Appendix A: VAV Zone Controller Points/Properties
I/O Points
Navigation:
i-Vu / Field Assistant:
BACview:
Properties
>
I/O Points
N/A
WARNING!
Do not change the
Value
,
Offset/Polarity
,
Exp:Num
,
I/O Type
,
Sensor/Actuator
Type
,
Min/Max
, or
Resolution
I/O configuration parameter for the points listed below. Changing these
parameters could cause improper control and/or equipment damage. Use extreme caution if locking a point as
this may also cause improper control and/or equipment damage.
Point Name/Description
Default/Range
Zone Temp Sensor/Zone Temp
•
Zone Temp Sensor
- (SPT Standard, SPT Plus, and SPT Pro sensors only). Sensor
configurations on the microblock's
Properties
>
Details
tab are listed below. For more
information, consult the
Carrier Sensors Installation Guide
.
•
Zone Temp
- do not adjust these settings.
R:
-56 to 245°F
(-48.9 to 118.3°C)
Sensor Type:
Min Present Value
- Minimum present value the sensor transmits before indicating
an alarm.
D:
45°F (7.2°C)
Max Present Value
- Maximum present value the sensor transmits before indicating
an alarm.
D:
96°F (35.5°C)
Setpoint Adjustment:
Max Adjust
– The amount that a user may adjust the setpoint at the sensors.
D:
R:
5∆°F (2.7∆°C)
0 to 15∆°F
(0 to 8.3∆°C)
Reset setpoint adjust to zero when unoccupied -
Resets the setpoint bias to zero
when the controller transitions to unoccupied..
D:
Off
Timed Local Override:
Allow Continuous
(SPT Pro only) – If checked, a user can press the sensor's local
override button until the
Max Accum
value is reached, then press one more time to
have a continuous override until the next occupied period or until the user cancels
the override. The display shows
On
during a continuous override.
D:
R:
Off
Off/On
Each Pulse
– The amount of time added to the total override time whenever a user
pushes the sensor's override button.
D:
R:
30:00 mm:ss
0:00 to 1440:00 mm:ss
Max Accum
– The maximum amount of override time accumulated when a user
pushes the sensor's override button.
D:
R:
240:00 mm:ss
0:00 to 2000:00 mm:ss
Cancel override
– How long a user must push the sensor's override button to cancel
an override.
D:
R:
3 seconds
0 to 60 seconds
70
VAV Zone Controllers
