Files for CHRONOTHERM III T8611M(7-Day Programming)
LIGHT-EMITTING DIODES (LEDs):
![Honeywell chronotherm iii wiring Honeywell chronotherm iii wiring](https://www.u-manual.com/image/big/6e78eb4a35a429b78a99ce5af9202f88-3-download-manual-now-for-free-central-heating-honeywell-chronotherm-modulation.jpeg)
Fig.10—T8611M Thermostat withEM.HT.-HEAT- OFF-AUTO-COOL system andON-AUTO fan switching; EM.HT., CHECK, and AUX. HT. LEDs. Applied to2-stage heat/1-stage cool system.
![Pdf Pdf](https://d2ydh70d4b5xgv.cloudfront.net/images/4/a/new-honeywell-7-day-programmable-thermostat-rth2510b-18f71d91b34fdb06d274f81999f874f5.jpg)
MINIMUM-OFF TIMING
MINIMUM-OFF TIMES IN THERMOSTAT IN OPERATION ON COOLING OR HEATING
Energy-saving temperature
MORNING—The time period when the owner brings the building to a comfortable temperature to begin the day. This is the only period that must contain a time and temperature for every day.MIDDAY—The time period when the owner can set back (heating) or set up (cooling) the temperature for daytime energy savings if the building is unoccupied.EVENING—The time period when the owner wants the building at a comfortable temperature for evening activities after daytime energy savings.NIGHT—The time period when the owner can set back (heating ) or set up (cooling) the temperature for energy savings because family members are asleep or the building is unoccupied. Often a NIGHT energy savings temperature is set only for the heating season so family members can sleep cool in summer.
- #12.09.2015333.79 Kb4User Manual.pdf
T8611M (7-Day Programming). Chronotherm III™ Heat Pump Thermostats. The T8611M Chronotherm III Programmable. Thermostat provides automatic control of multistage heat pump systems and offers users the highest standard of comfort and convenience available with energy savings. When you purchased your new Honeywell Chronotherm Ill Thermostat. It's the smart thermostat that: Keeps you comfortable by automati- cally calculating exactly when the furnace or air conditioning should go on to have the house at the desired comfort temperature at the time you want. Saves the maximum amount of energy and money by remembering to. Honeywell Chronotherm III Thermostat shows time of day-AC. No heat in the 2 zones with this message. Hello,Message AC means that there is no 24volt power to the thermostat from the unit/s it controls.Please check all switches & curcit breakers to the unit/s as there is no low voltage power to the thremostat from the transformer in the unit/s.
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T8611M
Chronotherm III™
Heat Pump Thermostats
The T8611M Chronotherm III Programmable
Thermostat provides automatic control of multistage heat pump systems and offers users the highest standard of comfort and convenience available with energy savings.
■Full seven-day program capability; different schedules may be selected for every day.
■Can be programmed in hand (with batteries installed) or on the wall to provide up to four temperature periods per day.
■Large digital clock (liquid crystal display) indicates continuous time-of-day, day-of-week, current period and room temperature.
■Adaptive Intelligent Recovery™ brings room temperature to programmed temperature at programmed time, maximizing comfort and energy savings.
■Temperature control program maintains temperature within 1° F of setpoint.
■Temporary program override available by using--
--WARMER and COOLER keys.
--SKIP next period key.
--CHANGE to last period key.
■HOLD TEMP key provided for indefinite program override (vacation/holiday).
■Installer self-test with time delay override saves installation time.
■SYSTEM light-emitting diode (LED) on thermo-
temperature sensing.
stat indicates system is energized.
■AUX. HT., EM. HT., CHECK LEDs available on select models.
■Automatic heat/cool changeover.
■Batteries included provide power to maintain clock and memory during power failures.
■Switching subbase with wiring terminals included.
■Powered directly from control transformer.
■Model available with separate sensor for remote
CONTENTS | |
Specifications ......................... | 2 |
Ordering Information ................... | 2 |
Selection/Application ................... | 5 |
Installation .......................... | 12 |
Checkout ............................ | 18 |
Programming The Thermostat ........... | 20 |
Operating The Thermostat .............. | 25 |
Operation ........................... | 27 |
Troubleshooting ...................... | 29 |
Glossary ............................ | 30 |
Table of Contents ..................... | 32 |
1 |
C. H. • Rev. 10-92 • ©Honeywell Inc. 1992 • Form Number68-0076—1
T8611M
SPECIFICATIONS • ORDERING INFORMATION
Specifications
TRADELINE MODELS
TRADELINE models are selected and packaged to provide ease of stocking and handling and also maximum
replacement value.
TRADELINE models available are listed in Table 1.
TABLE 1—TRADELINE MODELS AVAILABLE.
Stages | Changeover | Switching | |||||
Thermostat | Heat | Cool | Type | System | Fan | Application | Program |
T8611M* | 3 | 2 | Automatic | EM. | Heat Pump | ||
*Model available with separate sensor for remote temperature sensing.
SYSTEM LED (yellow) on thermostat lights during thermostat heating and cooling ON cycles.
EM.HT. LED (red) on subbase lights when system switch is in EM.HT. On some systems, light may indicate need to switch to EM.HT. because of heat pump problem.
AUX. HT. LED (green) on subbase lights when thermostat is calling for operation of auxiliary heat.
CHECK LED (yellow) on subbase lights when an equipment or system problem needs to be checked. Consult heat pump literature to determine meaning.
VOLTAGE RATING: 15 to 30 Vac.
CURRENT RATING: 1.6A maximum, total per stage. OPERATING HUMIDITY RANGE: 5 to 90 percent rela-
tive humidity, noncondensing.
OPERATING AMBIENT TEMPERATURE RANGE: 40° F to 110° F [4° C to 43° C].
SET POINT RANGE: 45° F to 88° F [7° C to 31° C].
CALIBRATION: Self-calibrating thermostat and thermometer to ±1° F.
SHIPPING TEMPERATURE: -20° F to +120° F[-29° C to +49° C].
CYCLES PER HOUR ADJUSTMENT:
Auxiliary heating—factory-set at 3 cph (adjustable to
6 cph for special systems); minimum off-time of five minutes.
Nonauxiliary heating and cooling—factory-set (not field adjustable); minimumoff-time of five minutes.
FINISH: Beige matte with decorative brushed metal faceplate.
DIMENSIONS: Thermostat (mounted on subbase)—7 in. [178 mm] long,5-5/16 in. [135 mm] high,1-3/4 in. [44 mm] deep. See Fig. 1 for subbase dimensions. See Fig. 2 for remote sensor dimensions.
TYPICAL KEYPAD: See Fig. 3. REPLACEMENT PARTS:
202905AA Remote Temperature Sensor. 220529 Replacement Door.
AAA alkaline batteries, available locally. ACCESSORIES:
193121A Cover Plate Assembly. Includes cover plate, adapter ring and screws; 6-9/10 in. x4-3/4 in. [175 mm x 121 mm]. Covers marks left by old thermostat. Allows mounting on vertical or horizontal outlet box.
TG512 Universal Thermostat Guards. Includes clear or opaque plastic or metal cover, ring base, opaque plastic wallplate, tumbler lock with two keys.
TG586A Locking Cover.
Ordering Information
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. Number of heat and cool stages desired.
If you have additional questions, need further information or would like to comment on our products or services, please write or phone:
1.Your local Honeywell Home and Building Control Sales Office (check white pages of your phone directory).
2.Home and Building Control Customer Satisfaction Honeywell inc., 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 (612)951-1000
In Canada—Honeywell Limited/Honeywell Limitée 740 Ellesmere Road, Scarborough, Ontario M1P 2V9. International sales and service offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
T8611M
SPECIFICATIONS
Fig. 1—T8611 Subbase mounting dimensions in in. [mm].
13132
[50]
13
116 [46]
3
4 32 [104]
5
516 [135]
5
316 [83]
3
4 4 [121]
7 [179]
M5181A
Fig. 2—202905AA Remote Sensor dimensions in in. [mm].
FRONT | SIDE | BACK | ||
1 31 | 2 | |||
[51] | ||||
32 | ||||
[50] |
1 | 31 | [50] | |
32 | 19 | [8] | |
64 | |||
3 | |||
4 32 | 41 | [16] | |
[104] | 64 | 9 | [4] |
1 3 | [35] | 64 | |
8 | |||
1 | DIA. | ||
2 | |||
[13] |
1 [25] | M5244 |
T8611M
SPECIFICATIONS
Fig. 3—Typical thermostat keypad.
AM | SYSTEM | |||||
ROOM | ||||||
WED | ||||||
MIDDAY | HEAT ON | |||||
TEMPERATURE | ||||||
RUN | PRESENT | |||||
SETTING | ||||||
PROGRAM | ||||||
TIME | ||||||
SET | COPY | SKIP | ||||
PRESENT | DAY | PERIOD | AHEAD | WARMER | NEXT | |
FROM | ||||||
DAY/TIME | PERIOD | |||||
HOLD | SET | CANCEL | COPY | BACK | COOLER | CHANGE |
TO LAST | ||||||
TEMP | HEAT/COOL | PERIOD | TO | |||
PERIOD |
FAN
HEAT OFF COOL | ON AUTO |
M5360
T8611M
SELECTION/APPLICATION
Selection/Application
The T8611 Thermostat uses the latest microelectronic design and control technology to provide home and building 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 selection and application of the best thermostat to meet individual customer needs.
PROGRAMMING
Does the thermostat selected accommodate the customer’s daily schedule, lifestyle or work schedule? Refer to choices below.
TRADELINE | Daily Temperature | |
Device | Programming | Selection |
T8611G,R* | Weekday, | 4 heat and |
Sat, Sun. | 4 cool | |
T8611M | 4 heat and | |
(each day | 4 cool | |
different) |
*Specifications form 68-0057 for information.
IF NEW CONSTRUCTION APPLICATION, CONSIDER
•equipment type (see manufacturer’s specifications)
--system switching required
--status indication provided
•control wiring—number of conductors required to operate equipment and thermostat.
IMPORTANT: The T8611 requires a conductor to transformer common to provide continuous 24V power for thermostat operation. This feature is commonly specified and provided by equipment manufacturer.
IF RETROFIT/REPLACEMENT APPLICATION, CONSIDER
•equipment requirements
--system switching (manual: EM. HT.-HEAT-OFF- COOL, automatic: EM.HT.-HEAT-OFF-AUTO- COOL).
--unique heat pump functions of emergency or supplemental heat, changeover on heat or cool, and status indication.
--Table 3 lists typical applications by manufacturer.
•existing wiring
--Are there enough conductors to operate the equipment and the thermostat? Can a new cable be pulled?
•existing thermostat
--Table 3 is a guide for replacing popular Honeywell standard nonprogrammable thermostats with a T8611.
SECURITY
Does the thermostat selected provide access to programming and the override features that will best suit the application? Refer to choices below.
Typical | ||
Access | Application | Device |
Free access to | Home or | T8611 |
programming | ||
and adjustment/ | commercial | |
override. | building. | |
Restricted | Public building. | T8611 with TG512 |
access to | Locking Cover; | |
device. | T8611 with remote | |
temperature | ||
sensing. |
T8611M
SELECTION/APPLICATION
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 | ||
Cooling Stages | 2 | diagrams Figs. 6 and 7. | ||
Changeover | Auto | |||
Programming | ||||
SYSTEM LED | Yes | Lights on call for heat or cool. | ||
EM. HEAT LED (red) | Yes | Lights continuously in EM. HEAT mode. | ||
AUX. HEAT LED (green) | Yes | Lights during call for final auxiliary heat stage. | ||
CHECK LED (yellow) | Yes | Field wired option; indicates equipment malfunction. | ||
Remote Temperature | Yes | Available on T8611M7040 only. (202905A Remote Sensor | ||
Sensing | included). | |||
WIRING TERMINAL | ||||
FUNCTION | ||||
24 Vac Common | C | Must be connected to control transformer to operate | ||
thermostat. | ||||
24 Vac Power | R | |||
Compressor, Stage 1 | Y | |||
heat and cool. | ||||
Compressor, | Y2 | If applying T8611M to | ||
Stage 2 cool | unconnected. | |||
Second Stage Heat | W2 | If applying T8611M to | ||
Auxiliary (Resistive) | second stage is compressorized, connect stage 2 to W2; | |||
Third Stage Heat | W3 | leave W3 unconnected. | ||
If | ||||
(electric resistive), connect auxiliary stage to W3; leave | ||||
W2 unconnected. | ||||
Fan | G | |||
Changeover Heat Mode | B | O/B changeover terminals are energized continuously | ||
following first call for cool or heat, respectively. | ||||
Changeover Cool Mode | O | |||
System Monitor, | L | Energizes EM. HEAT LED when externally powered. | ||
continuously energized | ||||
in EM. HEAT mode. | ||||
Emergency Heat | E | |||
energized on call for | ||||
stage 1 heat in | ||||
EM. HEAT mode | ||||
Check LED terminals | X1 | X2 | See wiring diagrams for hookup alternatives. | |
to indicate equipment | ||||
malfunction | ||||
Remote Temperature | S1 | S2 | S3 | Available on T8611M7040 only. Must be connected to |
Sensing | 202905A Remote Sensor for proper thermostat operation. |
T8611M
SELECTION/APPLICATION
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 | T8611R1000 | Changeover | ||||||||
T8611G1012 (° C) | T8611R1042 (° C) | |||||||||
T8611G1103 | T8611R1141 | T8611M7008 | ||||||||
(Premier White) | (Premier White) | T8611M7040c | Thermostat | Subbase | Thermostat | Subbase | ||||
(also see form | T874 | Q674 | T872 | Q672 | Comments | |||||
Amana | ||||||||||
• | D1009 | F1022 | D1003 | F1026 | Separate first stage | |||||
• | Crazy mp3 download. D1017 | D1011 | heat/cool terminals W1, Y1. | |||||||
• | D1165 | D1300 | ||||||||
Arco/Comfort Maker | ||||||||||
• | a | • | na | na | na | na | Check LED optional; | |||
• | ||||||||||
X = X1, jump X2 to C. | ||||||||||
Arco/Friedrich | ||||||||||
• | a | • | na | na | na | na | Changeover on heat, | |||
• | ||||||||||
check LED optional. | ||||||||||
Bard | ||||||||||
• | a | • | N1024 | F1261 | N1036 | F1299 | Changeover on heat (typical), | |||
• | ||||||||||
• | • | • | R1129 | L1181 | R1146 | L1185 | check LED optional, equipment | |||
terminal W1 to thermostat B. | ||||||||||
Bryant, | ||||||||||
•b | •a,b | •b | G1451 | F1113b | G1166 | F1125 | Check LED optional; F = X1, | |||
• | a | • | G1261 | F1253 | jump X2 to C. Note: P terminal | |||||
• | ||||||||||
• | a | • | J1010 | L1371 | G1174 | available | on | manual | ||
• | ||||||||||
changeover | a | |||||||||
• | • | R1335 | L1405 | (T8611R) models only. | ||||||
• | ||||||||||
a | Carrier | |||||||||
• | • | G1055 | J1035 | G1075 | J1054 | Check LED optional (typical) | ||||
• | ||||||||||
• | • | • | G1071 | L1041 | G1158 | L1052 | ||||
• | • | • | G1121 | L1397 | G1182 | |||||
• | • | • | P1005 | G1273 | ||||||
• | • | • | G1307 | |||||||
• | • | • | G1257 | L1169 | ||||||
• | • | • | J1002 | L1371 | ||||||
• | • | • | J1028 | L1074 | ||||||
• | D1074 | F1059 | Multistage heat pump | |||||||
• | F1030 | |||||||||
• | F1063 | |||||||||
• | E1114 | No Supl. Ht. function | ||||||||
• | E1042 | No Supl. Ht. function | ||||||||
• | D1264 | L1116 | Multistage heat pump | |||||||
Command | Aire | |||||||||
• | • | • | H1005 | C1041 | H1009 | C1086 | No AUX. HEAT or EM. | |||
• | • | • | G1352 | C1066 | HEAT required; Y1 = 0 | |||||
a No CHECK LED. | ||||||||||
b Dual transformer requires conversion to single transformer. | ||||||||||
c Model includes separate sensor for remote temperature sensing. | (continued) |
T8611M
SELECTION/APPLICATION
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 | Changeover | |||||||||||
T8611G1012 (° C) | T8611R1042 (° C) | ||||||||||||
T8611G1103 | T8611R1141 | T8611M7008 | |||||||||||
(Premier White) | (Premier White) | T8611M7040c Thermostat | Subbase Thermostat | Subbase | |||||||||
T874 | Q674 | T872 | Q672 | Comments | |||||||||
(also see | form | ||||||||||||
a | Coleman | ||||||||||||
• | • | R1368 | L1421 | na | na | Late models optional check | |||||||
• | |||||||||||||
LED. Z = X2, jump X1 and C, | |||||||||||||
K = L. | |||||||||||||
• | • | • | na | na | na | na | Earlier T.H.E. models with | ||||||
require relay isolation. | |||||||||||||
Crispaire/Marvair | |||||||||||||
• | • | • | G1089 | F1162 | G1208 | F1166 | |||||||
F1204 | F1323 | ||||||||||||
• | • | • | R1111 | L1215 | R1156 | L1094 | |||||||
Fedders/Airtemp/Climatrol | |||||||||||||
•a | C1398 | L1090 | C1509 | L1102 Separate first stage heat/cool | |||||||||
•a | C1406 | C1517 | terminals required; check LED | ||||||||||
•a | C1414 | C1541 | optional; equipment terminal | ||||||||||
K to thermostat E. | |||||||||||||
a | Florida Heat Pump | ||||||||||||
• | • | na | na | na | na | Optional check LED; | |||||||
• | |||||||||||||
X = X1, jump X2 to C. | |||||||||||||
Heatwave/Southwest | Mfg. | ||||||||||||
• | • | • | G1105 | F1170 | G1232 | F1224 | |||||||
Heil | Quaker/Whirlpool/Tempstar | ||||||||||||
• | • | • | R1137 | L1132 | R1172 | L1193 | Equipment terminal B | ||||||
to thermostat C. | |||||||||||||
Honeywell | |||||||||||||
• | F1006 | F1000 | Separate first stage | ||||||||||
• | F1022 | F1026 | heat/cool terminals. | ||||||||||
• | F1048 | F1042 | |||||||||||
• | C1000 | F1089 | C1004 | F1075 | |||||||||
• | • | C1018 | C1038 | °C | |||||||||
• | • | C1117 | C1350 | ||||||||||
• | • | C1240 | C1566 | °C | |||||||||
• | • | • | G1246 | F1212 | G1224 | F1208 | TRADELINE | ||||||
• | • | • | G1444 | G1000 | F1018 | °C | |||||||
• | • | • | G1018 | ||||||||||
• | • | • | G1212 | F1238 | G1083 | F1158 | |||||||
• | • | • | G1139 | ||||||||||
a No CHECK LED. | |||||||||||||
b Dual transformer requires conversion to single transformer. | |||||||||||||
c Model includes separate sensor for remote temperature sensing. | (continued) |
T8611M
SELECTION/APPLICATION
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 | Changeover | |||||||||||
T8611G1012 (° C) | T8611R1042 (° C) | ||||||||||||
T8611G1103 | T8611R1141 | T8611M7008 | |||||||||||
(Premier White) | (Premier White) | T8611M7040c Thermostat | Subbase Thermostat | Subbase | |||||||||
(also see | form | T874 | Q674 | T872 | Q672 | Comments | |||||||
Honeywell | (continued) | ||||||||||||
• | • | • | N1016 | F1220 | N1002 | F1133 Changeover on heat; equip- | |||||||
• | • | • | N1040 | F1261 | N1028 | F1216 ment terminal C to thermostat | |||||||
• | • | • | R1004 | B1042 | R1008 | B1046 Y, W1 to B, K to E. | |||||||
• | • | • | B1109 | R1057 | L1037 | ||||||||
• | • | • | R1152 | L1207 | R1198 | L1227 | |||||||
• | • | • | R1285 | L1157 | |||||||||
• | • | • | R1350 | L1181 | |||||||||
Janitrol/Tappan | |||||||||||||
• | • | • | G1147 | F1139 | G1109 | F1117 Equipment terminal C to | |||||||
thermostat C. | |||||||||||||
VA | Lennox | NOTE: Rewire for single 75 | |||||||||||
transformer if | |||||||||||||
• | • | • | G1014 | F1113 | G1026 | F1067 | system. | ||||||
°C | |||||||||||||
• | • | • | G1022 | E1148 | G1125 | E1019 | |||||||
• | • | • | G1162 | G1091 | DoD | ||||||||
• | • | • | G1154 | F1105 | G1323 | L1201 | |||||||
• | • | • | R1024 | B1160 | |||||||||
• | • | • | R1040 | B1202 | |||||||||
• | • | • | R1178 | L1355 | |||||||||
• | • | • | L1165 | ||||||||||
• | • | • | C1148 | L1165 | |||||||||
• | D1207 | L1199 | |||||||||||
• | L1389 | LED; thermistor A not used. | |||||||||||
Ter- | minal | Conversion | |||||||||||
Guide: | Lennox Standard | ||||||||||||
Transformer | |||||||||||||
Common | X | C | |||||||||||
Transformer | |||||||||||||
Power | VR (in) | R | |||||||||||
V (out) | |||||||||||||
Compressor | M | Y | |||||||||||
M2 | Y2 | ||||||||||||
Aux. Heating | Y | W2 | |||||||||||
Fan | F | G | |||||||||||
Changeover | R | O | |||||||||||
System Monitor | L | L,X1,X2 | |||||||||||
Em.Heat (cycling) | E | E | |||||||||||
Thermistor | A | T (not | |||||||||||
required) | |||||||||||||
a No CHECK LED. | (continued) | ||||||||||||
b Dual transformer requires conversion to single transformer. | |||||||||||||
9 | |||||||||||||
c Model includes separate sensor for remote temperature sensing. |
T8611M
SELECTION/APPLICATION
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 | Changeover | |||||||
T8611G1012 (° C) | T8611R1042 (° C) | ||||||||
T8611G1103 | T8611R1141 | T8611M7008 | |||||||
(Premier White) | (Premier White) | T8611M7040c | Thermostat | Subbase | Thermostat | Subbase | |||
(also see | form | T874 | Q674 | T872 | Q672 | Comments | |||
Luxaire | |||||||||
• | • | • | G (Borg | F1188 | G1315 | F1281 | |||
Warner) | |||||||||
Magic Chef | |||||||||
• | na | na | na | na | Earlier PB series, separate first | ||||
a | stage heat/cool. | ||||||||
• | • | na | na | na | na | Late PE series, optional check | |||
• | |||||||||
LED; X1 = X1, jump X2 to R. | |||||||||
Rheem/Ruud | |||||||||
• | • | • | G1097 | F1238 | G1133 | F1158 | |||
• | • | • | G1238 | G1141 | L1157 | ||||
• | • | • | R1081 | L1045 | |||||
• | • | • | G1220 | R1107 | L1136 | ||||
• | • | • | R1079 | ||||||
• | • | • | R1095 | ||||||
Square D/Sun Dial | |||||||||
•a | C1224 | F1071 | C1525 | F1182 | Separate first stage heat/cool | ||||
required; optional check LED; | |||||||||
X = X1, jump X2 to R. | |||||||||
Trane/General Electric | |||||||||
• | a | • | G1204 | J1043 | G1059 | J1039 | Optional check LED; F = X1, | ||
• | |||||||||
jump X2 to C; T not used; | |||||||||
equipment terminal B to ther- | |||||||||
mostat C, R to R, Y to Y (Y1 + | |||||||||
W1), W to W2, G to G, 0 to 0, | |||||||||
X2 to E. | |||||||||
Weather King | |||||||||
• | • | • | na | na | G1265 | F1265 | Optional check LED; X = X1, | ||
jump X2 to R; equipment ter- | |||||||||
minal C to thermostat C, W1 | |||||||||
to Y (W1 + Y1), E to W2, | |||||||||
Y1 to 0. |
aNo CHECK LED.
bDual transformer requires conversion to single transformer.
cModel includes separate sensor for remote temperature sensing.
(continued)
T8611M
SELECTION/APPLICATION
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 | Changeover | |||||||
T8611G1012 (° C) | T8611R1042 (° C) | ||||||||
T8611G1103 | T8611R1141 | T8611M7008 | |||||||
(Premier White) | (Premier White) | T8611M7040c | Thermostat | Subbase | Thermostat | Subbase | |||
(also see | form | T874 | T872 | Q672 | Comments | ||||
Wesco/Addison | |||||||||
• | • | • | G1287 | F1253 | Equipment terminal C1 to ther- | ||||
mostat C, W1 to Y (W1 + Y1), | |||||||||
• | • | • | R1012 | B1109 | R1016 | B1103 | Y1 to 0. Common to thermostat | ||
• | • | • | G1265 | F1265 | direct from control transformer. | ||||
• | • | • | G1281 | ||||||
Westinghouse | |||||||||
• | • | • | G1048 | F1121 | G1034 | F1141 | |||
• | • | • | F1246 | F1091 | |||||
• | • | • | F1279 | F1257 | |||||
• | • | • | J1019 | J1013 | |||||
• | • | • | J1050 | J1062 | |||||
• | • | • | R1103 | L1108 | R1149 | L1110 | |||
• | • | • | L1173 | L1128 | |||||
• | • | • | L1151 | ||||||
• | na | na | na | na | Separate first stage heat/cool | ||||
ter- | minals required. | ||||||||
• | D1108 | L1223 | G1356 | L1219 | |||||
check LED; L = X1, jump | |||||||||
X2 to C. | |||||||||
White Rodgers | |||||||||
• | • | • | na | na | na | na | |||
Williamson | |||||||||
• | • | • | R1236 | L1348 | na | na | |||
• | • | • | N1008 | F1196 | na | na | Changeover on heat; W1 = B. | ||
York/Borg Warner | |||||||||
• | a | • | G1170 | J1027 | G1042 | J1021 | Optional check LED; X = X1, | ||
• | |||||||||
• | • | • | G1295 | F1311 | G1299 | L1177 | jump X2 to C; equipment ter- | ||
• | • | • | G1345 | L1363 | G1331 | D1077 | minal B to thermostat C, | ||
• | • | • | G1402 | D1032 | G1364 | W to W2, H to B, T not re- | |||
quired. | |||||||||
• | • | • | G1410 | G1398 | |||||
• | • | • | G1428 | ||||||
• | • | • | G1436 | ||||||
• | • | • | R1046 | L1017 | R1032 | L1011 | |||
• | • | • | R1169 | L1330 | |||||
• | • | • | R1251 | L1272 | |||||
Zone Aire | |||||||||
• | • | • | N1040 | F1261 | Changeover on heat; | ||||
• | • | • | R1350 | L1181 | W1 = B. |
aNo CHECK LED.
bDual transformer requires conversion to single transformer.
cModel includes separate sensor for remote temperature sensing.
11 |
![Honeywell chronotherm iii wiring Honeywell chronotherm iii wiring](https://www.u-manual.com/image/big/6e78eb4a35a429b78a99ce5af9202f88-3-download-manual-now-for-free-central-heating-honeywell-chronotherm-modulation.jpeg)
T8611M
INSTALLATION
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 compatible with almost any low-volt control system.
WHEN INSTALLING THIS PRODUCT…
1.Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.
2.Check the ratings given on the product to make sure the product is suitable for your application.
3.Installer must be a trained, experienced service technician.
4.Allow thermostat to warm to room temperature before operating.
5.After installation is complete, check out product operation as provided in these instructions.
! CAUTION
Disconnect power supply to prevent electrical shock or equipment damage.
LOCATION
Thermostat with Integral Sensor
Install thermostat and subbase about 5 ft. [1.5 m] above the floor in an area with good air circulation at room temperature.
Do not install the thermostat where it may be affected by--
--drafts or dead spots behind doors, in corners or under cabinets.
--hot or cold air from ducts.
--radiant heat from sun or appliances.
--concealed pipes and chimneys.
--unheated (uncooled) areas behind the thermostat, such as an outside wall.
Thermostat with Remote-Mounted Sensor
Install thermostat in an area that is accessible for setting and adjusting the temperature and settings.
Install remote temperature sensor in an area with good air circulation at average temperature.
Do not install the sensor where it may be affected by--
--drafts or dead spots behind doors, in corners, or under cabinets.
--hot or cold air from ducts.
--radiant heat from sun or appliances.
--concealed pipes and chimneys.
--unheated (uncooled) areas behind the sensor, such as an outside wall.
IF REPLACING AN EXISTING THERMOSTAT
Turn thermostat power off at furnace or heat pump.
This thermostat requires a single transformer. A twotransformer system may require turning off two switches or disconnects, and rewiring to run the thermostat from a single transformer. Make sure the transformer has adequate power (VA) for the heating/cooling control system. Add current ratings of the system components (such as auxiliary heat relay, changeover relay, fan relay). Multiply this total by 24V to determine transformer VA required.
Remove any existing wallplate or subbase from wall. Label or write down each wire color with the letter or number on the wiring terminal as the wire is removed to avoid miswiring later.
IF NEW INSTALLATION
Run cable to a hole at the selected wall location for thermostat and remote sensor, and pull about 3 in. [76 mm] of wire through the opening. Color-coded, 18-gauge thermostat cable with at least one conductor for each wiring terminal is recommended. Good service practice recommends selecting cable with one or two more conductors than the immediate application requires.
If using thermostat model with remote temperature sensing, run 3-wire, 18-gauge thermostat cable from the thermostat location to the sensor location (200 ft. [61 m] maximum). Route cable away from sources of electrical noise.
MOUNTING SUBBASE
IMPORTANT: Set the subbase system switch in the OFF position before mounting.
The subbase does not require leveling for operation, but
for appearance only.
Remove thermostat from subbase (Fig. 4).
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 screws and a cover plate to cover marks on the wall. Install the ring and cover plate on the vertical outlet box as instructed.
Use the subbase as a template, and with a pencil, mark the two mounting screw positions (Fig. 5).
If drywall construction, plastic anchors must be used; use 3/16 in. bit to drill holes for anchors. Gently tap anchors into holes until they are flush with the wall surface.
Thread wires through the center opening of the subbase.
Mount the subbase using two screws provided. Gently tighten screws, level top surface of subbase, and securely tighten screws.
Fig. 5—Mounting subbase on wall.
MOUNTING REMOTE TEMPERATURE SENSOR (IF APPLICABLE)
The remote sensor mounts directly on the wall with screws and anchors included. Remove cover from remote sensor (Fig. 6). Use the remote sensor base as a template, and with a pencil, mark holes for mounting screws.
T8611M
INSTALLATION
Use a 3/16 in. bit to drill the required holes. Gently tap anchors into holes until they are flush with the wall
WALL
REMOTE SENSOR COVER
WIRES THROUGH WALL OPENING
WALL
ANCHORS (2)
MOUNTING HOLES | |
WIRING | |
REMOTE | HOLE |
SENSOR BASE | MOUNTING |
M1549B | SCREWS (2) |
surface. Thread wires through the opening in the base. Mount remote sensor base using the screws provided. See Fig. 6. Make sure base looks level before tightening screws.
Fig. 6—Mounting remote sensor base on wall.
WIRING
All wiring must comply with local electrical codes and ordinances.
Disconnect power before wiring to prevent electrical shock or equipment damage.
The shape of the terminal barrier permits insertion of straight or conventional wraparound wiring connections. Either method is acceptable.
Push excess wire back into the hole, and plug hole with nonhardening caulk, putty or insulation to prevent drafts from affecting operation of thermostat and remote sensor, if applicable.
Refer to Figs. 8-10 for typical hookups of subbase and thermostat.
After wiring remote sensor, replace cover.
NOTE: Restrict all wiring to recessed area surrounding
T8611M
INSTALLATION
terminals (Fig. 7) to assure thermostat/subbase contact.
POWER |
SUPPLY |
THERMOSTAT | SUBBASE |
LOGIC/ | |
LOGIC | |
CONTROL | |
CIRCUIT | |
CIRCUIT |
R
4
HIGH LIMIT
FAN | C |
AUX. HEAT | |
SWITCH | |
LED (GRN) MONITOR | |
EM. HEAT | |
ON | |
LED (RED) | L |
AUTO | AUXILIARY |
HEAT RELAY | |
W3 | |
HEAT 3 | STAGE 2 |
HEAT RELAY | |
W2 | |
HEAT 2 | EMERGENCY |
HEAT RELAY | |
E | |
FAN RELAY | |
SYSTEM | G |
SWITCH |
CHANGEOVER | ||
EM. HT. | RELAY (COOL) | |
HEAT | O | |
OFF | C.O. | CHANGEOVER |
RELAY (HEAT) | ||
AUTO | B | |
COOL | ||
COOL 1 | C.O. | STAGE 1 COMPRESSOR |
CONTACTOR | ||
HEAT 1 | Y |
HIGH | STAGE 2 COMPRESSOR | ||
CONTACTOR | |||
LIMIT | |||
Y2 | |||
COOL 2 | |||
S1 | S1 | 6 | |
S2 | S2 | X2 | 2 |
CHECK LED | |||
S3 | |||
Pokemon elements game. (YELLOW) | |||
5 | 202905 REMOTE | X1 | |
SENSOR |
1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2POSSIBLE CHECK LED CIRCUITS:
X2 | TO R | X2 | TO R | X2 | L1 | |
CHECK | FAULT DETECTION | CHECK | FAULT DETECTION | CHECK | SWITCHING | (HOT) |
LED | LED | LED | ||||
SWITCH | SWITCH | DEVICE | 1 | |||
(YELLOW) | (YELLOW) | (YELLOW) | ||||
24 Vac | ||||||
X1 | TO C | X1 | TO C | X1 | L2 |
SWITCH TO C (COMMON) SIDE | SWITCH IN SECONDARY OF |
SEPARATE TRANSFORMER | |
OF SYSTEM TRANSFORMER |
3 | SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMINAL. |
4 | NOMINAL 24 Vac POWER MUST BE PRESENT BETWEEN R AND C TERMINALS FOR THERMOSTAT OPERATION. |
5 | RECOMMENDED INTERCONNECT CABLE: |
CABLE AWAY FROM SOURCES OF ELECTRICAL NOISE. | |
6 | APPLICABLE ONLY ON MODEL WITH REMOTE SENSOR. |
7 | DENOTES THERMOSTAT TO SUBBASE INTERCONNECT. |
M1017D
T8611M
INSTALLATION
Fig. 7—Restrict wiring to recessed area surrounding terminals.
6 | R | ||
POWER | 4 | ||
HIGH | |||
SUPPLY | LIMIT | 3 | |
C | |||
FAN | EM. HEAT | AUX. HEAT | MONITOR |
SWITCH | LED (RED) | LED (GRN) | |
ON | L | ||
AUTO | |||
W3 | |||
HEAT 3 | STAGE 2 | ||
HEAT RELAY | |||
W2 | |||
HEAT 2 | EMERGENCY | ||
SUBBASE | HEAT RELAY | ||
THERMOSTAT | |||
LOGIC/ | E | ||
LOGIC | |||
CONTROL | |||
CIRCUIT | |||
CIRCUIT | |||
FAN RELAY | |||
SYSTEM | G | ||
SWITCH |
EM. HT. | CHANGEOVER | |
RELAY (COOL) | ||
HEAT | O | |
OFF | C.O. | CHANGEOVER |
RELAY (HEAT) |
AUTO | B |
COOL | |
C.O. | |
COOL 1 | |
STAGE 1 COMPRESSOR | |
CONTACTOR | |
Y | |
HEAT 1 | STAGE 2 COMPRESSOR |
CONTACTOR | |
HIGH | |
LIMIT | Y2 |
COOL 2 |
7 | X2 | |
S1 | S1 | CHECK LED |
(YELLOW) |
S2S2
X1
S3S3
5 202905 REMOTE SENSOR
1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2POSSIBLE CHECK LED CIRCUITS:
X2 | TO R | X2 | TO R | X2 | |
CHECK | FAULT DETECTION | CHECK | FAULT DETECTION | CHECK | SWITCHING |
LED | LED | LED | |||
(YELLOW) | SWITCH | (YELLOW) | SWITCH | (YELLOW)DEVICE | |
24 Vac | |||||
X1 | TO C | X1 | TO C | X1 | |
SWITCH TO R (POWER) SIDE OF | SWITCH TO C (COMMON) SIDE | SWITCH IN SECONDARY OF | |||
SYSTEM TRANSFORMER | SEPARATE TRANSFORMER | ||||
OF SYSTEM TRANSFORMER |
3 SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMINAL.
4 NOMINAL 24 Vac POWER MUST BE PRESENT BETWEEN R AND C TERMINALS FOR THERMOSTAT OPERATION.
5RECOMMENDED INTERCONNECT CABLE: 18-GAUGE THERMOSTAT CABLE, 200 ft. [61 m] MAXIMUM LENGTH. ROUTE INTERCONNECT CABLE AWAY FROM SOURCES OF ELECTRICAL NOISE.
6 DENOTES THERMOSTAT TO SUBBASE INTERCONNECT.
7 APPLICABLE ONLY ON MODEL WITH REMOTE SENSOR. | M1018D |
T8611M
Honeywell Chronotherm Iii Wiring
INSTALLATION
Fig. 8—T8611M Thermostat withEM.HT.-HEAT-OFF-AUTO-COOL system andON-AUTO fan switching; EM.HT., CHECK, and AUX. HT. LEDS. Applied to3-stage heat/2-stage cool system.
Fig. 9—T8611M Thermostat withEM.HT.-HEAT-OFF-AUTO-COOL system andON-AUTO fan switching,
R
HIGH |
LIMIT |
C | ||
FAN | AUX. HEAT | |
SWITCH | EM. HEAT | LED (GRN) MONITOR |
ON | LED (RED) | L |
AUTO | AUXILIARY | |
HEAT RELAY |
SUBBASE
THERMOSTAT
LOGIC/
LOGIC
CONTROL
CIRCUIT
CIRCUIT
SYSTEM
SWITCH
EM. HT.
HEAT
OFF
AUTO
COOL
HEAT 1
W3 | |
HEAT 3 | |
W2 | |
HEAT 2 | EMERGENCY |
HEAT RELAY | |
E | |
FAN RELAY | |
G | |
CHANGEOVER | |
RELAY (COOL) | |
O | |
C.O. | |
CHANGEOVER | |
RELAY (HEAT) | |
B | |
COOL 1 | C.O. |
STAGE 1 COMPRESSOR | |
CONTACTOR | |
Y |
HIGH | COOL 2 |
Y2 | |
LIMIT |
X2 | 2 | ||||||
S1 | S1 | CHECK LED | |||||
S2 | S2 | (YELLOW) | |||||
X1 | |||||||
S3 | S3 | ||||||
202905 REMOTE | |||||||
SENSOR | |||||||
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. | |||||||
2 POSSIBLE CHECK LED CIRCUITS: | |||||||
X2 | TO R | X2 | TO R | X2 | L1 | ||
CHECK | FAULT DETECTION | CHECK | FAULT DETECTION | CHECK | SWITCHING | (HOT) | |
LED | LED | LED | |||||
(YELLOW) | SWITCH | (YELLOW) | SWITCH | (YELLOW) DEVICE | 1 | ||
X1 | 24 Vac | ||||||
X1 | TO C | X1 | TO C | L2 | |||
SWITCH TO R (POWER) SIDE OF | SWITCH TO C (COMMON) SIDE | SWITCH IN SECONDARY OF | |||||
SYSTEM TRANSFORMER | SEPARATE TRANSFORMER | ||||||
OF SYSTEM TRANSFORMER |
3 | SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMINAL. |
4 | NOMINAL 24 Vac POWER MUST BE PRESENT BETWEEN R AND C TERMINALS FOR THERMOSTAT OPERATION. |
5 | RECOMMENDED INTERCONNECT CABLE: |
INTERCONNECT CABLE AWAY FROM SOURCES OF ELECTRICAL NOISE. | |
APPLICABLE ONLY ON MODEL WITH REMOTE SENSOR. | |
DENOTES THERMOSTAT TO SUBBASE INTERCONNECT. |
M1019D
16
T8611M
INSTALLATION
EM.HT. and CHECK LEDs. Applies to 2-stage heat/2-stage cool system in which both heating stages are compressorized.
ADJUSTING CYCLE RATE
To customize the thermostat last heating stage cycling performance to various types of auxiliary heating equipment, a cycle rate adjustment screw is provided on the back of the thermostat to provide optimum savings and occupant comfort.
NOTE: MOST APPLICATIONS WILL NOT REQUIRE A CHANGE IN CYCLE RATE.
The room air temperature normally will vary slightly from the comfort temperature setting with the cycling of the heat pump or auxiliary heater.
Fig. 11—Cycle rate adjustment.
Fig. 12—Battery placement.
The Stage 1 cycle rate of this thermostat is factory-set for heat pumps and cannot be adjusted. The auxiliary heat cycle rate can be adjusted by turning the cycle rate adjustment screw on the back of the thermostat. See Fig. 11. Increasing the cycle rate will reduce room temperature swings when auxiliary heat is being used.
INSTALLING BATTERIES
Three AAA alkaline batteries are included to provide backup to prevent program loss in case of power outage. Install batteries in back of thermostat as shown in Fig. 12.
Without battery backup, the program will remain about 20 seconds in event of power loss.
IMPORTANT: When batteries are first installed, the display will flash 1:00 PM and 32°. After a brief delay, the display will flash 1:00 PM and room temperature.
When the batteries are low, the display will flash REPL BAT. Homeowner will have 20-30 seconds to install new batteries after removing old batteries from back of thermostat. After20-30 seconds, it will be necessary to reprogram. REPL BAT indication will disappear within5-10 minutes when thermostat is remounted on the powered subbase.
IMPORTANT: For proper thermostat operation, always replace dead batteries with new alkaline batteries.
If batteries are completely dead, the display will go blank when the thermostat is removed from subbase. After replacing the batteries, reprogramming will be necessary.
POWER OUTAGES
Backup batteries will hold the programming and keep the display on 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 are not installed. When power is restored, the display will flash 1:00 PM to remind you to reprogram.
MOUNTING THE THERMOSTAT
With systemSET switch set to OFF, hang the thermostat on
PRESENT
the tabs at DAY/TIMEthe top of the subbase (Fig. 13A). Swing down and press on lower edge until thermostat snaps in place (Fig. 13B).DAYOpen cover and tighten the captive mounting screws (Fig. 13C).
BACK
SETTING DAYAHEADAND TIME
Restore 24V power to the thermostat. Set present day and time.
Press | . | |
Press | to set the current day. (Each press of the | |
DAY key advances the display one day.) | ||
Press TIME | or | to set the current time. |
If the display will not come on--
— check mounting of thermostat to subbase. If loose or misaligned, remove thermostat and reinstall on the
17subbase, making sure it is firmly attached68-.0076—1
--check to see that batteries are installed properly.
T8611M
INSTALLATION • CHECKOUT
Fig. 13—Mounting thermostat on subbase.
Checkout
! CAUTION
During cold weather, some heat pumps will require 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 heating equipment. This delay protects the compressor.
Move the system switch to HEAT and the fan switch to AUTO. Press WARMER key until the setting is about 10° F [6° C] above room temperature. Heating should start and the fan should run (there may be a delay of 5-10 minutes before heat turns on). Press COOLER key until the setting is about 10° F [6° C] below room temperature. The heating equipment should shut off, followed by the fan.
NOTE: On an AUTO changeover thermostat, the cooling temperature must be set at least 3° F [2° C] above the heating temperature, or display will flash.
COOLING
! CAUTION
Do not operate cooling if outdoor temperature is below 50° F [10° C]. Refer to manufacturer’s recommendations.
NOTE: When cooling setting is changed, thermostat will wait up to five minutes before turning on the cooling equipment. This delay protects the compressor.
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Move the system switch to COOL and the fan switch to AUTO. Press COOLER key until the setting is about 10° F [6° C] below room temperature. The cooling equipment and fan should start. Press WARMER key until the setting is about 10° F [6° C] above room temperature. The cooling equipment and fan should stop.
NOTE: On an AUTO changeover thermostat, the heating temperature must be set at least 3° F [2° C] below the cooling temperature, or display will flash.
FAN
Move the system switch to OFF, and the fan switch to ON. The fan should run continuously. When the fan switch is in the AUTO position, fan cycles with the heating or cooling system.
INSTALLER SELF-TEST (OPTIONAL)
IMPORTANT:
•Thermostat must have ac power to perform self-test.
•Five-minute time delay on compressor does not function duringself-test.
Perform the following test as a check of all thermostat functions. If thermostat does not respond as indicated, thermostat and subbase must be replaced.
1. Press AHEAD and BACK keys at the same time. While holding keys down, all segments of the display should be on (see Fig. 14).
Fig. 14—All segments on display.
AM REPL | SET | ||
PM BAT | PT | ||
SUN MON | TUE WED THU FRI SAT | TEMPORARY | ROOM |
OUTDOOR | |||
MORNING | MIDDAY EVENING NIGHT | COOL ON HEAT ON | |
M 525A |
2.Set system switch to OFF. Press and release AHEAD, BACK, and PRESENT SETTING keys at the same time to enter self-test.
3.Press each key as listed below, and look for responses listed as key is held down and released. Keys may be pressed in any order except RUN PROGRAM should be pressed last because it ends self-test.
T8611M
CHECKOUT
System | Press | Look For This Response | ||||||||
Switch | This | Key | ||||||||
Position | Key | Down | Key Released | |||||||
OFF | CHANGE | 03 | Blank | |||||||
TO LAST | ||||||||||
PERIOD | ||||||||||
SKIP | 07 | Blank | ||||||||
NEXT | ||||||||||
PERIOD | ||||||||||
PRESENT | 15 | Blank | ||||||||
SETTING | ||||||||||
COOL or | PRESENT | 15 | 1st stage cooling, fan and | |||||||
SETTING | SYSTEM LED on. | |||||||||
AUTO | ||||||||||
(with fan | PRESENT | 15 | 2nd stage cooling also on. | |||||||
in AUTO) | SETTING | |||||||||
PRESENT | 15 | 2nd stage cooling off. | ||||||||
SETTING | ||||||||||
PRESENT | 15 | 1st stage cooling, fan and | ||||||||
SETTING | SYSTEM LED on. | |||||||||
OFF | 06 | Blank | ||||||||
WARMER | ||||||||||
COOLER | 02 | Blank | ||||||||
05 | Blank | |||||||||
AHEAD | ||||||||||
BACK | 04 | Blank | ||||||||
COPY | 01 | Control microprocessor | ||||||||
FROM | mask no. and revision no. | |||||||||
COPY | 00 | Blank | ||||||||
TO | ||||||||||
(CHECK | 12 | See note A . | ||||||||
EACH ) | PERIOD | |||||||||
POSITION) | ||||||||||
OFF | CANCEL | 08 | Blank | |||||||
PERIOD | ||||||||||
13 | Interface microprocessor | |||||||||
mask no. and revision | ||||||||||
DAY | ||||||||||
no. | SET | |||||||||
HEAT/COOL | 09 | Blank | ||||||||
SET | ||||||||||
PRESENT | 14 | Blank | ||||||||
DAY/TIME | ||||||||||
SET | ||||||||||
HEAT or | PRESENT | 14 | 1st stage heating, fan | |||||||
DAY/TIME | ||||||||||
AUTO | SET | and SYSTEM LED on. | ||||||||
(with fan | PRESENT | 14 | 2nd stage heating also on. | |||||||
DAY/TIME | ||||||||||
in auto) | SET | |||||||||
PRESENT | 14 | 3rd stage heating and AUX. | ||||||||
DAY/TIME | ||||||||||
SET | HT. LED also on. | |||||||||
PRESENT | 14 | 3rd stage heating and AUX. | ||||||||
DAY/TIME | ||||||||||
SET | HT. LED off. | |||||||||
PRESENT | 14 | 2nd stage heating also off. | ||||||||
DAY/TIME | ||||||||||
SET | ||||||||||
PRESENT | 14 | 1st stage heating, fan and | ||||||||
DAY/TIME | ||||||||||
HOLD | SYSTEM LED also off. | |||||||||
OFF | TEMP | 10 | Blank | |||||||
RUN | 11 | Normal operating display | ||||||||
PROGRAM |
AHEAT displayed when system switch is in HEAT, COOL when in COOL, HEAT and COOL when in AUTO, neither when in OFF. Also, a four-digit code is displayed. Explanation for each digit is following.
T8611M
CHECKOUT • PROGRAMMING THE THERMOSTAT
First Digit | Degrees | Clock (Hrs.) | Third | System Switch | Sensor |
0 | F | 12 | Digit | Position | Location |
0 | COOL, AUTO or OFF | Local | |||
1 | F | 24 | |||
1 | HEAT or EM.HT. | Local | |||
2 | C | 12 | |||
4 | COOL, AUTO or COOL | Remote | |||
C | 24 | ||||
5 | HEAT or EM. HT. | Remote |
M5346
Second Digit | System Switch Position |
0 | EM. HT., HEAT or OFF |
1 | AUTO |
2 | COOL |
Nominal Cycle Rate | |
Fourth | (cph at 50% load |
Digit | for 3rd stage heat) |
4 | 6 |
5 | 3 |
STEP 1
SETTING THE CURRENT DAY AND TIME
This thermostat can be programmed either on the wall or in the hand. See page 12 to remove the thermostat from the subbase.
Press and release. The display shows 1:00 PM Mon.
Press and hold until the current day appears in the display.
Always press the keys with fingertip or | |||
similar blunt tool. Sharp instruments | AHEAD | ||
like a pen or pencil point can damage | |||
the keyboard. | BACK | ||
NOTE: Check the glossary, page 30, | |||
for definitions of unfamiliar words. | |||
STEP 2 | |||
SETTING THE PROGRAM | |||
PERIOD | |||
TIMES AND TEMPERATURES | |||
FOR ONE DAY | |||
Choose a day to program first. Monday | SET | ||
is used in the examples. Start by pro- | HEAT/COOL | ||
gramming the MORNING time and | |||
temperatures. The thermostat requires | |||
a MORNING program every day. Set | DAY | ||
additional programs as desired. |
Press and hold until the current time ap-
pears in the display. Be sure AM or PM | PM |
TUE | |
appears as desired. | M2703 |
This completes setting the current day and time. Go on to Step 2.
Press and release. Note that the display shows MORNING and the preprogrammed time and temperature.
If the display reads COOL, press and release to switch to HEAT.
Press and hold until MONDAY (or the desired day) appears in the display.
AM | SET |
PT | |
MON | |
MORNING | HEAT |
M2704 | |
AM | SET |
PT | |
MON | |
MORNING | HEAT |
M2704 | |
AM | SET |
PT | |
MON | |
MORNING | HEAT |
M2704
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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.
AM | SET |
PT | |
MON | |
MORNING | HEAT |
M2705 | |
AM | SET |
PT | |
MON | |
MORNING | HEAT |
M2706
Program the MIDDAY time and heat- | |
ing temperature if desired. | PERIOD |
AHEAD | |
BACK |
WARMER
COOLER
NOTE: It is possible to cancel any period showing on the display except MORNING by pushing the CANCEL PERIOD key. To move to the next period while programming, simply press the PERIOD key again.
Program the EVENING time and tem- PERIOD perature, if desired.
AHEAD
BACK
WARMER
COOLER
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 heating temperature must be at least 3 degrees below the air conditioning temperature. For example, if the cooling setting is 75° F, the maximum heating setting is 72° F. To set a higher heating temperature, first raise the cooling setting.
Press and release. The display shows MIDDAY, but no time or temperature.
Press and hold until the display shows the time to start the energy saving period.
Press and hold until the display shows the desired temperature.
Press and release. The display shows EVENING, but no time or temperature.
Press and hold until the display shows the time the temperature should be at the comfort setting.
Press and hold until the display shows the desired heating temperature.
SET | |
PT | |
MON | |
MIDDAY | HEAT |
AM | SET |
PT | |
MON | |
MIDDAY | HEAT |
M2708 | |
AM | SET |
PT | |
MON | |
MIDDAY | HEAT |
M2709
SET | |
PT | |
MON | |
EVENING | HEAT |
PM | SET |
PT | |
MON | |
EVENING | HEAT |
M2711 | |
PM | SET |
PT | |
MON | |
EVENING | HEAT |
M2712
T8611M
PROGRAMMING THE THERMOSTAT
Program the NIGHT time and temperature, if desired.
Set the cooling temperatures for all the periods programmed. The program times are the same for both heating and cooling. Only the cooling temperatures need to be programmed if programming has been completed for heating. If you change program times for cooling, you are also changing the times for
PERIOD
AHEAD
BACK
WARMER
COOLER
SET
HEAT/COOL
WARMER
COOLER
PERIOD
WARMER
COOLER
PERIOD
WARMER
COOLER
PERIOD
WARMER
COOLER
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.
heating.
Press and release. The display shows COOL, the preprogrammed cooling temperature and the programmed start time for NIGHT.
Press and hold until the display shows the desired cooling temperature for NIGHT.
PM | SET |
PT | |
MON | |
NIGHT | HEAT |
M2713 | |
PM | SET |
PT | |
MON | |
NIGHT | HEAT |
M2714 | |
PM | SET |
PT | |
MON | |
NIGHT | HEAT |
M2715 | |
PM | SET |
PT | |
MON | |
NIGHT | COOL |
M2716 | |
PM | SET |
PT | |
MON | |
NIGHT | COOL |
M2717
If the display blinks while holding down TEMPERATURE WARMER or COOLER, the setting limit has been reached. If thermostat can switch automatically between heating and cooling, the heating temperature must be at least 3 degrees F below the air conditioning temperature. For example, if the heating setting is 72° F, the minimum cooling setting is 75° F. To set the cooling temperature lower, first lower the heating setting.
Press and release. The display shows the preprogrammed cooling temperature and the programmed start time for MORNING.
Press and hold until the display shows the desired cooling temperature for MORNING.
Press and release. The display shows the preprogrammed cooling temperature and the programmed start time for MIDDAY.
Press and hold until the display shows the desired cooling temperature for MIDDAY.
Press and release. The display shows the preprogrammed cooling temperature and the programmed start time for EVENING.
Press and hold until the display shows the desired cooling temperature for EVENING.
22
This completes the program schedule for one day. Go to Step 3 to copy this program
AM | SET |
PT | |
MON | |
MORNING | COOL |
M2718 | |
AM | SET |
PT | |
MON | |
MORNING | COOL |
M2719 | |
AM | SET |
PT | |
MON | |
MIDDAY | COOL |
M2720 | |
AM | SET |
PT | |
MON | |
MIDDAY | COOL |
M2721 | |
PM | SET |
PT | |
MON | ROOM |
EVENING | COOL |
M2722 | |
PM | SET |
PT | |
MON | ROOM |
EVENING | COOL |
M2723
STEP 3
COPYING THE PROGRAM TO THE DESIRED DAYS
It is possible to copy the program for one day to any other day or combination of days. The new program will replace any program already set in the day selected.
STEP 4
SETTING THE SCHEDULES AND TEMPERATURES FOR THE REMAINING DAYS
Use the procedures described in Steps 2 and 3 and summarized in this step toDAY program the remaining days.
SET
HEAT/COOL
AHEAD
BACK
PERIOD
If necessary, press and release to enter the programming mode.
Press and hold until the day containing the program to be copied shows in the display.
Press and release. The day to be copied will show, and the next day will flash, in the display.
Press and release to copy the program into the day that is flashing in the display. Note that the next day now starts to flash.
Press and release if it is not desired to copy into the day that is flashing. Note that the next day now starts to flash.
Press and release the COPY TO key again to select the day that is flashing, or the DAY key to bypass it.
Continue until all desired days are showing in the display and are not flashing.
If an error is made in copying, start over by pressing COPY TO key repeatedly until all days are shown (not flashing); press COPY TO key once more.
Press and release to copy the program into all the days selected.
Press and release to enter the programming mode.
Press and hold until the day desired to program shows on the display.
If COOL shows on the display, press and release to switch to HEAT.
Use the AHEAD/BACK keys to set the time and the WARMER/COOLER keys to set the heating temperature.
Press and release the PERIOD key to step through the remaining time periods. Use the AHEAD/BACK keys to set the time and the WARMER/COOLER keys to set the heating temperature for each time period.
MON TUE
M2725
MON TUE WED
M2726
MON WED
M2727
MON | WED THU |
M2728
PM
TUE
MIDDAY
M2729
AM | SET |
PT | |
TUE | |
MIDDAY | HEAT |
M2730 | |
SET | |
PT | |
FRI | |
MIDDAY | HEAT |
M2731 | |
SET | |
PT | |
FRI | |
MIDDAY | HEAT |
M2731
WARMER
COOLER
AHEAD WARMER
BACK COOLER
T8611M
PROGRAMMING THE THERMOSTAT
SET
HEAT/COOL
PERIOD
COPY
FROM
COPY
TO
DAY
COPY
TO
RUN
PROGRAM
STEP 5
SETTING THE SYSTEM AND
FAN SWITCHES ON THE
SUBBASE.
Depending on thermostat model, some of the switch positions shown may not be available. Note the positions provided on subbase, then set the switch(es) as desired.
First set the fan switch.
Then set the system switch.
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 mode. The next day flashes on the display.
Press and release the COPY TO key to select the day that is flashing, or the DAY key to bypass it.
Continue, using the COPY TO key to bring up the next day, followed by COPY TO to select, or DAY to bypass the DAY, until all desired days are selected.
Press and release RUN PROGRAM to complete the copy.
Repeat Step 4 as needed until all days are programmed.
FAN ON: The fan runs continuously. Use for improved air circulation during special occasions or for more efficient electronic air cleaning.
FAN AUTO: Normal setting for most homes and businesses. The fan starts and stops with the compressor in heat pump systems when the system switch is set to HEAT, AUTO or COOL. When system switch is set to EM. HT., the fan operates with the auxiliary heat (on some models).
EM. HT: The thermostat controls only the backup heat. The heat pump is off.
AM | SET |
PT | |
FRI | |
MORNING | COOL |
M2732
WARMER
COOLER
FRI | SAT |
M2733 | |
SUN | FRI |
M2734
COPY
TO
DAY
PM
TUE
MIDDAY
M2735
FAN
ON AUTO
M2757
FAN
ON AUTO
M2758
EM. HT. HEAT OFF AUTO COOL
M2752
HEAT: The thermostat controls the heat-
ing system.
EM. HT. HEAT OFF AUTO COOL
M2753
OFF: Both the heating and cooling systems are off.
EM. HT. HEAT OFF AUTO COOL
M2754
Then set the system switch. (continued)
Now, read on to learn about the operating flexibility that makes this thermostat THE SMART CHOICE.
T8611M
PROGRAMMING THE THERMOSTAT • OPERATING THE THERMOSTAT
AUTO (select models only): The thermostat controls either the heating or cooling system, depending on room temperature.
COOL: The thermostat controls the cooling system.
This completes the programming of the thermostat.
If thermostat was removed from the wall to program, replace it following the procedure on page 20.
EM. HT. HEAT OFF AUTO COOL
M2755
EM. HT. HEAT OFF AUTO COOL
M2756
Operating The Thermostat
TEMPORARILY CHANGING
THE PROGRAM
These features allow customizing the program for those times when someone comes home early, is working late or planning to be out for the evening.
Changes made with these keys are active for one program period and then are canceled.
To keep the current temperature through the next program period:
Press and release. The name of the period to be skipped will flash in the display until the start time of the skipped period. During the skipped period, the display will flash “temporary” to show that the programmed temperature for this period is not being used.
To go back to the temperature of the | CHANGE | Press and release. The display will show |
previous program period: | the name of the previous period and flash | |
TO LAST | ||
PERIOD | “temporary” until the next regularly | |
scheduled period starts. |
IMPORTANT: The CHANGE feature will be operable the day after the thermostat has been programmed and operating. The thermostat requires this time to learn the programmed schedule.
To temporarily raise or lower the temperature for the current period only:
To change back:
Press and hold until the desired temperature is reached. The display will flash “tem-porary” until the next programmed time period starts.
Press and release to cancel any of the temporary settings.
PM | SET |
PT |
TUE
MIDDAY EVENING
M2736
PM | SET |
PT | |
TUE | TEMPORARY |
MORNING
M2737
SET
PT
TEMPORARY
HEAT
M2738
PM
TUE
MIDDAY
M2739
T8611M
OPERATING THE THERMOSTAT
REPROGRAMMING THE | |||
THERMOSTAT | |||
PERIOD | |||
If schedule changes or a different tem- | |||
perature is desired, update any setting | DAY | ||
without affecting the rest of the pro- | |||
gram. | |||
AHEAD | |||
BACK | |||
Copy the new program into other days, | COPY | ||
FROM | |||
if desired. When copying a program, all | |||
the times and temperatures for that day | |||
RUN | |||
PROGRAM | |||
HOLDING A TEMPERATURE | HOLD | ||
TEMP | |||
FOR EXTENDED ABSENCE | |||
This feature is particularly useful when | WARMER | ||
going on vacation or other extended | |||
absence. It does not cancel the pro- | COOLER | ||
PRESENT | |||
SETTING | |||
RUN | |||
PROGRAM | |||
Press and release to cancel manual con- | |||
trol. | |||
PERIOD | |||
CANCELING PROGRAM | |||
SETTINGS | |||
The thermostat requires time and tem- | |||
perature settings in the MORNING time | DAY | ||
period for each day, but any of the |
Both the heating and cooling temperatures will be canceled.
Use the copy function to cancel the program from other days, but remem-
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 display shows the desired new program.
are copied.
Press and release. The next day will flash on the display. Press COPY TO to copy into, or DAY to bypass, the day. Continue until the program has been copied into all desired days.
Press and release to return to normal operation.
gram.
Press and release.
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.
others can be canceled. Each time period for each day must be canceled separately.
Press and hold until the desired time period shows on the display.
Press and hold until the desired day shows on the display.
Press and release to cancel the time and temperature settings for that time period. ber: all the programs will be copied, not just the cancellation.
WARMER
COOLER
COPY
TO
DAY
SET
PT
HEAT
M2740
SET
PT
HEAT
M2741
SET
PT
HEAT
M2742
PM
TUE
MIDDAY
M2743
PM | SET |
PT | |
MON | |
NIGHT | HEAT |
M2744 | |
PM | SET |
PT | |
WED | |
NIGHT | HEAT |
M2745 | |
SET | |
PT | |
WED | |
NIGHT | HEAT |
M2746 | |
PM | |
WED | |
EVENING | HEAT |
M2747
Press and release to return to normal operation.
CHECKING THE PROGRAM TIMES AND TEMPERATURES
If desired, check all the stored settings
tion.
CHECKING THE CURRENT TEMPERATURE SETTING
Press a single key to compare actual room temperature to the setting at any
without affecting the permanent program.
Press and hold until the desired period shows on the display. The start time and temperature setting will appear on the display.
Press and release to display the next day time and temperature for that period.
Press and release to return to normal opera-
time.
Press and release. The display will show the current temperature setting for several seconds, then revert to the room temperature.
PM | SET |
PT | |
FRI | |
NIGHT | HEAT |
M2748 | |
PM | SET |
PT | |
SAT | |
NIGHT | HEAT |
M2749 | |
PM | SET |
PT | |
FRI | |
EVENING | |
M2750 | |
SET | |
PT | |
HEAT |
M2751
During recovery from energy savings, the setting displayed will not match the programmed setting. This is because the thermostat gradually changes the temperature setting during recovery to provide maxi-
mum comfort combined with most efficient use of the heating or cooling equipOperation- ment.
The T8611M Thermostat provides automatic control of multistage heat pump systems with up to three stages of heat and up to two stages of cool. The first heat stage is the heat pump and the last stage is electric, gas, or oil auxiliary heat. T8611M provides automatic changeover from heat to cool or cool to heat.
ADAPTIVE INTELLIGENT RECOVERY™ OPERATION
Adaptive Intelligent Recovery™ is the Honeywell trademark for the way the T8611 controls the heating and cooling equipment during recovery from an energy savings setting to a comfort setting. During recovery, the control point changes gradually rather than jumping from the energy savings setting to the comfort setting all at once. This provides additional energy savings.
When Adaptive Intelligent Recovery™ is used in the heating mode, the control point raises gradually, maximizing the use of the more economical heat pump to bring the sensed temperature to the desired comfort setpoint. This minimizes the use of the typically more expensive auxiliary heat.
In both heating and cooling, the thermostat monitors recovery each day and adjusts the next day recovery start time. This ensures that the building is at the desired temperature at the programmed time, regardless of the outdoor temperature. Recovery time varies depending on
the weather conditions and the building heating/cooling system.
The advantages are:
•The comfort setting is achieved at the programmed time and maintained regardless of weather conditions; occupants come home and wake up to comfort.
•Drafts from low temperature discharge air are minimized during occupied periods.
•The thermostat automatically uses the more economical heat pump as the primary heat source during heat mode recovery, avoiding the use of the expensive auxiliary heat.
•Comfort and energy savings can be achieved in both heating and cooling.
•Reduces heat pump compressor cycling, extending equipment life.
Use of Outdoor Thermostats
Because Adaptive Intelligent Recovery™ calls for auxiliary heat only when it is truly needed, it eliminates the need for outdoor thermostat(s). If an outdoor thermostat is used with T8611 and it is set close to the balance point, the recovery time from energy savings will be prolonged because the outdoor thermostat will prevent operation of
T8611M
OPERATION
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 during recovery from energy savings. It is bypassed when the setpoint is changed, and when the CHANGE TO LAST PERIOD, SKIP NEXT PERIOD or HOLD TEMP key is pressed. If Adaptive Intelligent Recovery™ is bypassed, the system operates the stages of equipment like a conventional thermostat.
WHAT TO EXPECT DURING RECOVERY FROM ENERGY SAVINGS IN HEATING
The T8611 controls the heating equipment based on the indoor sensed temperature, which is a combination of air temperature and wall temperature.
In Mild Weather
When the outdoor temperature is mild, say 50°F [10° C], the recovery from energy savings will be handled completely by the heat pump, without using the more costly auxiliary heat. The heat pump starts only after the control point has risen above the sensed temperature and is locked on until the comfort setpoint is reached. During the comfort period, the heat pump will cycle on and off as needed to maintain the sensed temperature within +/-1° F of the setpoint. During energy savings periods, the T8611 will call the heat pump on only if the sensed temperature falls below the control point.
In Moderate Weather
When outdoor temperature is below the balance point of the heat pump, the heat pump will run continuously during the recovery period and the auxiliary heat will cycle as necessary. During the comfort period, the heat pump runs continuously and auxiliary heat cycles until the next energy savings period begins. During energy savings, the heat pump cycles on only when the sensed temperature falls below the control point. Under these conditions, auxiliary heat is typically not needed during the energy savings period.
In Severe Weather
When the outdoor temperature is severe, say 0° F [-18° C], the heat pump is on continuously and auxiliary heat
cycles even during the energy savings period. When recovery from energy savings begins, the heat pump will stay on and auxiliary heat will cycle. During recovery, the auxiliary heat ON times will be long, and the OFF times will be short. The ON times will shorten as the control point approaches the comfort setpoint. During the comfort period, the heat pump is on continuously and auxiliary heat cycles until the next energy savings period. When energy saving begins, the heat pump cycles off until the sensed temperature falls below the control point. Although the heat pump comes on when the sensed temperature falls below the control point, the sensed temperature may lag 2° or 3° F below the control point because of the time required to warm up the walls and furniture. Auxiliary heat will cycle as necessary during the energy savings period.
THERMAL PERFORMANCE WITH T8611
During severe weather, the T8611 actually controls closer to the setpoint than a conventional thermostat. This is because the heat anticipator is replaced by two electronic control strategies—cycling by heat anticipation and proportional plus integral control.
Electronic cycling by heat anticipation acts like a traditional heat anticipator, except that never needs adjustment for various control circuit load currents. It cycles the heat pump off slightly before the room temperature reaches the setpoint to keep heat remaining in the ductwork from overheating the room.
In severe weather, a conventional thermostat with a heat anticipator tends to turn off the thermostat too soon, so the effective control point is somewhat below the setpoint. In very cold weather, the difference between setpoint and effective control point may be 5° or 6° F [2° or 3° C] with a conventional thermostat. This phenomenon is called droop.
Proportional plus integral action eliminates droop by adjusting the on-time of the stage that is cycling longer or shorter until the control point matches the setpoint. The T8611 controls space temperature within one degree of setpoint, when the temperature has stabilized after an energy savings period.
This zero droop performance of the T8611 provides improved occupant comfort and energy savings. Occupants do not need to continually adjust thermostat setting to maintain desired temperature, even during severe weather.
A minimum-off timer in the T8611 ensures that the compressor will not come on again for at least five minutes after it turns off. Theminimum-off timer is triggered when the compressor goes off, or when the system switch is moved. If the compressor turns off when the setpoint is changed or the CHANGE TO LAST PERIOD key is pressed, then theminimum-off timer is triggered. Theminimum-off timer operates during the first stage of both heating and cooling.
T8611M
TROUBLESHOOTING
Troubleshooting
Start the system by setting the thermostat and observing system response. If problem occurs, establish symptom and use the following troubleshooting chart to check for possible cause and action.
S YMPTOM
HEAT PUMP OR AUXILIARY HEAT WON'T OPERATE
PARTIAL DISPLAY
NO DISPLAY
PRESENT SETTING APPEARS INACCURATE
ROOM TEMPERATURE DISPLAY APPEARS INACCURATE
ROOM TEMPERATURE IS NOT WHAT IS EXPECTED ON WEEKENDS
THERMOSTAT TEMPERATURE NEEDS TO BE ADJUSTED ON A REGULAR BASIS
PROGRAM IS LOST DUE TO POWER OUTAGE OR DISPLAY GOES BLANK WHEN POWER IS TURNED OFF
DISPLAY FLASHES WHILE
PROGRAMMING
DISPLAY FLASHES DURING OPERATION
POS S IBLE C AU S E | AC TION |
NO ac POWER TO THERMOSTAT | CHECK POWER TO HEAT PUMP OR |
AUXILIARY HEATING SYSTEM | |
THERMOSTAT INOPERATIVE
PRESENT SETTING TOO LOW/HIGH
SYSTEM SWITCH ON THERMOSTAT IN WRONG POSITION
INCORRECT WIRING
HEAT PUMP OR AUXILIARY HEAT SYSTEM INOPERATIVE
INOPERATIVE THERMOSTAT
NO POWER TO THERMOSTAT
THERMOSTAT IN SELF-TEST MODE
THERMOSTAT MOUNTED INCORRECTLY ON BASE
THERMOSTAT IS IN RECOVERY MODE
THERMOSTAT HAS SEPARATE REMOTEMOUNTED SENSOR
THERMOSTAT NOT PROGRAMMED FOR WEEKENDS
WARMER/COOLER KEYS BEING USED TO ADJUST TEMPERATURE
BATTERIES ARE INCORRECTLY INSTALLED
BATTERIES ARE DEAD
IMPROPER PROGRAM SEQUENCE
AUTOMATIC CHANGEOVER THERMOSTAT HEATING OR COOLING TEMPERATURES CAN NOT BE SET CLOSER THAN 3°F
PROGRAMMING HAS BEEN LOST BECAUSE OF A POWER OUTAGE
CONDUCT SELF-TEST; SEE CHECKOUT.
ADJUST TEMPERATURE BY PUSHING WARMER/COOLER KEYS.
RESET THERMOSTAT SYSTEM SWITCH.
WAIT 5-10 MIN. OR USESELF-TEST IN THERMOSTAT. SEE CHECKOUT.
CHECK CIRCUIT DIAGRAM.
CONSULT HEAT PUMP/AUXILIARY HEAT SYSTEM INSTRUCTIONS.
REPLACE THERMOSTAT.
CHECK THAT HEAT OR COOL SYSTEM POWER IS ON.
PRESS RUN PROGRAM KEY TWICE.
SEE INSTALLATION INSTRUCTIONS FOR CORRECT MOUNTING.
•NORMAL OPERATION THERMOSTAT TURNS ON HEATING/COOLING EARLY TO MEET TEMPERATURE SETTING AT PROGRAMMED TIMES.
•RECOVERY CAN BE ENDED BY PUSHING WARMER/COOLER KEYS.
•THERMOSTAT IS CONTROLLED BY TEMPERATURE SENSED AT REMOTE SENSOR LOCATION.
•CHECK TEMPERATURE AT REMOTE SENSOR LOCATION.
Honeywell Chronotherm Iii Manual Pdf Software
•MAKE SURE WIRING FROM THERMOSTAT LOCATION TO REMOTE SENSOR LOCATION IS IN GOOD CONDITION.
REPROGRAM FOR WEEKENDS PER INSTRUCTIONS.
REPROGRAM THERMOSTAT TO MAKE PERMANENT CHANGE IN PROGRAM. WARMER/ COOLER KEYS ARE TEMPORARY UNLESS PERIOD KEY IS PRESSED FIRST.
REMOVE AND REPLACE PER MARKINGS ON THERMOSTAT.
REPLACE BATTERIES.
CHECK HOMEOWNERS MANUAL FOR CORRECT PROGRAM SEQUENCE.
SET HEATING AND COOLING TEMPERATURES 3°F OR MORE APART.
REPROGRAM ACCORDING TO PROGRAMMING INSTRUCTIONS (MAKE SURE BATTERIES ARE INSTALLED).
29 |
T8611M
GLOSSARY
Glossary
AUX. HT. light (green)
This light glows whenever the thermostat is calling for operation of the backup heater. Backup (auxiliary) heat is more expensive to operate than the heat pump, and typically is used only when the heat pump is unable to handle the load (located on subbase).
CHECK light (yellow)
Consult heat pump literature to determine its meaning (located on subbase).
Comfort temperature
The temperature desired when active and occupying the building.
EM. HT. light (red)
This light glows whenever the thermostat system switch is in the EM. HT. position (located on subbase). On some systems, it may also indicate the need to switch to EM. HT. because of a heat pump problem.
The lower (heating) or higher (cooling) temperature that allows savings on heating and cooling costs when asleep or away. Also called the setback (heating) or setup (cooling) temperature.
Preprogrammed schedule
This is the schedule programmed into the thermostat at the factory. It sets a night program that provides energy savings if owner does not set his/her own program, or if personal program is lost for any reason. The program, which is the same for all days of the week, is:
Start | Temperature | ||||
Period | Time | Heating | Cooling | ||
MORNING | 6:00 AM | 70° F | 78° F | ||
MIDDAY | - - - - - | program - | - | - | - - - - - - - |
EVENING | - - - - - | program - | - | - | - - - - - - - |
NIGHT | 10:00 PM | 60° F | 78° F |
Program
The times and temperatures the owner sets to define the comfort and energy saving periods for each day’s schedule.
Recovery
The time when the thermostat operates the heating or air
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 temperature is the energy savings temperature.
Setup
Raising the temperature in the building for a set period in cooling for energy savings. The higher temperature is the energy savings temperature.
Setpoint
The thermostat temperature setting the owner selects. The thermostat turns the heating or cooling equipment on and off to maintain this temperature at the thermostat location until another temperature setting (setpoint) goes into effect.
SYSTEM light (yellow)
This light glows whenever the thermostat is calling for heating or cooling (located on thermostat).
Time period
One of four program periods: MORNING, MIDDAY, EVENING, and NIGHT; available with the Chronotherm III™ Thermostat. One period begins when the previous program period ends.
T8611M | |
TABLE OF CONTENTS | |
Table of Contents | |
Page | |
Specifications .................................................................................. | 2 |
Ordering Information ........................................................................... | 2 |
Selection/Application ............................................................................ | 5 |
Installation ................................................................................... | 12 |
Compatibility ............................................................................... | 12 |
Location ................................................................................... | 12 |
Mounting Subbase ........................................................................... | 12 |
Mounting Remote Temperature Sensor ......................................................... | 13 |
Wiring ..................................................................................... | 13 |
Adjusting Cycle Rate ........................................................................ | 17 |
Installing Batteries .......................................................................... | 17 |
Power Outages .............................................................................. | 17 |
Mounting the Thermostat ..................................................................... | 17 |
Setting Day and Time ........................................................................ | 17 |
Checkout ..................................................................................... | 18 |
Heating .................................................................................... | 18 |
Cooling .................................................................................... | 18 |
Fan ........................................................................................ | 19 |
Installer | 19 |
Programming The Thermostat ................................................................... | 20 |
Setting the Current Day and Time ............................................................. | 20 |
Setting the Program Times and Temperatures for One Day ........................................ | 20 |
Copying the Program to the Desired Days ....................................................... | 23 |
Setting the Schedules and Temperatures For the Remaining Days ................................... | 23 |
Setting the System and Fan Switches on the Subbase .............................................. | 24 |
Operating The Thermostat ...................................................................... | 25 |
Temporarily Changing the Program ............................................................ | 25 |
Reprogramming the Thermostat ............................................................... | 26 |
Holding a Temperature for Extended Absence ................................................... | 26 |
Canceling Program Settings ................................................................... | 26 |
Checking the Program Times and Temperatures ................................................. | 27 |
Checking the Current Temperature Setting ..................................................... | 27 |
Operation .................................................................................... | 27 |
Adaptive Intelligent Recovery™ Operation ............................................ | .......... 27 |
What To Expect During Recovery From Energy Savings Heating ................................... | 28 |
Thermal Performance With T8611 ............................................................. | 28 |
28 | |
Troubleshooting ............................................................................... | 29 |
Glossary ...................................................................................... | 30 |
Home and Building Control | Home and Building Control | Helping You Control Your World | |
Honeywell Inc. | Honeywell | ||
1985 Douglas Drive North | 740 Ellesmere Road | ||
Golden Valley, MN 55422 | Scarborough, Ontario | ||
M1P 2V9 | QUALITY IS | ||
KEY |
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