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BACnet Setup and Configuration
The Intelli-Hood system has separate system-level, Exhaust Fan, Auxiliary Airflow and
Hood Controller specific BACnet configuration parameters. This section describes each
in detail.
System Controller BACnet Device Instance ID
This specifies the Device Instance ID that will be used by the System Controller. The
System Controller’s Device Instance ID defaults to 654000. Change this number as
needed based on available Device Instance IDs on your BACnet network.
System Controller BACnet Auto Number
Since the Intelli-Hood system is a virtual BACnet router with each Exhaust Fan, Auxiliary
Airflow and Hood Controller present as a separate Device Object, each one needs to have
a unique Device Instance ID. If you plan to sequentially number the Device Instance IDs
for the virtual Device Objects, the Intelli-Hood system can auto number the virtual Device
Objects for you. If “BACnet Auto Number” is set to “Yes”, each Exhaust Fan, Auxiliary
Airflow and Hood Controller will be assigned a unique Device Instance ID sequentially
after the System Controller’s Device Instance ID. See Appendix A if you need specific
details on how the automatic Device Instance Numbering works.
If you cannot use a sequential set of Device Instance IDs, then set this parameter to No
and statically assign each Device Instance ID.
System Controller BACnet Port
This specifies the UDP Port on which the Intelli-Hood system uses for BACnet
communication. This defaults to 47808 (0xBAC0).
System Controller DNET
This is the destination network (DNET) number for the virtual Device Objects. This needs
to be unique on your BACnet network or you will have communication issues to the
Intelli-Hood system. This defaults to 654.
System Controller BACnet Watchdog
This is the watchdog timeout for resetting the Virtual Input Module’s digital inputs. This
guards against the system being stuck in a state due to loss of communication. If the
system receives no BACnet communication that is addresses for the Intelli-Hood system
for the communication timeout period, then all digital inputs on all Virtual Input Modules
are reset. This can be set to between 0 and 600 seconds. Setting this parameter to 0
seconds disables the watchdog. This defaults to 300 seconds.
