Precise L850​ Advanced Active Compensated
Stairwell Pressurization Controller​
UL864​ Listed to​
MORE INFO Injection​
Point​
Regulator​
Zone Control​

The ADVANCED ACSP (Active Compensated Stairwell Pressurization) System from LFSystems takes how you control stairwell pressurization in taller or more complicated building applications to a whole new level. The L864 is now used to maintain a constant positive pressure in the duct system. The Advanced ACSP expands functionality by adding an L850 controller and modulating damper to each injection point. The natural pressure differential between the top and bottom of a taller building can be overcome by creating multiple “zones” in the stairwell. This allows the Advanced ACSP to dynamically balance the system and ensure the minimum pressure is maintained without excessive in other parts of the stairwell.
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