Datasheet

Product Data Sheet RER225-55/18/2TDO
02/01/2019 page 10 of 14
3.6 Aerodynamics
Measurement
conditions:
Measured with a double chamber intake rig acc. to DIN EN ISO 5801.
Normal air density = 1,2 kg/m3; Temperature 23°C +/ - 3°C;
In the intake and outlet area should not be any solid obstruction within 0,5 m. Motor shaft
horizontal.
The information is only valid under the specified test conditions and may be changed by the
installation conditions. If there are deviations from the standard test conditions, the
characteristic values must be checked under the installed conditions. Power consumption of
the fan motor when operating at normal voltage is shown. Depending on the operating
conditions of the application, the power input may be higher.
Measurement setup: Measured between two steel plates
Steel plate: 266 mm x 266 mm
Intake nozzle: D: 146 mm; R: 25 mm
Distance between bottom and top plate: 123,5 mm
Overlapping impeller / nozzle: 2 mm
a.) Operation condition:
3.500 1/min at free air flow U Contr. 10 V
Max. free-air flow (∆p = 0 / = max.) 1.540 m3/h
Max. static pressure (∆p = max. / =0) 935 Pa