Honeywell T8635L manual

1 69-1332—3 USER’S GUIDE T8635L Microelectronic Communicating Programmable Thermostat 69-1332-3[...]

2 69-1332—3[...]

3 69-1332—3 CONTENTS USING THIS GUIDE ............................................................................................................... ........................... 5 FEA TURES ........................................................................................................................................................ 6 KEY[...]

4 69-1332—3 Contents (Cont) Displaying Current Settings .................................................................................................... ........................ 22 Filter Indicator ............................................................................................................... ..................................[...]

5 69-1332—3 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: – T riple layer of thermostats with the word, [...]

6 69-1332—3 FEATURES • Adaptive Intelligent Recovery™ Control for comfort and energy savings. • Customize the program schedule—program your own schedule to fit your needs. •T emporary schedule override—set the thermostat higher or lower for the current program schedule. • Permanent schedule override—set the thermostat higher or lo[...]

7 69-1332—3 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 [...]

8 69-1332—3 Fig. 1. Thermostat keyboard description. M17459 Time Set Program Run Program Hold Temp Set Current Day/Time Day Heat/Cool Settings Wake Fan System Copy Daylight Time Leave Return Sleep INCREASE RAISES TEMPERATURE SETTING DECREASE LOWERS TEMPERATURE SETTING INFORMATION DISPLAYS CURRENT HEAT/COOL TEMPERATURE SETTING PROGRAM SCHEDULING W[...]

9 69-1332—3 Fig. 2. Example of thermostat display . Auto System Fan Off Auto Wake Mon Room AM Recovery Hold for Filter Days On DST Cool Tue WedThu Fri Sat Sun Leave Return Sleep Set Program Set Day/Time Wait Temporary Setting Em Heat M17756 DISPLAYS EITHER CURRENT TIME OF DAY OR PROGRAM TIMES SHOWS THERMOSTAT IS IN THE SET CURRENT DAY/TIME MODE S[...]

10 69-1332—3 ADAPTIVE INTELLIGENT RECOVERY™ CONTROL Y our new thermostat is so smart, it’s almost human. Y ou 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 house[...]

11 69-1332—3 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 c[...]

12 69-1332—3 At 4:00 AM Recovery Begins At 5:00 AM Recovery Continues At 6:00 AM Recovery Continues At 7:00 AM System Operating in Comfort Mode ENERGY SAVINGS PERIOD RECOVERY FROM ENERGY SAVINGS COMFORT PERIOD TIME TEMPERATURE THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON. M17758 Mo[...]

13 69-1332—3 OPERATING YOUR THERMOSTAT Y our new thermostat saves energy and keeps you comfortable at the same time. By now you may be wondering how to program your thermostat and how to use some more time and energy-saving features. First, let’s look at features you’ll be using often, like setting the System and Fan keys, how to override the[...]

14 69-1332—3 Setting the System Key Press the System key until the desired system (Heat, Off, Cool, or Auto) displays. Heat: The thermostat controls the heating. Off: Both the heating and cooling are of f. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between heating and cooling operation, depending on the [...]

15 69-1332—3 Setting Temporary Temperatures Y ou 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 . Y ou can also change the temperature setting until a designated day and period (for example, while you are on vaca[...]

16 69-1332—3 Press the Run Program key to cancel the temporary temperature setting before the designated time. Run Program M14564 Mon System Fan Heat Auto AM Heat Temporary After selecting a temporary setting, the display reads “T emporary” until canceled. Example display shows temporary heat setting of 70 ° at 6:00 AM. If ▲ or ▼ appears[...]

17 69-1332—3 M14565 System Fan Heat Auto Heat Setting Changing and Holding Temperature Setting Indefinitely 1. Press Hold T emp key once. 2. Press increase ▲ or decrease ▼ to change the tempera- ture setpoint, if desired. NOTE: The display changes from the setpoint to the room temperature after approximately three seconds. Press Run Program k[...]

18 69-1332—3 Changing Temperature Setting Until a Designated Day and Period (Vacation Hold) Hold Temp Press the T ime or T ime key to select the number of vacation days. Example display shows 18 vacation days. TIME M14833 Wake System Fan Heat Auto Hold for Heat Days Setting ZONING M14834 Wake System Fan Heat Auto Hold for Heat Days Setting When s[...]

19 69-1332—3 Press Wake, Leave, Return or Sleep key to select the period the Hold ends. M14571 System Fan Heat Auto Hold for Heat Days Setting Return 4. Press increase ▲ or decrease ▼ to adjust the tempera- ture setting, if desired. NOTE: Only the heating temperature is used when the System is set to Heat. Similarly , only the cooling tempera[...]

20 69-1332—3 Auto changeover is not an available feature. 5. Press Heat/Cool Settings key to change between heat and cool 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). T o cancel the V aca[...]

21 69-1332—3 Using the (Information) Key The (information) key provides information at your fingertips. The sequence of key presses is: • Outdoor temperature (if equipped). • Current setpoint of mode in use (Heat or Cool). • Setpoint of mode not currently in use. • Filter status. If the filter status is expired, refer to Filter Indicator [...]

22 69-1332—3 Displaying Current Settings Press key twice to check the current temperature setpoint. Press key three times to check the tempera- ture setpoint of the mode not currently in use. Without outdoor temperature sensor , press key once to display current setpoint; press key twice for opposite setpoint. If the filter status is expired, pre[...]

23 69-1332—3 Filter Indicator Y our thermostat monitors the time the fan is running and lets you know when to replace the filter , based on the number of fan run-time days you select. Upon expiration, the thermostat displays “Filter” and the green LED lights (on the top right of the thermostat). One fan run-time day equals twenty-four hours o[...]

24 69-1332—3 2. Press and hold the Filter key for at least three seconds to reset the fan run time. Hold down the Filter key to reset the counter . 3. Press T ime or T ime until the desired number of days displays (0, 15, 30, 60, 90, or 120 ). 4. Press Run Program key to return to normal operation. IMPORT ANT To track the time the fan is running,[...]

25 69-1332—3 LED Indicators T wo light emitting diode (LED) indicators are located on the upper right side of the thermostat. The LED indicators are clear until lighted. When the right filter expiration LED indicator lights (green), see the Filter Indication section; when the heat pump check LED indicator lights (red), see the T roubleshooting se[...]

26 69-1332—3 SETTING THE CLOCK Setting Current Day and Time Seting the time and day at one thermostat automatically sets the time and day on all thermostats. IMPORT ANT Always press the keys with your fingertip or similar blunt tool. Sharp instruments like pens and pencil points can damage the keyboard. On initial power up or after an extended po[...]

27 69-1332—3 3. Press T ime or T ime key until the current time displays. T ap the Set Current Day/T ime key to advance the time in one-hour increments. 4. Press Run Program key to return to normal operation. 2. Press Day key until the current day displays. Mon = Monday , T ue = T uesday , Wed = W ednesday , Thu = Thursday , Fri = Friday , Sat = [...]

28 69-1332—3 Daylight Saving Time NOTE: If the current time is Daylight Saving T ime, press Daylight T ime key to display “DST .” Daylight Time M14583 Set Day/Time AM DST Tue Press Daylight T ime key to set Daylight Saving T ime. Pressing Daylight T ime key more than once within a five minute period scrolls you through various time options (e[...]

29 69-1332—3 PROGRAMMING YOUR THERMOSTAT 7-Day Program and Operation Y our thermostat is 7-day programmable. 7-day programming means you can set your thermostat for four periods (W ake, Leave, Return and Sleep) and up to eight temperatures (four Heat and four Cool) for each day of the week. Each day can be the same or different. Program Periods: [...]

30 69-1332—3 7-Day Preprogrammed Schedule Y our thermostat is preprogrammed with the schedule shown in T able 1 (same schedule for all days of the week). Y ou may keep this schedule or develop your own. Before starting the programming procedure, use T able 2 to plan your schedule. Instructions: 1. W rite the time you want for each program period.[...]

31 69-1332—3 Customizing Your Own 7-Day Schedule T able 2. Y our 7-Day Schedule. W AKE LEAVE RETURN SLEEP SUNDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C MONDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TUESDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN A[...]

32 69-1332—3 About Power Outages… Don’t worry! Y our thermostat retains the schedule (preprogrammed or your own) for the life of the product. The time and day information is retained for a minimum of twenty minutes during a power outage. After a longer power outage, you may need to set the current time and day (“1:00 PM” flashes on the di[...]

33 69-1332—3 1. Press the W ake key . M14586 Set Program Wake System Fan Heat Auto AM Heat Tue Setting Press the W ake key to enter the program mode. Example display shows 6:00 AM on T uesday with Heat set to 70 ° F. M14588 Set Program Mon Wake System Fan Heat Auto AM Heat Setting Day Press Day key to select the day to program. Example display s[...]

34 69-1332—3 3. Press T ime or T ime key until the desired Wake time displays. The program times are in fifteen-minute intervals; for example, 8:00, 8:15, 8:30. Press the T ime or T ime key to select the time the W ake period will begin. Example display shows the W ake period will begin at 6:30 AM. M14589 Set Program Mon Wake System Fan Heat Auto[...]

35 69-1332—3 5. Press Fan key to modify fan operation. Selecting Auto means the fan runs only when the heating or cooling equipment is operating. Selecting On means the fan runs continuously for the entire schedule period. 6. Press Heat/Cool Settings key to make selections for the opposite system setting (either Heat or Cool). Fan Heat/Cool Setti[...]

36 69-1332—3 7. Press increase ▲ or decrease ▼ key until the desired temperature setpoint displays. M14592 Set Program Mon Wake System Fan Heat Auto AM Cool Setting Press increase ▲ or decrease ▼ to select the cooling W ake temperature. Example display shows the cooling Wake period set for 76 ° . 8. Press Leave, Return or Sleep and repea[...]

37 69-1332—3 Copying a Day The thermostat must be in the program mode to use the copy feature. Go to step 2 if the thermostat is already in the program mode (set program displays in the upper left corner). 1. Press W ake, Leave, Return or Sleep key to enter program mode. 2. Press Day key to select the day to copy from. Day M14590 Set Program Mon [...]

38 69-1332—3 3. Press Copy key . Press Copy key to copy a day schedule into memory . Example display shows Monday schedule was copied into memory . Day M14595 Mon Wed 4. Press Day key until the day to be copied to is displayed. Copy Press Day key again to select the day to copy to. Example display shows Monday and Wednesday . Because Monday was a[...]

39 69-1332—3 6. Repeat steps, as necessary , for all the periods and days desired. 7. Press Run Program key to return to normal operation. 5. Press Copy key . NOTE: “donE” displays for two seconds before the normal display returns. Press the Copy key again to complete the copy command. Example display shows “donE” . Monday schedule was su[...]

40 69-1332—3 2. Press Day key until the desired day displays. Clearing a Program Period The thermostat must be in the program mode to use the clear feature. Go to step 2 if the thermo- stat is already in the program mode (Set Program displays in upper left corner). 1. Press Leave, Return or Sleep key to enter program mode. Press Leave, Return, or[...]

41 69-1332—3 Y ou do not have to program a replacement time for the remaining periods; for example, Wake and Sleep. If you clear only the Leave and Return periods for Saturday (or any day), the thermostat remains in the W ake period for all of Saturday until the Sleep period. 4. Repeat steps, as necessary , for all the periods to be cleared. 5. P[...]

42 69-1332—3 TROUBLESHOOTING continued Symptom Possible Cause Action Display does not come on. Thermostat is not being powered. Check if the thermostat is mounted and latched on the wallplate— mount and latch the thermostat on the wallplate. Check if the circuit breaker is tripped—reset the circuit breaker. Check if the fuse at the fuse box i[...]

43 69-1332—3 continued Troubleshooting (Cont) Symptom Possible Cause Action Cooling does not come on. No power to the thermostat. System selection is not set to Cool. Cooling setpoint is above room temperature. Check that setpoint is below room temperature. Check if the circuit breaker is tripped—reset the circuit breaker. Check if the fuse at [...]

44 69-1332—3 Troubleshooting (Cont) Symptom Possible Cause Action Outdoor temperature not displayed or is incorrect. Installer did not activate this option. Outdoor sensor is connected incorrectly. Filter expired. Contact installer or service technician. Press key twice for outdoor temperature when filter ex- piration shows on display.Refer to th[...]

45 69-1332—3 WARRANTY Honeywell warrants this product, excluding battery , to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) year from the date of purchase by the consumer . If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or r[...]

46 69-1332—3 Warranty (Cont) THIS W ARRANTY IS THE ONL Y EXPRESS W ARRANTY HONEYWELL MAKES ON THIS PRODUCT . THE DURA TION OF ANY IMPLIED W ARRANTIES, INCLUDING THE W ARRANTIES OF MERCHANT ABILITY AND FITNESS FOR A P ARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONE YEAR DURA TION OF THIS WARRANTY . Some states do not allow limitations on how long [...]

47 69-1332—3 CUSTOMER ASSISTANCE After reading this guide, if you have any questions about the operation of your thermostat, please visit the Honeywell website at www .honeywell.com/yourhome. For service, contact your local heating and cooling contractor .[...]

69-1332—3 G.H. Rev . 12-01 Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers. Automation and Control Solutions Honeywell 1985 Douglas Drive North Golden Valley, MN 55422 Automation and Control Solutions Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9 www .honeywell.com/yourho[...]