ISO/DIS 5222-3

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ISO/DIS 5222-3 refers to a Draft International Standard (DIS) developed by the International Organization for Standardization (ISO). Specifically, it focuses on testing and calculation methods for the annual performance factor of sensible heat recovery ventilators, a type of heat recovery ventilator governed by the ISO 16494 standard. This standard is part of a larger series, ISO/NP 5222, and is designed to provide a standardized way to evaluate the efficiency of these energy-efficient ventilation systems.