Outside Air Intake Clearance From Exhaust
Outside air intakes need separation from exhaust, plumbing vents, flues, loading docks, and contamination sources. This is not a guess field layout item.
What This Helps With
Outside air intakes need separation from exhaust, plumbing vents, flues, loading docks, and contamination sources. This is not a guess field layout item.
Apprentice words: outside air intake clearance, exhaust near intake, louver separation, OA contamination
Common problem: OA intake or louver gets installed too close to exhaust discharge or contamination source.
Check First
What Not To Do
Do not relocate intakes/exhausts in the field without approval. Do not assume distance is okay because it 'looks far enough.'
What can go wrong: OA intake or louver gets installed too close to exhaust discharge or contamination source.
Better Foreman Question
This outside air intake is near [exhaust/vent/loading area]. Who verifies required separation before we install/connect?
Verify With
Source to verify: IMC, ASHRAE 62.1, project drawings, AHJ
Safe wording: Separation distances are code/design/AHJ controlled.