NATE Air Distribution Installation Practice Questions - NATE Air Distribution Installation Specialty Exam

How is available static pressure (ASP) determined when designing a residential duct system per Manual D?

Multiply the blower CFM by the number of return grilles Subtract the pressure losses of components such as the coil, filter, and registers from the equipment's rated external static pressure Add the supply and return duct lengths together Divide the total external static pressure by the friction rate

Correct Answer:

Subtract the pressure losses of components such as the coil, filter, and registers from the equipment's rated external static pressure

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