Which of the following is NOT an initiation method for sprinkler heads?

Which of the following is NOT an initiation method for sprinkler heads?

• A. Remote control valve
• B. Heat sensors
• C. Fusible link
• D. Manually

Answer: (A)

Initiation of sprinkler heads is about how each head is triggered to release water. Sprinkler heads respond to heat with built-in mechanisms, such as a fusible link that melts at a certain temperature or a glass bulb that breaks when heated, which directly causes the head to discharge. Some systems also allow manual initiation through local action, triggering water flow through the network. A remote control valve, on the other hand, is an external device that controls whether water can enter the piping system. It starts or stops water supply to the network as a whole but does not directly trigger an individual sprinkler head to release water. That’s why a remote control valve isn’t considered an initiation method for sprinkler heads.

Initiation of sprinkler heads is about how each head is triggered to release water. Sprinkler heads respond to heat with built-in mechanisms, such as a fusible link that melts at a certain temperature or a glass bulb that breaks when heated, which directly causes the head to discharge. Some systems also allow manual initiation through local action, triggering water flow through the network. A remote control valve, on the other hand, is an external device that controls whether water can enter the piping system. It starts or stops water supply to the network as a whole but does not directly trigger an individual sprinkler head to release water. That’s why a remote control valve isn’t considered an initiation method for sprinkler heads.