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Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual
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Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat User Manual

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Selection Guide

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Summary of Contents for Honeywell Heat/1Cool - T841A1563 Premier 2 Stage Thermostat

  • Page 1: Heat Pump

    Heat Pump Thermostat & Cross Reference Selection Guide...
  • Page 2 Rapid advances in heat pump technology, resulting in high efficiency units and lower operating costs, have made the heat pump a popular choice with consumers. Honeywell heat pump thermostats are ideal for all your heat pump applications and provide the highest level of comfort available.

  • Page 3: Table Of Contents

    Heat pumps require thermostats with special features. This Cross Reference/Selection Guide contains information about all aspects of selecting a Honeywell replacement thermostat for any heat pump application. Table 1 shows a list of the Honeywell TRADELINE® and SUPER TRADELINE® OS numbers and their specifications. Immediately following the table are more detailed descriptions and related application information.

  • Page 4: Heat Pump Thermostat Model Specifications

    HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Heat Pump Thermostat Model Specifications Table 1. Model Number Specifications. Stages Order Systems Number Switch Indication Description Terminals Heat Cool Changeover T841A1308 TRADELINE®; fixed anticipation. For W2,Y,G,R, EM.HT.- Manual heat EM.HT. use where E and W2 may be jumpered. O,B,L,E,X HEAT-OFF- or cool...
  • Page 5 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Table 1. Model Number Specifications (continued). Stages Order Systems Number Switch Indication Description Terminals Heat Cool Changeover Y594R1763 TRADELINE®; includes W,Y,G,R,O, EM.HT.- Manual cool EM.HT., T874R1954/Q674L1827. Replaces B,X2,T,F,U HEAT-OFF- AUX.HT. Y594R1136. Auto fan in EM.HT. COOL (Fig.
  • Page 6 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Table 1. Model Number Specifications (continued). Stages Order Systems Number Switch Indication Description Terminals Heat Cool Changeover T8611G2002 TRADELINE®; Full seven-day program Y1,W1,W2, EM.HT.- Automatic CHECK capability. Programmable fan and back G,E,L,R,C, HEAT-OFF- FAIL lighting features.

  • Page 7: Thermostat Descriptions And General Information

    Y594R1763 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 Thermostats T8411 Electronic Heat Pump Thermostats The T8411 models control two-stage heat and one-stage cool in heat pump systems, using manual changeover only.
  • Page 8 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE T8511 Deluxe Electronic Heat Pump Thermostats The T8511 models control two-stage heat and one-stage cool in heat pump systems, using manual or automatic changeover. First stage heat anticipation is fixed; second stage heat anticipation is selectable at 3, 6, or 9 cph. Setpoints are permanently held in memory (no batteries required) and retained during power failures.
  • Page 9 Unlike the Chronotherm III models, the Adaptive Intelligent Recovery control can be turned off in the Installer Set-up mode in the Chronotherm IV thermostat. Honeywell does not recommend this because the auxiliary heat comes on when the program time begins, and runs continuously until the setpoint is reached.
  • Page 10 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE T8611M Equipment Equipment Function Terminals Terminals Power 1st Stage Cool 2nd Stage Cool 1st Stage Heat 2nd Stage Heat Transformer Common R8222B Relay Heating Changeover M13231 Fig. 2. Installing an R8222B Switching Relay on heat pumps requiring heating mode changeover. Heat Pumps with Cooling Mode Changeover Here 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...
  • Page 11 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Changing Fan Operation in Emergency Heat Mode for Electronic Thermostats In the emergency heat mode (system switch in EM. HT. position), the thermostat controls the fan operation with a call for first 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.
  • Page 12 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE New Terminal Existing Control Designation Equipment Function Terminal Designation Common Black Power Emergency Heat M13241 Fig. 6. Relay wiring connections for Evcon/Coleman equipment (3200, 3300). Requires R8222B1067 Relay to operate system. Equipment requires normally energized emergency heat. New Terminal Existing Control Designation...
  • Page 13 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE New Terminal Existing Control Designation Equipment Function Terminal Designation Power System Monitor M13238 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.
  • Page 14 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE PC8900 Equipment Equipment Function Terminals Terminals Transformer Common Power 1st Stage Heating Y1/W1 1st Stage Cooling Changeover Valve Aux. 2nd Stage Heating Emergency Heat 2nd Stage Cooling M13233 Fig. 12. Relay wiring connections for PC8900 in heat pump applications requiring separate Y and W terminals with a heating changeover.

  • Page 15: Understanding Circuits

    HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Understanding Circuits To understand wiring diagrams, it is important to know what all the symbols mean and how to trace the path of the circuits 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-COOL AUTO-HEAT-EM.
  • Page 16 NEMA Standard Transformers Give You Better Control UL 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 Electrical Manufacturer’s Association (NEMA).

  • Page 17: Typical System Hookup Diagrams

    HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Typical System Hookup Diagrams (HOT) ODT 1 RTD 1 EHR 1 SWITCH RTD 2 FALL AUTO ODT 2 H1/C1 ANTICIPATOR EHR 2 RTD 3 FAN RELAY H2 ANTICIPATOR AUX. HT. RTD 1 LED (GREEN) EM.
  • Page 18 HEAT PUMP TH ERMOSTAT CROSS REFERENCE/SELECTION GUIDE FAN RELAY AUX. HEAT FALL RELAY AUX. HEAT LED (GREEN) ANTICIPATOR SWITCH EM. HEAT H1/C AUTO LED (RED) ANTICIPATOR COMPRESSOR MONITOR (HOT) OUTDOOR THERMOSTAT SYSTEM SWITCH EM. HT. HEAT FALL OUTDOOR THERMISTOR COOL RESET COOL CHANGEOVER RELAY...
  • Page 19 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE H1/C1 ANTICIPATOR HEAT RELAY 1 HEAT RELAY 2 FALL HEAT CHANGEOVER FAN SWITCH VALVE AUTO FAN RELAY (HOT) SYSTEM SWITCH HEAT H2 ANTICIPATOR COOL FALL COMPRESSOR CONTACTOR COOL CHANGEOVER VALVE M6068A POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. Fig.
  • Page 20 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE FAN SWITCH FALL H1 ANTICIPATOR COOL CHANGEOVER VALVE AUTO B RELAY FAN RELAY (HOT) SYSTEM SWITCH ANTICIPATOR EM. HT. RELAY FALL EM. HT. HEAT EM. HT. LED (RED) AUTO RISE COOL AUX. HEAT LED (GREEN) AUX.
  • Page 21 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE FAN RELAY AUX. HEATER AUX. HEAT RELAY AUTO LED (GREEN) COMPRESSOR EM. HEAT FALL MONITOR LED (RED) SWITCH (HOT) FALL SYSTEM SWITCH EM. HEAT HEAT OUTDOOR SENSOR OUTDOOR THERMOSTAT COOL COOL COMPRESSOR CHANGEOVER CONTACTOR VALVE POWER SUPPLY.
  • Page 22 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE W3 RELAY COOL CHANGEOVER VALVE COMPRESSOR MONITOR FAN RELAY ANTICIPATOR SWITCH AUTO C ANTICIPATOR (HOT) EM. HT. AUX. HT. RELAY FALL LED (RED) SYSTEM SWITCH AUX. HT. LED (GRN) EM. HT. RELAY EM. HT. HEAT ANTICIPATOR FALL...
  • Page 23 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE (HOT) POWER HIGH SUPPLY LIMIT AUX. HT. SWITCH LED (GREEN) EM. HT. (RED) THERMO- SUBBASE AUTO MONITOR AUX. HT. STAT LOGIC/ RELAY LOGIC CONTROL CIRCUIT CIRCUIT HEAT 2 FAN RELAY EM. HT. RELAY SYSTEM SWITCH EM.
  • Page 24 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE (HOT) POWER HIGH SUPPLY LIMIT AUX. HT. SWITCH LED (GREEN) EM. HT. (RED) THERMO- SUBBASE AUX. HT. AUTO MONITOR STAT LOGIC/ RELAY LOGIC CONTROL CIRCUIT CIRCUIT HEAT 3 STAGE 2 RELAY HEAT 2 EM. HT. RELAY FAN RELAY SYSTEM SWITCH...
  • Page 25 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE (HOT) POWER HIGH SUPPLY LIMIT EM. HT. AUX. HT. MONITOR LED (GREEN) (RED) SWITCH AUX. HT. RELAY THERMO- SUBBASE STAT LOGIC/ LOGIC CONTROL AUTO CIRCUIT CIRCUIT HEAT 2 EM. HT. RELAY STAGE 1 HEAT RELAY FAN RELAY SYSTEM SWITCH...
  • Page 26 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE (HOT) L2 POWER COMPRESSOR SUPPLY CONTACTOR HEAT AUXILIARY HEAT RELAY EMERGENCY THERMOSTAT HEAT RELAY LOGIC COMPRESSOR CONTACTOR FAN RELAY CHANGEOVER VALVE COMPRESSOR CHECK LED (RED) MONITOR POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. TO R O/B IS FIELD CONFIGURABLE TO SELECT ENERGIZED IN HEATING OR COOLING.
  • Page 27 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE (HOT) L2 POWER COMPRESSOR SUPPLY CONTACTOR HEAT AUXILIARY HEAT RELAY EMERGENCY THERMOSTAT HEAT RELAY LOGIC COMPRESSOR CONTACTOR CHANGEOVER VALVE FAIL LED (RED) FAN RELAY POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD COMPRESSOR PROTECTION AS REQUIRED. CHECK LED (RED) MONITOR WIRES TO OT TERMINALS SHOULD NOT SHARE CABLE WITH OTHER...

  • Page 28: Electronic Thermostat (T8011, T8411, T8511, T8611) Sequences Of Operation

    HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Electronic Thermostat (T8011, T8411, T8511, T8611) Sequences of Operation T8011 Programmable Heat Pump Thermostat and T8411 Electronic Heat Pump Thermostat Sequence of Operation The Fan, Heat and Cool outputs are relay controlled. A loss of ac power, or a change in the SYSTEM switch setting can cause the outputs to turn off.

  • Page 29: Sequence Of Operation

    HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE T8511 Deluxe Electronic Heat Pump Thermostat Sequence of Operation The thermostat energizes specific terminals depending on the Fan and System Settings. The LCD will display symbols and words to report the condition of system. See Table 3 for specific information. Table 3.
  • Page 30 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE T8611 Chronotherm IV Deluxe Programmable Heat Pump Thermostat Sequence of Operation The thermostat energizes specific terminals depending on the Fan and System Settings. The LCD will display the time, room temperature, system and fan selection. Symbols will be displayed when the heating, cooling or fan is energized. See Table 4 for specific information.

  • Page 31: Thermostat Manufacturer Cross Reference

    HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Thermostat Manufacturer Cross Reference MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT American Stabilis HP-1 T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011, T8611R, T8611G HP-1EF T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011, T8611R, T8611G HP-10EF T841A1712, Y594R1425, Y594G1419, T8411, T8511, T8011,...
  • Page 32 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT General Electric 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...
  • Page 33 T841A1068, Y594R1763, T8411, T8511, T8011, T8611 (3AAT86B1A1), BAY28X139, BAY28X141, BAY28X153A, (3AAT83F1B2) BAYSTAT240 (3AAT80A1A1) BAYSTAT339 T841A1068, Y594R1763, T8411, T8511, T8011, T8611 (Y594R1284) BAYSTAT024B T8611M, PC8900A1007/W8900B1002 TAYSTAT500 T8611R, T8611G See pages 97-100 for hookup details. Trane thermostats manufactured by General Electric or Honeywell. 70-6627 • 31...
  • Page 34 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE MANUFACTURER MODEL NUMBER HONEYWELL REPLACEMENT White Rodgers IF56-444 T8034C1234 Single-Stage Heat Pump 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...

  • Page 35: Tips For Using This Heat Pump Cross Reference

    This cross reference, alphabetized by equipment or thermostat manufacturer, provides the information needed to choose and wire the Honeywell electromechanical, Chronotherm III, or electronic heat pump thermostats in new installations and replacement applications. It also gives you the opportunity to upgrade the system from a standard to a deluxe thermostat for improved performance and from manual changeover to the convenience of automatic heat/cool changeover and to a Chronotherm®...

  • Page 36: Wiring Connections For Honeywell Heat Pump Thermostats

    HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Electronic Replacement or Upgrade Chronotherm Chronotherm ® Electronmechanical Function Common Power Compressor Y1/W1 1st Stage – – – Heat Auxiliary Aux. Heat C/O Valve Heat C/O Valve Cool System Monitor/ – Sytem Defrost Em. Heat Multiple Heat Loads LED Indication...
  • Page 37 HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Terminal must be connected to the transformer common. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. Configure O/B (Select Models) in Installer Setup. Optional LED indication activated with completed circuit on X1 and X2 terminals. If separate Y1 and W1 terminals are required, install R8222D1014;...

  • Page 38: Manufacturer Cross Reference

    When W2 is not used, configure W2 cycle rate to NC. Field-installed X2 to X jumper. LED is energized when terminal is powered. M13172 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1241 (D99458003) T8611R1083 (D9807605) T874R1194/Q674L1249...
  • Page 39 AMERICAN STABILIS TYPICAL THERMOSTATS AND SUBBASES: HP1, HP1EF, HP10EF, HP15 Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stg. Heat – – – Aux. Heat Aux. C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost EM.
  • Page 40 Terminal is for multiple second stage loads such as contactors, page 12. sequencers, or relays. Available on T8611R1000 only. Terminal X or C must be connected to transformer common. M13143 Do not remove factory-installed jumper. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T8611R1182 T841A1597 70-6627 • 38...
  • Page 41 Optional CHECK LED on T8611G1004. See Fig. 26. L terminal is powered continuously when thermostat is in Em. Ht. position. Field-installed X2 to X jumper (provided). M13144 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1142 (1506726) T841A1159 (1505726) T874D1603...
  • Page 42 Terminal is for multiple second stage heating loads such as contactors, LED is energized when terminal is powered. sequencers, or relays. L terminal is powered continuously when thermostat is in Em. Ht. position. M13145 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874R1129/Q674L1181 T872N1036/Q672F1299 T874R1152/Q674L1207 T872N1164/Q672L1185 T874N1024/Q674F1261 70-6627 •...
  • Page 43 L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal X (C, X1, C1) must be connected to transformer common. Do not remove factory-installed jumper. M13146 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1166/Q672F1125 T874J1010/Q674J1084 (34427DP124/P272-2471/34427DP126,P272-1879) T872G1174/Q672F1125...
  • Page 44 L terminal is powered continuously when thermostat is in Em. Ht. position. or relays. Terminal X (C) must be connected to transformer common. M13147 Do not remove factory-installed jumper. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874G1121 (HH07AT161) T841C1009 (HH07AT180) T874R1319/Q674B1281 (42QH400083/42QH400103) T872G1075/Q672J1054 (HH07AT171/HH93AZ173)
  • Page 45 PC8900/W8900B1002 application. See page 9 for wiring diagram. L terminal is continuously energized in Em. Heat Mode. LED is energized when terminal is powered. M13148 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874D1074/Q674F1030 (HHO7AT172/HH93AZ174) T874D1074/Q674F1063 (HH07AT172/HH93AZ181) 70-6627 • 43...
  • Page 46 For second stage compressor LED indication, jumper X2 to Y2 on Q674. For emergency heat LED indication, jumper X2 to E. For system monitor M13149 LED indication, connect L to X2. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874D1264/Q674L1116 (HH07AT173/HH93AZ171) 70-6627 • 44...
  • Page 47 If 2nd stage heat is auxiliary (electric resistive), connect auxiliary stage to W3. LED is energized when terminal is powered. M13150 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874S1001/Q674F1501 (HH07AT201/HH93AZ215) T8611T7000 (HH07AX112) T8611T7018 (HH07AX113) 70-6627 • 45...
  • Page 48 CRISPAIRE/MARVAIR Electronic Replacement or Upgrade ® Chronotherm Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stg. Heat – – – – – Aux. Heat Aux. C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost EM. Heat 2nd Stage –...
  • Page 49 Terminal X (C) must be connected to transformer common. terminal. Do not remove factory-installed jumper. L terminal is powered continuously when thermostat is in Em. Ht. position. LED is energized when terminal is powered. M13152 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874G1915/Q674F1212 T874R1921/Q674L1207 70-6627 • 47...
  • Page 50 When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13153 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874G1915/Q674F1410 70-6627 • 48...
  • Page 51 ENERSTAT Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power 1st Stage Y/W1 Compressor 1st Stage – – – – Heat 2nd Stage – Aux. Aux. Heat 3rd Stage – – – – – – – –...
  • Page 52 EVCON/COLEMAN MODELS: 3200, 3300 Chronotherm ® Electronic Replacement or Upgrade Existing Function Terminals Common BLCK Power 1st Stg. Heat Compressor Aux. Heat C/O Valve Cool C/O Valve – Heat System Monitor/ System Defrost EM. Heat (10) LED Indication – – –...
  • Page 53 R8222B1067 relays required to operate system. Equipment requires normally When W2 is not used, configure W2 cycle rate to NC. energized emergency heat. See page 10 for wiring diagram. M13204 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T8300A1029/Q6300A1029 (3300-382/3300-383) 70-6627 • 51...
  • Page 54 L terminal is powered continuously when thermostat is in Em. Ht. position. To eliminate automatic fan in emergency heat mode, connect switching M13157 relay as shown on page 9. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874G1501 (3600-375)/Q674F1378 T874G1576 (3600-373)/Q674F1402 T874R1368 (3600-368)/Q674L1421...
  • Page 55 Models 3700, 3900 and 6500 require connection of O and B terminals. When W2 is not used, configure W2 cycle rate to NC. Optional CHECK LED on T8611G1004. See Fig. 26. M13174 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T8611R1059 (3600A-381) 70-6627 • 53...
  • Page 56 Install R8222D1014 (see page 12) if separateY1 and W1 terminals are L terminal is powered continuously when thermostat is in Em. Ht. position. required. M13158 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872C/Q672L1102 T874D1462/Q674E1205 (THTX-220-AOHB; 88-58-00550-001) T874C/Q674L1090 T874R1269/Q674L1066 (THTX-120-HEHB;...
  • Page 57 FLORIDA HEAT PUMP TYPICAL “LT” UNITS Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Aux. Heat Aux. C/O Valve – Heat C/O Valve Cool System Monitor/ System Defrost EM.
  • Page 58 L terminal is powered continuously when thermostat is in Em. Ht. position. When W2 is not used, configure W2 cycle rate to NC. terminal. M13179 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1324 (AT12124) 70-6627 • 56...
  • Page 59 GENERAL ELECTRIC Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – – – Heat Aux. Heat Aux. C/O Valve – – – – Heat C/O Valve Cool System Monitor/ System Defrost EM.
  • Page 60 GENERAL ELECTRIC Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Aux. Heat Aux. C/O Valve – Heat C/O Valve Cool System Monitor/ System Defrost EM. Heat – –...
  • Page 61 Terminal must be connected to the transformer common. Do not remove factory-installed jumper. When W2 is not used, configure W2 cycle rate to NC. Optional CHECK LED on T8611G1004. See Fig. 26. M13182 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T841A1118 70-6627 • 59...
  • Page 62 LED is energized when terminal is powered. If provided on original equipment. Terminal X (C) must be connected to transformer common. L terminal is powered continuously when thermostat is in Em. Ht. position. M13217 TYPICAL THERMOSTATS AND SUBBASES—HONEYWELL MODEL NUMBER T874G1469/Q674F1345 70-6627 • 60...
  • Page 63 Terminal is for multiple second stage loads such as contactors, sequencers, or relays. When W2 is not used, configure W2 cycle rate to NC. Terminal X (C) must be connected to transformer common. M13218 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1232/Q672F1224 T874G1105/Q674F1097 T874G1105/Q674F1170 70-6627 • 61...
  • Page 64 L terminal is powered continuously when thermostat is in Em. Ht. position. When W2 is not used, configure W2 cycle rate to NC. terminal. Do not remove factory-installed jumper. M13186 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T841A1084 T872R1008/Q672B1046 T874G1444/Q674J1027 T874R1350/Q674L1181...
  • Page 65 When W2 is not used, configure W2 cycle rate to NC. operation. If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. Select O/B (select models) in Installer Setup. M13187 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872A-D/Q672F1000 T872A-D/Q672F1042 T874A-D/Q674F1006 T874A-D/Q674F1048...
  • Page 66 If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal X (C) must be connected to transformer common. M13188 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER CT70A1001 CT8611R1006 70-6627 • 64...
  • Page 67 LED is energized when terminal is powered. Configure O/B (select models) in Installer Setup. L terminal is powered continuously when thermostat is in Em. Ht. position. Leave factory-installed jumper in place. M13189 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874R1566/Q674L1538 T841A1068 T874R1053/Q674L1140 70-6627 • 65...
  • Page 68 Terminal X (C) must be connected to transformer common. L terminal is powered continuously when thermostat is in Em. Ht. position. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) M13190 terminal. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872N1002/Q672F1133 T872N1028/Q672F1216 T874N1016/Q674F1220 T874N1040/Q674F1261...
  • Page 69 Optional LED indication activated with completed circuit on X1 and L terminal is powered continuously when thermostat is in Em. Ht. position. X2 terminals. If Y2 is used, T8611M may be used as replacement. M13244 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874R1491/Q674L1553 T874G1600/Q674F1428 T8085R1015/Q682L1010 T8300A1003/Q6300A1010...
  • Page 70 L terminal is powered continuously when thermostat is in Em. Ht. position. If multiple auxiliary heat loads are used, connect to W2 (W8900B) terminal. M13159 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T8611R1190 (HQ1149375HW) T874R1947/Q674L1819 (HQ1149406HW/HQ1149407HW)
  • Page 71 LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal X (C) must be connected to transformer common. M13185 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1134 (HQ1147021HW) T874R1673/Q674L1132 (HAXB004TW01/711598) T8141A1048...
  • Page 72 INTERTHERM/MILLER/NORDYNE Electronic Replacement or Upgrade ® Chronotherm Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – – – Heat Aux. Heat Aux. C/O Valve Heat C/O Valve – Cool System Monitor Em. Heat LED Indication –...
  • Page 73 INTERTHERM/MILLER/NORDYNE Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Aux. Heat Aux. C/O Valve Heat C/O Valve Cool System Monitor Em. Heat Multiple Aux. Heat Loads LED Indication –...
  • Page 74 INTERTHERM/MILLER/NORDYNE Electronic Replacement or Upgrade ® Chronotherm Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – – – Heat Auxiliary Aux. Heat Outdoor Thermistor Em. Heat C/O Valve Cool System Monitor/ System Defrost For best performance, use a NEMA rated transformer. To eliminate auto fan in EM.
  • Page 75 Terminal must be connected to the transformer common. terminal. Do not remove factory-installed jumper. When W2 is not used, configure W2 cycle rate to NC. M13223 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1109/Q672F1117 (080-13708-52/080-13708-53) T874G1147/Q674F1139 70-6627 • 73...
  • Page 76 Leave factory-installed jumper in place. When W2 is not used, configure W2 cycle rate to NC. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, M13193 or relays. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874R1814/Q674L1132 70-6627 • 74...
  • Page 77 Field-installed E to W2 (Aux) jumper required. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. M13161 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1026/Q672E1019 T872G1067/Q672E1142 (P-8-11222) T872R1040/Q672B1202 (P-8-11221) T874R1024/Q674B1160...
  • Page 78 LENNOX Electronic Replacement or Upgrade ® Chronotherm Chronotherm Electromechanical Existing Function Terminals Common – – – – Power V VR V VR V Compressor Y1/W1 1st Stage – – Heat Auxiliary Aux. Heat C/O Valve – – Cool SystemMonitor/ – –...
  • Page 79 Do not remove factory-installed jumper. L terminal is powered continuously when thermostat is in Em. Ht. position. Optional Check LED on T8611G1004. See Fig. 26. M13163 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1067/Q672L1029 (P-8-11222) T874C1448/Q674L12165 (24F5101/24F5901) T872R1024/Q672L1003...
  • Page 80 IMPORTANT: DISCONNECT POWER SUPPLY BEFORE BEGINNING WIRING. ATTACH BOTH WIRES (FORMER STEP VR AND V) TO REPLACEMENT THERMOSTAT R TERMINAL TIE FORMER OUTSIDE REMOVE FORMER STEP STEP REPLACEMENT TRANSFORMER COMMON OUTSIDE THERMOSTAT/ TO NEW TRANSORMER TRANSFORMER FORMER SUBBASE COMMON TAPE OFF YELLOW INDOOR BLOWER RELAY...
  • Page 81 LED is energized when terminal is powered. Terminal must be connected to the transformer common. L terminal is powered continuously when thermostat is in Em. Ht. position. W1 to Y1 jumper required. M13156 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1323/Q672L1201 T874D1033 T874D1199 T874D1207/Q674L1199 T874D1207/Q674L1389 70-6627 •...
  • Page 82 L terminal is powered continuously when thermostat is in Em. Ht. position. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. M13164 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) 70-6627 •...
  • Page 83 LED) on TRADELINE replacement thermostats, see page 10. Tape off L terminal is powered continuously in Emergency Heat Position. if LED indication is not desired. M13165 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874C1448/Q674L1355(24F5101/31F3201) T874C1448/Q674L1165(24F5101/24F5901) T874G1014/Q674F1113(24F5801/24F6201)
  • Page 84 LUXAIRE (MONCRIEF/FRASER JOHNSTON) Electronic Replacement or Upgrade ® Chronotherm Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Auxiliary Aux. Heat C/O Valve – Heat C/O Valve Cool System Monitor/ – – – System Defrost EM.
  • Page 85 MAGIC CHEF “PB” SERIES EQUIPMENT Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power 1st Stage Y1/W1 Cool 1st Stage – Heat 2nd Stage Heat C/O Valve – Heat C/O Valve Cool System Monitor/ System Defrost EM.
  • Page 86 MAGIC CHEF “PE” SERIES EQUIPMENT Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Aux. Heat Aux. C/O Valve – Heat C/O Valve Cool System Monitor/ System Defrost EM.
  • Page 87 See page 11. LED is energized when terminal is powered. Terminal X (C) must be connected to transformer common. L terminal is powered continuously in Emergency Heat Position. M13169 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T834C2135 T841B1042 T874G1659/Q674C1330 T874H1096/Q674C1330 T874Y1005/Q674E1353 70-6627 •...
  • Page 88 Optional CHECK LED on T8611G1004. Connect L to X1; jumper X2 to C. Field-installed X2 to X jumper. L terminal is powered continuously when thermostat is in Em. Ht. position. M13194 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T834C2135 (71116901) T841B1042 (71117001) 70-6627 • 86...
  • Page 89 L terminal is powered continuously when thermostat is in Em. Ht. position. X2 terminals. Terminal must be connected to the transformer common. M13195 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874G1378/Q674C1124 T874G1659/Q674C1330 (71115201) T874H1096/Q674C1330 (71115201) 70-6627 • 87...
  • Page 90 LED indication with completed circuit on X1 and X2 terminals. Terminal must be connected to the transformer common. L terminal is powered continuously when thermostat is in Em. Ht. position. M13196 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1183 T841A1522 T841A1548 (24015808)
  • Page 91 Optional LED indication activated with completed circuit on X1 and Terminal must be connected to the transformer common. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) X2 terminals. M13197 terminal. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T8611R1174 70-6627 • 89...
  • Page 92 RHEEM/RUUD COOLING CHANGEOVER (PRE 11/85) (PCA, PNA, PNB TYPICAL) Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – Heat Aux. Heat Aux. C/O Valve Heat C/O Valve Cool System Monitor Em.
  • Page 93 RHEEM/RUUD PCB, PFA, PGB, PGA HEATING CHANGEOVER (AFTER 11/85) RPCB, RPFA Electronic Replacement or Upgrade ® Chronotherm Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Aux. Heat Aux. C/O Valve Heat C/O Valve –...
  • Page 94 SECO TA2000, TA2040, TA2010 TA2050 Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Aux. Heat Aux. C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost Em. Heat Multiple Aux.
  • Page 95 Configure O/B (select models) in Installer Setup. Terminal must be connected to the transformer common. Tape off. Thermostat replaces outdoor reset with improved zero droop Replace existing thermistor with Honeywell C815A1005. When W2 is not used, configure W2 cycle rate to NC. performance.
  • Page 96 LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Do not remove factory-installed jumper. M13200 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1399 (HPL1404) 70-6627 • 94...
  • Page 97 L terminal is powered continuously when thermostat is in Em. Ht. position. LED is energized when terminal is powered. Terminal must be connected to the transformer common. M13201 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1357 T841A1365 (121000012) 70-6627 • 95...
  • Page 98 If separate Y1 and W1 terminals are required, install R8222D1014; see page 12. Optional LED indication activated with completed circuit on X1 and M13202 X2 terminals. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872C1525/Q672F1182 (HCD-2/HCB-1) T874C1224/Q674F1071 (63600-002-09/63600-002-11) 70-6627 • 96...
  • Page 99 L terminal is powered continuously when thermostat is in Em. Ht. position. Optional LED indication with completed circuit on X1 and X2 terminals. M13225 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1407 (ASYSTAT652) T874R1939 (ASYSTAT-651A)/Q674L1801 (THT1225)
  • Page 100 TRANE/AMERICAN STANDARD Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – – Heat Aux. Heat Aux. C/O Valve – – – Heat C/O Valve Cool System Monitor/ System Defrost Outdoor Stat LED Indication –...
  • Page 101 TRANE/AMERICAN STANDARD Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Aux. Heat W or X1 Aux. C/O Valve – Heat C/O Valve Cool System Monitor/ System Defrost Outdoor Sensor Outdoor Stat...
  • Page 102 Terminal is for multiple auxiliary heat loads such as contactors, sequencers, terminal. or relays. Configure O/B (select models) in Installer Setup. Do not remove factory-installed jumper. M13228 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1407 (ASYSTAT652) T874R1053/Q674L1140 T8611G1038 (THT-0603) T841A1530 (ASYSTAT652A) T874R1426/Q674L1496 (BAYSTAT339/WY28X0112)
  • Page 103 L terminal is powered continuously when thermostat is in Em. Ht. position. To eliminate automatic fan in emergency heat mode, connect switching relay M13205 as shown on page 9. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1456 (41-20796-65) T874R1830/Q674L1504 (41-20769-64) 70-6627 • 101...
  • Page 104 LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal must be connected to the transformer common. M13209 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER OR CUSTOMER PART NUMBER T841A1373 T8141A1105 GE 3AAT80...
  • Page 105 Terminal is for multiple auxiliary heat loads such as contactors, sequencers, Do not remove factory-installed jumper. or relays. L terminal is powered continuously in Em. Ht. position. M13222 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1265/Q672F1265 T874G1287/Q6741253 T872G1281/Q672F1265 T874G1543/Q674F1345 (403-197)
  • Page 106 LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal must be connected to the transformer common. M13210 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1034/Q672F1141 T872G1034/Q672F1091 T872G1034/Q672F1257 T872G1034/Q672J1013...
  • Page 107 WESTINGHOUSE TYPICAL HB, HI RELI, HLO Electronic Replacement or Upgrade ® Chronotherm Chronotherm Electromechanical Existing Function Terminals Common Power 1st Stage Heat 2nd Stage Aux. Heat 1st Stage Y1/W1 Cool 2nd Stage – – – – – – – – Cool C/O Valve –...
  • Page 108 WESTINGHOUSE TYPICAL HE SERIES Electronic Replacement or Upgrade Chronotherm ® Chronotherm Electromechanical Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – Heat Aux. Heat Aux. C/O Valve Heat C/O Valve – Cool System Monitor/ – – – System Defrost Em.
  • Page 109 LED is energized when terminal is powered. Terminal must be connected to the transformer common. L terminal is powered continuously when thermostat is in Em. Ht. position. M13242 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T872G1356/Q672L1219 T874D,G/Q674L1223 70-6627 • 107...
  • Page 110 WHITE RODGERS TYPICAL 1F92-1, 1F92-6, 1F92-7, 1F58-910 THERMOSTAT, S28 SUBBASES Electronic Replacement or Upgrade ® Chronotherm Electromechanical Chronotherm IV Existing Function Terminals Common Power Compressor Y1/W1 1st Stage – – – – Heat Aux. Heat 3rd Stage Aux. Aux. Heat 2nd Stage Cool C/O Valve...
  • Page 111 X2 terminals. L terminal is powered continuously when thermostat is in Em. Ht. position. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) M13213 terminal. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874C1570/Q674B1000 T874L1455/Q674L1322 T874R1236/Q674L1348 T874R1392/Q674L1447...
  • Page 112 Configure O/B (select models) in Installer Setup. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) When W2 is not used, configure W2 cycle rate to NC. terminal. M13214 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER T874N1008/Q674F1196 70-6627 • 110...
  • Page 113 Configure W2 cycle rate to NC. Terminal must be connected to the transformer common. M13215 Configure O/B (select models) in Installer Setup. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1274 (2TH11703324) T874G1428/Q674J1027 (6TH11702424) T872G1299/Q672L1177 T874R1046/Q674L1017 (2TH11702224)
  • Page 114 Tape off. Thermostat replaces outdoor reset models with improved zero droop performance. Configure W2 cycle rate to NC. M13216 Terminal must be connected to the transformer common. TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T872G1042/Q672J1021 T874R1145/Q674L1272 T874R1169/Q674L1330 T874R1251/Q674L1272 (2TH11702324) T874R1327/Q674L1272 (6TH11702224) 70-6627 •...
  • Page 115 If replacing a thermostat used on a W8045, see Field-installed E to W2 jumper for improved performance in emergency heat. York/Borg Warner Direct Replacements. M13224 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1274 (2TH11703324) T8141A1006 T874G1345 (2TH11702624)1...
  • Page 116 Terminal must be connected to the transformer common. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position. M13219 TYPICAL THERMOSTATS AND SUBBASES — HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874G1410/Q674F1311(6TH11703024) 70-6627 • 114...
  • Page 117 YORK/BORG WARNER TYPICAL EBHP SERIES Electronic Replacement or Upgrade ® Chronotherm Chronotherm Electromechanical Existing Function Terminals Common Power 1st Stage – Heat Aux. Heat Aux. 1st Stage Y1/W1 Cool C/O Valve – Heat C/O Valve – Cool System Monitor/ – –...
  • Page 118 L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal must be connected to the transformer common. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) M13221 terminal. TYPICAL THERMOSTATS AND SUBBASES—HONEYWELL MODEL NUMBER T874R1129/Q674L1181 T874N1024/Q674F1261 70-6627 • 116...

  • Page 119: Index

    Friedrich .................................. General Electric ..............................57-58 Geo System ................................Heat Controller ................................ Heatwave ................................Heil Quaker ................................68-69 Hookup Diagrams ..............................15-25 Honeywell ................................62-67 InterCity Products ..............................68-69 Intertherm ................................70-72 Janitrol ..................................Keeprite ................................... Lennox ..................................75-81 Luxaire ..................................
  • Page 120 Tips for Using This Heat Pump Cross Reference ....................Trane ..................................97-100 Weatherking ................................101-102 Wesco ..................................Westinghouse ................................. 104-107 Whirlpool ................................. 68-69 White Rodgers ................................ Williamson ................................109-110 York ..................................111-115 ZoneAire ................................. Wiring Connections for Honeywell Heat Pump Thermostats .................. 34-35 70-6627 • 118...

  • Page 121: Index To Figure Diagrams

    HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE Index to Figure Diagrams Figure Number Page Number Fig. 1 Using the T8611M on two-speed heat pump compressor equipment........Fig. 2 Installing an R8222B Switching Relay on heat pumps requiring heating mode changeover. Fig.
  • Page 122 70-6627 • 120...
  • Page 124 Honeywell Limied — Honeywell Limitée Honeywell Plaza 155 Gordon Baker Road P.O. 524 North York, Ontario Minneapolis, MN 55408-0524 M2H 3N7 Printed in U.S.A. on recycled paper containing at least 10% 70-6627 Rev. 12-98 ©Honeywell Inc. 1998 All rights reserved www.honeywell.com post-consumer paper fibers.

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