I. HISTORY OF VENTING AND VENTILATION
    CHAPTER REVIEW
II. THE PURPOSE OF GAS APPLIANCE VENTING AND VENTILATION
    CHAPTER REVIEW
III. BASIC THEORY OF VENTING SYSTEM OPERATION
  Motive Force in Vents
  Need to Remove Water Vapor
  Factors That Affect Venting System Design and Operation
    Vent Gas Temperature
    Heat Loss
    Vent Height
    Vent System Capacity
    Restrictions to Flow
    Ambient Temperature
    CHAPTER REVIEW
IV. TYPES OF GAS VENTS
  Chimneys
  Type B Vents
  Type B-W Vents
  Type L Vents
  Single-Wall Metal Pipe Vents
  Plastic Pipe Vents
    CHAPTER REVIEW
V. VENTING SYSTEMS
  Appliance Categorization
  Single Appliance Natural Draft Type Vent Systems
  Multiple Appliance Natural Draft Type Vent Systems
  Direct Vent Systems
  Special Venting Systems
    Power Venting
    Manifold Venting
    Multiple Venting Systems
    Multi-Story Vents
    Exhaust System Venting
  High-Efficiency Appliance Vents
    CHAPTER REVIEW
VI. CODE REQUIREMENTS FOR VENTING
  Appliances Subject to Venting
  Equipment Not Required to be Vented (Unvented Appliances)
  Vent Materials
  Clearance Requirements
  Sizing Requirements
  Installation Standards
    Pitch
    Length
    Support and Location
    Chimney Connection
    Fireplace
    Dampers
    Protection Against Fire Hazards
  Prohibited Installations
    CHAPTER REVIEW
VII. VENT SIZING AND DESIGN
  Venting Into a Masonry Chimney
  Single Appliance Natural Draft Vent
  Multiple Appliance Vent Systems
    How to Size a Multiple Vent System
  Multi-Story Vent Systems
    Determining Size of Common Vent
    Precautions in Designing Multi-Story Vent Systems
  Power Venting
  Manifold Connectors
  Direct Vent Systems
  Termination of Type B Vents
  Miscellaneous Design Specifications
    Effects of Joints and Turns
    Single-Wall Vents
    Outside Vents
    Vents in High Altitude Locations
    CHAPTER REVIEW
VIII. AIR FOR COMBUSTION AND VENTILATION
  Required Volume of Indoor Air
    CHAPTER REVIEW
IX. INSTALLATION OF VENTS
  Vents and Vent Fittings
    Roof Flashing
    Storm Collar
    "Y" Fitting
    "Siamese" Folding
  Vent Terminals (Vent Caps)
  Installing Vents and Vent Connectors
    Joint Connectors
    Draft Hood Connections
    Support
  General Precautions
    Minimize Lateral Runs
    Avoid Internal Vent Obstructions
    Provide Proper Clearances
    Install Firestops
    Provide Adequate Air
    Do Not Run Vent Through Existing Ducts
    Protection of Vents
  Placing the Appliance Vent in Operation
    Check for Water Leaks
    Check Overall Appearance
    Check Air Supply
    Test for Proper Draft
    Direct Vent Systems
    CHAPTER REVIEW
X. TROUBLESHOOTING
  Chronic Pilot Outage
  Condensation
  Leaking Flue Gases
  Rusting or Corrosion of Burners, Draft Hoods or Vent Pipes
  Spillage of Combustion Products
    Incorrectly Sized Vent System
    Incorrectly Sized Vent Cap
    Excessive Lateral Run
    Too Many Elbows
    Improper Pitch to Lateral Runs
    Exhaust Systems or Furnace Blowers
    Improper Seal Between Furnace and Return Air Duct
    Restriction of the Vent System
    Wind Conditions at the Vent Cap
    Appliances Attached to Multiple Vent
  High-Efficiency Appliances
  Discoloration of Room Walls or Vent System
  Surface Salt Deposits Outside Masonry Chimneys
  Unvented Appliance Problems
    Condensation on Walls, Windows or Baseboards
    Carbon Deposits
    CHAPTER REVIEW
XI. SIZING OF CATEGORY I VENTING SYSTEMS AND TABLES
    CHAPTER REVIEW
REFERENCE SOURCES
GLOSSARY
ANSWERS TO CHAPTER REVIEW