Originally Posted by
Rick Hurst
I've heard that some AHJ are now requiring them as such at exit locations or exit corridors.
Say someone decides they would like to place an object with fire against the outside sprinkler head causing those in the house to go off and cause damages.
Just a thought.
Only the affected sprinkler heads would go off (only those where the heat would open the solder link or break the bulb.) All the heads would not go off because one opened up. Most of the time the fire is controlled by one or two heads. Makes for good TV when every sprinkler head goes off at the same time. 20+ years as a firefighter though and I can tell ya, it don't happen like that.
As far as where its mounted, it doesn't appear to be proper, there should be a deflector to direct the waterflow down. And while you do test with water the system should be designed and installed so that there is a low spot in the system for the inspectors test & drain.