T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
51 60-2485—8
C1489 121 Obsolete. Hone
y
well lo
g
o; non-ad
j
ustable ran
g
e stops
set at 75°F
(
max. heat and min. cool
)
(
24°C
)
; used with
Q674L1157.
Y594C1322a
C1497 121 Obsolete. Hone
y
well lo
g
o; meets DoD specifications;
used with Q674L1157. Y594C1322a
C1513 44 Obsolete. Bor
g
-Warner multi-lo
g
o; part no.
6TH11703124A. T874C1018
C1562 44 Obsolete. Hone
y
well lo
g
o; Heil Quaker part no.
HQ712001HW. T874C1018
C1570 45 Obsolete. Williamson lo
g
o; used with Q674B1000; used
in Y594C1280. T874C1018
C1638 121 Obsolete. Hone
y
well lo
g
o; meets DoD specifications;
includes Allen wrench and screws to lock cover; no
thermometer; non-ad
j
ustable ran
g
e stops set at 72°F
(
max. heat
)
and 78°F
(
min. cool
)
(
22-26°C
)
; field
ad
j
ustable lockin
g
levers; used with Q674L1561; used in
Y594C1322.
Y594C1322a
C1653 70 Obsolete. Fiber
g
las Canada; °C scaleplate; no H1, H2,
or C1 anticipation; used with Q674S1000; used in
Y594C1348.
See OEM for
replacement.
C1661 99 Obsolete. McQua
y
lo
g
o; part no. 61202401; °F/°C
scaleplate; includes momentar
y
s
y
stem switch position
with sprin
g
release; used with Q674C1363.
T874C1125/
Q674B1075a
Replacement has HEAT-OFF-
COOL s
y
stem switchin
g
; no
momentar
y
s
y
stem switch
position; no LEDs.
C1695 45 Obsolete. Miller lo
g
o; used with Q674B1000; used in
Y594C1355. T874C1018
C1703 45 Obsolete. Intertherm lo
g
o; used with Q674B1000; used
in Y594C1363. T874C1018
C1737 44 Obsolete. Hone
y
well lo
g
o; Carrier part no. HH621603. T874C1018
C1745 44 Obsolete. AAF/Sn
y
der General lo
g
o; part no.
4ELN7919. T874C1018
C1752 219 Obsolete. McQua
y
/Sn
y
der General lo
g
o; part no.
061202402; 12°F offset between H1 and H2; °F/°C
scaleplate; no C1 anticipation; used with Q674C1363.
T8611M2025
C1760 44 Bard lo
g
o. T874C1018
C1778 219 Obsolete. AAF/Sn
y
der General lo
g
o; part no.
066804405; 12°F offset between H1 and H2; °F/°C
scaleplate; no C1 anticipation; used with Q674C1363.
See OEM for
replacement.
C1794 53 Obsolete. Carrier lo
g
o; Canada; part no. HH07AT160-W;
Premier White® color; °C scaleplate; includes lockin
g
cover.
T874C1018 Set sta
g
e 1 heat anticipator for
total current draw of fan and
sta
g
e 1 heat primar
y
.
C1802 246 Obsolete. California Economizer lo
g
o; °F/°C scaleplate;
used with Q674G1005; used in Y594C1371. T874C1018
C1810 237 Obsolete. Hone
y
well lo
g
o; TRADELINE model; Premier
White® color; used with Q674B1547; used in
Y594C1389.
Y594C1389
C1844 238 Ener
gy
Ni
g
ht lo
g
o; used with Q674F1592; used in
Y594C1413. Y594R1425 Jumper E-W2; s
y
stem switch:
EM.HT.-HEAT-OFF-COOL.
C1851 60 Obsolete. Whalen lo
g
o. T874C1018
C1869 219 McQua
y
lo
g
o; part no. 0073318801 Premier White®
color; °F/°C scaleplate. See OEM for
replacement.
Table 8. T874 Cross Reference.
Model
Number Fig.
No. Description Trade Model
Replacement Remarks
aBoth the thermostat and subbase must be replaced.