Protect building occupants with the best guidance for HVAC system installation and maintenance! HVAC systems make buildings more livable...unless there's a fire. Then they have the potential to quickly spread smoke, hot gases, and flames to areas far beyond the fire's origin. They can also supply air that enhances fire development. Reduce the risks with the new, improved NFPA 90A! This critical Standard prescribes requirements for fire protection of air handling systems to restrict the spread of smoke and fire, maintain the fire-resistive integrity of building components and elements, and minimize ignition sources and combustibility of system elements. Essential new provisions for installers include: Updated duct rules New parameters for removal of abandoned material Added requirements for limited combustible wires and cables in concealed and plenum spaces Make sure you're aware of the dangers posed by HVAC system - and the right ways to mitigate hazards - with this revised edition. NFPA 90A Standard for the Installation of Air-Conditioning and Ventilating Systems Chapter 1 Administration Chapter 2 Referenced Publications Chapter 3 Definitions Chapter 4 HVAC Systems Chapter 5 Integration of a Ventilation and Air-Conditioning System(s) with Building Construction Chapter 6 Controls Chapter 7 Acceptance Testing Annex A Explanatory Material Annex B Maintenance Annex C Informational References Formal Interpretations Index