Which situation should prompt reviewing load calculations and scheduling when diagnosing a large-building HVAC system?

Prepare for the HVAC 403A Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Matching the design assumptions to actual building usage is essential. In a large building, the HVAC load depends on how many people are present, what equipment is running, how spaces are used, and the system’s scheduled operation. When occupancy and usage patterns diverge from what the load calculations assumed or from the schedule, the system can be delivering too much or too little heating and cooling. That mismatch often leads to comfort problems and energy waste, so it’s a clear cue to review and update both the load calculations and the scheduling to reflect current reality. If occupancy truly matches the schedule, there’s no misalignment to fix. Running at maximum capacity or having no occupants are different situations that don’t specifically indicate an alignment issue with occupancy-based calculations and schedules.