In locations more likely to freeze, you should have a dry-pipe system.
Even if they are built for colder settings, dry-pipe systems can also freeze if water enters the pipes improperly.
This balanced response was accomplished by using a dry-pipe system, a suppressant agent called FM-200, and intelligent smoke detectors.
The first part of creating a solution to this dilemma was a dry-pipe system, where the pipes leading to the sprinklers are initially empty and charged with air, and water in the system is held behind a junction point.
Similarly, dry-pipe systems
, in which the piping is filled with air under pressure until the tire protection system activates, often collect moisture and condensation in low points in the system; again, providing environments in which stagnant water can promote corrosion.
A Fluid Delivery Time computer program that simulates water flowing through a dry system in order to accurately predict critical "water-to-fire" delivery time for dry-pipe systems