Honeywell T874 Product Data page 58

T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
Model Fig.
Number No.
G1014 86, 150 Obsolete. Lennox logo; part no. 24F5801; °F/°C
scaleplate; H2 anticipator factory set at 0.25A for fast
cycle performance; changeover in cooling mode;
independent heating and cooling circuits; used with
Q674E1148, F1113.
G1022 86, 150 Obsolete. Lennox logo; part no. 24F5701; °F/°C
scaleplate; H2 anticipator factory set at 0.25A for fast
cycle performance; changeover in cooling mode;
independent heating and cooling circuits; used with
Q674E1148, F1113.
G1048 153, Obsolete. Westinghouse logo; H2 anticipator factory set
159 at 1.2A; used with Q674F1121, J1019.
G1055 161 Carrier Heat Pump System Control logo; part no.
HH07AT171; H2 anticipator factory set at 0.8A;
changeover in cooling mode; used with Q674J1035
(HH93AZ173).
G1071 50, 103, Obsolete. Carrier Heat Pump System Control logo;
126, meets DoD specifications; H2 anticipator factory set at
183 0.8A; used with Q674P1005 (HH93AZ169), L1041
(HH93AZ175), B1158, or J1050.
G1089 154 Obsolete. Marvair logo; special for Crispaire; H2
anticipator factory set at 1.2A; used with Q674F1204;
used in Y594G1153.
G1097 155 Obsolete. Honeywell logo; Rheem part no. ZXMT-B79;
used with Q674F1238 (41-20797-14).
G1105 153 Obsolete. Heat Wave (Southwest Mfg.) logo; H2
anticipator factory set at 1.2A; used with Q674F1170.
G1113 103 Obsolete. Carrier Heat Pump System Control logo;
meets DoD specifications; H2 anticipator factory set at
0.8A; used with Q674L1041.
G1121 103 Obsolete. Carrier Heat Pump System Control logo; part
no. HH07AT161; °C scaleplate; H2 anticipator factory
set at 0.8A; includes Allen wrench and screws to lock
cover.
G1139 143, Obsolete. Honeywell logo; used with Q674B1240,
234 C1108.
G1147 148 Obsolete. Honeywell logo; changeover in cooling mode;
used with Q674F1139.
G1154 84, 139 Obsolete. Lennox logo; used with Q674E1015, F1105.
G1162 155 Obsolete. Lennox logo; meets DoD specifications; used
with Q674F.
G1170 160 Obsolete. York logo; part no. 2TH11702424A; H2
anticipator is fixed; used with Q674J1027; used in
Y594G1013.
G1188 147 Obsolete. Honeywell logo; Keeprite/Westinghouse
special; H2 anticipator factory set 1.2A; °C scaleplate;
changeover in cooling mode; used with Q674F1295.
G1196 160 Obsolete. York logo; °C scaleplate; changeover in
cooling mode; used with Q674J1027; used in
Y594G1138.
a
Both the thermostat and subbase must be replaced.
60-2485—8
Table 8. T874 Cross Reference.
Description
58
Trade Model
Replacement
Wiring differences (old=new):
Y594G1252 a
R=O, M=Y, F=G, Y=W2,
V-VR=R (must use single
transformer).
Wiring differences (old=new):
Y594G1252
a
R=O, M=Y, F=G, Y=W2,
V-VR=R (must use single
transformer).
Y594G1252 Wiring differences when
a
replacing T874G/Q674J1019
(old=new): W=W2.
None See subbase description for
replacement information.
Y594G1419 Wiring differences (old=new):
C=X; jumper Y1-W1.
Wiring differences (old=new):
Y594G1393
a
A=L.
Y594G1252
a
Y594G1252 a
Wiring differences (old=new):
Y594G1419 a
C=X; jumper Y1 -W1.
Wiring differences (old=new):
Y594G1419 a
C=X; jumper Y1-W1.
None See subbase description for
replacement information.
Wiring differences (old=new):
Y594G1252
a
C=X.
See subbase description for
Y594G1252 a
replacement information.
W1-Y1 jumper required.
Y594G1419
a
Y594G1567 a
Wiring differences (old=new):
Y594G1252
a
S=L.
Y594G1567 a
Remarks