Rosenberg’s new D-Series efficiency-boosting airflow guide housing, designed specifically for Rosenberg I-series impellers, increases efficiency by an additional 12+%. In normal operation of a 560-mm backward curved fan, this added efficiency can result in nearly $800 in energy savings per year. The guide housing also reduces fan noise by up to 4 dB, making it an excellent choice for air handling units.

Combining the new D-Series guide housing with new high-efficiency, low-noise I-Series backward curved fans creates significant advantages for OEMs and system designers. Depending on fan size and operating point, our new impeller fans alone increase efficiencies by up to 11% while reducing noise levels by more than half compared to older designs.

The Rosenberg I-Series volume-flow oriented impeller features aluminum construction with five profiled backward-curved blades providing improved efficiency and less noise than earlier designs or competitive products.

The new I-impeller fan comes standard with Rosenberg Generation 3 or Gen 3+ EC motors which are 30% more powerful than the Gen 2 equivalent. Gen 3 motors allow for a wide range of input voltages, from 200 to 480 VAC, 50 or 60Hz. They are 100% speed controllable with integrated motor protection and soft start. ModBus RTU Interface is also integrated.

The motor housing is made of die cast aluminum. Protection class IP54 and insulation class F is standard.

For more information, or to place an order, contact Rosenberg USA by phone at (704) 893-0883; fax (704) 882-0755 or e-mail sales@rosenbergusa.com.

About Rosenberg

The Rosenberg family of companies is headquartered in Künzelsau, Germany and employs more than 1,400 individuals worldwide. Rosenberg fans and blowers can be found in HVAC systems, as well as industrial and portable air conditioning; in air cooling for variable frequency drives (VFD), wind power generators and power converters, solar inverters, uninterruptable power supplies (UPS), transformers, heat sinks, fan coils, telecom racks and other industrial equipment; in air handling units and fan filter units (FFU); and in railway, marine, military and avionics equipment. Rosenberg USA is located just outside Charlotte in Indian Trail, N.C.