SC Boiler Installation Practice Questions - South Carolina Boiler Installation Contractor Examination Exam

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A drip-leg thermodynamic trap is cool to the touch and the coil or main downstream is waterlogged. What is the most likely trap condition?

The boiler safety valve is lifting The burner flame scanner has failed The trap is failed open and blowing steam The trap is failed closed, is undersized, or is installed above the drip so condensate cannot drain

Correct Answer:

The trap is failed closed, is undersized, or is installed above the drip so condensate cannot drain

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