The photoelectric cell installed as part of...

Question 1 / 270705eccefa0bacbc34ba4d46ebd

Question 1 of 270705eccefa0bacbc34ba4d46ebd

The photoelectric cell installed as part of the combustion safety controls of an automatically fired boiler will __________.

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Question 1 of 27070

The photoelectric cell installed as part of the combustion safety controls of an automatically fired boiler will __________.

🔍 Key Concepts

• Photoelectric cell (flame scanner) purpose in an automatically fired boiler • Relationship between flame presence and the fuel/safety circuit • Difference between sensing flame and controlling pressure/modulation

💭 Think About

• In a boiler safety system, what must happen to the fuel circuit if the flame is NOT present? How does the photoelectric cell help with this? • Which option describes a device whose primary job is to detect whether the burner flame exists, not to regulate pressure or firing rate? • Look at answers that mention the effect of sensing a FLAME vs. FLAME FAILURE. Which action would increase safety if the flame went out?

✅ Before You Answer

• Verify that a photoelectric cell is used as a flame detector, not a pressure controller or modulating device • Check which answers describe sensing vs. acting on the control circuit, and whether that action is safe when flame is lost • Confirm that in a safe design, loss of flame must interrupt (open) the fuel/control circuit, not allow it to stay energized

Question 1 of 27070

The photoelectric cell installed as part of the combustion safety controls of an automatically fired boiler will __________.

open the control circuit upon sensing an intense flame

control the modulating pressure control circuit

sense light from the burner flame

close the control circuit upon sensing a flame failure

Question 1 / 270705eccefa0bacbc34ba4d46ebd

Question 1 of 270705eccefa0bacbc34ba4d46ebd

The photoelectric cell installed as part of the combustion safety controls of an automatically fired boiler will __________.

Back

Question 1 of 27070

The photoelectric cell installed as part of the combustion safety controls of an automatically fired boiler will __________.