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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—858
G1014 86, 150 Obsolete. Lennox lo
g
o; part no. 24F5801; °F/°C
scaleplate; H2 anticipator factor
y
set at 0.25A for fast
c
y
cle performance; chan
g
eover in coolin
g
mode;
independent heatin
g
and coolin
g
circuits; used with
Q674E1148, F1113.
Y594G1252
a
Wirin
g
differences
(
old=new
)
:
R=O, M=Y, F=G, Y=W2,
V-VR=R
(
must use sin
g
le
transformer
)
.
G1022 86, 150 Obsolete
. Lennox lo
g
o; part no. 24F5701; °F/°C
scaleplate; H2 anticipator factor
y
set at 0.25A for fast
c
y
cle performance; chan
g
eover in coolin
g
mode;
independent heatin
g
and coolin
g
circuits; used with
Q674E1148, F1113.
Y594G1252
a
Wirin
g
differences
(
old=new
)
:
R=O, M=Y, F=G, Y=W2,
V-VR=R
(
must use sin
g
le
transformer
)
.
G1048 153,
159
Obsolete
. Westin
g
house lo
g
o; H2 anticipator factor
y
set
at 1.2A; used with Q674F1121, J1019.
Y594G1252
a
Wirin
g
differences when
replacin
g
T874G/Q674J1019
(
old=new
)
: W=W2.
G1055 161 Carrier Heat Pump S
y
stem Control lo
g
o; part no.
HH07AT171; H2 anticipator factor
y
set at 0.8A;
chan
g
eover in coolin
g
mode; used with Q674J1035
(
HH93AZ173
)
.
None See subbase description for
replacement information.
G1071 50, 103,
126,
183
Obsolete
. Carrier Heat Pump S
y
stem Control lo
g
o;
meets DoD specifications; H2 anticipator factor
y
set at
0.8A; used with Q674P1005
(
HH93AZ169
)
, L1041
(
HH93AZ175
)
, B1158, or J1050.
Y594G1419 Wirin
g
differences
(
old=new
)
:
C=X;
j
umper Y1-W1.
G1089 154 Obsolete
. Marvair lo
g
o; special for Crispaire; H2
anticipator factor
y
set at 1.2A; used with Q674F1204;
used in Y594G1153.
Y594G1393
a
Wirin
g
differences
(
old=new
)
:
A=L.
G1097 155 Obsolete
. Hone
y
well lo
g
o; Rheem part no. ZXMT-B79;
used with Q674F1238
(
41-20797-14
)
.
Y594G1252
a
G1105 153 Obsolete. Heat Wave
(
Southwest Mf
g
.
)
lo
g
o; H2
anticipator factor
y
set at 1.2A; used with Q674F1170.
Y594G1252
a
G1113 103 Obsolete. Carrier Heat Pump S
y
stem Control lo
g
o;
meets DoD specifications; H2 anticipator factor
y
set at
0.8A; used with Q674L1041.
Y594G1419
a
Wirin
g
differences
(
old=new
)
:
C=X;
j
umper Y1 -W1.
G1121 103 Obsolete
. Carrier Heat Pump S
y
stem Control lo
g
o; part
no. HH07AT161; °C scaleplate; H2 anticipator factor
y
set at 0.8A; includes Allen wrench and screws to lock
cover.
Y594G1419
a
Wirin
g
differences
(
old=new
)
:
C=X;
j
umper Y1-W1.
G1139 143,
234
Obsolete
. Hone
y
well lo
g
o; used with Q674B1240,
C1108.
None See subbase description for
replacement information.
G1147 148 Obsolete
. Hone
y
well lo
g
o; chan
g
eover in coolin
g
mode;
used with Q674F1139.
Y594G1252
a
Wirin
g
differences
(
old=new
)
:
C=X.
G1154 84, 139 Obsolete
. Lennox lo
g
o; used with Q674E1015, F1105.
Y594G1252
a
See subbase description for
replacement information.
G1162 155 Obsolete
. Lennox lo
g
o; meets DoD specifications; used
with Q674F.
Y594G1419
a
W1-Y1
j
umper re
q
uired.
G1170 160 Obsolete
. York lo
g
o; part no. 2TH11702424A; H2
anticipator is fixed; used with Q674J1027; used in
Y594G1013.
Y594G1567
a
G1188 147 Obsolete. Hone
y
well lo
g
o; Keeprite/Westin
g
house
special; H2 anticipator factor
y
set 1.2A; °C scaleplate;
chan
g
eover in coolin
g
mode; used with Q674F1295.
Y594G1252
a
Wirin
g
differences
(
old=new
)
:
S=L.
G1196 160 Obsolete
. York lo
g
o; °C scaleplate; chan
g
eover in
coolin
g
mode; used with Q674J1027; used in
Y594G1138.
Y594G1567
a
Table 8. T874 Cross Reference.
Model
Number
Fig.
No. Description
Trade Model
Replacement Remarks
a
Both the thermostat and subbase must be replaced.