• Mark created a new forum post in ATA 26 Fire Protection
    I had assumed that all APU fire detection systems were Kidde systems. Kidde systems are wired in series.
      
      
     
      
      
    I recently worked on a Systron-Donner fire detection system on a APU.
      
      
     
      
      
    I didn't verify resistance readings of each loop (two loops in each system) to see what the fire card might be reading. For a Kidde, we're looking at less than 20 ohms. I would guess 1.5K ohms for the Systron-Donner, but I would need to check one first.
      
      
     
      
     
    1. View Thread →
    0
    0
    0
    0
    0
    0
    Post is under moderation
    Stream item published successfully. Item will now be visible on your stream.
Unable to load tooltip content.