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- Centrifugal roof fan GRD 31
Centrifugal roof fan GRD 31
Centrifugal roof fan GRD 31
- Air Flow Volume: 3,500 m³/h
- Rotating Speed: 1,480 1/min
- Speed Control: Available
- Rated Voltage: 230 V
- Frequency: 50 Hz
- Maximum Current (Imax): 3.7 A
- Degree of Protection: IP 45
- Insulation Class: B
- Material: Galvanised sheet steel
- Weight: 42.3 kg
- Installation Site: Roof, vertical position
- Nominal Size: 315 mm
- Airstream Temperature: -20 to 50 °C
- Sound Power Level: LWA5: 74 dB(A), LWA8: 76 dB(A)
- Total Efficiency (η): 44.7%
- Efficiency Level (N): 58.1
- Best Efficiency Point (BEP):
- Power (PBEP): 530 W
- Current (IBEP): 3.5 A
- Air Volume: 1,785 m³/h
- Pressure (pBEP): 432 Pa
- Rotating Speed (nBEP): 1,490 1/min
Catalog excerpts
PRODUCTDATA SHEET GRD 31 short description Centrifugal roof fans with EC motor with integrated control for constant pressure or constant volumetric flow, DN 315 Application examples Central air extraction from multiple family living units in combination with Centro exhaust air elements. Article number Technical data Air flow volume Rotating speed Speed controllable Reversing capacity Rated voltage Insulation class Mains cable Installation site Installation position Sheet steel, galvanised Airstream-operated opening/closing Nominal size Airstream temperature at nominal current Airstream temperature at IMax (free inlet sound power level ) Total LWA8, high (housing and free outlet sound power level ) Technical data in energy efficiency optimum (Best Efficiency Point - BEP) Total efficiency η Version: 13.11.2014 - MAICO VENTILATOREN, www.maico-fans.com - We are not responsible for mistakes or printing errors and retain the right to make technical modifications without giving prior notice
Open the catalog to page 1
PRODUCTDATA SHEET Efficiency category Sound power level LWA5 Specific ratio Manufacturer's name Maico Elektroapparate-Fabrik GmbH Official registration number Freiburg registration court, HRB 601233 Information about dismantling and disposal Information about installation, operation and repairs Objects used to measure efficiency which are not described by the Calculation of energy efficiency without housing. measurement category Characteristic curve Version: 13.11.2014 - MAICO VENTILATOREN, www.maico-fans.com - We are not responsible for mistakes or printing errors and retain the right to make...
Open the catalog to page 2
PRODUCTDATA SHEET GRD 31 Dimensions [mm] 1 Clear width 2 External duct diameter 3 Number of holes: 8 Version: 13.11.2014 - MAICO VENTILATOREN, www.maico-fans.com - We are not responsible for mistakes or printing errors and retain the right to make technical modifications without giving prior notice
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