Honeywell T7984 B 用户手册
T7984 A,B,C ELECTRONIC MODULATING CONTROL THERMOSTATS
T7984A
Output 1 analog
2œ10V
Output 2
on/off
Mode input
jumper
Changeover input
for Out 1
Day/Night
mode (NSB)
Remote sensor
option
75°F setpoint
limit
Cooling and/or
heating
X
X
WIRING
To install a remote duct or room temperature sensor, adust DIP
the screw terminals and wire as shown.
switch S6 to 0 = off and wire as shown.
(If sensor is used, wire 1changeover sensor per
To reverse operation of output 1 to heating, install the
thermostat.)
changeover contact or the changeover sensor across
Fig. 2. T7984A Wiring
Input (2-10 Vdc)
24 Vac
Common
24 Vac
Common
2-10 Vdc valve or VAV
analog actuator
analog actuator
Duct
or
Room
Not used
Remote
sensor input
sensor input
(0 Vac)
Output 1
2-10 Vdc
Changeover
input for Out 1
Changeover
contact
OR Changeover
sensor
24 Vac
Power supply
(0 Vac)
(0 Vac)
24 Vac Transformer
SEQUENCE
SETPOINT DIAL CENTERED
End
Heating mode
End
Opened
Cooling mode
Device
Device
changeover
100%
opened
opened
input active
10 Vdc
10 Vdc
50%
End
0%
Closed
End
Device
closed
closed
Device
Temperature increase
OUTPUT 1 ANALOG
Fig. 3. T7984A Sequence
DIP SWITCH SETTINGS
REMOTE SENSOR
MAIN SENSOR
S6
LOCAL INTERNAL
1
REMOTE SENSOR 0
<< Not used
ON = 1
OFF = 0 6 7 8
Fig. 4. T7984A Dip Switch Settings
95C-10815–2
4