What function does a gas train with regulators serve in a flame effects ignition system?

• A. It ignites the flame
• B. It controls and reduces pressure of gas to safe levels
• C. It detects flame
• D. It powers the sensors

Answer: (B)

Gas train regulators deliver gas at a safe, controlled pressure for the burner. They take the high-pressure supply and reduce it to a stable working pressure that the ignition system and burner can handle reliably, preventing overpressure, promoting consistent flame behavior, and protecting equipment. This function is about delivering gas safely and predictably, not igniting the flame, sensing it, or powering sensors, which are handled by other parts of the system.