SC HVAC Contractor Practice Questions - South Carolina HVAC Contractor License Exam

What is the proper installation method for flex duct per SC's mechanical code?

Stretch to maximum length and let it sag Support at manufacturer-specified intervals, keep fully extended without excessive sags, and use proper connections Coil excess duct in the attic Tape all connections without mechanical fasteners

Correct Answer:

Support at manufacturer-specified intervals, keep fully extended without excessive sags, and use proper connections

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