Zero Air Control Systems

Zero Air Control Systems Zero has designed and tested other systems against air leakage to demonstrate the effectiveness of these products and materials at higher pressures. They have been tested for air infiltration (positive pressure) where high pressure pushes the door against the seal, and also for the more onerous air exfiltration (negative pressure) where high pressure pushes the door away from the seal. By specifying a complete “Air Control System” you are assured that the components installed for head, jamb and sill will perform properly together.

 

HURRICANE PROTECTION SEALS (DADE COUNTY)

Properties in Miami-Dade County, Florida are subjected to seasonal hurricane force winds and Zero offers a tried and tested set of seals for such situations. This is known as the “Dade County set”. To maximise protection, doors should be designed to open out which means that strong winds will force the door against the seals. The Dade County Set has been tested under positive pressure to a wind velocity of 135mph and protects against wind-driven water infiltration.

 

SAFE HAVEN SEALS

In response to heightened security requirements, Zero has introduced a set of “Safe Haven” room seals. To maximise protection, doors should be designed to open out of the safe haven and the seals should be fitted inside the safe haven. This means high pressure will push the door against the seals. This set is particularly effective against airborne diseases and spores.

The Safe Haven set has been tested under positive pressure to a wind velocity of 100 mph (1223 Pascals) and resulted in an air leakage of only 2.8 CMH/LMC (Cubic Metres per Hour / Linear Metre of frame Crack). The air leakage is much lower if the wind velocity is reduced.

Please refer to Zero International for CAD drawings, data sheets and fixing instructions.

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