as single or multi-zone applications, conventional furnaces or heat pump equipment. The following symbols will help you identify the features that apply to your system: ­ Triple layer of thermostats with the word, zoning, below. These features are available when more than one thermostat is connected and used with the optional W8703 Damper Interface Module, W8635A, B Equipment Interface Modules, or with the W8835 EnviraZone System. ZONING ­ Compressor with the word, heat pump, below. These features are available when used with a heat pump. HEAT PUMP 70 80 60 90 90 70 80 ­ Tip symbol. Look for helpful tips throughout the guide when you see this symbol. 60 5 69-1332--4 FEATURES · Adaptive Intelligent RecoveryTM Control for comfort and energy savings. · Customize the program schedule--program your own schedule to fit your needs. · Temporary schedule override--set the thermostat higher or lower for the current program schedule. · Permanent schedule override--set the thermostat higher or lower indefinitely. · Vacation mode (1 to 255 days) for added comfort and energy savings. Set the temperature higher or lower for energy savings while on vacation. At the same time, set the comfort level you want when you return. · Set the filter indicator (0, 15, 30, 60, 90, or 120 days) to remind you to change the filter. · Information at the press of a button--use the (information) key to see the outdoor temperature (C7089B Outdoor Temperature Sensor optional accessory), the current setpoints, or the filter status. 6 · No batteries needed--your thermostat retains the schedule for the life of the product. You never have to reprogram the schedule even after a power outage. (You may need to reset the day and time after an extended power outage.) · Daylight Time key for quick time changes between Daylight and Standard time. · Backlit display for improved readability--set the backlight feature for backlighting on demand (press any key to activate) or continual backlighting. Ask your installer to program this feature. · Optional outdoor temperature display--ask your installer to install an outdoor temperature sensor to activate this feature. 69-1332--4 KEYBOARD AND DISPLAY DESCRIPTION Keyboard The keyboard is located behind the thermostat cover. Three frequently used keys, increase or decrease and , are located next to the display. See Fig. 1. Display The thermostat displays important information such as day, time, schedule period, temperature, filter information, system and fan operation. See Fig. 2. 7 69-1332--4 TIME / TIME SETS TIME FORWARD OR BACK SET CURRENT DAY/TIME SETS CURRENT DAY AND TIME WAKE SET WAKE TIMES AND TEMPERATURES LEAVE SET LEAVE TIMES AND TEMPERATURES DIGITAL DISPLAY INCREASE RAISES TEMPERATURE SETTING DECREASE LOWERS TEMPERATURE SETTING INFORMATION DISPLAYS CURRENT HEAT/COOL TEMPERATURE SETTING AND OUTDOOR TEMPERATURE (WHEN INSTALLED). RETURN SET RETURN TIMES AND TEMPERATURES Run Program Set Current Day/Time Wake Leave Return Sleep RUN PROGRAM RETURNS THERMOSTAT TO NORMAL OPERATING MODE DAY SETS DAY OF THE WEEK HOLD TEMP SETS A HOLD TEMPERATURE SETTING AND ACTIVATES VACATION HOLD FEATURE DAYLIGHT TIME SELECTS STANDARD TIME OR DAYLIGHT SAVING TIME COPY COPIES SETTINGS FROM ONE DAY TO ANOTHER DAY FOR QUICKPROGRAMMING M17459A Time Hold Temp Day Heat/Cool Settings Set Program Filter System Fan SLEEP SET SLEEP TIMES AND TEMPERATURES PROGRAM SCHEDULING WAKE LEAVE RETURN SLEEP ENTERS PROGRAMMING MODE FAN SELECTS AUTO/ON SYSTEM SELECTS HEAT/OFF/COOL (AUTO) Daylight Time Copy HEAT/COOL SETTINGS SWITCHES BETWEEN HEAT SETPOINTS AND COOL SETPOINTS WHILE PROGRAMMING FILTER SELECTS FILTER TIMER REMINDER PERIOD (0, 15, 30, 60, 90, 120 DAYS) Fig. 1. Thermostat keyboard description. 8 69-1332--4 SHOWS THERMOSTAT IS PROCESSING INFORMATION AND WAITING TO CALL FOR HEAT OR COOL SHOWS SMART RESPONSE IS CHANGING THE TEMPERATURE TO MEET THE CURRENT PROGRAM SHOWS VACATION HOLD DURATION SHOWS FILTER TIMER EXPIRED (TIME TO REPLACE FILTER) SHOWS CURRENT DAY OR DAYS BEING PROGRAMMED SHOWS CURRENT PROGRAM PERIOD OR PERIOD BEING PROGRAMMED SHOWS WHEN THERMOSTAT IS IN THE PROGRAMMING MODE SHOWS THERMOSTAT IS IN THE SET CURRENT DAY/TIME MODE SHOWS TEMPERATURE SETTING CHANGED FOR THIS PROGRAM PERIOD SHOWS TEMPERATURE DISPLAYED IS THE CURRENT SET TEMPERATURE SHOWS THAT THERMOSTAT IS CALLING FOR HEAT OR COOL SHOWS CURRENT SYSTEM KEY POSITION HEAT/OFF/COOL SHOWS CURRENT FAN KEY POSITION ON/AUTO Wait Set Program Set Day/Time Temporary Setting AM Recovery Hold for Filter Days Room MonTueWedThuFriSatSun Wake Leave Return Sleep DST SHOWS SYSTEM ON DAYLIGHT SAVING TIME SHOWS TEMPERATURE DISPLAYED IS THE CURRENT ROOM TEMPERATURE SHOWS SMART RESPONSE IS OFF AND CONVENTIONAL RECOVERY IS ON DISPLAYS EITHER ROOM OR SET TEMPERATURE System Em Heat Off Cool Auto Fan On Auto SHOWS THERMOSTAT IS CALLING FOR THE FAN SHOWS THERMOSTAT TEMPERATURE IS BEING SET REMOTELY DISPLAYS EITHER CURRENT TIME OF DAY OR PROGRAM TIMES M17756 Fig. 2. Example of thermostat display. 9 69-1332--4 ADAPTIVE INTELLIGENT RECOVERYTM CONTROL Your new thermostat is so smart, it's almost human. You perceive temperature from a variety of sources, not only from the air in the room, but also from your surrounding walls, windows and furnishings. Humans feel differences in temperature as slight as two degrees Fahrenheit. Common household thermometers and standard thermostats sense only air temperature, which may not reflect how hot or cold the room actually feels to you. Your new thermostat reads both the temperature of the wall and in the air, and responds to temperature changes as little as one degree Fahrenheit, so room temperature is more likely to feel right to you and your family. The thermostat acts like a computer. When calculating the time to turn on your heating or cooling system, it considers air temperature, wall temperature, and the time you want to reach the comfort temperature. After considering these three things, Adaptive Intelligent 10 RecoveryTM control gradually changes the temperature from the energy savings setting to the comfort setting (for example, from a heating temperature of 62° at night to 70° in the morning). The system runs continuously until the comfort temperature you choose is reached without overshooting the setting. This saves energy. How do you know when the system is in recovery? The thermostat displays "Recovery" whenever the thermostat activates Adaptive Intelligent RecoveryTM control. See Fig. 3. "Recovery" displays during the recovery time from Sleep to Wake and from Leave to Return. System Em Heat Recovery AM Fan Mon Sleep Room Heat Auto M14561 Fig. 3. Example of "Recovery" indication. 69-1332--4 After installation or new schedule programming, your thermostat learns from experience. Each day it checks how closely it hit the recovery target (for example, 70° at 6:00 AM) and adjusts the next day's recovery start time accordingly. After four to eight days, the thermostat has adjusted to local weather, your lifestyle, the construction of your home, and your heating and cooling system. Optimum Comfort and Energy Savings In Fig. 4, Adaptive Intelligent RecoveryTM control starts to recover at 5:00 AM and reaches the comfort temperature of 68° at 6:30 AM. Recovery time varies with the starting temperature and the comfort temperature you choose. 11 69-1332-- ...