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Appendix A: VAV Zone Controller Points/Properties
Point Name/Description
Default/Range
Override Time Remaining
– The amount of time remaining in an override period.
R: 0 to 480 minutes
Occupancy Contact Status
– The physical state of the controller's
Remote
input.
R: Inactive
Active Unoccupied/Stdby
Global Occupancy –
The
System Occupancy
network input's current state.
D:
R:
Unoccupied
Unoccupied/Occupied
Alarms
Navigation:
i-Vu® / Field Assistant:
BAC
view
®:
Properties
>
Equipment
>
Alarms
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>
ALARM
Point Name/Description
Range
Space Temperature
– Indicates if the space temperature exceeds the high or low alarm limit. R:
Normal/Alarm
Alarming Temperature
– Indicates the space temperature value that caused the space
temperature alarm. This value is only displayed when the
Space Temperature
alarm (above)
is in
Alarm
.
R:
-56 to 245°F
(-48.9 to 118.3°C)
Alarm Limit Exceeded
– Indicates the value of the space temperature alarm limit that caused
the space temperature alarm condition. Value is only displayed when the
Space Temperature
alarm (above) is in
Alarm
.
R:
-56 to 245°F
(-48.9 to 118.3°C)
Space Temp Sensor –
Indicates if the space temperature sensor fails.
R:
Normal/Alarm
Indoor Air Quality
– Indicates if the occupied CO
2
level exceeds the
Occupied High CO2 Alarm
Limit
.
R:
Normal/Alarm
Supply Air Temperature
– Indicates if the supply air temperature exceeds the high
temperature alarm limit or drops below the low temperature alarm limit.
R:
Normal/Alarm
Filter
– Indicates if the filter's runtime hours exceeds the runtime alarm limit.
R:
Clean/Dirty
Space Relative Humidity
– Indicates if the relative humidity exceeds the high RH alarm limit.
R:
Normal/Alarm
Network OAT -
Indicates if the controller is not receiving a valid OAT value over the network.
R:
Normal/Alarm
Airside Linkage Status
– If the controller is the VVT Master,
Alarm
indicates that it lost
Linkage communications with the air source. If the controller is a slave,
Alarm
indicates that it
lost Linkage communications with the VVT master.
R:
Normal/Alarm
VAV Zone Controllers
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