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  • Centrifugal roof fan / extraction
  • Centrifugal roof fan / extraction

GRD with EC Motor

Article: 00021813

Centrifugal roof fan / extraction

The GRD centrifugal roof fans have an EC motor which includes a control for constant volumetric flow and constant pressure. The constancy of the volume and pressure can be set, and there are 2 speed levels for operations during the day and night. Two reference pressure levels and two reference volumetric flows can be used to set the day/night operation.

An automatic fault message is included in each fan. Any adjustments can be made without the volumetric or pressure flow being measured. To facilitate cleaning, the housing can be easily detached. The discharge side has a galvanized protective grille which provides protection against any accidental contact in compliance with DIN EN 294 standards.

Transportation by crane is enabled due to the robust eyebolts. The impeller is constructed from glass-fiber filled polypropylene and has blades which are curved to the rear. These are dynamically balanced at two levels to comply with performance level 6.3, DIN ISO 1940 standards.

Specifications

  • Configuration: centrifugal
  • Function: extraction

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