Honeywell T874 - Page 88

T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—8 88
C1348 70 Obsolete. Fiberglas; contains T874C1653,
Q674S1000.
T874C1000/
Q674B1075
Wiring differences (old=new):
Y=Y1; jumper RC-RH and Y1-
W1; replacement has no
SERVICE LED; replacement
has fan switching and HEAT-
OFF-COOL system switching.
C1355 45 Obsolete
. Nordyne “Miller” part no. 9122250;
contains T874C1695, Q674B1000.
T874C1018/
Q674B1034
C1363 45 Obsolete
. Nordyne “Intertherm” part no. 911100001;
contains T874C1703, Q674B1000.
T874C1018/
Q674B1075
Wiring differences (old=new):
Y=Y1; jumper RC-RH; Y1-W;
replacement has no SERVICE
LED.
C1371 184 Obsolete
. California Economizer; contains
T874C1802 and Q674G1005.
T874C1018/
Q674G1070
C1389 237 Obsolete
. TRADELINE; Premier White® color;
contains T874C1810 and Q674B1547.
Y594C1389
C1413 238 Heat Controller “
Energy Night” logo; contains
T874C1844 and Q674F1592.
Y594R1425 E-W2 jumper required; system:
EM.HT.-Heat-Off-Cool.
C1421 249 Obsolete
. TRADELINE; contains T874C1877 and
Q674B1554.
Y594D1347 Replacement has auto
changeover; jumper RH-RC.
C1439 T874C1869 and Q674C1579. None
Y594D
D1016 44 Obsolete
. Trane part no. 268-0201-2; contains
T874D1082, Q674B1018.
T874D1165/
Q674B1018
D1024 72 Trane part no. BAYSTAT010; contains 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/
Q674B1075
D1156 48 Obsolete
. Trane part no. BAYSTAT013; contains
T874D1082, Q674B1133.
T874D1165/
Q674B1018
Replacement has no FILTER
LED.
D1180 82 York part no. 025-23321-000; contains T874D1504,
Q674E1007.
T874D1165/
Q674E1049
D1222 166 Obsolete
. WeatherKing; contains T874D1009,
Q674F1337.
T874D1165/
Q674F1022
Wiring differences (old=new):
R=RH; jumper RC-RH;
replacement has no EM.HT. or
AUX. HT. LEDs.
D1248 82 Obsolete
. Reznor part no. 93437; contains
T874D1629, Q674E1007.
T874D1165/
Q674E1049
D1297 82 Obsolete
. ArcoAire part no. 1506753; contains
T874D1769, Q674E1346.
T874D1165/
Q674E1049
D1305 82 Obsolete
. Comfortmaker part no. 1505753; contains
T874D1785, Q674E1346.
T874D1165/
Q674E1049
D1321 45 Obsolete
. Goodman part no. CHT 90-120; contains
T874D1843, Q674B1000.
T874D1165/
Q674B1034
D1339 82 Obsolete
. Nordyne part no. 5471180; contains
T874D1009, Q674E1007.
T874D1165/
Q674E1049
Table 10. Y594 Cross Reference.
Model
Number
Fig.
No. Description
Trade Model
Replacement
a
Remarks
a
Both the thermostat and subbase must be replaced.