Honeywell T874 - Page 95

T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
95 60-2485—8
R1797 125 TRADELINE; contains T874R1988 and
Q674L1868; direct replacement for Y594R1235
(T874R1368/Q674L1421) Evcon/Coleman part no.
3600-368).
Y594R1797
a
R1805 245 Obsolete. Amana part no. 10636702; contains
T874R2002 and Q674L1876.
Y594R1797 Wiring differences (old=new):
C/X=X.
R1813 245 Obsolete
. Amana part no. 10636704; contains
T874R2010 and Q674L1884.
Y594R1797 Wiring differences (old=new):
C/X=X, W3=W2.
R1821 125 Obsolete
. York logo; part no. 2TH11703424A;
contains T874R2028 and Q674L1918.
Y594R1797
R1839 134 Rudd logo; part no. 41-20796-48; contains
T874R2036 and Q674L1504.
See OEM for
replacement.
R1854 123 Obsolete
. 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 night setback.
W1055 247 Obsolete
. Addison logo; part no. 843-277; contains
T874W1106, Q674L1934 and C815A1005.
T8611M2025
Y594Y
Y1004 210 Obsolete. Mammoth part no. 71117301; contains
T874Y1005 and Q674E1353.
See OEM for
replacement.
Y1012 248 Obsolete
. WaterFurnace logo; part no. TA21H03;
contains T874Y1013 and Q674F1675.
Table 10. Y594 Cross Reference.
Model
Number
Fig.
No. Description
Trade Model
Replacement
a
Remarks
a
Both the thermostat and subbase must be replaced.