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

Primary-secondary hydronic piping uses closely spaced tees mainly to do what?

Create a hydraulic bridge so the boiler circulator and the system circulator do not fight. Increase chimney draft by injecting air into the flue. Raise oil-tank vent pressure to 10 psig. Replace the ASME relief valve with a pair of tees.

Correct Answer:

Create a hydraulic bridge so the boiler circulator and the system circulator do not fight.

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