In an elevator room a heat detector can be no further than how many feet from sprinkler head?

• A. 5 feet
• B. 2 feet
• C. 10 feet
• D. 15 feet

Answer: (B)

In elevator machine rooms, heat detectors are required to be placed very close to sprinkler heads so that a fire near the head is detected and the alarm is triggered immediately. The rule calls for a heat detector to be within two feet of a sprinkler head. This tight proximity ensures rapid detection that aligns with the sprinkler’s response, which is crucial in the confined, high-heat environment of an elevator room. If the detector were farther away, there’s a greater chance heat could rise and go undetected long enough to delay notification and coordination with the sprinkler system. Distances larger than two feet would create gaps in detection coverage, reducing the reliability of early alarm signaling and overall protection. So, two feet is the standard to ensure prompt, coordinated response in this specific setting.