While ASHRAE Standard 62-1989 tells designers how to devise ventilation systems that provide "acceptable indoor air quality," many don't understand how to apply the standard's instructions to actual applications. Recent issues of the Engineers Newsletter have attempted to interpret ASHRAE Standard 62, "Ventilation for Acceptable Indoor Air Quality," and offered general suggestions for compliance, particularly with respect to ventilating multiple-space systems. This issue offers practical examples that demonstrate how to design an ASHRAE Standard 62-compliant ventilation system for each of four different HVAC system type/space combinations. Of course, ultimate responsibility for interpretation and compliance rests with the individual designer and installer.

Table of Contents

• A Quick Review
• A Few Design Considerations
  • Example 1: Single-Space CV System
  • Example 2: Four-Space CV/Makeup Air System
  • Example 3: CV Multiple-Space System
  • Example 4: VAV Multiple-Space System
• Contaminant Source Control Fundamentals
• Determining Space and System Ventilation Requirements
• In Conclusion