Honeywell

T8600,T8601,T8602,T8611,T8624 Thermostats
FURNACE AIR FILTER, HUMIDIFIER PADAND ULTRAVIOLET(UV) LAMP TIMERS
The thermostat has up to three timers to help the homeowner remember when to change or clean the furnace air filter, whole-house humidifier pad or ultraviolet air treatment system UV lamp. See Table 1.

1. Thermostat

timers. Type of Thermostat Pusbbutton (Heat, timers UV lamp Humidifier Furnace timer pad timer air filter timer System Off, Cool) Keys

Manual

System Off,

Switches Cool)

Timer Measurement Calendar days in any mode. Calendar days in Heat mode only. System run time in any mode.

Furnace Humidifier

(Heat, air filter

and UV lamp

pad timer --
View or ResetTimer Settings
When the thermostat activates a timer, the thermostat flashes Filter until the timer resets. 1. Reset the timer by pressing the i key until the expired timer is displayed. 3. Press the Run Program key. You can view the number of days remaining at any time by pressing the i key three or four times. If more than one timer is active, ell active timers show sequentially when pressing the i key several times. NOTE:

Filter

u P! Days
For complete instructions on replacing or cleaning your furnace filter, humidifer pad or UV lamp, see the product owner's manuals. Contact your local contractor or visit www.bonewveli.com/vourhome. For instructions on entering installer Setup mode, see product installation instructions (installers only). Table 2 gives installer Setup instructions for the timers.
Press the Time Akey to reset the timer.

Filter Days

!_-M2(1244

US. Registered

Trademark _ *All Rights Reserved (_9- [ 5 _4[
Copyright @ 2002 Honeywell
T8600, T860f, 7-8602, T861f, T8624 THERMOSTATS
Table 2. Timer Installer Setup. Factory Setting Selection Furnace air filter timer (pushbutton System keys) Installer Setup Number Display Description 30 days (System run time) Display 0, 1, 3, 4 Other Choices Description 0 - off 1- 10 days 3 - 60 days 4- 120 days (Time is counted when heat, cool or fan is running) 0 - off 1- 30 days 3 - 180 days 4 - 365 days (Time is counted by calendar days in any mode.) 1- 90 days 2 - 180 days 3 - 365 days (Time is counted by calendar days in heat mode.) 1 - 365 days (Time is counted by calendar days in any mode.)
Furnace air filter timer (manual System switches)

90 days (calendar days)

O, 1, 3, 4

Humidifier pad monitor

1, 2, 3
Ultraviolet air treatment (UV) system lamp monitor
Automatioll Ho*l_>_ ell 1985 Doughs Golde_ Valley, Drive No:li MZ< 55422 and Colltrol Solutions Honey_ ell Limited-HoneyweIl D_iw Oiit_io Limit&
35 Dynamic Scarbomugh, M IV 4Z9

69-1584-1

Rev. 9-02
w_w<honeywellcom/yourhome

Heat Pumps with Heating Mode Changeover
Here 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 the COOL position, the O terminal is energized, reversing the logic of the Chronotherm III T8611G and T8611M Y terminal. Now when the thermostat calls for cooling, the Y terminal activates the first stage of cooling.

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Equipment Function Power 1st Stage Cool 2nd Stage Cool Fan 1st Stage Heat 2nd Stage Heat Transformer Common
Equipment Terminals R Y1 Y2 G W1 W2 C

T8611M Terminals R

W2 C Y

O Heating Changeover B

R8222B Relay

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 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 the HEAT position, the B terminal is energized, reversing the logic of the Chronotherm III T8611G and T8611M Y terminal. Now when the thermostat calls for heating, the Y terminal activates the first stage of heating. Equipment Terminals R Y1 Y2 G W1 W2 C W2 C Y Y2 G T8611M Terminals R

B Cooling Changeover O

M13230
Fig. 3. Installing an R8222B Switching Relay on heat pumps requiring cooling mode changeover.

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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. To change the fan operation on the TRADELINE and SUPER TRADELINE models, follow the wiring diagram shown below. Connecting the thermostat and relay to the equipment in this manner disables the fan switch in the emergency heat mode. During normal operation, the fan switch is enabled and the fan operation is as described in the installation instructions. R (Power) E C (Common) E (EM. Heat) G Thermostat R8222B Relay G (Fan) Equipment

1st Stage Heating 1st Stage Cooling Changeover Valve 2nd Stage Heating Emergency Heat 2nd Stage Cooling

W1 Y1 B W2 E Y2

Aux. E Y2

M13233

Fig. 12. Relay wiring connections for PC8900 in heat pump applications requiring separate Y1 and W1 terminals with a heating changeover.
1st Stage Cooling 1st Stage Heating Changeover Valve 2nd Stage Heating Emergency Heat 2nd Stage Cooling

Y1 W1 O W2 E Y2

M13234
Fig. 13. Relay wiring connections for PC8900 in heat pump applications requiring separate Y1 and W1 terminals with a cooling changeover.

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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 changeoverrefers to the presence of an AUTO position in the system switching (EX: Q674F with OFF-COOL AUTO-HEAT-EM. HEAT switching). The thermostat automatically changes between heat and cool modes as indoor temperature changes. Manual changeoverrequires a system switch movement to change mode (EX: Q674L with EM. HT.-HEAT-OFFCOOL switching). Cool changeover valveoperates on cooling. The reversing valve or relay is activated either by moving the system switch to COOL (manual changeover) or by a mercury switch that makes on a temperature rise (auto changeover). Heat changeover valveoperates on heating. The reversing valve or relay is activated either by moving the system switch to HEAT (manual changeover) or by a mercury switch that makes on a temperature fall (auto changeover). System monitor relayoptional equipment on some heat pumps. This system monitor relay detects a malfunction in the compressor and indicates the malfunction by activating the EMERGENCY HEAT LED on the switching subbase. The system monitor relay may be wired to the L terminal on some thermostats Each mercury switch is identified by function: H1Stage 1 Heating. H2Stage 2 Heating. H3Stage 3 Heating. C1Stage 1 Cooling. C2Stage 2 Cooling. C3Stage 3 Cooling. C/OChangeover (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 drawn in the open position with an arrow indicating operation with a temperature RISE or FALL.

KEY TO HOOKUP SYMBOLS

TRANSFORMER (24 VAC SECONDARY)
RELAY/CONTACTOR CONTACTS B TERMINAL
RELAY OR CONTACTOR COIL LED ODT OUTDOOR THERMOSTAT EHR EMERGENCY HEAT RELAY FIXED ANTICIPATOR HIGH RESISTANCE (TYPICALLY 5 KILOHMS) RTD TIME DELAY RELAY RD DEFROST RELAY ADJUSTABLE ANTICIPATOR LOW RESISTANCE (TYPICALLY 0 TO 5 OHMS) CHP PRESSURE SWITCH LACO LOW AMBIENT CUTOFF

MERCURY SWITCH

Fig. 14. Key to hookup symbols.

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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 Manufacturers Association (NEMA). Why is this so important? Because todays sophisticated control systems require reliable, accurate voltage output for optimal system performance. Its especially important for electrical controls (OEM boards in high efficiency furnaces, for example) or resistive heaters, such as thermostat heat anticipators. For better performance, some heat pumps require a NEMA standard transformer. Conformance to NEMA standards assures the voltage output of a transformer will remain within acceptable limits, regardless of load conditions. No excessively high open-circuit voltage under light load conditions. No low, brown-out voltage levels under heavy load conditions. 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 NEMA standard can be marked in this way. The following are recommended Honeywell NEMA standard transformers: AT72D1691, AT72D1683, AT87A1106

SECONDARY VOLTAGE

100 % OF LOAD 150
Fig. 15. NEMA Class 2 transformer band.

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Typical System Hookup Diagrams

L1 L2 (HOT)

1 RTD 1 ODT 1
H1 C1 FALL H1/C1 ANTICIPATOR

FAN SWITCH AUTO ON

EHR 2 G
FAN RELAY R W2 H2 ANTICIPATOR AUX. HT. LED (GREEN) E H2 L FALL 2 EM. HT. HEAT OFF COOL SYSTEM SWITCH X LACO CHP EM. HT. LED (RED) B HEAT CHANGEOVER VALVE SYSTEM MONITOR RD EM. HT. RELAY RTD 1
COMPRESSOR CONTACTOR COOL CHANGEOVER VALVE

M6060A

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. NO AUTO FAN IN EMERGENCY HEAT.
Fig. 16. Internal schematic and typical wiring diagram for T841A1308.

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HEAT PUMP TH ERMOSTAT CROSS REFERENCE/SELECTION GUIDE
G 9 H1 C1 FALL C ANTICIPATOR 2 FAN SWITCH 3 H1/C ANTICIPATOR 5 AUTO ON F COMPRESSOR MONITOR R 11 SYSTEM SWITCH EM. HT. HEAT RESET POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. FIELD REMOVABLE JUMPER. AUTO FAN IN EMERGENCY HEAT. Y

HONEYWELL REPLACEMENT

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.

MANUFACTURER

MODEL NUMBER
HONEYWELL REPLACEMENT a T841A1316, Y594G1419, T8411, T8511, T8011, T8611 T841A1316, Y594G1419, T8411, T8511, T8011, T8611,
Climate Technology Corporation CTC400 CTC403
a Use T8611M or W8900B for 3 heat, 2 cool applications.

MANUFACTURER Enerstat b

MODEL NUMBER DSP400 DSP410 DSP600 T841A1001 a T841A1001 a
T874W1031/Q674L1546, Y594W1014
a Provision for optional remote sensor, not provided. b See page 49 for hookup details.

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MANUFACTURER General Electrica
MODEL NUMBER 3AAT86B21A1 3AAT86B14A1 3AAT86B16D1 3AAT80A1A1 3AAT80A2A1 3AAT80B1A1 3AAT86B1A1
HONEYWELL REPLACEMENT Y594G1161, T8411, T8511, T8011, T8611 T841A1316, Y594R1425, T8411, T8511, T8011, T8611 T841A1316, Y594R1425, T8411, T8511, T8011, T8611 T841A1712, Y594R1425, T8411, T8511, T8011, T8611 T841A1712, Y594R1425, T8411, T8511, T8011, T8611 Y594G1161, T8411, T8511, T8011, T8611 Y594G1161, T8411, T8511, T8011, T8611
a See pages 57-58 for hookup details.

MANUFACTURER Lennox a

MODEL NUMBER 51H3901 (3AAB83C38) 51H4001 (3AAT88D38B2) 51H4301 (3AAT88D38C2) 21J7101 (3AAT89B38D1) 21J7201 (3AAT89B38E1) 21J7301 (3AAT89B38F1)
HONEYWELL REPLACEMENT T841A1316, Y594R1425, T8411, T8511, T8011, T8611G T841A1712, Y594G1419, T8411, T8511, T8011, T8611G T8611M, PC8900A1007/W8900B1002 T841A1555, Y594R1763, Y594G1161, T8411, T8511, T8011, T8611G T841A1712, Y594R1425, T8411, T8511, T8011, T8611G T841A1712, Y594G1419, T8411, T8511, T8011, T8611G
a See pages 75-81 for hookup details.

MANUFACTURER Maple Chase

MODEL NUMBER 09720
HONEYWELL REPLACEMENT T841A1316, Y594R1425, Y594G1419, T8411, T8511, T8011, T8611G T8611M, PC8900A1007/W8900B1002 T8611M, PC8900A1007/W8900B1002

Existing Terminals C R Y W1 W1 or W2
Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. If provided on original equipment. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. Terminal X (C) must be connected to transformer common. Do not remove factory-installed jumper.
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)
Optional CHECK LED on T8611G1004. See Fig. 26. Field-installed X2 to X jumper (provided). LED is energized when terminal is powered. Available on T8611R1000 only. L terminal is powered continuously when thermostat is in Em. Ht. position.

M13147

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER)
T874G1121 (HH07AT161) T874G1717/Q674J1167 T874H1070/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) T8141A1147 T8611G1046 (HH07AE001) T8611R1208 (HH07AX114) T8611R1216 (HH07AX115)

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TYPICAL 38BQ
Electromechanical Chronotherm III

T8 Q6 74D F1 5/ 08 1M 70

T T61 M2 1M 02 W PC0/ B2 1M 10 T8 51
Common Power 1st Stage Cool 1st Stage Heat 2nd Stage Heat Fan C/O Valve Cool C/O Valve Heat Em. Heat Common 1st Stage Compressor System Monitor/ System Defrost LED Indication 2nd Stage Cool

C R Y1 W1 W2 G

X1 R Y1 W1 W2 G O

Existing Terminals

W2 G O

Y2 G O/B

W2 G O/B

Existing Terminals X R Y W1 W2 G B

C R Y W1 W2 G

NOT AVAILABLE
Terminal X (C) must be connected to transformer common. Remove factory-installed Y1 (Y) to W1 jumper. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. When W2 is not used, configure W2 cycle rate to NC.
If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. Install R8222D1014 (see page 12) for separate Y1 and W1 terminals. Configure O/B (select models) in Installer Setup. 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

ENERSTAT
T T41 R1 1R TT8 11R T8 1G 10 1M 08

T T61 M2 1M 7 25

T T51 G1 1G 1 47

T T01 R1 1R 6 14

Common Power 1st Stage Compressor 1st Stage Heat 2nd Stage Aux. Heat 3rd Stage Aux. Heat Fan 2nd Stage Comp. C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost EM. Heat Multiple Aux. Heat Loads Remote Sensor LED Indication
Existing Terminals X R HP1 or

X R HP Y

C R Y1 or Y

X1 X2

Configure O/B (select models) in Installer Setup. Both first stage heat and cool are connected to HP terminal. If provided on original equipment. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. Terminal X (C) must be connected to transformer common.
Optional CHECK LED on T8611G,M. See Fig. 26 and 27. Do not remove factory-installed jumper. Field-installed X2 to X jumper (provided). When W2 is not used, configure W2 cycle rate to NC. T8611M7008 Model.

70-6627 49

C R Y/W1

M13173

EVCON/COLEMAN

MODELS: 3200, 3300

R 100 0
Electronic Replacement or Upgrade
T T41 R1 1R T T01 R1 1R 6 4

Common Power

(2) (1)

BLCK RED W Y

C R W1
1st Stg. Heat Compressor Aux. Heat Fan C/O Valve Cool C/O Valve Heat System Monitor/ System Defrost EM. Heat LED Indication

(5) (6)

Y1 W2 G O

(4) W2 G B

(10) A (3) X
R8222B1067 relays required to operate system. Equipment requires normally energized emergency heat. See page 10 for wiring diagram. Terminal must be connected to the transformer common.
Remove factory-installed jumper on Model 3200. Do not remove factoryinstalled jumper on Model 3300.

M13203

70-6627 50
MODELS: 3200, 3300, 3360, 3400, 6000, 6500
T T51 G1 1G T8 T01 R1 1R T T61 G2 1G W PC0/ B2

Common Power Compressor

Existing Terminals BLCK (2) RED (1) Y (6)

C R Y1 W1 or Y

1st Stage Heat Aux. Heat Fan C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost Em. Heat Multiple Aux. Heat Loads LED Indication 2nd Stage Compressor 2nd Stage Cool

W2 G B B

W2 G or

W2 G B or

Aux. G
See Coleman wholesaler to obtain replacements for these thermostats. If not possible, basic functions can be provided as shown. Configure O/B (select models) in Installer Setup. Optional LED indication activated with completed circuit on X1 and X2 terminals. R8222B1067 relays required to operate system. Equipment requires normally energized emergency heat. See page 10 for wiring diagram.
Terminal must be connected to the transformer common. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. Do not remove factory-installed jumper. Field-installed X2 to X (C) jumper. When W2 is not used, configure W2 cycle rate to NC.

M13204

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T8300A1029/Q6300A1029 (3300-382/3300-383)

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TYPICAL 3700, 3900, 4400, 6500, 7100, 9200 (3600 SERIES THERMOSTAT) DIRECT REPLACEMENTS
Common Power Compressor 1st Stage Heat Auxiliary Heat Fan C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost Em. Heat 2nd Stage Compressor

Existing Terminals X R Y

X R Y Y1
Terminal X (C) must be connected to transformer common. When W2 is not used, configure W2 cycle rate to NC. Do not remove factory-installed jumper. To eliminate automatic fan in emergency heat mode, connect switching relay as shown on page 9.

M13157

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874G1501 (3600-375)/Q674F1378 T874G1576 (3600-373)/Q674F1402 T874R1368 (3600-368)/Q674L1421

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TYPICAL 3700, 3900, 4400, 6500, 7100, 9200 (3600 SERIES THERMOSTAT) ALTERNATIVE REPLACEMENTS
Common Power Compressor 1st Stage Heat Aux. Heat Fan Defrost C/O Valve Cool System Monitor/ System Defrost EM. Heat Multiple Aux. Heat Loads LED Indication EM. Heat 2nd Stage Compressor

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UNIVERSAL THERMOSTATS
Existing Control Terminal Designation

0A 0A 1R 1R 1G 11 04

T T01 R1 1R T T61 G2 1G W PC0/ B2
Common Power Compressor 1st Stage Heat Auxiliary Heat Fan C/O Valve Heat C/O Valve Cool System Monitor/ Sytem Defrost Em. Heat Multiple Heat Loads LED Indication Defrost 2nd Stage Compressor 2nd Stage Cool

B R Y1

C R Y

C R Y1 W1

G or O/B
Remove factory-installed jumper for independent first stage heat and cool operation. Terminal must be connected to the transformer common. Configure O/B (select models) in Installer Setup. Optional LED indication activated with completed circuit on X1 and X2 terminals.
If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. 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. 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 T8300A1011/Q6300A1002 T8300A1045/Q6300A1002 T8300A1029/Q6300A1036 T8300A1037/Q6300A1044 T8300B1001/Q6300B1000 T8611R1000 T8611G1004

70-6627 67

INTERCITY PRODUCTS/HEIL QUAKER/WHIRLPOOL/TEMPSTAR
Common Power Compressor 1st Stage Heat Auxiliary Heat Fan C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost Em. Heat Multiple Aux. Heat Loads LED Indication Defrost 2nd Stage Compressor
Existing Terminals X R Y W1
Terminal X (C) must be connected to transformer common. Remove factory-installed Y1 (Y) to W1 jumper. Terminal is for multiple auxiliary heat loads such as contactors, sequencers or relays. Configure O/B (select models) in Installer Setup. If multiple auxiliary heat loads are used, connect to W2 (W8900B) terminal.
If separate Y1 and W1 terminals are required, install R8222D1014. See page 12. 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.

M13159

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T8611R1190 (HQ1149375HW) T874R1947/Q674L1819 (HQ1149406HW/HQ1149407HW)

70-6627 68

LED Indication Defrost 2nd Stage Compressor 2nd Stage Cool
Configure O/B (select models) in Installer Setup. Both first stage heat and cool are connected to Y terminal. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. L terminal is powered continuously when thermostat is in Em. Ht. position. Terminal X (C) must be connected to transformer common.

Do not remove factory-installed jumper. Optional LED indication activated with completed circuit on X1 and X2 terminals. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered.

M13185

T841A1134 (HQ1147021HW) T841A1175 (HQ1147004HW) T841A1589 (HQ1149480HW) T872R1172/Q672L1193 T874G1246/Q674F1212 T874R1137/Q674L1132 (HQ711597HW/711598) T874R1673/Q674L1132 (HAXB004TW01/711598) T874R1749/Q674F1329 (TAXB004TW01/712005) T874R1749/Q674L1132 (TAXB004TW01/711598) T874R1731/Q674L1132 (HQ1147909HW/711598) T8141A1022 T8141A1030 T8141A1048 T8141A1055 T8141A1139 T8300A1136/Q6300A1119 (HQ713669HW) T8611G1020 (HQ713669HW)

70-6627 69

INTERTHERM/MILLER/NORDYNE
T T41 R1 1R T8 T8 611R 1G 04
Common Power Compressor 1st Stage Heat Aux. Heat Fan C/O Valve Heat C/O Valve Cool System Monitor Em. Heat LED Indication 2nd Stage Compressor 2nd Stage Cool

X R Y Y1 W1

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. LED is energized when terminal is powered. Terminal X (C) must be connected to transformer common. Do not remove factory-installed jumper.
Optional LED indication activated with completed circuit on X1 and X2 terminals. L terminal is powered continuously when thermostat is in Em. Ht. position. To eliminate auto fan in emergency heat mode, add switching relay as shown on page 9.

M13191

70-6627 70
Existing Terminals or X C R Y

W3 X2 or X1

Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. Terminal X (C) must be connected to transformer common. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. Do not remove factory-installed jumper. Optional CHECK LED on T8611G1004. See Fig. 26.
Field-installed X2 to X jumper provided. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. Optional LED indication activated with completed circuit on X1 and X2 terminals. L terminal is powered continuously when thermostat is in Em. Ht. position. LED is energized when terminal is powered.

M13192

70-6627 71

Aux. G O/B

Common Power Compressor 1st Stage Heat Auxiliary Heat Fan Outdoor Thermistor Em. Heat C/O Valve Cool System Monitor/ System Defrost

E O or

For best performance, use a NEMA rated transformer. Terminal B (C, X) must be connected to transformer common. Configure O/B (select models) in Installer Setup. Leave factory-installed jumper W1-Y1 (Y) in place. Tape off. Electronic thermostat replaces outdoor reset with improved zero droop performance.

Terminal X (X2 or C) must be connected to transformer common. Do not remove factory-installed jumper. If separate transformers are used, replace with one 75 VA transformer as shown on page 78. When W2 is not used, configure W2 cycle rate to NC. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. LED is energized when terminal is powered. L terminal is powered continuously in Emergency Heat Position.

M13165

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T874C1448/Q674L1355(24F5101/31F3201) T874C1448/Q674L1165(24F5101/24F5901) T874G1014/Q674F1113(24F5801/24F6201) T874G1154/Q674F1105 T874R1178/Q674L1355(24F5601/31F3201) T874R1178/Q674L1165(24F5601/24F5901) T8141A1089 T8611G1053 (27H3001)

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LUXAIRE (MONCRIEF/FRASER JOHNSTON)
Common Power Compressor 1st Stage Heat Auxiliary Heat Fan C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost EM. Heat Multiple Aux. Heat Loads LED Indication 2nd Stage Compressor
Existing Terminals or B X R Y or
Configure O/B (select models) in Installer Setup. Both first stage heat and cool are connected to Y terminal. Terminal is for multiple second stage loads such as contactors, sequencers, or relays. Terminal X (C or B) must be connected to transformer common. Do not remove factory-installed jumper. Field-installed X2 to X jumper (provided).
If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. Optional CHECK LED. Connect X1 to switching device; jumper X2 to C. Optional LED indication activated with completed circuit on X1 and X2 terminals. When W2 is not used, configure W2 cycle rate to NC.

M13166

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MAGIC CHEF

PB SERIES EQUIPMENT
E T8 Q6 74C B / Y Y5 594G GAV NO AI T LA BL
T T51 G1 1G T T61 G2 1G 2 28
Common Power 1st Stage Cool 1st Stage Heat 2nd Stage Heat Fan C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost EM. Heat 2nd Stage Cool Power Heat
Existing Terminals C R Y1

X Rc Y1

IMPORTANT: No provision for emergency heat, system monitor (compressor fault), or auxiliary heat LEDs. Terminal C (X) must be connected to transformer common. Remove Y1 (Y) to W1 (W) jumper.

M13171

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TA2060

Common Power Compressor 1st Stage Heat Aux. Heat Fan C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost Outdoor Thermistor/ Sensor Em. Heat LED Indication 2nd Stage Compressor 2nd Stage Cool

X2 X1

Terminal must be connected to the transformer common. Tape off. Thermostat replaces outdoor reset with improved zero droop performance. Do not remove factory-installed jumper. Optional LED indication with completed circuit on X1 and X2 terminals.
Configure O/B (select models) in Installer Setup. Replace existing thermistor with Honeywell C815A1005. 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.

M13199

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SUN MANUFACTURING

W1 G B
Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. Terminal must be connected to the transformer common. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. Do not remove factory-installed jumper.
Optional LED indication with completed circuit on X1 and X2 terminals. Field-installed X2 to X (C) jumper. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal. LED is energized when terminal is powered. L terminal is powered continuously when thermostat is in Em. Ht. position.

M13200

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1399 (HPL1404)

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SQUARE D/SUN DIAL
T T41 R1 1R T8 T8 611R 1G / 04
Existing Terminals or C X R Y
Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. Terminal must be connected to the transformer common.
If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) 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. M13201

M13228

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1407 (ASYSTAT652) T874R1053/Q674L1140 T8611G1038 (THT-0603) T841A1530 (ASYSTAT652A) T874R1426/Q674L1496 (BAYSTAT339/WY28X0112) T8611G111 (TAYSTAT501) T872G1059/Q672J1039 T874R1657/Q674L1611 (ASYSTAT651/WY28X235) T8611R1091 T872R1057/Q672L1037 T874R1939 (ASYSTAT-651A)/Q674L1801 (THT1225) T8611R1109 (THT-0602) T874G1204/Q674J1043 T8141A1014 T8611R1117 (ASYSTAT700) T874G1675/Q674J1142 T8141A1071 (ASYSTAT650/WY28X0250) T8300A1128/Q6300A1101 (BAY28X194/BAY28X195)

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WEATHERKING

79 GR1

E X2 X1
Terminal must be connected to the transformer common. Configure O/B (select models) in Installer Setup. Do not remove factory-installed jumper. To eliminate automatic fan in emergency heat mode, connect switching relay as shown on page 9.

M13205

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER (CUSTOMER PART NUMBER) T841A1456 (41-20796-65) T874R1830/Q674L1504 (41-20769-64)

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TYPICAL WPH SERIES
Existing Terminals or or X C1 C R Y or W1
Configure O/B (select models) in Installer Setup. When W2 is not used, configure W2 cycle rate to NC. Terminal is for multiple auxiliary heat loads such as contactors, sequencers, or relays. 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.
Do not remove factory-installed jumper. Optional Check LED on T8611G1004. See Fig. 26. Field-installed X2 to X (C) jumper. If multiple auxiliary heat loads are used, connect to W2 (Aux W8900B) terminal.

M13209

TYPICAL THERMOSTATS AND SUBBASES HONEYWELL MODEL NUMBER OR CUSTOMER PART NUMBER T841A1373 T8141A1105 GE 3AAT80

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WESCO/ADDISON
Models: 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.
Existing Terminals or C1 C R W1 or Y
Auxiliary W1 Heat Fan C/O Valve Heat C/O Valve Cool System Monitor/ System Defrost EM. Heat Multiple Aux. Heat Loads LED Indication 2nd Stage Compressor 2nd Stage Cool Y1