NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam

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A hydronic boiler relief valve weeps every time the system reaches operating temperature, then reseats when the water cools. The fill pressure is correct. What is the most likely near-boiler cause?

The expansion tank is waterlogged, undersized, or isolated. The chimney is 5 feet taller than the Type B minimum. The oil fill pipe is 3 feet from a window. The gas sediment trap nipple is too long.

Correct Answer:

The expansion tank is waterlogged, undersized, or isolated.

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