T8665A Chronotherm® IV Wireless Thermostat USER’S GUIDE 1 69-1536-3 69-1536–3
69-1536–3
CONTENTS USING THIS GUIDE .......................................................................................................................................... 5 FEATURES ........................................................................................................................................................ 6 KEYBOARD AND DISPLAY DESCRIPTION .................................................................................................... Keyboard ..................................
Contents (Cont) Using the (Information) Key ......................................................................................................................... Display Current Setting ................................................................................................................................. Display or Reset Filter Timer Settings .......................................................................................................... SETTING THE CLOCK ............................
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 ZoneTM Panel. ZONING 60 90 90 60 70 80 70 80 – Tip symbol. Look for helpful tips throughout the guide when you see this symbol.
FEATURES • Information at the press of a button—use the (information) key to see the current setpoints. • Daylight Time key for quick time changes between Daylight and Standard time. • Backlit display for improved readability – backlighting on demand (press any key to activate). • Programmable Fan – your thermostat can activate the fan in any programming period for improved air circulation and air cleaning when a Honeywell wholehouse air cleaner is installed.
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.
TIME / TIME SETS TIME FORWARD OR BACK WAKE SET WAKE TIMES AND TEMPERATURES LEAVE SET LEAVE TIMES AND TEMPERATURES DIGITAL DISPLAY DECREASE LOWERS TEMPERATURE SETTING SET CURRENT DAY/TIME SETS CURRENT DAY AND TIME INFORMATION DISPLAYS CURRENT HEAT/COOL TEMPERATURE SETTING 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 INCREASE RAISES TEMPERATURE SETTING Set Program Time Run Program Hold
SHOWS THERMOSTAT IS PROCESSING INFORMATION AND WAITING TO CALL FOR HEAT OR COOL SHOWS ADAPTIVE INTELLIGENT RECOVERYTM IS CHANGING THE TEMPERATURE TO MEET THE CURRENT PROGRAM SHOWS VACATION HOLD DURATION SHOWS FILTER TIMER STATUS 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 Wait Set Program Se
ADAPTIVE INTELLIGENT RECOVERYTM CONTROL 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). 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.
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.
At 7:00 AM System Operating in Comfort Mode System Heat AM TEMPERATURE At 6:00 AM Recovery Continues Fan Mon Wake Room Auto System Heat Recovery Room Mon Sleep System Heat Recovery AM Fan At 5:00 AM Recovery Continues AM Auto 1 Fan Room Mon At 4:00 AM Recovery Begins Sleep Auto System Heat Recovery AM Fan Room Mon Sleep Auto ENERGY SAVINGS PERIOD RECOVERY FROM ENERGY SAVINGS TIME COMFORT PERIOD THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPER
OPERATING YOUR THERMOSTAT Your 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. 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.
Setting the System Key Press the System key until the desired system (Heat, Off, Cool, or Auto) displays. Setting the Fan Key Press Fan key until the desired mode (On or Auto) displays: System Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between heating and cooling operation, depending on the indoor temperature. Fan On: Fan operates continuously.
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 setpoint displays.
Press the Run Program key to cancel the temporary temperature setting before the designated time. Run Temporary AM Program Mon System Heat Fan 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. 60 90 90 60 70 80 70 80 If ▲ or ▼ appears under the temperature display, it means that both the heating and cooling setpoints are being adjusted.
Changing and Holding Temperature Setting Indefinitely 1. Press Hold Temp key once. Hold Temp Setting 2. Press increase ▲ or decrease ▼ to change the temperature 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. System Heat Fan Heat Auto M14565 Press Hold Temp key once to display the thermostat in Hold mode. Example display shows temporary heat setting of 60°.
Changing Temperature Setting Until a Designated Day and Period (Vacation Hold) When setting Vacation Hold in a zone system, set all thermostats independently to Vacation Hold. Setting Hold for ZONING Days 1. Press Hold Temp key twice. System Heat Hold Temp Fan Heat Wake Auto M14833 Press Hold Temp key twice to display the thermostat in Vacation mode. Example display shows temporary heat setting of 60°. IMPORTANT To cancel the Vacation Hold before the designated time, press Run Program key.
Press Wake, Leave, Return or Sleep key to select the period the Hold ends. Wake Leave Return Setting System Heat Sleep Hold for Days Fan Heat Return Auto M14571 In this example, the Hold ends after the 18th day at the beginning of the Return period. 4. Press increase ▲ or decrease ▼ to adjust the temperature setting, if desired. NOTE: Only the heating temperature is used when the System is set to Heat. Similarly, only the cooling temperature is used when the System is set to Cool.
5. Press Heat/Cool Settings key to change between heat and cool settings. Heat/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). 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 You can always press Program to return display to normal.
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 due to lack of battery power in the thermostat. 1.
2. Remove the thermostat by placing your thumb between the thermostat and wallplate and pulling the thermostat up and away as shown. If you insert new batteries within 20 to 30 seconds of removing the old batteries, the system retains the current time and day. If the display is blank, the batteries are dead or installed incorrectly. You must reset the time and day. Refer to Setting the Clock section for instructions.
Using the (Information) Key The (information) key provides information at your fingertips. The sequence of key presses is: • Current setpoint of mode in use (Heat or Cool). • Setpoint of mode not currently in use. System Heat AM Tue Wake Room Fan DST Auto INFORMATION KEY Displaying Current Settings Press key once to check the current temperature setpoint. Press setpoint of the mode not currently in use.
Display or Reset Filter Timer Settings When the thermostat activates a timer, the thermostat flashes Filter until the timer resets. 1. Reset the timer by pressing the i key until the expired timer is displayed. Filter 3. Press the Run Program key. Note: You can view the number of days remaining at any time by pressing the i key three or four times. If more than one timer is active, all active timers show sequentially when pressing the i key several times.
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. 1. Press Set Current Day/Time key. PM Mon Set Current Day/Time M14580 Press Set Current Day/Time key to show information displayed. IMPORTANT Always press the keys with your fingertip or similar blunt tool. Sharp instruments like pens and pencil points can damage the keyboard.
2. Press Day key until the current day displays. 60 90 90 60 70 80 70 80 Day Set Day/Time Mon = Monday, Tue = Tuesday, Wed = Wednesday, Thu = Thursday, Fri = Friday, Sat = Saturday, Sun = Sunday. PM Tue M14581 Press Day key to set the current day. Example display shows Tuesday. 3. Press Time or Time key until the current time displays. TIME 60 90 90 60 70 80 70 80 Tap the Set Current Day/Time key to advance the time in one-hour increments. Set Current Set Day/Time AM Day/Time 4.
Daylight Saving Time Set Day/Time AM NOTE: If the current time is Daylight Saving Time, press Daylight Time key to display “DST.” Daylight Time Tue DST M14583 Press Daylight Time key to set Daylight Saving Time. 60 90 90 60 70 80 70 80 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).
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. Each day can be the same or different. Program Periods: WAKE The program period when you want the house at a comfortable temperature when you get up and while you get ready for work or school.
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. 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.
Customizing Your Own 7-Day Schedule Table 2. Your 7-Day Schedule.
60 90 90 60 70 80 70 80 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” flashes on the display), but the schedule is retained.
1. Press the Wake key. Wake Setting Set Program AM System Heat Fan Tue Wake Heat 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. Day Setting Set Program AM Mon Wake System Heat Fan Heat Auto M14588 Press Day key to select the day to program. Example display shows Monday is selected and ready to program.
3. Press Time or Time time displays. key until the desired Wake Setting Set Program System Heat AM TIME 60 90 90 60 70 80 70 80 The program times are in fifteen-minute intervals; for example, 8:00, 8:15, 8:30. Fan Mon Wake Heat Auto M14589 Press the Time or Time key to select the time the Wake period will begin. Example display shows the Wake period will begin at 6:30 AM. 4. Press increase ▲ or decrease ▼ key until the desired Wake temperature displays.
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).
7. Press increase ▲ or decrease ▼ key until the desired temperature setpoint displays. Setting Set Program System Heat AM Mon Wake Fan Cool Auto M14592 Press increase ▲ or decrease ▼ to select the cooling Wake temperature. Example display shows 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.
Copying a Day 60 90 90 60 70 80 70 80 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. 2. Press Day key to select the day to copy from. Wake Leave Return Setting Set Program Day Sleep AM Mon Wake System Heat Fan Heat Auto M14590 Press Day key to select the day schedule to copy.
3. Press Copy key. Copy Mon 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. Day Mon Wed M14595 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.
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). 6. Repeat steps, as necessary, for all the periods and days desired. 7. Press Run Program key to return to normal operation.
Clearing a Program Period 60 90 90 60 70 80 70 80 The thermostat must be in the program mode to use the clear feature. Go to step 2 if the thermostat is already in the program mode (Set Program displays in upper left corner). AM Mon 1. Press Leave, Return or Sleep key to enter program mode. Leave Return Sleep Setting Set Program System Heat Fan On Heat Leave M14597 Press Leave, Return, or Sleep to enter the program mode.
3. Press and hold Leave, Return or Sleep key until the start time and temperature setting are cleared (approximately three seconds). Leave Return Sleep Setting Set Program NOTE: Wake cannot be cleared. Leave Sat Heat M14599 Press and hold Leave, Return or Sleep key to clear the period for that day. Example display shows Saturday Leave period cleared. 60 90 90 60 70 80 70 80 You do not have to program a replacement time for the remaining periods; for example, Wake and Sleep.
TROUBLESHOOTING Symptom Display does not come on. Possible Cause Thermostat is not being powered. Action • Check if the batteries are correctly installed. • Check if the thermostat is mounted and latched on the wallplate—mount and latch the thermostat on the wallplate. Temperature setting does not change (Example: cannot set the heating higher or the cooling lower). Heating does not come on. The upper or lower temperature limits were reached.
Troubleshooting (Cont) Symptom Cooling does not come on. Possible Cause System selection is not set to Cool. Cooling setpoint is above room temperature. Action Check that setpoint is below room temperature. Check if the circuit breaker is tripped—reset the circuit breaker. Check if the fuse at the fuse box is blown—replace the fuse. Check if the System switch at the equipment is in the Off position—set to the On position. Wait five minutes for the system to respond (thermostat displays “ Wait”).
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 replace it (at Honeywell’s option) within a reasonable period of time.
Warranty (Cont) THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONE YEAR DURATION OF THIS WARRANTY. Some 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.
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.
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.
Automation and Control Solutions Honeywell Limited-Honeywell Limitée Honeywell 35 Dynamic Drive 1985 Douglas Drive North Scarborough, Ontario Golden Valley, MN 55422 M1V 4Z9 69-1536–3 G.H. Rev. 11-02 Printed in U.S.A. www.honeywell.
