Exhaust Fan Backdraft Damper
Exhaust fans need backdraft dampers to prevent reverse airflow when fan is off.
Stop if
- For this exhaust fan, is a backdraft damper required? And what type - gravity or spring-loaded?
Watch out
- Don't install exhaust fans without backdraft dampers where required. Don't use wrong damper type for the application.
Check
- Is a backdraft damper shown on the drawing?
- What type - gravity or spring-loaded?
- Is it rated for the exhaust temperature?
Steps
- Is a backdraft damper shown on the drawing?
- What type - gravity or spring-loaded?
- Is it rated for the exhaust temperature?
Say this to your foreman
For this exhaust fan, is a backdraft damper required? And what type - gravity or spring-loaded?
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