Honeywell T874 - Page 70

T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—8 70
T874W 3-stage heat, 2-stage cool, manual changeover.
W1007 118 Obsolete. Honeywell logo; Westinghouse special; used
with Q674L1256.
T8611M2025
(programmable)
Includes night setback.
W1015 54 Honeywell logo; used with Q674B1216 and C815A1005;
used in Y594W1014.
T874W1015
W1023 233 Obsolete
. Lennox Advanced Heat Pump System logo;
used with Q674L1280 and W89.
T874W1015
W1031 140 Obsolete
. No logo; Rheem part no. 41-20797-20; used
with Q674L1546 and C815A1005; used in Y594W1022.
T8611M2025
(programmable)
Includes night setback.
W1049 100 Obsolete
. McQuay logo; part no. 61202501; 12°F
interstage differential between H2 and H3 for night
setback; used with Q674C1363.
T8611M2025
(programmable)
Includes night setback.
W1056 220 Obsolete. McQuay/Snyder General logo; part no.
1202501; 12°F differential between H2 and H3 for night
setback; used with Q674C1363 (61202502).
See OEM for
replacement.
W1064 220 Obsolete
. AAF/Snyder General logo; part no.
066804408; 12°F differential between H2 and H3 for
night setback; used with Q674C1363 (66804408).
See OEM for
replacement.
W1072 140 Obsolete
. Honeywell logo (Inter-City Products); used in
Y594W1030.
T8611M2025
(programmable)
Includes night setback.
W1080 220 McQuay logo; part no. 073318901; Premier White®
color; 12°F differential between H2 and H3 for night
setback.
None
W1106 247 Obsolete
. Addison logo; part no. 843-277; °F/°C
scaleplate; used with Q674L1934 in Y594W1055.
T8611M2025
T874Y Heat pump model; 2-stage heat, 2-stage cool, heat or
cool auto changeover.
Y1005 210 Obsolete
. Mammoth Water Source Heat Pump logo;
used with Q674E1353; used in Y594Y1004.
See OEM for
replacement.
Y1013 248 Obsolete
. WaterFurnace logo; part no. TA21H03;
Premier White® color; °F/°C scaleplate; used with
Q674F1675 (32003081).
See OEM for
replacement.
Table 8. T874 Cross Reference.
Model
Number
Fig.
No. Description
Trade Model
Replacement Remarks
a
Both the thermostat and subbase must be replaced.