Free running impeller with 7 backward-curved blades in frame sizes 225 to 1,120 mm. Impeller made of sheet steel with surface protection provided by powder coating. Version with hub (taper lock or fixed hub) and inlet nozzle with measurement device for volume flow measurement. Volume flow rates up to around 110,000 m³/h free blowing, max. static pressure increase up to 2,500 Pa possible. GR module for compact installation in customer applications/devices for horizontal and vertical air feed. ER built-in fans e.g. for vibration-damped use in central air-conditioning units with horizontal air feed.
Properties & special features:
Impeller with rotating, non-fluted diffuser for high efficiency levels and favourable acoustic characteristics. Also available in ATEX version. Impeller made of aluminium when used with external rotor motors.
External rotor motors:
- ECblue EC technology with integrated controller matched to the fan
- AC technology