EKAD

EKAE... / EKAD... - Duct fans with forward curved centrifugal impellers

• easy installation (DIN standard flange)
• can be installed in any position
• extremely low starting current
• motor protection by thermal contacts
• speed is variable using auto transformers

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Description:

The Rosenberg duct fans provide a distinctive advantage of axial fans,  i.e.  straight airflow and easy  installation,  high pressure stability, low noise level and high efficiency of the centrifugal fan.


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

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.
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Casing:

Casings are made of galvanized sheet steel, formed as a rectangular duct for direct installation into air ducts. Mounting possible in any position. Standard flanges are installed  on inlet and outlet side.  This allows simple and quick connection to the duct section.  Optional  flexible  connectors  and  flange are available. The complete motor impeller unit can be easily detached for cleaning.

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Impellers:

The  forward  curved  impellers  are  directly  mounted  to  the  rotor  of  the  external  rotor  motor  and  are  balanced dynamically together with rotor according to quality level G2.5 to DIN1940.

Size EKAE 200-2: backward curved centrifugal impeller made of plastic

From size EKA 200-4: forward curved centrifugal impeller made of galvanized sheet steel

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Motor and motor protection:

All Rosenberg fans are  equipped with  direct driven  external rotor motors.  All our fans have motor protection  through thermal contacts in the motor windings as standard. The motors apply to protection class IP44/IP54.

Size EKAE 200-2    = motor protection class IP44
From size EKA 200-4     = motor protection class IP54

The drive has 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-dimensions ball-bearings,  fitted on both sides and  life  time  greased are  used.
Both ball-bearing seats are  ground to high  precision 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.

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Electrical connection:

The  motors  are  fitted  with  an  outgoing  cable.  The  electrical connection  can be made via an IP44 terminal box, which is supplied loose.

Direction of rotation
Direction of rotation is clockwise, viewed from the inlet side.

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Installation:

The  duct  fans  are  mounted with the desired accessory (duct silencer, filterbox, etc) in the ductwork.
To avoid  possible  vibration  onto the channel system,  we recommend the use of flexible connections (optional).

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Air volume control:
For more information see accessories!

5-speed control unit:    
230V    à RTE …
400V    à RTD …

Infinitely variable control unit:
230V    à ED / REE …
400V    à RED …
400V     à Frequency converter / WARNING: up to max. 50Hz

2-speed control unit:
400V     à MSD 2

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Scope of delivery:

·   Duct fan (EKAE / EKAD)
·   Terminal box (loose)
·   Documentation

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Important notes:

Air performance curves:
The performance curves for these fan types have been measured in mounting position D (installed on the pressure side and open on the suction side)  and  show  the  total  pressure  increase ∆pt as a function of the air flow.  The  dynamic pressure ∆pd2 refers to the flange cross section at the outlet side of the fan.  

Noise levels:
The bordered values printed in the performance curve diagrams show the "A"  weighted LWA6 sound power level at the outlet side in duct systems. The relative octave sound power level LWArel at octave medium frequency you can find on type page.

Classification of the fan series:
NRVU    = Non Residential Ventilation Units
UVU    = Unidirectional Ventilation Units

Erp-Information:
Rosenberg fans have a spezfic (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.

Duct fans with forward curved impellers

Casings are made of galvanized sheet steel, formed as a rectangular duct for direct installation into air ducts. Mounting possible in any position. Standard flanges are installed on inlet and outlet side. This allows simple and quick connection to the duct section.

The forward curved impellers are directly mounted to the rotor of the external rotor motor and are balanced dynamically together with rotor according to quality level G2.5 to DIN1940. The impellers made of galvanized sheet steel.

The drive has 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-dimensions ball-bearings, fitted on both sides and life time greased are used. Both ball-bearing seats are ground to high precision 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.

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 duct fans EKAD