Centrifugal fan R series

EC motorindustrialwith forward-curved blades

Overview
EC centrifugal radial fans of the ZIEHL-ABEGG R series in an optimized spiral housing with forward-curved blades. Available as single-inlet and double-inlet versions for HVAC, device cooling and extraction systems. Energy-optimized design with favourable acoustic behaviour and high volumetric power.

Detailed description
The R series features a spiral housing and a high blade count with forward-curved blades. The geometry is optimized for operation in a spiral housing to deliver high efficiency and low tonal blade noise. Versions cover a wide range of sizes and performance points.

Construction and mounting

• Spiral sheet-metal housing (galvanized).
• Discharge flange and mounting bracket for direct installation.
• Available as single-inlet (one-sided) and double-inlet (two-sided) configurations.

Performance and dimensions

• Frame sizes (examples): single-inlet 180–450 mm, double-inlet 250–450 mm (general availability also includes other sizes).
• Volume flow rates up to approx. 9,000 m³/h (depending on version).
• Static pressures up to approx. 1,100 Pa (depending on version).

Motor technology & electronics

• External-rotor EC motors.
• ECblue technology with integrated controller tuned to the fan.

Features & particulars

• High volumetric power density and energy efficiency.
• Reduced tonal blade noise due to high blade count.
• Housing with discharge flange and fastening bracket.
• Versions adapted for industrial and HVAC applications.

Applications

• HVAC systems and air handling units.
• Cooling of devices and electronic components.
• Extraction and ventilation systems.
• Packaging and production machinery.
• Cleanroom ventilation modules and workstations.

Technical specifications

• Type: EC centrifugal (radial) fan in spiral housing.
• Housing material: galvanized sheet metal (spiral housing).
• Nominal sizes: examples 180–450 mm (single-inlet), 250–450 mm (double-inlet).
• Volumetric flow: up to ~9,000 m³/h (depending on version).
• Static pressure: up to ~1,100 Pa (depending on version).
• Mounting: on discharge flange or with mounting brackets.
• Impeller: forward-curved blades, high blade count for low noise.
• Drive: external-rotor EC motors with ECblue and integrated controller.