This second public review draft is a proposed revision of Standard 111-1988, which provides uniform procedures for measuring, testing, adjusting, balancing, and evaluating and reporting the performance of HVAC systems in the field. It applies to both the air-moving and hydronic types of building HVAC systems and their associated heat transfer, distribution, refrigeration, electrical-power and control subsystems. It is intended for use by building engineers, operators, users, manufacturers, and installers.