T7984 A,B,C ELECTRONIC MODULATING CONTROL THERMOSTATS
SPECIFICATIONS
IMPORTANT
The specifications given in this publication do not include normal manufacturing tolerances. Therefore, this unit may not
exactly match the listed specifications. Also, this product is tested and calibrated under closely controlled conditions,
and some minor differences in performance can be expected if those conditions are changed.
MODELS: T7984A,B,C, 2 to 10 Vdc analog output
Table 1. Model Specifications
Model
Output 1
Cool/Heat
Changeover
For Output 1
Output 2
Night Setback
Main
Temperature
Sensor *
Mode Selection
Input
T7984A
Modulating 2 to
10 Vdc
Dry Contact or
Sensor
On/off
-
Internal or
remote
-
T7984B
Modulating 2 to
10 Vdc
-
-
Dry Contact
Internal or
remote
Jumper
T7984C
Modulating 2 to
10 Vdc
Dry Contact or
Sensor
Modulating 2 to
10 Vdc
Dry Contact
Internal or
remote
-
* Remote sensor models are:
272845 Remote wall mount sensor
272847 Remote duct mount sensor
DIMENSIONS
See Figure 1.
MOUNTING:
Mounts to single-gang NEMA-standard 2"x 4"
electrical box, or directly to wall requires 1 1/8“ [35„mm]
access hole for wiring.
WIRING:
Four to eight 1/8“ screw terminals suitable for 2 no.
18 AWG [1 mm 2] wires each depending on model.
POWER SUPPLY:
19-30 Vac, 50-60 Hz, 2 VA, Class 2. (Does
not include actuator or reheat stage power requirements.)
OPERATING AMBIENT:
32-104°F [0-40°C] at 5-95% Relative Humidity (non-
condensing).
ACCURACY:
1°F (0.6°C) PRECISION: ±1°F (0.5°C) tempera-
ture after stabilization.
PRECISION:
±1°F (0.5°C) temperature after stabilization.
SETPOINT RANGE:
55-90°F [13-32°C], T7984A.
Heating:
55-75°F [13-24°C], T7984B, C*.
Cooling:
75-90°F [24-32°C], T7984B, C*.
ORDERING INFORMATION
* The maximum heating setpoint and minimum cooling
setpoint is electronically limited to 75°F [24°C].
REMOTE SENSOR:
47 k
Ω
NTC thermistor [part nos. 272845
and 272847].
ANALOG OUTPUT:
2 to 10 Vdc, 2 mA max.
SWITCHED OUTPUT RATING:
0.5A running, 1.1A inrush,
24Vac, protected with selfresetting fuse.
OPERATING PARAMETERS:
See Table 2 for installer selections.
APPROVALS:
Designed for Class II low voltage installation only.
Case and cover meets UL„94-5V flammability requirements,
and North American codes for line voltage thermostat
enclosures.
Meets requirements of F.C.C. Part 15 Class B, IEC 801-3 for
radio frequency interference.
ACCESSORIES:
272845 - Remote sensor (wall mounted).
272846 - Adaptor plate for 2-gang NEMA, or British 75 mm
electrical box.
272847 - Remote sensor (duct mounted).
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1.
Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2.
Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada–Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
95C-10815–2
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