Honeywell Modulating Electronic Control Thermostats - Kele

T6984, T7984
are microprocessor-based thermostats that
provide proportional-plus-integral individual room
temperature control in zoned commercial Heating,
Ventilation and Air Conditioning systems such as
hydronic heating and/or cooling, pressure
dependent VAV or by-pass box, with or
without terminal reheat.
Modulating Electronic Thermostats for Commercial Buildings
The T6984 family provides floating SPST
control. T7984 series provides modulating
(2 to 10 Vdc analog) control. Optional features include
automatic heat/cool changeover, reheat control, remote
night setback with local timed override, and remote
sensor on VAV models. Vertical or horizontal,
they have an attractive appearance.

T6984, T7984 Modulating Electronic Thermostats for Commercial Buildings
Features
• PI control action provides accurate, stable room temperature control.
• T6984 models are used with Series 60 direct-coupled damper actuators
such as ML6161 or ML684, or with Series 60 valve actuators
such as VC6930 or M6410.
• T7984 models are used with Series 70 direct-coupled actuators such
as ML7161 or ML7984, or with valve actuators such as ML7285,
ML7421, ML7425, ML7474 or ML7475.
• All models have user-friendly setpoint knob.
• All models feature output status LEDs for installer check-out.
• Locking cover and range stops are standard.
• Night setback models provide selection of two different offset temperatures
and use central time switch control.
Model Specifications T6984:
• Night setback models also feature 2 1/2 hr. local timed override.
• Heat/cool models provide automatic changeover with 3° or 5°F
(1.5 °or 3°C) selectable Zero Energy Band (Z.E.B.) to meet
requirements of ASHRAE 90.1.
• Heat/cool models have installer-definable setpoint at midpoint
of Z.E.B., at heating setpoint, or at cooling setpoint.
• Reheat models feature fast/slow response selection to match
heating system dynamics
• T6984 features selectable motor timing from 20 sec. to 7 min.
• Horizontal or vertical formats.
Setpoint Range: 55–90°F (13–32°C) – T6984A,C,E,T7984A
Heating 55–75°F* (13–24°C) – T6984B,D,T7984B,C
Cooling 75*–90°F (24–32°C) – T6984B,D,T7984B,C
* The maximum heating setpoint and minimum cooling
setpoint is electronically limited to 75°F(24°C).
Accuracy: 1°F (0.4°C) Precision: ±1°F (0.4°C)
Accessories: 272845 Remote Sensor (wall mounted); 272847
Remote Sensor (duct mounted); 272846 Adapter Plate for
2-gang NEMA or British 75 mm elect. box
Model Specifications T7984:
Model
Stage 1
(Cooling)
Stage 1
H/C C/O
Reheat
Output
Night
Setback
Sensor
Model
Stage 1
(Cooling)
Stage 1
H/C C/O
Reheat
Output
Night
Setback
Sensor
T6984A
T6984B
T6984C
floating
floating
floating
n/a
n/a
optional
n/a
on/off
n/a
n/a
n/a
n/a
internal
internal
internal
T7984A
T7984B
analog
analog
optional
optional
n/a
on/off
n/a
remote
internal
internal
T6984D
T6984E
floating
floating
optional
optional
on/off
n/a
remote
n/a
internal
remote or
internal
T7984C
analog
optional
analog
remote
remote or
internal
Installation Options T6984
Installation Options T7984
Perameter
Motor Timing
Selection
20;30;60;90;120/150;240 or 420
Model
A B C D E
• • • • •
Perameter
Night Setback
Selection
5°F (3°C) heat/cool offset,or 10°F(5°C) heat
offset,20°F(11°C) cool offset
Model
A B C
•
Night Setback
5°F (3°C) heat/cool offset, or 10°F
(5°C) setback/cooling shutdown
•
Zero
Energy Band
3°F (1.5°C); or, 5°F (3°C)
• •
Zero
Energy Band
3°F (1.5°C); or, 5°F (3°C)
• •
Setpoint
Definition
Heating; Cooling or H/C midpoint
• •
Setpoint
Definition
Heating; Cooling or H/C midpoint
• •
Reheat Time
Constant
Fast (7.5 min.);or Normal (15 min.)
• •
Reheat Time
Constant
Fast (7.5 min.);or Normal (15 min.)
• •
Main
Sensor
Remote or internal
•
Home and Building Control
Honeywell Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited
155 Gordon Baker Road
North York, ON M2H 3N7
Helping You Control Your World
6A1497 7/97