DV fans

DV... / DH... - Roof fans vertical or horizontal outlet
 
·    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.

 Application areas:
 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

 We distinguish between...
  ... Type DH with horizontal outlet     = for less polluted air
  ... Type DV with vertical outlet         = for heavily contaminated air

 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:

 Vertical type DV:
 Casing  made  of  seawater-resistant  aluminium  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.
 
 Horizontal type DH:
 Cover  up  to  size  500 made of seawater-resistant aluminium, from size 560 made of galvanized sheet steel.

 Base  frame  with  bolts for tightening of inlet accessories and rectangular inlet cone made of  galvanized sheet steel; from size 560 to 900 additionally plastic coated.

  Coating:
  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.
_____________________________________________________________________________________________________

 Impellers:

 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.
_____________________________________________________________________________________________________

 Motors:

 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.

  UL-Permit:
  For 60Hz Types (possible on request)
_____________________________________________________________________________________________________

 Electrical connection:

 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!

  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.

 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 (DV / DH)
 ·    Documentation
_____________________________________________________________________________________________________

 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 ∆pfa 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 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.

 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.

DV 190-2 E.3BE to DV 400-6-6 D

Roof fans vertical outlet

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.

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.

DV 450-4 D to DV 450-6-6 D

Rosenberg radial roof fans DV / DVW Series, vertical outlet

Base frame with bolts for tightening of inlet accessories and rectangular inlet cone made from galvanized steel; from size 560 900 additionally plastic coated. Rain hood and square casing made from seawater resistant aluminium. Motor supporting plate with integrated protection guard made from plastic coated round bar steel up to size 710. Motor support made from welded and plastic coated rectangular tube as well as bird protection guards with size 800 and 900.

Fans are equipped with backward curved high efficiency plastic impellers up to size 450, from size 450 W up to size 710 W made from seawater resistant aluminium, mounted onto the rotor of a speed controllable external rotor motor. two levels according to quality level G 2.5 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 2.5 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.

Documentation :
Declaration of incorporation and operating instruction are according to Machinery Directive 2006/42/EC, CE identification in accordance to EMC-directive 2004/108/EC and Low Voltage Directive 2006/95/EC. Motor operating instruction is available from motor manufacturer.

Picture of roof fans DV