T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
91 60-2485—8
G1617 73 Obsolete. Carrier part no. 50QE90020101; contains
T874G1949 and Q674C1504. Y594H1012aWirin
g
differences
(
old=new
)
:
Y1=O, Y2=Y, L=R, R=none;
R-L
j
umper re
q
uired; no ni
g
ht
setback.
T8600D2028
(
pro
g
rammable
)
Wirin
g
differences
(
old=new
)
:
Y1=O, Y2=Y, L=R; W-Y
j
umper
re
q
uired; ni
g
ht setback.
G1625 160 York Canada part no. 2TH11702524; contains
T874G1964 and Q674J1266. Y594G1567aReplacement has °F
scaleplate.
G1633 169 TRADELINE; contains T874G1972 and
Q674F1584; direct replacement for Y594G1377
(
T874G1576/Q674F1402
)
Evcon/Coleman part no.
3600-373.
Y594G1633a
G1641 169 Obsolete. Amana part no. 10636703; contains
T874G1980 and Q674F1600. Y5 94G1633 Wirin
g
differences
(
old=new
)
:
W3=W2.
G1658 155 Obsolete. Tempstar “Inter-Cit
y
Products” part no.
1149910; contains T874G1998 and Q674F1212. Y594G1252
G1666 103 Obsolete. TRADELINE; manual chan
g
eover;
contains T874G2004 and Q674L1892; direct
replacement for Y507J1011
(
T874G1055/
Q674L1041
)
Carrier part no. 99TZ90041106
(
HH07AT171/HH93AZ1750
)
.
Y594G1674 Replacement has auto
chan
g
eover.
G1674 161 TRADELINE; automatic chan
g
eover; contains
T874G2004 and Q674J1274; direct replacement
Y507J1003
(
T874G1055/Q674J1035
)
Carrier part
no. 99TZ90040106
(
HH07AT171/HH93AZ173
)
.
Y594G1674
G1716 155 WaterFurnace lo
g
o; part no. TA21H03; contains
T874G2046 and Q674F1667. Y5 94G1716
Y594H
H1004 79 Obsolete. LSI part no. 73033901; contains
T874H1039 and Q674C1124. T8600D2028 H2 is ni
g
ht setback.
H1012 164 Contains T874H1062 and Q674C1249; replaces
T874H1005/Q674C1041. Y594H1012
H1020 177 Obsolete. Mammoth part no. 71117101; contains
T874H1096 and Q674C1330. Y594H101 2 Wirin
g
differences
(
old=new
)
:
R1=R, R2=L; use
j
umper
provided.
H1038 74 Obsolete. Carrier part no. 50QE90019101; contains
T874H1161 and Q674C1496. Y594H1012aWirin
g
differences
(
old=new
)
:
X1=O, Y2=Y; L-R
j
umper
re
q
uired.
H1046 172 Obsolete. Carrier part no. 50QE90026101; contains
T874H1153 and Q674B1406. T874A1130/
Q674B1075a
Wirin
g
differences
(
old=new
)
:
Y=Y1; W1-Y1
j
umper re
q
uired;
replacement has no LEDs.
H1053 173 Obsolete. Carrier part no. 50QE90027101; contains
T874H1153 and Q674C1322. Y594H1012aWirin
g
differences
(
old=new
)
:
Z=X.
Y594J
J1001 241 Obsolete. TRADELINE; manual chan
g
eover;
contains T874J1069 and Q674L1900; direct
replacement for T874J1002 or T874A1028 used
with Q674L1074 or Q674L1637
(
HH07AT175 or
HH07AT165 used with HH93AZ186 or
HH93AZ195
)
.
(
Recontrol
)
T8511G1021
Table 10. Y594 Cross Reference.
Model
Number Fig.
No. Description Trade Model
ReplacementaRemarks
aBoth the thermostat and subbase must be repl aced.