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General principles and guidelines on air intakes and outlets

Issue:

General principles and guidelines on air intakes and outlets

 

Product line:

All Air removal equipment

 

Environment:

All Product models, all serial numbers

 

Cause:

Pressure issues that can occur from improper balance

 

Resolution:

Air Intakes and Outlets

Ventilation systems - air intakes and outlets and rules of thumbs

 

 

Intakes

  • Intakes should be at least 0.15 m (0.5 ft) above the terrain.  In areas with traffic the intake should be at least 5 m (16 ft) above the terrain.
  • The distance between intake, firewalls, and surrounding buildings must be according the rules of the local authorities.
  • Short cutting intake air with used outlet air must be avoided.
  • An air intake should be located in a position where the wind influence on the pressure conditions within the system is limited.
  • Air velocities in the intake openings should not exceed 2.5 m/s (~ 500 ft/min)

Outlets

  • Outlets should go direct out in unrestricted area.
  • Short cuts with intake air, window openings and residence areas must be avoided.
  • The distance between outlet, firewalls and surrounding buildings must be according the rules of the local authorities.
  • An air outlet should be located in a position where the wind influence on the pressure conditions within the system is limited.
  • The air velocity through the outlet should not exceed 3 - 15 m/s (~ 500 - 3000 ft/min).

 

 

 

 

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