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

A fuel-oil return line from a burner or pump to the supply tank shall be installed how?

With a shutoff valve at the tank top and another at the burner. Tied into the tank vent so excess oil can breathe. Discharged onto the boiler-room floor drain. With no valves or obstructions, entering the top of the same tank.

Correct Answer:

With no valves or obstructions, entering the top of the same tank.

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