Honeywell CHRONOTHERM III T8611M manual

1 68-0076—1 CONTENTS Specifications ................................................. 2 Ordering Information ..................................... 2 Selection/Application ..................................... 5 Installation ................................................... 12 Checkout ....................................................... 18 P[...]

2 T8611M SPECIFICATIONS • ORDERING INFORMATION Specif ications Ordering Inf ormation When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE Catalog or price sheets for complete ordering number, or specify— 1. Model number. 3. Remote temperature sensing, if desired. 2. Numbe[...]

3 68-0076—1 T8611M SPECIFICATIONS Fig. 1—T8611 Subbase mounting dimensions in in. [mm]. 4 [121] 3 4 3 [83] 5 16 7 [179] 1 [46] 13 16 5 [135] 5 16 M5181A 4 3 32 [104] 1 31 32 [50] Fig. 2—202905AA Remote Sensor dimensions in in. [mm]. 4 3 32 [104] FRONT 1 31 32 [50] SIDE M5244 2 [51] 1 31 32 [50] 41 64 [16] 3 8 1 19 64 9 64 1 2 [8] [4] DIA. [13[...]

4 T8611M SPECIFICATIONS Fig. 3—Typical thermostat keypad. SYSTEM RUN PROGRAM PERIOD TIME TEMPERATURE PRESENT SETTING SKIP NEXT PERIOD CHANGE TO LAST PERIOD SET PRESENT DAY/TIME HOLD TEMP DAY SET HEAT/COOL CANCEL PERIOD COPY FROM AHEAD WARMER BACK COOLER M5360 WED MIDDAY AM HEAT ON HEAT OFF COOL ON AUTO FAN ROOM COPY TO[...]

5 68-0076—1 T8611M SELECTION/APPLICATION Selection/A pplica tion The T8611 Thermostat uses the latest microelectronic design and control technology to provide home and build- ing owners with the highest level of comfort available and optimal energy savings in a package that is easy to use and easy to live with. The following section is a guide to[...]

6 Table 2 lists features and wiring terminal functions of the TRADELINE T8611M thermostat. TABLE 2—T8611M FEATURES AND TERMINALS. T8611M FEATURES COMMENTS Heating Stages 3 May be applied to 2-stage heat pump systems; see wiring Cooling Stages 2 diagrams Figs. 6 and 7. Changeover Auto Programming 7-day SYSTEM LED Yes Lights on call for heat or coo[...]

7 68-0076—1 (continued) TABLE 3—T8611 GUIDE FOR REPLACING POPULAR T874 AND T872 THERMOSTATS, BY EQUIPMENT MANUFACTURER. (NOTE : Also see form 70-6627, Heat Pump Thermostat Cross Reference Guide, for wiring hookup illustrations.) Thermostat (Subbase Included) Auto Manual Changeover Changeover Weekday, Weekday, Sat, Sun Sat, Sun Auto T8611G1004 T[...]

8 (continued) TABLE 3—T8611 GUIDE FOR REPLACING POPULAR T874 AND T872 THERMOSTATS, BY EQUIPMENT MANUFACTURER (Continued) . (NOTE: Also see form 70-6627, Heat Pump Thermostat Cross Reference Guide, for wiring hookup illustrations.) Thermostat (Subbase Included) Auto Manual Changeover Changeover Weekday, Weekday, Sat, Sun Sat, Sun Auto T8611G1004 T[...]

9 68-0076—1 (continued) TABLE 3—T8611 GUIDE FOR REPLACING POPULAR T874 AND T872 THERMOSTATS, BY EQUIPMENT MANUFACTURER (Continued) . (NOTE : Also see form 70-6627, Heat Pump Thermostat Cross Reference Guide, for wiring hookup illustrations.) Thermostat (Subbase Included) Auto Manual Changeover Changeover Weekday, Weekday, Sat, Sun Sat, Sun Auto[...]

10 TABLE 3—T8611 GUIDE FOR REPLACING POPULAR T874 AND T872 THERMOSTATS, BY EQUIPMENT MANUFACTURER (Continued) . (NOTE: Also see form 70-6627, Heat Pump Thermostat Cross Reference Guide, for wiring hookup illustrations.) Thermostat (Subbase Included) Auto Manual Changeover Changeover Weekday, Weekday, Sat, Sun Sat, Sun Auto T8611G1004 T8611R1000 C[...]

11 68-0076—1 TABLE 3—T8611 GUIDE FOR REPLACING POPULAR T874 AND T872 THERMOSTATS, BY EQUIPMENT MANUFACTURER (Continued) . (NOTE : Also see form 70-6627, Heat Pump Thermostat Cross Reference Guide, for wiring hookup illustrations.) Thermostat (Subbase Included) Auto Manual Changeover Changeover Weekday, Weekday, Sat, Sun Sat, Sun Auto T8611G1004[...]

12 Installation COMPATIBILITY The T8611 Thermostats will replace most heat pump system thermostats. As long as ac power is continuously available to the thermostat, the thermostat will be compat- ible with almost any low-volt control system. WHEN INSTALLING THIS PRODUCT… 1. Read these instructions carefully. Failure to follow them could damage th[...]

13 68-0076—1 Fig. 4—Removing thermostat from subbase. The subbase mounts directly onto the wall with the screws and anchors included. Instead, the subbase can be mounted on a vertical or horizontal outlet box. If you must mount the subbase on a vertical outlet box, order 193121A Adapter Assembly. The assembly includes an adapter ring, two screw[...]

14 STAGE 2 COMPRESSOR CONTACTOR POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. POSSIBLE CHECK LED CIRCUITS: SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMINAL. NOMINAL 24 Vac POWER MUST BE PRESENT BETWEEN R AND C TERMINALS FOR THERMOSTAT OPERATION. RECOMMENDED INTERCONNECT CABLE: 18-GAUGE THERMOSTAT CABLE, 200 f[...]

15 68-0076—1 Fig. 7—Restrict wiring to recessed area surrounding terminals. T8611M INSTALLATION DENOTES THERMOSTAT TO SUBBASE INTERCONNECT. APPLICABLE ONLY ON MODEL WITH REMOTE SENSOR. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. POSSIBLE CHECK LED CIRCUITS: SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMIN[...]

16 Fig. 8—T8611M Thermostat with EM.HT.-HEAT-OFF-AUTO-COOL system and ON-AUTO fan switching; EM.HT., CHECK, and AUX. HT. LEDS. Applied to 3-stage heat/2-stage cool system. Fig. 9—T8611M Thermostat with EM.HT.-HEAT-OFF-AUTO-COOL system and ON-AUTO fan switching, POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. POSSIBLE[...]

17 68-0076—1 EM.HT. and CHECK LEDs. Applies to 2-stage heat/2-stage cool system in which both heating stages are compressorized. Fig.10—T8611M Thermostat with EM.HT.-HEAT- OFF-AUTO-COOL system and ON-AUTO fan switching; EM.HT., CHECK, and AUX. HT. LEDs. Applied to 2-stage heat/1-stage cool system. ADJUSTING CYCLE RATE To customize the thermosta[...]

18 Fig. 13—Mounting thermostat on subbase. Check out ! CA UTION During cold weather, some heat pumps will re- quire that crankcase heater be energized several hours before operating heat pump. Refer to manufacturer’s recommendations. HEATING NOTE: When heating setting is changed, thermostat will wait up to 5 minutes before turning on the heatin[...]

19 68-0076—1 System Press Look For This Response Switch This Key Position Key Down Key Released OFF 03 Blank 07 Blank 15 Blank COOL or 15 1st stage cooling, fan and AUTO SYSTEM LED on. (with fan 15 2nd stage cooling also on. in AUTO) 15 2nd stage cooling off. 15 1st stage cooling, fan and SYSTEM LED on. OFF 06 Blank 02 Blank 05 Blank 04 Blank 01 [...]

20 M5346 Third System Switch Sensor Digit Position Location 0 COOL, AUTO or OFF Local 1 HEAT or EM.HT. Local 4 COOL, AUTO or COOL Remote 5 HEAT or EM. HT. Remote Nominal Cycle Rate Fourth (cph at 50% load Digit for 3rd stage heat) 46 53 First Digit Degrees Clock (Hrs.) 0F 1 2 1F 2 4 2C 1 2 3C 2 4 Second Digit System Switch Position 0 EM. HT., HEAT [...]

21 68-0076—1 Press and hold until the display shows the time that the temperature should be at the comfort setting. Press and hold until the display shows the desired heating temperature. If the display flashes while holding down TEMPERATURE WARMER or COOLER, the setting limit has been reached. If thermostat is an auto changeover model, the heati[...]

22 Press and release. The display shows NIGHT and the preprogrammed time and temp-erature. Press and hold until the display shows the time to start the energy saving period. Press and hold until the display shows the desired heating temperature. Program the NIGHT time and tem- perature, if desired. Set the cooling temperatures for all the periods p[...]

23 68-0076—1 STEP 3 COPYING THE PROGRAM TO THE DESIRED DAYS It is possible to copy the program for one day to any other day or combina- tion of days. The new program will replace any program already set in the day selected. If necessary, press and release to enter the programming mode. Press and hold until the day containing the program to be cop[...]

24 Press and release so COOL shows on the display. Press and release the PERIOD key to step through the time periods, and use the WARMER/COOLER keys to set the cooling temperature for each period. This completes the time and temperature program for another day. Copy it into additional days if desired. Press and release COPY FROM to enter the copy m[...]

25 68-0076—1 Then set the system switch. (contin- ued) AUTO (select models only): The ther- mostat controls either the heating or cool- ing system, depending on room tempera- ture. COOL: The thermostat controls the cool- ing system. This completes the programming of the thermostat. If thermostat was removed from the wall to program, replace it fo[...]

26 REPROGRAMMING THE THERMOSTAT If schedule changes or a different tem- perature is desired, update any setting without affecting the rest of the pro- gram. Press and hold until the desired time period shows on the display. Press and hold until the desired schedule day shows on the display. Press and hold the Time or Temperature keys until the disp[...]

27 68-0076—1 Press and release to return to normal operation. CHECKING THE PROGRAM TIMES AND TEMPERATURES If desired, check all the stored settings without affecting the permanent program. Press and hold until the desired period shows on the display. The start time and tempera- ture setting will appear on the display. Press and release to display[...]

28 the auxiliary heat even when the T8611 is calling for it. (Balance point is the outdoor temperature below which the heat pump must call on auxiliary heat to help handle the load.) The resulting unnecessarily long recovery times reduce building energy savings. When Adaptive Intelligent Recovery™ Is Used Adaptive Intelligent Recovery™ is used [...]

29 68-0076—1 T r oub leshooting HEAT PUMP OR AUXILIAR Y HEAT WO N' T O PER ATE NO a c P OWE R TO THE RMOS TAT CH ECK POWER TO HEAT PUMP OR AUXILIAR Y HEATI NG S YS TEM – ON -OFF S WITC H –FUS E OR CIR CUIT BR EAKER – L OOS E 2 4 V C ON N E C TION -AT T HER MO S TAT -AT HEAT PUMP OR AUXILIAR Y HEATI NG S YS TEM –I NCO R R ECT W IR ING[...]

30 conditioning equipment to return the building from the energy saving temperature to the comfort temperature. The thermostat starts the recovery period early so the building will be at the comfort setting by the time the owner has chosen. Setback Reducing the temperature in the building for a set period in heating for energy savings. The lower te[...]

31 68-0076—1 T8611M TABLE OF CONTENTS T able of Contents Page Specifications ................................................................................................................. ................................................... 2 Ordering Information ..................................................................................[...]

32 Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario M1P 2V9 Printed in U.S.A. QUALITY IS KEY[...]