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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—8 32
C1509 Fedders logo; used with Q672L1102 Y594R1425 Wiring differences (old=new): C=X,
K=E; remove Y-W1 jumper.
C1517 Climatrol logo; used with Q672L1102 Y594R1425 Wiring differences (old=new): C=X,
K=E; remove Y-W1 jumper.
C1525 Square D logo; no. HCD-2 T874C1018
C1533 Airtemp logo T874C1018
C1541 Airtemp logo; used with Q672L1102 Y594R1425 Wiring differences (old=new): C=X,
K=E; remove Y-W1 jumper.
C1566 TRADELINE; Celsius scale T874C1018 Replacement has °F scaleplate.
C1574 Whalen special; used with Q672B1269 None
C1582 Lennox; meets DoD None
C1590 Singer; 8°F (4.4°C) differential between stage
1 and stage 2
T874C1125 Replacement has 2°F (1° C)
differential between H1 and H2.
C1608 Singer logo; no. 02005784 8°F (4.4°C) differential
between stage 1 and stage 2
T874C1125 Replacement has 2°F (1°C)
differential between H1 and H2.
C1616 Celsius scale; stop set at 23°C None Add 4074ECK adjustable stop.
C1624 Heat Wave logo; no. 0360-116 T874C1018
C1632 York logo; heat anticipator set at 0.2A T874C1018
C1640 Heat 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
replacement information.
C1707 Sigler logo; used with Q672N1027 None
C1715 Westinghouse logo T874C1018
T872D 2-stage heat, 2-stage cool
D1003 Standard OEM T874D1165
D1011 TRADELINE T874D1165
D1029 Westinghouse logo T874D1165
D1037 Climatrol logo T874D1165
D1045 Lennox logo; no. P-8-8897; used with Q672E1191. T874D1165
D1052 York logo T874D1165
D1060 Singer logo; no. 02005385 T874D1165
D1078 Rheem logo T874D1165
D1086 Rudd logo T874D1165
D1094 York logo; locking cover T874D1165
D1102 American Standard logo T874D1165
D1110 ITT logo T874D1165
D1128 Carrier logo T874D1165
D1136 No anticipator on stage 1 cool; used with
Q672C1029
T874D1165
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.