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T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
60-2485—82
ORDERING INFORMATION
When purchasin
g
replacement and modernization products from
y
our TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalo
g
or price sheets for complete orderin
g
number.
If
y
ou have additional
q
uestions, need further information, or would like to comment on our products or services, please write or
phone:
1.
Your local Home and Buildin
g
Control Sales Office
(
check white pa
g
es of
y
our phone director
y)
.
2.
Home and Buildin
g
Control Customer Relations
Hone
y
well, 1885 Dou
g
las Drive North
Minneapolis, Minnesota 55422-4386
(
800
)
328-5111
In Canada—Hone
y
well Limited/Hone
y
well Limitée, 35 D
y
namic Drive, Scarborou
g
h, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturin
g
in Australia, Canada, Finland, France,
German
y
, Japan, Mexico, Netherlands, Spain, Taiwan, United Kin
g
dom, U.S.A.
SPECIFICATIONS
IMPORTANT
The specifications given in this publication do not
include normal manufacturing tolerances. Therefore,
this unit may not exactly match the listed specifica-
tions. This product is tested and calibrated under
closely controlled conditions, and some minor differ-
ences in performance can be expected if those con-
ditions are changed.
Super Tradeline
®
/Tradeline
®
Models
SUPER TRADELINE controls offer features not available on
TRADELINE or standard models, and are desi
g
ned to replace
a wide ran
g
e of Hone
y
well and competitive controls.
TRADELINE models are selected and packa
g
ed to provide
ease of stockin
g
, ease of handlin
g
, and maximum
replacement value. Specifications of SUPER TRADELINE
and TRADELINE controls are the same as those of standard
models except as noted below.
Super Tradeline Models
T874 THERMOSTAT
T874D Thermostat. Provides two sta
g
es of heatin
g
and two
sta
g
es of coolin
g
. Use with Q674A-F Subbases.
Y594D
(
T874D/Q674E/TG504A
)
Thermostat/Subbase/ke
y
lock cover packa
g
e. Provides two sta
g
es of heatin
g
and
two sta
g
es of coolin
g
. Includes a ke
y
lock cover for set-
point protection.
Y594G
(
T874G/Q674F
)
Thermostat/Subbase packa
g
e for
heat pump. Provides two sta
g
es of heatin
g
and one sta
g
e
of coolin
g
. Automatic chan
g
eover in heat or cool mode.
Available in bei
g
e or Premier White® color.
Y594R
(
T874R/Q674L
)
Thermostat/Subbase packa
g
e for
heat pump. Provides two sta
g
es of heatin
g
and one sta
g
e
of coolin
g
. Manual chan
g
eover in heat or cool mode. Avail-
able in bei
g
e or Premier White® color.
SUPER TRADELINE FEATURES:
• SUPER TRADELINE packa
g
e with cross reference label
and special instruction sheet.
• SUPER TRADELINE model supplied with lockin
g
lever and
lockin
g
cover accessories.
• Includes ad
j
ustable temperature lockin
g
stops.
• T874D replaces T874A-F TRADELINE or standard models.
Tradeline Models
T874 THERMOSTAT
• T874 TRADELINE models provide sta
g
ed heat and/or cool
operation. See Table 1.
Table 1. Heating and Cooling Stages.
• T874A-F are standard models.
TRADELINE FEATURES:
• TRADELINE packa
g
e with cross reference label and
special instruction sheet.
• T874A,C model available with factor
y
stops for DoD
applications.
• T874A,C model available with ad
j
ustable temperature
lockin
g
stops.
Q674 SUBBASE
Q674 switchin
g
subbases provide s
y
stem and fan switchin
g
.
See Table 2.
Table 2. System and Fan Switching.
TRADELINE FEATURE:
• TRADELINE packa
g
e with cross reference label and
special instruction sheet.
• Q674A-E,G are standard
(
non-heat pump
)
models.
Q674F,J,L are heat pump models.
Models ABCDEF
Heatin
g
Sta
g
es 1122— 2
Coolin
g
Sta
g
es 12122—
Q674 System Fan
A Heat-Auto-Cool Auto-On
B Heat-Off-Cool Auto-On
C Off-Auto Auto-On
D None None
E Off-Heat-Auto-Cool Auto-On
F Em. Ht.-Off-Heat-Auto-Cool Auto-On
G Off-Auto None
J Em. Ht.-Auto-Off Auto-On
L Em. Ht.-Heat-Off-Cool Auto-On