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Honeywell T8635L, User Manual

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Honeywell T8635L User Manual Download Page 48

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/yourhome

Summary of Contents for T8635L

Page 1: ...1 69 1332 3 USER S GUIDE T8635L Microelectronic Communicating Programmable Thermostat 69 1332 3 ...

Page 2: ...2 69 1332 3 ...

Page 3: ...R THERMOSTAT 13 Setting System and Fan Keys 13 Setting the System Key 14 Setting the Fan Key 14 Setting Temporary Temperatures 15 Changing Temperature to Temporary Setting Until Next Schedule Period 15 Changing and Holding Temperature Setting Indefinitely 17 Changing Temperature Setting Until a Designated Day and Period Vacation Hold 18 Using the Information Key 21 Displaying Outdoor Temperature 2...

Page 4: ...perature Indicator 25 SETTING THE CLOCK 26 Set Current Day and Time 26 Daylight Saving Time 28 PROGRAMMING YOUR THERMOSTAT 29 7 Day Program and Operation 29 7 Day Preprogrammed Schedule 30 Customizing Your Own 7 Day Schedule 31 Programming the First Day 32 Copying a Day 37 Clearing a Program Period 40 TROUBLESHOOTING 42 WARRANTY 45 CUSTOMER ASSISTANCE 47 ...

Page 5: ...e 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 Compressor with the word heat pump below These features are available when used with a heat pump with auxiliary heat Tip symbol Look for helpful tips throughout the guide when you...

Page 6: ...ge the filter Information at the press of a button use the information key to see the outdoor tempera ture C7089B Outdoor Temperature Sensor optional accessory the current setpoints or the filter status 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 ...

Page 7: ...ed 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 ...

Page 8: ...DAY TIME SETS CURRENT DAY AND TIME RUN PROGRAM RETURNS THERMOSTAT TO NORMALOPERATING MODE HEAT COOL SETTINGS SWITCHES BETWEEN HEAT SETPOINTS AND COOL SETPOINTS WHILE PROGRAMMING TIME TIME SETS TIME FORWARD OR BACK HOLD TEMP SETS A HOLDTEMPERATURE SETTING AND ACTIVATES VACATION HOLD FEATURE DAYLIGHT TIME SELECTS STANDARD TIME OR DAYLIGHT SAVING TIME COPY COPIES SETTINGS FROM ONE DAY TO ANOTHER DAY ...

Page 9: ...MER EXPIRED TIME TO REPLACE FILTER DISPLAYS EITHER ROOM OR SET TEMPERATURE SHOWS CURRENT FAN KEY POSITION ON AUTO SHOWS THERMOSTAT IS CALLING FOR THE FAN SHOWS SMART RESPONSE IS OFF AND CONVENTIONAL RECOVERY IS ON 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 THAT THERMOSTAT IS CALL...

Page 10: ...s like a computer When calculat ing 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 Recovery control gradually changes the tempera ture from the energy savings setting to the comfort setting for example from a heating temperature of 62 at...

Page 11: ...t 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 Recovery 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...

Page 12: ...E THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON M17758 Mon Sleep Room System Fan Heat Auto AM Recovery Mon Sleep Room System Fan Heat Auto AM Recovery Mon Sleep Room System Fan Heat Auto AM Recovery Mon Wake Room System Fan Heat Auto AM IF In Recovery IS DISPLAYED PRESS TO SEE THE COMFORT SETPOINT 1 1 Fig 4 Explanation of Adaptive In...

Page 13: ...regular programming schedule on your last day of vacation so you are comfortable when you return and yet save energy while you are away Setting System and Fan Keys Use the System and Fan keys to change the system and fan settings The fan settings can be set for each schedule period individually The system selection is for all the schedule periods CAUTION Equipment Damage Hazard Can cause permanent...

Page 14: ...em setting in all zones For example changing the zone 1 thermostat from Heat to Cool causes all thermostats to change from Heat to Cool System Em Ht Emergency heat is controlled as stage 1 heat Cooling system is off Compressor is de energized Available only with multistage heat pump Setting the Fan Key Press Fan key until the desired mode On or Auto displays On Fan operates continuously Auto Fan o...

Page 15: ...gnated 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 setpoint displays The temporary temperature setting you select displays for approximately three seconds The display reads Temporary until the next period begins or when you cancel the temporary temperature setting ...

Page 16: ...he 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 heat and cool setpoints by one degree Press key after the desired setpoint is reached to verify the setpoints 80 9 0 70 6 0 9 ...

Page 17: ... 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 key to cancel hold Press Hold Temp key once to display the thermostat in Hold mode Example display shows temporary heat setting of 60 Hold Temp Run Program ...

Page 18: ...an Heat Auto Hold for Heat Days Setting When setting Vacation Hold at any thermostat all thermostats automati cally change to Vacation Hold except if a thermostat is already set to Hold 1 Press Hold Temp key twice IMPORTANT To cancel the Vacation Hold before the designated time press Run Program key 2 Press Time or Time until the desired number of days 1 to 255 days displays Press Hold Temp key tw...

Page 19: ...tem is set to Heat Similarly only the cooling temperature is used when the System is set to Cool The thermostat uses both the heating and cooling temperatures when the System is set to Auto Press increase or decrease key to select a new Hold temperature Example display shows temporary heat setting of 55 M14572 System Fan Heat Auto Hold for Heat Days Setting Return In this example the Hold ends aft...

Page 20: ...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 Pressed the wrong key Want to start over Don t worry You can always press to return display to normal Heat Cool Settings Run Program ZONING ZONING ...

Page 21: ...temperature if equipped Current setpoint of mode in use Heat or Cool Setpoint of mode not currently in use Displaying Outdoor Temperature Press key once to display outdoor temperature if equipped If the filter status is expired press key twice to display outdoor temperature See Filter Indicator section for instructions on resetting the filter indicator Press key once to display the outdoor tempera...

Page 22: ...tly 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 press key three times to check current temperature setpoint if equipped with outdoor sensor Press key twice to display current setpoint Example display shows cooling setpoint of 75 Cool M17761 80 9 0 70 6 0 9 0 80 70 6 0 ...

Page 23: ... on only one third of the time each day it takes three days to deduct one fan run time day Setting or Resetting Filter Indicator Your thermostat comes preset to a 30 day setting To change this setting or reset after filter expiration 1 Press Filter key to enter the Filter mode M14577 Filter Days Setting Press the Filter key to display filter information Example display shows current fan run time s...

Page 24: ... until the desired number of days displays 0 15 30 60 90 or 120 4 Press Run Program key to return to normal operation IMPORTANT To track the time the fan is running you must select a setting other than 0 0 means off If the setting is 0 days the display always shows 0 Days 0 Setting when the Filter key is pressed Run Program TIME Filter M17762A Filter Days Setting ...

Page 25: ... The Check LED indicates a failure detected with the heat pump Switch the thermostat to Em Ht and contact your heat pump service company for assistance Heating with Em Ht may be more expensive so act quickly The LED indicators light on all thermostats Remote OverrideTemperature Indicator The thermostat can communicate with a variety of system controllers If the temperature was overridden remotely ...

Page 26: ...ss 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 power loss 1 00 PM flashes on the display until a key is pressed 1 Press Set Current Day Time key Press Set Current Day Time key to show information displayed Set Current Day Time M14580 Set Day Time Mon PM ZONING ...

Page 27: ...ey until the current day displays Mon Monday Tue Tuesday Wed Wednesday Thu Thursday Fri Friday Sat Saturday Sun Sunday Day Press Day key to set the current day Example display shows Tuesday M14581 Set Day Time PM Tue Set Current Day Time M14582 Set Day Time AM Tue Press Time or Time key to set the current time Example display shows 8 15 AM Run Program TIME 80 9 0 70 6 0 9 0 80 70 6 0 80 9 0 70 6 0...

Page 28: ...e AM DST Tue Press Daylight Time key to set Daylight Saving Time Pressing Daylight Time key more than once within a five minute period scrolls you through various time options example one hour earlier or later with or without DST Pressing Daylight Time key six times in a five minute period returns you to your original setting 80 9 0 70 6 0 9 0 80 70 6 0 ...

Page 29: ...perature during the cooling season LEAVE The program period you can set for an energy saving temperature while you are away at work or school This is a lower temperature during heating season and higher temperature during cooling season and it follows the WAKE period RETURN The program period when you want the house at a comfortable temperature for activities before bedtime This is a higher temper...

Page 30: ...o plan your schedule Instructions 1 Write the time you want for each program period 2 Write the heating and cooling temperatures you want for each period 3 Draw a circle around the fan operation you desire for each period Table 1 7 Day Preprogrammed Schedule WAKE LEAVE RETURN SLEEP ALL DAYS TIME 6 00 AM FAN AUTO H 70 21 C 78 2 5 TIME 8 00 AM FAN AUTO H 62 16 5 C 85 29 5 TIME 6 00 PM FAN AUTO H 70 ...

Page 31: ...UTO ON H C TUESDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C WEDNESDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C THURSDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C FRIDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C SATURDAY TIME FAN A...

Page 32: ...etained 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 display but the schedule is retained Programming the First Day To modify the preprogrammed schedule start by programming the Wake time and temperature and fan operation for any one day 80 9 0 70 6 0 9 0 80 70 6 0 ...

Page 33: ...ey to enter the program mode Example display shows 6 00 AM on Tuesday 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 shows Monday is selected and ready to program 2 Press Day key until the desired day displays Wake ...

Page 34: ... Program Mon Wake System Fan Heat Auto AM Heat Setting 4 Press increase or decrease key until the desired Wake temperature displays The setpoint temperature range is 40 to 90 F 4 to 32 C for heating and 55 to 99 F 13 to 37 C for cooling M14590 Set Program Mon Wake System Fan Heat Auto AM Heat Setting Press increase or decrease key to select the temperature for the Wake period Example display shows...

Page 35: ...e schedule period 6 Press Heat Cool Settings key to make selections for the opposite system setting either Heat or Cool Fan Heat Cool Settings M14591 Set Program Mon Wake System Fan Heat Auto AM Cool Setting Press Heat Cool Settings key to select the cooling system if you previously set the heating temperature The current setting displays Example display shows the cooling system previously set for...

Page 36: ...s the cooling Wake period set for 76 8 Press Leave Return or Sleep and repeat steps 3 through 6 to program the entire day The day first day of a 7 day schedule is now programmed IMPORTANT Repeat steps 1 through 7 for each day of the week that has a different schedule from the first day Or refer to Copying a Day section to copy any programmed day to another day 9 Press Run Program key to return to ...

Page 37: ...he upper left corner 1 Press Wake 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 Wake System Fan Heat Auto AM Heat Setting Press Day key to select the day schedule to copy Example display shows the thermostat in program mode with Monday ready to be copied Leave Return Sleep Wake 80 9 0 70 6 0 9 0 80 70 6 0 ...

Page 38: ...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 already selected Monday schedule will be copied to Wednesday M14594 Mon ...

Page 39: ... 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 successfully copied to Wednesday Monday and Wednesday now have the same schedule Copy M14596 Run Program ...

Page 40: ... Leave Return or Sleep key to enter program mode Press Leave Return or Sleep to enter the program mode Example display shows 8 00 AM on Monday in the Leave period with Heat set for 62 M14597 Set Program Mon Leave System Fan Heat On AM Heat Setting Day M14598 Set Program Leave System Fan Heat On AM Heat Sat Setting Press Day key to select the day to begin clearing the periods Example display shows ...

Page 41: ... as necessary for all the periods to be cleared 5 Press Run Program key to return to normal operation M14599 Set Program Leave Heat Sat Setting 3 Press and hold Leave Return or Sleep key until the start time and temperature setting are cleared approximately three seconds NOTE Wake cannot be cleared Run Program Press and hold Leave Return or Sleep key to clear the period for that day Example displa...

Page 42: ...le cannot set the heating higher or the cooling lower The upper or lower temperature limits were reached Check that the temperature setpoints are Heating 40 to 90 F 4 to 32 C Cooling 55 to 99 F 13 to 37 C Heating does not come on No power to the thermostat System selection is not set to Heat Heating setpoint is below room temperature Check that setpoint is above room temperature Check if the circu...

Page 43: ...utes for the system to respond thermostat displays Wait Set System selection to Cool System on indicator for heat for cool is lit but no warm or cool air is coming from the registers Heating cooling equipment turns on the fan when the equipment has reached the preset time or temperature Wait a minute after seeing the or and then check the registers Filter is displayed and the green LED is lit Filt...

Page 44: ...blem persists call your local heating and air conditioning dealer for assistance is flashing and there is no air coming from the register When using the thermostat in zoning applications the thermostat must wait for all other zones to end their call for heat or cool before the fan request in this zone is honored Wait until all other zone heat or cool cycles are complete Heat or cool turns on befor...

Page 45: ...unction and mail it postage prepaid to the following address Honeywell Return Goods Dock 4 MN10 3860 1885 Douglas Drive North Golden Valley MN 55422 This warranty does not cover removal or reinstallation costs This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer Honeywell s...

Page 46: ...states do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you This warranty gives you specific legal rights and you may have other rights which vary from state to state If you have any questions concerning this warranty please write our Honeywell Customer Relations 1985 Douglas Drive North Golden Valley MN 55422 In Canada write Retail Products O...

Page 47: ...SISTANCE 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 ...

Page 48: ... 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 yourhome ...

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