Diffuser Plenum Fan, AC Motor Direct Drive, General Duty
Compact, direct drive plenum fan featuring a unique, AC motor, high-efficiency backward curved radial diffuser wheel. For clean air applications.
Clean Air Ventilation Applications: Factory- or Site-Built Air Handling Units, Roof Top Ventilation Systems, Heat Recovery Systems, Data Centers.
Clean Air up to 15,300 CFM, and 11.6" SP.
AMCA Arrangement 4 SWSI: Single Width Single Inlet.
Steel Backward Curved Radial Diffuser Wheel. Diameters 14" to 22".
Direct Drive. Premium Efficiency, Fixed or Variable Speed, 120 to 480VAC Single or Three Phase, NEMA Enclosure and Frame Size Motors.
-20°C (-4°F) to 80°C (176°F).
Galvanized Inlet Cone with Pressure Tap.
Plenum Plate Size 17" H x 17" W to 29" H x 29" W.
Steel Sheet, Gray Powder-Coated Finish. Indoor / Outdoor, Heavy-Duty.
Not available for this series.
ISO-9001 Certified Shop. AMCA Accredited In-House Test Laboratory.
Best Efficiency Point
Inlet Area Sq. Ft.
Fan Selection Tool
Our online fan selection tool will help you identify a suitable model for your application's requirements.
Peerless' Synergy PLENUMclassic series features a unique radial diffuser wheel offering up to 83% total efficiency, ultra-low sound levels, lower horsepower motors, and very high durability.
With larger diameter front- and backplates creating a unique diffusing area to smooth out discharge airflow, our proprietary diffuser wheels convert kinetic energy into pressure energy at very high efficiencies and very low noise levels.
For low-turbulence inlet airflow and balanced rotation, our inlet cones are stamped or rolled from single sheets, free of seams and welds.
Indoor/outdoor, welded steel frames keep motors, drivetrains, and wheels in alignment longer than formed sheet frames, resulting in longer maintenance intervals.
Open plenum fans are designed for installation into existing field-erected or factory-built air handling units, pressurizing the air plenum in which the fan operates directly.
Direct drive, TEFC motors are fixed-mounted onto a welded base frame. No belt tensioning or bearing adjustments are necessary.
Peerless' Synergy PLENUMclassic series is available in Arrangement 4 SWSI.
Arrangement 4 SWSI
AMCA Arrangement 4 SWSI utilizes a direct-drive motor mounted onto a base frame. The fan impeller is overhung on the motor shaft and does not need separate bearings.