Thought I would post this for FYI.
I inspected a new condo the other day and found the unit was equipped with a sprinkler system. I then found one of the sprinkler heads on the outside of the unit. It was on the rear side of the structure under the upper units deck.
I did some research and found that these exterior need parts of the system need to be winterized. Here is what I put in my report.
An exterior fire suppression sprinkler head is installed at the exterior rear side of the structure. Exterior sprinkler heads require to be winterized to prevent freezing resulting in possible damage to the sprinkler head & related plumbing. Contact the Condo Association to determine who is responsible for winterizing this system.