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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—8 30
A1279 General Electric logo; no. AY28X114A; 75°F stop;
locking cover; no thermometer.
T874A1010 Use T874A1176 for Dept. of
Defense (DoD) application.
A1287 General Electric; no. AY28X097A; fan current
shunt for auto fan in heating; heat anticipator set at
0.4A.
T874A1036/
Q674B1018
Set thermostat stage 1 heat
anticipator for total of fan and stage
1 primary control current draw.
A1295 Lennox; Celsius scale T874A1036
A1303 Lennox logo; no. 64A0601; meets DoD specs T874A1176
A1311 Envirotron special; Celsius scale T874A1010
A1329 Carrier logo; Celsius scale; no. HH07AT074C T874A1036
A1337 Square D; no. HCD-3; heat anticipator set at 0.2A T874A1036
A1345 TRADELINE; Celsius scale T874A1010
A1352 Heat anticipator set 1.2A T874A1036
A1360 Friedrich logo; heat anticipator set at 0.2A T874A1036
A1378 Wesco logo; heat anticipator set at 0.8A T874A1036
T872B 1-stage heat, 2-stage cool
B1005 Standard OEM T874B1019
B1013 0.4A heat anticipator setting T874B1019
B1021 TRADELINE T874B1019
B1039 Westinghouse logo T874B1019
B1047 American Standard logo 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 T874B1019
T872C 2-stage heat, 1-stage cool
C1004 Standard OEM T874C1018
C1012 Heat anticipator set at 0.4A T874C1018
C1020 72-78°F (22-26°C) stop; locking cover; no
thermometer; 42-88°F (6-31°C) setpoint range.
T874C1141 Use T874C1141 for Dept. of
Defense (DoD) application.
C1038 TRADELINE T874C1018
C1046 American Standard logo T874C1018
C1053 Friedrich logo T874C1018
C1061 Lennox logo; no. P-8-8896 T874C1018
C1079 Westinghouse logo; stage 1 heat anticipator set at
0.75A; stage 2 anticipator set at 1.2A
T874C1018
C1087 Fast cycle performance on both heat stages;
anticipator range 0.12-0.6A
T874C1018 Adjust anticipator faster for correct
performance.
C1095 Payne logo; no. 0.1-0.175 T874C1018
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.