During unsafe firing conditions in a large...

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Question 1 of 205eccefa3bacbc34ba4d47c5e

During unsafe firing conditions in a large automatic auxiliary boiler, various control actuators are interlocked with the burner circuit to prevent start-up, in addition to safety shutdown. These controls are referred to as __________.

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🔍 Key Concepts

• auxiliary boiler control systems (what each type of control generally does) • Difference between startup/prevent-start functions and normal operation/adjustment functions • Which control group specifically deals with unsafe firing conditions and shutdown

💭 Think About

• Ask yourself: which type of control is specifically designed to detect unsafe firing or flame failure and then lock out or shut down the burner? • Which controls mainly keep pressure, temperature, or fuel-air ratio within normal operating range, rather than directly handling flame failure? • Which term is most associated with burner safety circuits and interlocks on automatic boilers?

✅ Before You Answer

• Verify which control type is tied to burner safety shutdown and lockout when unsafe conditions are detected. • Separate in your mind the controls that regulate combustion (fuel/air) from those that protect against dangerous firing conditions. • Check which option best matches the idea of interlocks that prevent start-up as well as shut down the burner under unsafe conditions.

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