User manual HONEYWELL T8631A

Chronotherm III for Comfort and Convenience OWNER'S GUIDE Congratulations! You made a smart choice when you purchased your new Honeywell Communicating Chronotherm III Thermostat. It's the smart thermostat that: s Keeps you comfortable by automatically calculating exactly when the furnace or air conditioning should go on to have the house at the desired comfort temperature by the time you wake up. s Saves the maximum amount of energy and money by remembering to automatically set back the heat or air conditioning when you leave home. s Provides the ultimate in comfort and convenience by coming to you already programmed. But it's your choice--use the preprogrammed schedule or set your own. s Can be connected to a Honeywell's TotalHome system for external access and control. TotalHome system devices communicate using HBus, a Honeywell communications protocol. Features Monitor thermostat operation; read current time and room temperature at a glance. Set different schedules for weekdays, Saturday, and Sunday. Check status light to see if the thermostat is on, even in the dark. Set the temperature warmer or cooler with the touch of a key. Choose manual or programmed thermostat operation. Bypass the stored program for a single period. Choose system and fan operation with the thermostat switches (on subbase). Program up to four different time periods in each schedule. AUX. HT. and EM. HT. on T8631R. See Glossary, page 40. Simple Four-Step Programming Of course, you can use the schedule preprogrammed into your new thermostat. See Glossary, page 40-42). But it's an easy matter to program the thermostat to fit your lifestyle. 1 Set the current time and day. See page 1. 2 Set the program schedule and heating temperatures. See page 2. 3 Set the cooling temperatures. See page 7. 4 Set the system and fan switches. See page 12. TABLE OF CONTENTS Programming Your Thermostat ........................... 1-13 Setting the current day and time ............................. 1 Setting the program schedule and heating temperatures .................................................................... 2 Setting the cooling temperatures ............................ 7 Setting the system and fan switches on the subbase ............................................................ 12 Operating Your Thermostat ............................... 14-20 Temporarily changing the program ....................... 14 Permanently changing the program ...................... 15 Operating the thermostat manually ....................... 16 Canceling program settings ................................... 17 Checking the program times and temperatures .... 18 Checking the current temperature setting ............. 19 External access and control of thermostat ............ 20 Maintaining Your Thermostat ............................ 21-24 Removing the thermostat ...................................... 21 Replacing the thermostat ...................................... 22 Replacing the batteries .......................................... 23 Power outages ...................................................... 24 Adaptive Intelligent RecoveryTM ........................ 25-28 Selecting Recovery Setting ................................ 29-30 Heat Pumps with Supplemental Heat ................ 31-32 Answering Common Questions About the Chronotherm III Thermostat ............................................ 33-36 Saving Energy Across the U.S. .......................... 37-39 Glossary ............................................................... 40-42 Your Personal Program ...................................... 43-44 Troubleshooting Guide ....................................... 45-46 Quick Reference to the Keys ............................. 47-48 Index ..................................................................... 49-50 Warranty .................................................................... 51 i PROGRAMMING YOUR THERMOSTAT STEP 1 SETTING THE CURRENT DAY AND TIME You can program this thermostat only on the wall with 24 Vac applied to R and C terminals. Always press the keys with your fingertip or similar blunt tool. Sharp instruments like a pen or pencil point can damage the keyboard. NOTE: Check the glossary, page 40, for definitions of unfamiliar words. SET PRESENT DAY/TIME Press and release. The display shows 1:00 PM Mon. Press and hold until the current day appears in the display. Press and hold until the current time appears in the display. Be sure AM or PM appears as desired. You have programmed the current day and time. Go on to Step 2. PM MON PM TUE DAY PM TUE AHEAD BACK 1 STEP 2 SETTING THE PROGRAM SCHEDULE AND HEATING TEMPERATURES Before You Begin... The schedule form on page 43 provides an opportunity to plan your schedule. Now... Start by programming the WAKE time and temperature for weekdays. WAKE Press and release. Note that the display shows WAKE, the preprogrammed time and temperature. If the display reads COOL, press and release to switch to HEAT. If display reads SAT or SUN, press and hold until MON TUE WED THU FRI appears. Press and hold until the display shows the desired starting time. If using T8631A in Conventional Recovery ( s visible in display). See Glossary section. With Convential Recovery the time should be set 30 or more minutes ahead of desired comfort time to get the house comfortable. AM MON TUE WED THU FRI WAKE ON HEAT SET PT SET HEAT/COOL AM MON TUE WED THU FRI WAKE ON HEAT SET PT DAY AM MON TUE WED THU FRI WAKE ON HEAT SET PT AHEAD AM MON TUE WED THU FRI WAKE ON HEAT The thermostat requires a program for WAKE. You can program LEAVE, RETURN and SLEEP or not, as you please. SET PT BACK 2 PROGRAMMING YOUR THERMOSTAT WARMER COOLER Press and hold until the display shows the desired temperature. If the display starts to blink while you are holding down TEMPERATURE WARMER or COOLER, you have reached the setting limit. Press and release. The display shows LEAVE, but no time or temperature. Press and hold until the display shows the desired starting time. AM MON TUE WED THU FRI WAKE ON HEAT SET PT Program the LEAVE time and temperature, if desired. NOTE: You can cancel the LEAVE, RETURN or SLEEP program by holding down the key until the time and temperature disappear from the display. LEAVE SET PT MON TUE WED THU FRI LEAVE ON HEAT AM MON TUE WED THU FRI LEAVE ON HEAT AHEAD BACK SET PT WARMER COOLER Press and hold until the display shows the desired temperature. AM MON TUE WED THU FRI LEAVE ON HEAT SET PT 3 Program the RETURN time and temperature, if desired. RETURN Press and release. The display shows RETURN, but no time or temperature. Press and hold until the display shows the desired starting time. T8631A using Conventional Recovery ( s visible in display) should be set 30 or more minutes ahead of desired comfort time. Press and hold until the display shows the desired temperature. SET PT MON TUE WED THU FRI RETURN ON HEAT AHEAD BACK PM MON TUE WED THU FRI RETURN ON HEAT SET PT WARMER COOLER PM MON TUE WED THU FRI RETURN ON HEAT SET PT Program the SLEEP time and temperature, if desired. SLEEP Press and release. The display shows SLEEP, the preprogrammed time and temperature. Press and hold until the display shows the desired starting time. PM MON TUE WED THU FRI SLEEP ON HEAT SET PT AHEAD BACK PM MON TUE WED THU FRI SLEEP ON HEAT SET PT 4 PROGRAMMING YOUR THERMOSTAT WARMER COOLER Press and hold until the display shows the desired temperature. PM MON TUE WED THU FRI SLEEP ON HEAT SET PT Set the SATURDAY schedule. Use the same procedure as for weekdays. DAY Press and release until SAT appears on the display. Press WAKE, LEAVE, RETURN or SLEEP to select the time period. PM SAT SLEEP ON HEAT SET PT WAKE LEAVE SLEEP RETURN AHEAD BACK Press the AHEAD/BACK keys to set the time and the WARMER/COOLER keys to set the temperature. WARMER COOLER 5 Set the SUNDAY schedule. Use the same procedure as for weekdays. DAY Press and hold until SUN appears on the display. Press WAKE, LEAVE, RETURN or SLEEP to select the time period. PM SUN SLEEP ON HEAT SET PT WAKE LEAVE SLEEP RETURN AHEAD BACK Press the AHEAD/BACK keys to set the time and the WARMER/COOLER keys to set the temperature. You have completed setting the program schedule and heating temperatures. To set air conditioning, go to Step 3, WARMER COOLER RUN PROGRAM If you do not want to program cool temperature, skip Step 3 and press RUN PROGRAM key. 6 PROGRAMMING YOUR THERMOSTAT STEP 3 SETTING THE COOLING TEMPERATURES The program times are the same for both heating and cooling. Only the cooling temperatures need to be programmed if you have already programmed for heating. If you change program times for cooling, you are also changing them for heating! To set times as you program the cooling temperatures, use the TIME AHEAD and BACK keys as described in Step 2. First program the WAKE temperature for weekdays. WAKE Press and release. The display shows WAKE, the time and temperature you programmed for heating. Press and release so COOL shows on the display, along with the programmed cooling temperature. If display reads SAT or SUN, press and hold until MON TUE WED THU FRI appears. AM SUN WAKE ON HEAT SET PT SET HEAT/COOL AM SUN WAKE COOL SET PT DAY AM MON TUE WED THU FRI WAKE COOL SET PT 7 WARMER COOLER Press and hold until the display shows the desired temperature. If the display blinks while you hold down TEMPERATURE WARMER or COOLER, you have reached the setting limit. Press and release. The display shows LEAVE, the time programmed for heating and 78° F. Press and hold until the display shows the desired temperature. AM MON TUE WED THU FRI WAKE COOL SET PT Program the LEAVE temperature, if desired. LEAVE AM MON TUE WED THU FRI LEAVE COOL SET PT AM MON TUE WED THU FRI LEAVE COOL WARMER COOLER SET PT Program the RETURN temperature, if desired. RETURN Press and release. The display shows RETURN, the time programmed for heating and 78° F. PM MON TUE WED THU FRI RETURN COOL SET PT 8 PROGRAMMING YOUR THERMOSTAT WARMER COOLER Press and hold until the display shows the desired temperature. PM MON TUE WED THU FRI RETURN COOL SET PT Program the SLEEP temperature if desired. SLEEP Press and release. The display shows SLEEP, the time programmed for heating and 78° F. Press and hold until the display shows the desired temperature. PM MON TUE WED THU FRI SLEEP COOL SET PT WARMER COOLER PM MON TUE WED THU FRI SLEEP COOL SET PT Set the cooling temperatures for the SATURDAY schedule. Use the same procedure as for weekdays. DAY Press and hold until SAT appears on the display. PM SAT COOL SLEEP SET PT 9 WAKE Press WAKE, LEAVE, RETURN or SLEEP to select the time period. LEAVE SLEEP RETURN WARMER COOLER Press the WARMER/COOLER keys to set the temperature. Set the cooling temperatures for the SUNDAY schedule. Use the same procedure as for weekdays. DAY Press and hold until SUN appears on the display. Press WAKE, LEAVE, RETURN or SLEEP to select the time period. PM SUN SLEEP COOL SET PT WAKE LEAVE SLEEP RETURN 10 PROGRAMMING YOUR THERMOSTAT WARMER COOLER Press the WARMER/COOLER keys to set the temperature. You have completed programming the cooling temperatures. Press and release to start the program. TUE LEAVE RUN PROGRAM PM SET PT Go to Step 4. 11 STEP 4 SETTING THE SYSTEM AND FAN SWITCHES ON THE SUBBASE The T8631A does not have the EM. HT. switch position. Note the positions provided on your subbase, then set the switch(s) as desired. First set the fan switch. FAN ON: Use for improved air circulation during special occasions or for more efficient electronic air cleaning. The fan runs continuously. FAN AUTO: Normal setting for most homes and businesses. T8631A: the fan starts and stops with the air conditioner and with the heating equipment when the fan switch (4A) is set for electric heat. When 4A is set for conventional heat, the fan is controlled by the heating equipment. T8631R: the fan starts and stops with the compressor in heat pump systems when the system switch is set to HEAT or COOL. When system switch is set to EM. HT., the fan operates with the auxiliary heat (on some models). EM. HT. (T8631R only): The thermostat controls only the backup heat. The heat pump is off. FAN ON AUTO FAN ON AUTO Then set the system switch. EM. HT. HEAT OFF COOL 12 PROGRAMMING YOUR THERMOSTAT HEAT: The thermostat controls your heating system. EM. HT. HEAT OFF COOL OFF: Both your heating and cooling systems are off. EM. HT. HEAT OFF COOL COOL: The thermostat controls your cooling system. You have finished programming your thermostat. Now, while you enjoy precision temperature control, read on to learn about the operating flexibility that makes this thermostat THE SMART CHOICE. 13 EM. HT. HEAT OFF COOL OPERATING YOUR THERMOSTAT TEMPORARILY CHANGING THE PROGRAM These features let you tailor the program for those times when someone comes home early, or you're staying up late, or you plan to be out for the evening. SKIP NEXT PERIOD Press and release. The name of the period to be skipped will flash in the display until the next regularly scheduled period starts. Press and release. The display will show the name of the previous period and flash TEMPORARY until the next regularly scheduled periods starts. PM TUE LEAVE RETURN CHANGE TO LAST PERIOD PM TUE WAKE TEMPORARY 14 OPERATING YOUR THERMOSTAT To temporarily raise or lower the temperature for the current period only. WARMER COOLER Press and hold until the desired temperature is reached. The display will flash TEMPORARY until the next programmed time period starts. Press and release to cancel any of the temporary settings. If you change your mind. RUN PROGRAM PM TUE LEAVE SET PT PERMANENTLY CHANGING THE PROGRAM If your schedule changes or you want a different temperature, you can update any setting without affecting the rest of the program. WAKE Press and release the desired period key. LEAVE SLEEP RETURN DAY Press and hold until the desired day schedule shows on the display. 15 AHEAD BACK Press and hold the Time or Temperature keys until the display shows the desired new program. WARMER COOLER RUN PROGRAM Press and release to return to normal operation. Press and release. ON HEAT OPERATING THE THERMOSTAT MANUALLY This feature lets you set one temperature that the thermostat will hold continuously. Your preset schedule will resume when you push the RUN PROGRAM key. HOLD TEMP SET PT WARMER COOLER Press and hold to change the temperature setting. After a few seconds, the display will show the current temperature. Press and release to check the temperature setting. Press and release to cancel hold. TUE LEAVE SET PT ON HEAT PRESENT SETTING SET PT ON HEAT RUN PROGRAM PM 16 OPERATING YOUR THERMOSTAT CANCELING PROGRAM SETTINGS The thermostat requires time and temperature settings in the WAKE period, but any of the other periods can be canceled. Weekday, Saturday and Sunday settings are canceled separately. SLEEP LEAVE Press and hold the desired period key until the time and temperature clear from the display (about 3 seconds). MON TUE WED THU FRI LEAVE ON HEAT RETURN RUN PROGRAM Press and release to return to normal operation. PM MON RETURN 17 CHECKING THE PROGRAM TIMES AND TEMPERATURES You can check all the stored settings without affecting the permanent program. WAKE SLEEP Press and release the desired period key. The start time and temperature setting will appear on the display. PM MON TUE WED THU FRI SLEEP ON HEAT SET PT LEAVE RETURN DAY Press and release to display the next daily time and temperature for that period. Press and release to return to normal operation. PM SAT SLEEP ON HEAT SET PT RUN PROGRAM PM MON RETURN 18 OPERATING YOUR THERMOSTAT CHECKING THE CURRENT TEMPERATURE SETTING Press a single key to compare current room temperature to the setting at any time. PRESENT SETTING Press and release. The display will show the current temperature setting for several seconds, then revert to the room temperature. SET PT ON HEAT ACCSING EXTERNAL SYSTE 19 EXTERNAL ACCESS AND CONTROL OF THERMOSTAT The T8631 Communicating Chronotherm III Thermostat can be connected to a Honeywell TotalHome system for external access and control. A TotalHome system allows you to change thermostat settings from the system's user interface panels. depending on the system chosen, you can also use a touchtone phone to adjust your setting. Whenever the thermostat is controlling to TotalHOme system setting, a v appears under the room temperature display. You can easily make temporary temperature setting changes by pushing the WARMER or COOLER key on the T8631. The temporary override setting lasts until the next period starts. To permanently change the temperature set point, push the desired period key, then the WARMER or COOLER key. Use the RUN PROGRAM key to change from external system control to thermostat control of program times and temperatures until a new command is received from the TotalHome system. The T8631 Thermostat can communicate on an HBus network over four-wire conductor cables. This cable connects to the H1, H2, H3 and H4 terminals on the thermostat. HBus is a Honeywell proprietary communications protocol. For assistance, call Consumer Services, 1-800-468-1502, MondayFriday, 7:30 a.m. to 5:00 p.m., Central time. AM MON WAKE SET PT 20 MAINTAINING YOUR THERMOSTAT REMOVING THE THERMOSTAT 1 Loosen the two captive screws at the bottom corners of the case. 2 Pull out the thermostat from the bottom. 3 Lift the thermostat up and off the base. SYSTEM SYSTEM PM MON RETURN HEAT ON SYST EM TEMPERATURE RUN PROGRAM PERIOD SET PRESENT DAY/TIME DAY WAKE LEAVE TIME SKIP NEXT PERIOD CHANGE TO LAST PERIOD PRESENT SETTING AHEAD WARMER HOLD TEMP SET HEAT/COOL SLEEP RETURN BACK COOLER HEAT AUTO COOL OFF ON AUTO FAN FAN ON AUTO AUX. HEAT EM. HT. HEAT OFF COOL EM. HT. AUX. HEAT M5062 M5013 M5066 21 REPLACING THE THERMOSTAT 1 Hang the thermostat on the tabs at the top of the subbase. 2 Swing down and press bottom edge until thermostat snaps in place. 3 Tighten the captive screws. SYSTEM PM MON RETURN HEAT ON SYSTEM PM MON RETURN HEAT ON TEMPERATURE RUN PROGRAM PERIOD SET PRESENT DAY/TIME DAY WAKE LEAVE TIME SKIP NEXT PERIOD CHANGE TO LAST PERIOD PRESENT SETTING AHEAD WARMER HOLD TEMP SET HEAT/COOL SLEEP RETURN BACK COOLER FAN AUTO ON AUTO HEAT AUTO COOL OFF AUX. HEAT EM. HT. M5014 M5075 M5063 22 MAINTAINING YOUR THERMOSTAT REPLACING THE BATTERIES Your thermostat uses three AAA alkaline batteries. The display will flash REPL BAT when the batteries get low. You won't have to reprogram the thermostat if you insert the new batteries within 20-30 seconds of taking out the old ones. To replace: s Set the system switch to OFF. s Remove the thermostat from the wall. See page 21. s Lift the batteries out of the holder. s Insert the new batteries, making sure the positive (+) terminals all face toward the right. s Replace the thermostat on the wall. See page 22. s Reprogram, if necessary. M5065 23 POWER OUTAGES Backup batteries will hold the programming and keep on the display during most power outages. Once the power is restored, the system will resume normal operation. If the display goes off when power is lost, either the backup batteries need to be replaced or were not installed. When power is restored, the display will flash 1:00 PM to remind you to reprogram. If the colon is not flashing, there is no AC power or the thermostat is not properly connected to the subbase. 24 ADAPTIVE INTELLIGENT RECOVERYTM ADAPTIVE INTELLIGENT RECOVERYTM--BREAKTHROUGH TECHNOLOGY SENSES TEMPERATURE MORE LIKE YOU DO M 168 25 Your new thermostat is so smart, it's almost human. s Your body perceives temperature from a variety of sources, not only from the air in the room, but also from your surroundings--walls, windows and furnishings. s Human beings feel differences in temperature as slight as two degrees Fahrenheit. s Common household thermometers and standard thermostats sense only air temperature, which may or may not reflect how hot or cold the room actually feels to a human being. s Your new thermostat reads both the temperature of the wall and the air-- and responds to temperature changes as little as one degree Fahrenheit--so room temperature is more likely to feel right to you and your family. 26 ADAPTIVE INTELLIGENT RECOVERYTM THE OPTIMUM COMFORT AND ENERGY SAVINGS SOLUTION System Operating in Comfort Mode PT PM BAT SUN MON TUE WED THU FRI SAT COOL ON HEAT ON WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED AM REPL SET TEMPERATURE PT PM BAT SUN MON TUE WED THU FRI SAT COOL ON HEAT ON WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED AM REPL SET Recovery Begins AM REPL PM BAT SET PT Recovery Continues SUN MON TUE WED THU FRI SAT COOL ON HEAT ON WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED System Operating in Energy Savings Mode PT PM BAT SUN MON TUE WED THU FRI SAT COOL ON HEAT ON WAKE LEAVE RETURN SLEEP TEMPORARY UNOCCUIPIED AM REPL SET ENERGY SAVINGS PERIOD RECOVERY FROM ENERGY SAVINGS COMFORT PERIOD TIME THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON. M 171 27 s This thermostat is actually a small but powerful computer. When calculating the exact time to turn on your furnace or air conditioner, it considers (1) air temperature, (2) temperature of the wall and (3) when you want the comfort temperature established. s During the Adaptive Intelligent Recovery setting, the thermostat increases the control temperature gradually and turns the equipment on and off several times to save energy by avoiding overshooting the comfort temperature. You can see the current control temperature anytime during recovery by pressing the PRESENT SETTING key. s This smart control learns from experience. Each day it checks how closely it hit the target and adjusts the recovery start time accordingly. s It typically takes four to eight days after installation for this thermostat to adjust to the weather, your life style, home construction and heating/ cooling system. The thermostat calculates the LEAVE/RETURN recovery separately from the SLEEP/WAKE recovery. s With the T8631A, you can choose whether you want to use Adaptive Intelligent RecoveryTM or conventional recovery. Use the Adaptive Intelligent Recovery setting if you want to choose the exact time that the room reaches your comfort temperature. Use conventional recovery if you prefer to choose the exact time your furnace or air conditioner comes on to start recovery. 28 SELECTING RECOVERY SETTING Your T8631A Thermostat includes a screw on the back marked 2A, allowing for the Adaptive Intelligent RecoveryTM/Conventional Recovery choice. Your thermostat was shipped from the factory with the screw positioned for Adaptive Intelligent Recovery setting. Your installer may have left the screw in this position, or may have changed it to Conventional Recovery. Before programming, you must know which recovery method your thermostat has been set for. · With the Adaptive Intelligent Recovery setting, the dwelling will reach the comfort temperature at the exact time you have programmed into the thermostat. · With Conventional Recovery, the programmed time will be the time your furnace comes on to start recovery; therefore, you should program the start time to be earlier than the desired comfort time. It may require some trial and error for you to arrive at the best starting time, and the best starting time will vary as the seasons change. 1A 1B 2A 2B RECOVERY OPTION ADAPTIVE 2A IN HEAT CYCLE RATE SYSTEM GRAVITY AIR/WATER HOT WATER 1A OUT 1 TURN OUT 1 TURN 1B OUT 1 TURN IN CONVENTIONAL 2A OUT DISPLAY TEMPERATURE Co F M3064 o 2B IN 2B OUT IN IN GAS/OIL WARM AIR (FACTORY SETTING) ELECTRIC WARM AIR IN OUT 1 TURN 29 To determine which type of recovery is set into your T8631A Thermostat, make sure your thermostat is mounted and powered on the wall. Press key. Check thermostat display. · If the s shows in the lower righthand corner (see illustration), the thermostat is set for Conventional Recovery. If you would rather have the Adaptive Intelligent Recovery setting, remove thermostat from wall, turn screw 2A (on back of thermostat) clockwise until it bottoms. DO NOT OVERTIGHTEN. · If the s does not show, the thermostat is set for Adaptive Intelligent RecoveryTM. If you would rather have Conventional Recovery, remove thermostat from wall, turn screw 2A (on back of thermostat) out 1/2 to 1 turn. 30 RUN PROGRAM AM MON WAKE INDICATES THERMOSTAT IS SET FOR CONVENTIONAL RECOVERY