Centrifugal roof fan
224 - 315 mm, 1 940 - 3 500 m³/h | GRD series
MAICO
Roof fans with EC motor with integrated control for constant pressure or constant volumetric flow
Features
- Pressure or volumetric constancy can be set.
- 2 speed levels for day/night operations.
- Day/night operation can be set using 2 reference volumetric flows or 2 reference pressure levels.
- With automatic fault message.
- Adjustments can be undertaken without pressure or volumetric flow having to be measured.
- Housing easily detachable for cleaning purposes.
- Galvanised protective grille on the discharge side, protection against accidental contact in accordance with DIN EN 294.
- Sturdy eyebolts enable transport by crane.
- Impeller with blades curved to the rear, dynamically balanced at two levels, in accordance with performance level 6.3, DIN ISO 1940.
- Impeller made of glass-fibre filled polypropylene.
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