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

In a closed hydronic heating system, what is the main job of the expansion tank?

To add dissolved oxygen so the boiler water stays fresh. To raise static pressure to the relief-valve setting on every start. To store domestic hot water for kitchen use. To absorb the increase in water volume as the system is heated.

Correct Answer:

To absorb the increase in water volume as the system is heated.

Access more questions from this quiz

Continue to NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam for more practice questions and the full quiz experience.

Access More Questions