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28 NetworkAIR IR Operation, Maintenance, and Troubleshooting
Set Up Group
Up to four NetworkAIR Systems can be connected to form a redundant Group. Joining Systems
together to form a Group provides the following:
• Redundancy
• A way for other Systems in the Group to assist with the room load
• Demand fighting prevention (one System cooling while another reheats)
• System run time balancing
• Setpoint Sharing among Systems
• Alarm sharing among Systems
Group config
Path: Main > Setup > Group > Group Config
The Group Config settings define the options to use in the redundant Group.
# Systems. Set the number of Systems connected together to form this Group. Setting the number of
Systems to 1 disables the Group functions.
Setpoint Share. Enable or disable setpoint sharing among the Systems of this Group. When
setpoint sharing is enabled, changes to the cool or reheat setpoint on any System in the Group are
copied to all of the other Systems.
The Humidify and Dehumidify mode setpoints are always shared.
Idle Blwr Spd. Set the behavior of the blowers for Systems that are in the idle, backup, or failed
states. Systems that are not active (idle, backup, or failed) should maintain blower operation in raised
floor installations to maintain static pressure and to keep cool air flowing to your data center
equipment rather than up through an idle NetworkAIR FM System.
Dmnd Fighting. When enabled, reheat is prohibited for all Systems in the Group, when any System
in the Group has a cooling demand. This prevents Systems from working against each other.
Grp Fire Alrm. Share fire alarms among the Systems in this Group. If the Group Fire Alarm
setting is On, all Systems in the Group will shut down if a fire alarm occurs in one System. If the
Group Fire Alarm setting is Off, the alarms will still be shared with the other Systems, but they will
not shut down.
Note
Group settings are copied to each System in the Group.
Note
The humidify and dehumidify setpoints are always shared.