Honeywell T874 Product Data page 70

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