DVS... - Roof fans vertical outlet and with 50 mm sound absorbing casing
· easy to install
· weatherproof housing
· Motor protection by thermal contacts
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 roofs. The broad roof-fan product rangeoffers for each application the optimal solution.
Garage / Offices / Bars / Greenhouses / Skyscrapers / Hotels / Industrial buildings / Basement rooms / Playschool / Cinemas / Parking facilities / Warehouses / Nursing homes / Schools / Sports halls / Supermarkets / Workshops / Residential houses / Fitness centers / Inflatables
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.
Casing made of seawater-resistant aluminium with integrated 50mm sound absorbing cover.
Base frame with bolts for tightening of inlet accessories and rectangular inlet cone made from galvanized steel; from size 560 to 900 additionally plastic coated.
Standard Coating RAL 7030 / RAL 7035 or other coating posible on request against extra charge.
Bird Protection Grill:
A coated grill RAL 9005 (black), ensures an optimal protection. Inlet grill possible on request.
Up to size 400:
Backward curved impellers made of plastic. Impellers are mounted directly to the rotor of the external rotor motor and are balanced dynamically at two levels together with the rotor according to quality level G 6.3 to DIN 1940.
From size 450 to 800K:
Backward curved impellers made of aluminium. Impellers are mounted directly to the rotor of the external rotor motor and are balanced dynamically at two levels together with the rotor according to quality level G 6.3 to DIN 1940..
Used are external rotor motors with IP 44/54 according to DIN EN 60034-5 with moisture protection, ball bearing mounted and with thermal contacts as motor protection.
Up to size 310L:
Motor protection class IP 44.
From size 355:
Motor protection class IP 54.
The drive h as due to an external rotor motor a space saving, compact and attractive design. The motor is fitted within the impeller, which enables the best possible cooling. For this reason a 100% variable speed control can be guaranteed.
V-belts, additional tension bars and motor mounting devices are not necessary. Only well-dimensioned ball-bearings, fitted on both sides with long life time grease are used. Both ball-bearing seats are ground to superfinish in one work process to eliminate any vibrations. External rotor motors have extremely low starting currents. The windings comply to isolation class F. In addition the windings have a standard moisture impregnation.
The motors are equipped with a built-on terminal box in protection class IP 54 with easy access for electrical connection after removal of the rain cover.
Air volume control:
For more information see accessories!
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.
5-speed control unit:
230V à RTE
400V à RTD
Infinitely variable control unit:
230V à ED / REE
400V à RED
400V à via Frequency converter (available on request)
WARNING: Base frequency must correspond to nominal frequency
2-speed control unit:
(see reference „ multi-stage-drive)
230V à eigther high or low speed is possible, dependering on thee connecting in the terminal box
(Wiring diagram 01.020).
400V à MSD 2
Scope of delivery:
· Roof fan (DVS)
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 ∆pfa as a function of the air flow.
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 metre is calculated approximately by deducting 7 db(A) from the "A" weighted sound power level. It is importmant 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.
Rosenberg fans have a specific (pressure-) ratio < 1,05 (pressure < 5000 Pa).
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..
Roof fans vertical outlet with integrated 50mm sound absorbing cover
Base frame with bolts for tightening of inlet accessories and rectangular inlet cone made from galvanized steel. Rain hood and square casing made from seawater resistant aluminium. Motor supporting plate with integrated protection guard made from plastic coated round bar steel. The casing with integrated 50mm sound absorbing cover.
Fans are equipped with backward curved high efficiency plastic impellers, mounted onto the rotor of a speed controllable external rotor motor. Two levels according to quality level G 6.3 DIN/ISO 1940. Motor closed, protection I class IP 44/54 with protection against humidity and thermal contacts wired in windings from size 355.
Maintenance free ball bearings, closed on both sides, sealed for life. Easy access to the terminal box (not connected) in IP 54 under rain hood. Sizes 800 and 900 with backward curved high efficiency impeller, made from seawater resistant aluminium. Balanced on two levels according to quality level G 6.3 DIN/ISO 1940. Impeller installed on motor shaft of an IEC standard motor, version B5. Motor in protection class IP 54, mounted under a removable hood component outside the air stream. Easy access to terminal box in protection class IP 55 after removal of the hood component.
Reference to Directives:
Declaration of incorporation and operating instruction are according to Machinery Directive 2006/42/EC, CE identification in accordance to EMC-Directive 2014/30/EU, Low Voltage Directive 2014/35/EU and the Ecodesign-Directive 2009/125/EC.
For further information, please click the model below for detail.
Picture of Roof fans DVS