NCIDQ IDPX Prep Exam questions with correct answers

Why does the HVAC system need to be balanced at the end of a commercial project? A. To verify that air quality levels are within the design specifications B. To detect significant air leaks in ductwork C. To adjust air flow at each device location to meet the criteria in the engineer's design D. To determine that each office is receiving the amount of outside air required by the design Answer The correct answer is C. Balancing the HVAC system is the process of measuring air flow from diffusers and making adjustments to avoid hot and cold spots within a space. It does not measure air quality, ductwork leaks or outside air. P1 Project Coordination The typical chronological order of system installation in new commercial construction is: A. HVAC, Plumbing, Electrical B. Electrical, Plumbing, HVAC