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Stairwell Pressurization - New Standard

Traditional solution | Application Description
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New Standard
The main purpose of the stairwell pressurization fan is safety. However, over pressurization can make it difficult to open doors onto the stairwell landings reducing the safety factor greatly.

By using a pressure sensor along with a drive, constant design pressure can be maintained in the stairwell as the number of doors opening and closing varies. The drive has the ability to speed up or slow down the fan rapidly, which safely compensates for the opening of doors without creating the problem of over pressurization. Separate pressure setpoints can be established for fire and normal modes of operation.

In the event of fire, the safety of the evacuation route is automatically ensured eliminating the need for the mechanical pressure relief damper.



Pressurized Stairwell with Automatic Compensation for Door Openings