T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—8
38
R1123
York logo; no. 025-21453C; Celsius scale.
Y594R1664
R1131
Lennox logo; separate auxiliary heat power circuit;
fast cycle stage 2 heat anticipator; outdoor reset;
used with Q672L1144, C815A1013.
None
R1149
Westinghouse logo; adjustable stage 2 heat
anticipator; cooling changeover; fixed anticipator
stage 1 heat and cool; used with Q672L1110,
L1128, L1151.
Y594R1243
Wiring differences (old=new):
W=W2.
R1156
Marvair logo; used with Q672L1094, L1250.
Y594R1243
Replacement has auto fan in
Emergency Heat mode.
R1164
Bard; used with Q672L1185.
Y594R1243
R1172
Heil Quaker; used with Q672L1193.
Y594R1243
Wiring differences (old=new): B=X,
W=W2.
R1180
York; Celsius; used with Q672L1011.
Y594R1664
R1198
TRADELINE; used with Q672L1227
Y594R1243
R1206
For use with W89; used with Q672L1235.
None
R1214
Intertherm logo; used with Q672L1276.
Y594R1300
Wiring differences (old=new):
W1=B, Z=L, K=E.
R1222
York logo; used with C815A1039; adjustable
anticipator stage-2 heat; used with Q672L1284
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 heat plus changeover,
1-stage cool.
S1005
Westinghouse logo; adjustable anticipator stage 1
and 2 heat; fixed anticipator stage 1 heat;
changeover with heating: used with Q672C1045
T874C1018/
Q674C1058
Wiring differences (old=new):
V=RC-RH, F=G, C=Y1, Z=B,
H2=W2; W1-Y1 jumper required.
T872T
1-heat stage, 1-vent and 2-cool stages.
T1004
Trane logo; used with Q672B1129.
None
T872W
3-heat stages, 2-cool stages, manual changeover
W1019
Lennox logo; no. 52C7501; used with Q672L1342
and C815A1013.
None
W1027
Westinghouse logo; used with Q672L1268 and
C815A1021.
None
W1035
TRADELINE; used with C815A1043 and
Q672B1251.
Y594W1014
Table 6. T872-T874 Thermostat Cross Reference.
Model Number
Description
T874 Trade
Replacement
a
Remarks
a
When replacing a T872 Thermostat and Q672 Subbase, always replace both the thermostat and the subbase.