What is the maximum number of waterflow initiating devices allowed on a single initiating device circuit?

What is the maximum number of waterflow initiating devices allowed on a single initiating device circuit?

• A. 3
• B. 10
• C. 5
• D. 20

Answer: (C)

Waterflow initiating devices are used to signal a sprinkler system when water is flowing, and they’re connected to an initiating device circuit with a controlled amount of loading. The circuit—and the panel’s input channels that monitor it—needs to stay within a reliable operating range so that every device can be supervised and can signaling accurately when it should. Limiting the number of waterflow devices on one circuit to five keeps the total load low enough to prevent voltage drop, ensures proper supervision of each device, and reduces the chance of missed or delayed alarms. If more devices are needed, they should be split across additional initiating device circuits or using appropriate interface modules.

Waterflow initiating devices are used to signal a sprinkler system when water is flowing, and they’re connected to an initiating device circuit with a controlled amount of loading. The circuit—and the panel’s input channels that monitor it—needs to stay within a reliable operating range so that every device can be supervised and can signaling accurately when it should. Limiting the number of waterflow devices on one circuit to five keeps the total load low enough to prevent voltage drop, ensures proper supervision of each device, and reduces the chance of missed or delayed alarms. If more devices are needed, they should be split across additional initiating device circuits or using appropriate interface modules.