The solenoid valves in the fuel oil supply...

Question 1 / 270705eccefa3bacbc34ba4d47c4c

Question 1 of 270705eccefa3bacbc34ba4d47c4c

The solenoid valves in the fuel oil supply line to an automatically fired auxiliary boiler, are automatically closed by __________.

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Question 1 of 27070

The solenoid valves in the fuel oil supply line to an automatically fired auxiliary boiler, are automatically closed by __________.

🔍 Key Concepts

• automatic boiler safeties on fuel systems • relationship between steam pressure and boiler firing rate • what condition is dangerous if fuel continues but demand/load is low

💭 Think About

• Ask yourself: in what situation would it be unsafe to keep sending fuel to the furnace of an automatically fired boiler? • Which of these conditions would indicate that the boiler is already producing enough (or too much) steam? • Which options are more about water/feed conditions or air conditions rather than overall boiler pressure and load?

✅ Before You Answer

• Identify which choice represents an over-pressure safety condition. • Eliminate any choices that do NOT directly indicate the boiler is already making too much energy. • Confirm which condition should cause the burner to trip and fuel valves to shut in order to protect the boiler.

Question 1 of 27070

The solenoid valves in the fuel oil supply line to an automatically fired auxiliary boiler, are automatically closed by __________.

a decrease in feed temperature

high furnace air pressure

high steam pressure

low steam pressure