Upright Sprinklers are defined as sprinklers positioned upright, facing upward.

Upright Sprinklers are defined as sprinklers positioned upright, facing upward.

• A. Sprinklers mounted on walls.
• B. Sprinklers hanging down from the ceiling.
• C. Sprinklers with deflectors.
• D. Sprinklers positioned upright, facing upward.

Answer: (D)

Upright sprinklers are defined by how the head is mounted: the sprinkler body is vertical and the deflector is oriented toward the ceiling. That means the proper description is “positioned upright, facing upward.” This distinguishes them from other orientations, like wall-mounted (sidewall) heads or pendant heads that hang from the ceiling with the deflector facing downward. In NFPA 13R, matching the correct orientation helps ensure the intended spray pattern and clearance are achieved.

Upright sprinklers are defined by how the head is mounted: the sprinkler body is vertical and the deflector is oriented toward the ceiling. That means the proper description is “positioned upright, facing upward.” This distinguishes them from other orientations, like wall-mounted (sidewall) heads or pendant heads that hang from the ceiling with the deflector facing downward. In NFPA 13R, matching the correct orientation helps ensure the intended spray pattern and clearance are achieved.