DVWNS... - Roof fans vertical outlet with IEC-standard motor and 50mm sound absorbing casing
· high air stream temperatures possible (max. 120°C)
· easy to install
· weatherproof housing
· Motor protection by thermal contacts
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Features and Constructions:
The Rosenberg roof fans are used for ventilation of department stores, supermarkets, factories, swimming pools, kitchens, dining halls, warehouses, garages, farms and stables. The fans are suitable for mounting on a flat or any shaped roof. The fans can be operated up to 120°C (80°C if speed controlled) as the motor is out of the air stream.
Application areas:
Garage / Bakeries / Bars / Kitchens / Industrial buildings / Residential houses / Workshops / Parking facilities / Warehouses / Skyscrapers / Hotels / Basement rooms / Paintshop / Nursing home / Schools / Supermarkets /
Classification of the fan series:
NRVU = Non Residential Ventilation Units
UVU = Unidirectional Ventilation Units
Reference to Directives:
Declaration of incorporation and operating instruction are according to Machinery Directive 2006/42/EC, CE dentification in accordance to EMC-Directive 2014/30/EU, Low Voltage Directive 2014/35/EU and the Ecodesign-Directive 2009/125/EC.
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Casing:
Side Panels for vertical discharge with 50mm sound absorbing and motor hood made of seawater resistant aluminium.
Base frame
Up to size 630: Baseframe with integrated inlet cone made of galvanized steel.
From size 710: Baseframe with integrated inlet cone made of galvanized steel and plastic coated.
Coating:
Standard Coating RAL 7030 / RAL 7035 or other coating possible on request against extra charge.
Bird Protection Grill:
A coated grill RAL 9005 (black), ensures an optimal protection. Inlet grill possible on request.
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Impellers:
The impellers with 8 backward curved blades are made of sheet aluminium (AlMg3) and are statically and dynamically balanced with the hub according to quality standard G 6.3 to DIN 1940.
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Motors:
Standard IEC three phase motors in size IMB5, protection class IP55, 1~230V/50Hz resp. 3~400V/50Hz. Isolation class F. Standard fan´s motors are suitable for voltage control. Motors for frequency control are available as well as single and double speed motors.
Up to size 450 and 500D [400V]:
Motors are suitable for voltage control in size IMB5, protection class IP55, 1~230V/50Hz resp. 3~400V/50Hz. Insolation class F. Motor protection by thermal contacts.
Size 500E [230V] and from size 560:
IEC-standard motors in size IMB5, protection class IP55, 1~400V/50Hz. Isolation class F. Motor protection by PTC resistors.
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Electrical connection:
The wiring box of the motor is easily accessible. The motor has to be connected according to the wiring diagram and in accordance with valid regulations and local laws. In case of operation with frequency converter please check the operation manual.
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Air volume control:
For more information see accessories!
Reference:
Please note the directives 1253/2014/EU (Lot 6) applying from 01.01.2016 for the ventilation units (ventilation fans).
Keyword: „Multi-stage drive" (at least 3 fixed speeds, as well as speed 0 („off"). Suitable control and regulation devices are available as accessories.
Up to size 450 and 500D [400V]:
5-speed control unit
230V à RTE
400V à RTD
Size 500E [230V] and from size 560:
Infinitely variable control unit
400V à via Frequency converter (available on request)
WARNING : corner frequency must correspond to the nominal frequency
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Scope of delivery:
· Roof fan (DVWNS)
· Documentation
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Important Notes:
Air performance curves:
The performance curves for these fan types have been measured on a inlet side chamber testing platform according to DIN ISO EN 5801 in mounting position A (free inlet; free outlet) and are valid for air with a density of 1.2 kg/m³ and indicate the pressure increase Dpfa as a function of the air flow.
Noise levels:
The bordered values printed in the performance curve diagrams show the A weighted LWA8 sound power level (fan outlet).
Determination of A-weighted LWA5 sound power level at fan inlet according to DIN 45 635, Part 38 is calculated as follows:
LWA5 [dB(A)] = LWA6 [dB(A)] -3dB
The "A" weighted sound pressure level LPA at a distance of 1 meter is calculated approximately by deducting 7 db(A) from the "A" weighted sound power level. It is important to note that the reflection and room characteristic as well as natural frequencies influence the sound pressure levels a different way. The octave sound power level LWA at octave medium frequency you can find on the table on each fan type page.
Erp-Information:
Rosenberg fans have a specific (pressure-) ratio < 1,05 (pressure < 5000 Pa).
Service life:
For maximum service life of Rosenberg products please beware of the maintenance hints on the manual for each product type.
Recycling and disposal:
For recycling and disposal of Rosenberg products comply with applicable locally requirements and regulations.
For further information, please click the model below for detail.
Picture of roof fans DVWNS
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