T874 Thermostat Accessories; T874 Thermostat Specifications - Honeywell T874 Product Data

T874 MULTISTAGE THERMOSTATS AND Q674 SUBBASES
Key Lock Cover: Part no. TG504A replaces existing T874
cover. Mounts on T874 base and covers thermostat settling
levers and subbase switches. Includes LED window and
two keys. Should not be used with 193121A Adapter Plate.
194559R Locking Cover
with Thermometer
Allen Wrench
Models and Options
T874A—Standard and TRADELINE®.
— 72°F/78°F (22°C/26°C)setpoint
stops with locking cover.
— Adjustable anticipator set 0.4A.
— Adjustable locking temperature
stops (TRADELINE®).
— 72°F/78°F (22°C/26°C) setpoint
stops with locking cover, no
a
thermometer (for DoD
T874B—Standard and TRADELINE.
T874C—Standard and TRADELINE.
— 72°F/78°F (22°C/26°C)set stops
with locking cover, no thermometer
a
(for DoD ).
— 12°F (7°C) differential between
H1 and H2 stages (T874C1125).
— Fast cycling.
T874D—Standard and SUPER
TRADELINE®.
— Adjustable locking temperature
stops (SUPER TRADELINE).
T874E—Standard and TRADELINE.
T874F—Standard and TRADELINE.
— Locking cover.
a
Department of Defense.
b
Changeover stage operates with heating.
c
Fixed voltage type anticipation.
d
Changeover stage operates with heating; a secondary changeover is provided in cooling switch.
e
Provides night setback used with standard T874 and timer-operated remote switching.
f
Manual changeover stage—use Q674B,L subbase.
g
Changeover stage operates with cooling.
60-2485—8
TG504A1033 Key Lock
Fig. 2. T874 Thermostat accessories.
Table 3. T874 Thermostat Specifications.
Replaces Applications
T872A
).
T872B
T872C
T872D
T872E 2-Stage Cool
T872F 2-Stage Heat
Q674 Subbases
— TG504A1025: Blank face, internal thermometer.
— TG504A1033: External thermometer. See Fig. 2.
Cover with External
Thermometer
System Stages
Heat Cool Other Stage 1
Standard 1 1
Standard 1 2
Standard 2 1
Standard 2 2
— 2
2 —
4
TG511D1004 Includes
Painted Steel Cover,
Opaque Base and Wallplate
Anticipation
Heating (Adj)
Stage 2 Stage 1 Stage 2
— 0.1-1.2A —
— 0.1-1.2A —
— 0.1-1.2A 0.1-1.2A 0-1.5A
0.12- 0.12-
0.6A 0.6A
— 0.1-1.2A 0.1-1.2A 0-1.2A
— — —
— 0.1-1.2A 0.1-1.2A
Cooling (Fixed)
0-1.5A —
0-1.2A 0-1.0A
—
0-1.0A
0-1.2A 0-1.0A
— —