NFPA发布的代码和标准在NFPA的许可下显示为只读，仅供本系统使用。NFPA材料不得下载、打印、复制或转让。本手册版本出版时，NFPA和本手册版本的贡献者提供信息和意见，但不试图提供工程或其他专业服务。使用行业认可的暖通空调护理标准，保护生命和财产免受火灾、烟雾和火灾或类似条件产生的气体的伤害。NFPA 90A涉及空调和通风系统的施工、运行和维护的各个方面- -包括过滤器、管道和相关设备。设计师、承包商和业主通过使用最新规定，在消防方面获得了更大的保证。这些要求用于防止烟雾迁移，并降低25000立方英尺以上建筑或三层以上III、IV和V型建筑的强制通风系统发生火灾的可能性。它也适用于其他适用NFPA®标准未涵盖的其他建筑物和构筑物。NFPA 90A涉及:暖通空调系统、部件和空气分配通风和空调系统与建筑结构控制的集成，包括布线、手动控制、防烟挡板和自动控制烟雾探测验收测试NFPA 90A在当今建筑中提供充分的防火方面起着不可或缺的作用。 遵守规范，确保暖通空调系统防火安全。

Codes and standards published by NFPA are displayed as read-only under license from NFPA solely for use within this system. NFPA material may not be downloaded, printed, reproduced, or transferred.This Handbook Edition is published with the understanding that the NFPA and the contributors to this Handbook Edition are supplying information and opinion but are not attempting to render engineering or other professional service.Use the industry-approved standard of care for HVAC to protect life and property from fire, smoke, and gases resulting from fire or similar conditions. NFPA 90A addresses every aspect of the construction, operation, and maintenance of air conditioning and ventilating systems -- including filters, ducts, and related equipment.Designers, contractors, and owners gain greater assurance in fire protection by using the latest provisions.Requirements are used to prevent the migration of smoke and reduce the potential for fire in forced air systems in buildings that are over 25,000 cubic feet or Types III, IV, and V construction over three stories in height. It also applies to other buildings and structures not covered by other applicable NFPA® standards.NFPA 90A addresses:HVAC systems, components, and air distributionIntegration of a ventilation and air-conditioning system(s) with building constructionControls including wiring, manual control, smoke dampers, and smoke detection for automatic controlAcceptance testingNFPA 90A plays an integral role in providing adequate fire protection in today's buildings. Stay up-to-code and keep HVAC systems fire safe.