Acoustic grills

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b air flow acoustic characteristics b b 9632 curves offlow acoustic pressure b the noise levets indicated the curves correspond to reverberation lime 05 sec the noise the grille caused ihe passage the air through it they are the acoustic pressure levels global the table ihe folloving page

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bap color b self balancing exhaust grilles b i change the ir change ife

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designers approved equipment complete range guaranteed results good appearanee blending ail types architecture installers easy fitting light weight slurdy construction no adjustement needed users low noise levels easy maintenance bap standard colours base white ral 9003 grille anthracite grey ral 7016 type

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water before installing check that the rollin washer is correctly fitted into groove n 1 bap color variable flow units the presence control cords demands certain precautions when fitting the units do not locale the unit above door tall piece furniture b 5 b wisn ihe decorative grille soapy water b 9632

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b technical characteristics b b 9632 the bap color b b fixed b b flow b b b the bap color is designee fixed exhaust flow it is composed whithe plastic base tubular section which is mounted rubber joint control element consisting silicone membrane return spring decorative grille weight 150 g note

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position and airflow direction 167 Drive and Control Technology 168 Electrical connection and motor information 168 Connection diagrams 170 Aerodynamics and Acoustics 172 Performance curves 172 The effects of the guard grille 173 Noise level data 174 Installation and safety instructions 176

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VG. The loss in pressure increases linearly as the coefficient of resistance æG, or as the square with the volume of forced airflow. Factor for loss attributable to the grating KVG as a function of the nominal diameter dn of the fan. Aerodynamics and Acoustics The effects of the guard grille 2 ð2 ? dn

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174 A01 60 Hz North America Fig. Ia: Position of microphones to axial fan The suction side A-weighted sound power levels LWA are indicated throughout in the catalog. Simple relations can be used to derive the pressure side or the overall sound power level in addition from the values indicated

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blowing fan mounted downstream of coil III Bell mouth inlet to fan The fan characteristic curves are meassured using bell mouth inlet in accordance with Fig. III, full bell mouth and corresponding to installation type A and without guard grille. IV Affect of the bell mouth on performance (Fig. IV

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A01 60 Hz North America 175 Fig. II: Addition of several sound sources Number of sound sources of the same level Addition to sound level KL1060/2 1 2 5 10 15 20 25 0 5 10 15 dB �¨ �ª 0 Fig. III: Sound sources of different level KL1060/3 0 1 2 dB Addition to sound level

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measurement, the fans being tested are placed in a reverberant wall and operated at nominal voltage (for AC, also at nominal frequency) without additional attachments such as the guard grille. Sound pressure level and sound level All noise levels are measured in conformity to DIN 45635 and ISO 3744

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.0 164.0 193.0 148.0 70.0 113.0 kg 7.1 8.8 Inlet nozzle (long) 54476-2-4013 54476-2-4013 2 b g 5 e d±1 c ±1 Ø124 Ø268 Ø404 Ø 257 Ø 370 66 90 50 22 0,3 115± M6 45¢ª Ø100 -0,4 600 Mass of centrifugal fan Capacitor p. 560 f. Guard grille p. 553 Inlet nozzle p. 550 Electr

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579 Effects with guard grilles Mounting a guard grille reduces the air performance of the axial fan. Without guard grille 2 With guard grille 1 2 1 0 0 [m³/h] [Pa] [%] 2 1 Curve The pressure drop in Pa can be roughly calculated according to the following equation: ÄpGG = GG . 10

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in the diagram opposite. Example: 8 A3G800 axial fans are on a condenser. According to the data sheet, the sound pressure level of a fan is approximately 75 dB(A). The level increase measured from the diagram is 9 dB. Thus the overall sound level of the installation can be expected to be 84 dB(A). Adding

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1.3n 1.4n Curve Influence of the speed n on the sound level Lw When the speed changes, the approximate sound level can be determined using the diagram to the right and the following formula: Lw2 - Lw1 = 50 dB . log (n2 : n1) Lw1 = Sound level after speed change Lw2 = Sound level before speed

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measurement, the fans being tested are placed in a reverberant wall and operated at nominal voltage (for AC, also at nominal frequency) without additional attachments such as the guard grille. Sound pressure level and sound level All noise levels are measured in conformity to DIN 45635 and ISO 3744

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124 Ø268 Ø404 Ø 257 Ø 370 66 90 50 22 0,3 115± M6 45¢ª Ø100 -0,4 600 Mass of centrifugal fan Capacitor p. 560 f. Guard grille p. 553 Inlet nozzle p. 550 Electr. connections p. 596 f. 28 55 Ø100 Ø 115 Ø 7 General information AC centrifugal, backward AC centrifugal

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+50 1~ 230 60 380 3250 39 ? ? 53 120 -25 to +70 A W2S130-AA03 -01 M2S 052-CA 1.1 B) 1.1 A Curve Nominal voltage Frequency Air flow Speed/rpm Power input Current draw Capacitor Sound pressure level Max. operative range Perm. amb. temp. Mass Electr. connection subject to alterations

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3300 24 ? ? 57 ? -25 to +70 A W2E 142-BB01 -01 M2E 052-BA 0.9 0.9 A Curve Nominal voltage Frequency Air flow Speed/rpm Power input Current draw Capacitor Sound pressure level Max. operative range Perm. amb. temp. Mass subject to alterations 100 200 300 400 0 50 100 150 200 [CFM] [Pa

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3300 29 ? ? 58 ? -25 to +75 A W2E 143-AB09 -01 M2E 052-BF 1.0 1.0 A Curve Nominal voltage Frequency Air flow Speed/rpm Power input Current draw Capacitor Sound pressure level Max. operative range Perm. amb. temp. Mass subject to alterations 100 200 300 400 0 50 100 150 200 250 [CFM

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technical data gea sbq underfloor convectors b weight3 b b sound power4 db b b airflow cooling capacity1 heatingcapacity2 dimensions b b inm3 h b b inw b b b b inw b b b b ixwxh inmm b b fan speed b 1 150 355 790 rollup grills 43 33 2 175 405 860 1250 x 345 x 166 43 36 3 200 460 930 43 39 4 235 520

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various cover grills are available as socalled rollup grills that are rolled up down from the units socalled comb grills can be installed which are laid down as rigid units over the models as the illustration below the specialfinish heat exchangers the airdeflection vanes the electricalsystem valve

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b the sake good ambience b where fine design is must exquisite grill covers slender convectors the cover grills are supported sturdy plugon frame system that enables realization an architecturally appealing strip con figuration the grills are available anodized finishes natural aluminum brass

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room climate this type room climate control is easily implemented accordance the stipulations setforthindin en 13779 since gea sbi convectors operate accordance the induction principle since they do not require fans air circulation these convectors are gentle very quiet sbi comb grill protruding

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they are highly effective use conventional raised floors length 1250 mm depth 345 mm outside dimensions the cover grille these models take up little space also inconspicuously fit into the interior design buildings large glazed gea b base convectors outstanding setup b 9632 heating cooling quiet safe efficient