A continuous outside air supply fan serving a screening room operates via a control schematic and run conditions incorporating a supply fan, a variable frequency drive controlled via current transducer, a motorized damper for outside air intake, and a filtration bank with MERV 8 pre-filters and MERV 13 final filters. Differential pressure transducers are provided to monitor filter loading and supply riser pressures, with set points coordinated by the test and balance contractor. Interlocks mandate that the inlet air damper opens prior to fan start and closes after fan stop, while system safety controls trigger fan shutdown upon smoke or combination smoke-fire damper activation.
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