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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
37 60-2485—8
N1010 Williamson lo
g
o; ad
j
ustable anticipator sta
g
e 1
and 2 heat; fixed anticipator sta
g
e 1 cool; used
with Q672F1133 or F1315.
T874N1016/
Q674F1220
N1028 TRADELINE heat mode chan
g
eover; used with
Q672F1216.
T874N1016
N1036 Bard; used with Q672F1299. T874N1016/
Q674F1220
N1044 Thermotron lo
g
o; 1st sta
g
e chan
g
eover heat
mode; used with Q672F1299.
T874N1016/
Q674F1220
T872Q
1-sta
g
e heat; used with another T872 for heatin
g
setback.
Q1009 Standard OEM T874C1125
Q1017 York lo
g
o T874C1125 Replacement onl
y
g
ood for
1-sta
g
e heat and 1-sta
g
e cool
applications.
Q1025 ITT lo
g
oNone
Q1033 Lennox lo
g
o; no. P-8-8899. None
Q1041 Lennox lo
g
o; no. 63A6401. None
T872R
Heat pump model; 2-sta
g
e heat, 1-sta
g
e cool,
manual chan
g
eover.
R1008 Fixed anticipator sta
g
e 1 heat and cool; no
anticipator sta
g
e 2 heat; chan
g
eover with coolin
g
;
used with Q672B1046.
Y594R1425 Wirin
g
differences
(
old=new
)
:
W=W2; W1-Y1
j
umper re
q
uired.
R1016 Addison same as T872R1008; used with
Q672B1103.
Y594R1425 Wirin
g
differences
(
old=new
)
:
W=W2; W1-Y1
j
umper re
q
uired.
R1024 Lennox lo
g
o; fast c
y
cle sta
g
e 2 heat; fixed
anticipator sta
g
e 1 heat and cool; chan
g
eover with
coolin
g
; used with Q672B1160 and Q672L1003.
See subbase description for
replacement information.
R1032 York lo
g
o; fixed anticipator sta
g
e 1 and 2 heat and
sta
g
e 1 cool; chan
g
eover with coolin
g
; used with
Q672L1011.
Y594R1664
R1040 Lennox lo
g
o; fast c
y
cle sta
g
e 2 heat; fixed
anticipator sta
g
e 1 heat and cool; isolated sta
g
e 2
heat switch; chan
g
eover with coolin
g
; used with
Q672B1202 no. P-8-11221, Q672L1029
See subbase description for
replacement information.
R1057 TRADELINE; fixed anticipator sta
g
e 1 heat and
cool; no anticipator sta
g
e 2 heat; chan
g
eover on
coolin
g
; used with Q672L1037; outdoor reset.
Y594R1763 Desi
g
ned for use on General
Electric heat pumps. Wirin
g
differences
(
old=new
)
: A=T.
R1065 Ad
j
ustable anticipator sta
g
e 2 heat; fixed
anticipator sta
g
e 1 heat and cool; chan
g
eover on
coolin
g
; used with Q672L1045.
Y594R1243
R1073 Lennox lo
g
o; no. 63A0301; Celsius scale;
separate auxiliar
y
heat power circuit; fast c
y
cle
sta
g
e 2 heat antic.
None
R1081 Ruud lo
g
o; same circuit as T872R1065; used with
Q672L1045, L1136.
Y594R1243
R1099 Dunham Bush special; used with Q672L1060,
L1383.
Y594R1243
R1107 Rheem; no. RXMT-B70; used with Q672L1045,
L1136.
Y594R1243
R1115 Friedrich lo
g
o; fixed anticipator; used with
Q672B1244, L1086.
See subbase description for
replacement information.
Table 6. T872-T874 Thermostat Cross Reference.
Model Number Description
T874 Trade
Replacement
a
Remarks
a
When replacin
g
a T872 Thermostat and Q672 Subbase, alwa
y
s replace both the thermostat and the subbase.