When air handlers first enable economizer mode, overlooked control sequences can trigger temperature and humidity spikes that pose real risks to critical environments.
This project forced ES NEWS commissioning columnist Miles Ryan to think far deeper than he ever wanted to about the concepts of interlocks of where they can go wrong.
ANSI/AMCA Standard 500-D establishes uniform laboratory methods for evaluating the performance of dampers in terms of air leakage, pressure drop, dynamic closure, operational torque, and more.