Honeywell T874 Product Data page 75

Model Fig.
Number No.
C1389 205, Obsolete. Command Aire part no. P1099-0021; two
176 LEDs; used with T874G-H.
C1397 205, Obsolete. Command Aire part no. P1099-0023; used
171 with T874G-H.
C1413 213 Obsolete. Carrier part no. HH93AZ204; Fan: Lo-Med-
High-On; used with T874L1059.
C1439 217 Obsolete. Bard part no. 8404-016; used with
T874N1024.
C1454 163 Obsolete. Climate Master part no. AQ5354; two LEDs;
spring return momentary system switch position.
C1462 25 Climate Master Special.
C1470 221 Obsolete. Climate Master part no. RQ5370; used with
T874H1138.
C1496 74 Obsolete. Carrier part no. HH93AZ213; includes
SERVICE LED; used with T874H1161; used in
Y594H1038.
C1504 83 Obsolete. Carrier part no. HH93AZ214; used in Y594.
C1512 97 Obsolete. Carrier part no. HH93AZ216; System:
Override-Auto-Off; includes two LEDs; used in Y594.
C1520 72 Obsolete. Carrier part no. HH93AZ210; used with
T874D2049; used in Y594D1388.
C1538 163 Climate Master part no. AQ5354; System: Off-Auto-
Override; includes two LEDs and momentary spring
position.
C1546 76, Obsolete. McQuay part no. 060684802; gray color;
225 includes one LED.
C1553 181, Obsolete. McQuay logo; part no. 073319901; includes
203 one LED.
C1561 76 McQuay logo; part no. 073319701; includes one LED.
C1579 99, McQuay logo; part no. 073320001; includes one LED.
100
C1595 72 Obsolete. Standard OEM.
Q674D System: None; Fan: None
D1008 55, 66 Obsolete. Used with T874D1082, F1056; used in
Y594D1057.
D1016 55 Obsolete. Carrier part no. HH93AZ170; RC-RH jumper.
D1032 58 Obsolete. Borg-Warner; used with T874G.
D1040 55 TRADELINE
D1057 55, 66 Obsolete. York part no. 2TB04700424A.
a Both the thermostat and subbase must be replaced.
T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
Table 9. Q674 Subbase Cross Reference.
Description
75
Q674 Trade
Replacement
None See thermostat description for
replacement information.
None See thermostat description for
replacement information.
See OEM for
replacement.
See OEM for
replacement.
No momentary reset switch.
Y594G1393 a
Q674C1058 Replacement has no LEDs.
Wiring differences (old=new):
Y594H1012
a
Y1=O, Y2=Y; replacement has
MALFUNCTION LED only.
Wiring differences (old=new):
Y594H1012
a
Y1=O, Y2=Y; L-R jumper
required.
Wiring differences (old=new):
Y594H1012 a
Y1=O, Y2=Y, L=R, R=none; R-
L jumper required; no night
setback.
T8600D2028 Wiring differences (old=new):
(programmable) Y1=O, Y2=Y, L=R; W-Y
jumper required; night
setback.
T8600D2028 Wiring differences (old=new):
(programmable) L=R, W=O; W-Y jumper
required; night setback.
Q674C1058
Y594G1393 No momentary reset switch.
Q674C1058 Replacement has no LEDs;
beige color
Q674C1058 Replacement is beige.
See OEM for
replacement.
See OEM for
replacement.
Q674C1058
Q674D1040
Q674D1040 RC-RH jumper required.
T874D1165/ Wiring differences (old=new):
Y=Y2, O=Y1, W=W2; jumper
Q674D1040 a
W1-Y2 required.
Q674D1040
Q674D1040
Remarks
60-2485—8