Thermostat User Manual

T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—8 94
R1615 230 TRADELINE; contains T874R1822 and
Q674L1710; replaces Y594R1326 (T874R1491/
Q674L1553).
Y594R1615
R1623 134 Obsolete
. Rheem Universal Parts part no. 41-
20796-46; contains T874R1558 and Q674L1504.
Y594R1300
R1631 134 Rheem part no. 41-20796-29; contains T874R1442
and Q674L1504.
Y594R1300
R1649 134 Ruud part no. 41-20796-33; contains T874R1434
and Q674L1504.
Y594R1300
R1656 134 Obsolete
. WeatherKing part no. 41-20796-64;
contains T874R1830 and Q674L1504.
Y594R1300
R1664 120 TRADELINE; contains T874R1871 and
Q674L1736; direct replacement for York
2TH11702224 (Y594R1011 contains T874R1046/
Q674L1272).
Y594R1664
R1672 120 TRADELINE; contains T874R1889, Q674L1736
and C815A1054; direct replacement for York
2TH11702324 (Y594R1151 contains T874R1251/
Q674L1272/C815A1039) and 6TH11702224
(Y594R1193 contains T874R1327/Q674L1272).
Y594R1672
R1680 230 TRADELINE; same as Y594R1615 except Premier
White® color; contains T874R1897 and
Q674L1751; direct replacement for Y594R1326
(T874R1491/Q674L1553).
Y594R1680
R1698 120 Obsolete
. TRADELINE; Premier White® color;
contains T874R1905, Q674L1777 and C815A1054.
Y594R1672 Replacement is beige.
R1706 120 Obsolete
. TRADELINE; same as Y594R1664
except Premier White® color; contains T874R1913
and Q674L1777; direct replacement for Y594R1011
(T874R1046/Q674L1272) York part no.
2TH11702224.
Y594R1664 Replacement is beige.
R1714 228 Obsolete
. Lennox part no. 97E79; Canada; Premier
White® color; contains T874R1855 and
Q674L1728.
Y594R1763 Wiring differences (old=new):
Y1=Y, L=F, W1=W, E=W2,
C=B.
R1722 115 Obsolete
. Econar; contains T874R1921 and
Q674L1207.
Y594R1243
a
R1748 197 American Standard (Trane) part no. ASYSTAT651A;
contains T874R1939 and Q674L1801.
Y594R1763
a
R1755 168 Obsolete. Inter-City Products part no.
HQ1149376HW; contains T874R1947 and
Q674L1819.
Y594R1425
a
R1763 197 TRADELINE: contains T874R1954 and
Q674L1827; direct replacement for Y594R1136
(T874R1053/Q674L1140), Y594R1748
(T874R1939/Q674L1801) Trane part no.
ASYSTAT651A, Y594R1441 (T874R1657/
Q674L1611) Trane part no. ASYSTAT651.
Y594R1763
R1771 115 Obsolete
. Consolidated Industries part no.
9036100; contains T874R1962 and Q674L1843.
Y594R1680
a
Includes CHECK LED.
R1789 120 York Canada part no. 2TH11701524; contains
T874R1970 and Q674L1850.
Y594R1672
a
Replacement has °F
scaleplate.
Table 10. Y594 Cross Reference.
Model
Number
Fig.
No. Description
Trade Model
Replacement
a
Remarks
a
Both the thermostat and subbase must be replaced.