You are observing the flame condition on an...

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Question 1 of 2066636eef28f7522a1c51ff8a

You are observing the flame condition on an oil-fired auxiliary boiler through an observation window peephole. The flame is a reddish color accompanied by a noticeably panting/pulsating furnace. What would be the correlating color of the gases exhausting from the stack under these conditions?

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Question 1 of 20

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🔍 Key Concepts

• Complete vs. incomplete combustion in oil-fired boilers • Relationship between flame color and smoke/stack appearance • Effects of a pulsating or panting furnace on combustion quality

💭 Think About

• Based on the reddish, pulsating flame, decide whether combustion is efficient or inefficient and what byproducts that produces. • Think about what color stack gases you would expect if unburned fuel or carbon particles are present in the exhaust. • Compare which choice best matches a condition where the burner is not getting the correct fuel/air mixture.

✅ Before You Answer

• Decide if the described flame suggests too much fuel, too little air, or both varying (unstable draft). • Match an unstable, fuel-rich flame with the most likely visible exhaust color. • Eliminate any options that would correspond to clean, stable combustion in an oil-fired boiler.

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