heat pump thermostat - controlscentral pump thermostat cross... · select a honeywell heat pump...
Post on 17-Jul-2020
22 Views
Preview:
TRANSCRIPT
Heat PumpThermostat
&Cross Reference Selection Guide
Select a Honeywell Heat Pump Thermostatfor Peak Performance that Meets Every Heat Pump DemandRapid advances in heat pump technology, resulting in high efficiency units and lower operating costs, have made the heat pump a popular choicewith consumers. Honeywell heat pump thermostats are ideal for all your heat pump applications and provide the highest level of comfortavailable. Our thermostats offer consistent control. They optimize desired comfort level and energy savings. Because your customers’ needs vary,we’ve developed the most complete line of heat pump thermostats.
T841 Standard Non-Programmable Thermostat• Good performance without any
“frills”.• Electromechanical.• Two heat/one cool; manual
changeover.• Single-piece construction–no
subbase required.• Front test probe access for easy
checkout.
Y594 Deluxe Non-Programmable Thermostat• Proven reliability with excellent
temperature control.• Electromechanical.• Classic styling.• Two heat/one cool; automatic or
manual changeover.• Two-piece, front-wired construc-
tion for easy installation.
T8411 Standard Electronic Non-ProgrammableThermostat• Microelectronic technology
provides precise zero-droopperformance.
• Attractive styling complementsany décor.
• Two heat/one cool; manualchangeover eliminatesunexpected system operation.
• Large digital display for quick,easy readability.
• Fan and system switches are located on the lower edge of thethermostat to eliminate accidental setting changes.
T8511 Deluxe Electronic Non-ProgrammableThermostat• Microelectronic technology
provides precise zero-droopperformance.
• Attractive styling complementsany décor.
• Two heat/one cool; automatic ormanual changeover.
• Easy-to-read backlit display.• Most frequently used keys are
located by LCD for quick and easy access to information.• Outdoor temperature display available with optional outdoor
temperature sensor.
PROGRAMMABLE HEAT PUMP THERMOSTATS
T8611 Chronotherm® IV Deluxe ProgrammableThermostat• Microelectronic technology
provides precise zero-droopperformance.
• Attractive styling complementsany décor.
• Two heat/one cool; automaticor manual changeover.
• Seven-day programming.• COPY key makes program-
ming easier for the installer and the homeowner.• Easy-to-read backlit display.• Adaptive Intelligent Recovery™ optimizes heat pump energy savings.• Outdoor temperature display available with optional outdoor
temperature sensor.
T8011 Standard Programmable Thermostat• Microelectronic technology
provides precise zero-droopperformance.
• Attractive styling complementsany décor.
• Two heat/one cool; manualchangeover.
• Program up to four time periodsand temperature setpoints.
• Large temperature display forquick, easy readability.
• Conveniently sized thermostat with two-piece installation make it easyto install and troubleshoot.
PC8900/W8900B1002 Perfect Climate Comfort Center™ Control System• Automated, all-in-one comfort control.• PC8900 Control Panel mounts in living space and accurately measures and
controls room temperature and humidity. W8900 Remote Panel mounts nearthe heating and cooling equipment.
• Optional remote sensors can be used for optimum temperature control.• Up to three heat/two cool.• Seven-day (auto copy) programming.• Large, continuously lit display.• Simultaneous display of heat and cool setpoints with push of a button.• Circulation fan setting improves indoor air quality.
NON-PROGRAMMABLE HEAT PUMP THERMOSTATS
70-6627 • 1
Table of Contents
About This Cross Reference/Selection Guide ........................................................................................................................ 1
Heat Pump Thermostat Model Specifications ......................................................................................................................... 2-4
Thermostat Descriptions and General Information ................................................................................................................. 5-12
Understanding Circuits ............................................................................................................................................................ 13-14
Typical System Hookup Diagrams .......................................................................................................................................... 15-25
Electronic Thermostat (T8011, T8411, T8511, T8611) Sequences of Operation ................................................................... 26-28
Thermostat Manufacturer Cross Reference ............................................................................................................................ 29-32
Tips for Using This Heat Pump Cross Reference ................................................................................................................... 33
Wiring Connections for Honeywell Heat Pump Thermostats .................................................................................................. 34-35
Manufacturer Cross Reference ............................................................................................................................................... 36-116
Index ....................................................................................................................................................................................... 117-118
Index to Figure Diagrams ........................................................................................................................................................ 119
About This Cross Reference/Selection GuideHeat pumps require thermostats with special features. This Cross Reference/Selection Guide contains information aboutall aspects of selecting a Honeywell replacement thermostat for any heat pump application. Table 1 shows a list of theHoneywell TRADELINE® and SUPER TRADELINE® OS numbers and their specifications. Immediately following thetable are more detailed descriptions and related application information. In this section you will find additionalinformation explaining features and requirements that are unique to heat pump thermostat applications. Following thegeneral information section are the internal schematics, wiring diagrams, and sequence of operation information for theelectronic thermostats. The Thermostat Manufacturer Cross Reference is listed next. Finally, there is the heat pumpmanufacturer cross reference, including tips on how to use it. This cross reference, which is organized alphabetically byequipment or thermostat manufacturer, provides the needed information to select and wire any Honeywell heat pumpthermostat in new installations and replacement applications.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 2
Heat Pump Thermostat Model SpecificationsTable 1. Model Number Specifications.
(continued)
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Order Stages Systems Led Number Description Terminals Heat Cool Switch Changeover Indication
T841A1308 TRADELINE®; fixed anticipation. Foruse where E and W2 may be jumpered.No auto fan in EM.HT. (Fig. 16).
W2,Y,G,R,O,B,L,E,X
2 1 EM.HT.-HEAT-OFF-
COOL
Manual heator cool
EM.HT.d,AUX.HT.
T841A1555 Replaces T841A1068 and T841A1407,T841A1530, GE AY28Y078 andAY28Y139. Includes outdoor reset andfixed anticipation on stage 2 heat. Autofan in EM. HT. (Fig. 17).
W,Y,G,R,O,B,X2,T,F,U
2 1 EM.HT.-HEAT-OFF-
COOL
Manual cool EM.HT.,AUX. HT.
T841A1712 SUPER TRADELINE®; for two-stageheating and one-stage cooling. Fixedanticipation except Stage 2, which isadjustable. Auto fan in EM. HT. (Fig. 18).
W2,W3,Y,G,B,O,R,X,E
2 1 EM.HT.-HEAT-OFF-
COOL
Manual heator cool
EM.HT.,AUX. HT.
T841A1738 Same as T841A1712, except PremierWhite™. SUPER TRADELINE®; for two-stage heating and one-stagecooling. Fixed anticipation except Stage 2, which is adjustable. Auto fan in EM. HT. (Fig. 18).
W2,W3,Y,G,B,O,R,X,E
2 1 EM.HT.-HEAT-OFF-
COOL
Manual heator cool
EM.HT.,AUX. HT.
T841B1000 For “No Emergency Heat” applications.Fixed anticipation except stage 2, whichis adjustable. (Fig. 19).
W1,W2,Y1,G,R,O,B,X
2 1 HEAT-OFF-COOL
Manual heator cool
None
Y594G1161 Includes T874G1204/Q674J1043. Withoutdoor reset; replaces GE AY28X077and AY28X138; no stage 2 heatanticipation. No auto fan in EM. HT. (Fig. 20).
W,Y,G,R,O,X2,T,F,B
2 1 EM.HT.-AUTO-OFF
Auto cool AUX.HT.,EM.HT.
Y594G1419 SUPER TRADELINE®; includesT874G1642/Q674F1444. Auto fan inEM. HT. (Fig. 22).
W1,W2,W3,Y1,G,R,O,B,E,X,X1,X2
2 1 OFF-EM.HT.HEAT-AUTO-COOL
Auto heator cool
EM.HT.,AUX.HT.CHECKc
Y594G1476 Same as Y594G1419, except PremierWhite™; SUPER TRADELINE®.Includes T874G1741/Q674F1477. Autofan in EM. HT. (Fig. 22).
W1,W2,W3,Y1,G,R,O,B,E,X,X1,X2
2 1 OFF-EM.HT.HEAT-AUTO-COOL
Auto heator cool
EM.HT., AUX.HT.CHECKc
Y594G1633 TRADELINE®; includes T874G1972/Q674F1584. No auto fan in EM.HT.Replaces Coleman/Evcon Y594G1377(Fig. 21).
W2,Y,G,R,O,B,E,X,L
2 1 OFF-EM.HT.HEAT-AUTO-COOL
Auto heator cool
EM.HT.,AUX.HT.
Y594R1425 SUPER TRADELINE®; includesT874R1616/Q674L1587. Fixedanticipation. Auto fan in EM. HT. (Fig. 25).
W1,W2,W3,G,Y,R,O,B,E,X,X2,L
2 1 EM. HT.-HEAT-OFF-
COOL
Manual heator cool
AUX. HT.,EM. HT.,CHECKc
70-6627 • 3
Table 1. Model Number Specifications (continued).
(continued)
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Order Stages Systems Led Number Description Terminals Heat Cool Switch Changeover Indication
Y594R1763 TRADELINE®; includesT874R1954/Q674L1827. ReplacesY594R1136. Auto fan in EM.HT. (Fig. 23).
W,Y,G,R,O,B,X2,T,F,U
2 1 EM.HT.-HEAT-OFF-
COOLAUX.HT.
Manual cool EM.HT.,AUX.HT.
Y594R1797 Includes T874R1988/Q674L1868.Replaces Coleman/Evcon Y594R1235.No auto fan in EM.HT. (Fig. 24).
W2,Y,G,R,O,B,X,E,L
2 1 EM.HT.-HEAT-OFF-
COOL
Manual cool EM.HT.,AUX.HT.
T8611G1004 TRADELINE®; 5-1-1 programming. Auto fan in EM.HT. (Fig. 26).
W2,Y,G,R,C,O,B,E,X1,
X2,L
2 1 EM.HT.-HEAT-OFF-
AUTO-COOL
Automatica EM.HT., AUX. HT.,CHECKc
SYSTEMb
T8611G1103 Same as T8611G1004, except PremierWhite™; TRADELINE®. 5-1-1programming. Auto fan in EM.HT. (Fig. 26).
W2,Y,G,R,C,O,B,E,X1,
X2,L
2 1 EM.HT.-HEAT-OFF-
AUTO-COOL
Automatica EM.HT.,AUX.HT.,CHECKc
SYSTEMb
T8611M7008 TRADELINE®; 7 day programming. Auto fan in EM.HT. (Fig. 27).
W2,W3,Y,Y2,G,R,C,O,B,E,X1,X2,L
3 2 EM.HT.-HEAT-OFF-
AUTO-COOL
Automatica EM.HT.,AUX.HT.,CHECKc
SYSTEMb
T8611R1000 TRADELINE®; 5-1-1 programming. Auto fan in EM.HT. (Fig. 28).
W1,W2,Y1,G,R,C,O,B,
E,L,P
2 1 EM.HT.-HEAT-OFF-
COOL
Manual EM.HT.d,AUX.HT.
SYSTEMb
T8411R1002 TRADELINE®; non-programmableelectronic thermostat. Auto fan inEM.HT. (Fig. 29).
W1,W2,Y,G,R,C,L,E,O,B
2 1 EM.-HT.-HEAT-OFF-
COOL
Manual None
T8411R1028 Same as T8411R1002 except PremierWhite™. Auto fan in EM.HT. (Fig. 29).
W1,W2,Y,G,R,C,L,E,O,B
2 1 EM.-HT.-HEAT-OFF-
COOL
Manual None
T8511G1021 TRADELINE®; Deluxe ElectronicThermostat. Outdoor sensor capability. Auto fan in EM.HT. (Fig. 30).
R,C,Y1,W1,W2,O/B,G,E,L,OT,OT
2 1 EM.-HT.-HEAT-OFF-
AUTO-COOL
Automatica CHECKc
T8511G1047 Same as T8511G1021 except PremierWhite™. Outdoor sensor capability. Auto fan in EM.HT. (Fig. 30).
R,C,Y1,W1,W2,O/B,G,E,L,OT,OT
2 1 EM.-HT.-HEAT-OFF-
AUTO-COOL
Automatica CHECKc
T8511M1002 TRADELINE®; Deluxe ElectronicThermostat. Outdoor sensor capability.Auto fan in EM.HT.
R,C,Y1,Y2,W2,W3,O/B,G,E,L,OT,OT
3 2 EM.-HT.-HEAT-OFF-
AUTO-COOL
Automatica CHECKc
T8011R1006 Same as T8011R1014 except PremierWhite™. Fixed anticipation except stage2, which is selectable. (Fig. 29).
R,C,G,W1,W2,Y,O,
B,E,L
2 1 EM.-HT.-HEAT-OFF-
COOL
Manual None
T8011R1014 TRADELINE®; program up to four timeperiods and temperatures. Fixedanticipation except stage 2, which isselectable. (Fig. 29).
R,C,G,W1,W2,Y,O,
B,E,L
2 1 EM.-HT.-HEAT-OFF-
COOL
Manual None
70-6627 • 4
Table 1. Model Number Specifications (continued).
a In freezing climates, be sure the cooling compressor has adequate cold start protection.b SYSTEM LED lights when heating or cooling equipment is running.c CHECK LED indicates compressor malfunction.d EM. HT. LED indicates compressor malfunction.e CHECK LED comes on when 24 Vac is applies to the L terminal.f FAIL LED come on when a complete cirucuit is made on the X1 and X2 terminals.g CHECK LED lights to alert homeowner to HVAC maintenance or service needs.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Order Stages Systems Led Number Description Terminals Heat Cool Switch Changeover Indication
T8611G2002 TRADELINE®; Full seven-day programcapability. Programmable fan and backlighting features. (Fig. 31).
Y1,W1,W2,G,E,L,R,C,O/B,X1,X2,
OT,OT
2 1 EM.HT.-HEAT-OFF-
AUTO-COOL
Automatica CHECKe
FAILf
T8611G2028 Same as T8611G2002 except PremierWhite™, 7-day program capability.Programmable fan and back lightingfeatures. (Fig. 31).
Y1,W1,W2,G,E,L,R,C,O/B,X1,X2,
OT,OT
2 1 EM.HT.-HEAT-OFF-
AUTO-COOL
Automatica CHECKe
FAILf
T8611M2017 TRADELINE®; full 7-day programcapability. Programmable fan and backlighting features.
Y1,Y2/W2,W3,G,E,L,
R,O/B,C,X1,X2,OT,OT
3 2 EM.HT.-HEAT-OFF-
AUTO-COOL
Automatica CHECKe
FAILf
T8611M2025 Same as T8611M2017 except PremierWhite™, 7-day program capability.Programmable fan and back lightingfeatures.
Y1,Y2,W2,W3,G,E,L,R,O/B,C,X1,X2,OT,OT
3 2 EM.HT.-HEAT-OFF-
AUTO-COOL
Automatica CHECKe
FAILf
PC8900A1007/W8900B1002
TRADELINE®; Perfect Climate ComfortCenter™ Control System. 7-day (autocopy) programming.
R,C,RH,Y1/W1,G,O/B,AUX,E,Y2,
W2,L
3 2 EM.HT.-HEAT-OFF-
AUTO-COOL
Automatica CHECKg
SYSTEMb
70-6627 • 5
Thermostat Descriptions and General InformationThis section describes some of the heat pump thermostats that Honeywell manufactures. Since heat pumps requirethermostats with special features such as control of changeover valves, this section also explains some of the featuresand requirements unique to heat pump thermostat applications.
Electromechanical Heat Pump ThermostatsT841 Heat Pump Thermostats
The T841 models control two-stage heat and one-stage cool in heat pump systems, using manual changeover. Heatanticipators are either adjustable or fixed; cooling anticipator is fixed. T841A models include up to three LED indicatorlights; T841B models include up to two LED indicator lights. Provision for an outdoor reset to improve thermalperformance is also available on select models.
Y594 Combination Packs for Heat Pump ApplicationsThe Y594 Packs combine the appropriate T874 Multistage Thermostat and the Q674 Subbase for specific heat pumpapplications. Y594G models have automatic changeover; Y594R model has manual changeover. Heat anticipators areeither adjustable or fixed; cooling anticipator is fixed. Accessories include tamper-resistant cover and locking leverassembly with thermometer, locking lever stops, outdoor thermistor, TG504 Key Lock® Cover, and the TG511Versaguard™ Universal Thermostat Guard.
Outdoor ResetSome heat pump thermostats apply outdoor reset to minimize the effect of the interstage differential. It takes more than aone-degree change in temperature to initiate the second stage of heating. Added to a certain amount of droop underhigh loads, there can be a fairly large offset between the setpoint temperature and the room temperature. To correct thisdifference, an outdoor thermistor is used.
In warm weather, the outdoor thermistor has a very low resistance, permitting a large amount of current to flow in theheater. This reduces the call for second stage heating.
In cool weather, the outdoor thermistor has a very high resistance, permitting a small amount of current to flow in theheater. When this happens, calls for second stage heating are more frequent. This helps reduce the difference betweenthe setpoint temperature and the room temperature.
Select one of the following T841 or Y594 models if a thermostat with outdoor reset capability is required:T841A1555Y594G1161Y594R1763
If an outdoor thermistor is not provided, use the Honeywell C815A Outdoor Thermistor, ordered separately.
NOTE: All Honeywell electronic heat pump thermostats are droopless controls and do not require the use of outdoor reset.
Electronic Non-programmable Heat Pump ThermostatsT8411 Electronic Heat Pump Thermostats
The T8411 models control two-stage heat and one-stage cool in heat pump systems, using manual changeover only.First stage heat anticipation is fixed; second stage heat anticipation is selectable at 3, 6, or 9 cph. Setpoints arepermanently held in memory (no batteries required) and retained during power failures. Electronic thermostats providedroopless temperature control.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 6
T8511 Deluxe Electronic Heat Pump ThermostatsThe T8511 models control two-stage heat and one-stage cool in heat pump systems, using manual or automaticchangeover. First stage heat anticipation is fixed; second stage heat anticipation is selectable at 3, 6, or 9 cph. Setpointsare permanently held in memory (no batteries required) and retained during power failures. Electronic thermostats providedroopless temperature control. The T8511 models also include a backlit display and outdoor sensing capability.
Electronic Programmable Heat Pump ThermostatsT8011 Standard Electronic Heat Pump Thermostats
The T8011 models provide two-stage heat and one-stage cool control for heat pump systems, using manualchangeover. First stage heat anticipation is fixed; second stage heat anticipation is selectable at 1, 3, 6, or 9 cph. Theuser can program up to four time periods and temperature setpoints. All programs and setpoints are permanently held inmemory in the event of a power outage. Electronic thermostats provide droopless temperature control.
Chronotherm® III Electronic Heat Pump ThermostatsThe T8611 Chronotherm III models provide up to three-stage heat and two-stage cool control for heat pump systems,using manual or automatic changeover. Models are available with selectable daily schedules for weekdays, Saturday,and Sunday; or full 7-day programming. Models include LED indication for system operation and status. Battery backup,with low battery indication, maintains clock and memory during power outages. Adjustable second stage cycling allowsfor use of the thermostat with electric heat or fossil fuel while providing optimum comfort.
Using the Chronotherm III or Chronotherm IV T8611M on Two-Speed Heat Pump Compressor EquipmentThe T8611M is a three-stage heat/two-stage cool thermostat used to control multistage heat pump equipment. However,there is no difference in controlling multistage equipment and in controlling two-speed multistage equipment. Thedifferential required between stage 1 and stage 2 in multistage equipment is the same as the differential requiredbetween low-speed and high-speed in two-speed equipment.
To connect the T8611M to two-speed heat pump equipment:1. Connect the Y terminal to the low-speed compressor terminal.2. Jumper the Y2 and W2 terminals.a
3. Connect the Y2 terminal to the high-speed compressor terminal.a
4. Connect all other terminals as shown in the wiring diagram below.5. Configure the O/B terminal for changeover in either heating or cooling.
Equipment FunctionEquipmentTerminals
Transformer Common
Power
Fan
Cooling Changeover
Heating Changeover
1st Stage Compressor
2nd Stage Compressor
Third Stage Heat
Emergency Heating
M13229
T8611MTerminals
C C
R R
G G
O O or
O/B
B B or
O/B
Y Y
Y2 Y2
W2
W3 W3
E E
a
Fig. 1. Using the T8611M on two-speed heat pump compressor equipment.
a On selected T8611M models, the high speed compressor is wired to the Y2 terminal. In these cases, no jumper is required.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 7
Chronotherm IV Electronic Deluxe Heat Pump ThermostatsThe T8611 Chronotherm IV thermostat models provide up to three-stage heat and two-stage cool control for heat pumpsystems, using manual or automatic changeover. These models provide full 7-day programming capability. Models withprogrammable fan operation are available for homeowner comfort. Backlighting on the large display makes the LCD veryeasy to read. Adaptive Intelligent Recovery™ control brings the room temperature to the desired temperature setpoint at theprogrammed time, maximizing comfort and energy savings. First stage heat anticipation is fixed; second stage heatanticipation is selectable.
Adaptive Intelligent Recovery™ Control (Night Setback and Heat Pumps)Heat pump applications are ideal for night setback and energy savings. However, in order to maximize the energy savedin a night setback mode, use the T8611 Chronotherm® III or T8611 Chronotherm® IV Thermostats with AdaptiveIntelligent Recovery™ control.
Adaptive Intelligent Recovery™ control assures that the comfort setting is achieved at the programmed time regardlessof weather conditions. Conventional recovery starts recovery at the beginning of the programmed time period and usesthe equipment to achieve the comfort settings as soon as possible.
Unlike the Chronotherm III models, the Adaptive Intelligent Recovery control can be turned off in the Installer Set-upmode in the Chronotherm IV thermostat. Honeywell does not recommend this because the auxiliary heat comes onwhen the program time begins, and runs continuously until the setpoint is reached.
Applications Requiring Special System HookupsUsing a Chronotherm III T8611G or T8611M on Systems Requiring Separate W 1 and Y1
TerminalsThe Chronotherm III T8611G and T8611M are designed with only one common compressor terminal. The Y terminal isenergized on a call for stage 1 heat and stage 1 cool. However, some multistage heat pump equipment requires oneterminal to be energized on a call for stage 1 heat (W1) and one terminal to be energized on a call for stage 1 cool (Y1).In order for the T8611G or T8611M to accommodate this requirement, a separate switching relay must be added to theinstallation. See the following wiring diagrams for heat pumps that provide changeover in the heating mode and for heatpumps that provide changeover in the cooling model.
Heat Pumps with Heating Mode ChangeoverHere is how the switching relay allows the system to work properly:* The Y terminal is connected to the equipment terminal W1 through the normally closed contacts on the R8222B
Switching Relay. When the thermostat calls for heat, the thermostat Y terminal activates the first stage of heating.
* The O terminal is connected to the coil terminals on the R8222B Switching Relay. When the system switch is in theCOOL position, the O terminal is energized, reversing the logic of the Chronotherm III T8611G and T8611M Yterminal. Now when the thermostat calls for cooling, the Y terminal activates the first stage of cooling.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 8
Fig. 2. Installing an R8222B Switching Relay on heat pumps requiring heating mode changeover.
Heat Pumps with Cooling Mode ChangeoverHere is how the switching relay allows the system to work properly:* The Y terminal is connected to the equipment terminal Y1 through the normally closed contacts on the R8222B
Switching Relay. When the thermostat calls for cooling, the thermostat Y terminal activates the first stage of cooling.
* The B terminal is connected to the coil terminals of the R8222B Switching Relay. When the system switch is in theHEAT position, the B terminal is energized, reversing the logic of the Chronotherm® III T8611G and T8611M Yterminal. Now when the thermostat calls for heating, the Y terminal activates the first stage of heating.
Fig. 3. Installing an R8222B Switching Relay on heat pumps requiring cooling mode changeover.
Equipment FunctionEquipmentTerminals
Power
1st Stage Cool
2nd Stage Cool
Fan
1st Stage Heat
2nd Stage Heat
Transformer Common
Heating Changeover
M13231
T8611MTerminals
R R
Y1
Y2 Y2
G G
W1
W2 W2
C C
Y
O
B BR8222B Relay
Equipment FunctionEquipmentTerminals
Power
1st Stage Cool
2nd Stage Cool
Fan
1st Stage Heat
2nd Stage Heat
Transformer Common
Cooling Changeover
M13230
T8611MTerminals
R R
Y1
Y2 Y2
G G
W1
W2 W2
C C
Y
B
O OR8222B Relay
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 9
Changing Fan Operation in Emergency Heat Mode for Electronic ThermostatsIn the emergency heat mode (system switch in EM. HT. position), the thermostat controls the fan operation with a call forfirst stage heat. This means that when the thermostat calls for heat, the thermostat also calls for fan operation. However,this fan operation is not desirable on some types of systems.
To change the fan operation on the TRADELINE and SUPER TRADELINE models, follow the wiring diagram shownbelow. Connecting the thermostat and relay to the equipment in this manner disables the fan switch in the emergencyheat mode. During normal operation, the fan switch is enabled and the fan operation is as described in the installationinstructions.
Fig. 4 Changing fan operation in emergency heat mode for electronic thermostats.
Heat Pump Manufacturer Relay Wiring ConnectionsThe wiring connections for some thermostats to specific types of heat pump equipment require a separate relay forproper operation. Refer to Fig. 5 through 13 for the wiring connections of these types of equipment.
ThermostatM13232
R (Power)
E C (Common)
E (EM. Heat)
G G (Fan)
R8222B Relay Equipment
Equipment FunctionExisting Control
Terminal Designation
Transformer Common
1st Stage Cooling
1st Stage Heating
M13235
New TerminalDesignation
C C
Y1
W1
Y
O
Fig. 5. Relay wiring connections for Carrier equipment (typical 38BQ), and T8511M, T8611M,PC8900/W8900B1002. Require relay (R8222B1067 typically) for proper operation.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 10
Fig. 6. Relay wiring connections for Evcon/Coleman equipment (3200, 3300). Requires R8222B1067Relay to operate system. Equipment requires normally energized emergency heat.
Fig. 7. Relay wiring connections for Evcon/Coleman equipment (3200, 3300, 3360, 3400, 6000, and 6500).Requires R8222B1067 Relay to operate system. Equipment requires normally energized emergency heat.
Equipment FunctionExisting Control
Terminal Designation
Common
Power
Emergency Heat
M13241
New TerminalDesignation
Black C
Red R
A L
E
Equipment FunctionExisting Control
Terminal Designation
Common
Power
Emergency Heat
M13236
New TerminalDesignation
Black C or
X
Red R
A
E
Fig. 8. Relay wiring connections for Lennox equipment (HP9, HP10). Requires R8222B1067 Relay to operate thesystem monitor light (emergency heat LED) on TRADELINE replacement thermostats. Tape off if light is not desired.
Equipment FunctionExisting Control
Terminal Designation
Indoor Power
System Monitor
M13237
New TerminalDesignation
VR R
L
L or
X1
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 11
Fig. 10. Relay wiring connections for Magic Chef equipment (PE Series). Requires R8222B1067 Relayif outdoor section has reset shunt relay and malfunction light indicator is desired on thermostat.
Fig. 9. Relay wiring connections for Lennox equipment (HP16, HP19, HP21, HP22 Direct Replacements).Requires R8222B1067 Relay to operate the system monitor light (emergency heat LED) on
TRADELINE replacement thermostats. Tape off if light is not desired.
Fig. 11. Relay wiring connections for Mammoth. Requires R8222B1067 Relay if outdoorsection has reset shunt relay and malfunction light indicator is desired on thermostat.
Equipment FunctionExisting Control
Terminal Designation
Power
System Monitor
M13238
New TerminalDesignation
VR R
L
L or
X1 or
F
Equipment FunctionExisting Control
Terminal Designation
Power
System Monitor
M13239
New TerminalDesignation
R R
X1
L or
X1
Equipment FunctionExisting Control
Terminal Designation
Power
System Monitor
M13240
New TerminalDesignation
R1 or
R R
L or
X
L or
X1
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 12
Equipment FunctionEquipmentTerminals
Transformer Common
Power
Fan
1st Stage Heating
1st Stage Cooling
Changeover Valve
2nd Stage Heating
Emergency Heat
2nd Stage Cooling
M13233
PC8900Terminals
C C
R R
G G
O/B
W1 Y1/W1
Y1
B
W2 Aux.
E E
Y2 Y2
Equipment FunctionEquipmentTerminals
Transformer Common
Power
Fan
1st Stage Cooling
1st Stage Heating
Changeover Valve
2nd Stage Heating
Emergency Heat
2nd Stage Cooling
M13234
PC8900Terminals
C C
R R
G G
O/B
Y1 Y1/W1
W1
O
W2 Aux.
E E
Y2 Y2
Fig. 12. Relay wiring connections for PC8900 in heat pump applicationsrequiring separate Y 1 and W1 terminals with a heating changeover.
Fig. 13. Relay wiring connections for PC8900 in heat pump applicationsrequiring separate Y 1 and W1 terminals with a cooling changeover.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 13
Understanding CircuitsTo understand wiring diagrams, it is important to know what all the symbols mean and how to trace the path of thecircuits from the transformer. Circuit descriptions and terminology are defined as follows:
Auto changeover—refers to the presence of an AUTO position in the system switching (EX: Q674F with OFF-COOLAUTO-HEAT-EM. HEAT switching). The thermostat automatically changes between heat and cool modes asindoor temperature changes.
Manual changeover—requires a system switch movement to change mode (EX: Q674L with EM. HT.-HEAT-OFF-COOL switching).
Cool changeover valve—operates on cooling. The reversing valve or relay is activated either by moving the systemswitch to COOL (manual changeover) or by a mercury switch that makes on a temperature rise (auto changeover).
Heat changeover valve—operates on heating. The reversing valve or relay is activated either by moving the systemswitch to HEAT (manual changeover) or by a mercury switch that makes on a temperature fall (auto changeover).
System monitor relay—optional equipment on some heat pumps. This system monitor relay detects a malfunction inthe compressor and indicates the malfunction by activating the EMERGENCY HEAT LED on the switchingsubbase. The system monitor relay may be wired to the L terminal on some thermostats
Each mercury switch is identified by function:H1—Stage 1 Heating.H2—Stage 2 Heating.H3—Stage 3 Heating.C1—Stage 1 Cooling.C2—Stage 2 Cooling.C3—Stage 3 Cooling.C/O—Changeover (heat pumps).
Each anticipator is identified and each switch affected is named (EX: H1 anticipator, C1 anticipator).
All T874 Multistage Thermostats use mercury switches. Each schematic indicates switch operation by being drawnin the open position with an arrow indicating operation with a temperature RISE or FALL.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
M5848
KEY TO HOOKUP SYMBOLS
TRANSFORMER (24 VAC SECONDARY)
RELAY/CONTACTOR CONTACTS
LED
RELAY OR CONTACTOR COIL
MERCURY SWITCH
FIXED ANTICIPATORHIGH RESISTANCE(TYPICALLY 5 KILOHMS)
ADJUSTABLE ANTICIPATORLOW RESISTANCE(TYPICALLY 0 TO 5 OHMS)
TERMINAL
ODTOUTDOOR THERMOSTAT
EHREMERGENCY HEAT RELAY
RTDTIME DELAY RELAY
RDDEFROST RELAY
CHPPRESSURE SWITCH
LACOLOW AMBIENT CUTOFF
B
Fig. 14. Key to hookup symbols.
70-6627 • 14
NEMA Standard Transformers Give You Better ControlUL sets the safety standards all transformers must meet. But these are minimum standards. The Honeywell AT20A,AT40A, AT72D and AT87A Transformers do even more; they meet tough voluntary standards of the National ElectricalManufacturer’s Association (NEMA).
Why is this so important? Because today’s sophisticated control systems require reliable, accurate voltage output foroptimal system performance. It’s especially important for electrical controls (OEM boards in high efficiency furnaces, forexample) or resistive heaters, such as thermostat heat anticipators.
For better performance, some heat pumps require a NEMA standard transformer. Conformance to NEMA standardsassures the voltage output of a transformer will remain within acceptable limits, regardless of load conditions. Noexcessively high open-circuit voltage under light load conditions. No low, “brown-out” voltage levels under heavy loadconditions. At 100% load, the transformer secondary must supply between 23 and 25 volts to meet the NEMA standard.
How can you tell that the transformers you buy meet this tough, high standard? Look for the transformer to be marked:NEMA Type B (20VA), NEMA Type D (40VA), NEMA Type E (48-50 VA). Only transformers conforming to the NEMAstandard can be marked in this way. The following are recommended Honeywell NEMA standard transformers:AT72D1691, AT72D1683, AT87A1106
27
26
25
24
23
22
21
20
19
18
17
16
15
14
0 50 100 150 % OF LOAD
SE
CO
ND
AR
Y V
OLT
AG
E
200
M993
Fig. 15. NEMA Class 2 transformer band.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 15
Typical System Hookup Diagrams
M6060A
AUTO
ON
H2
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
NO AUTO FAN IN EMERGENCY HEAT.
LACO CHP
W2
E
B
Y
O
EM. HT.
HEAT
OFF
COOL
R
AUX. HT.LED (GREEN)
EM. HT.LED (RED)
COOL CHANGE-OVER VALVE
COMPRESSOR CONTACTOR
HEAT CHANGE-OVER VALVE
SYSTEM MONITOR
EM. HT. RELAY
RTD 1
L1 (HOT)
L2
FAN RELAY
EHR 2
ODT 2
ODT 1RTD 1
RTD 2
RTD 3
RD
1
EHR 1H1
C1FALL
FALL
G
H1/C1ANTICIPATOR
L
H2 ANTICIPATOR
2
2
FANSWITCH
SYSTEMSWITCH
X
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Fig. 16. Internal schematic and typical wiring diagram for T841A1308.
70-6627 • 16
Fig. 17. Internal schematic and typical wiring diagram for T841A1555.
M8728
H2FALL
H1
FALL
C1
L1 (HOT)L2
13
2
1
2
3
POWER SUPPLY. PROVIDE DISCONNECT MEANSAND OVERLOAD PROTECTION AS REQUIRED.
FIELD REMOVABLE JUMPER.
AUTO FAN IN EMERGENCY HEAT.
AUTO
ON
FANSWITCH
SYSTEM SWITCH
EM. HT.
HEAT
OFF
COOL
Y
O
X2
T
R
F
B
U
W
G
9
2
3
5
8
11
12
10
1
4 COMPRESSORCONTACTOR
COOL CHANGEOVERRELAY
OUTDOORTHERMISTOR
OUTDOORTHERMOSTAT
COMPRESSORMONITOR
EM. HEATLED (RED)
AUX. HEATLED (GREEN)
FAN RELAY
AUX. HEATRELAY
C ANTICIPATOR
H1/CANTICIPATOR
RESET
Fig. 18. Internal schematic and typical wiring diagram for T841A1712 and T841A1738.
HEAT PUMP TH ERMOSTAT CROSS REFERENCE/SELECTION GUIDE
M13249
H2FALL
H1
FALL
C1
L1 (HOT)
L21
1 POWER SUPPLY. PROVIDE DISCONNECT MEANSAND OVERLOAD PROTECTION AS REQUIRED.
AUTO
ON
FANSWITCH
SYSTEM SWITCH
EM. HT.
HEAT
OFF
COOL
Y
B
X
W2
G
EM. HEATLED (RED)
O
W3
10
5
2
3
6
12
11
9
COMPRESSORCONTACTOR
HEATCHANGEOVERRELAY
AUX. HEAT RELAY
EM. HEAT RELAY
FAN RELAY
W3 RELAY
COOL CHANGEOVERRELAY
H1ANTICIPATOR
C1ANTICIPATOR
H2ANTICIPATOR
AUX. HEATLED (GRN)
R
E
8
7
70-6627 • 17
Fig. 19. Internal schematic and typical wiring diagram for T841B1000.
H2FALL
H1
FALL
C1
L1 (HOT)L2
1
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
H1/C1ANTICIPATOR
H2 ANTICIPATOR
SYSTEMSWITCH
COOL
OFF
HEAT
COOL CHANGEOVER VALVE
COMPRESSORCONTACTOR
FAN RELAY
HEAT CHANGEOVERVALVE
HEAT RELAY 1
HEAT RELAY 2
FAN SWITCH
AUTO
ON
M6068A
W1
W2
B
G
R
X
Y1
O
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Fig. 20. Internal schematic and typical wiring diagram for Y594G1161.
H1
FALL
H2
FALL
CHANGEOVER
RISE
C1RISE
L1 (HOT)L2
1
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
C1ANTICIPATOR
OFF
AUTO
EM .HT.
SYSTEMSWITCH
AUX. HT.LED (GREEN)
EM. HT.LED (RED)
AUX. HT.RELAY
OUTDOORTHERMOSTAT
CHANGEOVERVALVE
FAN RELAY
C815A OUTDOORTHERMISTOR
T
G
O
R
X2
W
B
F
Y
FANSWITCH
AUTO
ON
H1 ANTICIPATOR
RESETHEATER
M1593
70-6627 • 18
Fig. 22. Internal schematic and typical wiring diagram for Y594G1419 and Y594G1476.
Fig. 21. Internal schematic and typical wiring diagram for Y594G1633.
H1
FALL
RISE
CO
L1 (HOT)
L2
1
C1
RISE1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
C1 ANTICIPATOR
H1 ANTICIPATOR FAN SWITCH
AUTO
ON
SYSTEM SWITCH
AUTO
HEAT
OFF
COOL
1
2
4
6
8
9
10
O
W2
X
E
L
B
R
G
Y
AUX. HEAT RELAY
FAN RELAY
EM. HT. RELAY
B RELAY
M8702
11
12
COMPRESSORCONTACTOR
EM. HT.
EM. HT.LED (RED)
AUX. HEATLED (GREEN)
COOL CHANGEOVER VALVE
H2
FALL
H2 ANTICIPATOR
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
CHANGEOVER(HEAT)
FALL
H2
FALL
RISE
H1FALL
L1 (HOT)
L2 1
2
1
2
RISEC1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
W1 - Y1 JUMPER IS Y TERMINAL; REMOVE JUMPER WHEN W1 RELAY IS USED. M8703
1
2
3
4
5
6
8
9
10
11
Y1
W1
B
O
X
X1
E
W2
R
G
W3
X2
W3 RELAY
FAN RELAY
AUX. HEAT RELAY
EM. HT.RELAY
COMPRESSORFAULT
CHECKLED (RED)
AUX.HT. LED(GREEN)
EM. HT.LED (RED)
SYSTEMSWITCH
OFF
EM. HT.
HEAT
AUTO
COOL COOL CHANGEOVERVALVE
HEAT CHANGEOVERVALVEW1 RELAY
COMPRESSORCONTACTOR
C1 ANTICIPATOR
CHANGEOVER(COOL)
H2 ANTICIPATOR
H1 ANTICIPATOR
FANSWITCH
AUTO
ON
70-6627 • 19
Fig. 23. Internal schematic and typical wiring diagram for Y594R1763.
H1
FALL
C1
L1 (HOT)L2
1
G
W
U
B
F
R
T
X2
O
Y
FAN RELAY
AUX. HEATERRELAY
COMPRESSORMONITOR
OUTDOORTHERMOSTAT
OUTDOORSENSOR
COOL CHANGEOVERVALVE
COMPRESSORCONTACTOR
AUX. HEATLED (GREEN)
EM. HEATLED (RED)
1
2
3
4
5
6
11
FANSWITCH
AUTO
ON
EM. HEAT
HEAT
OFF
COOL
SYSTEMSWITCH
H2
FALL
POWER SUPPLY. PROVIDE DISCONNECT MEANS ANDOVERLOAD PROTECTION AS REQUIRED.
FIELD REMOVABLE JUMPER.
1
2
2
M8701
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Fig. 24. Internal schematic and typical wiring diagram for Y594R1797.
L1 (HOT)
L2
1
X
L
W2
EM. HEATLED (RED)
AUX. HEATLED (GRN)
AUX. HEATRELAY
FAN RELAY
"B" RELAY
GCOOL CHANGEOVERVALVE
EM. HEAT RELAY
COMPRESSOR CONTACTOR
O
Y
E
B
SYSTEMSWITCH
EM. HT.
HEAT
OFF
COOL
H1 AND C1ANTICIPATOR
C1H1
FALL
H2
H2ANTICIPATOR
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.M8700
AUTO
ON
FANSWITCH
FALL
R2
3
4
6
70-6627 • 20
Fig. 25. Internal schematic and typical wiring diagram for Y594R1425.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
H1
FALL
C
L1 (HOT)L2
1
EM. HT.LED (RED)
AUX. HT.LED (GRN)
W3
O
L
G
R
W2
E
X
X2
B
W1
Y
AUX. HT. RELAY
EM. HT. RELAY
HEATCHANGEOVERVALVE
W1 RELAY
COMPRESSORCONTACTOR
W3 RELAY
COOL CHANGEOVERVALVE
COMPRESSORMONITOR
FAN RELAY
H2
FALL
H1ANTICIPATOR
C ANTICIPATOR
H2ANTICIPATOR
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOADPROTECTION AS REQUIRED.
REMOVE JUMPER WHEN W1 RELAY IS USED.
FACTORY-INSTALLED JUMPER.
1
M8713
FANSWITCH
AUTO
ON
SYSTEMSWITCH
EM. HT.
HEAT
OFF
COOL
3
22
3
1
2
3
4
5
6
11
70-6627 • 21
Fig. 26. Typical wiring diagram for T8611G1004 and T8611G1103.
L1 (HOT)
L2
X1
X2
CHECKLED(YELLOW)
FAULT DETECTIONSWITCH
SWITCH TO R (POWER) SIDE OF SYSTEM TRANSFORMER
TO C/X
TO R X1
X2
CHECKLED(YELLOW)
SWITCHINGDEVICE
SWITCH IN SECONDARY OFSEPARATE TRANSFORMER
X1
X2
CHECKLED(YELLOW) FAULT DETECTION
SWITCH
SWITCH TO C (COMMON) SIDE OF SYSTEM TRANSFORMER
TO C/X
TO R
24 VAC
L1 (HOT)L2
1
2
1
2
3
X1
X2
CHECKLED(YELLOW)
3
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
DENOTES THERMOSTAT TO SUBBASE INTERCONNECT.
POSSIBLE CHECK LED CIRCUITS:
THERMO-STATLOGICCIRCUIT
SUBBASELOGIC/CONTROLCIRCUIT
POWERSUPPLY
FANSWITCH
ON
AUTO
EM. HT.LED(RED)
AUX. HT.LED (GREEN)
HIGHLIMIT
HIGHLIMIT
HEAT 1COMPRESSORCONTACTOR
HEAT CHANGEOVERVALVE
COOL CHANGEOVERVALVE
FAN RELAY
EM. HT. RELAY
AUX. HT.RELAY
MONITOR
SYSTEMSWITCH
EM. HT.
HEAT
OFF
AUTO
COOL
COOL
C. O.
C. O.
HEAT 2
M6020A
Y
B
O
G
E
W2
L
C/X
R
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 22
Fig. 27. Typical wiring diagram for T8611M7008.
L1 (HOT)
L2
X1
X2
CHECKLED(YELLOW)
FAULT DETECTIONSWITCH
SWITCH TO R (POWER) SIDE OF SYSTEM TRANSFORMER
TO C
TO R X1
X2
CHECKLED(YELLOW)
SWITCHINGDEVICE
SWITCH IN SECONDARY OFSEPARATE TRANSFORMER
X1
X2
CHECKLED(YELLOW) FAULT DETECTION
SWITCH
SWITCH TO C (COMMON) SIDE OF SYSTEM TRANSFORMER
TO C
TO R
24 VAC
L1 (HOT)L2
1
4
3
1
2
X1
X2
CHECKLED(YELLOW)
2
5
6
3
4
5
6
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
POSSIBLE CHECK LED CIRCUITS:
THERMO-STATLOGICCIRCUIT
SUBBASELOGIC/CONTROLCIRCUIT
POWERSUPPLY
FANSWITCH
ON
AUTO
EM. HT.LED(RED)
AUX. HT.LED (GREEN)
HIGHLIMIT
HIGHLIMIT
HEAT 1
S1 S1
S2 S2
S3 S3
200905 REMOTESENSOR
STAGE 2 COMPRESSORCONTACTOR
STAGE 1 COMPRESSORCONTACTOR
HEAT CHANGEOVERVALVE
COOL CHANGEOVERVALVE
FAN RELAY
EM. HT. RELAY
STAGE 2RELAY
AUX. HT.RELAY
MONITOR
SYSTEMSWITCH
EM. HT.
HEAT
OFF
AUTO
COOL
COOL 1
COOL 2
C. O.
C. O.
HEAT 2
HEAT 3
SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMINAL.
NOMINAL 24 VAC POWER MUST BE PRESENT BETWEEN R AND C TERMINALS FOR THERMOSTAT OPERATIONS.
AVAILABLE ONLY ON MODLES WITH SEPARATE SENSOR FOR REMOTE TEMPERATURE SENSING.
RECOMMENDED INTERCONNECT CABLE: 18-GAUGE THERMOSTAT CABLE, 200 FT. (61 M) MAXIMUM LENGTH.ROUTE INTERCONNECT CABLE AWAY FROM SOURCES OF ELECTRICAL NOISE. M2656
Y2
Y
B
O
G
E
W2
W3
L
C
R
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 23
Fig. 28. Typical wiring diagram for T8611R1000.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Fig. 29. Typical wiring diagram for T8011R and T8411R.
L1 (HOT)
L2
1
1
2
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
REMOVE JUMPER, WHEN SUPPLIED, FOR SYSTEMS WITH SEPARATE HEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y).
SYSTEM SWITCH
HEAT
OFF
COOL
R
W2
L
B
O
Y
EM. HT.
W1
E
AUXILARYHEAT RELAY
CHANGEOVER VALVE HEAT
CHANGEOVER VALVE COOL
COMPRESSORCONTACTOR
COMPRESSORCONTACTORHEAT
FAN RELAY
RELAY
EMERGENCYHEAT RELAY
G
C
THERMOSTATLOGIC
THERMISTORSENSOR
POWERSUPPLY
ON
AUTO
STAGE 2 RELAY
STAGE 1 RELAY
FAN SWITCH
M11333
L1 (HOT)L2
1
3
1
2
3
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
REMOVE JUMPER FOR SYSTEM WITH ISOLATED STAGE 1 HEATING AND COOLING CONNECTIONS.
DENOTES THERMOSTAT TO SUBBASE INTERCONNECT.
THERMO-STATLOGICCIRCUIT
SUBBASELOGIC/CONTROLCIRCUIT
POWERSUPPLY
FANSWITCH
ON
AUTO
EM. HT.LED(RED)
AUX. HT.LED (GREEN)
HIGHLIMIT
HIGHLIMIT
HEAT 1COMPRESSORCONTACTOR
DEFROST CONTROL
HEAT CHANGEOVERVALVE
COOL CHANGEOVER VALVE
FAN RELAY
STAGE 1HEAT RELAY
AUX. HT.RELAY
MONITOR
SYSTEMSWITCH
EM. HT.
HEAT
OFF
COOL
COOL 1
HEAT 2
M6019A
Y1
P
B
O
G
W1
W2
L
C
R
EM. HT. RELAY
E
2
70-6627 • 24
Fig. 30. Typical wiring diagram for T8511G.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
L1 (HOT) L2
1
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
O/B IS FIELD CONFIGURABLE TO SELECT ENERGIZED IN HEATING ORCOOLING. (DEFAULT IS ENERGIZED IN HEATING).
REMOVE JUMPER, WHEN SUPPLIED, FOR SYSTEMS WITH SEPARATEHEATING COMPRESSOR CONTACTOR (W1 SEPARATE FROM Y1).
R
C
W1
W2
E
Y1
G
AUXILIARYHEAT RELAY
EMERGENCYHEAT RELAY
COMPRESSORCONTACTOR
CHANGEOVERVALVE
FAN RELAY
COMPRESSORCONTACTOR HEAT
COMPRESSORMONITOR
L
OT
THERMOSTATLOGIC
POWERSUPPLY
CHECK LED (RED)
OUTDOORSENSOR C7089B
M13281
OT
3
2
W1W2
E
Y1G
O/B
3
TO R
O/B
W1W2
E Y1 G O/B
70-6627 • 25
L1 (HOT) L2
1
1
2
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
WIRES TO OT TERMINALS SHOULD NOT SHARE CABLE WITH OTHER CONNECTIONS.
INSTALLER CONFIGURABLE. FACTORY DEFAULT IS O-ENERGIZED IN COOL MODE.
FACTORY-INSTALLED JUMPER; REMOVE IF A HEAT RELAY IS CONNECTED TO W1.
R
C
W1
W2
E
Y1
O/B
G
AUXILIARYHEAT RELAY
EMERGENCYHEAT RELAY
COMPRESSORCONTACTOR
CHANGEOVERVALVE
FAN RELAY
COMPRESSORCONTACTOR HEAT
COMPRESSORMONITOR
L
OT
THERMOSTATLOGIC
POWERSUPPLY
CHECK LED (RED)
FAIL LED (RED)
OUTDOORSENSOR C7089B
M13250
X1
X2
OT
3
4
W1W2E
YO/B
G
3
4
TO R
Fig. 31. Typical wiring diagram for T8611G2002 and T8611G2028.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 26
Electronic Thermostat (T8011, T8411, T8511, T8611)Sequences of Operation
T8011 Programmable Heat Pump Thermostat andT8411 Electronic Heat Pump ThermostatSequence of OperationThe Fan, Heat and Cool outputs are relay controlled. A loss of ac power, or a change in the SYSTEM switch setting can cause theoutputs to turn off. Table 2 shows the sequence of operations for the Fan settings and System modes.
Table 2. T8011 and T8411 Sequence of Operation.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
FAN Switch Settings SYSTEM Switch Settings Call for Action Energize Terminals Display Icons
Auto Cool None O None
Auto Cool Cooling O, Y, G
Auto Heat None B None
Auto Heat Stage 1 Heat B, W1, G
Auto Heat Stage 2 Heat B, W1, W2, G , Aux Ht indicator
Auto Em. Ht. None L Em Ht indicator
Auto Em. Ht. Stage 1 Heat L, E, G , Em Ht indicator
Auto Em. Ht. Stage 2 Heat L, E, W2, G , Em Ht and AuxHt indicators
70-6627 • 27
T8511 Deluxe Electronic Heat Pump ThermostatSequence of OperationThe thermostat energizes specific terminals depending on the Fan and System Settings. The LCD will display symbols and words toreport the condition of system. See Table 3 for specific information.
Table 3. T8511G Sequence of Operation for Separate Compressor Terminal (Y and W1) Models.
a Configure O/B (Select Models) in Installer Setup.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Fan Selection System Selection Call Energize Display Icons
Auto Off None None None
On Off Fan G
Auto Cool None O/Ba None
Auto Cool or Auto Cooling O/Ba, G, Y1 and
Auto Heat None O/Ba None
Auto Heat or Auto Stage 1 heating O/Ba, W1, G and
Auto Heat or Auto Stage 2 heating O/Ba, W1, W2, G , , and Aux Ht
Auto Em Heat None O/Ba Em Ht
Auto Em Heat Stage 1 heating O/Ba, E, G , and Em Ht
Auto Em Heat Stage 2 heating O/Ba, E, W2, G , , Em Ht and Aux Ht
Auto Auto None O/Ba None
70-6627 • 28
T8611 Chronotherm IV Deluxe Programmable Heat Pump ThermostatSequence of OperationThe thermostat energizes specific terminals depending on the Fan and System Settings. The LCD will display the time, roomtemperature, system and fan selection. Symbols will be displayed when the heating, cooling or fan is energized. See Table 4 forspecific information.
NOTE: Terminals listed in the Energize column vary depending on model.
Table 4. Heat Pump System Sequence of Operation.
a Configure O/B (select models) in Installer Setup.b Based on last piece of equipment called (cooling = O or heating = B) and Installer Setup selection.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Selection
Fan System Call Energize Display Icons
Auto Off None None None
On Off None G
Auto Cool None O or O/Ba None
Auto Cool or Auto Stage 1 Cooling O or O/Ba with G and Y1
and
Auto Heat None B or O/Ba None
Auto Heat or Auto Stage 1 heating B or O/Ba with W1 and G and
Auto Heat or Auto Stage 2 heating B or O/Ba with W2, W1 and G , , and Aux Ht
Auto Em Heat None B or O/Ba Em Ht
Auto Em Heat Stage 1 heating B or O/Ba, E and G (select models)
, and Em Ht
Auto Em Heat Stage 2 heating B or O/Ba, E and W2 and G (select models)
, , Em Ht and Aux Ht
Auto Auto None O/Ba, O or Bb None
70-6627 • 29
a Use with ST82 Time Delay Relay for extended fan operation.b See pages 42-45 for hookup details.c Carrier thermostats manufactured by American Stabilis.
a Use T8611M or W8900B for 3 heat, 2 cool applications.
a Provision for optional remote sensor, not provided.b See page 49 for hookup details.
a See page 37 for hookup details.b Compressor protection is generally provided by the equipment manufacturer.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Thermostat Manufacturer Cross ReferenceMANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
American Stabilisa HP-1 T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011,T8611R, T8611G
HP-1EF T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011,T8611R, T8611G
HP-10EFb T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011,T8611R, T8611G
HP-15 Y594G1252, T8411, T8511, T8011, T8611R, T8611G,
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
Carrier Totalineb,c
Multistage Heat Pump MP10/11 T8611G
MP30 T8611M
MS10/11 Y594R1425
MS12/13 T841A1316a
MS20/21 Y594G1419
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
Enerstatb DSP400 T841A1001a
DSP410 T841A1001a
DSP600 T874W1031/Q674L1546, Y594W1014
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT a
Climate Technology Corporation CTC400 T841A1316, Y594G1419, T8411, T8511, T8011, T8611
CTC403 T841A1316, Y594G1419, T8411, T8511, T8011, T8611,
70-6627 • 30
a See pages 92-93 for hookup details.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
a See pages 57-58 for hookup details.
a See pages 75-81 for hookup details.
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
Secoa TA2000 T841A1001, Y594R1425, Y594G1419, T8411 T8511, T8011,T8611
TA2010 T841A1001, Y594R1425, Y594G1419, T8411 T8511, T8011,T8611
TA2040 T841A1001, Y594R1425, Y594G1419, T8411 T8511, T8011,T8611
TA2050 T841A1001, Y594R1425, Y594G1419, T8411
TA2060 T841A1555 plus C815A1005
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
General Electrica 3AAT86B21A1 Y594G1161, T8411, T8511, T8011, T8611
3AAT86B14A1 T841A1316, Y594R1425, T8411, T8511, T8011, T8611
3AAT86B16D1 T841A1316, Y594R1425, T8411, T8511, T8011, T8611
3AAT80A1A1 T841A1712, Y594R1425, T8411, T8511, T8011, T8611
3AAT80A2A1 T841A1712, Y594R1425, T8411, T8511, T8011, T8611
3AAT80B1A1 Y594G1161, T8411, T8511, T8011, T8611
3AAT86B1A1 Y594G1161, T8411, T8511, T8011, T8611
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
Lennoxa 51H3901 (3AAB83C38)
T841A1316, Y594R1425, T8411, T8511, T8011, T8611G
51H4001 (3AAT88D38B2)
T841A1712, Y594G1419, T8411, T8511, T8011, T8611G
51H4301 (3AAT88D38C2)
T8611M, PC8900A1007/W8900B1002
21J7101 (3AAT89B38D1)
T841A1555, Y594R1763, Y594G1161, T8411, T8511, T8011,T8611G
21J7201 (3AAT89B38E1)
T841A1712, Y594R1425, T8411, T8511, T8011, T8611G
21J7301 (3AAT89B38F1)
T841A1712, Y594G1419, T8411, T8511, T8011, T8611G
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
Maple Chase 09520 T841A1316, Y594R1425, Y594G1419, T8411, T8511, T8011,T8611G
09620 T8611M, PC8900A1007/W8900B1002
09720 T8611M, PC8900A1007/W8900B1002
70-6627 • 31
a See pages 97-100 for hookup details.b Trane thermostats manufactured by General Electric or Honeywell.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
Tranea,b
Single-Stage Heat PumpBAY28X182/BAY28X185(T874A1184/Q674B1141)
T874A1036/Q674B1075
BAY28X182/BAY28X187(T874A1184/Q674E1033)
T874A1036/Q674C1058
BAYSTAT009(T874A1085/Q674B1018)
T874A1036/Q674B1018
Multistage Heat Pump ASYSTAT651 Y594G1161, T8411, T8511, T8011, T8611
AY28X138 Y594G1161, T8411, T8511, T8011, T8611
AY28X139 T841A1068, Y594R1763, T8411, T8511, T8011, T8611
AY28X164 T874D1165/Q674E1049
BAY28X138 (3AAT80B1A1),
Y594G1161, T8411, T8511, T8011, T8611
BAY28X140,
BAYSTAT138
BAYSTAT239 (3AAT86B1A1),
T841A1068, Y594R1763, T8411, T8511, T8011, T8611
BAY28X139,
BAY28X141,
BAY28X153A, (3AAT83F1B2)
BAYSTAT240 (3AAT80A1A1)
BAYSTAT339 (Y594R1284)
T841A1068, Y594R1763, T8411, T8511, T8011, T8611
BAYSTAT024B T8611M, PC8900A1007/W8900B1002
TAYSTAT500 T8611R, T8611G
70-6627 • 32
a See page 108 for hookup details.
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT
White Rodgersa Single-Stage Heat Pump
IF56-444 T8034C1234
IF93-36 T8600C1162
Multistage Heat Pump IC70-18 T841A1001, Y594G1252
IC70-24 T874D1165/Q674F1022
IC71-2 Y594G1419
IF58-910/S28-1 T841A1217, Y594R1300
IF58-910/S28-2 T841A1423, Y594R1615
IF58-910/S28-16 T841A1316, Y594R1425
IF58-911/S28-5 T841A1316, Y594G1419
IF58-911/S28-17 T841A1001, Y594G1252
IF58-911/S28-18 T841A1068, Y594R1136
IF58-56 T841A1050, Y594R1425
IF58-57 T841A1068, Y594R1136
IF58-58 T841A1217, Y594R1425
IF58-72 T841A1233, Y594R1615
IF58-77 T841A1316, Y594R1425
IF58-78 T841A1217, Y594R1425
IF58-83 T841A1217, Y594R1243
IF59-79 T841A1316, Y594R1425
IF60-25 T8600C1162
IF62-21 T8411, T8511, T8011, T8611R, T8611G
IF82-79 T8411, T8511, T8011, T8611R, T8611G
IF91-71 T8611M, PC8900A1007/W8900B1002
IF92-71 T8611M, PC8900A1007/W8900B1002
IF94-71 T8611M, PC8900A1007/W8900B1002
IF95-71 T8611M, PC8900A1007/W8900B1002
70-6627 • 33
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
Tips for Using This Heat Pump Cross ReferenceThis cross reference, alphabetized by equipment or thermostat manufacturer, provides the information needed tochoose and wire the Honeywell electromechanical, Chronotherm III, or electronic heat pump thermostats in newinstallations and replacement applications. It also gives you the opportunity to upgrade the system from a standard to adeluxe thermostat for improved performance and from manual changeover to the convenience of automatic heat/coolchangeover and to a Chronotherm® IV thermostat that puts the heat pump to work to save money. Best of all, you canupgrade to the PC8900/W8900B1002 Perfect Climate Comfort Center™ Control System. This one comfort centercontrols temperature, indoor air quality, ventilation, humidity, and zoning.
To use this Cross Reference:1. Identify heat pump equipment manufacturer and refer to those diagrams in this reference.2. Identify existing subbase model number if made by Honeywell, even if thermostat has equipment manufacturer’s
logo, and try to match up for verification. Some typical thermostats and subbases are listed in each section to makeidentification easier. The Honeywell model number is listed, followed by the equipment manufacturer model number,if available.
3. Make a listing of wiring terminals used and wire colors. You may want to write on the appropriate diagram in thiscross reference.
4. Note the unique control requirements your heat pump may have.— Determine reversing valve (changeover) mode. O terminal cool or B terminal heat is typical.— Identify first stage heat terminal. Connect to Y if a common terminal is used for first stage heat and cool, or to
W1 if a separate terminal is used for first stage heat.— Identify if device has manual or automatic changeover from heat to cool.— Identify what action, if any, is required for LED selection; e.g., auxiliary heat, emergency heat, check, or fail.
5. Select a replacement based both on the technical requirements and your customer’s needs; e.g., a working familymay find a Chronotherm® IV upgrade desirable.
6. After selecting the proper thermostat, use the corresponding control hookup diagram. See example below.
7. Connect only those terminals shown with lines to them on the diagram. Some terminals on the new thermostat maynot be used.
8. Refer to the following two pages for an example of a typical cross reference diagram and the associated footnotes.
Existing Control Terminal
Designation
M13251
Chronotherm IVThermostat
Perfect ClimateComfort CenterControl System
Hook wirepreviouslyon C to X
Chronotherm IIIThermostat
ElectromechanicalThermostat
ElectronicReplacementor Upgrade
Hook wirepreviouslyon R to R
or to
or to
or to
or to
or to
or to
C X C C C C
R R R R R R
or to
or to
70-6627 • 34
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
T8611
G2002
T8611
G2028
Function Y594R
1425
Y594G
1419
Y594G
1476
T8411
R1002
T8411
G1028
T8511
G1021
T8511
G1047
PC89
00/
W89
00B10
02
Electronmechanical
Electronic Replacement or Upgrade
Common A
Power
Compressor
1st StageHeat M
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/Sytem Defrost
Em. Heat
Multiple Heat Loads B
LED Indication
Defrost
2nd StageCompressor
2nd StageCool in two
Stage System
M13245
I III
C
F
C
CC
J
E
D
JJ JJ
H
J
H G
D
G
T8611
M10
02
T86
11M
2017
T
8611
M20
25 K
L
H
T841A
1712
I
D
T8011
R1006
T8011
R1014
T8611
R1000
T8611
G1004
L
Chronotherm® III
C
C
C
C
D
X X X C C C C C C C
R R R R R R R R R R
Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1 Y1/W1
– W1 W1 W1 W1 W1 W1 W1 – –
W2 W2 W2 W2 W2 W2 W2 W2 Y2 Aux.
G G G G G G G G G G
B B B B B B or
O/B B B or
O/B B or
O/B O/B
O O O O O O or
O/B O O or
O/B O or
O/B O/B
– L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– X2 X1 X2 X1 X2 – – – X1 X2 X1 X2 –
– – – P – – – – – –
– – – – – – – – Y2 W2
– – – – – – – – – Y2
I I
G G GH
P P P PP P P
N
O
F
Chronotherm IV
70-6627 • 35
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
A Terminal must be connected to the transformer common.B Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays.C Configure O/B (Select Models) in Installer Setup.D Optional LED indication activated with completed circuit on X1 and X2 terminals.E If separate Y1 and W1 terminals are required, install R8222D1014; (See page 12.)F When W2 is not used, configure W2 cycle rate to NC.G LED is energized when terminal is powered.H L terminal is powered continuously when thermostat is in Em. Ht. position.I Do not remove factory-installed jumper.J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.K Used on two-speed compressor heat pump applications.L Used on heat pumps that energize the compressor on both first stage cooling and first stage heating through a common Y
terminal.M Q674F1022 switching subbase available when separate first stage heat and cool terminals are required. See specific heat pump
manufacturer’s listing for hookup information.N P terminal on T8611R1000 only. Energized in heating and cooling modes; shown only when used.O Jumper W2 and Y2 if stage 2 heating and cooling are common.P To change fan operation in Emergency Heat mode, see page 9.
L1 (HOT)
L2
X1
X2
CHECKLED(YELLOW)
FAULT DETECTIONSWITCH
SWITCH TO R (POWER) SIDE OF SYSTEM TRANSFORMER
TO C/X
TO R X1
X2
CHECKLED(YELLOW)
SWITCHINGDEVICE
SWITCH IN SECONDARY OFSEPARATE TRANSFORMER
X1
X2
CHECKLED(YELLOW) FAULT DETECTION
SWITCH
SWITCH TO C (COMMON) SIDE OF SYSTEM TRANSFORMER
TO C/X
TO R
24 VAC
M13246
70-6627 • 36
AMANAModels: RHA1842A, RHA (24-42)A2A, RHA (48-60)A2A, RHA (36, 48, 60)A3A & A4A, RHD (18-24)A2A, RHD (30-60)A2A, RHE (18-24)A2A, RHE (30-60)A2A, RHA (36, 48, 60)A3B & A4B.
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1241 (D99458003) T8611R1083 (D9807605) T874R1194/Q674L1249
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
G1004
T8611
R1000
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A
A
I
A Not available on all models.B Do not remove factory-installed jumper.C Terminal must be connected to the transformer common.D If separate Y1 and W1 terminals are required, install R8222D1014.
See page 12.E Field-installed X2 to X jumper.
A
Common C
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveCool
C/O ValveHeat
Em. Heat
System Monitor/System Defrost
Multiple Aux.Heat Loads
LED Indication
Defrost
2nd StageCompressor
2nd StageCool
B
E
H
G
H H
H H H
M13172
B BB B B B
D
B
G G G G G
F L terminal is powered continuously when thermostat is in Em. Ht. position.G If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.H Configure O/B (select models) in Installer Setup.I When W2 is not used, configure W2 cycle rate to NC.J LED is energized when terminal is powered.
F J F J JJ F
I
Chronotherm IV
X or
X1 or
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
O O O O O O O or
O/B O O or
O/B O/B
B B B B B B B or
O/B B B or
O/B O/B
E E E E E E E E E E
L L L L L L L L
W3 W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
P – – – – – – – – –
– – – – – – – – – W2
– – – – – – – – – Y2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 37
AMERICAN STABILISTYPICAL THERMOSTATS AND SUBBASES: HP1, HP1EF, HP10EF, HP15
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T86
11G10
04
T8611
M70
08
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common E
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads
LED Indication
2nd Stage Compressor
M13142
A
H
D
F
G
A
H
CC
G
C
G G G G G
A
A
A
A
A Confgure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C LED is energized when terminal is powered.D L terminal is powered continuously when thermostat is in Em. Ht. position.E Terminal X (C) must be connected to transformer common.
F Optional CHECK LED on T8611G,M. Connect X to X1; jumper X2 to C. See Fig. 26 and 27.
G Field-installed W1 to Y1 jumper (provided).H Field-installed X2 to X jumper (provided).
DDCC
B
B
Chronotherm IV
C X X X C C C C C C
R R R R R R R R R R
Y1 Y Y1 Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
X L X1 L L L L L L
E E E E E E E E E E
– W3 W3 W3 – – – – – –
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 38
ARMSTRONG/AIR-EASE
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT8611R1182 T841A1597
T801
1R10
06T8
011R
1014
FunctionExisting
Terminals T841A
1712
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T861
1G20
02T8
611G
2028
PC89
00/
W89
00B1
002
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common E
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads D
LED Indication
Defrost
2nd StageCompressor
M13143
J
A
H
B
I
A
H
G
G
F
A
A
A
A
A
A Configure O/B (select models) in Installer Setup.B LED is energized when terminal is powered.C L terminal is powered continuously when thermostat is in Em. Ht. position.D Terminal is for multiple second stage loads such as contactors,
sequencers, or relays.E Terminal X or C must be connected to transformer common.F Do not remove factory-installed jumper.
BC
K
G When W2 is not used, configure W2 cycle rate to NC.H Field-installed X2 to X jumper (provided).I Optional CHECK LED on T8611G1004. See Fig. 26.J If separate Y1 and W1 terminals are required, install R8222D1014. See
page 12.K Available on T8611R1000 only.
FFFFFF F
T8611
R1000
T8611
G1004
C BCB B
ChronothermIV
X or
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E E
W3 W3 W3 W3 – – – – –
– – X2 X2 X1 X2 – – – X1 X2 –
P – – – P – – – – –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 39
ARCOAIRE/SNYDER GENERAL/COMFORTMAKERAYC, AYD, AYF
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1142 (1506726) T841A1159 (1505726) T874D1603T874G1592/Q674F1212 T874G1782/Q674J1175 (1506756) T874G1774/Q674J1175 (1505756)T874R1301/Q674L1181 (1505714) T874R1483/Q674L1538 (1505721) T874R1517/Q674L1538 (1506721)T874R1525/Q674L1181 T874R1574/Q674L1538 T874R1582/Q674L1538 (A02077)T874R1723/Q674L1702 (654958B07) T8611R1067 (1506-744) T8611R1075 (1505-744)T8300A1193/Q6300A
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common C
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads D
LED Indication
Defrost
2nd StageCompressor
M13144
K
A
G
I
F
A
G
L
A
A
H
A
A
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal X (C, X1) must be connected to transformer common.D Terminal is for multiple second stage loads such as contactors,
sequencers, or relays.E Do not remove factory-installed jumper.F Optional CHECK LED on T8611G1004. See Fig. 26.G Field-installed X2 to X jumper (provided).
I
J
H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.
I LED is energized when terminal is powered.J Available on T8611R1000 only.K If separate Y1 and W1 Terminals are required, install R8222D1014.
See page 12.L L terminal is powered continuously when thermostat is in Em. Ht. position.
or X1
EEEEEE E
H H H H H
B
LL II I
B
Chronotherm IV
X or
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W2 or
W1 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L or
X L X1 L L L L L L
E E E E E E E E E E
– W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
P – – – P – – – – –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 40
BARDModels: 24UHPQC, 30UHPQC, 42UHPQC, 48UHPQB, 48UHPQB-B, 48UHPQC-B, 60UHPQC-B
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT872N1036/Q672F1299T872N1164/Q672L1185T874N1024/Q674F1261
T874R1129/Q674L1181T874R1152/Q674L1207
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common E
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads D
LED Indication
2nd StageCompressor
M13145
I
A
J I
C
A
I J
A
A
A
A
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.D Terminal is for multiple second stage heating loads such as contactors,
sequencers, or relays.
B
G
E Terminal X (C, X1) must be connected to transformer.F Do not remove factory-installed jumper.G Optional CHECK LED on T8611G1004. See Fig. 26.H Field-installed X2 to X jumper (provided).I LED is energized when terminal is powered.J L terminal is powered continuously when thermostat is in Em. Ht. position.
or X1
Rc
C C C C C
FFFFFF F
II J
H H
B
ChronothermIV
C or
X X X X C C C C C C
Rh or R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B or
W1 B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 41
B.D.P. (BRYANT-DAY/NIGHT-PAYNE)
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T872G1166/Q672F1125T872G1174/Q672F1125T874G1261/Q674F1253T874G1451 (HH641502)/Q674F1212
T874J1010/Q674J1084 (34427DP124/P272-2471/34427DP126,P272-1879)T874J1010/Q674L1371 (34427DP124/P272-2471/34427DP125,P272-1878)T874R1004/Q674B1042T874R1335 (HH641501)/Q674L1405
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common F
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads D
Defrost
LED Indication
2nd StageCompressor
M13146
M
A
K
J
G
A
L
G G G G G G
A
A
C
E
A
A
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C If provided on original equipment.D Terminal is for multiple second stage heating loads such as contactors,
sequencers, or relays.E Model 545 typical. P terminal provided on T8611R1000 only.F Terminal X (C, X1, C1) must be connected to transformer common.G Do not remove factory-installed jumper.
B
H
H Optional CHECK LED on T8611G1004. See Fig. 26.I Field-installed X2 to X jumper (provided).J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.K LED is energized when terminal is powered.L Optional Check LED activated with completed circuit on X1 and X2 terminals.M L terminal is powered continuously when thermostat is in Em. Ht. position.
X1
M
LI
K
E
J J J J J
K KM
B
ChronothermIV
C1 or C X X X C C C C C C
R R R R R R R R R R
W1 or Y Y1 Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or O/B B B or O/B O/B
Y1 or O O O O O O O or
O/B O O or
O/B O/B
L or F L L L L L L L
X or E E E E E E E E E E
W3 W3 W3 W3
P – – – P – – – – –
X – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 42
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841C1009 (HH07AT180)T872G1075/Q672J1054 (HH07AT171/HH93AZ173)T872G1075/Q672L1052 (HH07PZ085/HH93AZ075A)T874C1166 (HH07AT160)T874D1272 (HH07AT162)T874G1055/Q674J1035 (HH07AT171/HH93AZ173A)T874G1055/Q674J1118 (HH07AT171/HH93AZ188)T874G1055/Q674L1041 (HH07AT171/HH93AZ175A)T874G1055/Q674L1397 (HH07AT171/HH93AZ185A)T874G1055/Q674P1005 (HH07AT171/HH93AZ169)T874G1071/Q674P1005 (HH07AT171/HH93AZ169)
CARRIERTYPICAL 50YQ, QT; 38QF, QN, QB, NPHPO1, 38YRA
T874G1121 (HH07AT161)T874G1717/Q674J1167T874H1070/Q674B1406 (HH07AT166/HH93AZ200)T874H1070/Q674C1322 (HH07AT166/HH93AZ199)T874H1088/Q674B1406 (HH07AT166/HH93AZ200)T874H1088/Q674C1322 (HH07AT166/HH93AZ199)T874J1002/Q674L1074 (HH07AT175/HH93AZ186)T874L1000/Q674E1270 (HH07AT176/HH93AZ189)T874L1018/Q674B1356 (HH07AT178/HH93AZ192)T874L1018/Q674C1264 (HH07AT178/HH93AZ193)
T874R1319/Q674B1281 (42QH400083/42QH400103)T874R1384/Q674L1439 (HH07AQ170/HH93AZ187)T874R1384/Q674L1579 (HH07AQ170/HH93AZ198)T874V1008/Q674R1003 (HH07AT177/HH93AZ190)T8085R1007/Q682L1002 (HH07AT075/HH93AZ159C)T8085R1023/Q682L1028 (HH07AT075C/HH93AZ159C)T8141A1147T8611G1046 (HH07AE001)T8611R1208 (HH07AX114)T8611R1216 (HH07AX115)
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common E
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads D
LED Indication
Defrost
2nd StageCompressor
M13147
I
A
H
B
G
A
H
CK
A
A
A
A
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C If provided on original equipment.D Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.E Terminal X (C) must be connected to transformer common.F Do not remove factory-installed jumper.
I
J
G Optional CHECK LED on T8611G1004. See Fig. 26.H Field-installed X2 to X jumper (provided).I LED is energized when terminal is powered.J Available on T8611R1000 only.K L terminal is powered continuously when thermostat is in Em. Ht. position.
FFFFF FF
II KKI
B
Chronotherm IV
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W1 or
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
F or
L L X1 L L L L L L
E E E E E E E E E E
– W3 W3 W3 – – – – – –
– – X2 X2 X1 X2 – – – X1 X2 –
P – – – P – – – – –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 43
CARRIERTYPICAL 38BQ C
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T874D1074/Q674F1030 (HHO7AT172/HH93AZ174)T874D1074/Q674F1063 (HH07AT172/HH93AZ181)
T8611
M20
17
T8611
M20
25
FunctionExisting
Terminals T8611
M70
08
T8511
M10
02
Chronotherm® IIIElectronic Replacement or Upgrade
Common A
Power
1st Stage Cool
1st Stage Heat
2nd Stage Heat
Fan
C/O ValveCool C
C/O ValveHeat
Em. Heat
Common 1st Stage Compressor C
System Monitor/System Defrost
LED Indication
2nd Stage Cool
M13148
C C
B
C
C
C
A Terminal must be connected to the transformer common.B For auxiliary heat LED indication, jumper X2 to W2 on Q674. For emergency
heat LED indication, jumper X2 to E.C Relay required (R8222B1067 typically) for T8511M, T8611M,
PC8900/W8900B1002 application. See page 9 for wiring diagram.
D Optional LED indication activated with completed circuit on X1 and X2 terminals.
E Configure O/B (select models) in Installer Setup.F Configure Y1/W1 terminal in installer setup.G L terminal is continuously energized in Em. Heat Mode.H LED is energized when terminal is powered.
PC89
00/
W89
00B10
02
B
Electromechanical
T874D
1165
/
Q674F
1022
B D D
CF
C CE CE CE
Chronotherm IV
C X1 C C C C
R R R R R R
Y1 Y1
W1 W1
W2 W2 W2 Y2 Y2 W2
G G G G G G
– O O O/B O/B O/B
– B B O/B O/B O/B
E E E E E E
– – Y Y1 Y1 Y1/W1
– – L L L L
X X2 X1 X2 – X1 X2 –
Y2 Y2 Y2 Y2 Y2 Y2
H G HG
C C C C
C C C C
70-6627 • 44
CARRIERUSES HONEYWELL Q674L1116 (HH93AZ171) SUBBASE
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T874D1264/Q674L1116 (HH07AT173/HH93AZ171)
FunctionExisting
TerminalsNOT
AVAIL
ABLE
T874D
1165
/
Q674F
1022
H
T8611
M70
08
T8511
M10
02
T8611
M20
17
T86
11M
2025
PC89
00/
W89
00B10
02
Electromechanical Chronotherm® IIIElectronic Replacement or Upgrade
Common B
Power
Compressor
1st Stg. Heat
2nd StageCompressor
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
2nd Stg. Cool
LED Indication
M13149
NO
T A
VAIL
AB
LE
NOTAV
AILABLE
NO
T A
VAIL
AB
LE
A Jumper Y2 to W2.B Terminal C (X1) must be connected to transformer common.C Optional CHECK LED on T8611M7008. Connect L to X1, jumper X2 to C. D Configure O/B (select models) in Installer Setup.E In this application, auxiliary heat and compressor two are both connected
to terminal Y1.F For second stage compressor LED indication, jumper X2 to Y2 on Q674.
For emergency heat LED indication, jumper X2 to E. For system monitor LED indication, connect L to X2.
G Both first stage heat and cool are connected to Y or Y1/W1 terminal.H When subbase system switch is in AUTO position, equipment operates in
cool mode only.I LED is energized when terminal is powered.J L terminal is powered continuously when thermostat is in Em. Ht. position.
E
G
A A
D
G
D
A
C
F
F
G
I J
D
I
DD
D
J
C
C X1 C C C C
R R R R R R
Y Y1 Y Y1 Y1 Y1/W1
– W1 – – – –
Y1 W2 W2 Y2 Y2 W2
G G G G G G
– B B O/B O/B O/B
O O O O/B O/B O/B
L X2 L L L L
E E E E E E
– Y2 Y2 – – Y2
– – X1 X2 – X2 –
Chronotherm IV
70-6627 • 45
CARRIERTWO-SPEED COOLING COMPRESSORS
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T874S1001/Q674F1501 (HH07AT201/HH93AZ215)
T8611T7000 (HH07AX112)T8611T7018 (HH07AX113)
FunctionExisting
Terminals
NOTAV
AILABLE
NOTAV
AILABLE
T8611
M70
08
PC89
00/
W89
00B10
02
Electromechanical Chronotherm® III
Electronic Replacement or Upgrade
Common A
Power
1st Stg.Compressor
2nd Stg.Compressor
2nd Stg.Heat Relay
Fan
C/O ValveCool
C/O ValveHeat
System Monitor/System Defrost
EM. Heat
Multiple Aux. Heat Loads
M13150
NO
T A
VAIL
AB
LE
NOTAV
AILABLE
NO
T A
VAIL
AB
LE
A Terminal C must be connected to transformer common.B Configure O/B in Installer Setup.C LED is energized when terminal is powered.
B
B
NO
T A
VAIL
AB
LE
T8511
M10
02
T8611
M20
17
T86
11M
2025
C
B
BB
B
D CD
D L terminal is powered continuously when thermostat is in Em. Ht. position.E If 2nd stage heat is auxiliary (electric resistive), connect auxiliary stage
to W3.
C C C C C
R R R R R
Y Y Y1 Y1 Y1/W1
Y2 Y2 Y2 Y2 Y2
W2 W2 W2
G G G G G
O O O/B O/B O/B
– B O/B O/B O/B
L L L L L
E E E E E
– W3 W3 W3 Aux.
EE
Chronotherm IV
70-6627 • 46
CRISPAIRE/MARVAIR
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1308
Y594R
1797
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common A
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
2nd StageCompressor
M13151
Y594G
1633
E
D
F
D
E
D D D
C C C C
E
E
DD
E
E
A Terminal X or C must be connected to transformer common.B When W2 is not used, configure W2 cycle rate to NC.C Do not remove factory-installed jumper.D To eliminate automatic fan in emergency heat mode, connect switching relay
as shown on page 9.
C
E Configure O/B (select models) in Installer Setup.F LED is energized when terminal is powered.G L terminal is powered continuously when thermostat is in Em. Ht. position.
DD DDD
B
F GGF FGF F
B
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
A L L L L L L L L L
E E E E E E E E E E
– – – – – – – – – W2
Chronotherm IV
70-6627 • 47
ECONAR
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT874G1915/Q674F1212 T874R1921/Q674L1207
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common E
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads D
LED Indication
2nd StageCompressor
M13152
A
H
G
I
A
J
C
J
F
A
A
A
A
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C If provided on original equipment.D Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.E Terminal X (C) must be connected to transformer common.F Do not remove factory-installed jumper.G LED is energized when terminal is powered.
GL
B
H Field-installed X2 to X jumper (provided).I Optional CHECK LED on T8611G1004. See Fig. 26.J Optional LED indication activated with completed circuit on X1 and X2
terminals.K If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.L L terminal is powered continuously when thermostat is in Em. Ht. position.
F FFFFF
L GG L
K K K K K K
B
Chronotherm IV
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 48
ECONAR
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT874G1915/Q674F1410
T8011
R1006
T8011
R1014
FunctionExisting
TerminalsNOT
AVAIL
ABLE
T8611
R1000
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
Common A
Power
Compressor
1st Stg. Heat
Aux. Heat
Fan
C/O ValveHeat
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
C/O ValveCool
LED Indication
2nd StageCompressor
M13153
G
B
G
D
E
F
G
G
G
G
A Terminal X (C) must be connected to transformer common.B Remove factory-installed Y1 (Y) to W1 jumper.C Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.D When W2 is not used, configure W2 cycle rate to NC.
E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.
F Install R8222D1014 (see page 12) for separate Y1 and W1 terminals.G Configure O/B (select models) in Installer Setup.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.
B B B B B B
E E E E E
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
D
H I H I H HH I
X X X C C C C C C
R R R R R R R R R
Y Y Y1 Y1 Y Y1 Y Y1 Y1/W1
W1 W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G
B B B B B B or
O/B B B or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E
W3 W3 W3
O O O O O O or
O/B O O or
O/B O/B
– X2 X2 – – – – X1 X2 –
– – – – – – – – W2
Chronotherm IV
NO
T A
VAIL
AB
LE
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 49
ENERSTAT
Common E
Power
1st StageCompressor
1st Stage Heat
2nd StageAux. Heat
3rd StageAux. Heat
Fan
2nd StageComp.
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads D
Remote Sensor
LED Indication
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T
8611
G1004
T86
11M
7008
T84
11R10
02
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to HP terminal.C If provided on original equipment.D Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.E Terminal X (C) must be connected to transformer common.
M13173
F Optional CHECK LED on T8611G,M. See Fig. 26 and 27.G Do not remove factory-installed jumper.H Field-installed X2 to X jumper (provided).I When W2 is not used, configure W2 cycle rate to NC.J T8611M7008 Model.
B
J
C
FHH
AAA
AAA
GGGGGG
C
C
T8511
G1021
T8511
G1047
T8611
M20
17
T8611
M20
25
I
ChronothermIV
X X X X C C C C C C
R R R R R R R R R R
HP1 or
HP Y Y1 Y1 Y1 or
Y Y Y1 Y Y1 Y/W1
– – W1 W1 W1 W1 W1 W1 – –
– W2 W2 W2 W2 W2 W2 W2 W2 Aux.
– – – – W3 – – – W3 –
G G G G G G G G G G
HP2 Y2 Y2 Y2
B B B B B B B or
O/B B O/B O/B
O O O O O O O or
O/B O O/B O/B
– – L X1 L L L L L L
– E E E E E E E E E
– W3 W3 W3 – – – – – –
– – – – – – – – – –
– – X2 X2 X1 X2 – – – X1 X2 –
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 50
EVCON/COLEMANMODELS: 3200, 3300 A
T8011
R1006
T8011
R1014
A
FunctionExisting
Terminals T8611
R1000
A T8411
R1002
T8411
R1028
A
Chronotherm® III Electronic Replacement or Upgrade
Common B
Power
1st Stg. Heat
Compressor
Aux. Heat
Fan
C/O ValveCool
C/O ValveHeat
System Monitor/System Defrost A
EM. Heat A
LED Indication
M13203
(10)
(3)
(5)
(3)
(4)
(6)
(2)
(1)
(5)CCC
A
A
A R8222B1067 relays required to operate system. Equipment requires normally energized emergency heat. See page 10 for wiring diagram.
B Terminal must be connected to the transformer common.
C Remove factory-installed jumper on Model 3200. Do not remove factory-installed jumper on Model 3300.
BLCK C C C
RED R R R
W W1 W1 W1
Y Y1 Y1 Y1
W2 W2 W2 W2
G G G G
B O O O
– B B B
E L L L
A E E E
X – – –
70-6627 • 51
EVCON/COLEMANMODELS: 3200, 3300, 3360, 3400, 6000, 6500 AD
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T8300A1029/Q6300A1029 (3300-382/3300-383)
Common E
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat D
Multiple Aux.Heat Loads F
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A See Coleman wholesaler to obtain replacements for these thermostats. If notpossible, basic functions can be provided as shown.
B Configure O/B (select models) in Installer Setup.C Optional LED indication activated with completed circuit on X1 and
X2 terminals.D R8222B1067 relays required to operate system. Equipment requires normally
energized emergency heat. See page 10 for wiring diagram.
M13204
E Terminal must be connected to the transformer common.F Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.G Do not remove factory-installed jumper.H Field-installed X2 to X (C) jumper.I When W2 is not used, configure W2 cycle rate to NC.
GGGGG
CC
B
I
B B
I
H
D
(3)
(5)
(4)
(2)
(1)
(6)
BB B
G
BLCK X X X C C C C C C
RED R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
V O O O O O O or
O/B O O or
O/B O/B
– – L – L L L L L L
A E E E E E E E E E
– W3 W3 W3 – – – – – –
X – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
Y2 – – Y2 – – – – – Y2
G
C
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 52
EVCON/COLEMANTYPICAL 3700, 3900, 4400, 6500, 7100, 9200 (3600 SERIES THERMOSTAT) DIRECT REPLACEMENTS
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T874G1501 (3600-375)/Q674F1378T874G1576 (3600-373)/Q674F1402T874R1368 (3600-368)/Q674L1421
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1308
Y594R
1797
Y594G
1633
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal X (C) must be connected to transformer common.B When W2 is not used, configure W2 cycle rate to NC.C Do not remove factory-installed jumper.D To eliminate automatic fan in emergency heat mode, connect switching
relay as shown on page 9.
Common A
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
2nd StageCompressor
D
M13157
B
D
E Configure O/B (select models) in Installer Setup.F LED is energized when terminal is powered.G L terminal is powered continuously when thermostat is in Em. Ht. position.
CCCC
E E E
E E E
D D D DD
C
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L L L
E E E E E E E E E E
– – – – – – – – – W2
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
D D D DD
B
ChronothermIV
G G G F FFF F F
70-6627 • 53
EVCON/COLEMANTYPICAL 3700, 3900, 4400, 6500, 7100, 9200 (3600 SERIES THERMOSTAT) ALTERNATIVE REPLACEMENTS
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T8611R1059 (3600A-381)
Common D
Power
Compressor
1st Stage Heat
Aux. Heat
Fan
Defrost
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
EM. Heat
2nd StageCompressor
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B LED is energized when terminal is powered.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal X (C) must be connected to transformer common.E Do not remove factory-installed jumper.F Optional CHECK LED on T8611G1004. See Fig. 26.
M13174
G Field-installed X2 to X jumper (provided).H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.I L terminal is powered continuously when thermostat is in Em. Ht. position.J Defrost is available on T8611R1000 only.K Models 3700, 3900 and 6500 require connection of O and B terminals.L When W2 is not used, configure W2 cycle rate to NC.
I
K
E
B
FGG
J
H
AAA
EEEEEE
L
K
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
I BI BB B
L
ChronothermIV
H H H H H
C/X or
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B B B B
O O O O O O O or
O/B O O or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E E
– W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
P – – – P – – – – –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 54
FEDDERS
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T872C/Q672L1102T874C/Q674L1090T874D1249
T874D1462/Q674E1205 (THTX-220-AOHB; 88-58-00550-001)T874R1269/Q674L1066 (THTX-120-HEHB; 88-58-00540-001)T874R1343/Q674L1413 (THTX-120-HEHC; 88-58-00560-001)
T8011
R1006
T8011
R1014
FunctionExisting
TerminalsNOT
AVAIL
ABLE
T8611
R1000
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal X (C) must be connected to transformer common.B Remove factory-installed Y1 (Y) to W1 jumper.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers or
relays.D Install R8222D1014 (see page 12) if separateY1 and W1 terminals are
required.
Common A
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
G
M13158
B
A
E Field-installed X2 to X (C) jumper.F Configure O/B (select models) in Installer Setup.G When W2 is not used, configure W2 cycle rate to NC.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.
BBBB
F F F
F F F
A A A
D
A A
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
G
BB
EE
C X X C C C C C C
Rc Rh or
R R R R R R R R R
Y1 or
Y Y Y1 Y1 Y Y1 Y Y1 Y1/W1
W1 W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G
– B B B B B or
O/B B B or
O/B O/B
– O O O O O or
O/B O O or
O/B O/B
L or
Z L X1 L L L L L L
K E E E E E E E E
– W3 W3 – – – – – –
– X2 X2 – – – – X1 X2 –
– – – – – – – – W2
I HHIHIHH
ChronothermIV
NO
T A
VAIL
AB
LE
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 55
FLORIDA HEAT PUMPTYPICAL “LT” UNITS
Common E
Power
Compressor
1st Stage Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B LED is energized when terminal is powered.C Terminal is for multiple second stage heating loads such as contactors,
sequencers, or relays.D E-W2 jumper required unless emergency heat function is wired separately.E Terminal X (C) must be connected to transformer common. M13175
F Do not remove factory-installed jumper.G Optional CHECK LED on T8611G1004. See Fig. 26.H Field-installed X2 to X jumper (provided).I L terminal is powered continuously when thermostat is in Em. Ht. position.J When W2 is not used, configure W2 cycle rate to NC.
B
F
D D D
GHH
AAA
FFFFFF
B
D
I
AAA
D D DD D
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
J
BIBB I
J
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
W or
O O O O O O O or
O/B O O or
O/B O/B
X L X1 L L L L L L
– E E E E E E E E E
– W3 W3 W3 – – – – – –
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 56
FRIEDRICH
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1324 (AT12124)
Common E
Power
Compressor
1st Stage Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B LED is energized when terminal is powered.C Terminal is for multiple second stage heating loads such as contactors,
sequencers, or relays.D If multiple auxiliary heat loads are used, connect to W2 (Aux W8900)
terminal. M13179
E Terminal X (C) must be connected to transformer common.F Do not remove factory-installed jumper.G Optional CHECK LED on T8611G1004. See Fig. 26.H Field-installed X2 to X jumper (provided).I L terminal is powered continuously when thermostat is in Em. Ht. position.J When W2 is not used, configure W2 cycle rate to NC.
B
F
GHH
AAA
FFFFFF
B
AAA
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
D D D DD D
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
J
I B IIB
J
B
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 57
GENERAL ELECTRIC
TYPICAL THERMOSTATS AND SUBBASES — CUSTOMER PART NUMBER3AAT86B1A1 3AAT80A1A1 3AAT80B1A13AAT83F1B2 3AAT83E12A1
Common A
Power
Compressor
1st Stage Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
OutdoorSensor
Outdoor Thermostat
LED Indication
2nd StageCompressor
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1555
Y594R
1763
Y594G
1161
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal X (C) must be connected to transformer common.B Tape off. Electric thermostat replaces outdoor reset with improved zero droop
performance.C Do not remove factory-installed jumper.D Optional CHECK LED on T8611G1004. See Fig. 26.E Configure O/B (select models) in Installer Setup. M13180
F Optional LED indication activated with completed circuit on X1 and X2 terminals.
G LED is energized when terminal is powered.H L terminal is powered continuously when thermostat is in Em. Ht. position.I When W2 is not used, configure W2 cycle rate to NC.
C
D
EEE
CCCC
F
EEE
B B B BB B
C or
B B B B C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W1 or
W W W W W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– – – – B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
F F F F L L L L L L
B – – – – – – – – –
T T T T
W2 or
X2 X2 X2 X2 E E E E E E
– – – – X1 X2 – – – X1 X2 –
– – – – – – – – – W2
I
G H GH GG HG
I
G
ChronothermIV
70-6627 • 58
GENERAL ELECTRIC
Common B
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
OutdoorSensor
OutdoorThermostat
Defrost Control
Multiple Aux.Heat Loads D
LED Indication
2nd StageCompressor
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Tape off. Outdoor reset not provided with TRADELINE® replacement thermostats.
B Terminal X (C) must be connected to transformer common.C Tape off. Electronic thermostat replaces outdoor reset with improved zero droop
performance.D Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.E Do not remove factory-installed jumper.
M13181
F Optional CHECK LED on T8611G1004. See Fig. 26.G Field-installed X2 to X jumper (provided).H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.I Configure O/B (select models) in Installer Setup.J When W2 is not used, configure W2 cycle rate to NC.K LED is energized when terminal is powered.L L terminal is powered continuously when thermostat is in Em. Ht. position.
E
III
EEEE
III
C C C CC C
F
J
A AA
GG
EE
C or
B X X X C C C C C C
R R R R R R R R R R
Y Y Y1 Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W1 or
W W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
F or
L L X1 L L L L L L
– – – – – – – – – –
T
E or
X2 E E E E E E E E E
– – – – P – – – – –
W2 W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
H H HH H
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
J
H
L K L KL KK K
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 59
GEO SYSTEM
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT841A1118
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Terminal X (C) must be connected to transformer common.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal must be connected to the transformer common.E Do not remove factory-installed jumper.F Optional CHECK LED on T8611G1004. See Fig. 26. M13182
G Field-installed X2 to X jumper (provided).H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.I L terminal is powered continuously when thermostat is in Em. Ht. position.J LED is energized when terminal is powered.K When W2 is not used, configure W2 cycle rate to NC.
E
AAA
EEEE
AAA
H
F
K
GG
EE
H H HH H
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
K
I J I JI JJ J
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 60
HEAT CONTROLLER/COMFORT AIR
TYPICAL THERMOSTATS AND SUBBASES—HONEYWELL MODEL NUMBERT874G1469/Q674F1345
Common E
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to Y terminal.C Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.D If provided on original equipment.E Terminal X (C) must be connected to transformer common.
M13217
F Do not remove factory-installed jumper.G When W2 is not used, configure W2 cycle rate to NC.H Optional LED indication activated with completed circuit on X1 and
X2 terminals.I LED is energized when terminal is powered.J L terminal is powered continuously when thermostat is in Em. Ht. position.
F
AAA
FFFF
AAA
H
D
FF
B
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
G
G
C X X X C C C C C C
R R R R R R R R R R
W1 Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
Y1 O O O O O O or
O/B O O or
O/B O/B
X L L L L L L L
E E E E E E E E E E
– W3 W3 W3 – – – – – –
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
H
IIJIJJ
H
I
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 61
HEATWAVE/SOUTHWEST MFG.
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT872G1232/Q672F1224 T874G1105/Q674F1097 T874G1105/Q674F1170
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
Defrost
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to Y terminal.C Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.D Terminal X (C) must be connected to transformer common. M13218
E Do not remove factory-installed jumper.F Optional LED indication activated with completed circuit on X1 and
X2 terminals.G When W2 is not used, configure W2 cycle rate to NC.
E
AAA
EEEE
AAA
F
E
B
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
G
E
F
G
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
– – L – L L L L L L
E E E E E E E E E E
– W3 W3 W3 – – – – – –
X2 X1 X2 X1 X2 – – – X1 X2 –
B – – – – – – – – –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
F
70-6627 • 62
HONEYWELLUNIVERSAL
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT841A1084T841A1282T841A1290T841A1340T841A1563T872G1000/Q672F1018T872G1224/Q672F1208
T872R1008/Q672B1046T872R1057/Q672L1037T874G1113/Q674L1041T874G1139/Q674AT874G1212/Q674F1238T874G1246/Q674F1212T874G1246/Q674F1410
T874G1444/Q674J1027T874G1626/Q674F1436T874R1004/Q674B1042T874R1004/Q674B1109T874R1061/Q674L1082T874R1152/Q674L1207T874R1285/Q674L1157
T874R1350/Q674L1181T874R1376/Q674L1207T874R1392/Q674L1447T874R1475/Q674L1520T874R1491/Q674L1553
Common D
Power B
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat I
C/O ValveCool I
System Monitor
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B For best performance, use a NEMA standard transformer.C Terminal is for multiple second stage heating loads such as contactors,
sequencers, or relays.D Terminal X (C) must be connected to transformer common.E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.F Do not remove factory-installed jumper. M13186
G Optional CHECK LED. See Fig. 26.H Optional LED indication activated with completed circuit on X1 and
X2 terminals.I Thermostat will have connection to either O or B terminal, not both.J LED is energized when terminal is powered.K L terminal is powered continuously when thermostat is in Em. Ht. position.L When W2 is not used, configure W2 cycle rate to NC.
F
AAA
FFFF
AAA
E
GH
H
FF
E E EE E
F
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
K J K JK JJ
L
L
X X X X C C C C C C
R R R R R R R R R R
Y1 or
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W or
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L1 or
X1 or
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3 –
X2 – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 63
HONEYWELLSEPARATE FIRST STAGE HEAT AND COOL TERMINALS
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT872A-D/Q672F1000T872A-D/Q672F1026
T872A-D/Q672F1042T872C/Q672F1075
T874A-D/Q674F1006T874A-D/Q674F1022
T874A-D/Q674F1048T874A-D/Q674F1089
T874R1616/Q674L1587T8085A/Q682B1029
T8300A/Q6300AT8300B/Q6300B
Common A
Power
1st StageCool
1st StageHeat
2nd StageHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
EM. Heat
Defrost
2nd StageCool
Multiple Aux.Heat Loads F
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals
NOTAV
AILABLE
T8611
R1000
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal X (C) must be connected to transformer common.B If provided on original equipment.C When W2 is not used, configure W2 cycle rate to NC.D If separate Y1 and W1 terminals are required, install R8222D1014; see page 12.E Select O/B (select models) in Installer Setup. M13187
F Terminal is for multiple second stage heat loads such as contactors, sequencers, or relays.
G Remove factory-installed jumper for independent first stage heat and cooloperation.
G
EEE
GGGG
EEE
B
C
G
B
B
B
D
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
C
G
NO
T A
VAIL
AB
LE
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
X X X C C C C C C
R R R R R R R R R
Y1 Y1 Y1 Y1 Y Y1 Y Y1 Y1/W1
W1 W1 W1 W1 W1 W1 W1 W1
W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G
B B B B B B or
O/B B B or
O/B O/B
O O O O O O or
O/B O O or
O/B O/B
X2 or
L X1 L L L L L L
Z or
E E E E E E E E E
– – – P – – – – –
Y2 – – – – – – – Y2
– W3 W3 – – – – – –
– X2 X1 X2 – – – – X1 X2 –
– – – – – – – – W2
– – – – – – – – Y2
70-6627 • 64
HONEYWELLRETAIL HEAT PUMP THERMOSTATS
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERCT70A1001
CT8611R1006
Common D
Power B
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
EM. Heat
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B For best performance, use a NEMA standard transformer.C If separate Y1 and W1 terminals are required, install R8222D1014; see page 12.D Terminal X (C) must be connected to transformer common. M13188
E When W2 is not used, configure W2 cycle rate to NC.F Do not remove factory-installed jumper.G LED is energized when terminal is powered.H L terminal is powered continuously when thermostat is in Em. Ht. position.
AAA
AAA
E
C
X X X X C C C C C C
R R R R R R R R R R
Y1 Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
FFFFFFFF
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
E
ChronothermIV
GGG HHHG
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 65
HONEYWELLMODELS USING OUTDOOR RESET
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT874R1566/Q674L1538 T841A1068 T874R1053/Q674L1140
Common AB
Power
Compressor
1st StageHeat
Aux. Heat
Fan
OutdoorThermistor
OutdoorThermostat
CoolingChangeover
System Monitor
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1555
Y594R
1763
Y594G
1161
T8611
G1004
T8611
R1000
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A For best performance, use a NEMA standard transformer.B Terminal B (C) must be connected to transformer common.C Configure O/B (select models) in Installer Setup.D Leave factory-installed jumper in place.
M13189
E No connection. Tape off.F When W2 is not used, configure W2 cycle rate to NC.G LED is energized when terminal is powered.H L terminal is powered continuously when thermostat is in Em. Ht. position.
CCC
EEE
DDDDD
EE E
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
F
GGGHG HHGG
B B B B C C C C C C
R R R R R R R R R R
Y Y Y Y Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W W W W W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
T T T T
X2 X2 X2 X2 E E E E E E
O O O O O O O or
O/B O O or
O/B O/B
F F F F L L L L L L
– – – – – – – – – W2
– – – – – – – – – Y2
F
ChronothermIV
70-6627 • 66
HONEYWELLHEATING CHANGEOVER
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT872N1002/Q672F1133 T872N1028/Q672F1216T874N1016/Q674F1220 T874N1040/Q674F1261
Common E
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple second stage heating loads such as contactors,
sequencers, or relays.D Leave factory-installed jumper in place.E Terminal X (C) must be connected to transformer common.F If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.M13190
G Optional CHECK LED on T8611G1004. See Fig. 26.H Field-installed X2 to X jumper (provided).I Optional LED indication activated with completed circuit on X1 and
X2 terminals.J LED is energized when terminal is powered.K L terminal is powered continuously when thermostat is in Em. Ht. position.
111
FFF
DDDDD
FF F
111
I
DD
GI
B
H
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
B
X X X X C C C C C C
R R R R R R R R R R
Y1 or
Y or
C Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
W1 B B B B B B or
O/B B B or
O/B O/B
– O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E or
K E E E E E E E E E
W3 W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
JJJKK KJ
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 67
HONEYWELLUNIVERSAL THERMOSTATS
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT874R1491/Q674L1553 T874G1600/Q674F1428 T8085R1015/Q682L1010T8300A1003/Q6300A1010 T8300A1011/Q6300A1002 T8300A1045/Q6300A1002T8300A1029/Q6300A1036 T8300A1037/Q6300A1044 T8300B1001/Q6300B1000T8611R1000 T8611G1004
T8011
R1006
T8011
R1014
Function Q6300
A1010
T8611
R1000
T8611
R1158
T8611
G1004
PC89
00/
W89
00B10
02
Existing Control Terminal DesignationElectronic Replacement or Upgrade
A Remove factory-installed jumper for independent first stage heat and cooloperation.
B Terminal must be connected to the transformer common.C Configure O/B (select models) in Installer Setup.D Optional LED indication activated with completed circuit on X1 and
X2 terminals.
Common B
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/Sytem Defrost
Em. Heat
MultipleHeat Loads
LED Indication
Defrost
2nd StageCompressor
2nd StageCool I
M13244
E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.
F When W2 is not used, configure W2 cycle rate to NC.G LED is energized when terminal is powered.H L terminal is powered continuously when thermostat is in Em. Ht. position.I If Y2 is used, T8611M may be used as replacement.
A AAA
C
F
C
C C
E
F
D
EE EE
H
E
H GH G
T8611
G2002
T8611
G2028
H
Q6300
A1002
A
D
X X C B C C C C
R R R R R R R R
Y Y Y1 Y1 Y Y Y1 Y1/W1
– W1 W1 W1 – W1 W1 –
W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G
B B B H B B B or
O/B O/B
O O O O O O O or
O/B O/B
L L L L L L L L
E E E E E E E E
– –
– – – – X1 X2 – X1 X2 –
P – P – – – – –
– – – – – – – W2
– – – – – – – Y2
Chronotherm IV
70-6627 • 68
INTERCITY PRODUCTS/HEIL QUAKER/WHIRLPOOL/TEMPSTAR
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T8611R1190 (HQ1149375HW)
T874R1947/Q674L1819 (HQ1149406HW/HQ1149407HW)
T8011
R1006
T8011
R1014
FunctionExisting
TerminalsNOT
AVAIL
ABLE
T8611
R1000
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal X (C) must be connected to transformer common.B Remove factory-installed Y1 (Y) to W1 jumper.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers or
relays.D Configure O/B (select models) in Installer Setup.E If multiple auxiliary heat loads are used, connect to W2 (W8900B) terminal.
Common A
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
Defrost
2nd StageCompressor
G
M13159
B
F If separate Y1 and W1 terminals are required, install R8222D1014. See page 12.
G When W2 is not used, configure W2 cycle rate to NC.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.
BBBB
D D D
D D D
F
EE
X X X C C C C C C
R R R R R R R R R
Y Y Y1 Y1 Y Y1 Y Y1 Y1/W1
W1 W1 W1 W1 W1 W1 W1 W1
W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G
B B B B B B or
O/B B B or
O/B O/B
O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E
W3 W3 W3
– X2 X1 X2 – – – – X1 X2 –
P – – P – – – – –
– – – – – – – – W2
EE EE
B B
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
II IH HHH
G
ChronothermIV
NO
T A
VA
ILA
BL
E
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 69
INTERCITY PRODUCTS/HEIL QUAKER/WHIRLPOOL/TEMPSTAR
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1134 (HQ1147021HW)T841A1175 (HQ1147004HW)T841A1589 (HQ1149480HW)T872R1172/Q672L1193T874G1246/Q674F1212T874R1137/Q674L1132 (HQ711597HW/711598)
T874R1673/Q674L1132 (HAXB004TW01/711598)T874R1749/Q674F1329 (TAXB004TW01/712005)T874R1749/Q674L1132 (TAXB004TW01/711598)T874R1731/Q674L1132 (HQ1147909HW/711598)T8141A1022T8141A1030
T8141A1048T8141A1055T8141A1139T8300A1136/Q6300A1119
(HQ713669HW)T8611G1020 (HQ713669HW)
Common E
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
Defrost
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to Y terminal.C Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.D L terminal is powered continuously when thermostat is in Em. Ht. position.E Terminal X (C) must be connected to transformer common. M13185
F Do not remove factory-installed jumper.G Optional LED indication activated with completed circuit on X1 and
X2 terminals.H When W2 is not used, configure W2 cycle rate to NC.I LED is energized when terminal is powered.
F
AAA
FFFF
AAA
G
F
B
C or
B X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 or
W W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
X or
L L L L L L L L
X or
E E E E E E E E E E
W3 W3 W3 W3 – – – – – –
X1 X2 – X2 X1 X2 X1 X2 – – – X1 X2 –
P – – – P – – – – –
– – – – – – – – – W2
– – – – – – – – – Y2
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
F
III DDD
G
I
H
H
G
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 70
INTERTHERM/MILLER/NORDYNE
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
Em. Heat
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1308
Y594R
1797
Y594G
1633
T8611
R1000
T86
11G10
04
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C LED is energized when terminal is powered.D Terminal X (C) must be connected to transformer common.E Do not remove factory-installed jumper.
M13191
F Optional LED indication activated with completed circuit on X1 and X2 terminals.
G L terminal is powered continuously when thermostat is in Em. Ht. position.H To eliminate auto fan in emergency heat mode, add switching relay as
shown on page 9.
111
C
EEEEE
CC
111
B
CGG CG
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
W1 B B B B B B or
O/B B B or
O/B O/B
– O O O O O O or
O/B O O or
O/B O/B
Z L L L L L L L L L
K E E E E E E E E E
– – – – X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
HH
C
HHHHH
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
B
F
ChronothermIV
70-6627 • 71
INTERTHERM/MILLER/NORDYNE
Common C
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
Em. Heat
Multiple Aux.Heat Loads D
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal X (C) must be connected to transformer common.D Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.E Do not remove factory-installed jumper.F Optional CHECK LED on T8611G1004. See Fig. 26.
M13192
G Field-installed X2 to X jumper provided.H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.I Optional LED indication activated with completed circuit on X1 and
X2 terminals.J L terminal is powered continuously when thermostat is in Em. Ht. position.K LED is energized when terminal is powered.
111
HHH
EEEEE
HH H
111
I
EE
I F
B
JK
II
G
IIIII
KKKJ J
X or
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
X2 or
X1 – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
B
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 72
INTERTHERM/MILLER/NORDYNE
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1555
Y594R
1763
Y594G
1161
T8611
G1004
T8611
R1000
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A For best performance, use a NEMA rated transformer.B Terminal B (C, X) must be connected to transformer common.C Configure O/B (select models) in Installer Setup.D Leave factory-installed jumper W1-Y1 (Y) in place.E Tape off. Electronic thermostat replaces outdoor reset with improved zero
droop performance.
Common A
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
OutdoorThermistor
Em. Heat F
C/O ValveCool
System Monitor/System Defrost
M13160
D
F To eliminate auto fan in EM. Heat mode, see page 9.G Use Aux terminal for Auxiliary heat and configure W2 cycle rate to NC.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.
DDDD
C C C
B
EE EE E
X B B B C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W2 W W W W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
T T T T
K X2 X2 X2 E E E E E E
W1 O O O O O O or
O/B O O or
O/B O/B
Z F F F L L L L L L
E
FF FF F FFF F
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
G
II IH H HH H
ChronothermIV
H
70-6627 • 73
JANITROL/TAPPAN
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T872G1109/Q672F1117 (080-13708-52/080-13708-53)
T874G1147/Q674F1139
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both First stage heat and cool are connected to Y terminal.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal must be connected to the transformer common.E Do not remove factory-installed jumper.
Common D
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd Stage Cool
M13223
F Optional LED indication activated with completed circuit on X1 and X2 terminals.
G Thermostat will have connection to either O or B terminal, not both.H If multiple auxiliary heat loads are used connect to W2 (Aux W8900B)
terminal.I When W2 is not used, configure W2 cycle rate to NC.
EEEE
A A A
A A A
E
H HH HH H
G
B
E
G
F
E
I
I
ChronothermIV
F
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
OTC or
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B or
W1 B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
– – L – L L L L L L
E E E E E E E E E E
– W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
Y594R
1425
Y594G
1419
Y594G
1476
F
70-6627 • 74
KEEPRITE
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT874R1814/Q674L1132
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.M13193
D Terminal X (C,B) must be connected to transformer common.E Leave factory-installed jumper in place.
111
B
EEEEE
111
B
EE
B X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
– – L – L L L L L L
X E E E E E E E E E
– W3 W3 W3 – – – – – –
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 75
LENNOXTYPICAL HP6 (ALTERNATE)
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT872G1026/Q672E1019 T872G1067/Q672E1142 (P-8-11222)
T872R1040/Q672B1202 (P-8-11221) T874R1024/Q674B1160T874G1014/Q674E1148 (24F5801) T874G1154/Q674E1015T874G1022/Q674E1148 (24F5701)
T8011
R1006
T8011
R1014
Function Existing Terminals T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to M terminal.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers or
relays.D Terminal X (C) must be connected to transformer common.E Field-installed E to W2 (Aux) jumper required.F LED is energized when terminal is powered.
Common D
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indicator
2nd StageCompressor
M13161
J
G L terminal is powered continuously when thermostat is in Em. Ht. position.H If separate Y1 and W1 terminals are required, install R8222D1014; see
page 12.I If separate transformers are used, replace with one 75 VA transformer as
shown on page 78.J When replacing models with one compressor terminal (M), jumper Y1 to W1.K When W2 is not used, configure W2 cycle rate to NC.
JJJJ
A A A
A A A
K
HB
EEE EE EE
J J
I
E
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
GG GF FFF
K
ChronothermIV
I
X2 –
– – X X C C C C C C
V R V/VR V/VR R R R R R R R R
M W1 M1 M Y1 Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – R – W1 W1 W1 W1 W1 W1 W1 –
Y W2 Y Y W2 W2 W2 W2 W2 W2 W2 Aux.
F G F G G G G G G G G G
– – – – B B B B B
or O/B B B
or O/B O/B
R Y1 – R O O O O O or
O/B O O or
O/B O/B
– – – – L – L L L L L L
E – – – E E E E E E E E
– –
– – – W3 – – – – – –
– –
– – – X1 X2 X1 X2 – – – X1 X2 –
– –
– – – – – – – – – W2
Y594R
1425
Y594G
1419
Y594G
1476
or or or
70-6627 • 76
LENNOXHP6
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841B
1000
T874C
1018
Q674B
1075
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal X (C) must be connected to transformer common.B Configure O/B (select models) in Installer Setup.C If separate Y1 and W1 terminals are required, install R8222D1014; see
page 12.
Common A
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveCool
SystemMonitor/System Defrost
Em. Heat
2nd StageCompressor
M13162
E
D If separate transformers are used, replace with one 75 VA transformer as shown on page 78.
E When replacing models with one compressor terminal, jumper Y1 to W1.F Field-installed E to W2 (Aux) jumper required.G When W2 is not used, configure W2 cycle rate to NC.
EEEE
B B B
G
CE
FF FF FF
E E
D D
NOTAV
AILABLE
NO
T A
VAIL
AB
LE
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
ChronothermIV
G
– – – X – C C C C C C
R V VR V VR V R R R R R R R R
Y1 M1 M Y1 Y1 Y1 Y Y1 Y Y1 Y1/W1
W1 R – W1 W1 W1 W1 W1 W1 W1 –
W2 Y Y W2 W2 W2 W2 W2 W2 W2 Aux.
G F F G G G G G G G G
– – R O O O O O or
O/B O O or
O/B O/B
X1 – – – – L L L L L L
– – – – – E E E E E E
– – – – – – – – – – W2
or or
or or
70-6627 • 77
LENNOXHP9, HP10
IMPORTANT: Replace separate indoor/outdoor transformers with single 75 VA transformer. See diagram on page 78.
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T872G1067/Q672L1029 (P-8-11222)T872R1024/Q672L1003T872R1040/Q672L1029 (P-8-11221)T872R1131/Q672L1144
T874C1448/Q674L12165 (24F5101/24F5901)T874R1020/Q674L1025 (24F5401/24F6101)T874R1178/Q674L1165 (24F5601/24F5901)
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Tape off. Not used.C R8222B1067 Relay required to operate system monitor light (emergency
heat LED) on TRADELINE replacement thermostats. See page 10.D Terminal X (C) must be connected to transformer common.E Do not remove factory-installed jumper.F Optional Check LED on T8611G1004. See Fig. 26.
Common Indoor D
CommonOutside
PowerIndoor
PowerOutside
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Thermistor
Multiple Aux.Heat Loads
LED Indication
K
M13163
E
G Field-installed X2 to X jumper (provided).H Use Aux terminal for Auxiliary heat and configure W2 cycle rate to NC.I If separate transformers are used, replace with one 75 VA transformer, as
shown on page 78.J LED is energized when terminal is powered.K L terminal is powered continuously when thermostat is in Em. Ht. position.
EEEE
A A A
A A A
G F
C J
B
K KJ JJ
E E
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
I
X X X X C C C C C C
X3 – – – – – – – – –
VR R R R R R R R R R
V – – – – – – – – –
M Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W1 or
Y W2 W2 W2 W2 W2 W2 W2 W2 Aux.
F G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
R O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
A – – – – – – – – –
– W3 W3 W3 – – – – – –
– – X2 X1 X2 X1 X2 – – – X1 X2 –
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 78
INDOOR BLOWERRELAY
COMPRESSORCONTACTOR
DEFROSTRELAY
REVERSINGVALVE
EMERGENCYHEAT RELAY
HEAT RELAYNO. 1
V
YELLOW
DEFROSTCONTROLRELAY
SERVICELIGHTTHERMOSTAT
THERMISTOR
HEAT RELAYNO. 2
HEAT RELAYNO. 1 (AUX)
EMERGENCYHEAT RELAY
OUTDOORTHERMOSTAT
1
F
M
R
E
X
Y
L
A
VR R
3
X
X
X
G
Y(Y1 + W1)
O
X
W2
E
(X1)
FORMER
REPLACEMENT
TAPE OFF
TAPE OFF
1STEP REMOVE FORMER
OUTSIDETRANSFORMER3
STEPTIE FORMER OUTSIDE TRANSFORMER COMMON TO NEW TRANSORMERCOMMON
4STEP ATTACH BOTH WIRES (FORMER
VR AND V) TO REPLACEMENT THERMOSTAT R TERMINAL
2STEP REPLACE FORMER INDOOR
TRANSFORMER WITH NEW 75VA AT88A1021 OR AT175A1008
1 RELAY REQUIRED TO OPERATE SYSTEM MONITOR LIGHT ON TRADELINE THERMOSTATS. TAPE OFF IF NOT DESIRED. M958B
THERMOSTAT/SUBBASE
IMPORTANT: DISCONNECT POWER SUPPLY BEFORE BEGINNING WIRING.
DEFROSTRELAY
L
X2
70-6627 • 79
LENNOXHP11
IMPORTANT: Replace separate indoor/outdoor transformers with single 75 VA transformer. See diagram on page 78.
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT872G1323/Q672L1201 T874D1033 T874D1199T874D1207/Q674L1199 T874D1207/Q674L1389
T8611
M20
17
T8611
M20
25
FunctionExisting
Terminals T8611
M70
08
T8511
M10
02
Chronotherm® IIIElectronic Replacement or Upgrade
Common D
Power Indoor
Common Outside
Common Outside
Compressor Stage 1
Compressor Stage 2
Auxiliary Heat
Fan
C/O ValveCool
C/O ValveHeat
System Monitor/System Defrost
Em. Heat
Thermistor
1st Stage Heat
LED Indication
M13156
H
C
G
G
H
A IMPORTANT: When subbase system is in AUTO position, equipment will operate in COOL mode only (Q674F1022).
B For emergency heat indication, jumper E and X2. For auxiliary heatindication, jumper W2 and X2. For any X2 functions, X1 must be connected totransformer common.
C For proper operation of auxiliary heat connect Y to W3 or AUX terminal.D Terminal must be connected to the transformer common.E W1 to Y1 jumper required.
F Optional LED indication activated with completed circuit on X1 and X2 terminals.
G Replace separate indoor and outdoor transformers with one 75 VA transformer. See page 78 for wiring diagram.
H Configure O/B (select models) in Installer Setup.I LED is energized when terminal is powered.J L terminal is powered continuously when thermostat is in Em. Ht. position.
PC89
00/
W89
00B10
02
E
Electromechanical
T874D
1165
/
Q674F
1022
B
F F
H
H
C
J
H
I I
H
J
C
G
C
GG GG
X X1 C C C C
VR R R R R R
X – – – – –
V
M Y1 Y Y1 Y1 Y1/W1
M2 Y2 Y2 Y2 Y2 Y2
W2 – – W2
Y W2 W3 W3 W3 Aux.
F G G G G G
R O O O/B O/B O/B
– B B O/B O/B O/B
L X2 L L L L
E E E E E E
A – – – – –
– W1 – – – –
– – X1 X2 – X1 X2 –
Chronotherm IV
A
70-6627 • 80
LENNOXHP16, HP19, HP21, HP22 (DIRECT REPLACEMENTS)
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T874C1448/Q674L1355 (24F5101/31F3201) T874C1448/Q674L1165 (24F5101/24F5901)T874R1178/Q674L1355 (24F5601/31F3201) T874R1178/Q674L1165 (24F5601/24F5901)
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1555
Y594R
1763
Y594G
1161
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal B (C or X) must be connected to transformer common.B Tape off. Thermostat replaces outdoor reset with improved zero droop
performance.C Do not remove factory-installed jumper.D Optional LED indication activated with completed circuit on X1 and X2
terminals.E L terminal is powered continuously when thermostat is in Em. Ht. position.
Common A
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/Sytem Defrost
G
Outdoor Stat/Em. Heat
OutdoorSensor
LED Indication
M13164
F If separate transformers are used, replace with one 75 Va transformer asshown on page 78.
G R8222B1067 Relay required to operate system monitor light (emergencyheat LED) on TRADELINE replacement thermostats. See page 11. Tape off if LED indication is not desired.
H Configure O/B (select models) in Installer Setup.I When W2 is not used, configure W2 cycle rate to NC.J LED is energized when terminal is powered.
CCCC
H H H
H H H
C
B
D
BB BB
J
B
JE JEE
JG
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
F
X B B B C C C C C C
V VR R R R R R R R R R
M Y Y Y Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
Y W W W W2 W2 W2 W2 W2 Aux.
F G G G G G G G G G
– – – – B B B or
O/B B B or
O/B O/B
R O O O O O O or
O/B O O or
O/B O/B
L F F F L L L L L L
E X2 X2 X2 E E E E E E
A T T T
– – – – X1 X2 – – – X1 X2 –
J J
ChronothermIV
D
70-6627 • 81
LENNOXHP16, HP18, HP19, HP20, HP21, HP22
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T874C1448/Q674L1355(24F5101/31F3201) T874C1448/Q674L1165(24F5101/24F5901)T874G1014/Q674F1113(24F5801/24F6201) T874G1154/Q674F1105T874R1178/Q674L1355(24F5601/31F3201) T874R1178/Q674L1165(24F5601/24F5901)T8141A1089 T8611G1053 (27H3001)
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Optional LED indication activated with completed circuit on X1 and
X2 terminals.C Not on HP18 or HP20.D Tape off. Not used.E Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.F R8222B1067 Relay required to operate system monitor light (emergency
heat LED) on TRADELINE replacement thermostats, see page 10. Tape offif LED indication is not desired.
Common G
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
F
EM. Heat
Multiple Aux.Heat Loads E
Thermistor
LED Indication
M13165
G Terminal X (X2 or C) must be connected to transformer common.H Do not remove factory-installed jumper.I If separate transformers are used, replace with one 75 VA transformer as
shown on page 78.J When W2 is not used, configure W2 cycle rate to NC.K If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.L LED is energized when terminal is powered.M L terminal is powered continuously in Emergency Heat Position.
HHHH
A A A
A A A
F
H
K
J
KK KK
LM LMM LC
BB
K
HH
D
L
B
I
ChronothermIV
X or
X2 or
C or
X X X X C C C C C C
V or
VR or
R R R R R R R R R R
M or
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
Y or
W or
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
F or
G G G G G G G G G G
– or
B B B B B B B or
O/B B B or
O/B O/B
R or
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
A – – – – – – – – –
X1 or
X2 – X2 X1 X2 X1 X2 – – – X1 X2 –
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 82
LUXAIRE (MONCRIEF/FRASER JOHNSTON)
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to Y terminal.C Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.D Terminal X (C or B) must be connected to transformer common.E Do not remove factory-installed jumper.F Field-installed X2 to X jumper (provided).
Common D
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd Stage Compressor
M13166
G If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.
H Optional CHECK LED. Connect X1 to switching device; jumper X2 to C.I Optional LED indication activated with completed circuit on X1 and
X2 terminals.J When W2 is not used, configure W2 cycle rate to NC.
EEEE
A A A
A A A
E
G
J
H
GG GG
I
J
I
G
EE
F
B
B or
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W or
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
– – L – L L L L L L
X or
E E E E E E E E E E
– W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
T8611
R1000
T8611
G1004
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 83
MAGIC CHEF“PB” SERIES EQUIPMENT
T8011
R1006
T8011
R1014
FunctionExisting
Terminals
NOTAV
AILABLE
T874C
1018
/
Q674B
1034
A
T8611
R1000
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A IMPORTANT: No provision for emergency heat, system monitor (compressorfault), or auxiliary heat LEDs.
B Terminal C (X) must be connected to transformer common.C Remove Y1 (Y) to W1 (W) jumper.
Common B
Power
1st StageCool
1st StageHeat
2nd StageHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
2nd StageCool
Power Heat
M13167
D L terminal is powered continuously when thermostat is in Em. Ht. position.E LED is energized when terminal is powered.F If separate Y1 and W1 terminals required, install R8222D1014; see
page 12.
E 4
C X C C C C C C
R Rc R R R R R R R
Y1 Y1 Y1 Y1 Y Y1 Y Y1 Y1/W1
W1 W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2
G G G G G G G G G
– B B B B B or
O/B B B or
O/B O/B
O O O O O O or
O/B O O or
O/B O/B
X1 X1 L L L L L L
E – E E E E E E E
– Y2 – – – – – – Y2
– Rh – – – – – – –
E EE 44
CCCC C C C
ChronothermIV
NO
T AV
AIL
ABL
E
F
Y594G
1419
Y594G
1476
70-6627 • 84
MAGIC CHEF“PE” SERIES EQUIPMENT
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to Y terminal.C Terminal is for multiple second stage loads such as contactors, sequencers,
or relays.D If provided on original equipment.E Relay (typically R8222B1067) required if outdoor section has reset shunt
relay and malfunction light indication is desired on thermostat. See page 11.F Terminal C (X) must be connected to transformer common.G Do not remove factory-installed jumper.
Common F
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
M13168
H Optional CHECK LED on T8611G1004. Connect X1 to X1 on control terminal; jumper X2 to R.
I Field-installed X2 to X jumper (provided).J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.K Optional LED indication activated with completed circuit on X1 and
X2 terminals.L When W2 is not used, configure W2 cycle rate to NC.M LED is energized when terminal is powered.N L terminal is powered continuously in Emergency Heat Position.
B
N M MM NN
L
G
E
4
HKI
AAA
AAA
GGGGGG
J JJ JJJ
K
T8611
R1000
T8611
G1004
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
L
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
X1 L L L L L L L
E E E E E E E E E E
– W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 85
MAMMOTH
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT834C2135 T841B1042 T874G1659/Q674C1330 T874H1096/Q674C1330 T874Y1005/Q674E1353
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to Y terminal.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D If provided on original equipment.E Relay (typically R8222B1067) required if outdoor section has reset shunt
relay and malfunction light indication is desired on thermostat. See page 11.F Terminal X (C) must be connected to transformer common.
Common F
Power
Power Reset
1st StageComp.
2nd StageComp.
1st Stage Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
E
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
Filter
2nd StageCompressor
M13169
G Do not remove factory-installed jumper.H Optional CHECK LED on T8611G1004. See Fig. 26.I Field-installed X2 to X jumper (provided).J When W2 is not used, configure W2 cycle rate to NC.K Optional LED indication activated with completed circuit on X1 and
X2 terminals.L LED is energized when terminal is powered.M L terminal is powered continuously in Emergency Heat Position.
B
M L LL M
J
G
E
HKI
AAA
AAA
GGGGGG
MD
D
K
C or
X X X X C C C C C C
R or
R1 R R R R R R R R R
R2 – – – – – – – – –
Y1 or
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
Y2 – – – – – – – – – Y2
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
X or
L L L L L L L L
– E E E E E E E E E
– W3 W3 W3 – – – – – –
– – X2 X1 X2 X1 X2 – – – X1 X2 –
F – – – – – – – – –
– – – – – – – – – W2
L
T8611
R1000
T8611
G1004
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
J
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 86
MAMMOTHUSED WITH A STANDARD HEAT PUMP THERMOSTAT
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T834C2135 (71116901) T841B1042 (71117001)
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads B
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.C If provided on original equipment.D Terminal must be connected to the transformer common.E Do not remove factory-installed jumper.F Optional CHECK LED on T8611G1004. Connect L to X1; jumper X2 to C.G Field-installed X2 to X jumper.
M13194
H Both first stage heat and cool are connected to Y terminal.I If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.J When W2 is not used, configure W2 cycle rate to NC.K Optional LED indication activated with completed circuit on X1 and
X2 terminals.L LED is energized when terminal is powered.M L terminal is powered continuously when thermostat is in Em. Ht. position.
111
C
EEEEE
111
K
EE
H
M
IIIII I
FKG
J
LLL LM M
C X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
– E E E E E E E E E
– W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
J
T8611
R1000
T8611
G1004
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 87
MAMMOTHUSED WITH A NIGHT SETBACK THERMOSTAT
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T874G1378/Q674C1124 T874G1659/Q674C1330 (71115201) T874H1096/Q674C1330 (71115201)
Common F
Power
Night SetbackPower
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8411
R1002
T8411
R1028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Disconnect external timimg device from circuit before wiring replacement
thermostat.E Optional LED indication activated with completed circuit on X1 and
X2 terminals.F Terminal must be connected to the transformer common. M13195
G Do not remove factory-installed jumper. H Optional CHECK LED on T8611G1004. See Fig. 26.I Field-installed X2 to X (C) jumper.J C terminal is located on terminal strip, not on subbase.K If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.L LED is energized when terminal is powered.M L terminal is powered continuously when thermostat is in Em. Ht. position.
1
B
11
GGGGG
111
E
B
GG
M
KKKKK K
HEI
LLLM M
C X X X C C C C C C
R1 R R R R R R R R R
R2 – – – – – – – – –
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
– W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
X L L L L L L L
– E E E E E E E E E
– W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
L
D
J
T8611
R1000
T8611
G1004
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 88
MARTIN INDUSTRIES
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1183 T841A1522 T841A1548 (24015808)
Common E
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Both first stage heat and cool are connected to Y terminal.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D LED indication with completed circuit on X1 and X2 terminals.E Terminal must be connected to the transformer common.
M13196
F Do not remove factory-installed jumper.G When W2 is not used, configure W2 cycle rate to NC.H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.I LED is energized when terminal is powered.J L terminal is powered continuously when thermostat is in Em. Ht. position.
111
FFFFF
111
G
FF
B
J
HHHHH H
D
IIIJ J
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
D D
I
GT86
11R10
00
T8611
G1004
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 89
PHILLIPS ENERGY
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT8611R1174
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T86
11G10
04
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal must be connected to the transformer common.E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.M13197
F Do not remove factory-installed jumper.G Field-installed X2 to X jumper.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.J Optional LED indication activated with completed circuit on X1 and
X2 terminals.
111
FFFFF
111
J
FF
H
I
EEEEE E
J JG
B
HHHI I
C X X X C C C C C C
R R R R R R R R R R
Y1 Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
– W3 W3 W3
X2 – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
B
H
F
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 90
RHEEM/RUUDCOOLING CHANGEOVER (PRE 11/85) (PCA, PNA, PNB TYPICAL)
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
SystemMonitor
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T86
11G10
04
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal must be connected to the transformer common.E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.M13198
F Do not remove factory-installed jumper.G Optional LED indication with completed circuit on X1 and X2 terminals.H Field-installed X2 to X (C) jumper.I LED is energized when terminal is powered.J L terminal is powered continuously when thermostat is in Em. Ht. position.
111
C
FFFFF
111
FF
J
EEEEE E
GGGH
2
IIIJ J
2
I
X X X X C C C C C C
R R R R R R R R R R
Y1 or
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 91
RHEEM/RUUDPCB, PFA, PGB, PGA HEATING CHANGEOVER (AFTER 11/85) RPCB, RPFA
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
SystemMonitor
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1308
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal must be connected to the transformer common.E Do not remove factory-installed jumper.
M13206
F Optional Check LED on T8611G1004. See Fig. 26.G Field-installed X2 to X (C) jumper.H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.I LED is energized when terminal is powered.J L terminal is powered continuously when thermostat is in Em. Ht. position.
EEEEE
I
A
B
A A
B
II
AA A
J IJIJ I
H HHHH HH
EE
FGG
JJ
X X X X C C C C C C
R R R R R R R R R R
Y Y Y1 Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O – O O O or
O/B O O or
O/B O/B
L L L X1 L L L L L L
E E E E E E E E E E
– W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 92
SECOTA2000, TA2040, TA2010 TA2050
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Lads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T86
11G10
04
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal must be connected to the transformer common.E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal. M13171
F Do not remove factory-installed jumper.G Optional LED indication with completed circuit on X1 and X2 terminals.H Field-installed X2 to X (C) jumper.I LED is energized when terminal is powered.J E and L terminals are not available on TA2010 or TA2050.K L terminal is powered continuously when thermostat is in Em. Ht. position.
AAA
FFFFF
AAA
F
K
EEEEE E
G
FF
B
IIIK K
B
I
G
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W W W W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
J
GH
J
F F
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 93
SECOTA2060
Common A
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Outdoor Thermistor/
Sensor
Em. Heat
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1555
Y594R
1763
Y594G
1161
T8611
R1000
T86
11G10
04
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal must be connected to the transformer common.B Tape off. Thermostat replaces outdoor reset with improved zero droop
performance.C Do not remove factory-installed jumper.D Optional LED indication with completed circuit on X1 and X2 terminals.
M13199
E Configure O/B (select models) in Installer Setup.F Replace existing thermistor with Honeywell C815A1005.G When W2 is not used, configure W2 cycle rate to NC.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.
EEE
CCCCC
EEE
F
I
4
H
BBBBB B
D
FF
G
HHHI I
G
HH
X B B B C C C C C C
R R R R R R R R R R
Y Y Y Y Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W2 W W W W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– – – – B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L F F F L L L L L L
W3 T T T
E X2 X2 X2 E E E E E E
– – – – X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
70-6627 • 94
SUN MANUFACTURING
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1399 (HPL1404)
Common C
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads D
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T86
11G10
04
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal must be connected to the transformer common.D Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.E Do not remove factory-installed jumper.
M13200
F Optional LED indication with completed circuit on X1 and X2 terminals.G Field-installed X2 to X (C) jumper.H If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.I LED is energized when terminal is powered.J L terminal is powered continuously when thermostat is in Em. Ht. position.
AAA
EEEEE
AAA
F
JI
HHHHH H
F
FF
B
IIIJ J
B
I
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W1 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
EE
GG
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 95
SQUARE D/SUN DIAL
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1357
T841A1365 (121000012)
Common D
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
/
T86
11G10
04
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal must be connected to the transformer common. M13201
E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.
F Do not remove factory-installed jumper.G L terminal is powered continuously when thermostat is in Em. Ht. position.8 LED is energized when terminal is powered.
AAA
FFFFF
AAA
8 G G 8 G 8 8
EEEEE E
B
B
FF
C or
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
K or
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 96
SQUARE D/SUN DIAL
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T872C1525/Q672F1182 (HCD-2/HCB-1)
T874C1224/Q674F1071 (63600-002-09/63600-002-11)
Common B
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
TerminalsNOT
AVAIL
ABLE
NOT AV
AILABLE
T874C
1018
/
Q674F
1022
T8611
R1000
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Remove factory-installed Y1 (Y) to W1 jumper.B Terminal must be connected to the transformer common.C If separate Y1 and W1 terminals are required, install R8222D1014; see page 12.D Optional LED indication activated with completed circuit on X1 and
X2 terminals. M13202
E When W2 is not used, configure W2 cycle rate to NC.F LED is energized when terminal is powered.G L terminal is powered continuously when thermostat is in Em. Ht. position.
AAAAAA
FG F
E
G F
E
D
C
GF
X or
X1 or
C X1 C C C C C C
R R R R R R R R
Y or
Y1 Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G
B B B B B or
O/B B B or
O/B O/B
O O O O O or
O/B O O or
O/B O/B
L X2 L L L L L L
K or
E E E E E E E E
X2 X2 X1 X2 –
– – – – – – – W2
Y2 Y2 Y2
NO
T A
VAIL
AB
LE
NO
T A
VAIL
AB
LE
ChronothermIV
70-6627 • 97
TRANE/AMERICAN STANDARDDIRECT TRADE REPLACEMENTS
Common A
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Outdoor Sensor C
Outdoor Stat
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1555
Y594R
1763
Y594G
1161
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal must be connected to the transformer common.B Tape off. Thermostat replaces outdoor reset with improved zero droop
performance.C Do not remove factory-installed jumper.D Optional LED indication with completed circuit on X1 and X2 terminals. M13225
E Configure O/B (select models) in Installer Setup.F When W2 is not used, configure W2 cycle rate to NC.G LED is energized when terminal is powered.H L terminal is powered continuously when thermostat is in Em. Ht. position.
BBBBB
G
F
B
F
B B B B C C C C C C
R R R R R R R R R R
Y Y Y Y Y1 or
Y Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W or W1 W W W W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– – – – B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
F F F F L L L L L L
T or
A T T T
X2 X2 X2 X2 E E E E E E
– – – – X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
CCCCC
G G H
DD
GGHGH
EEE
EEE
ChronothermIV
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1407 (ASYSTAT652)T841A1530 (ASYSTAT652A)T872G1059/Q672J1039T872R1057/Q672L1037T874G1204/Q674J1043T874G1675/Q674J1142 (ASYSTAT650/WY28X0250)T874R1053/Q674L1140T874R1426/Q674L1496 (BAYSTAT339/WY28X0112)T874R1657/Q674L1611 (ASYSTAT651/WY28X235)
T874R1939 (ASYSTAT-651A)/Q674L1801 (THT1225)T8141A1014T8141A1071T8300A1128/Q6300A1101 (BAY28X194/BAY28X195)T8611G1038 (THT-0603)T8611G1111 (TAYSTAT501)T8611R1091T8611R1109 (THT-0602)T8611R1117 (ASYSTAT700)
70-6627 • 98
TRANE/AMERICAN STANDARD
Common A
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Outdoor Stat
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1555
Y594R
1763
Y594G
1161
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal must be connected to the transformer common.B Optional LED indication activated with completed circuit on X1 and
X2 terminals.C Do not remove factory-installed jumper.D Optional LED on T8611G1004. See Fig. 26. M13226
E Configure O/B (select models) in Installer Setup.F When W2 is not used, configure W2 cycle rate to NC.G LED is energized when terminal is powered.H L terminal is powered continuously when thermostat is in Em. Ht. position.
G
F
F
CCCCC
G G H
D
GGHGH
EEE
EEE
B
C B B B C C C C C C
R R R R R R R R R R
Y or
Y1 Y Y Y Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – – – W1 W1 W1 W1 W1 –
W2 W W W W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B – – – B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L F F F L L L L L L
E X2 X2 X2 E E E E E E
X1 or
X2 – – – X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
70-6627 • 99
TRANE/AMERICAN STANDARD
Common B
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
OutdoorSensor
Outdoor Stat
Multiple Aux.Heat Loads K
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Tape off. Outdoor reset not provided with Tradeline replacement thermostat.B Terminal must be connected to the transformer common.C Tape off. Thermostat replaces outdoor reset with improved zero droop
performance.4 Configure O/B (select models) in Installer Setup.E Do not remove factory-installed jumper.F Optional Check LED on T8611G1004. See Fig. 26.G Field-installed X2 to X (C) jumper. M13227
H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.K Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.L When W2 is not used, configure W2 cycle rate to NC.
CCCCC
H
L
C
L
B X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W or X1 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
F L X1 L L L L L L
T or
H
X2 E E E E E E E E E
– W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
EEEEE
H I
F
HHIHI
DDD
DDD
AAA
E E
JJJJJJ
G G
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 100
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1407 (ASYSTAT652)T841A1530 (ASYSTAT652A)T872G1059/Q672J1039T872R1057/Q672L1037T874G1204/Q674J1043T874G1675/Q674J1142
(ASYSTAT650/WY28X0250)
TRANE/AMERICAN STANDARD
T874R1053/Q674L1140T874R1426/Q674L1496 (BAYSTAT339/WY28X0112)T874R1657/Q674L1611 (ASYSTAT651/WY28X235)T874R1939 (ASYSTAT-651A)/Q674L1801 (THT1225)T8141A1014T8141A1071T8300A1128/Q6300A1101 (BAY28X194/BAY28X195)
T8611G1038 (THT-0603)T8611G111 (TAYSTAT501)T8611R1091T8611R1109 (THT-0602)T8611R1117 (ASYSTAT700)
Common B
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Outdoor Stat
Multiple Aux.Heat Loads D
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A When W2 is not used, configure W2 cycle rate to NC.B Terminal must be connected to the transformer common.C Optional LED indication activated with completed circuit on X1 and
X2 terminals.D Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.E Do not remove factory-installed jumper.
M13228
F Optional Check LED on T8611G1004. See Fig. 26.G Field-installed X2 to X (C) jumper.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.K Configure O/B (select models) in Installer Setup.
A
A
EEEEE
H I
F
HHIHI
KKK
KKK
E E
JJJJJJ
G CC
C X X X C C C C C C
R R R R R R R R R R
Y or
Y1 Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
– W3 W3 W3
X1 or
X2 – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 101
WEATHERKING
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1456 (41-20796-65)
T874R1830/Q674L1504 (41-20769-64)
Common A
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1308
Y594R
1797
Y594G
1633
T8611
R1000
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Terminal must be connected to the transformer common.B Configure O/B (select models) in Installer Setup.C Do not remove factory-installed jumper.D To eliminate automatic fan in emergency heat mode, connect switching relay
as shown on page 9.M13205
E When W2 is not used, configure W2 cycle rate to NC.F LED is energized when terminal is powered.G L terminal is powered continuously when thermostat is in Em. Ht. position.
CCCCC
GF
B
E
B B
E
44444
FF
BB B
D
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y Y1 Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L L L
E E E E E E E E E E
X – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – Y2 – – – – – Y2
FGFG F
ChronothermIV
70-6627 • 102
WEATHERKINGTYPICAL WPH SERIES
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER OR CUSTOMER PART NUMBERT841A1373 T8141A1105 GE 3AAT80
Common 6
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D LED is energized when terminal is powered.E L terminal is powered continuously when thermostat is in Em. Ht. position.F Terminal must be connected to the transformer common. M13209
G Do not remove factory-installed jumper.H Optional Check LED on T8611G1004. See Fig. 26.I Field-installed X2 to X (C) jumper.J If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.
GGGGG
D
A
B
A A
B
D
AA A
E DEDE D
J JJJJ J
K
GG
HII
JJ
X or
C1 or
C X X X C C C C C C
R R R R R R R R R R
Y or
W1 Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 or
E W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O or
Y1 O O O O O O or
O/B O O or
O/B O/B
L or
X L X1 L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 103
WESCO/ADDISONModels: WPH022, 028, 032, 036, 044, 054, 064. WRH022, 028, 032, 036, 044, 054, 064. WSH028, 032, 036, 042. DWPG024, 030, 036, 042,
048, 054, 060, 066. HWPG012, 017, 020, 024, 030, 036, 042, 048, 054, 060, 066. VWPG017, 020, 024, 030, 036, 042, 048, 054, 060, 066.
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T872G1265/Q672F1265T872G1281/Q672F1265T872R1016/Q672B1103T874C1315
T874G1287/Q6741253T874G1543/Q674F1345 (403-197)T874R1012/Q674B1109
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.
Common E
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
M13222
D LED is energized when terminal is powered.E Terminal must be connected to the transformer common.F Do not remove factory-installed jumper.G L terminal is powered continuously in Em. Ht. position.
FFFF
A A A
A A A
F
B
G DG DG D
B
FF
D
C1 or
C X X X C C C C C C
R R R R R R R R R R
W1 or
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W1 or
W2 or
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
Y1 or
O O O O O O O or
O/B O O or
O/B O/B
X L L L L L L L
E E E E E E E E E E
– W3 W3 W3 – – – – – –
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 104
WESTINGHOUSETYPICAL HSO
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT872G1034/Q672F1141 T872G1034/Q672F1091 T872G1034/Q672F1257 T872G1034/Q672J1013T872G1034/Q672J1062 T872G1265/Q672F1265 T872R1149/Q672L1110 T872R1149/Q672L1128T872R1149/Q672L1151 T874G1048/Q674F1121 T874G1048/Q674F1246 T874G1048/Q674F1279T874G1048/Q674J1019 T874G1048/Q674J1050 T874G1188/Q674F1295 T874G1345T874R1103/Q674L1108 T874R1103/Q674L1173 T874R1244/Q674L1314 T874W1007/Q674L1256
Common E
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D LED is energized when terminal is powered.E Terminal must be connected to the transformer common.
M13210
F Do not remove factory-installed jumper.G Optional Check LED on T8611G1004. See Fig. 26.H Field-installed X2 to X (C) jumper.I If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.J L terminal is powered continuously when thermostat is in Em. Ht. position.
FFFFF
D
A
B
A A
B
D
AA A
J DJDJ D
I IIII I
FF
GHH
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L or
L1 L X1 L L L L L L
E E E E E E E E E E
W3 – W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 105
WESTINGHOUSETYPICAL HB, HI RELI, HLO
Common 2
Power
1st StageHeat
2nd Stage Heat
Fan
1st StageCool
2nd Stage Cool
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
T8011
R1006
T8011
R1014
FunctionExisting
Terminals
NOTAV
AILABLE
T8611
R1000
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Remove factory-installed Y1 (Y) to W1 (W) jumper.B Terminal must be connected to the transformer common.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.M13211
E Field-installed X2 to X (C) jumper.F If separate Y1 and W1 terminals are required, install R8222D1014; see
page 12.G When W2 is not used, configure W2 cycle rate to NC.
A
G
F
D DDDD D
AA
G
EE
X X X C C C C C C
R R R R R R R R R
W1 W1 W1 W1 W1 W1 W1 W1
W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G
Y Y Y1 Y1 Y Y1 Y Y1 Y1/W1
– – – – – – – – Y2
– B B B B B or
O/B B B or
O/B O/B
– O O O O O or
O/B O O or
O/B O/B
– L X1 L L L L L L
E E E E E E E E E
– W3 W3
– X2 X2 – – – – X1 X2 –
– – – – – – – – W2
AAA A
ChronothermIV
NO
T A
VA
ILA
BL
E
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 106
WESTINGHOUSETYPICAL HE SERIES
Common E
Power
Compressor
1st Stage Heat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Use common from secondary side of system trransformer.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Field-installed E to W2 (Aux W8900B) jumper required. M13212
E Terminal must be connected to the transformer common.F Do not remove factory-installed jumper.G If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.H When W2 is not used, configure W2 cycle rate to NC.
D
H
H
G GGGG G
DDD
AA
A A
A
A
DDDDD
X X X C C C C C C
V R R R R R R R R R
C Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
H2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
F G G G G G G G G G
Z B B B B B B or
O/B B B or
O/B O/B
– O O O O O O or
O/B O O or
O/B O/B
– – L – L L L L L L
– E E E E E E E E E
– W3 W3 W3
– – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
FFFFF FF
2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 107
WESTINGHOUSETYPICAL 2-SPEED PUMP
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT872G1356/Q672L1219
T874D,G/Q674L1223
T8611
M20
17
T8611
M20
25
FunctionExisting
Terminals T8611
M70
08
T8511
M10
02
Chronotherm® IIIElectronic Replacement or Upgrade
Common D
Power
1st Stage Heat
Compressor Stage 1
Compressor Stage 2
2nd Stage Heat
Auxiliary 3rd Stage Heat
Fan
C/O ValveCool
C/O ValveHeat
System Monitor/System Defrost
Em. Heat
LED Indication
M13242
G G
A When subbase system switch is in AUTO position, equipment will operate in COOL mode only.
B IMPORTANT: Do not use T874D/Q674F1022 if B terminal is used onoriginal equipment.
C Y1 to W1 jumper required.D Terminal must be connected to the transformer common.
E Optional LED indication activated with completed circuit on X1 and X2 terminals.
F Y2 to W2 jumper required.G Configure O/B (Select Models) in Installer Setup.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.
PC89
00/
W89
00B10
02
Electromechanical
T84D11
65Q67
4F10
22A
H
E E
G
G
I
G
H H
G
I
C
X X1 C C C C
R R R R R R
– W1 – – – –
Y1 Y1 Y Y1 Y1 Y1/W1
Y2 Y2 Y2 Y2 Y2 Y2
– W2 W2 – – W2
– – W3 W3 W3 Aux.
G G G G G G
O O O O/B O/B O/B
B B O/B O/B O/B
L X2 L L L L
W E E E E E
– – X1 X2 – X1 X2 –
FFF
C
Chronotherm IV
70-6627 • 108
WHITE RODGERSTYPICAL 1F92-1, 1F92-6, 1F92-7, 1F58-910 THERMOSTAT, S28 SUBBASES
Common E
Power
Compressor
1st StageHeat
Aux. Heat
3rd StageAux. Heat
Fan
2nd StageCool
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Lads D
LED Indication
T8611
M20
17
T8611
M20
25
FunctionExisting
Terminals T841A
1712
T8611
R1000
T86
11G10
04
T
8611
M70
08
T8511
M10
02
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
IIIElectronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Do not remove factory-installed jumper.C If provided on original equipment.D Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.E Terminal must be connected to the transformer common.F If 2nd stage heat is auxiliary (electric resistive), connect auxiliary stage to W3. M13141
G Field-installed X2 to X (C) jumper.H LED is energized when terminal is powered.I L terminal is powered continuously when thermostat is in Em. Ht. position.J Optional LED indication activated with completed circuit on X1 and
X2 terminals.K When 3rd Stage aux. heat is not used, leave W2 blank and wire auxiliary
heat to aux. terminal. Configure W2 to NC in installer setup.
C
C
C
B
FF
B
C
C
A
I I
J
AA
K
HH
J
H
JG
B
X1 or
C X X X C C C C
R R R R R R R R
Y or
Y1 Y Y Y1 Y or
Y1 Y1 Y1 Y1/W1
W1 – W1 W1 W1 – – –
W2 W2 W2 W2 W2 W2
W3 W3 W3 W3 Aux.
G G G G G G G G
Y2 Y2 Y2 Y2 Y2
B B B B B O/B O/B O/B
O O O O O O/B O/B O/B
L – L – L L L L
E E E E E E E E
– W3 W3 W3 – – – –
– – X2 X1 X2 X1 X2 – X1 X2 –
K
A AA
Chronotherm IV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 109
WILLIAMSONCOOLING CHANGEOVER
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT874C1570/Q674B1000 T874L1455/Q674L1322T874R1236/Q674L1348 T874R1392/Q674L1447
Common F
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T86
11G10
04
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Optional LED indication activated with completed circuit on X1 and
X2 terminals.E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.M13213
F Terminal must be connected to the transformer common.G Do not remove factory-installed jumper.H Optional Check LED on T8611G1004. See Fig. 26.I Field-installed X2 to X (C) jumper.J LED is energized when terminal is powered.K L terminal is powered continuously when thermostat is in Em. Ht. position.
111
GGGGG
111
D
GG
K
EEEEE E
HDI
B
JJJK K
B
J
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
A – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 110
WILLIAMSONHEATING CHANGEOVER
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBERT874N1008/Q674F1196
Common E
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T86
11G10
04
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A LED is energized when terminal is powered.B L terminal is powered continuously when thermostat is in Em. Ht. position.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal. M13214
E Terminal must be connected to the transformer common.F Do not remove factory-installed jumper.G Optional LED indication with completed circuit on X1 and X2 terminals.H Field-installed X2 to X (C) jumper.I Configure O/B (select models) in Installer Setup.J When W2 is not used, configure W2 cycle rate to NC.
III
FFFFF
III
G
FF
BA
DDDDD D
HH
J
AAAB B
J
A
X X X X C C C C C C
R R R R R R R R R R
Y1 Y Y1 Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
W1 B B B B B B or
O/B B B or
O/B O/B
– O O O O O O or
O/B O O or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 111
YORK/BORG WARNERB2CH, B2PS, E1CS, E1EB, E1HB, E2CH, STELLAR 2000 (DIRECT REPLACEMENTS)
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1274 (2TH11703324)T872G1299/Q672L1177T872R1032/Q672L1011T874G1170/Q674J1027 (2TH11702424)T874G1196/Q674J1027T874G1345 (2TH11702624)T874G1402/Q674L1363 (2TH11702824)
T874G1428/Q674J1027 (6TH11702424)T874R1046/Q674L1017 (2TH11702224)T874R1046/Q674L1272 (2TH11702224)T8141A1006T8300A1037/Q6300A1044 (2ET11700124A)T8611R1018 (025-27655)
Common B
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
MutipleHeat Loads
LEDIndication
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A H terminal is not available on all models.B Terminal must be connected to the transformer common.C Configure O/B (select models) in Installer Setup. M13215
D Do not remove factory-installed jumper.E Configure W2 cycle rate to NC.
CCC
DDDDD
CCC
E
A
E
ChronothermIV
D D
B X X X C C C C C C
R R R R R R R R R R
Y or
Y1 Y Y Y1 Y1 Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W or
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
H B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
X – L – L L L L L L
E or
X E E E E E E E E E
– W3 W3 W3 – – – – – W2
– – X2 X1 X2 – – – – – –
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 112
YORK/BORG WARNERDIRECT REPLACEMENTS (OUTDOOR THERMISTOR MODELS) B2CH, B2PS, E1CS, E1EB, E1HB, E2CH
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T872G1042/Q672J1021 T874R1145/Q674L1272 T874R1169/Q674L1330T874R1251/Q674L1272 (2TH11702324) T874R1327/Q674L1272 (6TH11702224)
Common C
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Outdoor Thermistor
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1555
Y594R
1763
Y594G
1161
T8611
R1000
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A F and H terminals are not available on all models.B Tape off. Thermostat replaces outdoor reset models with improved zero droop
performance.C Terminal must be connected to the transformer common.
M13216
D Configure O/B (select models) in Installer Setup.E Do not remove factory-installed jumper.F Configure W2 cycle rate to NC.
DDD
EEEEE
DDD
F
A
A
BBBBB B
B B B B C C C C C C
R R R R R R R R R R
Y Y Y Y Y1 Y Y1 Y Y1 Y1/W1
– – – – W1 W1 W1 W1 W1 –
W W W W W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
H – – – B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
F F F F L L L L L L
X X2 X2 X2 E E E E E E
T T T T
ChronothermIV
70-6627 • 113
YORK/BORG WARNERB2CH, B2PS, EICS, EIEB, EIHB, E2CH (ALTERNATE REPLACEMENTS)
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T841A1274 (2TH11703324)T872G1299/Q672L1177 1T872R1032/Q672L1011 1T874G1170/Q674J1027 (2TH11702424)T874G1196/Q674J1027
T874G1345 (2TH11702624)1T874G1402/Q674L1363 (2TH11702824)T874G1428/Q674J1027 (6TH11702424)1T874R1046/Q674L1017 (2TH11702224)1T874R1046/Q674L1272 (2TH11702224)1
T8141A1006T8300A1037/Q6300A1044 (2ET11700124A)T8300A1144/Q6300A1044 (6ET11700124A)T8611R1018 (025-27655)
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1217
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D LED is energized when terminal is powered.E L terminal is powered continuously in Em. Ht. position.F Tape off. Not used.G Field-installed E to W2 jumper for improved performance in emergency heat.
Common H
Power
Compressor
1st StageHeat
AuxiliaryHeat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
EM. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
M13224
H Terminal must be connected to the transformer common.I Do not remove factory-installed jumper.J Optional Check LED on T8611G1004. See Fig. 26.K Field-installed X2 to X (C) jumper.L H terminal is not available on all models.M Using these thermostats with a W8045 Demand Defrost Control may cause
customer complaints. If replacing a thermostat used on a W8045, see York/Borg Warner Direct Replacements.
IIII
A A A
A A A
I
B
DE DE D
B
II
D D
B X X X C C C C C C
R R R R R R R R R R
Y or
Y1 Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
W1 – W1 W1 W1 W1 W1 W1 W1 –
W or
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
H B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
X L X1 L L L L L L
E or
X E E E E E E E E E
– W3 W3 W3 – – – – – –
T X – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
G GG GG GG G G
E
F
L
K K J
I
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 114
YORK/BORG WARNER
TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)T874G1410/Q674F1311(6TH11703024)
Common E
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B When W2 is not used, configure W2 cycle rate to NC.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D If provided on original equipment.E Terminal must be connected to the transformer common.
M13219
F If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.
G Do not remove factory-installed jumper.H Optional Check LED on T8611G1004. See Fig. 26.I Field-installed X2 to X (C) jumper.J LED is energized when terminal is powered.K L terminal is powered continuously when thermostat is in Em. Ht. position.
AAA
GGGGG
AAA
B
D
D
FFFFF F
GG
D
KJ KJ JKJ J
B
HII
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
– B B B B B B or
O/B B B or
O/B O/B
O O O O O O O or
O/B O O or
O/B O/B
L L X1 L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
– – X2 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 115
YORK/BORG WARNERTYPICAL EBHP SERIES
Common B
Power
1st StageHeat
Aux. Heat
Fan
1st StageCool
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
T8011
R1006
T8011
R1014
FunctionExisting
Terminals
NOTAV
AILABLE
T8611
R1000
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Remove factory-installed Y1 (Y) to W1 (W) jumper.B Terminal must be connected to the transformer common.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.M13220
D Field-installed X2 to X (C) jumper.E If separate Y1 and W1 terminals are required, install R8222D1014; see
page 12.F Configure W2 cycle rate to NC.
AAAAAA
E
F
A
D
B or
X2 X X C C C C C C
R R R R R R R R R
W1 W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G
Y1 Y Y1 Y1 Y Y1 Y Y1 Y1/W1
– B B B B B or
O/B B B or
O/B O/B
– O O O O O or
O/B O O or
O/B O/B
– L – L L L L L L
E E E E E E E E E
– W3 W3 – – – – – –
– X2 X1 X2 – – – – X1 X2 –
ChronothermIV
NO
T A
VAIL
AB
LE
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 116
ZONE AIREVHP SERIES
TYPICAL THERMOSTATS AND SUBBASES—HONEYWELL MODEL NUMBERT874R1129/Q674L1181T874N1024/Q674F1261
Common 4
Power
Compressor
1st StageHeat
Aux. Heat
Fan
C/O ValveHeat
C/O ValveCool
System Monitor/System Defrost
Em. Heat
Multiple Aux.Heat Loads C
LED Indication
2nd StageCompressor
2nd StageCool
T8011
R1006
T8011
R1014
FunctionExisting
Terminals T841A
1712
T8611
R1000
T8611
G1004
T8411
R1002
T8411
R1028
T8511
G1021
T8511
G1047
T8611
G2002
T8611
G2028
PC89
00/
W89
00B10
02
ElectromechanicalChronotherm®
III
Electronic Replacement or Upgrade
A Configure O/B (select models) in Installer Setup.B Optional LED indication activated with completed circuit on X1 and
X2 terminals.C Terminal is for multiple auxiliary heat loads such as contactors, sequencers,
or relays.D Terminal must be connected to the transformer common.E If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B)
terminal.M13221
F Field-installed X2 to X (C) jumper.G Do not remove factory-installed jumper.H Optional Check LED on T8611G1004. See Fig. 26.I When W2 is not used, configure W2 cycle rate to NC.J LED is energized when terminal is powered.K L terminal is powered continuously when thermostat is in Em. Ht. position.
I
BF
X1 or
X X X X C C C C C C
R R R R R R R R R R
Y Y Y Y1 Y1 or
Y Y Y1 Y Y1 Y1/W1
– – W1 W1 W1 W1 W1 W1 W1 –
W2 W2 W2 W2 W2 W2 W2 W2 W2 Aux.
G G G G G G G G G G
B or
W1 B B B B B B or
O/B B B or
O/B O/B
– O O O O O O or
O/B O O or
O/B O/B
L L L L L L L L
E E E E E E E E E E
W3 W3 W3 W3
X2 – X2 X1 X2 X1 X2 – – – X1 X2 –
– – – – – – – – – W2
– – – – – – – – – Y2
GGGGGGG
EEEEE E
J K K J K J J
H
I
B
A A A
A A A
ChronothermIV
Y594R
1425
Y594G
1419
Y594G
1476
70-6627 • 117
Index
Subject/Manufacturer Page Number
Amana..................................................................................................................................................................... 36
Addison ................................................................................................................................................................... 103
Air-Ease .................................................................................................................................................................. 38
American Stabilis .................................................................................................................................................... 37
American Standard ................................................................................................................................................. 97-100
Application Tips....................................................................................................................................................... 33
Arcoaire................................................................................................................................................................... 39
Armstrong ............................................................................................................................................................... 38
Bard ........................................................................................................................................................................ 40
Borg Warner............................................................................................................................................................ 111-115
Bryant-Day/Night-Payne ......................................................................................................................................... 41
Carrier ..................................................................................................................................................................... 42-45
Coleman.................................................................................................................................................................. 50-53
Comfort Air .............................................................................................................................................................. 60
Comfortmaker ......................................................................................................................................................... 39
Crispaire.................................................................................................................................................................. 46
Econar ..................................................................................................................................................................... 47-48
Enerstat ................................................................................................................................................................... 49
Evcon ...................................................................................................................................................................... 50-53
Fedders ................................................................................................................................................................... 54
Florida Heat Pump .................................................................................................................................................. 55
Fraser Johnston ...................................................................................................................................................... 82
Friedrich .................................................................................................................................................................. 56
General Electric ...................................................................................................................................................... 57-58
Geo System ............................................................................................................................................................ 59
Heat Controller ........................................................................................................................................................ 60
Heatwave ................................................................................................................................................................ 61
Heil Quaker ............................................................................................................................................................. 68-69
Hookup Diagrams ................................................................................................................................................... 15-25
Honeywell ............................................................................................................................................................... 62-67
InterCity Products ................................................................................................................................................... 68-69
Intertherm................................................................................................................................................................ 70-72
Janitrol .................................................................................................................................................................... 73
Keeprite................................................................................................................................................................... 74
Lennox .................................................................................................................................................................... 75-81
Luxaire .................................................................................................................................................................... 82
Index ....................................................................................................................................................................... 117-119
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 118
Subject/Manufacturer Page Number
Magic Chef .............................................................................................................................................................. 83-84
Mammoth ................................................................................................................................................................ 85-87
Martin Industries ..................................................................................................................................................... 88
Marvair .................................................................................................................................................................... 46
Miller ....................................................................................................................................................................... 70-72
Moncrief .................................................................................................................................................................. 82
Nordyne .................................................................................................................................................................. 70-72
Payne ...................................................................................................................................................................... 41
Phillips Energy ........................................................................................................................................................ 89
Rheem .................................................................................................................................................................... 90-91
Ruud ....................................................................................................................................................................... 90-91
Seco ........................................................................................................................................................................ 92-93
Snyder General ....................................................................................................................................................... 39
Southwest Mfg. ....................................................................................................................................................... 61
Square D ................................................................................................................................................................. 95-96
Sun Dial .................................................................................................................................................................. 95-96
Sun Manufacturing .................................................................................................................................................. 94
Symbols .................................................................................................................................................................. 13
Tappan .................................................................................................................................................................... 73
Tempstar ................................................................................................................................................................. 68-69
Thermostat Manufacturer Cross Reference............................................................................................................ 29-32
Tips for Using This Heat Pump Cross Reference ................................................................................................... 33
Trane....................................................................................................................................................................... 97-100
Weatherking ............................................................................................................................................................ 101-102
Wesco ..................................................................................................................................................................... 103
Westinghouse ......................................................................................................................................................... 104-107
Whirlpool ................................................................................................................................................................. 68-69
White Rodgers ........................................................................................................................................................ 108
Williamson............................................................................................................................................................... 109-110
York ......................................................................................................................................................................... 111-115
ZoneAire ................................................................................................................................................................. 116
Wiring Connections for Honeywell Heat Pump Thermostats .................................................................................. 34-35
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 119
Index to Figure Diagrams
Figure Number Page NumberFig. 1 Using the T8611M on two-speed heat pump compressor equipment. .................................... 6
Fig. 2 Installing an R8222B Switching Relay on heat pumps requiring heating mode changeover. 8
Fig. 3 Installing an R8222B Switching Relay on heat pumps requiring coolingmode changeover. ................................................................................................................... 8
Fig. 4 Changing fan operation in emergency heat mode for electronic thermostats. ........................ 9
Fig. 5 Relay wiring connections for Carrier equipment (typical 38BQ), and T8511M, T8611M,PC8900/W8900B1002. Require relay (R8222B1067 typically) for proper operation............... 9
Fig. 6 Relay wiring connections for Evcon/Coleman equipment (3200, 3300). RequiresR8222B1067 Relay to operate system. Equipment requires normaly energizedemergency heat. ...................................................................................................................... 10
Fig. 7 Relay wiring connections for Evcon/Coleman equipment (3200, 3300, 3360, 3400,6000, and 6500). Requires R8222B1067 Relay to operate system. Equipment requiresnormally energized emergency heat. ...................................................................................... 10
Fig. 8 Relay wiring connections for Lennox equipment (HP9, HP10). Requires R822B1067Relay to operate the system monitor light (emergency heat LED) on TRADELINEreplacement thermostats. Tape off if light is not desired. ........................................................ 10
Fig. 9 Relay wiring connections for Lennox equipment (HP16, HP19, HP21, HP22 DirectReplacements). Requires R8222B1067 Relay to operate the system monitor light(emergency heat LED) on TRADELINE replacement thermostats. Tape off if lightis not desired. .......................................................................................................................... 11
Fig. 10 Relay wiring connections for Magic Chef equipment (PE Series). Requires R8222B1067Relay if outdoor section heas reset shunt relay and malfunction light indicator isdesired on thermostat. ............................................................................................................. 11
Fig. 11 Relay wiring connections for Mammoth. Requires R8222B1067 Relay if outdoor sectionhas reset shunt relay and malfunction light indicator is desired on thermostat ....................... 11
Fig. 12 Relay wiring connections for PC8900 in heat pump applications requiring separateY1 and W1 terminals with a heating changeover. ................................................................... 12
Fig. 13 Relay wiring connections for PC8900 in heat pump applications requiring separateY1 and W1 terminals with a cooling changeover. .................................................................... 12
Fig. 14 Key to hookup symbols. .......................................................................................................... 13
Fig. 15 NEMA Class 2 transformer band. ............................................................................................ 14
Wiring DiagramsFig. 16 Internal schematic and typical wiring diagram for T841A1308. ............................................... 15
Fig. 17 Internal schematic and typical wiring diagram for T841A1555. ............................................... 16
Fig. 18 Internal schematic and typical wiring diagram for T841A1712 and T841A1738. .................... 16
Fig. 19 Internal schematic and typical wiring diagram for T841B1000. ............................................... 17
Fig. 20 Internal schematic and typical wiring diagram for Y594G1161. .............................................. 17
Fig. 21 Internal schematic and typical wiring diagram for Y594G1633. .............................................. 18
Fig. 22 Internal schematic and typical wiring diagram for Y594G1419 and Y594G1476. ................... 18
Fig. 23 Internal schematic and typical wiring diagram for Y594G1763. .............................................. 19
Fig. 24 Internal schematic and typical wiring diagram for Y594R1797. ............................................... 19
Fig. 25 Internal schematic and typical wiring diagram for Y594R1425. ............................................... 20
Fig. 26 Internal schematic and typical wiring diagram for T8611G1004 and T8611G1103. ................ 21
Fig. 27 Typical wiring diagram for T8611M7008. ................................................................................ 22
Fig. 28 Typical wiring diagram for T8611R1000. ................................................................................. 23
Fig. 29 Typical wiring diagram for T8011R and T8411R. .................................................................... 23
Fig. 30 Typical wiring diagram for T8511G.......................................................................................... 24
Fig. 31 Typical wiring diagram for T8611G2002 and T8611G2028..................................................... 25
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE
70-6627 • 120
Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.
Home and Building Control Home and Building ControlHoneywell Inc. Honeywell Limied — Honeywell LimitéeHoneywell Plaza 155 Gordon Baker RoadP.O. 524 North York, OntarioMinneapolis, MN 55408-0524 M2H 3N7
70-6627 Rev. 12-98 ©Honeywell Inc. 1998 All rights reserved www.honeywell.com
top related