T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
35 60-2485—8
G1026 Lennox logo; fast cycle performance; stage 2 heat;
fixed anticipator stage 1 heat and cool;
changeover with cooling; used with Q672E1019,
F1067.
None See subbase description for
replacement information.
G1034 Westinghouse logo; adjustable anticipator stage 2
heat; fixed anticipator stage 1 heat and cool;
changeover with cooling; used with Q672F1091,
F1141, F1257 or Q672J1013, J1062.
Y594G1252 Wiring differences (old=new):
W=W2.
G1042 York logo; fixed anticipator on all stages heat and
cool; changeover with cooling; used with
Q672J1021.
Y594G1567
G1059 TRADELINE; no anticipator stage 2 heat; fixed
anticipator stage 1 heat and cool; changeover with
cooling; used with Q672J1039 outdoor reset.
Y594G1161 Designed for use on General
Electric heat pumps.
G1067 Lennox logo; no. P-8-11222; fast cycle
performance; stage 2 heat; fixed anticipator stage
1 heat and cool; changeover with cooling; used
with Q672E1142, F1083.
See subbase description for
replacement information.
G1075 Carrier logo; adjustable anticipator stage 2 heat;
fixed anticipator stage 1 heat and cool;
changeover with cooling; used with Q672J1054,
L1052.
See subbase description for
replacement information.
G1083 Adjustable anticipator stage 2 heat; fixed
anticipator stage 1 heat and cool; changeover with
cooling; includes shunt to bypass stage 2
anticipator with auxiliary heat relays; used with
Q672F1158.
Y594G1252
G1091 Lennox logo; same as T872G1026 except meets
DoD specs.
See subbase description for
replacement information.
G1109 Tappan logo; no. 080-13708-52; adjustable
anticipator stage 1 heat and cool; changeover with
cooling; used with Q672F1117.
Y594G1252 Wiring differences (old=new): C=X.
G1117 Changeover; used with Q672F1125. Y594G1252 Wiring differences (old=new): C=X.
G1125 Lennox logo; no. 63A0401; Celsius scale; isolated
auxiliary heat power circuit; fast cycle anticipator
stage 2 heat.
None
G1133 Rheem logo; no. RXMT-B71; adjustable
anticipator stage 2 heat; fixed anticipator stage 1
heat and cool; changeover with cooling; includes
shunt to bypass stage 2 anticipator with auxiliary
heat relays; used with Q672F1158, F1232.
Y594G1252
G1141 Ruud logo; adjustable anticipator stage 2 heat;
fixed anticipator stage 1 heat and cool;
changeover with cooling; includes shunt to bypass
stage 2 anticipator with auxiliary heat relays; used
with Q672F1158.
Y594G1252
G1158 Carrier logo; same as T872G1075. Except DoD
styling.
See subbase description for
replacement information.
G1166 BDP used with Q672F1125. Y594G1252 Wiring differences (old=new): C=X.
G1174 BDP used with Q672F1125. Y5 94G1252 Wiring differences (old=new): C=X.
G1182 Carrier; no. HH07AT071C; Celsius scale; used
with Q672L1052, J1054.
See subbase description for
replacement information.
G1190 Tappan; no. B13708-57; used with Q672L1078 for
8 and 10 ton heat pumps with 2 compressors.
None
Table 6. T872-T874 Thermostat Cross Reference.
Model Number Description
T874 Trade
ReplacementaRemarks
aWhen replacing a T872 Thermostat and Q672 Subbase, always replace both the thermostat and the subbase.