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®
T8665A Chronotherm IV
Wireless Thermostat
USER’S GUIDE
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CONTENTS USING THIS GUIDE .......................................................................................................................................... 5 FEATURES ........................................................................................................................................................ 6 KEYBOARD AND DISPLAY DESCRIPTION .................................................................................................... 7 Keyboard ........................
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Contents (Cont) Using the (Information) Key ......................................................................................................................... 23 Display Current Setting ................................................................................................................................. 23 Display or Reset Filter Timer Settings .......................................................................................................... 24 SETTING THE CLOCK..
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90 60 80 70 USING THIS GUIDE The T8665A is a multi-functional thermostat. This means it can be used in single or multi-zone applications. 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 TM than one thermostat is used with the W8665E RF Zone Panel. ZONING –Tip symbol. Look for helpful tips throughout the guide when you see this symbol. 5 69-1536–3 70 80 60 90
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FEATURES TM • Adaptive Intelligent Recovery Control for comfort • Information at the press of a button—use the and energy savings. (information) key to see the current setpoints. • Customize the program schedule—program your • Daylight Time key for quick time changes between own schedule to fit your needs. Daylight and Standard time. • Temporary schedule override—set the thermostat • Backlit display for improved readability – backlight- higher or lower for the current program schedule. ing on de
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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, system and fan operation. See Fig. 2. 7 69-1536–3
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WAKE LEAVE DIGITAL INCREASE TIME / TIME DISPLAY RAISES TEMPERATURE SETTING SETS TIME SET WAKE TIMES AND SET LEAVE TIMES AND FORWARD OR BACK TEMPERATURES TEMPERATURES DECREASE SET CURRENT LOWERS TEMPERATURE SETTING DAY/TIME SETS CURRENT DAY AND TIME INFORMATION DISPLAYS CURRENT HEAT/COOL TEMPERATURE SETTING RUN PROGRAM RETURNS THERMOSTAT TO RETURN NORMAL OPERATING MODE SET RETURN TIMES AND TEMPERATURES Time Set Program DAY SLEEP Run Set Current SETS DAY OF THE W
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SHOWS SHOWS THERMOSTAT IS SHOWS WHEN SHOWS SHOWS TEMPERATURE TEMPERATURE PROCESSING INFORMATION THERMOSTAT THERMOSTAT DISPLAYED IS THE CURRENT SETTING CHANGED AND WAITING TO CALL FOR IS IN THE IS IN THE SET TEMPERATURE FOR THIS HEAT OR COOL PROGRAMMING SET CURRENT PROGRAM MODE DAY/TIME MODE SHOWS THAT THERMOSTAT PERIOD SHOWS ADAPTIVE IS CALLING FOR TM INTELLIGENT RECOVERY IS CHANGING THE System TEMPERATURE TO MEET Wait Set Program Set Day/Time Temporary Setting THE CURRENT Heat SH
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TM Recovery control gradually changes the tempera- ADAPTIVE INTELLIGENT ture from the energy savings setting to the comfort TM setting (for example, from a heating temperature of RECOVERY CONTROL 62° at night to 70° in the morning). Your new thermostat is so smart, it’s almost human. The system runs until the comfort temperature you You perceive temperature from a variety of sources, choose is reached without overshooting the setting. not only from the air in the room, but also from your This sa
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After installation or new schedule programming, your Optimum Comfort and Energy Savings thermostat learns from experience. Each day it TM In Fig. 4, Adaptive Intelligent Recovery control starts checks how closely it hit the recovery target (for to recover at 5:00 AM and reaches the comfort example, 70° at 6:00 AM) and adjusts the next day’s temperature of 68° at 6:30 AM. Recovery time varies recovery start time accordingly. After four to eight with the starting temperature and the comfort temp-
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At 7:00 AM System Operating in Comfort Mode System Heat AM At 6:00 AM Fan Mon Room Recovery Wake Auto Continues System Heat Recovery AM Fan Mon Room At 5:00 AM Sleep Auto Recovery Continues System Heat 1 Recovery AM Fan Mon Room Sleep Auto At 4:00 AM Recovery Begins System Heat Recovery AM Fan Mon Room Sleep Auto ENERGY COMFORT RECOVERY FROM ENERGY SAVINGS SAVINGS PERIOD PERIOD TIME THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON.
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OPERATING YOUR THERMOSTAT Your new thermostat saves energy and keeps you Setting System and Fan Keys comfortable at the same time. By now you may be Use the System and Fan keys to change the system wondering how to program your thermostat and how and fan settings. The fan settings can be set for each to use some more time and energy-saving features. schedule period individually. The system selection is for all the schedule periods. First, let’s look at features you’ll be using often, like settin
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Setting the System Key Setting the Fan Key Press the System key until the desired Press Fan key until the desired mode System Fan system (Heat, Off, Cool, or Auto) displays. (On or Auto) displays: Heat: The thermostat controls the heating. On: Fan operates continuously. Off: Both the heating and cooling are off. Auto: Fan operates only when heating Cool: The thermostat controls the cooling. or cooling. Auto: The thermostat automatically changes between heating and cooling operation, displays w
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Setting Temporary Temperatures You can override the current schedule period to temporarily change the temperature setting until the next schedule period, or you can change and hold the temperature setting indefinitely. You can also change the temperature setting until a designated day and period (for example, while you are on vacation). Changing Temperature to Temporary Setting Until Next Schedule Period Press increase ▲ or decrease ▼ until the desired temperature Temporary Setting setpoint disp
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90 60 80 70 Press the Run Program key to cancel the temporary System Temporary Heat temperature setting before the designated time. Run Program AM Fan Mon Auto Heat M14564 After selecting a temporary setting, the display reads “Temporary” until canceled. Example display shows temporary heat setting of 70° at 6:00 AM. If ▲ or ▼ appears under the temperature display, it means that both the heating and cooling setpoints are being adjusted. Tapping the increase ▲ or decrease ▼ key changes both the
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Changing and Holding Temperature Setting Indefinitely 1. Press Hold Temp key once. Hold Temp System Setting Heat 2. Press increase ▲ or decrease ▼ to change the tempera- ture setpoint, if desired. Fan Heat Auto NOTE: The display changes from the setpoint to the M14565 room temperature after approximately three seconds. Press Hold Temp key once to display the thermostat in Hold mode. Example display shows temporary heat setting of 60°. Run Press Run Program key to cancel hold. Program 17 69-1536–
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Changing Temperature Setting Until a Designated Day and Period (Vacation Hold) When setting Vacation Hold in a zone System Setting system, set all thermostats indepen- Heat dently to Vacation Hold. ZONING Hold for Days Fan Hold Temp 1. Press Hold Temp key twice. Wake Heat Auto M14833 Press Hold Temp key twice to display the thermostat in Vacation IMPORTANT mode. Example display shows temporary heat setting of 60°. To cancel the Vacation Hold before the designated time, press Run Program key. Sy
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Press Wake, Leave, Return or Sleep key to select the System period the Hold ends. Setting Heat Wake Leave Return Sleep Hold for Days Fan Return Heat Auto M14571 th In this example, the Hold ends after the 18 day at the beginning of the Return period. 4. Press increase ▲ or decrease ▼ to adjust the tempera- System Setting ture setting, if desired. Heat Hold for NOTE: Only the heating temperature is used when Days the System is set to Heat. Similarly, only the Fan cooling temperature is used whe
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Heat/Cool 5. Press Heat/Cool Settings key to change between heat and cool settings. Settings 6. Press increase ▲ or decrease ▼ to adjust the temperature setting, if desired (for example, if cool is set at 84°, cooling equipment operates when the room temperature is above 84°F). To cancel the Vacation Hold before the designated time, press Run Program key at each thermostat. ZONING Pressed the wrong key? Want to start over? Don’t worry! Run Program You can always press to return display to no
