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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
59 60-2485—8
G1204 162 Hone
y
well lo
g
o; desi
g
ned for use on Trane heat pumps;
no H2 anticipation; chan
g
eover in coolin
g
mode; used
with Q674J1043 and C815A1005; used in Y594G1161.
Y594G1161
a
Desi
g
ned for use on Trane
heat pumps.
G1212 155 Obsolete
. Hone
y
well lo
g
o; H2 anticipator factor
y
set at
0.2A; chan
g
eover in coolin
g
mode; includes shunt to
b
y
pass H2 anticipator with W3 heat rela
y
s; used with
Q674F1238.
Y594G1252
a
G1220 235 Obsolete. Rheem lo
g
o; part no. RXMT-C71; chan
g
eover
in coolin
g
mode; used with Q674F1238.
Y594G1252
a
G1238 155 Obsolete. Ruud lo
g
o; part no. UXMT-C71; chan
g
eover
in coolin
g
mode; used with Q674F1238.
Y594G1252
a
G1246 Obsolete. Hone
y
well lo
g
o; chan
g
eover in coolin
g
mode.
155 Used with Q674F1212; used in Y594G1195, G1252,
G1369.
Y594G1252
a
170 Used with Q674F1410; used in Y594G1393.
Y594G1393
a
G1261 58, 157 Obsolete. Bor
g
-Warner; used with Q674D1032, F1253. None See subbase description for
replacement information.
G1279 58, 157 Obsolete
. Br
y
ant lo
g
o; used with Q674D1032, F1253. None See subbase description for
replacement information.
G1287 58, 157 Obsolete
. Wesco lo
g
o; used with Q674D1032, F1253. None See subbase description for
replacement information.
G1295 58 Obsolete
. York lo
g
o; part no. 2TH11702724A; used with
Q674D1032.
T874D1165/
Q674D1040
Wirin
g
differences
(
old=new
)
:
Y=Y2, O=Y1, W=W2;
j
umper
W1-Y2.
G1345 160 Obsolete
. York lo
g
o; part no. 2TH11702624A; °C
scaleplate; used with Q674J1027.
Y594G1575
a
G1352 73 Obsolete. Command-Aire lo
g
o; 12°F differential
between H1 and H2 for ni
g
ht setback; used with
Q674C1066.
Y594H1012
a
Wirin
g
differences
(
old=new
)
:
Y1=O, Y2=Y, L=R, R=none; R-
L
j
umper re
q
uired; no ni
g
ht
setback.
T8600D1004
(
pro
g
rammable
)
Wirin
g
differences
(
old=new
)
:
Y1=O, Y2=Y, L=RH; RC-RH
j
umper re
q
uired; includes
ni
g
ht setback.
G1378 79 Obsolete. Mammoth lo
g
o; H2 anticipator factor
y
set at
0.8A; 12°F differential between H1 and H2 for ni
g
ht
setback; °F/°C scaleplate; used with Q674C1124; used
in Y594G1294.
Y594H1012
a
Wirin
g
differences
(
old=new
)
:
R1=none, R2=L; R-L
j
umper
re
q
uired; no ni
g
ht setback.
T8090A1007/
Q682A1038
a
(
pro
g
rammable
)
Includes ni
g
ht setback; W-Y
j
umper re
q
uired.
G1402 129 Obsolete. York part no. 2TH11702824A; meets DoD
specifications; used with Q674L1363.
Y594R1425
a
Wirin
g
differences
(
old=new
)
:
W=W2, X=E, B=X;
j
umper
Y-W1.
G1410 155 Obsolete
. Bor
g
-Warner multi-lo
g
o; part
no. 6TH11703024A; used with Q674F1311.
T874G1246
a
or
Y594G1252
a
G1428 160 Obsolete. Bor
g
-Warner multi-lo
g
o; part no.
6TH11702424A; used with Q674J1027; used in
Y594G1229.
Y594G1567
a
G1436 58 Obsolete. Bor
g
-Warner multi-lo
g
o; part no.
6TH11702724A.
T874D1165/
Q674D1040
Wirin
g
differences
(
old=new
)
:
Y=Y2, O=Y1, W=W2;
j
umper
W1-Y2.
Table 8. T874 Cross Reference.
Model
Number
Fig.
No. Description
Trade Model
Replacement Remarks
a
Both the thermostat and subbase must be replaced.