1. 

   JFLame Member

   I have Intellizone2 zone dampers. They are two wire. Are these normally spring close or spring open? I want to add a zone damper to the return on the basement zone so I can completely isolate it, and I'm not sure which typeI need to go with.

    

   JFLame, Feb 11, 2019

   #1
2. 

   geoxne Active Member Forum Leader

   Spring open.

    

   geoxne, Feb 11, 2019

   #2

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