Group operation

Fire dampers may belong to a group or operate in stand-alone mode.

A group may contain any number of passive and motorized fire dampers.


The group status is fire, if any damper of the group has a fire or smoke alarm


Group operation means that all the motorized dampers of the group open or close at the same time if any fire damper of the group detects an alarm.


To add dampers to a group you have to do the following:

  1. You need "MAX" statement to combine all the passive dampers "FireStatus" outputs to one common alarm output.
  2. Connect this common alarm to the "FireStatus" of the first motorized damper in the group
  3. Cascade the "FireStatus" outputs to the "FireStatus" inputs of all the following dampers
  4. Add the output "FireStatus" of the last damper to the common alarm output of the group of passive dampers (to "MAX" statement)