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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



• 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



• 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



• 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)


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


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


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


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


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


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)



Y594R1763 TRADELINE®; includesT874R1954/Q674L1827. ReplacesY594R1136. Auto fan in EM.HT. (Fig. 23).

W,Y,G,R,O,B,X2,T,F,U


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


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


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


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


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


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


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


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


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


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


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


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.



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


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


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


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


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


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.


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.


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.


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.


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


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


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.


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.



Common

Power

Emergency Heat

M13241


Black C

Red R

A L

E



Common

Power

Emergency Heat

M13236


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.



Indoor Power

System Monitor

M13237


VR R

L

L or

X1


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.



Power

System Monitor

M13238


VR R

L

L or

X1 or

F



Power

System Monitor

M13239


R R

X1

L or

X1



Power

System Monitor

M13240


R1 or

R R

L or

X

L or

X1


70-6627 • 12


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


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.


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.


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.


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


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


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


Fig. 20. Internal schematic and typical wiring diagram for Y594G1161.

H1

FALL

H2

FALL

CHANGEOVER

RISE

C1RISE

L1 (HOT)L2

1


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)



H2

FALL

H2 ANTICIPATOR


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


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



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



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


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


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



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


70-6627 • 22

Fig. 27. Typical wiring diagram for T8611M7008.

L1 (HOT)

L2

X1

X2

CHECKLED(YELLOW)



TO C

TO R X1

X2

CHECKLED(YELLOW)

SWITCHINGDEVICE


X1

X2


SWITCH


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


POSSIBLE CHECK LED CIRCUITS:



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



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


70-6627 • 23

Fig. 28. Typical wiring diagram for T8611R1000.


Fig. 29. Typical wiring diagram for T8011R and T8411R.

L1 (HOT)

L2

1

1

2

2


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


REMOVE JUMPER FOR SYSTEM WITH ISOLATED STAGE 1 HEATING AND COOLING CONNECTIONS.

DENOTES THERMOSTAT TO SUBBASE INTERCONNECT.



POWERSUPPLY

FANSWITCH

ON

AUTO

EM. HT.LED(RED)

AUX. HT.LED (GREEN)

HIGHLIMIT

HIGHLIMIT

HEAT 1COMPRESSORCONTACTOR

DEFROST CONTROL



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.


L1 (HOT) L2

1

1

2


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


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.


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.


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.


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.


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.


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


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.





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


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


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


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.



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.



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


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


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


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)



TO C/X

TO R X1

X2

CHECKLED(YELLOW)

SWITCHINGDEVICE


X1

X2


SWITCH


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


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


III


Common E

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


EM. Heat


LED Indication


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


III


Common E

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


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


III


Common C

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


EM. Heat


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


III


Common E

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


EM. Heat


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


III


Common F

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


EM. Heat


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


III


Common E

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


EM. Heat


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


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


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


Common A

Power

1st Stg.Compressor

2nd Stg.Compressor

2nd Stg.Heat Relay

Fan

C/O ValveCool

C/O ValveHeat


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


III


Common A

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


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


III


Common E

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


EM. Heat


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


III


Common A

Power

Compressor

1st Stg. Heat

Aux. Heat

Fan

C/O ValveHeat


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


EM. Heat


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


III


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


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


III


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


III


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


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


EM. Heat


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


III


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


III


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


Em. Heat


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


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


EM. Heat


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


III


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


– 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


EM. Heat


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


III


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


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


III


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


EM. Heat

OutdoorSensor

OutdoorThermostat

Defrost Control


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


III


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


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


EM. Heat


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


III


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


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


III


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


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


III



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


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


III


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


III


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


III


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


III


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 –


G G G G G G G G G G

T T T T


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


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


III


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


Em. Heat

MultipleHeat Loads

LED Indication

Defrost

2nd StageCompressor

2nd StageCool I

M13244


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


III


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


Em. Heat


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


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


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


III



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


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


III


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


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


Common C

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

1712

T8611

R1000

T8611

G1004

T8411

R1002

T8411

R1028

PC89

00/

W89

00B10

02


III


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


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


III


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


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


III


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


LED Indication

2nd StageCompressor

2nd Stage Cool

M13223


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


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


III


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 –


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


III


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


Em. Heat


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


III


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


III


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


Em. Heat

Thermistor


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


Common D

Power Indoor

Common Outside

Common Outside

Compressor Stage 1

Compressor Stage 2

Auxiliary Heat

Fan

C/O ValveCool

C/O ValveHeat


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.


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


III


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


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


III


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


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


III



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


EM. Heat


LED Indication


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


III


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


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


III



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


EM. Heat


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 –


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


III


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


E

EM. Heat


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


– 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


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


III


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


– 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


Em. Heat


LED Indication

2nd StageCompressor

2nd StageCool

T8011

R1006

T8011

R1014

FunctionExisting

Terminals T841A

1712

T8411

R1002

T8411

R1028

PC89

00/

W89

00B10

02


III



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


– 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


Em. Heat


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


III


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


Em. Heat


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


III



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


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


III




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


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


III



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)


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


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


III




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 –


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


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


III


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 –


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


– – – – 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


Em. Heat


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


III


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,


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)


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


Em. Heat


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


III



or relays.D Terminal must be connected to the transformer common. M13201


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


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


III


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


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


III


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


– – – – 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


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


III


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 –


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


X1 or

X2 – – – X1 X2 – – – X1 X2 –

– – – – – – – – – W2

– – – – – – – – – Y2

ChronothermIV

70-6627 • 99


Common B

Power

Compressor

1st StageHeat

Aux. Heat

Fan

C/O ValveHeat

C/O ValveCool


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


III


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)


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


Outdoor Stat


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


III


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,


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


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


III


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


Em. Heat


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


III



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


III



or relays.

Common E

Power

Compressor

1st StageHeat

AuxiliaryHeat

Fan

C/O ValveHeat

C/O ValveCool


EM. Heat


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


Em. Heat


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


III



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 –


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


Em. Heat


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


III


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


– – – – – – – – 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


Em. Heat


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


III


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


– 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


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


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


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


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


Em. Heat


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


III



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


Em. Heat


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


III


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


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


III


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


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


III


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 –


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


III



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


EM. Heat


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


Em. Heat


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


III



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


Em. Heat


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


III


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


Em. Heat


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


III


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,


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


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


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. 22 Internal schematic and typical wiring diagram for Y594G1419 and Y594G1476. ................... 18


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


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

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