Chapter 7 ensures fuel-burning equipment gets enough air to burn safely and vent correctly.
At a Glance
| Lens | Notes |
|---|---|
| Chapter focus | Combustion Air |
| Why it matters | Chapter 7 ensures fuel-burning equipment gets enough air to burn safely and vent correctly. |
| In the field | This chapter shows up in furnace closets, mechanical rooms, boiler rooms, replacement equipment projects, and any job where tightening the building envelope changes combustion behavior. |
Core Fundamentals
- Combustion air is a safety issue before it is a comfort issue.
- Replacement equipment in tighter buildings often turns an old 'working' setup into a draft and spillage problem.
- You have to consider room volume, opening size, source of air, and interaction with exhaust systems.