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Honeywell TRADELINE Q674, Product Data, Page: 169 / 224

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Honeywell TRADELINE Q674 Product Data Download Page 169

T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES

169

60-2485—8

 

Fig. 161. Schematic and hookup of T874G with Q674J. Used in heat pump applications.

H2 ANTICIPATOR

1

SUPL. HT.
LED (RED)

M5724

POWER SUPPLY. PROVIDE DISCONNECT MEANS 
AND OVERLOAD PROTECTION AS REQUIRED.

1

SYSTEM COMPONENTS

SUBBASE

THERMOSTAT

L1 
(HOT)

L2

1

H1

FALL

H2

FALL

2

4

6

O

G

R

W 2

E

L

C

Y

CO

RISE

C1

RISE

8

9

10

H1 ANTICIPATOR

C1 ANTICIPATOR

SYSTEM
SWITCH

SUPL. HT.

ON

OFF

FAN
SWITCH

AUTO

ON

FAN RELAY

COOL CHANGEOVER VALVE

OUTDOOR
THERMOSTAT

EM. HT. RELAY 1

EM. HT. RELAY
CONTACT 1

EM. HT. RELAY 2

EM. HT.  RELAY
CONTACT 2

EM.HT.  
RELAY 3

2

COMPRESSOR
CONTACTOR 1

N.O. SWITCH — INSTALLER ADDED, TO LIGHT EM. HT. LED
WHEN COMPRESSOR OPERATION IS NOT NORMAL.

2

Summary of Contents for TRADELINE Q674

Page 1: ...tage Thermostats Versaguard Thermostat Guard or custom key lock thermostat guards available for T874 Multistage Thermostats T874 Thermostat requires a Q674 Subbase Q674 Subbase provides system and fan switching wiring terminals and mounting base for T874 Multistage Thermostat Adapter plate available for mounting Q674 on wall or horizontal outlet box Light emitting diodes LEDs located on subbase fo...

Page 2: ...D Thermostat Provides two stages of heating and two stages of cooling Use with Q674A F Subbases Y594D T874D Q674E TG504A Thermostat Subbase key lock cover package Provides two stages of heating and two stages of cooling Includes a key lock cover for setpoint protection Y594G T874G Q674F Thermostat Subbase package for heat pump Provides two stages of heating and one stage of cooling Automatic chang...

Page 3: ...sius scale 3 to 22 C 38 to 72 F and 26 to 32 C 78 to 90 F cooling with stop Nonadjustable factory added stop limits heating setpoint to 72 F 22 C maximum and cooling setpoint to 78 F 26 C minimum OEM customer personalization Locking cover and locking lever see Thermostat Accesso ries Thermostat cover without thermometer Adjustable locking temperature stops Voltage heat anticipation for first or se...

Page 4: ...1 2 0 1 1 2A 0 1 2A 0 1 0A T874C Standard and TRADELINE 72 F 78 F 22 C 26 C set stops with locking cover no thermometer for DoDa 12 F 7 C differential between H1 and H2 stages T874C1125 T872C Standard 2 1 0 1 1 2A 0 1 1 2A 0 1 5A Fast cycling 0 12 0 6A 0 12 0 6A T874D Standard and SUPER TRADELINE Adjustable locking temperature stops SUPER TRADELINE T872D Standard 2 2 0 1 1 2A 0 1 1 2A 0 1 2A 0 1 0...

Page 5: ...0 1 1 2A 0 1 5A T874Q Night setback heating T872Q Standard 1e 0 1 1 2A T874R Heat pump T872R Heat Pumpf 2 1 0 1 5Ac 0 1 1 2A 0 1 5A T874S Two speed compressor heat pump None Heat Pump 2 2 1g 0 1 2Ac 0 1 2Ac 0 1 2A 0 1 0A T874V Standard None Standard 1 0 1 5A T874W Heat pump and standard Night setback heating T872W Heat Pump or Standard 3 2 0 1 2Ab 0 1 2Ac d 0 1 2A 0 1 0A a Department of Defense b ...

Page 6: ...F HEAT AUTO COOL AUTO ON T874A D Q674F Two LED models EM HT light Q672F Heat Pump OFF EM HT HEAT AUTO COOL AUTO ON T874C D G N S Provision for AUTO fan operation in EM HT OFF COOL AUTO HEAT EM HT AUTO ON Q674G O and B terminals Q672G Standard OFF AUTO None T874A F Q674J Provision for AUTO fan operation Q672J Heat Pump EM HT AUTO OFF AUTO ON T874A D G J in EM HT EM HT ON OFF AUTO ON Provision for o...

Page 7: ... Location Install the thermostat about 5 ft 1 5m above the floor in an area with good air circulation at average temperature Do not mount the thermostat where it can be affected by drafts or dead spots behind doors in corners or under cabinets hot or cold air from ducts radiant heat from the sun fireplace or appliances concealed pipes and chimneys unheated uncooled areas such as an outside wall be...

Page 8: ...isted in Table 5 The terminal barrier permits straight or wraparound wiring connection See Fig 7 The subbase can require one or more jumpers that may or may not be factory supplied See Fig 8 and the wiring diagrams for specific terminals to be jumpered Fig 7 Barrier configuration CAUTION Equipment Damage Hazard Never install more than one wire per terminal unless using factory supplied jumper with...

Page 9: ...r W1 H1 R3 Stage 1 heating control W2 H2 Y R4 Stage 2 heating control W3 Stage 3 heating controlb Y1 C1 M Stage 1 cooling control Y2 C2 Stage 2 cooling control Y3 Stage 3 cooling control X X1 X2 C Clogged filter switch or common connection T A Outdoor thermistor L C H HSII control panel P Defrost O Momentary circuit changeover A A1 A2 Z C L LEDs a Other terminal designations can be used that are n...

Page 10: ...T874 Thermostat 5 Place the two stop brackets in position with the tabs in the slot between the HEAT and COOL levers See Fig 9 Fig 9 Range limiting and lever locking methods 6 Insert the mounting screw into the two slots in the stop brackets and attach to the brass insert Tighten the screw to pull the brass insert into the back of the ther mostat 7 Loosen the mounting screw enough to free the stop...

Page 11: ...ee Fig 10 7 Note the two tabs along the top inside edge of the ther mostat base The tabs fit into corresponding slots on top of the subbase Mount the thermostat on the subbase 8 Align the two captive mounting screws in the thermostat base with the posts on the subbase Tighten both screws Do not overtighten screws or damage to sub base posts can result Fig 10 Installation of locking cover assembly ...

Page 12: ...N SWITCH positions control fan operation as follows ON or CONT fan operates continuously AUTO fan operates as controlled by the thermostat in heat pump systems or conventional cooling mode fan operates as controlled by the plenum switch in conven tional heating mode LO fan operates constantly at low speed MED fan operates constantly at medium speed HI fan operates constantly at high speed To move ...

Page 13: ...move the lever to the left just until the first stage bulb makes mercury rolls to the left side of the bulb Note the setting on the temperature scale Slowly move the lever to the left until the second stage bulb makes Note the setting on the temperature scale The difference between the two temperatures is the interstage differential which should match the number set on the scale with the tension s...

Page 14: ...mostat has been accurately calibrated at the factory The thermometer should only need adjustment if it has been dropped or shifted due to mishandling If the setpoint lever and the thermometer reading do not agree use the following procedure 1 Remove the thermostat cover by pulling up from the bottom edge of the cover away from the base until it snaps free of the cover clip 2 Set the thermostat cov...

Page 15: ... of the hookup symbols and Fig 17 through 25 for typical hookups 2 Completely trace only one circuit at a time for example heat or cool 3 Connections are indicated by small dots at the point of intersection If there is no dot there is no connection 4 The left portion of the circuit the thermostat contains the mercury switches The heat switches make on a temperature fall and the cool switches make ...

Page 16: ... HOT L1 L2 1 LACO CHP Y B E O G L X W2 W3 R ODT 1 RTD 1 EHR 1 RTD 2 ODT 2 EHR 2 RTD 3 RD SYSTEM MONITOR FAN RELAY COMPRESSOR CONTACTOR COOL CHANGEOVER VALVE EM HT RELAY RTD 1 AUX HT LED GREEN EM HT LED RED FAN SWITCH ON AUTO SYSTEM SWITCH EM HT HEAT OFF COOL H2 FALL H1 FALL C1 2 3 4 5 6 H1 C1 ANTICIPATOR H2 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED AUX...

Page 17: ...OL H2 FALL H1 FALL C1 2 3 4 5 6 H1 C1 ANTICIPATOR H2 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS M5841 L1 HOT L2 1 LACO CHP Y B E O G L X W2 W3 R ODT 1 RTD 1 EHR 1 RTD 2 ODT 2 EHR 2 RTD 3 RD SYSTEM MONITOR FAN RELAY COMPRESSOR CONTACTOR CHANGEOVER VALVE EM HT RELAY RTD 1 AUX HT LED GREEN EM HT LED RED FAN SWITCH ON AU...

Page 18: ... OFF COOL H2 FALL H1 FALL C1 2 3 4 5 6 H1 C1 ANTICIPATOR H2 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS M5843 L1 HOT L2 1 LACO CHP Y B E O G L X W2 W3 R ODT 1 RTD 1 EHR 1 RTD 2 ODT 2 EHR 2 RTD 3 RD SYSTEM MONITOR FAN RELAY COMPRESSOR CONTACTOR CHANGEOVER VALVE EM HT RELAY RTD 1 AUX HT LED GREEN EM HT LED RED FAN SWITC...

Page 19: ... H2 FALL H1 FALL C1 2 3 4 5 6 H1 C1 ANTICIPATOR H2 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS M5845 L1 HOT L2 1 LACO CHP Y B E O G L X W2 W3 R ODT 1 RTD 1 EHR 1 RTD 2 ODT 2 EHR 2 RTD 3 RD SYSTEM MONITOR FAN RELAY COMPRESSOR CONTACTOR CHANGEOVER VALVE EM HT RELAY AUX HT LED GREEN EM HT LED RED FAN SWITCH ON AUTO SYSTE...

Page 20: ...1 FALL C1 2 3 4 5 6 H1 C1 ANTICIPATOR H2 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS M5847 L1 HOT L2 1 LACO CHP Y B E O G L X W2 W3 R ODT 1 RTD 1 EHR 1 RTD 2 ODT 2 EHR 2 RTD 3 RD SYSTEM MONITOR FAN RELAY COMPRESSOR CONTACTOR CHANGEOVER VALVE EM HT RELAY RTD 1 AUX HT LED GREEN EM HT LED RED FAN SWITCH ON AUTO SYSTEM SW...

Page 21: ...ic Interstage Differential The mercury switch of each stage of heat makes at a slightly different temperature that is the mercury makes the contacts of the first stage bulb at one temperature and the second stage bulb at another temperature The difference between these two temperatures is the interstage differential Interstage differential is the difference between the two make points when the bul...

Page 22: ... the scaleplate so selected LEDs show Make sure insert is completely seated in recessed area Let scaleplate pop back then set levers to desired position FILTER LED lights when the filter is clogged and needs replacement CHECK LED lights when something needs to be checked or done to maintain efficient operation of system See heating system instructions for CHECK LED meaning EM HT LED lights when th...

Page 23: ...d either manually or automatically Manual changeover control requires a system switch movement to change the mode The reversing valve is activated by moving the system switch to COOL for cooling or to HEAT for heating operation Automatic changeover is accomplished by one of the mercury bulb switches in the thermostat On a system with automatic changeover on cooling the changeover valve is energize...

Page 24: ...hen even with a few degrees droop the space temperature stays near the desired setting This is done by calibrating the thermostat high by 5 F 3 C the amount of expected offset This offset compensates for differential and droop at high load factors so the thermostat switches at the setpoint At warm temperatures heat is added to the thermostat to compensate for this offset at cold temperatures the e...

Page 25: ... way to reduce the cycling rate and improve the efficiency Additional capacity control methods used on other refrigeration systems unloading multiple compressors are not as likely to be seen on residential heat pumps With a single stage heat pump the compressor is normally controlled by the first stage and the auxiliary heat by the second stage The T874G N and R Thermostats are used for this purpo...

Page 26: ...ilure to defrost often enough permits too much ice to accumulate on the coil At the very least this hurts efficiency at worst it results in compressor damage Insufficient defrosting is a condition the heat pump manufacturer wants very much to avoid A 50 percent reduction in outdoor airflow is the maximum that would be tolerated So the designer of a heat pump would select a control point that puts ...

Page 27: ...Btu 293 kW which is controlled On Off The output is 100 000 Btu 293 kW or nothing A quality thermostat controls so closely that the occupants rarely detect changes in room temperature The same is true with 50 000 or 60 000 Btu 146 5 or 178 8 kW of heat pump auxiliary electric heat The T874 can provide the same high quality control This scheme also eliminates the need for outdoor thermostats and th...

Page 28: ...le oil can be entrained in the refrigerant and swept out of the crankcase through the changeover valve and dispersed in the piping and coils So the migration of refrigerant to the crankcase is undesirable because it can interfere with system lubrication and because the liquid refrigerant must be kept from going through the compressor Adding a crankcase heater creates enough temperature differentia...

Page 29: ... 1 stage heat 1 stage cool A1006 Standard OEM T874A1036 A1014 72 78 F 22 26 C stop locking cover no thermometer T874A1010 Use T874A1176 for Dept of Defense DoD application A1022 Heat anticipator set at 0 45A T874A1036 A1030 0 4A heat anticipator setting T874A1036 A1048 TRADELINE T874A1036 A1055 AAF logo locking cover T874A1036 A1063 Climatrol logo T874A1036 A1071 Lennox logo 0 5A heat anticipator ...

Page 30: ...o T874B1019 B1054 Climatrol logo T874B1019 B1062 Carrier logo T874B1019 B1070 Trane logo T874B1019 B1088 Fedders logo T874B1019 B1096 Climatrol logo T874B1019 B1104 Carteret logo T874B1019 B1112 Singer logo no 050240 03 T874B1019 B1120 Celsius scale T874B1019 B1138 Singer logo no 02005711 locking cover and lever T874B1019 B1146 Lennox logo no P 8 8895 T874B1019 B1153 Lennox logo Celsius scale T874...

Page 31: ...over and levers T874C1018 C1335 Singer logo Carteret T874C1018 C1343 Singer logo no 050240 04 T874C1018 C1350 Celsius scale T874C1018 C1368 12 F 67 C differential between heat 1 and heat 2 T874C1125 C1376 AAF logo locking cover 72 78 F 22 26 C stop T874C1018 C1384 Servel logo T874C1018 C1392 TRADELINE fast cycle performance on both heat stages T874C1018 Adjust anticipator faster for correct perfor...

Page 32: ...t anticipator set at 0 4A T874C1018 C1665 Wesco logo heat anticipator set at 0 8A T874C1018 C1673 Wards logo used with Q672B1285 B1293 Gas systems T874C1018 Q674B1034 Electric systems T874C1018 Q674B1075 Adjust anticipator faster for correct performance C1681 Lechauffage Urbain logo Celsius scale T874C1018 C1699 Duotherm logo used with Q672E1068 or Q672F1000 T874C1018 See subbase description for r...

Page 33: ...top fan current shunt for auto fan in heating T874D1165 D1334 Lennox logo Celsius scale T874D1165 D1342 Tappan logo no 080 13708 32 T874D1165 D1359 Singer logo no 02005740 Celsius scale 6 6 C differential between H1 and H2 T874D1165 Only 2 F 1 C differential between H1 and H2 D1367 Friedrich logo no 600 580 23 T874D1165 D1375 Singer logo no 02005713 Celsius scale controls 2 separate heat cool circ...

Page 34: ...5 F1068 Fast cycle performance on both heat stages T874C1018 F1076 Wesco logo T874F1015 F1084 Lennox logo T874F1015 F1092 Auto Gas logo T874F1015 F1100 Celsius scale T874F1015 F1118 Lennox logo Celsius scale T874F1015 F1126 Stages 1 and 2 heat electrically isolated used with Q672D1002 None F1134 Square D logo HCD 4 T874F1015 F1159 Wesco logo heat anticipator set at 0 8A T874F1015 F1167 York logo T...

Page 35: ...52 G1091 Lennox logo same as T872G1026 except meets DoD specs See subbase description for replacement information G1109 Tappan logo no 080 13708 52 adjustable anticipator stage 1 heat and cool changeover with cooling used with Q672F1117 Y594G1252 Wiring differences old new C X G1117 Changeover used with Q672F1125 Y594G1252 Wiring differences old new C X G1125 Lennox logo no 63A0401 Celsius scale i...

Page 36: ...stage 2 heat anticipator set to 1 2A used with Q672F1281 Y594G1252 G1323 Lennox special used with Q672L1201 and C815A1013 None G1331 York used with Q672J1021 Y594G1567 Wiring differences old new X X1 L X2 W E Y1 W1 and Y2 W2 jumpers required G1356 Westinghouse used with Q672L1219 T874D1165 Q674F1022 Wiring differences old new X X1 L X2 W E Y1 W1 and Y2 W2 jumpers required G1364 York used with Q672...

Page 37: ...bbase description for replacement information R1032 York logo fixed anticipator stage 1 and 2 heat and stage 1 cool changeover with cooling used with Q672L1011 Y594R1664 R1040 Lennox logo fast cycle stage 2 heat fixed anticipator stage 1 heat and cool isolated stage 2 heat switch changeover with cooling used with Q672B1202 no P 8 11221 Q672L1029 See subbase description for replacement information ...

Page 38: ...Y594R1672 R1230 Amana logo no C62397 1 used with Q672L1300 W89 None R1255 Singer logo used with Q672L1326 and W89 None R1271 Westinghouse logo used with Q672L1375 and W89 Y594R1664 R1297 York Celsius scale used with Q672L1011 None R1305 Used with Q672L1235 and W89 None R1321 Duotherm logo used with Q672L1409 and W89 None R1339 Williamson used with Q672L1391 Y594R1243 T872S Heat pump model 2 stage ...

Page 39: ...T1004 None B1137 RC RH jumper isolated G terminal Q674B1018 RC RH jumper required B1145 Fedders special Q674B1034 RC RH jumper required B1152 Fedders special auto fan operation in heat and cool Q674B1075 B1160 Lennox heat pump circuit used with T872R1024 includes compressor lockout in EM HT Y594R1243 Wiring differences old new V VR R M Y Y W2 F G R O B1178 General Electric no AY28X107 auto fan ope...

Page 40: ...ch C1060 Fedders special Q674C1058 C1078 General Electric no AY28X109 Q674C1058 C1086 Command Aire heat pump used with T872H1009 Y594H1012 C1102 TRADELINE Q674C1058 Q672D System None Fan None D1002 Standard OEM used with T872F1126 Q674D1040 D1010 Lennox special None D1028 Carrier RC RH jumper None D1036 Carrier no HH93AZ070 RC RH jumper Q674D1040 RC RH jumper required D1044 General Electric no AY ...

Page 41: ...EAT AUTO COOL OFF Fan AUTO ON F1000 With EM HT LED used with T872C1699 Q674F1022 Remove W3 X2 jumper to E X2 F1018 Heat pump heat mode changeover Chek Lite used with T872G1000 Y594G1252 Wiring differences old new W W2 X1 X F1026 Chek Lite W2 X2 jumper Q674F1022 F1034 Airtemp EM HT LED RC RH and X2 E jumpers Q674F1022 If RC RH jumper removed on Q672F1034 Q674F1022 does not replace F1042 W2 X2 jumpe...

Page 42: ...de changeover EM HT and AUX HEAT LEDs compressor lockout in EM HT used with T872G1133 Y594G1252 F1240 Lennox cool mode changeover EM HT and SERVICE LEDs used with T872G1240 None F1257 Westinghouse cool mode changeover EM HT and AUX HEAT LEDs auto fan in EM HT used with T872G1034 Y594G1252 Wiring differences old new W W2 F1265 Wesco Addison Chek and EM HT LEDs used with T872G1281 G1265 Y594G1252 Wi...

Page 43: ...ferences old new C X J1062 Westinghouse EM HT and AUX HEAT LEDs used with T872G1034 Y594G1252 Wiring differences old new W W2 Q672K System OFF HEAT AUTO COOL Fan None K1004 Carrier no HH93AZ072 Q674E1049 Fan switch does not function K1012 Oneida Heater no 30A0288 01 System OFF WOOD WOOD OIL OIL used with T872F1175 T874F1155 Q674K1026 Q672L System EM HT HEAT OFF COOL Fan ON AUTO L1003 Lennox heat p...

Page 44: ...L1144 Lennox V VR jumper EM HT and SERVICE LEDs isolated stage 2 heat used with T872R1131 C815A1013 None L1151 Westinghouse AUX HT and EM HT LEDs used with T872R1149 Y594R1243 Wiring differences old new W W2 L1169 Carrier no HH93AZ071 EM HT LED used with T872G1257 HH07AT073 None L1177 York DoD EM HT LED used with T872G1299 Y594G1567 L1185 Bard used with T872R1164 Y594R1243 L1193 Heil Quaker no NAX...

Page 45: ...angeover evaporative cooler circuit Fan AUTO ON System AUTO used with T872C1459 None N1019 Goettl heat pump heat mode changeover evaporative cooler circuit W1 Y1 jumper used with T872C1459 None N1027 Siegler special used with T872C1707 None Q672P System EM HT HEAT COOL P1009 Carrier special no HH93AZ069 used with T872G1075 HH07AT071 Y594R1243 Replacement has OFF system switch position Table 7 Q672...

Page 46: ...1 51 53 Carrier logo part no HH07AT174 used with Q674B Y594C1421 or T874A1036a When using the T874C1036 set stage 1 heat anticipator for total current draw of fan and stage 1 heat primary A1119 82 Obsolete Sears logo part no 541 91441 49 9144 F C scaleplate used with Q674E1007 used in Y594A1068 T874A1036 Replacement has F scaleplate A1127 44 Obsolete Climate Control logo part no 02005936 C scalepl...

Page 47: ...cludes Allen wrench and screws to lock cover T874A1036 A1317 44 Obsolete McQuay logo part no 60685301 no scaleplate used with Q674A E G T874A1036 A1325 75 Obsolete McQuay logo part no 60685401 no scaleplate used with Q674C1306 and outdoor thermistor to display outdoor temperature T874A1036 Replacement does not have ability to display external temperature or momentary system switch position A1341 4...

Page 48: ...ith Q674B T874A1036 Replacement has F scaleplate replacement is beige A1622 44 Obsolete York logo part no 2TH04703224A includes Allen wrench and screws to lock cover and non adjustable range stops set at 72 F max heat and 78 F min cool T874A1010 T874B 1 stage heat 2 stage cool B1001 44 Obsolete Honeywell logo T874B1019 B1019 44 Honeywell logo TRADELINE model includes Allen wrench and screws to loc...

Page 49: ...4C1421 or T874C1018a When using the T874C1018 set stage 1 heat anticipator for total current draw of fan and stage 1 heat primary C1083 44 Obsolete Trane logo used with Q674E1007 used in Y594C1082 T874C1018 C1117 44 Honeywell logo C scaleplate T874C1018 Replacement has F scaleplate C1125 60 61 92 Obsolete Honeywell logo 12 F 6 7 C differential between stage 1 heat and stage 2 heat used with Q674G1...

Page 50: ...Q674N1023 T874C1018 C1372 52 Obsolete Honeywell logo used with Q674B1190 T874C1018 Q674B1034 For systems requiring automatic fan in cooling mode only T874C1018 Q674B1075 For systems requiring automatic fan in heating and cooling C1398 105 Obsolete Fedders logo F C scaleplate used with Q674L1090 Y594R1425a Wiring differences old new K E C X replacement has F scaleplate C1406 105 Obsolete Climatrol ...

Page 51: ... Y594C1355 T874C1018 C1703 45 Obsolete Intertherm logo used with Q674B1000 used in Y594C1363 T874C1018 C1737 44 Obsolete Honeywell logo Carrier part no HH621603 T874C1018 C1745 44 Obsolete AAF Snyder General logo part no 4ELN7919 T874C1018 C1752 219 Obsolete McQuay Snyder General logo part no 061202402 12 F offset between H1 and H2 F C scaleplate no C1 anticipation used with Q674C1363 T8611M2025 C...

Page 52: ... E1197 G1104 T874D1165 Replacement has F scaleplate D1124 44 Obsolete Airtemp special T874D1165 D1132 44 Honeywell logo C scaleplate T874D1165 Replacement has F scaleplate D1140 44 Obsolete Solaron special T874D1165 Replacement has F scaleplate D1157 51 53 146 Carrier logo part no HH07AT172 C scaleplate used with Q674B or Q674F1030 F1063 T874D1165a Replacement has F scaleplate set H1 anticipator f...

Page 53: ...sed with Q674B1075 used in Y594D1149 T874D1165 D1330 44 Obsolete Trane logo part no 13080242 C scaleplate T874D1165 Replacement has F scaleplate D1355 44 Obsolete Climate Control special part no 02005942 C scaleplate 6 C 11 F differential between H1 and H2 T874D1165 Replacement has 2 F differential between H1 and H2 D1363 44 Obsolete McQuay logo part no 02005943 12 F 6 6 C differential between H1 ...

Page 54: ... Obsolete Reznor logo F C scaleplate used with Q674E1007 used in Y594D1248 T874D1165 Replacement has F scaleplate D1678 44 Obsolete Honeywell logo Saudi Oger special C scaleplate one setpoint lever used with Q674A K T874D1165 Replacement has F scaleplate separate heating and cooling setpoint levers D1686 98 Obsolete McQuay logo part no 60685501 8 F 4 4 C differential between H1 and H2 6 F 3 3 C di...

Page 55: ...te AAF Snyder General logo F C scaleplate no cooling anticipation used with Q674E1312 C1298 66804407 See OEM for replacement D1926 226 Obsolete AAF Snyder General logo F C scaleplate no cooling anticipation used with Q674G1120 66804406 See OEM for replacement D1934 44 Bard logo T874D1165 D1942 82 Honeywell logo TRADELINE model used with Q674E1403 used in Y594D1347 designed to replace York part no ...

Page 56: ...te T874D1165 Replacement has F scaleplate D2122 224 225 Obsolete McQuay T874D2023 Replacement has C scaleplate T874D1165 Replacement has F scaleplate D2130 226 Obsolete McQuay See OEM for replacement D2148 44 Obsolete Dry Aire Systems logo F C scaleplate T874D1165 D2155 139 Hydroheat logo Premier White color F C scaleplate used with Q674F1634 T874D1165 Q674B1018a Replacement system switch HEAT OFF...

Page 57: ...ages 1 and 2 heat electrically isolated used with Q674D1008 None F1072 44 Obsolete Wesco logo heat anticipator factory set at 0 8A T874F1015 F1098 189 Obsolete Lennox logo used with Q674D1008 to control an M839 T874F1015 Set H1 and H2 anticipators to lowest settings F1106 95 Obsolete Oneida logo part no 30A0287 02 used with Q674K1018 on combination wood and oil applications T874F1155 F1114 44 Hone...

Page 58: ...L G1097 155 Obsolete Honeywell logo Rheem part no ZXMT B79 used with Q674F1238 41 20797 14 Y594G1252a G1105 153 Obsolete Heat Wave Southwest Mfg logo H2 anticipator factory set at 1 2A used with Q674F1170 Y594G1252a G1113 103 Obsolete Carrier Heat Pump System Control logo meets DoD specifications H2 anticipator factory set at 0 8A used with Q674L1041 Y594G1419a Wiring differences old new C X jumpe...

Page 59: ... Q674D1040 Wiring differences old new Y Y2 O Y1 W W2 jumper W1 Y2 G1345 160 Obsolete York logo part no 2TH11702624A C scaleplate used with Q674J1027 Y594G1575a G1352 73 Obsolete Command Aire logo 12 F differential between H1 and H2 for night setback used with Q674C1066 Y594H1012a Wiring differences old new Y1 O Y2 Y L R R none R L jumper required no night setback T8600D1004 programmable Wiring dif...

Page 60: ...8403 197 used with Q674F1345 used in Y594G1328 Y594G1252a Wiring differences old new Y1 O C X W1 Y X L G1568 160 Obsolete Luxaire logo part no 026 00068 000 C scaleplate used with Q674J1126 used in Y594G1351 Y594G1367a Replacement has F scaleplate G1576 169 Obsolete Coleman logo part no 3600 373 changeover in heating and cooling mode used with Q674F1402 used in Y594G1377 Y594G1633a G1584 73 Obsole...

Page 61: ... logo part no 1505756 used with Q674J1175 used in Y594G1500 Y594G1252a Wiring differences old new E W2 W1 W3 X E C X G1782 216 Obsolete Arcoaire logo part no 1506756 used with Q674J1175 used in Y594G1518 Y594G1252a Wiring differences old new E W2 W1 W3 X E C X G1790 161 Obsolete Carrier logo Premier White color C scaleplate includes Allen wrench and screws to lock cover used with Q674J1191 Y594G12...

Page 62: ... RC RH jumper required includes night setback G1956 30 103 126 183 Obsolete Carrier logo Canada Premier White color C scaleplate includes locking cover Y594G1476 Replacement has F scaleplate G1964 160 York logo Canada Premier White color C scaleplate used in Y594G1625 Y594G1575a Replacement has F scaleplate G1972 169 Honeywell logo TRADELINE model used with Q674F1584 used in Y594G1633 Y594G1633a G...

Page 63: ...8 used with Q674C1470 Y594H1012a Wiring differences old new Y1 O Y2 Y replacement has MALFUNCTION LED only H1146 205 Trane logo part no X13510598010 Y594H1012a Wiring differences old new Y1 O Y2 Y H1153 173 Obsolete Carrier Heat Pump System Control logo part no HH07AT167 F C scaleplate used with Q674C1322 used in Y594H1053 None See subbase description for replacement information H1161 74 Obsolete ...

Page 64: ...0 198 Obsolete Carrier logo part no HH07AT176 used with Q674E1270 HH93AZ189 Y594G1419a E W2 jumper required L1018 138 165 Obsolete Carrier Multiplex System logo part no HH07AT178 used with Q674B1356 HH93AZ192 or Q674C1264 HH93AZ193 See OEM for replacement L1026 198 Obsolete Honeywell logo BDP part no P272 2786 used with Q674E1304 Y594G1419a E W2 jumper required L1034 203 Obsolete McQuay logo part ...

Page 65: ...age heat used with another T874 for night setback Q1005 44 Honeywell logo T874A1036 Q1013 44 Obsolete Lennox logo part no 13F1201 F C scaleplate T874A1036 Replacement has F scaleplate Q1021 44 Obsolete Lennox logo part no 13F1301 C scaleplate T874A1036 Replacement has F scaleplate T874R Heat pump model 2 stage heat 1 stage cool manual changeover R1004 47 Obsolete Honeywell logo used with Q674B1042...

Page 66: ...erences old new V VR R M Y F G X B Y W A T R O E X2 R1186 182 Obsolete Honeywell Advanced Heat Pump System logo used with Q674L1231 and W89 None R1194 115 Obsolete Amana logo used with Q674L1249 and W89 Y594R1243a R1202 201 Obsolete Intertherm logo part no 9111871 used with Q674L1264 or Q674L1595 used in Y594R1185 Y594R1672a Wiring differences old new W2 W Z no connection K X W G W1 H X B R1210 10...

Page 67: ...674L1496 used in Y594R1284 Y594R1763a R1434 134 Ruud logo part no 41 20796 32 used with Q674L1504 used in Y594R1649 Y594R1300a R1442 134 Rheem logo part no 41 20796 28 used with Q674L1504 used in Y594R1631 Y594R1300a R1459 134 Obsolete Honeywell logo Rheem part no 41 20796 25 used with Q674L1504 Y594R1300a R1467 108 Honeywell logo used with Q674L1512 used in Y594R1292 Y594R1292a R1475 123 Honeywel...

Page 68: ...ng differences old new W2 W X B Z F K X2 W1 O R1707 209 Trol A Temp by Honeywell logo Premier White color used with Q674L1678 used in Y594R1490 None See Trol A Temp for replacement R1715 209 Trol A Temp by Honeywell logo used with Q674L1186 used in Y594R1508 None See Trol A Temp for replacement R1723 218 Obsolete No logo Snyder General part no 654958B07 F C scaleplate used with Q674L1702 and C815A...

Page 69: ...ect replacement for Y594R1748 T874R1939 Q674L1801 American Standard logo ASYSTAT 651A and Y594R1136 T874R1053 Q674L1140 R1962 115 Obsolete Consolidated Industries logo part no 9036100 Premier White color used with Q674L1843 used in Y594R1771 Y594R1680a Includes CHECK LED R1970 120 York logo Canada Premier White color C scaleplate used in Y594R1789 used with C815A1039 Y594R1672a Replacement has F s...

Page 70: ... setback used with Q674C1363 61202502 See OEM for replacement W1064 220 Obsolete AAF Snyder General logo part no 066804408 12 F differential between H2 and H3 for night setback used with Q674C1363 66804408 See OEM for replacement W1072 140 Obsolete Honeywell logo Inter City Products used in Y594W1030 T8611M2025 programmable Includes night setback W1080 220 McQuay logo part no 073318901 Premier Whi...

Page 71: ...system transformer only B1091 45 Obsolete Carrier part no HH93AZ184 factory installed RC RH jumper Q674B1034 B1109 47 Obsolete Addison heat pump used with T874R1012 Y594R1243a Wiring differences old new W1 W2 B1117 44 Obsolete Carrier part no HH93AZ180 factory installed RC RH jumper Q674B1018a B1125 53 Obsolete York part no 2TB04700324A used with T874D1041 Q674B1075a Jumper RC RH replacement has n...

Page 72: ...h T874L1018 HH07AT178 See OEM for replacement B1372 44 Obsolete Trane part no BAS 0427 used with T874A D Q674B1018 B1380 46 Obsolete Trane part no BAS 0426 used with T874A D Q674B1075 B1398 48 Obsolete Trane part no BAS 0431 FILTER LED used with T874A D Q674B1034 Replacement has no LEDs B1406 172 Obsolete Carrier part no HH93AZ200 FAULT and CHECK FILTER LEDs used with T874H1070 HH07AT166 T874H1088...

Page 73: ...I Mammoth heat pump used with T874K1001 Y594R1419a Wiring differences old new RH RC R W1 B W3 W2 W2 W1 remove Y1 W1 jumper C1108 143 Obsolete Northrup special AUX HEAT LED used with T874G1139 Y594R1243a Wiring differences old new Y1 Y W1 W2 C X C1116 76 Obsolete McQuay part no 02005959 two LEDs used with T874D1116 Q674C1058 Replacement has no LEDs C1124 79 Obsolete LSI Mammoth heat pump RESET LED ...

Page 74: ...See thermostat description for replacement information C1298 76 225 Obsolete McQuay part no 60684801 SERVICE LED used with T874A1523 A1549 D1918 See OEM for replacement C1306 75 Obsolete McQuay part no 60685001 SERVICE LED spring return momentary system switch position used with T874A1325 See OEM for replacement C1314 72 Obsolete Trane part no BAS 0429 used with T874A F Q674C1058 C1322 173 Obsolet...

Page 75: ...1 O Y2 Y L R W Y jumper required night setback C1512 97 Obsolete Carrier part no HH93AZ216 System Override Auto Off includes two LEDs used in Y594 T8600D2028 programmable Wiring differences old new L R W O W Y jumper required night setback C1520 72 Obsolete Carrier part no HH93AZ210 used with T874D2049 used in Y594D1388 Q674C1058 C1538 163 Climate Master part no AQ5354 System Off Auto Override inc...

Page 76: ...rt no D68535 7 used with T874C1059 C1331 used in Y594C1009 Q674E1049 RC RH jumper required E1064 83 Obsolete RC RH jumpered internally EM HEAT LED Q674E1049 E1072 82 Carrier part no HH93AZ176 RC RH jumpered internally Q674E1049 RC RH jumper required E1080 82 Trane part no BAY28X184 Q674E1049 E1098 85 Obsolete Used with T874A D Q674E1049 RC RH jumper required E1106 185 Obsolete ITT Nesbitt See OEM ...

Page 77: ...is beige color E1429 87 Carrier Canada part no HH93AZ177 W gray color includes LOCKOUT LED removable jumper between RC and RH terminals Q674E1049 RC RH jumper required Replacement has no LOCK OUT LED and is beige color E1445 82 Obsolete Carrier part no HH93AZ217 W gray color removable jumper between RC and RH terminals Q674E1049 RC RH jumper required Replacement is beige color E1460 224 McQuay log...

Page 78: ...594G1252 Q674F1212 or Y594G1252a F1220 178 Used with T874N1016 used in Y594N Q674F1220 F1238 155 Obsolete Rheem part no 41 20797 14 AUX HEAT and EM HEAT LEDs used with T874G1097 G1212 G1220 G1238 Y594G1252a F1246 156 Obsolete Westinghouse heat pump EM HEAT and AUX HEAT LEDs auto fan in emergency heat mode changeover in cooling mode Y594G1252a F1253 157 Obsolete Wesco Addison heat pump used with T8...

Page 79: ...Carrier two speed compressor heat pump used with T874S1001 T8611M2025 programmable Includes night setback F1519 231 Obsolete Nordyne used with T874G1832 G1840 used in Y594G1542 G1559 Y594G1252a Replacement has auto changeover in cooling mode only F1535 229 Obsolete Lennox heat pump gray color used with T874G1857 used in Y594G1583 Y594G1161a Wiring differences old new E X2 C B L F F1543 204 Obsolet...

Page 80: ...t is beige color G1179 202 Obsolete McQuay logo part no 073319601 includes two LEDs Q674G1161 Replacement has no LEDs Q674J System EM HT AUTO OFF Fan AUTO ON J1001 180 Obsolete Singer heat pump part no 02005964 EM HEAT LED changeover heat mode See OEM for replacement J1019 159 Obsolete Westinghouse heat pump EM HT LED System EM HT ON OFF used with T874G1048 Y594G1252a Wiring differences old new W ...

Page 81: ...leplate J1209 160 TRADELINE designed to replace Y594G1013 York part no 2TH11702424 Y594G1229 York part no 6TH11702424 and York part no 2TH11704124 used with T874G1865 used in Y594G1567 Y594G1567a J1217 171 Obsolete Nordyne part no 9132250 used with T874J1036 J1044 Y594J1019 Wiring differences old new F L J1225 160 Obsolete TRADELINE gray color designed to replace Y594G1013 York part no 2TH11702424...

Page 82: ...4J1001 L1082 104 Obsolete Crispaire heat pump W2 H jumper EM HEAT LED used with T874R1061 R1111 Y594R1243a Replacement has auto fan in emergency heat mode L1090 105 Obsolete Fedders heat pump EM HEAT LED changeover in heat mode used with T874C1398 C1406 C1414 Y594R1425a Wiring differences old new K E C X L1108 106 Obsolete Westinghouse EM HEAT LED Y594R1243a L1116 107 Obsolete Carrier part no HH93...

Page 83: ...594R1672a L1280 233 Obsolete Lennox no 52C7601 used with T874W1023 and W89 Y594W1014a L1298 182 Obsolete Singer heat pump used with T874R1160 and W89 See OEM for replacement L1314 115 Obsolete Westinghouse heat pump used with T874R1244 and W89 Q674L1207 or Y594R1243a L1322 127 Obsolete EM HEAT and AUX HEAT LEDs used with T874C1455 Y594R1243a L1330 120 Obsolete York heat pump used with T874R Y594R1...

Page 84: ... Y594R1300 Y594R1300a L1538 130 Obsolete Snyder General heat pump used with T874R1483 R1517 R1566 and C815A1005 used in Y594R1318 R1342 R1375 Y594R1763a Wiring differences old new C B W1 W E X2 X F 132 Obsolete Used with T874R1574 R1582 used in Y594R1383 R1391 Y594R1243a Wiring differences old new C X X L W W2 L1546 140 Obsolete Rheem part no 41 20797 21 three LEDs used with T874W1031 and C815A100...

Page 85: ...698 Y594R1672a Replacement is beige Designed to replace Y594R1011 York part no 2TH11702224 used with T874R1913 used in Y594R1706 Y594R1664a Replacement is beige L1785 103 Obsolete Carrier part no HH93AZ175 W Canada gray color System Supl Ht Heat Off Cool includes one LED Y594G1476a Wiring differences old new C X Y1 W1 jumper required L1793 124 Obsolete Carrier Canada part no HH93AZ186 W gray color...

Page 86: ...R1821 Y594R1797a L1934 123 Obsolete Addison logo part no 843 277 includes three LEDs used with T874W1106 in Y594W1055 T8611M2025 Q674N System OFF HEAT COOL EVAP Fan AUTO ON N1015 60 Obsolete Goettl heat pump changeover in heat mode evaporative cooler circuit used with T874C1182 See OEM for replacement N1023 61 Obsolete Sigler heat pump evaporative cooler circuit used with T874C1349 See OEM for rep...

Page 87: ...40 A1191 46 Obsolete Amana logo part no P6853524R contains T874A1002 Q674B1075 T874A1036 Q674B1075 Y594B B1026 44 Trane part no BAYSTAT012 contains T874B1035 Q674B1018 T874B1019 Q674B1018 B1034 46 Obsolete Trane part no 163 552 1 contains T874B1035 Q674B1075 T874B1019 Q674B1075 B1042 88 Obsolete Goodman part no CHTS36 60 contains T874B1100 Q674E1338 T874B1019 Q674E1049 No LEDs on replacement Y594C...

Page 88: ...ns T874D1082 Q674C1009 T874D1165 Q674C1058 D1032 91 Obsolete Trane part no BAYSTAT011 contains T874D1082 Q674G1021 T874D1165 Q674G1070 D1040 46 Amana part no P68535 19R contains T874D1082 Q674B1075 T874D1165 Q674B1075 D1057 55 66 Obsolete Trane part no BAYSTAT007 contains T874D1082 Q674D1008 T874D1165 Q674D1040 D1149 46 Obsolete Amana part no P68535 20C contains T874D1322 Q674B1075 T874D1165 Q674B...

Page 89: ...Replacement has F scaleplate and 2 setpoint levers D1453 208 Obsolete Amana logo part no P1217501F contains T874D2163 and Q674D1172 T874D1165 Q674D1040 D1461 45 Obsolete Amana logo part no P1217701F contains T874D2171 and Q674B1562 T874D1942 Q674B1034 Y594E E1015 72 Obsolete Trane part no BAYSTAT015 contains T874E1040 Q674C1009 T874B1019 Q674C1058 Y594F F1022 44 Obsolete Contains T874F1031 and 400...

Page 90: ... A Temp contains T874G1758 Q674F1485 None See Trol A Temp for replacement G1500 216 Obsolete Comfortmaker part no 1505756 contains T874G1774 Q674J1175 See OEM for replacement G1518 216 Obsolete ArcoAire part no 1506756 contains T874G1782 Q674J1175 See OEM for replacement G1526 167 TRADELINE contains T874G1626 Q674F1436 None G1534 227 TRADELINE C white Australia contains T874G1824 Q674F1477 None G1...

Page 91: ...J1003 T874G1055 Q674J1035 Carrier part no 99TZ90040106 HH07AT171 HH93AZ173 Y594G1674 G1716 155 WaterFurnace logo part no TA21H03 contains T874G2046 and Q674F1667 Y594G1716 Y594H H1004 79 Obsolete LSI part no 73033901 contains T874H1039 and Q674C1124 T8600D2028 H2 is night setback H1012 164 Contains T874H1062 and Q674C1249 replaces T874H1005 Q674C1041 Y594H1012 H1020 177 Obsolete Mammoth part no 71...

Page 92: ...rt no 025 22285 000 contains T874R1145 and Q674L1272 Y594R1664 R1110 108 Obsolete Heil Quaker part no HQ712004HW contains T874R1137 and Q674L1132 Y594R1292 R1128 116 Obsolete Crispaire part no HP9 51 contains T874R1111 and Q674L1215 Y594R1243 Wiring differences old new A L R1136 109 Obsolete Contains T874R1053 and Q674L1140 Y594R1763 R1151 120 Obsolete York part no 2TH11702324 contains T874R1251 Q...

Page 93: ...ences old new W2 W X B Z F K X2 W1 O R1417 113 Obsolete Comfortmaker part no 1505 735 contains T874R1301 and Q674L1181 Y594R1243 Wiring differences old new X1 X R1425 168 SUPER TRADELINE contains T874R1616 and Q674L1587 Y594R1425 R1433 200 Obsolete Miller part no 9115900 contains T874R1624 and Q674L1595 Y594R1243 Wiring differences old new W2 W X B Z F K X2 W1 O R1441 136 Obsolete American Standar...

Page 94: ...4L1777 and C815A1054 Y594R1672 Replacement is beige R1706 120 Obsolete TRADELINE same as Y594R1664 except Premier White color contains T874R1913 and Q674L1777 direct replacement for Y594R1011 T874R1046 Q674L1272 York part no 2TH11702224 Y594R1664 Replacement is beige R1714 228 Obsolete Lennox part no 97E79 Canada Premier White color contains T874R1855 and Q674L1728 Y594R1763 Wiring differences old...

Page 95: ...bsolete Rheem logo part no 41 20796 47 contains T874R1996 and Q674L1504 Y594R1300 Y594W W1014 54 Contains T874W1015 Q674B1216 and C815A1005 Y594W1014 W1022 140 Obsolete Rheem part no 41 20797 19 contains T874W1031 Q674L1546 and C815A1005 T8611M2025 W1030 68 Obsolete Inter City Products part no 1072350 contains T874W1072 Q674L1835 and C815A1005 Outdoor Thermistor T8611M2025 programmable Includes ni...

Page 96: ...CONTACTOR 2 COMPRESSOR CONTACTOR 1 1 4 6 8 9 10 11 H2 FALL C2 ANTICIPATOR RISE RISE C1 C2 THERMOSTAT SUBBASE SYSTEM COMPONENTS H2 ANTICIPATOR NOTE Model Heating Cool ing No Bulbs Bulbs T874A H1 C1 T874B H1 C1 C2 T874C H1 H2 C1 T874D H1 H2 C1 C2 T874E C1 C2 T874D H1 H2 H1 FALL L1 HOT L2 1 RH W1 W2 O G Y2 Y1 RC HEAT RELAY 2 HEAT RELAY 1 HEAT OFF COOL SYSTEM SWITCH H1 ANTICIPATOR C1 ANTICIPATOR AUTO ...

Page 97: ...ECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M2904 B HEAT CHANGEOVER VALVE COOL CHANGEOVER VALVE FAN RELAY COMPRESSOR CONTACTOR 2 COMPRESSOR CONTACTOR 1 1 4 6 8 9 10 11 H2 FALL C2 ANTICIPATOR RISE RISE C1 C2 L1 HOT L2 1 R THERMOSTAT SUBBASE SYSTEM COMPONENTS H2 ANTICIPATOR L1 HOT L2 1 COOL HEAT FALL O G R W1 Y H1 C1 ANTICIPATOR H2 SYSTEM SWITCH FAN RELAY 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AN...

Page 98: ...R C1 ANTICIPATOR AUTO ON FAN SWITCH 2 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED CLOGGED FILTER SERVICE SWITCH M2905 THERMOSTAT SUBBASE SYSTEM COMPONENTS RC HEAT CHANGEOVER VALVE L1 HOT L2 1 COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR 2 COMPRESSOR CONTACTOR 1 1 4 6 8 9 10 11 H2 FALL C2 ANTICIPATOR RISE RISE C1 C2 Y1 Y2 HEAT RELAY 2 EXTERNAL FAN SWITCH 2 L1 HOT L2 1 ...

Page 99: ...SII CONTROL PANEL LO SPEED LED GREEN HI SPEED LED GREEN COOL LED YELLOW HEAT LED RED FAN SWITCH AUTO ON SYSTEM SWITCH HEAT OFF COOL C1 ANTICIPATOR H2 ANTICIPATOR H1 ANTICIPATOR 1 4 6 8 9 10 W1 G R W2 T Y1 L C H M5945 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 FALL H2 FALL CO RISE C1 RISE L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM ...

Page 100: ...Y1 O RH B W2 RC G W1 2 SYSTEM SWITCH HEAT OFF COOL ON AUTO FAN SWITCH HEAT RELAY 1 FAN RELAY HEAT RELAY 2 HEAT CHANGEOVER VALVE COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR 1 COMPRESSOR CONTACTOR 2 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 FALL H2 FALL C1 RISE L1 HOT L2 1 2 3 1 2 3 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED OPTIONAL FIELD WIRE JUMPER W3 AND F TO BE JUMPE...

Page 101: ...ONTACTOR 1 1 4 6 8 9 10 11 H2 FALL C2 ANTICIPATOR RISE RISE C1 C2 THERMOSTAT SUBBASE SYSTEM COMPONENTS H2 ANTICIPATOR R SYSTEM SWITCH HEAT OFF COOL L1 HOT L2 1 W1 T W2 HEAT RELAY 3 FAN RELAY W3 HEAT CHANGEOVER VALVE COMPRESSOR CONTACTOR 2 B Y2 Y1 SYSTEM SWITCH HEAT OFF COOL H1 ANTICIPATOR C1 H1 FALL H3 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M3674 AUTO ON FAN SW...

Page 102: ... C1 C1 ANTICIPATOR C2 H1 ANTICIPATOR H1 HEAT RELAY 1 HEAT RELAY 2 COMPRESSOR CONTACTOR 2 FALL L1 HOT L2 RH W2 Y2 Y1 L1 HOT L2 RC FALL H2 RISE C2 ANTICIPATOR RISE NO FAN SWITCH NO SYSTEM SWITCH W1 B 1 1 3 2 3 2 1 4 5 6 8 9 10 11 3 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 FALL L1 HOT L2 1 H2 FALL C1 RISE FAN SWITCH SYSTEM SWITCH AUTO ON HEAT OFF COOL COMPRESSOR CONTACTOR 1 O RELAY B RELAY AUX HT RELA...

Page 103: ...REQUIRED JUMPER HONEYWELL SUPPLIED FIELD INSTALLED C1 ANTICIPATOR H1 ANTICIPATOR FAN SWITCH AUTO ON SYSTEM SWITCH OVERRIDE HEAT OFF COOL 1 2 3 4 5 6 8 9 10 T W P S L B R G Y COMPRESSOR CONTACTOR FAN RELAY CLOSED DAY OPEN NITE B RELAY JUMPER COOL CHANGEOVER VALVE M8004 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 ANTICIPATOR H1 FALL M3722 C1 H2 ANTICIPATOR H2 FALL ECONOMIZER PACKAGE RISE RISE CO C1 ANTI...

Page 104: ...AN SWITCH R COMPRESSOR CONTACTOR Y1 B O G1 MED G2 K1 RELAY W1 C1 ANTICIPATOR C1 RISE HEAT RELAY 1 OFF K2 K1 K2 K1 K2 HI LO MED 3 SPEED FAN SCHEMATIC LO L2 L1 THERMOSTAT SUBBASE SYSTEM COMPONENTS 1 4 8 9 10 L1 HOT L2 1 H2 ANTICIPATOR M2863 H1 ANTICIPATOR C1 ANTICIPATOR FALL H1 R W2 W1 G ELEC HT RELAY FAN RELAY COOL RELAY CONTACT 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQ...

Page 105: ...1 RISE FALL H2 FALL H1 SYSTEM SWITCH EVAP HEAT COOL OFF 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED C1 ANTICIPATOR Y1 M2862 1 THERMOSTAT SUBBASE SYSTEM COMPONENTS 1 4 6 8 9 10 L1 HOT L2 1 FAN RELAY SYSTEM SWITCH OFF H2 ANTICIPATOR H1 H2 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M3723A AUTO ON FAN SWITCH R COMPRESSOR CONTACTOR G...

Page 106: ... SWITCH R W2 H1 ANTICIPATOR AUX HT RELAY W1 C WOOD COAL RELAY FALL YELLOW GREEN 1 4 8 9 10 THERMOSTAT SUBBASE SYSTEM COMPONENTS HEAT COOL SWITCH H1 FALL L1 HOT L2 1 C1 RISE M8005 2 1 2 H1 ANTICIPATOR C1 ANTICIPATOR 5 4 2 1 W1 B R G1 G2 O Y1 HI MED LO K2 K1 K2 K2 K1 COMPRESSOR CONTACTOR O RELAY K2 RELAY K1 RELAY B RELAY HEAT RELAY 1 SYSTEM SWITCH HEAT OFF COOL FAN SWITCH LO MED HIGH ON POWER SUPPLY...

Page 107: ...C1 ANTICIPATOR H1 ANTICIPATOR SYSTEM SWITCH HEAT OFF COOL FAN SWITCH AUTO ON NO 1 HEAT RELAY HEAT DAMPER COOL DAMPER FAN RELAY NO 1 COMP RELAY FILTER LED RED SERVICE LED YELLOW X2 X1 Y1 Y2 G RC RH B W2 W1 1 4 6 8 9 10 11 O THERMOSTAT SUBBASE SYSTEM COMPONENTS W2 W1 M7011 THERMOSTAT SUBBASE SYSTEM COMPONENTS Y2 RH RC Y1 H1 ANTICIPATOR H2 ANTICIPATOR H1 FALL FALL H2 1 4 5 6 8 9 10 11 NO FAN SWITCH N...

Page 108: ...ITCH HEAT OFF COOL COMPRESSOR CONTACTOR AUX HT RELAY HEAT CHANGEOVER VALVE FAN RELAY 6 5 4 3 2 1 X G R B W2 Y H2 FALL H1 RISE CO L1 HOT L2 1 C1 RISE COMPRESSOR CONTACTOR FAN RELAY CLOSED DAY OPEN NITE B RELAY SERVICE LED RED OVERRIDE LED RED FAN SWITCH AUTO ON H1 ANTICIPATOR SYSTEM SWITCH JUMPER COOL CHANGEOVER VALVE OVERRIDE HEAT OFF C1 ANTICIPATOR 1 2 3 4 5 6 8 9 10 W P S X L B R C G Y POWER SUP...

Page 109: ...YSTEM SWITCH OFF COOL C1 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED COOL RELAY FAN RELAY Z RELAY 8 9 10 Y R G Z 1 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 FALL L1 HOT L2 1 H2 FALL H1 FALL 1 4 6 8 9 S W2 R Y NO FAN SWITCH SYSTEM SWITCH HEAT COOL THERMOSTAT SUBBASE SYSTEM COMPONENTS SERVICE LED RED AUX HT RELAY COMPRESSOR CONTACTOR M1402A POWER SUPPLY PROVID...

Page 110: ...OMPRESSOR CONTACTOR 2 COMPRESSOR CONTACTOR 1 1 4 6 8 9 10 11 H2 FALL C2 ANTICIPATOR RISE RISE C1 C2 X1 3 OPTIONAL LED ON SOME MODELS THERMOSTAT SUBBASE SYSTEM COMPONENTS 3 H2 ANTICIPATOR CHECK L1 HOT L2 1 H2 ANTICIPATOR H1 ANTICIPATOR C1 ANTICIPATOR C2 ANTICIPATOR FALL H1 W2 W1 B G RH 1 2 3 3 2 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED JUMPER TERMINALS RC RH FOR S...

Page 111: ...AND OVERLOAD PROTECTION AS REQUIRED M7008 THERMOSTAT SUBBASE SYSTEM COMPONENTS Y2 OPEN NIGHT CLOSED DAY 3 4 6 8 10 SETBACK FALL RISE CO L1 HOT L2 1 2 L COMPRESSOR CONTACTOR SETBACK RELAY 9 RISE C1 L1 HOT L2 1 FAN RELAY Y2 SYSTEM SWITCH OFF AUTO H1 ANTICIPATOR CO H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED SERVICE LED ON SELECT MODELS M3680A AUTO ON FAN SWITC...

Page 112: ...Y CIRCUIT POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED MOMENTARY POSITION SPRING RETURN TO ON UPON SWITCH RELEASE FILTER LED ON SELECT MODELS 1 2 3 M5731 Y1 RC 1 M7025 THERMOSTAT SUBBASE SYSTEM COMPONENTS B Y2 W2 RH X H1 ANTICIPATOR H2 ANTICIPATOR C1 RISE H1 FALL FALL H2 C2 RISE C2 ANTICIPATOR C1 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION...

Page 113: ...1 ANTICIPATOR C1 ANTICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF AUTO FAN RELAY HEAT CHANGEOVER VALVE COMPRESSOR CONTACTOR M4729 1 3 4 6 8 9 10 Y1 O RC B W3 W2 W1 RH G X1 RESET LED RED O RELAY B RELAY HEAT RELAY 1 HEAT RELAY 2 B 1 THERMOSTAT SUBBASE SYSTEM COMPONENTS C G R H1 ANTICIPATOR C1 RISE H2 FALL C1 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED JUMPE...

Page 114: ...WITCH SYSTEM SWITCH OFF COMPRESSOR CONTACTOR AUTO X L1 HOT 1 L2 COOL CHANGEOVER VALVE 2 3 RESET FAN RELAY SETBACK CONTACT RISE RESET LED RED H2 ON T874G M7027 3 2 H1 FALL FALL L1 HOT L2 1 2 2 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED OPTIONAL FIELDWIRE JUMPER TO ALLOW SINGLE SYSTEM TRANSFORMER THERMOSTAT SUBBASE SYSTEM COMPONENTS M5997 HEAT RELAY 1 CONTACTOR COMPR...

Page 115: ...OSTAT 1 4 6 8 9 10 W1 B H2 FALL C1 RISE G R W2 Y1 C1 ANTICIPATOR AUTO ON FAN RELAY COMPRESSOR CONTACTOR SYSTEM SWITCH H1 FALL H2 FALL C1 RISE C2 RISE L1 HOT L2 L1 HOT L2 1 1 1 2 3 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED JUMPER RC RH FOR SINGLE TRANSFORMER O AND B TERMINALS ON SELECTED MODELS 2 3 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 ANTICIPATOR H2 ANTICIPATOR C2...

Page 116: ...COMPONENTS SUBBASE THERMOSTAT L1 HOT L2 1 L1 HOT L2 1 COMPRESSOR CONTACTOR 1 C2 ANTICIPATOR AUTO COOL HEAT OFF X1 RC W2 G Y1 W1 HEAT RELAY 1 FAN RELAY HEAT RELAY 2 COMPRESSOR CONTACTOR 2 Y2 H1 FALL H2 FALL CO RISE C1 RISE L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR SYSTEM S...

Page 117: ...SE C2 OFF SYSTEM SWITCH FAN SWITCH HEAT AUTO COOL ON AUTO R Y1 W1 Y2 FALL 6 8 10 9 11 1 H2 ANTICIPATOR C1 ANTICIPATOR C2 ANTICIPATOR HEAT RELAY 1 G COMPRESSOR CONTACTOR 2 H1 FALL H2 FALL CO RISE C1 RISE L1 HOT L2 1 L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR SYSTEM SWITCH F...

Page 118: ...CH FAN SWITCH AUTO ON OFF HEAT AUTO COOL COMPRESSOR CONTACTOR 1 COMPRESSOR CONTACTOR 2 M4668 1 SYSTEM FAULT CONTACT FAN RELAY HEAT RELAY 1 HEAT RELAY 2 LOCKOUT LED RED THERMOSTAT SUBBASE SYSTEM COMPONENTS W1 Y1 RC W2 B G RH C X Y2 11 10 9 8 6 4 C2 RISE C1 RISE H2 FALL H1 FALL L1 HOT L2 1 L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED H1 ANTICIPATOR H2 ANTIC...

Page 119: ...OFF COOL HEAT CHANGEOVER VALVE HEAT RELAY 1 COMPRESSOR CONTACTOR 1 FAN RELAY HEAT RELAY 2 L1 HOT L2 1 L1 HOT L2 1 COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR 2 AUTO FILTER LED YEL SERVICE LED RED W1 A2 A1 OFF AUTO SYSTEM SWITCH 1 M7022 THERMOSTAT SUBBASE SYSTEM COMPONENTS X2 L1 HOT L2 1 B X1 W2 T RC H1 ANTICIPATOR H2 ANTICIPATOR C1 RISE H1 FALL FALL H2 C2 RISE C2 ANTICIPATOR C1 ANTICIPATOR POWER SU...

Page 120: ...EANS AND OVERLOAD PROTECTION AS REQUIRED JUMPER RH RC FOR SINGLE TRANSFORMER 2 M3201B L1 HOT L2 1 COOL DAMPER HEAT DAMPER COMPRESSOR CONTACTOR 2 COMPRESSOR CONTACTOR 1 1 4 6 8 9 10 11 H2 FALL C2 ANTICIPATOR RISE RISE C1 C2 B THERMOSTAT SUBBASE SYSTEM COMPONENTS H2 ANTICIPATOR L2 1 OFF H1 ANTICIPATOR H2 ANTICIPATOR H1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M6008...

Page 121: ...AUTO COOL C2 ANTICIPATOR C1 ANTICIPATOR H2 ANTICIPATOR H1 ANTICIPATOR HEAT FAN RELAY HEAT RELAY COMPRESSOR CONTACTOR 1 COMPRESSOR CONTACTOR 2 W1 W2 RH Y1 RC Y2 M4664 W2 W1 RC HEAT CHANGEOVER VALVE OFF AUTO SYSTEM SWITCH 1 M7013 THERMOSTAT SUBBASE SYSTEM COMPONENTS B L1 HOT L2 1 Y2 HEAT RELAY 2 RH X A Y1 COMPRESSOR CONTACTOR 1 COMPRESSOR CONTACTOR 2 L1 HOT L2 1 H1 ANTICIPATOR H2 ANTICIPATOR C1 RISE...

Page 122: ... AS REQUIRED 1 SYSTEM COMPONENTS SUBBASE THERMOSTATS 2 3 4 5 6 H2 FALL NO FAN SWITCH OIL RELAY WOOD RELAY L1 HOT L2 1 X W1 R WOOD LED GREEN H2 ANTICIPATOR H2 FALL L1 HOT L2 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS L1 HOT L2 1 C1 RISE H1 FALL FAN SWITCH AUTO ON SYSTEM SWITCH OFF AUTO C1 ANTICIPATOR H2 ANTICIPATOR NO 1 HEAT RELA...

Page 123: ...DE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED JUMPER HONEYWELL SUPPLIED FIELD INSTALLED H2 MAKE OFFEST 8 F BELOW H1 MAKE 3 2 1 2 3 M100A THERMOSTAT SUBBASE SYSTEM COMPONENTS COMPRESSURE FAILURE Y1 RC 1 M5106A THERMOSTAT SUBBASE SYSTEM COMPONENTS B Y2 W2 RH H1 ANTICIPATOR H2 ANTICIPATOR C1 RISE H1 FALL FALL H2 C2 RISE C2 ANTICIPATOR C1 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND...

Page 124: ... POSITION SPRING RETURN TO ON UPON SWITCH RELEASE H1 AND C1 ARE DPST SWITCHES M531 Y1 W1 C1 ANTICIPATOR AUTO FALL FALL HEAT RELAY 1 HEAT RELAY 2 COMPRESSOR RELAY L1 HOT R FAN RELAY O AUTO OFF SERVICE LED RED A G 2 2 3 4 5 5 3 3 4 MOMENTARY CIRCUIT T T EXTERNAL TEMP READOUT THERMOSTAT SUBBASE SYSTEM COMPONENTS FAN SWITCH SYSTEM SWITCH RISE H2 THERMISTER W2 W3 Y2 1 2 4 5 6 7 8 9 10 C1 11 12 H3 OFFSE...

Page 125: ... HEAT RELAY 3 COMPRESSOR RELAY L1 HOT R FAN RELAY O AUTO OFF SERVICE LED RED A G 2 2 3 4 5 5 3 3 4 MOMENTARY CIRCUIT T T EXTERNAL TEMP READOUT THERMOSTAT SUBBASE SYSTEM COMPONENTS FAN SWITCH SYSTEM SWITCH H3 RISE RISE H2 THERMISTER COMPRESSOR CONTACTOR 2 W2 W3 Y2 1 2 4 5 6 7 8 9 10 C1 C2 11 12 H3 OFFSET 12 F FROM H2 FOR NIGHT SETBACK THERMISTOR INTERNAL TO THERMOSTAT L1 HOT L2 1 COOL CHANGEOVER VA...

Page 126: ...ON AS REQUIRED FIELD WIRE JUMPER TO ALLOW SINGLE SYSTEM TRANSFORMER 1 2 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 C1 ANTICIPATOR H2 ANTICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF HEAT EM HT COOL INTERNAL THERMOSTAT OVERLOAD SWITCH SUPPL ELEC HT RELAY COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR M4726 EM HT LED RED EM HT RELAY TIME DELAY FAN RELAY OUTDOOR THERMOSTAT EM HT RELAY CONTACT FAN RELAY HIGH...

Page 127: ... RELAY COOL CHANGEOVER VALVE OUTDOOR THERMOSTAT HEAT RELAY 1 HEAT RELAY CONTACT 1 HEAT RELAY 2 HEAT RELAY CONTACT 2 HEAT RELAY 3 2 COMPRESSOR CONTACTOR 1 N O SWITCH INSTALLER ADDED TO LIGHT SUPL HT LED WHEN COMPRESSOR OPERATION IS NOT NORMAL 2 COMPRESSOR FAULT HEAT 1 1 2 L1 HOT L2 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED OPTIONAL FIELD WIRE JUMPER TO CYCLE AUXILI...

Page 128: ...M HT LED RED W2 2 EM HT HEAT FAN RELAY HEAT RELAY 2 HEAT RELAY 1 W1 AUTO C Y H1 FALL H2 ANTICIPATOR H1 ANTICIPATOR C1 ANTICIPATOR H2 FALL C1 RISE COMPRESSOR CONTRACTOR 8 10 L1 HOT L2 1 G K L R THERMOSTAT SUBBASE SYSTEM COMPONENTS 4 6 H2 FALL H1 FALL C1 L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 C1 ANTICIPATOR H2 A...

Page 129: ...TICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF HEAT EM HT COOL M4727 Y R C L E Y1 G O 11 10 8 5 4 3 2 EM HT LED RED COMPRESSOR CONTACTOR 1 COMP FAILURE EM HT RELAY CONTACT EM HT RELAY COMPRESSOR CONTACTOR 2 OUTDOOR THERMSTAT SUPPL HT RELAY FAN RELAY COOL CHANGEOVER VALVE H2 FALL H1 FALL C1 L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SY...

Page 130: ...VIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 FALL C1 H1 C1 ANTICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF HEAT EM HT COOL AUX HT RELAY FAN RELAY AUX HT LED GREEN COOL CHANGEOVER VALVE COMPRESSOR FAILURE EM HT LED RED OUTDOOR THERMOSTAT OUTDOOR THERMISTOR COMPRESSOR CONTACTOR Y O X2 T R F B W G 1 2 3 4 5 6 RESET HEATER M5071 ...

Page 131: ...AN SWITCH A L M OUTDOOR THERMOSTAT SUPL ELEC HT RELAY X COMPRESSOR CONTACTOR OVERLOAD SWITCH INTERNAL THERMOSTAT HI PRESSURE SWITCH FAN RELAY EM HT RELAY CONTACT TIME DELAY FAN RELAY ELEC HT RELAY H2 FALL H2 ANTICIPATOR C1 RISE C1 ANTICIPATOR REMOVE FACTORY INSTALLED V VR JUMPER WHEN CONNECTING A TWO TRANSFORMER SYSTEM 2 2 SERVICE S Y C815A OUTDOOR THERMISTOR COOL CHANGEOVER VALVE V SERVICE LED RE...

Page 132: ... REMOVE FACTORY INSTALLED V VR JUMPER WHEN CONNECTING A TWO TRANSFORMER SYSTEM COMPRESSOR CONTACTOR OVERLOAD SWITCH INTERNAL THERMOSTAT HIGH PRESSURE SWITCH 2 V VR M F L Y E X A R FAN RELAY SERVICE OUTDOOR THERMOSTAT EM HT RELAY SUPPL ELEC HT RELAY EM HT RELAY EM HT RELAY C815A OUTDOOR THERMISTOR COOL CHANGEOVER VALVE EM HT LED YELLOW SERVICE LED RED EM HT AUTO ON FAN SWITCH RESET HEATER H1 C1 ANT...

Page 133: ...RE FAN SWITCH ON SYSTEM SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M8383 AUX HT RELAY 4 EM HT LED RED AUX HT LED GREEN EM HT HEAT COOL CHANGEOVER VALVE FAN RELAY EM HT RELAY AUTO Y C1 H1 FALL H1 C1 ANTICIPATOR H2 ANTICIPATOR H2 FALL COMPRESSOR CONTACTOR 6 O 5 R W2 L1 HOT L2 1 G 2 3 E X L1 THERMOSTAT SUBBASE SYSTEM COMPONENTS ...

Page 134: ...COMPONENTS H1 C1 ANTICIPATOR FALL H2 ANTICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF HEAT EM HT LED RED EM HT COOL EM HT RELAY EM HT RELAY EM HT RELAY DEFROST RELAY DEFROST RELAY FAN RELAY M4720 COMPRESSOR CONTACTOR HIGH PRESSURE SWITCH COOL CHANGEOVER VALVE LOW AMBIENT CUTOFF O Y G E X1 X2 L CHECK LED GREEN OPTIONAL COMP FAILURE DEVICE B W2 W3 R HEAT CONTRACTOR 3 HEAT CONTRACTOR 2 OUTDOOR THERMO...

Page 135: ...TCH X V M L FAN RELAY H2 FALL H2 ANTICIPATOR C1 RISE C2 RISE C2 ANTICIPATOR REMOVE FACTORY INSTALLED V VR JUMPER WHEN CONNECTING A TWO TRANSFORMER SYSTEM 2 2 VR Y A OUTDOOR THERMOSTAT HIGH SPEED COMPRESSOR CONTACTOR LOW SPEED COMPRESSOR CONTACTOR COOL CHANGEOVER VALVE OUTDOOR THERMOSTAT SUPPL ELEC HT RELAY SUPPL ELEC HT RELAY EM HT RELAY C815A OUTDOOR THERMISTOR M2853 EM HT LED YELLOW EM HT RELAY ...

Page 136: ... ODT 2 EHR 2 RTD 3 RD SYSTEM MONITOR FAN RELAY COMPRESSOR CONTACTOR COOL CHANGEOVER VALVE EM HT RELAY RTD 1 AUX HT LED GREEN EM HT LED RED FAN SWITCH ON AUTO SYSTEM SWITCH EM HT HEAT OFF COOL H2 FALL H1 FALL C1 2 3 4 5 6 H1 C1 ANTICIPATOR H2 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED AUXILIARY HEAT LED AVAILABLE ON SOME MODELS THERMOSTAT SUBBASE SYSTEM ...

Page 137: ...PRESSOR CONTACTOR AUX HT RELAY EM HT RELAY EM HT LED RED EM HT HEAT OFF COOL COMP FAULT LED YELLOW SYSTEM SWITCH FAN SWITCH AUTO ON 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED OPTIONAL FIELD WIRE JUMPER TO CYCLE AUXILIARY HEAT RELAY WITH H1 INSTEAD OF H2 FASTER RESPONSE 2 ELEC HT RELAY M2857 H1 C1 ANTICIPATOR H2 ANTICIPATOR 2 R8233B THERMOSTAT SYSTEM COMPONENTS SUBB...

Page 138: ... M7755 H2 FALL 8 10 11 C1 RISE C2 RISE THERMOSTAT SUBBASE SYSTEM COMPONENTS MOTOR 3 MOTOR 1 OUTDOOR FAN RELAY 1 DEFROST SWITCH RELAY TM1 TM2 OUTDOOR FAN RELAY 2 DEFROST SWITCH LOW AMBIENT THERMOSTAT 1 OUTDOOR FAN RELAY 3 1ST STAGE SHORT CYCLE CONTROL 2ND STAGE SHORT CYCLE CONTROL 1ST STAGE LOW PRESSURE LIMIT 2ND STAGE LOW PRESSURE LIMIT TIME DELAY HEATER ECONOMIZER RELAY ENTHALPY CONTROL ENTHALPY ...

Page 139: ...11 12 C1 RISE C2 RISE THERMOSTAT SUBBASE SYSTEM COMPONENTS MOTOR 3 MOTOR 1 MOTOR 2 OUTDOOR FAN RELAY 1 DEFROST SWITCH RELAY DEFROST RELAY TM1 TM2 OUTDOOR FAN RELAY 2 DEFROST SWITCH OUTDOOR THERMOSTAT 1 OUTDOOR FAN RELAY 3 1ST STAGE SHORT CYCLE CONTROL 2ND STAGE SHORT CYCLE CONTROL 1ST STAGE LOW PRESSURE LIMIT 2ND STAGE LOW PRESSURE LIMIT TIME DELAY HEATER ECONOMIZER RELAY ENTHALPY CONTROL ECONO MI...

Page 140: ...ON C815A OUTDOOR THERMISTOR AUX HT RELAY FAN RELAY SERVICE EM HT RELAY COMPRESSOR CONTACTOR HEAT CHANGEOVER RELAY 12 6 5 4 3 2 1 T W2 G X SERVICE LED YELLOW EM HT LED RED Z K Y W1 R 11 1 THERMOSTAT SUBBASE SYSTEM COMPONENTS M5955 H2 FALL H1 FALL C1 L1 HOT L2 1 FAN SWITCH AUTO ON FAN RELAY AUX HT RELAY H RELAY EM HT RELAY CHANGEOVER VALVE COOL COMPRESSOR CONTACTOR C815A1039 THERMISTOR SYSTEM SWITCH...

Page 141: ...COMPRESSOR FAILURE HEAT CHANGEOVER VALVE COMPRESSOR CONTACTOR LACO CHP EM HT RELAY COOL CHANGEOVER VALVE FAN RELAY RD RTD1 H1 FALL H2 FALL C1 RISE 2 3 4 5 6 8 10 AUX HT LED GRN EM HT LED RED AUTO ON FAN SWITCH SYSTEM SWITCH EM HT HEAT OFF COOL H2 ANTICIPATOR H1 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M7012 C1 ANTICIPATOR THERMOSTAT SUBBASE SYSTEM COM...

Page 142: ...6 H1 C1 ANTICIPATOR H2 ANTICIPATOR AUTO ON SYSTEM SWITCH EM HT HEAT OFF COOL FAN RELAY G R K L 1 C Y W1 SERVICE LED RED EM HT LED YELLOW SERVICE COMPRESSOR CONTACTOR EM HT RELAY AUX HT RELAY POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 CO L1 HOT L2 CHANGEOVER VALVE FALL 4 W2 M8379 THERMOSTAT SUBBASE SYSTEM COMPONENTS FAN SWITCH Z ...

Page 143: ... REQUIRED CONNECT CHANGEOVER RELAY TO B FOR HEAT CHANGEOVER TO O FOR COOL CHANGEOVER THERMOSTAT SUBBASE SYSTEM COMPONENTS LACO CHP ODT 1 RTD 1 EHR 1 RTD 2 ODT 2 EHR 2 RTD 3 COMPRESSOR MONITOR R L X W2 G O E Y B HEAT CHANGEOVER VALVE COMPRESSOR CONTACTOR EM HT RELAY COOL CHANGEOVER VALVE FAN RELAY RTD 1 RD 10 8 H2 ANTICIPATOR 6 5 4 3 2 H1 C1 ANTICIAPTOR FAN SWITCH AUTO ON SYSTEM SWITCH EM HT HEAT O...

Page 144: ...Y HEAT RELAY 1 OUTDOOR THERMOSTAT HEAT RELAY CONTACT 1 HEAT RELAY 2 HEAT RELAY CONTACT 2 HEAT RELAY 3 X RELAY P RELAY COOL CHANGEOVER VALVE SYSTEM SWITCH EM HT OR SUPL HT HEAT OFF FAN SWITCH AUTO ON H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ON MODELS INCLUDING EXTERNAL JUMPER W2 W1 AND L F 1 3 4 5 6 8 9 10 11 O P X E C L ...

Page 145: ...Y B RELAY G COOL CHANGEOVER VALVE EM HT RELAY COMPRESSOR CONTACTOR O Y E B SYSTEM SWITCH EM HT HEAT OFF COOL H1 C1 ANTICIPATOR C1 H1 FALL H2 W3 AUX HT RELAY H2 ANTICIPATOR 1 2 3 2 3 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED TERMINAL LABELED C X ON SOME MODELS W3 TERMINAL AVAILABLE ON SOME MODELS ONLY M3683A AUTO ON FAN SWITCH FALL R 2 3 4 6 THERMOSTAT SUBBASE SYSTEM...

Page 146: ...SWITCH FAN SWITCH AUTO ON SUPL HT HEAT COOL FAN RELAY COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR 1 HEAT RELAY 2 HEAT RELAY 1 M4722 1 2 4 6 8 9 10 Y C L E W2 R G O HEAT RELAY CONTACT 2 HEAT RELAY CONTACT 1 HEAT RELAY 3 OUTDOOR THERMOSTAT FALL SUPL HT LED RED FALL AUTO ON H1 HEAT OFF COOL L2 M5652A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FAN SWITCH L1 HOT SYSTEM SWI...

Page 147: ...MPRESSOR CONTACTOR EM HT RELAY COOL CHANGEOVER VALVE RD EM HT LED YELLOW AUX HT LED GREEN H2 FALL EM HT RD RTD1 EHR1 RTD2 ODT2 EHR2 RTD3 RTD1 H1 C1 ANTICIPATOR ODT1 A SERVICE LED RED C1 H2 ANTICIPATOR 2 3 4 5 6 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 FALL L1 HOT L2 1 H2 FALL CO RISE C1 RISE H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION A...

Page 148: ...CONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FACTORY INSTALLED JUMPER THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 C1 ANTICIPATOR H2 ANTICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF HEAT EM HT COOL FAN RELAY EM HT RELAY COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR M1628A COMPRESSOR FAILURE C815A OUTDOOR THERMISTOR SYSTEM LED GREEN CHECK LED RED AUX HT LED YELLOW 2 3 4 5 6 11 12 RESET Y T C X E W1 R ...

Page 149: ...1 1 2 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FOR Q674L1454 IS OFF THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 C1 ANTICIPATOR H2 ANTICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON SUPL HT HEAT COOL COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR FAN RELAY M4723 2 3 4 6 R W2 L SUPL HT LED RED C G O E Y HCR 1 HCR 2 HCR 2 HCR 3 ODT HCR 1 RESET HEATER ...

Page 150: ...TOR RESET SYSTEM SWITCH FAN SWITCH AUTO ON OFF HEAT EM HT COOL COMPRESSOR CONTACTOR FAN RELAY M1858 2 3 4 5 6 11 12 Y T C X E R G O COOL CHANGEOVER VALVE 3R SEQ 1 SEQ 2 EM HT RELAY 4R 4R 5R HPS 4R 4R C815A OUTDOOR THERMISTOR SYSTEM LED GREEN EM HT LED RED W1 AUX HT LED YELLOW H2 FALL H1 FALL C1 L1 HOT L2 1 G R K W2 L C Z W1 2 3 4 6 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS R...

Page 151: ...MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS L1 HOT L2 1 H1 C1 ANTICIPATOR H2 ANTICIPATOR SYSTEM SWITCH EM HT HEAT OFF COOL FAN SWITCH AUTO ON AUX HT LED GREEN EM HT LED RED COMP FAILURE CHANGEOVER VALVE HEAT COMPRESSOR CONTACTOR Y X B L E W2 R G O 6 5 4 3 2 1 EM HT RELAY RD RTD 1 FAN RELAY RTD 1 ODT 1 EHR 1 RTD 2 ODT 2 EHR 2 RDT 3 CHANGEOVER VALVE COOL M106A 1 8 ...

Page 152: ...H SUPL HT HEAT OFF COOL M2017 HCR 1 ODT HCR 1 HCR 2 FAN RELAY COOL CHANGEOVER VALVE HCR 2 HCR 3 COMPRESSOR CONTACTOR SUPL HT LED RED H1 C1 ANTICIPATOR RESET HEATER H2 ANTICIPATOR H2 FALL H1 FALL C1 L1 HOT L2 1 G W U B F R T X2 O Y 2 1 3 4 5 6 FAN RELAY AUX HEAT RELAY COMP FAILURE O D STAT C815A OUTDOOR THERMISTOR COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND ...

Page 153: ...AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS L1 HOT L2 1 H1 C1 ANTICIPATOR H2 ANTICIPATOR SYSTEM SWITCH EM HT HEAT OFF COOL FAN SWITCH AUTO ON AUX HT LED GREEN EM HT LED RED CHECK LED RED COMP FAILURE CHANGEOVER VALVE HEAT COMPRESSOR CONTACTOR Y X B L E W2 R G W3 O 6 5 4 3 2 1 EM HT RELAY RD RTD 1 FAN RELAY RTD 1 ODT 1 EHR 1 RTD 2 ODT 2 EHR 2 RDT 3 CHANGEOVER VALVE COOL...

Page 154: ...8 7 5 4 3 2 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FIELD REMOVABLE JUMPER THERMOSTAT SUBBASE SYSTEM COMPONENTS H2 FALL H1 FALL L1 HOT L2 1 RISE C1 2 2 1 H1 FALL H2 FALL C1 RISE C2 RISE L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR C2 ANTIC...

Page 155: ...1 COMPRESSOR CONTACTOR 2 EM HT AUTO ON FAN SWITCH H1 ANTICIPATOR H2 ANTICIPATOR H3 ANTICIPATOR RESET FALL FALL FALL H1 H3 H2 AUX HT LED GREEN POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED CONNECT CHANGEOVER RELAY TO O TERMINAL FOR CHANGEOVER IN COOLING OR TO B TERMINAL FOR CHANGEOVER IN HEATING M156A C1 ANTICIPATOR RISE RISE C2 ANTICIPATOR C1 C2 EM HT LED RED CHECK LED ...

Page 156: ...HT HEAT AUTO COOL HEAT RELAY 1 HEAT RELAY 2 EM HT LED RED EM HT RELAY FAN RELAY COMPRESSOR CONTACTOR 1 COMPRESSOR CONTACTOR 2 M8376 THERMOSTAT SUBBASE SYSTEM COMPONENTS E G Y2 Y1 6 11 X2 W2 W1 H2 ANTICIPATOR H1 FALL 1 EM HT HEAT SYSTEM SWITCH H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR C2 ANTICIPATOR AUTO COOL W2 M5985 POWER SUPPLY PROVIDE DISCONECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 SYS...

Page 157: ...SE H2 ANTICIPATOR 8 L1 HOT 1 10 9 C1 RISE G AUX HT RELAY L2 W1 C AUX HT LED RED 6 SYSTEM SWITCH OFF AUTO C1 ANTICIPATOR O Y1 COOL CHANGEOVER VALVE H1 FALL C1 RISE CO H2 FALL CO RISE L1 HOT L2 1 THERMOSTAT SUBBASE SYSTEM COMPONENTS COMPRESSOR CONTACTOR FAN RELAY HEAT RELAY 1 OUTDOOR THERMOSTAT HEAT RELAY CONTACT 1 HEAT RELAY 2 HEAT RELAY CONTACT 2 HEAT RELAY 3 X RELAY P RELAY COOL CHANGEOVER VALVE ...

Page 158: ...IGH PRESSURE SWITCH OVERLOAD AUTO H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR C1 RISE FALL EM HT RELAY 6 V 9 8 10 CO FALL H1 FALL H2 F L2 HOT L1 1 Y 1 M E R FAN RELAY THERMOSTAT SUBBASE SYSTEM COMPONENTS 2 H1 FALL Y1 G W1 X W2 R AUTO COOL SYSTEM SWITCH H1 ANTICIPATOR AUTO ON FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M7010 THERMOSTAT SUBBASE SYSTEM COMP...

Page 159: ...EAT OFF Y H2 FALL CO RISE C1 ANTICIPATOR RISE C1 L1 HOT L2 1 2 S W3 E T MODE SIGNAL COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR EM HT RELAY HEAT RELAY 1 HEAT RELAY 2 FAN RELAY MODE SIGNAL 5 AUX HT LED GRN EM HT LED YEL SERVICE LED RED 2 2 3 JUMPER FACTORY INSTALLED 3 OFF COOL DEFROST RELAY FAN SWITCH ON SYSTEM SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M8382 ...

Page 160: ...HERMAL SWITCHES FOR HEATING ELEMENTS HTR 1 C1 RISE HTR 3 HTR 2 OUTDOOR THERMOSTAT EMR3 L1 HOT L2 1 L1 HOT L2 1 C2 RISE 8 3 C1 ANTICIPATOR C2 ANTICIPATOR 9 11 10 EM HT LED RC X1 RH EMR1 EMR1 Z EM HT RELAY 2 1 2 3 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED OPTIONAL FIELD WIRE JUMPER TO ALLOW SINGLE SYSTEM TRANSFORMER FOR Q674F1048 DELETE C2 STAGE M8380 SYSTEM SWITCH OF...

Page 161: ...S REQUIRED M2852A R H1 FALL E AUTO ON FAN SWITCH VR Y M OUTDOOR THERMOSTAT SUPL ELEC HT RELAY X COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR OVERLOAD SWITCH INTERNAL THERMOSTAT HI PRESSURE SWITCH FAN RELAY EM HT RELAY CONTACT TIME DELAY FAN RELAY TIME DELAY FAN RELAY SYSTEM MONITOR AUTO H2 FALL H2 ANTICIPATOR CO RISE C1 RISE C1 ANTICIPATOR REMOVE FACTORY INSTALLED V VR JUMPER WHEN CONNECTING A TWO T...

Page 162: ...ION AS REQUIRED OPTIONAL FIELD WIRE JUMPER TO CYCLE W2 WITH H1 IN EM HT FASTER RESPONSE THERMOSTAT SUBBASE SYSTEM COMPONENTS M4710 H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF HEAT EM HT AUTO COOL EM HT LED RED EM HT RELAY CONTACT 1 T6031 REFRIGERATON TEMPERATURE CONTROLLER EM HT EM HT RELAY COMPRESSOR CONTACTOR SEQUENTIAL RELAY FAN REVERSING SOLENOID COM EM HT...

Page 163: ... Y2 X2 O B X1 E RH FAN RELAY EM HT RELAY L1 HOT L2 1 L1 HOT L2 1 2 FACTORY SUPPLIED FIELD INSTALLED JUMPER TO E X2 FOR CONSTANT POWER TO EM HT LIGHT IN EM HT POSITION 3 OPTIONAL FIELDWARE JUMPER TO ALLOW SINGLE SYSTEM TRANSFORMER 6 C1 ANTICIPATOR C2 11 10 W2 8 THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL 9 4 OFF COOL OUTDOOR THERMOSTAT FAN SWITCH ON SYSTEM SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEA...

Page 164: ...H AUTO ON 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED OPTIONAL FIELD WIRE JUMPER TO CYCLE W2 WITH H1 IN EM HEAT FASTER RESPONSE 2 H2 ANTICIPATOR 2 X C DF RS FAN L1 HOT L2 EM HT RELAY FAN REVERSING SOLENOID T6031 REFRIGERATION TEMPERATURE CONTROLLER EM HT RELAY CONTACT 1 EM HT L1 HOT L2 EM HT LED RED H1 ANTICIPATOR H1 FALL H1 ANTICIPATOR CO RISE C1 RISE SEQUENTIAL RE...

Page 165: ...YSTEM MONITOR FAN RELAY RD COOL CHANGEOVER VALVE EM HT RELAY LACO COMPRESSOR CONTACTOR CHP 2 3 4 5 6 8 9 10 H1 FALL H1 ANTICIPATOR H2 ANTICIPATOR CHANGEOVER RISE C1 RISE C1 ANTICIPATOR OFF COOL AUTO HEAT EM HT SYSTEM SWITCH AUTO ON FAN SWITCH AUX HT LED GRN EM HT LED RED POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED W3 TERMINAL ON SELECT MODELS 1 2 2 M1589 THERMOSTAT SU...

Page 166: ...LVE FAN RELAY OUTDOOR THERMOSTAT EM HT LED GREEN X AUX HT RELAY COMPRESSOR CONTACTOR W2 Y M5720 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 SYSTEM COMPONENTS SUBBASE THERMOSTAT L2 1 COMPRESSOR CONTACTOR H2 ANTICIPATOR M2860 AUTO ON FAN SWITCH W1 C1 E W2 H1 ANTICIPATOR C1 ANTICIPATOR CO RISE C1 FALL H2 FALL H1 R X Y1 SYSTEM SWITCH EM HT HEAT OFF COOL AUTO G TIME DELA...

Page 167: ...1 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 CO RISE FALL H2 6 9 C1 RISE H2 ANTICIPATOR 10 FALL H1 H1 ANTICIPATOR 1 2 AUTO ON FAN SWITCH EM HT LED RED W2 L1 HOT L2 1 AUX HT RELAY Y COMPRESSOR CONTACTOR 2 B TERMINAL ON SELECT MODELS R B HEAT CHANGEOVER VALVE G FAN RELAY E EM HT RELAY O COOL CHANGEOVER VALVE COMPRESSOR FAILURE 2 L SYSTEM COMPONENTS SUBBAS...

Page 168: ...OR CONTACTOR HEAT RELAY CONTACT EM HT RELAY AUX HT RELAY COOL CHANGEOVER VALVE FAN RELAY M5722 HEAT RELAY CONTACT SYSTEM COMPONENTS SUBBASE THERMOSTAT POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 H2 ANTICIPATOR EM HT AUX HT RELAY POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 RISE CO RISE C1 6 8 9 10 X B Y COMPRESSOR CONTACTOR FALL H2 5 W...

Page 169: ...QUIRED 1 SYSTEM COMPONENTS SUBBASE THERMOSTAT L1 HOT L2 1 H1 FALL H2 FALL 2 4 6 O G R W2 E L C Y CO RISE C1 RISE 8 9 10 H1 ANTICIPATOR C1 ANTICIPATOR SYSTEM SWITCH SUPL HT ON OFF FAN SWITCH AUTO ON FAN RELAY COOL CHANGEOVER VALVE OUTDOOR THERMOSTAT EM HT RELAY 1 EM HT RELAY CONTACT 1 EM HT RELAY 2 EM HT RELAY CONTACT 2 EM HT RELAY 3 2 COMPRESSOR CONTACTOR 1 N O SWITCH INSTALLER ADDED TO LIGHT EM H...

Page 170: ...F M5725 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 SYSTEM COMPONENTS SUBBASE THEROMSTAT B W H2 FALL CO RISE C1 RISE O G T R 1 2 3 4 5 6 8 9 10 Y X2 C1 ANTICIPATOR RESET HEATER H1 ANTICIPATOR SYSTEM SWITCH EM HT AUTO OFF FAN SWITCH AUTO ON C815A OUTDOOR THERMISTOR FAN RELAY COOL CHANGEOVER VALVE OUTDOOR THERMOSTAT AUX HT RELAY EM HT RELAY COMPRESSOR CONTACTOR ...

Page 171: ...2 HAS 10 F FIXED SETBACK FROM H1 ON T874G1485 0 12 F ADJUSTABLE ON T874G1535 RESET IN MOMENTARY POSITION SPRING RETURN TO OFF UPON SWITCH RELEASE THERMOSTAT SUBBASE SYSTEM COMPONENTS 1 4 6 8 9 10 C1 ANTICIPATOR H2 ANTICIPATOR H1 ANTICIPATOR FAN SWITCH AUTO ON SYSTEM SWITCH AUTO OFF RESET RESET CIRCUIT RESET CIRCUIT COMPRESSOR RELAY SERVICE LED RED ON LED YELLOW COOL CHANAGEOVER VALVE HEAT RELAY 2 ...

Page 172: ...UTO CO RISE C1 RISE R L JUMPER SUPPLIED BY HONEYWELL 2 H1 ANTICIPATOR MALFUNCTION LED RED HEAT CHANGEOVER VALVE MALFUNCTION SWITCH FAN RELAY COMPRESSOR CONTACTOR COOL CHANGEOVER VALVE L1 HOT L2 1 RISE C1 H1 ANTICIPATOR 1 FAN SWITCH ON AUTO M5727 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 SYSTEM COMPONENTS SUBBASE THERMOSTAT SYSTEM SWITCH AUTO OFF 2 3 4 5 7 8 9 10 H...

Page 173: ...WITCH HEAT AUTO COOL ON AUTO M5728 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 SYSTEM COMPONENTS SUBBASE THERMOSTAT H2 FALL C1 RISE C2 RISE 4 6 8 9 10 11 X W1 W2 Y2 L RH E G Y1 RC L1 HOT L2 1 HEAT RELAY 1 HEAT RELAY 2 EM HT RELAY FAN RELAY COMRESSOR CONTACTOR 1 AUX HT LED GREEN EM HT LED RED COMRESSOR CONTACTOR 2 SYSTEM MONITOR C1 ANTICIPATOR C2 ANTICIPATOR H2 ANTIC...

Page 174: ...2 EHR 2 RTD 3 RD COMPRESSOR FAILURE FAN RELAY COMPRESSOR CONTACTOR HEAT CHANGEOVER VALVE EM HT RELAY RTD 1 AUX HT LED GREEN EM HT LED RED FAN SWITCH ON AUTO SYSTEM SWITCH EM HT HEAT AUTO OFF COOL H2 FALL H1 FALL 2 3 4 5 H1 ANTICIPATOR H2 ANTICIPATOR C1 RISE FALL 7 8 9 10 C1 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS ...

Page 175: ...AY EM HT RELAY HEAT CHANGEOVER VALVE W1 RELAY COMPRESSOR RELAY W3 RELAY COOL CHANGEOVER VALVE COMPRESSOR MONITOR FAN RELAY H2 FALL H1 ANTICIPATOR C ANTICIPATOR H2 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED REMOVE JUMPER WHEN W1 RELAY IS USED FACTORY INSTALLED JUMPER 1 M5067 FAN SWITCH AUTO ON SYSTEM SWITCH EM HT HEAT OFF COOL 3 2 2 3 THERMOSTAT SUBBASE SY...

Page 176: ... OVERLOAD PROTECTION AS REQUIRED TERMINAL LABELED C X ON SOME MODELS W3 TERMINAL ON SOME MODELS ONLY 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 W3 R G Y AUX HT RELAY FAN RELAY EM HT RELAY B RELAY M5986A THERMOSTAT SUBBASE SYSTEM COMPONENTS 11 12 COMPRESSOR CONTACTOR EM HT EM HT LED RED AUX HT LED GREEN COOL CHANGEOVER VALVE H2 FALL...

Page 177: ...D ON SOME MODELS Y TERMINAL MAY BE LABELED Y1 EMERGENCY HEAT RUNS CONTINUOUSLY WHEN SWITCH IN IN EM HT POSITION C1 ANTICIPATOR H1 ANTICIPATOR FAN SWITCH AUTO ON SYSTEM SWITCH AUTO HEAT OFF COOL 2 4 8 9 10 W2 X L B R G Y AUX HT RELAY FAN RELAY EM HT RELAY B RELAY M5987A THERMOSTAT SUBBASE SYSTEM COMPONENTS COMPRESSOR CONTACTOR EM HT EM HT LED RED AUX HT LED GREEN H2 FALL H2 ANTICIPATOR 3 5 W3 W1 W3...

Page 178: ...RED 1 SYSTEM COMPONENTS SUBBASE THERMOSTAT H2 FALL CO RISE 3 4 5 6 8 9 10 11 12 EXTERNAL JUMPER SUPPLIED BY HONEYWELL 2 R Y G F C E X P O W1 2 H2 ANTICIPATOR C1 ANTICIPATOR COMPRESSOR CONTACTOR O D T HCR1 HCR1 X RELAY P RELAY COOL CHANGEOVER VALVE HCR2 HCR2 HCR3 H1 FALL CO RISE L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONE...

Page 179: ...M SWITCH FAN SWITCH AUTO ON OFF AUTO COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR M1400 FAULT LED RED CHECK FILTER LED YELLOW FAN RELAY 12 11 10 9 8 4 3 2 G R O 2 C 3 Y RISE C1 H1 FALL H2 FALL C1 RISE C2 RISE L1 HOT L2 1 1 2 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED REMOVABLE JUMPER THERMOSTAT SUBBASE SYSTEM COMPONENTS HA CA ODA SYSTEM SWITCH FAN SWITCH AUTO ON OFF ...

Page 180: ... COOL CHANGEOVER VALVE FAN RELAY H C R 1 H C R 1 H C R 2 H C R 2 H C R 3 COMPRESSOR CONTACTOR 1 9 10 FALL CO RISE C1 ANTICIPATOR H2 ANTICIPATOR C1 RISE HEAT PUMP GRN DEFROST RED MANUAL RED AUTO YEL O D T H1 FALL L1 HOT L2 1 H1 ANTICIPATOR 2 OFF AUTO SYSTEM SWITCH FAN SWITCH ON AUTO FAN RELAY M5730 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED SETBACK STAGE OFFSET 12 F 7...

Page 181: ...TBACK 1 2 2 THERMOSTAT SUBBASE SYSTEM COMPONENTS 1 R2 R1 B O Y G FAN SWITCH AUTO ON SYSTEM SWITCH RESET LED RED OFF AUTO C1 H2 H1 ANTICIPATOR FAN RELAY COOL CHANGEOVER VALVE HEAT CHANGEOVER VALVE COMPRESSOR CONTACTOR C1 ANTICIPATOR RISE 2 3 3 RISE CO 4 6 7 8 9 10 LOCKOUT RESET RELAY X H2 FALL C0 RISE H1 FALL M18623 H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS ...

Page 182: ...TCH EM HT HEAT OFF COOL H1 ANTICIPATOR H1 H2 H2 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M3686 FALL R RISE L C1 HEAT RELAY 3 EM HT RELAY CONTACT OUTDOOR THERMOSTAT AUTO ON FAN SWITCH X W3 OPTIONAL COMPRESSOR FAILURE DEVICE DEFROST RELAY REVERSING VALVE EM HT RELAY CONTACT HIGH PRESSURE SWITCH HEAT RELAY 1 HEAT RELAY 2 AUTO FALL CO C1 ANTICIPATOR 1 2 4...

Page 183: ... MODELS C2 ANTICIPATOR C1 ANTICIPATOR SYSTEM SWITCH EM HT AUTO OFF FILTER LED YELLOW R 3 R 6 RANDOM START R 8 OPT R 5 R 5 T2 HEAT PUMP OPERATION R 10 BIOLERLESS OPERATION R 11 EM HT RELAY ELEC HT RELAY STG 2 R 10 R 2 R 1 FAN RELAY R 6 OVERLOAD R 6 COMPRESSOR CONTACTOR R 8 R 10 R 11 R 11 CHANGEOVER VALVE ELEC HT RELAY STG 1 FAN DELAY RELAY W1 Y1 G R W2 EM HT LED RED E X2 Y2 X1 1 4 6 8 9 10 11 H1 AN...

Page 184: ...AY TIME CLOCK FAN SWITCH AUTO ON SYSTEM SWITCH OFF AUTO COMPRESSOR FAULT LED RED C1 ANTICIPATOR H1 ANTICIPATOR THERMOSTAT SUBBASE SYSTEM COMPONENT M18587 4 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FAN SYSTEM SWITCH COOL HEAT H1 C ANTICIPATOR H1 FALL M3951 AUTO ON FAN SWITCH R G L Y X H2 E W2 B EM HT LED YELLOW 1 2 3 5 4 6 SERVICE LED RED COMPRESSOR FALL AUX HT O T ...

Page 185: ... H2 RISE E O C1 ANTICIPATOR C1 RISE L1 EM HT LED RED ON 1 2 4 6 8 9 10 AUX HT LED GREEN COMPRESSOR CONTACTOR COMPRESSOR FAILURE FALL COOL CHANGEOVER VALVE 2BH O D S 1BH SH 1BH H2 ANTICIPATOR THERMOSTAT SUBBASE SYSTEM COMPONENTS L1 HOT L2 1 SYSTEM SWITCH OFF H1 ANTICIPATOR H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M3953 RH C1 Y1 H2 RISE W1 C1 ANTICIPATOR C2...

Page 186: ...SOR CONTACTOR 2 FALL HEAT RELAY RC Y2 11 C2 ANTICIPATOR W2 HEAT RELAY 2 COMPRESSOR CONTACTOR 1 L1 HOT L2 1 AUTO ON FAN SWITCH FAN RELAY IGNITION RELAY OFF HEAT B G H2 ANTICIPATOR THERMOSTAT SUBBASE SYSTEM COMPONENTS L1 HOT L2 1 SYSTEM SWITCH OFF H1 ANTICIPATOR H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M3955 RH C1 Y1 H2 RISE W1 C1 ANTICIPATOR C2 RISE AUTO 1...

Page 187: ...R2 R5 HEAT RELAY 2 L1 HOT X 5 HI SPEED FAN RELAY LO SPEED FAN RELAY HIGH TEMP SWITCH HIGH PRESSURE SWITCH R4 HIGH LOW FAN SWITCH 2 HEAT H2 ANTICIPATOR COOL CONTACTOR LOCKOUT RELAY LR THERMOSTAT SUBBASE SYSTEM COMPONENTS L1 HOT L2 1 SYSTEM SWITCH H1 ANTICIPATOR H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M3958 RH C1 Y1 H2 RISE W1 C1 ANTICIPATOR C2 RISE AUTO 1...

Page 188: ... FAN RELAY SYSTEM SWITCH OFF EM HT H1 ANTICIPATOR H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED OPTIONAL REMOVABLE JUMPER TO ALLOW SINGLE SYSTEM TRANSFORMER WIRE JUMPER FOR SERVICE LIGHT M3978 AUTO ON FAN SWITCH L F X A Y H2 E M C1 ANTICIPATOR C1 RISE EM HT LED YELLOW HEAT 2 3 4 6 8 10 SERVICE LED RED COMPRESSOR CONTACTOR FALL O D S H2 ANTICIPATOR THERMOSTAT S...

Page 189: ... ANTICIPATOR 3 COOL RELAY COOL THERMOSTAT SUBBASE SYSTEM COMPONENTS SYSTEM SWITCH C1 LO HI O W1 HEAT RELAY COOL CHANGE OVER VALVE L2 1 ON H1 ANTICIPATOR H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED MOMENTARY POSITION SPRING RETURN TO ON UPON SWITCH RELEASE M3959 C1 Y1 H2 RISE W1 C1 ANTICIPATOR C2 RISE AUTO 1 4 6 8 9 10 COMPRESSOR CONTACTOR 2 FALL HEAT RELAY 1...

Page 190: ...OR SINGLE TRANSFORMER 2 M3203B L1 HOT L2 1 FAN RELAY O CHANGEOVER RELAY COOL CHANGEOVER RELAY HEAT COMPRESSOR CONTACTOR 2 COMPRESSOR CONTACTOR 1 1 4 6 8 9 10 11 H2 FALL C2 ANTICIPATOR RISE RISE C1 C2 B THERMOSTAT SUBBASE SYSTEM COMPONENTS H2 ANTICIPATOR L1 HOT L2 1 FAN RELAY SYSTEM SWITCH OFF EM HT H1 ANTICIPATOR H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M...

Page 191: ...D M2974 B EM HT RELAY COMPRESSOR CONTACTOR AUX HT RELAY 1 4 6 8 9 10 H2 FALL RISE RISE CO C1 B RELAY L1 HOT L2 1 H2 ANTICIPATOR 2 EM HT LED RED Y AUX HT LED GREEN COOL HEAT THERMOSTAT SUBBASE SYSTEM COMPONENTS COMPRESSOR FAULT H1 FALL O G R E L W2 FAN RELAY COOL CHANGEOVER VALVE OFF ON SYSTEM SWITCH H1 ANTICIPATOR C1 ANTICIPATOR AUTO ON FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLO...

Page 192: ...ED GREEN EM HT LED RED 1 2 3 4 5 6 11 FAN SWITCH AUTO ON EM HT HEAT OFF COOL SYSTEM SWITCH H2 FALL POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FIELD REMOVABLE JUMPER 1 2 2 M2970 THERMOSTAT SUBBASE SYSTEM COMPONENTS H1 FALL W1 Y1 W2 COMPRESSOR CONTACTOR HEAT AUTO COOL SYSTEM SWITCH H1 ANTICIPATOR AUTO ON FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD P...

Page 193: ...H2 FALL RISE C1 L1 HOT L2 1 H2 ANTICIPATOR 2 CHECK LED RED Y AUX HT LED GREEN COOL HEAT W3 W2 EM HT RELAY COMPRESSOR FAULT L HEAT CHANGEOVER VALVE COOL CHANGEOVER RELAY 3 11 12 CO RISE EM HT LED RED THERMOSTAT SUBBASE SYSTEM COMPONENTS T G R Z X W1 FAN RELAY EM HT OFF SYSTEM SWITCH AUTO ON FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M2978 COMPRESSOR CONTA...

Page 194: ...UTDOOR THERMOSTAT SEQ 2 K SEQ 1 HEAT CHANGEOVER VALVE H2 ANTICIPATOR RISE H2 H1 C1 RISE 4 5 C1 ANTICIPATOR 12 H1 ANTICIPATOR RESET THERMOSTAT SUBBASE SYSTEM COMPONENTS C815A OUTDOOR THERMISTOR OUTDOOR THERMOSTAT H1 FALL W1 W2 T RC RH O FAN RELAY B HEAT RELAY 1 AUTO OFF SYSTEM SWITCH H1 ANTICIPATOR C1 ANTICIPATOR NO FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUI...

Page 195: ...NTACTOR L1 HOT L2 1 G FAN RELAY W2 HEAT CHANGEOVER VALVE A COMPRESSOR FAULT 3 H1 FALL W1 G W2 B HEAT RELAY 1 HEAT OFF COOL SYSTEM SWITCH H1 ANTICIPATOR C1 ANTICIPATOR AUTO ON FAN SWITCH 1 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED LED IS NOT LABELED JUMPER W2 TO X FOR AUXILIARY HEAT INDICATION JUMPER E TO X FOR EMERGENCY HEAT INDICATION CONNECT SYSTEM MONITOR TO X ...

Page 196: ...ON SOME MODELS M2983 THERMOSTAT SUBBASE SYSTEM COMPONENTS 4 6 8 9 10 RISE RISE CO C1 2 LED RED Y1 C FAN RELAY COMPRESSOR CONTACTOR L1 HOT L2 1 3 X2 LED RED 2 2 COOL CHANGEOVER VALVE H1 FALL Y G R E L W2 FAN RELAY COMPRESSOR CONTACTOR OFF ON SYSTEM SWITCH H1 ANTICIPATOR C1 ANTICIPATOR AUTO ON FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M2984 THERMOSTAT SUB...

Page 197: ...ERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE O D T 4 6 8 9 10 H2 FALL RISE CO L1 HOT L2 1 H2 ANTICIPATOR SUPL HT LED RED O H C R 1 H C R 1 H C R 2 H C R 2 H C R 3 C 2 3 5 11 12 C1 CO SUPL HT RISE HEAT H1 FALL W1 W2 HEAT RELAY 1 H1 ANTICIPATOR C1 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED RC RH REMOVABLE JUMPER WHEN SPECIFIED M2986 THERMOSTAT...

Page 198: ...ICIPATOR RISE H2 H1 C1 FALL 4 H1 C1 ANTICIPATOR G W2 B R EM HT RELAY COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR B RELAY EM HT RELAY L1 HOT L2 1 X E FAN RELAY AUX HT RELAY O M2987 H1 FALL G B HEAT OFF COOL SYSTEM SWITCH H1 ANTICIPATOR C1 ANTICIPATOR AUTO ON FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M2988 THERMOSTAT SUBBASE SYSTEM COMPONENTS R COMPRESSOR ...

Page 199: ... SUBBASE SYSTEM COMPONENTS W1 COMPRESSOR FAULT AUX HT RELAY 3 4 6 8 10 H2 FALL RISE C1 L1 HOT L2 1 H2 ANTICIPATOR 2 EM HT LED RED Y1 AUX HT LED GREEN COOL HEAT COMPRESSOR CONTACTOR H1 FALL W1 W2 HEAT RELAY 1 H1 ANTICIPATOR C1 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED RC RH REMOVABLE JUMPER WHEN SPECIFIED M2990 THERMOSTAT SUBBASE SYSTEM COMPONENTS COMPR...

Page 200: ...ANTICIPATOR C1 ANTICIPATOR AUTO OFF FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M2991 THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE 4 1 8 9 10 H2 FALL RISE CO L1 HOT L2 1 H2 ANTICIPATOR CHECK LED RED C 2 3 5 LO MED COMPRESSOR CONTACTOR S1 RELAY S1 RELAY N C H2 AUX HT RELAY R1 RELAY N C 1 R1 RELAY K1 RELAY G1 K2 RELAY G2 R2 RELAY N O 1 7 O FIE...

Page 201: ... SYSTEM SWITCH COOL OFF FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M2992 THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE 4 1 L1 HOT L2 1 CHECK LED RED O 2 3 5 LO MED AUX HT RELAY R1 RELAY K1 RELAY G1 K2 RELAY G2 R2 RELAY N O 1 HEAT C Y COMPRESSOR CONTACTOR H1 FALL H1 ANTICIPATOR C1 ANTICIPATOR C1 RISE S1 RELAY N C 11 12 ...

Page 202: ...PATOR C1 ANTICIPATOR COOL OFF FAN SWITCH 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M2993 THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE 4 1 8 9 10 H2 FALL RISE C1 L1 HOT L2 1 H2 ANTICIPATOR CHECK LED RED C 2 3 5 LO MED COMPRESSOR CONTACTOR S1 RELAY S1 RELAY N C H2 AUX HT RELAY R1 RELAY N C 1 R1 RELAY K1 RELAY G1 K2 RELAY G2 R2 RELAY N O 1 7 O FIELD REM...

Page 203: ...ATOR SYSTEM SWITCH FAN SWITCH AUTO ON OFF EM HT AUTO EM HT RELAY COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR M1629 1 2 4 6 8 9 10 Y C X E W1 R G O AUX HT LED YELLOW CHECK LED RED SYSTEM LED GREEN 4R HPS 4R 5R 4R 4R SEQ 1 SEQ 2 3R FAN RELAY M5900 L1 HOT L2 1 Y L X W2 W3 R ODT EHR HEAT CHANGEOVER VALVE EHR COMPRESSOR CONTACTOR OPTIONAL COMPRESSOR FAILURE CHECK LED GREEN FAN SWITCH ON AUTO SYSTEM SWIT...

Page 204: ...Y B RELAY G COOL CHANGEOVER VALVE EM HT RELAY COMPRESSOR CONTACTOR O Y E B SYSTEM SWITCH EM HT HEAT OFF COOL H1 C1 ANTICIPATOR C1 H1 FALL H2 W3 AUX HT RELAY H2 ANTICIPATOR 1 2 3 2 3 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED TERMINAL LABELED C X ON SOME MODELS W3 TERMINAL AVAILABLE ON SOME MODELS ONLY M3683A AUTO ON FAN SWITCH FALL R 2 3 4 6 THERMOSTAT SUBBASE SYSTEM...

Page 205: ... SYSTEM SWITCH AUTO C1 FALL H1 FALL 2 4 8 H1 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED MOMENTARY POSITION SPRING RETURN TO ON UPON SWITCH RELEASE H2 OFFSET 12o F FROM H1 THERMOSTAT SUBBASE SYSTEM COMPONENTS ON COMPRESSOR CONTACTOR 1 H2 RISE 10 MONENTARY CIRCUIT H2 ANTICIPATOR HEAT RELAY 1 HEAT RELAY 2 1 6 2 2 9 CONTROL MODULE A W2 W1 O G Y1 R W3 Y2 5 7...

Page 206: ...ICIPATOR H2 ANTICIPATOR C1 C2 RISE RISE FALL POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED MOMENTARY POSITION SPRING RETURN TO ON UPON SWITCH RELEASE 1 CONTROL MODULE H2 W3 Y1 G R W2 Y2 O 2 HEAT RELAY 1 W1 A MOMENTARY CIRCUIT 7 2 2 5 FALL H3 SYSTEM MONITOR M5902 L1 HOT L2 1 Y2 X R COOL CHANGEOVER VALVE FAN SWITCH ON AUTO SYSTEM SWITCH OFF AUTO H1 FALL 2 4 H1 ANTICIPATOR...

Page 207: ... AS REQUIRED SUBBASE SYSTEM COMPONENTS Y2 Y1 OFF COMPRESSOR CONTACTOR 1 C2 RISE 9 10 11 C2 ANTICIPATOR C1 ANTICIPATOR L G HIGH SPEED LED YELLOW SYSTEM MONITOR THERMOSTAT M5923 L1 HOT L2 1 C E R FAN RELAY COMPRESSOR CONTACTOR 2 EM HT RELAY MALFUNCTION LED RED LOW SPEED LED GREEN SYSTEM SWITCH HEAT AUTO COOL C2 RISE H1 FALL 2 3 4 8 H1 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD ...

Page 208: ...COMPONENTS 1 4 6 8 9 10 11 FAN SWITCH SYSTEM SWITCH AUTO ON OFF HEAT AUTO COOL SERVICE LED RED COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR 2 HEAT RELAY 2 FAN RELAY COMPRESSOR CONTACTOR 1 HEAT CHANGEOVER VALVE HEAT RELAY 1 H1 ANTICIPATOR H2 ANTICIPATOR C1 C2 RISE RISE FALL POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 CONTROL MODULE H2 B W1 Y1 G RC W2 RH A Y2 O SYSTEM M...

Page 209: ... 1 4 6 8 9 10 11 FAN SWITCH SYSTEM SWITCH AUTO ON OFF AUTO SERVICE LED RED COOL DAMPER COMPRESSOR CONTACTOR 2 HEAT RELAY 2 FAN RELAY COMPRESSOR CONTACTOR 1 HEAT DAMPER HEAT RELAY 1 H1 ANTICIPATOR H2 ANTICIPATOR C1 C2 RISE RISE FALL CONTROL MODULE H2 B W1 Y1 G RC W2 A Y2 O RH L1 HOT L2 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 SYSTEM MONTIOR L1 HOT L2 1 ...

Page 210: ...PONENTS 1 4 6 8 9 10 11 SYSTEM SWITCH OFF AUTO SERVICE LED RED FAN RELAY O COMPRESSOR CONTACTOR 2 HEAT RELAY 2 T RELAY COMPRESSOR CONTACTOR 1 FAN RELAY B HEAT RELAY 1 H1 ANTICIPATOR H2 ANTICIPATOR C1 C2 RISE RISE FALL POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 CONTROL MODULE H2 B W1 Y1 T RC W2 RH A1 Y2 O 5 7 12 A2 SERVICE LED RED NO FAN SWITCH SYSTEM MONITOR SYSTEM...

Page 211: ... AS REQUIRED W1 Y1 JUMPER IS Y TERMINAL REMOVE JUMPER WHEN W1 RELAY IS USED THERMOSTAT SUBBASE SYSTEM COMPONENTS M1230B 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 HT RELAY EM HT RELAY COMPRESSOR FAULT CHECK LED RED AUX HT LED GREEN EM HT LED RED SYSTEM SWITCH OFF EM HT HEAT AUTO COOL COOL CHANGEOVER RELAY HEAT CHANGEOVER RELAY W1 RELAY COMPRESSOR CONTACTOR C1 ANTICI...

Page 212: ...ON AS REQUIRED REMOVABLE JUMPER INSTALLED THERMOSTAT SUBBASE SYSTEM COMPONENTS H2 FALL H1 C1 ANTICIPATOR H2 ANTICIPATOR RESET EM HT HEAT OFF COOL AUX HT LED GREEN EM HT LED YELLOW C815A OUTDOOR THERMISTOR COOL CHANGEOVER VALVE ELECTRIC HEAT RELAY ELECTRIC HEAT RELAY EM HT O D S SERVICE EM HT RELAY FAN RELAY COMP RELAY O L IN STAT HI PRO AUTO ON M3259 1 2 3 4 5 6 11 12 O T C E W1 L G Y1 R SENSOR LE...

Page 213: ...O COOL ELECTRIC HT RELAY ELECTRIC HT RELAY M3264 1 2 3 4 5 6 8 9 10 11 O T C E W1 L G Y1 R EM HT RELAY EM HT EM HT LED YELLOW RESET COMP RELAY O L IN STAT HI PRO FAN RELAY SERVICE C815A OUTDOOR THERMISTOR COOL CHANGEOVER VALVE AUX HT LED GREEN SERVICE LED RED H2 FALL H1 FALL C L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONEN...

Page 214: ...HT HEAT AUTO COOL FAN RELAY EM HT RELAY AUX HT RELAY COOL CHANGEOVER VALVE HEAT CHANGEOVER VALVE COMPRESSOR FAULT H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR M5152 COMPRESSOR RELAY W3 RELAY AUX HT LED GREEN O L EM HT LED RED G R E X W2 B W3 Y 12 11 10 9 5 4 3 2 8 L1 HOT L2 1 SYSTEM SWITCH OFF H1 ANTICIPATOR H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M3957 ...

Page 215: ... SPEED EM HT OFF EM HT W89 HEAT PUMP CONTROL PANEL COOL CHANGEOVER H2 ANTICIPATOR H3 ANTICIPATOR SERVICE LIGHT EM HT LIGHT T OUTDOOR RESET 8 9 11 10 12 FALL C2 ANTICIPATOR C1 ANTICIPATOR RISE H2 C1 C2 RESET THERMOSTAT SUBBASE SYSTEM COMPONENTS RISE L2 1 OFF H1 ANTICIPATOR H1 FALL 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M3961 CO Y1 H2 RISE W1 C1 ANTICIPATOR C1 RI...

Page 216: ... CHANGEOVER RISE C1 RISE C1 ANTICIPATOR OFF COOL AUTO HEAT EM HT SYSTEM SWITCH AUTO ON FAN SWITCH AUX HT LED GRN EM HT LED RED POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 1 M7064 THERMOSTAT SUBBASE SYSTEM COMPONENTS Y1 RC 1 1 1 M7570 THERMOSTAT SUBBASE SYSTEM COMPONENTS B Y2 W2 RH A H1 ANTICIPATOR H2 ANTICIPATOR C1 RISE H1 FALL FALL H2 C2 RISE POWER SUPPLY PROVIDE DIS...

Page 217: ...AT SUBBASE SYSTEM COMPONENTS 3 4 6 8 10 FALL RISE C1 L1 HOT L2 1 2 1 Y COMPRESSOR CONTACTOR W1 W2 HEAT 1 HEAT 2 HEAT 5 LOW LED YELLOW HI LED GREEN H1 FALL L1 HOT L2 1 1 2 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FACTORY INSTALLED JUMPER BETWEEN TERMINALS W1 AND Y1 H1 ANTICIPATOR FAN SWITCH AUTO ON SYSTEM SWITCH OFF COOL 2 4 6 X O C W1 W2 B R G Y1 COOL CHANGEOVER ...

Page 218: ... COMPONENTS EM HT H1 H2 FALL FALL C1 H1 ANTICIPATOR RESET U F FAN RELAY AUX HT RELAY OUTDOOR THERMOSTAT COOL CHANGEOVER VALVE COMPRESSOR CONTACTOR OUTDOOR SENSOR COMPRESSOR MONITOR 1 4 6 AUX HT LED GREEN EM HT LED RED FIELD REMOVABLE JUMPER L1 HOT L2 1 1 2 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FAN CONTINUOUS IN ON POSITION SYSTEM OFF ON FAN MED MED HI HI 8 10 ...

Page 219: ...VALVE NO 3 M7742 THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE SUPL HT CO H1 H2 FALL FALL CO C1 RISE COMPRESSOR CONTACTOR P RELAY X RELAY O D T SUPL HEAT LED RED H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR L1 HOT L2 1 H2 ANTICIPATOR H1 ANTICIPATOR C1 ANTICIPATOR FALL H1 R W2 W1 G B 1 2 2 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED OVERRIDE IS MOMENTARY P...

Page 220: ...ELAY EM HT RELAY B RELAY M7715 THERMOSTAT SUBBASE SYSTEM COMPONENTS 11 12 COMPRESSOR CONTACTOR EM HT EM HT LED RED AUX HEAT LED GREEN COOL CHANGEOVER VALVE H2 FALL H2 ANTICIPATOR RISE L1 HOT L2 1 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FAN SWITCH AUTO ON SYSTEM SWITCH ON OFF 2 3 4 5 6 8 9 10 11 12 R X E L C G W2 Y P O FAN RELAY HEAT CHANGEOVER VALVE NO 1 HEAT CH...

Page 221: ... SWITCH AUTO ON SYSTEM SWITCH HEAT OFF COOL 2 3 4 6 O W2 X E L B R G Y AUX HT RELAY FAN RELAY EM HT RELAY B RELAY M7718 THERMOSTAT SUBBASE SYSTEM COMPONENTS COMPRESSOR CONTACTOR EM HT EM HT LED RED AUX HT LED GREEN COOL CHANGEOVER VALVE H2 C1 FALL H2 ANTICIPATOR W2 W1 HEAT RELAY 1 OFF AUTO SYSTEM SWITCH 1 M7717 THERMOSTAT SUBBASE SYSTEM COMPONENTS L1 HOT L2 1 Y2 HEAT RELAY 2 RH RC Y1 COOL CHANGEOV...

Page 222: ...SOR CONTACTOR 2 EM HT AUTO ON FAN SWITCH H1 ANTICIPATOR H2 ANTICIPATOR H3 ANTICIPATOR RESET FALL FALL FALL H1 H3 H2 AUX HEAT LED GREEN POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED CONNECT CHANGEOVER RELAY TO O TERMINAL FOR CHANGEOVER IN COOLING OR TO B TERMINAL FOR CHANGEOVER IN HEATING M6999 C1 ANTICIPATOR RISE RISE C2 ANTICIPATOR C1 C2 EM HEAT LED RED CHECK LED YELLO...

Page 223: ... RED LOW SPEED LED GREEN SYSTEM SWITCH HEAT AUTO COOL C2 RISE H1 FALL 2 3 4 8 H1 ANTICIPATOR 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED THERMOSTAT SUBBASE SYSTEM COMPONENTS Y2 Y1 OFF COMPRESSOR CONTACTOR 1 CO RISE 9 10 11 C2 ANTICIPATOR C1 ANTICIPATOR L G HIGH SPEED LED YELLOW 5 O COOL CHANGEOVER VALVE AUX HT RELAY W2 AUX HT LED RED 7 RISE C1 EM HT FAN SWITCH ON AU...

Page 224: ...49 Schematic and hookup of T874C with Q674B Used in heat pump applications C2 RISE L1 HOT L2 1 C1 RISE H2 FALL H1 FALL M18622 H1 ANTICIPATOR H2 ANTICIPATOR C1 ANTICIPATOR C2 ANTICIPATOR POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FIELD WIRE JUMPER TO ALLOW SINGLE SYSTEM TRANSFORMER 1 2 1 3 4 6 8 9 10 11 Y2 Y1 O RH B W2 RC G W1 2 SYSTEM SWITCH HEAT OFF COOL ON AUTO FAN...

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