In automatic foam-water deluge systems, what is the purpose of the detection equipment?

In automatic foam-water deluge systems, what is the purpose of the detection equipment?

• A. To trip water deluge valves and other system-control equipment
• B. To alert the fire department
• C. To operate the building's HVAC
• D. To supply electricity to alarms

Answer: (A)

In an automatic foam-water deluge system, detection equipment is there to sense a fire condition and actively start the system by triggering the release mechanism. Because a deluge system has all sprinklers open, water (and foam solution) must be released to the entire piping network. The detectors provide the signal to trip the main deluge valve and other control devices, initiating water flow to all sprinklers and starting foam proportioning as designed. This is the essential function—the detectors activate the control equipment to deliver the suppressant—rather than simply sounding alarms, operating HVAC, or powering other alarms.

In an automatic foam-water deluge system, detection equipment is there to sense a fire condition and actively start the system by triggering the release mechanism. Because a deluge system has all sprinklers open, water (and foam solution) must be released to the entire piping network. The detectors provide the signal to trip the main deluge valve and other control devices, initiating water flow to all sprinklers and starting foam proportioning as designed. This is the essential function—the detectors activate the control equipment to deliver the suppressant—rather than simply sounding alarms, operating HVAC, or powering other alarms.