Honeywell T8665A1002 - Digital Thermostat, 3h User Manual
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Honeywell T8665A1002 - Digital Thermostat, 3h User Manual

Wireless thermostat
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T8665A Chronotherm
IV
Wireless Thermostat
USER'S GUIDE
69-1536-3
1
69-1536–3
Table of Contents
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Summary of Contents for Honeywell T8665A1002 - Digital Thermostat, 3h

  • Page 1 ® T8665A Chronotherm Wireless Thermostat USER’S GUIDE 69-1536-3 69-1536–3...
  • Page 2 69-1536–3...

  • Page 3: Table Of Contents

    CONTENTS USING THIS GUIDE ............................FEATURES ................................ KEYBOARD AND DISPLAY DESCRIPTION ....................Keyboard ................................Display ................................ADAPTIVE INTELLIGENT RECOVERY CONTROL ..................10 Optimum Comfort and Energy Savings ......................11 OPERATING YOUR THERMOSTAT ......................... 13 Setting System and Fan Keys ..........................13 Setting the System Key ..........................
  • Page 4 Contents (Cont) Using the (Information) Key ......................... 23 Display Current Setting ..........................23 Display or Reset Filter Timer Settings ......................24 SETTING THE CLOCK ............................25 Set Current Day and Time ..........................25 Daylight Saving Time ............................27 PROGRAMMING YOUR THERMOSTAT ......................28 7-Day Program and Operation ...........................

  • Page 5: Using This Guide

    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 than one thermostat is used with the W8665E RF Zone Panel.

  • Page 6: Features

    • Vacation mode (1 to 255 days) for added comfort circulation and air cleaning when a Honeywell wholehouse air cleaner is installed. and energy savings. Set the temperature higher or lower for energy savings while on vacation.

  • Page 7: Keyboard And Display Description

    KEYBOARD AND DISPLAY DESCRIPTION Keyboard The keyboard is located behind the thermostat cover. Three frequently used keys, increase or decrease , 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.
  • Page 8 WAKE LEAVE DIGITAL TIME / TIME INCREASE 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...
  • Page 9 SHOWS WHEN SHOWS SHOWS SHOWS THERMOSTAT IS SHOWS TEMPERATURE TEMPERATURE THERMOSTAT THERMOSTAT PROCESSING INFORMATION DISPLAYED IS THE CURRENT IS IN THE SETTING CHANGED IS IN THE AND WAITING TO CALL FOR SET TEMPERATURE FOR THIS PROGRAMMING SET CURRENT HEAT OR COOL PROGRAM MODE DAY/TIME MODE...

  • Page 10: Adaptive Intelligent Recovery

    Recovery control gradually changes the tempera- ADAPTIVE INTELLIGENT ture from the energy savings setting to the comfort RECOVERY CONTROL setting (for example, from a heating temperature of 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.

  • Page 11: Optimum Comfort And Energy Savings

    After installation or new schedule programming, your Optimum Comfort and Energy Savings thermostat learns from experience. Each day it 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°...
  • Page 12 At 7:00 AM System Operating in Comfort Mode System Heat At 6:00 AM Room Recovery Wake Auto Continues System Heat Recovery At 5:00 AM Room Sleep Auto Recovery Continues System Heat Recovery Room At 4:00 AM Sleep Auto Recovery Begins System Heat Recovery...

  • Page 13: Operating Your Thermostat

    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.

  • Page 14: Setting The System Key

    Setting the System Key Setting the Fan Key Press the System key until the desired Press Fan key until the desired mode System system (Heat, Off, Cool, or Auto) displays. (On or Auto) displays: Heat: The thermostat controls the heating. On: Fan operates continuously.

  • Page 15: Setting Temporary Temperatures

    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...
  • Page 16 Press the Run Program key to cancel the temporary System Temporary temperature setting before the designated time. Heat Program Heat Auto M14564 After selecting a temporary setting, the display reads “Temporary” until canceled. Example display shows temporary heat setting of 70° at 6:00 AM. appears under the temperature display, it means that both the heating and cooling setpoints are being adjusted.

  • Page 17: Changing And Holding Temperature Setting Indefinitely

    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. Heat Auto NOTE: The display changes from the setpoint to the room temperature after approximately three M14565 seconds.

  • Page 18: Changing Temperature Setting Until A Designated Day And Period (Vacation Hold)

    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. Hold for ZONING Days 1. Press Hold Temp key twice. Hold Temp Heat Wake...
  • Page 19 Press Wake, Leave, Return or Sleep key to select the period the Hold ends. System Setting Heat Wake Leave Return Sleep Hold for Days Heat Return Auto M14571 In this example, the Hold ends after the 18 day at the beginning of the Return period. 4.
  • Page 20 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.

  • Page 21: Replacing The Batteries

    Replacing the Batteries This thermostat uses three AA alkaline batteries. Batteries must be installed for programming and operation of the thermostat and heating (cooling system). The batteries are located in the wallplate. See illustration. WALLPLATE IMPORTANT Although the thermostat has a low battery indicator, replace the batteries once a year to prevent leakage and to prevent the thermostat and heating/cooling system from shutting down...
  • Page 22 Always use fresh alkaline batteries. Nonalkaline batteries do not last as long; they also can leak, causing damage to the thermostat and the wall surface. Honeywell recommends Energizer® batteries. M16424 69-1536–3...

  • Page 23: Using The (Information) Key

    Using the (Information) Key (information) key provides information at your System fingertips. The sequence of key presses is: Heat • Current setpoint of mode in use (Heat or Cool). • Setpoint of mode not currently in use. Room Wake Auto Displaying Current Settings INFORMATION KEY M20150...

  • Page 24: Display Or Reset Filter Timer Settings

    Filter Days key several times. If you want to use this feature and it is not currently M20243 activated, check the Installation Instructions at www.honeywell.com/yourhome or call 1-800-468- 2. Press the Timer key to reset the timer. 1502. Filter Days M20244 69-1536–3...

  • Page 25: Setting The Clock

    SETTING THE CLOCK Set Day/Time Setting Current Day and Time On initial power up or after an extended power loss, “1:00 PM” flashes on the display until a key is pressed. Set Current 1. Press Set Current Day/Time key. M14580 Day/Time Press Set Current Day/Time key to show information displayed.
  • Page 26 2. Press Day key until the current day displays. Set Day/Time Mon = Monday, Tue = Tuesday, Wed = Wednesday, Thu = Thursday, Fri = Friday, Sat = Saturday, Sun = Sunday. M14581 Press Day key to set the current day. Example display shows Tuesday.

  • Page 27: Daylight Saving Time

    Daylight Saving Time Set Day/Time NOTE: If the current time is Daylight Saving Time, press Daylight Time key to display “DST.” Daylight Time M14583 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).

  • Page 28: Programming Your Thermostat

    PROGRAMMING YOUR THERMOSTAT 7-Day Program and Operation Your thermostat is 7-day programmable. 7-day programming means you can set your thermostat for four periods (Wake, Leave, Return and Sleep) and up to eight temperatures (four Heat and four Cool) for each day of the week.

  • Page 29: 7-Day Preprogrammed Schedule

    7-Day Preprogrammed Schedule Your thermostat is preprogrammed with the schedule shown in Table 1 (same schedule for all days of the week). You may keep this schedule or develop your own. Before starting the programming procedure, use Table 2 to plan your schedule.

  • Page 30: Customizing Your Own 7-Day Schedule

    Customizing Your Own 7-Day Schedule Table 2. Your 7-Day Schedule. WAKE LEAVE RETURN SLEEP SUNDAY TIME TIME TIME TIME AUTO AUTO AUTO AUTO MONDAY TIME TIME TIME TIME AUTO AUTO AUTO AUTO TUESDAY TIME TIME TIME TIME AUTO AUTO AUTO AUTO WEDNESDAY TIME...

  • Page 31: Programming The First Day

    About Power Outages… Don’t worry! Your 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”...
  • Page 32 1. Press the Wake key. Wake System Set Program Setting Heat Heat Wake Auto M14586 Press the Wake key to enter the program mode. Example display shows 6:00 AM on Tuesday with Heat set to 70°F. 2. Press Day key until the desired day displays. System Set Program Setting...
  • Page 33 3. Press Time or Time key until the desired Wake System Set Program Setting Heat time displays. TIME The program times are in fifteen-minute intervals; Heat Wake Auto for example, 8:00, 8:15, 8:30. M14589 Press the Time or Time key to select the time the Wake period will begin.
  • Page 34 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/Cool Settings Heat or Cool).
  • Page 35 7. Press increase or decrease key until the desired System Set Program Setting temperature setpoint displays. Heat Cool Wake Auto M14592 Press increase or decrease to select the cooling Wake temperature. Example display shows the cooling Wake period set for 76°. 8.

  • Page 36: Copying A Day

    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 Wake, Leave, Return or Sleep key to enter program mode. Wake Leave Return...
  • Page 37 3. Press Copy key. Copy M14594 Press Copy key to copy a day schedule into memory. Example display shows Monday schedule was copied into memory. 4. Press Day key until the day to be copied to is displayed. M14595 Press Day key again to select the day to copy to. Example display shows Monday and Wednesday.
  • Page 38 5. Press Copy key. Copy NOTE: “donE” displays for two seconds before the normal display returns. M14596 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).

  • Page 39: Clearing A Program Period

    Clearing a Program Period The thermostat must be in the program mode System Set Program Setting to use the clear feature. Go to step 2 if the thermo- Heat stat is already in the program mode (Set Program displays in upper left corner). Heat Leave 1.
  • Page 40 3. Press and hold Leave, Return or Sleep key until the start Setting Set Program time and temperature setting are cleared (approximately three seconds). Leave Return Sleep NOTE: Wake cannot be cleared. Heat Leave M14599 Press and hold Leave, Return or Sleep key to clear the period for that day.

  • Page 41: Troubleshooting

    TROUBLESHOOTING Symptom Possible Cause Action Display does not Thermostat is not being • Check if the batteries are correctly installed. come on. powered. • Check if the thermostat is mounted and latched on the wallplate—mount and latch the thermostat on the wallplate.
  • Page 42 Troubleshooting (Cont) Symptom Possible Cause Action Cooling does not System selection is not set to Check that setpoint is below room temperature. come on. Cool. Cooling setpoint is Check if the circuit breaker is tripped—reset the circuit above room temperature. breaker.

  • Page 43: Warranty

    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.
  • Page 44 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 or call 1-800-468-1502, Monday-Friday, 7:00 a.m.

  • Page 45: Customer Assistance

    CUSTOMER ASSISTANCE After reading this guide, if you have any questions about the operation of your thermostat, please contact the Honeywell Customer Relations at www.honeywell.com/yourhome or 1-800-468-1502. For service, contact your local heating and cooling contractor. 69-1536–3...
  • Page 46 FCCID: CFS8DL5800STAT CANADA: 1748A 12111 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. FEDERAL COMMUNICATIONS COMMISSION (FCC) STATEMENT This equipment has been tested to FCC requirements and has been found acceptable for use.
  • Page 48 Automation and Control Solutions Honeywell Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 Printed in U.S.A. on recycled paper containing at least 10% www.honeywell.com/yourhome 69-1536–3 G.H. Rev. 11-02 post-consumer paper fibers.

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T8665a chronotherm iv

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