gebhardtventilatoren - aeolosfans.com · product review 2 “genovent” centrifugal roof unit rda...
Post on 26-Jul-2018
223 Views
Preview:
TRANSCRIPT
1
Direct drive with integral orexternally-mounted motorCentrifugal impeller with backwardcurved bladesAluminium, galvanised steelRDA up to 40 °C, RDM up to 120 °C
TechnicalDocumentation 5
Roof extract fans
RDA/RDM
GebhardtVentilatoren
ARDAgenovent®
Product review
2
“genovent” Centrifugal Roof Unit RDA 21–1819 ·/. 2225Horizontal, swirl-free and directed air discharge100 % speed-controllable integral motor,with motor protection, single-phase a.c.Temperature of gas medium (see page 14)Flow volume up to max. 1,300 m3/h.
Technical Description 3 – 10Sample specifications 11Technical Data 14 – 15Performance Curves 18Dimensions 28Accessories 41 – 59Wiring Diagrams 60 – 67
“genovent” Centrifugal Roof UnitRDA 31–2528 ·/. 7190Vertical, swirl-free and directed air discharge100 % speed-controllable integral motor,with motor protection, single- or three-phase a.c.Easy removal of casing parts,impeller + motor for inspection and maintenance.Temperature of gas medium (see pages 14 and 17)Flow volume up to max. 33,500 m3/h.
RDA 32–2528 ·/. 7190Version as above, exceptthat casing has noise-absorbent lining to reduce dischargenoise, and is the same as for the RDM series.
Technical Description 3 – 10Sample specifications 11 – 12Technical Data 14 – 17Performance Curves 19 – 27Dimensions 28 – 29Accessories 41 – 59Wiring Diagrams 60 – 67
“genovent” Centrifugal Roof UnitRDM 31–2528 ·/. 7190Vertical, swirl-free and directed air dischargeExternal motor for three-phase a.c. single- or multi-speed,or explosion-proofed. Out of airflow.Easy removal of casing parts,impeller + motor for inspection and maintenance.Temperature of gas medium (see page 30)Flow volume up to max. 33,500 m3/h.
RDM 32–2528 ·/. 7190Version as above, exceptthat casing has noise-absorbent lining to reduce dischargenoise.
Technical Description 3 – 10Sample specifications 12 – 13Technical Data 30 – 33Performance Curves 34 – 38Dimensions 39Accessories 41 – 59Wiring Diagrams 60 – 67
“genovent” Roof CowlZLH 30–0250 ·/. 0710For protecting roof ventilation apertures from the weather.Suitable for both inlets and outlets.
Technical Description 40Sample specifications 13Technical Data 40Dimensions 40Accessories 41 – 45
Notes on Catalogue DataWe reserve the right to change any measurements and technical data contained in this catalogue in accordancewith the further development of our products. All information valid at the time of printing.
The new “genovent” roof unit design has won awards in internationallyrecognised design competitions, for its outstanding features and quality.
The Genovent product was accepted bythe Stuttgart Design Centreof the Baden-Württemberg Trade Board,for inclusion in the prestigiousGerman (Design) Selection 1986
Design Innovation ’88
AWARDfor high-quality design
Haus Industrieform Essen
Gebhardt genovent
Technical Description
3
Gebhardt genovent –the new generationof roof units.
– Stylish appearance– Uniform design– Quiet– Swirl-free flow– Weatherproof and
energy efficient– Long life– Economical– Easy assembly and
inspection– Easy to service
Gebhardt genovent
Tech
nica
l Des
crip
tion
Technical Description
4
Weatherproofdischarge shutter
Stalling edgefor stability
Guards in accordancewith DIN EN 294.
Reliable shuttermechanism
Air coolinginlet to motor
Upstand – secureseal for roof
Corners of baseframe enclosed
Run-off forsplash water
AV-installationfor motor
Easy inspection Problem-free connectionduct
Isolator fittedas standard
Insulated cableducts
Noise-attenuatingversion
Packed forsafe transport
to inlet-side
Gebhardt genovent
Technical Description
5
“genovent” Type RDA 21 Suitable for discharging slightly polluted air up to app. + 40 °C. (for max. temperatureof gas medium see “Technical Data”).
The rectangular casing, made of galvanised sheet steel, has two oppositemounted discharge outlets protected from the weather with an aerodynamicallyshaped grille, which provide for horizontally directed, swirl-free air discharge.
The centrifugal impeller, with backward-curved blades, is mounted on the rotor of a100 % variable-speed integral motor, the assembly being dynamically balanced tostandard G 2.5.
“genovent” Type RDA 31 Centrifugal roof units of this type are suitable for discharging more heavily pollutedair up to app. + 40 °C. (for max. temperature of gas medium see “Technical Data”).
The stylish sealed casing, made of corrosion resistant aluminium, has two oppositemounted vertical discharge outlets. The used air is discharged vertically at high speed,swirl-free, to well above roof level.The discharge outlets are protected from the weather upon fan shutdown by automaticbackdraught shutters, which prevent the entry of snow, rain or cold air.The base frame of galvanised sheet steel is suitable for fitting to an upstand, whichprojects well beyond the upstand in order to insulate it satisfactorily.
The casing is constructed so that individual external and internal parts, including theimpeller, can be removed, folded or swung aside, to allow easy replacement,inspection and maintenance.Special tools are not necessary for this work.
The high-performance, aerodynamically efficient centrifugal impeller, with backwardcurved blades, is mounted on the rotor of a 100 % variable speed integral motor.The motor-impeller assembly is dynamically balanced to G 2.5.
“genovent” Type RDM 31 The technical details of this fan type are substantially the same as Type RDA 31.However, the centrifugal impeller is driven by a standard motor placed out of theairstream, so that gas medium temperatures of up to max. + 120 °C are possible.The motor, of type B 5 protected to IP 54 standard, is adequately air-cooled via aseparate system.
The casing is higher than for Type RDA 31, to allow for the external motor.
“genovent” Type RDA 32 Technical specification as for the basic types RDA 31 and RDM 31.“genovent” Type RDM 32 The casing of both types is equipped with a sound absorbent lining in order to
reduce the discharge noise. The average silencing effect is in the order of 7 dB (see also “Noise”, page 8)
Advice on Installation genovent roof units are built for fitting to roof-mounted base stands. These should bemounted horizontally if at all possible. A slope angle of up to 25 ° is permissible, solong as the two discharges are mounted at right angles to the roof slope, i.e. at equalheight.
Other We reserve the right to make changes to data and dimensions after our catalogueshave been printed and ask you to note that all details are quoted without warranty.Please contact our sales section to obtain information on any differences betweenthe printed details and the actual current technical status to avoid any problems.
Gebhardt genovent
Technical Description
6
Motors Type RDA: Well tried and tested integral drive motors are used. The motors areprotected to IP 44 standard and have Class B insulation, including damp protection.Holes drilled in the rotor allow condensed moisture that may form in the motor to runoff.Noise-tested, maintenance-free deep-groove ball bearings give the motor long life.
To avoid overheating, every motor is equipped with termal contacts.Motors on Type RDA 21 fans have the termal contacts connected in series into themotor winding. They shut off the motor on reaching a set temperature, and restartautomatically when it has cooled off.Some single-phase a.c. motors on Type RDA 31 fans, up to 2.5 Amp Max. also havetermal contacts connected in series into the winding which shut off the motor onreaching a set temperature, and restart automatically when it has cooled off. Nospecial protection switch is needed.On all other motors, winding temperature is monitored by thermal contacts connectedto a motor protection unit or a realy.
Apart from a very few exceptions (marked with*) all non-geared versions of Type RDAfans have 100 % variable-speed control.The speed control is effected by matching the fan load with that of the current andmotor slip characteristic i.e. the fan speed adjusts until the motor torque is equal tothe impeller torque.
Type RDM: These fans are driven by standard flange mounted motors version B 5,protected to IP 54 standard, with Class B insulation. This series is available with 2speed and explosion proof motors. Motors with speed control are available onrequest, at extra cost.On standard motors without speed control, protection is effected on-site by installinga motor protection bimetallic switch.
Explosion-proofed Version This version of the roof unit follows VDMA Guideline 24 169, Part 1, “Explosion-proofing Measures in Construction” for the displacement of explosive gas mixtures inZones 1 and 2.
The motors are protected to the standard “increased Safety EExe II”, temperatureclasses T1 to T3, as defined by DIN EN 50014; VDE 0170/171.
Safety Guards All genovent roof units are supplied with a discharge-side mesh safety guard inaccordance with DIN EN 294.The inlet side is not fitted with a standard guard, because it is normal practice toattach other system parts to the side.However, if the unit is installed in such a way that accidental contact with the impelleris possible, an additional inlet guard can be supplied as an accessory.
Electrical Connection All roof units are supplied ready to connect.Beneath the casing lid is a clearly-labelled terminal box, which also contains theisolator switch.The roof fans of the line RDA 21- are supplied without isolator as a standard. Theisolator is available as an accessory to be ordered separately.On motors with a protection unit, the control circuit through the thermal contacts isinstantly bridged when the isolator is switched to off. Therefore the relevant relay inthe switching box is not cut out.When the work on the fan is completed it is necessary for this to be switched back on.
For technical reasons, explosion-proofed versions do not contain an isolator.For ease of connection, the terminals are supplied fitted with approx. 3 metres ofcable.
Types RDA 31–....–5D and RDA 31–....–7D contain a transformer, in a separate boxbeneath the casing lid, for alternative fan speeds.As well as the nominal current, 6 different alternative currents can be selected (seeperformance curves).The ex-works current selection for the fan speed is 200 V.On-site change to other alternative currents, and hence different fan speeds, is easilychanged.
Terminal wiring diagrams for the various genovent fan types can be found on pages –wiring diagrams. Their choice is explained in “Technical Data”.
Accessories A wide range of accessories are available for the fan inlet mounting onto the roof andcontrol of the motor drive (see also sections Sample Specifications, Accessories –Summary, and Accessories).
Gebhardt genovent
Technical Description
7
The performance curves were obtained using a Type B inlet side test chamber inaccordance with DIN 24 163, and BS 848 Part 1, (see diagram below).
To include the effect of the automatic shutters in the results, the roof unit wasmounted horizontally onto test chamber.
1 = Fan under test2 = Inlet chamber3 = Grille4 = Variable throttle5 = Auxiliary fan6 = Honeycomb straightener7 = Standard intake nozzle
The performance grids show the effective pressure increase ∆pfa (Pressure increaseobtained from the fan in free-field conditions) as a function of the flow volume V· .Reference gas density: 1 = 1.15 kg/m3
The performance curves are not valid for a constant fan speed, but for whichever fanspeed, allowing for slip, is reached by the asynchronous motor at a given duty point.
Torque and speed tolerances of the drive motor, and construction tolerances of thefan, may cause slight deviations from the catalogue performance curve.
“genovent” roof units are built to tolerances of Class 2 of DIN 24 166 “Fans, TechnicalSpecifications”.
Hence, the following deviations from the catalogue values are permitted:
Flow volume V· ± 5 %
Pressure increase ∆pfa ± 5 %
Absorbed power P + 8 %
With fan type RDA 32–…. one must allow for a volume flow decrease of between5 % and 10 %, because the internal resistance is higher than in the standard models.
Fan type RDM 32–… will give the same performance results as type RDM 31–….
Performance Curves
Gebhardt genovent
Technical Description
8
Noise
Because conditions in the operating environment are usually far from ideal formeasurement and can vary greatly, computer-assisted data collection and evaluationensure highly repeatable accuracy in the tests. The noise level stated in theperformance curves is the A-weighted sound power level LWA, with equal values forthe inlet side (LWA3) and the discharge side (LWA8). Deviations from the cataloguevalue of up to + 4 dB are possible.
It is not possible to determine with certainty the stated A-weighted sound pressurelevel LPA at the different distances.
LPA ≈ LWA + ∆L
Under ideal conditions, with a clear hemisphere of sound propagation, curve “a” isvalid. However, curve “b” is recommended for practical estimates.
For more exact calculations when determining the required attenuation, the soundpower level in the octave bands is important.
LWokt = LWA + LWrel
The relative sound power levels for inlet and discharge sides, at various duty points,can be read from the table on the following page.
The discharge noise can be reduced with fan types RDA 32… and RDM 32… .These types include a sound-absorbing casing interior. The A-weighted soundpower level decreases by approximately 7 dB.Distributed over the octave spectrum, these are the average expected reductions:
1 = Air permeable sound screen2 = Microphones for envelope
measurement3 = Fan under test4 = Measuring duct5 = Microphone with attachment
for duct measurement6 = Sound-absorbing end cover7 = Variable throttle
Measurement and evaluation of noise levels are in accordance with DIN 45 635Part 38 (BS 848 Part 2).This standard defines several different sound power levels and methods for determiningthem. The following were used for the purpose of this catalogue.
Duct method – inlet sideThe duct measurement method is described in DIN EN 25 136.The sound power emanating from the roof unit into the inlet-side duct is measured.The test duct is fitted with a sound-absorbing end cover to avoid reflecting the soundwaves back into the duct.
The tubular microphone attachment is protected from turbulent pressure changes inthe airstream, to ensure that any effect on the microphone is insignificant.
Envelope method – discharge sideThe envelope method is described in DIN 45 635 Parts 1 and 38 (BS 848 Part 2).A cuboid envelope is assumed at a fixed distance surrounding the roof unit, withmeasuring points lying on its planes.Tolerance Class 2 requires that the test environment shall affect results by 2 dB orless.This requirement is achieved by a specially fitted sound screen developed by theFraunhofer Institute of Physics.
fm 63 125 250 500 1000 2000 4000 8000 Hz
∆L 0.2 0.5 1.5 8 9.5 12 12 13 dB
Gebhardt genovent
Noise
9
RDA 21–1819 ·/. 2225– 2-pole 0.5 ·Vopt 6 8 4 –1 –10 –16 –20 –27 dB·Vopt 7 7 3 –1 – 9 –15 –18 –25 dB·Vmax 5 3 –0 0 – 8 –12 –13 –17 dB
Duty point 63 125 250 500 1000 2000 4000 8000 Hz
Inlet Side Relative sound power level Lwrel 3 at octave centre frequencies fm
4-pole 0.5 ·Vopt 11 9 5 –3 –12 –20 –24 –34 dB·Vopt 10 7 4 –2 –10 –17 –21 –31 dB·Vmax 9 4 3 –1 – 9 –12 –18 –27 dB
RDA/RDM 31–2528 ·/. 2531– 2-pole 0.5 ·Vopt 16 12 3 –4 –13 –17 –20 –27 dB·Vopt 1 1 6 –3 –12 –14 –15 –23 dB·Vmax –2 –4 5 –3 –12 –16 –15 –19 dB
4-pole 0.5 ·Vopt 13 12 2 –2 –10 –14 –19 –27 dB·Vopt 8 12 1 –3 –10 –13 –18 –26 dB·Vmax 4 10 1 –2 – 9 –13 –15 –23 dB
6-pole 0.5 ·Vopt 12 12 2 –2 – 9 –16 –22 –31 dB·Vopt 8 12 0 –4 –11 –17 –22 –35 dB·Vmax 8 14 4 –1 – 9 –13 –13 –34 dB
RDA/RDM 31–3535 ·/. 3545– 4-pole 0.5 ·Vopt 13 11 1 –2 –11 –16 –21 –27 dB·Vopt 9 11 1 –2 –11 –15 –20 –24 dB·Vmax 6 9 2 –1 –11 –16 –19 –21 dB
6-pole 0.5 ·Vopt 16 10 1 –1 –10 –16 –22 –27 dB·Vopt 14 11 1 –2 –11 –16 –22 –30 dB·Vmax 11 13 3 –1 –12 –17 –21 –29 dB
RDA/RDM 31–4550 ·/. 4556– 4-pole 0.5 ·Vopt 14 10 1 –2 –10 –14 –15 –22 dB·Vopt 9 12 0 –3 –10 –15 –15 –21 dB·Vmax 3 9 1 –2 –12 –16 –16 –12 dB
6-pole 0.5 ·Vopt 15 11 1 –2 –11 –15 –16 –23 dB·Vopt 11 13 –1 –4 –12 –16 –17 –25 dB·Vmax 7 15 3 –1 –10 –14 –12 –21 dB
8-pole 0.5 ·Vopt 19 4 1 –2 – 8 –14 –18 –25 dB·Vopt 20 4 0 –3 – 7 –14 –17 –26 dB·Vmax 19 4 2 –3 –11 –16 –13 –27 dB
RDA/RDM 31–5663 ·/. 5675– 4-pole 0.5 ·Vopt 10 9 3 –4 – 8 –14 –16 –23 dB·Vopt 5 9 1 –6 – 8 –13 –12 –17 dB·Vmax –3 5 –2 –3 – 6 –10 –11 –12 dB
6-pole 0.5 ·Vopt 14 11 1 –2 – 8 –14 –16 –23 dB·Vopt 13 11 –1 –4 –10 –15 –16 –22 dB·Vmax 11 11 0 –2 – 9 –13 –10 –15 dB
8-pole 0.5 ·Vopt 15 5 1 –1 – 8 –13 –16 –23 dB·Vopt 15 3 0 –2 – 7 –11 –14 –22 dB·Vmax 15 3 1 –3 – 9 –13 –11 –23 dB
RDA/RDM 31–7180 ·/. 7190– 6-pole 0.5 ·Vopt 14 11 1 –2 –10 –14 –16 –23 dB·Vopt 11 13 –1 –4 –11 –15 –17 –23 dB·Vmax 7 13 2 –1 – 9 –13 –11 –18 dB
8-pole 0.5 ·Vopt 15 5 1 –2 – 8 –14 –16 –23 dB·Vopt 15 3 0 –2 – 7 –12 –15 –24 dB·Vmax 14 3 1 –3 – 9 –14 –12 –25 dB
12-pole 0.5 ·Vopt 15 4 0 –2 – 7 –13 –17 –24 dB·Vopt 17 3 0 –2 – 6 –12 –18 –24 dB·Vmax 18 6 1 –2 – 9 –13 –15 –28 dB
Gebhardt genovent
Noise
10
RDA 21–1819 ·/. 2225– 2-pole 0.5 ·Vopt –12 – 4 –1 –3 –6 – 6 –11 –22 dB·Vopt –11 – 7 –3 –4 –6 – 6 –11 –20 dB·Vmax –14 –12 –8 –5 –6 – 6 – 9 –17 dB
Duty point 63 125 250 500 1000 2000 4000 8000 Hz
Discharge Side Relative sound power level Lwrel 8 at octave centre frequencies fm
4-pole 0.5 ·Vopt – 1 1 1 –3 –6 – 7 –16 –26 dB·Vopt – 3 0 0 –3 –6 – 7 –15 –25 dB·Vmax – 7 3 –2 –5 –7 – 8 –14 –25 dB
RDA/RDM 31–2528 ·/. 2531– 2-pole 0.5 ·Vopt – 5 0 0 –2 –5 – 8 –12 –19 dB·Vopt – 8 – 6 –1 –3 –6 – 8 – 9 –17 dB·Vmax – 9 – 8 –3 –2 –6 – 8 – 8 –15 dB
4-pole 0.5 ·Vopt – 2 0 –1 –2 –5 – 8 –13 –21 dB·Vopt – 5 0 –2 –3 –5 – 7 –12 –21 dB·Vmax –10 – 1 –4 –3 –5 – 6 –12 –19 dB
6-pole 0.5 ·Vopt – 2 3 2 –2 –6 –11 –18 –28 dB·Vopt – 4 4 2 –2 –6 –12 –18 –29 dB·Vmax – 6 2 3 –2 –5 – 9 – 8 –30 dB
RDA/RDM 31–3535 ·/. 3545– 4-pole 0.5 ·Vopt – 3 4 –1 –4 –5 – 7 –12 –20 dB·Vopt – 6 4 –1 –4 –5 – 7 –12 –19 dB·Vmax –10 4 –1 –3 –5 – 7 –13 –17 dB
6-pole 0.5 ·Vopt 1 6 0 –3 –6 – 9 –16 –25 dB·Vopt – 1 6 0 –3 –6 – 9 –15 –25 dB·Vmax – 1 6 1 –3 –5 – 8 –13 –25 dB
RDA/RDM 31–4550 ·/. 4556– 4-pole 0.5 ·Vopt 1 5 0 –4 –5 – 9 –12 –20 dB·Vopt – 4 8 –1 –5 –6 – 9 –12 –19 dB·Vmax – 8 8 –2 –4 –6 – 9 –15 –12 dB
6-pole 0.5 ·Vopt 2 4 1 –4 –5 – 7 –12 –22 dB·Vopt 0 4 0 –4 –6 – 8 –13 –22 dB·Vmax – 4 5 0 –3 –6 – 8 –12 –22 dB
8-pole 0.5 ·Vopt 7 4 –1 –4 –4 – 9 –15 –25 dB·Vopt 7 3 –2 –4 –4 – 8 –15 –25 dB·Vmax 7 3 –1 –5 –4 – 9 –14 –24 dB
RDA/RDM 31–5663 ·/. 5675– 4-pole 0.5 ·Vopt 2 5 2 –3 –6 – 9 –15 –20 dB·Vopt – 3 5 0 –4 –6 – 9 –11 –14 dB·Vmax –10 2 –4 –4 –4 – 8 –12 –15 dB
6-pole 0.5 ·Vopt 2 3 0 –3 –5 – 8 –13 –21 dB·Vopt 2 3 –1 –3 –5 – 8 –12 –19 dB·Vmax 0 4 –1 –3 –6 – 8 –11 –16 dB
8-pole 0.5 ·Vopt 4 1 0 –3 –5 – 8 –15 –22 dB·Vopt 4 0 –2 –3 –5 – 7 –14 –23 dB·Vmax 3 2 0 –2 –8 – 9 – 8 –23 dB
RDA/RDM 31–7180 ·/. 7190– 6-pole 0.5 ·Vopt 2 4 1 –3 –5 – 7 –13 –21 dB·Vopt 1 3 0 –4 –5 – 8 –12 –20 dB·Vmax – 3 4 0 –3 –6 – 8 –11 –20 dB
8-pole 0.5 ·Vopt 2 1 0 –3 –6 – 8 –15 –23 dB·Vopt 3 0 –2 –3 –5 – 8 –14 –23 dB·Vmax 3 2 0 –2 –6 – 8 –10 –23 dB
12-pole 0.5 ·Vopt 6 3 –1 –3 –5 – 8 –15 –26 dB·Vopt 6 1 –1 –3 –5 – 8 –15 –26 dB·Vmax 6 1 –1 –3 –5 – 8 –15 –25 dB
Gebhardt genovent
Sample Specifications
11
RDA 21– 1819 ·/· 2225 Centrifugal Roof Unit Fanwith swirl free horizontally directed discharge, for maximum gas medium temperatures(see page 15).Stylish casing and base frame with inlet cone, manufactured from galvanised sheet steel.Inlet flange in accordance with DIN 24 155, Sheet 2.Discharge outlets protected from the weather with an aerodynamically shaped grille.Centrifugal impeller with backwards curved blades, mounted on the rotor of avariable speed integral external rotor motor, protected to IP 44.Motor protection is through direct switching thermal contacts in the motor winding,supplied ready to connect.Dynamically balanced, installed vibration free, totally maintenance free.
Fan type genovent RDA = ...........................Volume ·V = ........................... m3/hEffective pressure increase ∆pfa = ........................... PaTemp. of gas medium t = ........................... °CSpeed n = ........................... rpmShaft power P1 = ........................... KWMax. absorbed power I = ........................... AVoltage/frequency U / f = ........................... V / HzSound power level LWA = ........................... dBWeight G = ........................... kgDimensions ........................... mm
Accessories (extra cost)Flat roof upstand Inlet flexible connectionFlat roof upstand-high Inlet mating flangeUpstand silencer Mesh inlet guardConnection plate Automatic inlet shutterUpstand for inclined roof Speed selectorSoaker sheet (for corrugated roofs) Speed controller
Special feature (extra cost)Isolator
RDA 31– 2528 ·/· 7190 Centrifugal Roof Unit Fanwith swirl free vertically directed discharge, for maximum gas medium temperatures(see page 15 and 17).Stylish sealed casing manufactured from aluminium, base frame of galvanised sheetsteel for fitting to upstand, projecting well beyond the upstand in order to increaseweatherproofing.Inlet flange in accordance with DIN 24 155, Sheet 2.Discharge outlets are protected from the weather on fan shutdown by automaticbackdraught shutters.Casing parts, and the impeller plus motor, are easily removed for inspection andmaintenance.High performance centrifugal impeller with backward curved blades, mounted onthe rotor of a variable speed external rotor motor, protected to IP 44, totallymaintenance free, installed vibration free, with isolator fitted ready to connect.Built in thermal contacts for complete motor protection.
Fan type genovent RDA = ...........................Volume ·V = ........................... m3/hEffective pressure increase ∆pfa = ........................... PaTemp. of gas medium t = ........................... °CSpeed n = ........................... rpmShaft power P1 = ........................... KWMax. absorbed power I = ........................... AVoltage/frequency U / f = ........................... V / HzSound power level LWA = ........................... dBWeight G = ........................... kgDimensions ........................... mm
Accessories (extra cost)Flat roof upstand Mesh inlet guardFlat roof upstand-high Inlet silencerUpstand silencer Flanged inlet coneConnection plate Motor drive for discharge shutterUpstand for inclined roof Motor protection unitSoaker sheet (for corrugated roofs) Speed selectorInlet flexible connection Speed controllerInlet mating flange
Special feature (extra cost)Increased corrosion protection with binary epoxy resin paint or powder coating
Gebhardt genovent
Sam
ple
Sp
ecifi
catio
ns
Sample Specifications
12
RDM 31– 2528 ·/· 7190 Centrifugal Roof Unit Fanwith swirl free vertically directed discharge, for gas medium temperatures up to 120 °C.Stylish sealed casing manufactured from aluminium.Base frame of galvanised sheet steel for fitting to upstand, projecting well beyond theupstand in order to increase weatherproofing and insulation.Inlet flange in accordance with DIN 24 155, Sheet 2.Discharge outlets are protected from the weather on fan shutdown by automaticbackdraught shutters.Casing parts, and the impeller plus motor, are easily removed for inspection andmaintenance.High performance centrifugal impeller with backward curved blades, mounted on theshaft of a standard motor placed out of the airstream, protected to IP 54.The motor is adequately air cooled via a separate system. Installed with isolator fittedready to connect (except for explosion proofed version).
Fan type genovent RDM = ...........................Volume ·V = ........................... m3/hEffective pressure increase ∆pfa = ........................... PaTemp. of gas medium t = ........................... °CSpeed n = ........................... rpmShaft power P1 = ........................... KWVoltage/frequency U / f = ........................... V / HzSound power level LWA = ........................... dBWeight G = ........................... kgDimensions ........................... mm
Accessories (extra cost)Flat roof upstand Inlet flexible connectionFlat roof upstand-high Inlet mating flangeUpstand silencer Mesh inlet guardConnection plate Inlet silencerUpstand for inclined roof Flanged inlet coneSoaker sheet (for corrugated roofs) Motor drive for discharge shutter
Special feature (extra cost)Increased corrosion protection with binary epoxy resin paint or powder coating
RDA 32– 2528 ·/· 7190Noise attenuated version
Centrifugal Roof Unit Fanwith swirl free vertically directed discharge, for maximum gas medium temperatures(see page 15 and 17).Stylish sealed casing manufactured from aluminium, with sound absorbing lining.Base frame of galvanised sheet steel for fitting to upstand, projecting well beyond theupstand in order to increase the weatherproofing and insulation.Inlet flange in accordance with DIN 24 155, Sheet 2.Discharge outlets are protected from the weather on fan shutdown by automaticbackdraught shutters.Casing parts, and the impeller plus motor, are easily removed for inspection andmaintenance.High performance centrifugal impeller with backward curved blades, mounted onthe rotor of a variable speed external rotor motor, protected to IP 44, totallymaintenance free, installed vibration free, with isolator fitted ready to connect.Built in thermal contacts for complete motor protection.
Fan type genovent RDA = ...........................Volume ·V = ........................... m3/hEffective pressure increase ∆pfa = ........................... PaTemp. of gas medium t = ........................... °CSpeed n = ........................... rpmShaft power P1 = ........................... KWMax. absorbed power I = ........................... AVoltage/frequency U / f = ........................... V / HzSound power level LWA = ........................... dBWeight G = ........................... kgDimensions ........................... mm
Accessories (extra cost)Flat roof upstand Mesh inlet guardFlat roof upstand-high Inlet silencerUpstand silencer Flanged inlet coneConnection plate Motor drive for discharge shutterUpstand for inclined roof Motor protection unitSoaker sheet (for corrugated roofs) Speed selectorInlet flexible connection Speed controllerInlet mating flange
Special feature (extra cost)Increased corrosion protection with binary epoxy resin paint or powder coating
Gebhardt genovent
Sample Specifications
13
RDM 32– 2528 ·/· 7190Noise attenuated version
Centrifugal Roof Unit Fanwith swirl free vertically directed discharge, for gas medium temperatures up to 120 °C.
Stylish sealed casing manufactured from the aluminium, with sound absorbing lining.Base frame of galvanised sheet steel for fitting to upstand, projecting well beyond theupstand in order to increase the weatherproofing and insulation.Inlet flange in accordance with DIN 24 155, Sheet 2.
Discharge outlets are protected from the weather on fan shutdown with automaticbackdraught shutters.Casing parts, and the impeller plus motor, are easily removed for inspection andmaintenance.
High performance centrifugal impeller with backward curved blades, mounted on theshaft of a standard motor placed out of the airstream, protected to IP 54.The motor is adequately air cooled via a separate system. Installed with isolator fittedready to connect (except for explosion proofed version).
Fan type genovent RDM = ...........................Volume ·V = ........................... m3/hEffective pressure increase ∆pfa = ........................... PaTemp. of gas medium t = ........................... °CSpeed n = ........................... rpmShaft power P1 = ........................... KWVoltage/frequency U / f = ........................... V / HzSound power level LWA = ........................... dBWeight G = ........................... kgDimensions ........................... mm
Accessories (extra cost)Flat roof upstand Inlet flexible connectionFlat roof upstand-high Inlet mating flangeUpstand silencer Mesh inlet guardConnection plate Inlet silencerUpstand for inclined roof Flanged inlet coneSoaker sheet (for corrugated roofs) Motor drive for discharge shutter
Special featureIncreased corrosion protection with binary epoxy resin paint or powder coating
ZLH 30– 0250 ·/· 0710 Roof Cowlno motor or impeller, horizontal intake or discharge.
Styling casing manufactured from aluminium.Base frame of galvanised sheet steel with aerodynamic nozzles for both airflowdirections, broad base in order to insulate the upstand.
Inlet flange in accordance with DIN 24 155-2, Sheet 2.Built in grille to repel birds.
Roof Cowl genovent ZLH = ...........................
Accessories (extra cost)Flat roof upstandFlat roof upstand-highUpstand silencerConnection plateUpstand for inclined roofSoaker sheet (for corrugated roofs)Inlet flexible connectionInlet mating flange
Special feature (extra cost)Increased corrosion protection with epoxy resin paint or powder coating
Gebhardt genovent
Technical Data
14
genoventType rpm kW A µF IA/IN m3/h dB dB °C kg
RDA 21–1819–2E 1 2130 0.08 0.36 2 1.25 475 70 68 60 5.0RDA 21–1822–2E 1 2260 0.09 0.47 3 1.21 820 73 69 60 5.5RDA 21–2225–2E 1 2050 0.19 0.9 5 1.57 1 300 80 78 40 6.5
Centrifugal Roof Unitswith Integral Motor
RDA
Single-phase a.c. 230 V, 50 Hz, single speed, 2-pole
RDA 21–1819–4E 1 1400 0.04 0.17 1.4 1.45 290 57 55 60 5.0RDA 21–1822–4E 1 1400 0.04 0.2 2 1.4 380 61 58 60 5.0RDA 21–2225–4E 1 1375 0.05 0.23 2 1.8 760 65 63 60 6.0
RDA 31–2528–4E 2 1360 0.15 0.75 3 1.7 1 600 69 66 50 17RDA 31–2531–4E 2 1410 0.23 1.25 6 2.2 2 300 73 70 60 19RDA 31–3535–4E 2 1370 0.36 1.9 8 1.79 3 350 77 73 50 26RDA 31–3540–4E 1255 0.49 2.45 12 1.68 4 500 78 74 55 29RDA 31–3545–4E 1300 0.95 4.4 20 2.02 6 250 82 79 40 34RDA 31–4550–4E 1250 1.39 6.5 30 1.92 8 800 84 80 50 48
Single-phase a.c. 230 V, 50 Hz, single speed, 4-pole
RDA 31–2528–6E 2 925 0.08 0.43 2 1.37 1 100 60 56 60 17RDA 31–2531–6E 2 920 0.12 0.68 3 1.41 1 470 63 62 40 18RDA 31–3535–6E 2 930 0.15 0.95 4 1.63 2 200 66 62 60 25RDA 31–3540–6E 2 880 0.2 1.25 5 1.5 3 150 68 65 60 27RDA 31–3545–6E 2 850 0.32 1.65 8 1.39 4 150 70 68 40 28RDA 31–4550–6E 890 0.52 2.65 12 1.77 6 250 76 72 45 37RDA 31–4556–6E 940 0.93 5.75 25 2.2 8 400 78 76 40 50
Single-phase a.c. 230 V, 50 Hz, single speed, 6-pole
RDA 31–2528–4D 1400 0.16 0.81/0.47 – 2.28 1 670 70 66 50 17RDA 31–2531–4D 1425 0.23 1.42/0.82 – 2.77 2 530 73 70 60 19RDA 31–3535–4D 1370 0.32 1.45/0.84 – 2.71 3 350 76 72 60 26RDA 31–3540–4D 1400 0.56 2.51/1.45 – 3.24 4 890 80 76 55 29RDA 31–3545–4D 1400 0.97 4.24/2.45 – 3.1 6 850 83 80 45 31RDA 31–4550–4D 1250 1.38 5.28/3.05 – 2.82 9 000 85 80 40 44RDA 31–4556–4D 1250 2.2 6.9 /4.0 – 2.6 10 700 86 83 60 50
Three-phase a.c. 230/400 V, 50 Hz, single speed, 4-pole ∆/Y
RDA 31–2528–6D 945 0.08 0.5 /0.29 – 1.62 1 125 61 57 60 17RDA 31–2531–6D 940 0.12 0.73/0.42 – 1.74 1 630 64 63 60 18RDA 31–3535–6D 935 0.15 0.99/0.57 – 1.96 2 200 66 63 60 25RDA 31–3540–6D 885 0.2 1.04/0.6 – 1.83 3 150 68 65 55 26RDA 31–3545–6D 845 0.3 1.3 /0.75 – 1.89 4 100 70 68 40 28RDA 31–4550–6D 920 0.51 2.34/1.35 – 3.19 6 450 76 71 60 36RDA 31–4556–6D 920 0.79 3.8 /2.2 – 3.32 8 300 78 75 60 46RDA 31–5663–6D 890 1.27 5.0 /2.9 – 2.61 11 800 84 78 45 100RDA 31–5671–6D* 925 2.47 8.5 /4.9 – 4.1 16 400 87 84 50 116RDA 31–5675–6D 850 3.35 10.4 /6.0 – 4.0 19 500 87 84 40 145RDA 31–7180–6D* 945 4.66 16.5 /9.5 – 4.4 25 800 92 89 55 245RDA 31–7190–6D* 940 8.6 27.4 /15.8 – 5.0 34 200 93 91 40 255
Three-phase a.c. 230/400 V, 50 Hz, single speed, 6-pole ∆/Y
* These types do not have variable speed control
1 These fan types have motors with thermal contactsconnected internally in series with the winding.They shut down the motor directly a preset temperaturelimit is reached.Motor protection units are not needed.
2 These fan types have motors with thermal contactsconnected externally in series with the winding.They shut down the motor directly a preset temperaturelimit is reached.Motor protection units are not needed.
Sp
eed
max
. ab
sorb
edp
ower
Full
load
cur
rent
Cap
acito
r ra
ting
Sta
rtin
g/Fu
lllo
ad c
urre
nt r
atio
V· max
L WA
at V·
max
L WA
bei
V·op
t
max
. tem
pof
gas
med
ium
app
rox.
wei
ght
RDA 31–4556–8D 630 0.35 1.84/1.06 – 1.83 5 650 70 67 45 53RDA 31–5663–8D 705 0.73 3.8 /2.2 – 2.95 9 700 77 73 55 105RDA 31–5671–8D 710 1.18 5.9 /3.4 – 3.53 12 700 81 78 45 116RDA 31–5675–8D* 675 1.7 6.25/3.6 – 3.3 15 200 84 81 40 139RDA 31–7180–8D 670 1.87 6.9 /4.0 – 3.2 19 150 83 81 40 250
Three-phase a.c. 230/400 V, 50 Hz, single speed, 8-pole ∆/Y
Gebhardt genovent
15
genoventRDA ESM ETO 10– ETH EPH 03– EPA 03–/63– EPA 92–/93– EPA 83–
1819–2E 1 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E1822–2E 1 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E2225–2E 1 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E
Performance curves, see page 18 – 27Dimensions, see page 28 + 29Accessories, see page 41 – 59
1819–4E 1 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E1822–4E 1 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E2225–4E 1 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E
2528–4E 2 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E2531–4E 2 0018–5E 31–0020–5E 0020–5E 03–0060–5E 93–0023–5E 0060–5E3535–4E 2 0040–5E 31–0020–5E 0020–5E 03–0060–5E 93–0023–5E 0060–5E3540–4E 01–0020–5E 0040–5E 35–0040–5E 0040–5E 03–0060–5E 92–0060–5E 0060–5E3545–4E 01–0020–5E 0070–5E 35–0070–5E – 03–0060–5E 92–0060–5E 0060–5E4550–4E 01–0020–5E 0070–5E 35–0070–5E – 03–0100–5E – 0100–5E
2528–6E 2 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E2531–6E 2 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E3535–6E 2 0018–5E 31–0020–5E 0010–5E 03–0060–5E 93–0023–5E 0060–5E3540–6E 2 0018–5E 31–0020–5E 0020–5E 03–0060–5E 93–0023–5E 0060–5E3545–6E 2 0018–5E 31–0020–5E 0020–5E 03–0060–5E 93–0023–5E 0060–5E4550–6E 01–0020–5E 0040–5E 35–0040–5E 0040–5E 03–0060–5E 92–0060–5E 0060–5E4556–6E 01–0020–5E 0070–5E 35–0070–5E – 03–0060–5E 92–0060–5E 0060–5E
2528–4D 01–0040–8D 0010–8D 35–0010–8D – 63–0080–8D – 0080–8D2531–4D 01–0040–8D 0010–8D 35–0010–8D – 63–0080–8D – 0080–8D3535–4D 01–0040–8D 0010–8D 35–0010–8D – 63–0080–8D – 0080–8D3540–4D 01–0040–8D 0020–8D 35–0020–8D – 63–0080–8D – 0080–8D3545–4D 01–0040–8D 0040–8D 36–0040–8D – 63–0080–8D – 0080–8D4550–4D 01–0040–8D 0040–8D 36–0040–8D – 63–0080–8D – 0080–8D4556–4D 01–0040–8D 0040–8D 36–0040–8D – 63–0080–8D – 0080–8D
2528–6D 01–0040–8D 0010–8D 35–0010–8D – 63–0080–8D – 0080–8D2531–6D 01–0040–8D 0010–8D 35–0010–8D – 63–0080–8D – 0080–8D3535–6D 01–0040–8D 0010–8D 35–0010–8D – 63–0080–8D – 0080–8D3540–6D 01–0040–8D 0010–8D 35–0010–8D – 63–0080–8D – 0080–8D3545–6D 01–0040–8D 0010–8D 35–0010–8D – 63–0080–8D – 0080–8D4550–6D 01–0040–8D 0020–8D 35–0020–8D – 63–0080–8D – 0080–8D4556–6D 01–0040–8D 0040–8D 36–0040–8D – 63–0080–8D – 0080–8D5663–6D 01–0040–8D 0040–8D 36–0040–8D – 63–0080–8D – 0080–8D5671–6D 01–0040–8D – – – – – –5675–6D 01–0040–8D 0065–8D 36–0070–8D – 63–0080–8D – 0080–8D7180–6D – – – – – – –7190–6D – – – – – – –
Noise: The A-weighted sound power level LWA (= LWA3 = LWA8
in accordance with DIN 45 635, Part 38/BS 848, Part 2)for V· max and V· opt is given in the tables.See also section “Noise”.
Detailed description, technical data and dimensionssee pages accessories.
mot
or p
rote
ctio
n Speed controller
elec
tron
ic,
vari
able
with
tran
sfor
mer
5-st
ep s
witc
h
with
auto
tran
sfor
mer
7 ta
ps
elec
tron
ic
4556–8D 01–0040–8D 0020–8D 35–0020–8D – 63–0080–8D – 0080–8D5663–8D 01–0040–8D 0040–8D 36–0040–8D – 63–0080–8D – 0080–8D5671–8D 01–0040–8D 0040–8D 36–0040–8D – 63–0080–8D – 0080–8D5675–8D 01–0040–8D – – – – – –7180–8D 01–0040–8D 0040–8D 36–0040–8D – 63–0080–8D – 0080–8D
elec
tron
ic
elec
tron
icm
ikro
pro
zess
or-
gest
euer
t
Gebhardt genovent
RD
A
Speed selector
Technical Data
16
genoventType rpm kW A IA/IN m3/h dB dB
Sp
eed
max
. ab
sorb
edp
ower
Full
load
cur
rent
Sta
rtin
g/Fu
lllo
ad c
urre
nt r
atio
V· max
L WA
at V·
max
L WA
at V·
opt
Noise: The A-weighted sound power level LWA (= LWA3 = LWA8
in accordance with DIN 45 635, Part 38/BS 848, Part 2)for V· max and V· opt is given in the tables.See also section “Noise”.
RDA 31–2528–5D 1400/1150 0.16/0.09 0.47/0.18 2.28 1670/1490 70/66 66/61
RDA 31–2531–5D 1425/1200 0.23/0.15 0.82/0.31 2.77 2530/2250 73/70 70/66
RDA 31–3535–5D 1370/1000 0.32/0.2 0.84/0.41 2.71 3350/2940 76/71 72/64
RDA 31–3540–5D 1400/1090 0.56/0.4 1.45/0.79 3.24 4890/4000 80/75 76/71
RDA 31–3545–5D 1400/1140 0.97/0.71 2.45/1.4 3.10 6850/5600 83/78 80/75
RDA 31–4550–5D 1250/ 870 1.38/0.68 3.05/1.4 2.82 9000/6500 85/77 80/68
RDA 31–4556–5D 1250/ 880 2.2 /1.2 4.0 /2.1 2.6 10700/7500 86/75 83/71
RDA 31–2528–7D 945/815 0.08/0.04 0.29/0.10 1.62 1125/ 980 61/57 57/53
RDA 31–2531–7D 940/780 0.12/0.06 0.42/0.14 1.74 1630/1380 64/58 63/55
RDA 31–3535–7D 935/760 0.15/0.08 0.57/0.19 1.96 2200/1900 66/60 63/58
RDA 31–3540–7D 885/615 0.20/0.10 0.6 /0.23 1.83 3150/2350 68/60 65/58
RDA 31–3545–7D 845/520 0.30/0.13 0.75/0.32 1.89 4100/2600 70/62 68/63
RDA 31–4550–7D 920/720 0.51/0.34 1.35/0.8 3.19 6450/5450 76/71 71/64
RDA 31–4556–7D 920/700 0.79/0.51 2.2 /1.2 3.32 8300/6800 78/74 75/69
RDA 31–5663–7D 890/620 1.27/0.76 2.9 /1.7 2.61 11800/9100 84/76 78/70
RDA 31–5675–KD 960/720 4.3/2.1 9.0/5.0 5.6/3.5 21400/16200 91/85 88/82
RDA 31–7180–KD 960/715 4.7/2.3 9.7/4.9 5.5/4.1 25800/19400 92/85 89/83
RDA 31–5671–HD 940/470 2.6/0.44 5.4/2.0 4.6/3.0 16400/ 8200 87/71 84/68
RDA 31–5675–HD 950/480 4.4/0.68 8.5/2.7 5.6/3.5 21400/10700 91/77 88/73
RDA 31–7180–HD 920/450 4.6/0.75 9.0/2.8 5.3/3.8 25800/11400 92/74 89/71
Three-phase a.c. 400 V, 50 Hz, twin speed, 4/4-pole Y/Y
Three-phase a.c. 400 V, 50 Hz, twin speed, 6/6-pole Y/Y
Three-phase a.c. 400 V, 50 Hz, twin speed, 6/8-pole, 2 separate windings Y/Y
Three-phase a.c. 400 V, 50 Hz, twin speed, 6/12-pole, Dahlander connection YY/Y
Centrifugal Roof Unitswith Integral Motor
RDAGebhardt genovent
17
2528–5D 50 20
2531–5D 60 22
3535–5D 60 29
3540–5D 55 34 06–0040–8D
3545–5D 45 40
4550–5D 40 53
4556–5D 40 59
2528–7D 60 20
2531–7D 60 21
3535–7D 60 28
3540–7D 55 2906–0040–8D
3545–7D 40 31
4550–7D 60 41
4556–7D 60 55
5663–7D 45 109
5675–KD 40 183 –
7180–KD 40 252 –
5671–HD 50 121 03–0040–8D
5675–HD 40 167 –
7180–HD 40 245 –
genoventRDA °C kg ESM ETO 10– ETH EPA 63– EPA 83–
max
. tem
pof
gas
med
ium
app
rox.
wei
ght
mot
orp
rote
ctio
n un
it
with
auto
tran
sfor
mer
7 ta
ps
with
tran
sfor
mer
5-st
ep s
witc
h
elec
tron
ic
elec
tron
ic
Speedcontroller
Speed selector
Performance curves, see page 18 – 27Dimensions, see page 28 + 29Accessories, see page 41 – 59
Gebhardt genovent
Reference gas density 1 = 1.15 kg/m3
18
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 21–....ef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
volume V·
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
faef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 21-1819-2Evariable speed control
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 21-1819-4Evariable speed control
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 21-1822-2Evariable speed control
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 21-1822-4Evariable speed control
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 21-2225-2Evariable speed control
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 21-2225-4Evariable speed control
Gebhardt genovent
19
1) Electrical connection see circuit diagram No. 522.Ex-works, steps a and e are selected.Subsequent re-selection is problem-free. See also“Technical Description”.
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–2528ef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
= V· opt
XXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 V
RDA 31-2528-4Evariable speed control
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 31-2528-6Evariable speed control
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-2528-5D1)
XXRDA 31-2528-4Dvariable speed control
a e
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-2528-7D1)
XXRDA 31-2528-6Dvariable speed control
a e
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
20
1) Electrical connection see circuit diagram No. 522.Ex-works, steps a and e are selected.Subsequent re-selection is problem-free. See also“Technical Description”.
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–2531ef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 31-2531-4Evariable speed control
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 31-2531-6Evariable speed control
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-2531-5D1)
XXRDA 31-2531-4Dvariable speed control
a e
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-2531-7D1)
XXRDA 31-2531-6Dvariable speed control
a e
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
21
1) Electrical connection see circuit diagram No. 522.Ex-works, steps a and e are selected.Subsequent re-selection is problem-free. See also“Technical Description”.
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–3535ef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
= V· opt
XXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 V
RDA 31-3535-4Evariable speed control
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 31-3535-6Evariable speed control
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-3535-5D1)
XXRDA 31-3535-4Dvariable speed control
a e
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-3535-7D1)
XXRDA 31-3535-6Dvariable speed control
a e
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
22
1) Electrical connection see circuit diagram No. 522.Ex-works, steps a and e are selected.Subsequent re-selection is problem-free. See also“Technical Description”.
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–3540ef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 31-3540-4Evariable speed control
= V· opt
XXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 V
RDA 31-3540-6Evariable speed control
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-3540-5D1)
XXRDA 31-3540-4Dvariable speed control
a e
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-3540-7D1)
XXRDA 31-3540-6Dvariable speed control
a e
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
23
1) Electrical connection see circuit diagram No. 522.Ex-works, steps a and e are selected.Subsequent re-selection is problem-free. See also“Technical Description”.
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–3545ef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 31-3545-4Evariable speed control
= V· opt
XXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 V
RDA 31-3545-6Evariable speed control
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-3545-5D1)
XXRDA 31-3545-4Dvariable speed control
a e
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-3545-7D1)
XXRDA 31-3545-6Dvariable speed control
a e
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
24
1) Electrical connection see circuit diagram No. 522.Ex-works, steps a and e are selected.Subsequent re-selection is problem-free. See also“Technical Description”.
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–4550ef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
= V· opt
XXXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V
RDA 31-4550-4Evariable speed control
= V· opt
XXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 V
RDA 31-4550-6Evariable speed control
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-4550-5D1)
XXRDA 31-4550-4Dvariable speed control
a e
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-4550-7D1)
XXRDA 31-4550-6Dvariable speed control
a e
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
25
1) Electrical connection see circuit diagram No. 522.Ex-works, steps a and e are selected.Subsequent re-selection is problem-free. See also“Technical Description”.
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–4556ef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
volume V·
volume V·
Volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
faef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
XXXXXX
a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 V
RDA 31-4556-6Evariable speed control
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-4556-5D1)
XXRDA 31-4556-4Dvariable speed control
a e
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-4556-7D1)
XXRDA 31-4556-6Dvariable speed control
a e
= V· opt
XXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 V
RDA 31-4556-8Dvariable speed control
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
26
1) Electrical connection see circuit diagram No. 522.Ex-works, steps a and e are selected.Subsequent re-selection is problem-free. See also“Technical Description”.
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–5663RDA 31–5675
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
volume V·
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
faef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
XXRDA 31-5663-7D1)
XXRDA 31-5663-6Dvariable speed control
a e
= V· opt= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
RDA 31-5663-8Dvariable speed control
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
RDA 31-5671-8Dvariable speed control
RDA 31-5675-KD1 2RDA 31-5675-HD1 3
= V· opt
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
RDA 31-5675-6Dvariable speed control
RDA 31-5671-6D1RDA 31-5671-HD12
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
27
In the performance grids the A-weighted sound power levelLWA (= LWA3 = LWA8 in accordance with DIN 45 635, Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDA 31–5675RDA 31–7180RDA 31–7190
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
volume V·
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
faef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
RDA 31-7180-6D 1RDA 31-7180-KD 1 2RDA 31-7180-HD 1 3
= V· opt
= V· opt
XXXXXXX
a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V
RDA 31-7180-8Dvariable speed control
RDA 31-7190-6D
= V· opt
RDA 31-5675-8D 1
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
Dimensions
28
RDA 31– a b Y c d e f g Y h i k l m α
2528 600 330 440 32 M6 440 133 330 12 286 138 138 6 x 60°2531 600 330 440 32 M6 440 133 330 12 286 138 138 6 x 60°3535 770 405 600 32 M8 570 170 450 12 395 216 192 8 x 45°3540 770 405 600 32 M8 570 170 450 12 395 216 192 8 x 45°3545 770 405 600 32 M8 570 170 450 12 395 216 192 8 x 45°4550 985 510 750 32 M8 730 208 590 14 487 282 222 6 x 60°4556 985 510 750 32 M8 730 208 590 14 487 282 222 6 x 60°5663 1225 640 940 40 M10 920 235 750 14 605 317 317 8 x 45°5671 1225 640 940 40 M10 920 235 750 14 605 317 317 8 x 45°5675 1225 640 940 40 M10 920 235 750 14 751 317 317 8 x 45°7180 1625 870 1270 65 M10 1230 345 1050 14 751 445 445 8 x 45°7190 1625 870 1270 65 M10 1230 345 1050 14 751 445 445 8 x 45°
RDA
Dimensions in mm, we reserve the right to make changes.
Fan type RDA 21–1819 ·/. 2225
Stylish casing and base frame manufactured fromgalvanised sheet steel.Centrifugal impeller with backward curved blades,mounted on the rotor of an integral motor.
Accessories, see pages 41–59.
Fan type RDA 31–2528 ·/. 7190
Stylish casing manufactured from sheetaluminium.Base frame of galvanised sheet steel.Centrifugal impeller with backward curved blades,mounted on the rotor of an integral motor.
Accessories, see pages 41–59.
RDA 21– a b Y c d e f Y h i k l m p α
1819 410 195 341 25 M6 330 245 7 – 125 97 213 60°1822 410 195 341 25 M6 330 245 7 – 125 97 213 60°2225 410 195 341 25 M6 330 245 7 259 125 97 – 60°
RDA 21–1819 ·/. 1822 RDA 21–2225
Mains lead
Mains lead
Gebhardt genovent
Dimensions
29
RDA 32– a Y c d e f Y h i k l m n o α
2528 600 440 32 M6 440 330 12 286 138 138 328 525 6 x 60°2531 600 440 32 M6 440 330 12 286 138 138 328 525 6 x 60°3535 770 600 32 M8 570 450 12 395 216 192 440 675 8 x 45°3540 770 600 32 M8 570 450 12 395 216 192 440 675 8 x 45°3545 770 600 32 M8 570 450 12 395 216 192 440 675 8 x 45°4550 985 750 32 M8 730 590 14 487 282 222 458 760 6 x 60°4556 985 750 32 M8 730 590 14 487 282 222 458 760 6 x 60°5663 1225 940 40 M10 920 750 14 605 317 317 630 970 8 x 45°5671 1225 940 40 M10 920 750 14 605 317 317 630 970 8 x 45°5675 1225 940 40 M10 920 750 14 751 317 317 630 970 8 x 45°7180 1625 1270 65 M10 1230 1050 14 751 445 445 795 1270 8 x 45°7190 1625 1270 65 M10 1230 1050 14 751 445 445 795 1270 8 x 45°
RDA
Dimensions in mm, we reserve the right to make changes.
Fan type RDA 32–2528 ·/. 7190Noise attenuated version
Stylish casing manufactured from aluminium withsound absorbing lining.Base frame of galvanised sheet steel.Centrifugal impeller with backward curved blades,mounted on the rotor of an integral motor.
Accessories, see pages 41–59.
Mains lead
Gebhardt genovent
Technical Data
30
These types do not have thermal contacts and suitablemotor protection must be provided.
On request, at extra cost, speed controllable motors can besupplied.
genoventType rpm kW kW A IA/IN m3/h
RDM 31–2528–2D–10 2850 0.85 0.75 3.0/1.73 5.6 3 300 80 a
Sp
eed
max
. pow
erco
nsum
ptio
n P
1
Full
load
curr
ent
Nom
inal
mot
or r
atin
g
Sta
rtin
g/Fu
lllo
ad c
urre
nt r
atio
Mot
or s
ize
V· max
Three-phase a.c. 230/400 V, 50 Hz, single speed, 2-pole ∆/Y
RDM 31–2528–4D–04 1400 0.15 0.12 0.76/0.44 2.7 1 670 63 a
RDM 31–2531–4D–05 1400 0.21 0.18 1.0 /0.58 2.9 2 200 63 b
RDM 31–3535–4D–07 1380 0.35 0.25 1.32/0.76 3.0 3 370 71 a
RDM 31–3540–4D–10 1410 0.63 0.55 2.5 /1.45 3.9 4 700 80 a
RDM 31–3545–4D–11 1400 1.03 0.75 3.2 /1.86 4.2 5 750 80 b
RDM 31–4550–4D–14 1420 1.8 1.5 6.0 /3.45 5.0 9 450 90 L
RDM 31–4556–4D–17 1440 3.0 3.0 11.1 /6.4 5.5 11 400 100 Lb
RDM 31–5663–4D–21* 1455 5.8 5.5 11.4 /6.6 6.3 18 600 132 Sa
Three-phase a.c. 230/400 V, 50 Hz, single speed, 4-pole ∆/Y (* = 400/690 V)
RDM 31–2528–6D–04 950 0.09 0.06 0.59/0.34 2 1 090 63a
RDM 31–2531–6D–04 940 0.10 0.06 0.59/0.34 2 1 400 63 a
RDM 31–3535–6D–07 950 0.18 0.18 1.07/0.62 2.3 2 350 71 a
RDM 31–3540–6D–07 920 0.23 0.18 1.07/0.62 2.3 3 140 71 a
RDM 31–3545–6D–08 900 0.32 0.25 1.35/0.78 2.7 3 700 71 b
RDM 31–4550–6D–10 925 0.57 0.37 2.08/1.2 3.1 6 200 80 a
RDM 31–4556–6D–13 930 0.95 0.75 3.6 /2.1 3.7 7 300 90 S
RDM 31–5663–6D–16 945 1.61 1.5 6.8 /3.9 4.0 11 900 100 La
RDM 31–5671–6D–19 940 2.85 2.2 9.0 /5.2 4.6 14 500 112 M
RDM 31–7180–6D–23* 950 4.95 4.0 9.4 /5.4 4.5 25 000 132 Ma
RDM 31–7190–6D–26* 960 8.84 9.0 19.4 /11.2 6.2 33 500 160 Ma
Three-phase a.c. 230/400 V, 50 Hz, single speed, 6-pole ∆/Y (* = 400/690 V)
RDM 31–4556–8D–13 700 0.42 0.37 1.96/1.13 2.8 5 400 90 S
RDM 31–5663–8D–14 690 0.71 0.55 2.75/1.58 2.9 8 700 90 L
RDM 31–5671–8D–17 700 1.2 1.1 5.0 /2.9 3.6 10 800 100 Lb
RDM 31–7180–8D–21 705 2.26 2.2 9.9 /5.7 4.2 18 800 132 Sa
RDM 31–7190–8D–23 720 3.86 3.0 13.2 /7.6 4.4 24 000 132 Ma
Three-phase a.c. 230/400 V, 50 Hz, single speed, 8-pole ∆/Y
RDM 31–7180–BD–19 460 0.82 0.75 5.9 /3.5 2.6 11 700 112 M
RDM 31–7190–BD–21 470 1.25 1.1 7.0 /4.0 3.1 15 800 132 Sa
Three-phase a.c. 230/400 V, 50 Hz, single speed, 12-pole ∆/Y
RDM 31–3540–ID–11 1430/950 0.68/0.25 0.55/0.18 1.62/0.73 4.0/2.5 4 700/ 3 160 80 b
RDM 31–3545–ID–13 1430/950 1.05/0.35 0.8 /0.29 2.1 /1.05 4.3/3.4 5 750/ 3 700 90 S
RDM 31–4550–ID–16 1420/950 1.9 /0.65 1.7 /0.6 3.8 /1.75 5.2/4.2 9 450/ 6 200 100 La
RDM 31–4556–ID–19 1450/980 3.1 /1.0 3.0 /0.9 6.7 /3.0 6.1/4.5 11 400/ 7 300 112 M
RDM 31–5663–ID–23 1460/975 6.1 /2.0 5.4 /1.7 11.4 /4.55 6.6/5.1 18 600/12 500 132 Ma
Three-phase a.c. 400 V, 50 Hz, twin speed, 4/6-pole, 2 separate windings Y/Y
RDM 31–4550–KD–13 950/710 0.6/0.35 0.48/0.24 1.6 /1.05 3.3/2.4 6 200/ 4 700 90 S
RDM 31–4556–KD–16 940/710 1.0/0.5 0.9 /0.45 2.55/1.85 3.5/2.8 7 300/ 5 400 100 La
RDM 31–5663–KD–19 955/710 1.8/0.75 2.2 /1.0 5.45/3.05 5.0/3.6 11 900/ 8 700 112 M
RDM 31–5671–KD–24 950/715 2.9/1.3 3.5 /1.7 8.5 /5.4 4.5/4.5 14 500/10 800 132 Mb
RDM 31–7180–KD–26 965/730 5.3/2.5 5.5 /2.5 12.0 /6.7 5.1/4.5 25 000/18 800 160 Ma
Three-phase a.c. 400 V, 50 Hz, twin speed, 6/8-pole, 2 separate windings Y/Y
Centrifugal Roof Unitswith External Motor
RDMGebhardt genovent
31
Noise: The A-weighted sound power level LWA (= LWA3 = LWA8
in accordance with DIN 45 635, Part 38/BS 848, Part 2)for V· max and V· opt is given in the tables.See also section “Noise”.
2528–2D–10 88 86 27 0024–8D
2528–4D–04 71 69 22 0006–8D
2531–4D–05 72 69 24 0006–8D
3535–4D–07 75 72 34 0010–8D
3540–4D–10 79 77 38 0016–8D
3545–4D–11 83 82 41 0024–8D
4550–4D–14 88 85 60 0040–8D
4556–4D–17 91 90 71 0100–8D
5663–4D–21 96 89 145 0160–8D
2528–6D–04 65 63 22 0004–8D
2531–6D–04 65 64 23 0004–8D
3535–6D–07 66 63 34 0010–8D
3540–6D–07 68 67 35 0010–8D
3545–6D–08 72 70 38 0010–8D
4550–6D–10 75 74 53 0016–8D
4556–6D–13 80 79 59 0024–8D
5663–6D–16 83 81 124 0040–8D
5671–6D–19 88 88 135 0060–8D
7180–6D–23* 91 89 280 0100–8D
7190–6D–26* 94 93 320 0200–8D
4556–8D–13 72 71 59 0016–8D
5663–8D–14 76 74 115 0024–8D
5671–8D–17 79 77 130 0040–8D
7180–8D–21 84 82 275 0060–8D
7190–8D–23 87 85 290 0100–8D
7180–BD–19 72 70 237 0040–8D
7190–BD–21 77 75 262 0060–8D
3540–ID–11 79/68 77/67 38 9006–8D
3545–ID–13 83/72 82/70 44 9007–8D
4550–ID–16 88/75 85/74 66 9009–8D
4556–ID–19 91/80 90/79 80 9012–8D
5663–ID–23 96/87 89/80 169 9014–8D
4550–KD–13 75/68 74/67 65 9007–8D
4556–KD–16 80/72 79/71 70 9009–8D
5663–KD–19 83/76 81/74 140 9011–8D
5671–KD–24 88/79 88/77 169 9012–8D
7180–KD–26 91/84 89/82 345 9015–8D
genoventType RDM dB dB kg EUM 33–
app
rox.
wei
ght
L WA
at V·
max
L WA
at V·
opt
Performance curves, see page 34 – 38Dimensions, see page 39Accessories, see page 41 – 59
Mot
or P
rote
ctio
nU
nit
(EU
M 3
3-90
00co
nsis
ting
of2
units
EU
M 3
3)
Gebhardt genovent
RD
M
Technical Data
32
These types do not have thermal contacts.Suitable motor protection must be provided Explosion-proofed motors must be installed in accordance withDIN 57 165/VDE 0165.
See “Technical Description”, for Ex-Version fans.
genoventType rpm kW kW A IA/IN m3/h
Sp
eed
max
. pow
erco
nsum
ptio
n P
1
Full
load
cur
rent
Nom
inal
mot
or r
atin
g
Sta
rtin
g/Fu
llcu
rren
t ra
tio
Mot
or s
ize
V· max
RDM 31–2528–4X–04 1400 0.14 0.12 0.8 /0.46 3.1 1 670 63 a
RDM 31–2531–4X–05 1400 0.23 0.18 1.11/0.64 3.4 2 200 63 b
RDM 31–3535–4X–07 1375 0.34 0.25 1.37/0.79 3.8 3 370 71 a
RDM 31–3540–4X–10 1410 0.61 0.55 2.62/1.51 4.3 4 700 80 a
RDM 31–3545–4X–13 1420 1.1 1.0 4.07/2.35 5.7 5 750 90 S
RDM 31–4550–4X–14 1410 1.75 1.35 5.5 /3.2 6.2 9 450 90 L
RDM 31–4556–4X–17 1410 3.1 2.5 9.4 /5.4 6.0 11 400 100 Lb
RDM 31–5663–4X–21* 1445 5.6 5.0 9.7 /5.6 7.3 18 600 132 Sa
Three-phase a.c. 230/400 V, 50 Hz, single speed, 4-pole ∆/Y, EExe II T 3 (* = 400/690 V)
RDM 31–3540–6X–08 940 0.21 0.25 1.49/0.86 3.1 3 140 71 b
RDM 31–3545–6X–08 900 0.35 0.25 1.49/0.86 3.1 3 700 71 b
RDM 31–4550–6X–10 920 0.51 0.37 2.17/1.25 3.1 6 200 80 a
RDM 31–4556–6X–14 920 1.05 0.95 4.42/2.55 3.8 7 300 90 L
RDM 31–5663–6X–19 945 2.0 1.9 7.8 /4.5 4.5 11 900 112 M
RDM 31–5671–6X–21 955 2.9 2.6 9.7 /5.6 6.6 14 500 132 Sa
RDM 31–7180–6X–24* 955 5.2 4.8 10.1 /5.8 6.4 25 000 132 Mb
RDM 31–7190–6X–28* 960 9.7 9.7 19.4 /11.2 7.6 33 500 160 L
Three-phase a.c. 230/400 V, 50 Hz, single speed, 6-pole ∆/Y, EExe II T 3 (* = 400/690 V)
RDM 31–3540–GD–10 1400/720 0.62/0.15 0.5/0.1 1.28/0.57 4.1/2.3 4 700/ 2 200 80 a
RDM 31–3545–GD–13 1400/700 1.05/0.21 1.0/0.22 2.4 /1.25 3.7/2.4 5 750/ 2 980 90 S
RDM 31–4550–GD–14 1400/700 1.9 /0.35 1.5/0.33 3.3 /1.8 4.2/2.6 9 450/ 4 700 90 L
RDM 31–4556–GD–17 1400/700 3.1 /0.5 2.5/0.65 5.3 /2.8 5.4/3.1 11 400/ 5 400 100 Lb
RDM 31–5663–GD–23 1455/720 5.9 /0.78 6.4/1.4 13.3 /4.4 6.8/4.6 18 600/ 9 200 132 Ma
Three-phase a.c. 400 V, 50 Hz, twin speed, 4/8-pole, Dahlander connection YY/Y
RDM 31–3545–HD–10 935/425 0.35/0.09 0.3 /0.075 1.0 /0.44 3.5/1.9 3 700/ 1 900 80 a
RDM 31–4550–HD–14 965/460 0.6 /0.12 0.55/0.12 2.0 /0.88 4.1/1.8 6 200/ 3 000 90 L
RDM 31–4556–HD–16 940/460 1.0 /0.2 1.1 /0.18 2.85/1.09 4.0/1.9 7 300/ 3 750 100 La
RDM 31–5663–HD–19 955/450 2.0 /0.4 1.8 /0.45 5.1 /2.0 4.5/2.9 11 900/ 5 900 112 M
RDM 31–5671–HD–24 965/480 3.2 /0.7 3.3 /0.7 6.8 /2.5 4.7/2.5 14 500/ 7 400 132 Mb
RDM 31–7180–HD–23 960/480 5.1 /1.2 4.4 /0.9 9.1 /3.2 5.0/2.5 25 000/12 000 132 Ma
RDM 31–7190–HD–26 975/485 9.0 /2.0 9.0 /2.0 18.5 /6.2 6.2/3.1 33 500/15 800 160 Ma
Three-phase a.c. 400 V, 50 Hz, twin speed, 6/12-pole, Dahlander connection YY/Y
Centrifugal Roof Unitswith External Motor
RDMGebhardt genovent
33
2528–4X–04 71 69 23 0006–8D 5
2531–4X–05 72 69 25 0010–8D 5
3535–4X–07 75 72 35 0010–8D 5
3540–4X–10 79 77 38 0016–8D 5
3545–4X–13 83 82 44 0024–8D 5
4550–4X–14 88 85 60 0040–8D 5
4556–4X–17 91 90 71 0060–8D 5
5663–4X–21 96 89 159 0060–8D 5
3540–6X–08 68 67 35 0010–8D 5
3545–6X–08 72 70 38 0010–8D 5
4550–6X–10 75 74 54 0016–8D 5
4556–6X–14 80 79 62 0040–8D 5
5663–6X–19 83 81 127 0060–8D 5
5671–6X–21 88 88 148 0060–8D 5
7180–6X–24 91 89 288 0160–8D 5
7190–6X–28 94 93 346 0200–8D 5
3540–GD–10 79/65 77/64 40 9004–8D
3545–GD–13 83/66 82/65 44 9008–8D
4550–GD–14 88/68 85/67 60 9009–8D
4556–GD–17 91/72 90/71 71 9011–8D
5663–GD–23 96/79 89/72 169 9014–8D
3545–HD–10 72/57 70/55 42 9004–8D
4550–HD–13 75/57 74/56 60 9006–8D
4556–HD–14 80/62 79/61 65 9009–8D
5663–HD–19 83/65 81/63 142 9010–8D
5671–HD–21 88/70 88/69 169 9012–8D
7180–HD–23 91/72 89/70 309 9012–8D
7190–HD–28 94/77 93/75 374 9016–8D
genoventType RDM dB dB kg EUM 33–
app
rox.
wei
ght
L WA
at V·
max
L WA
at V·
opt
Noise: The A-weighted sound power level LWA (= LWA3 = LWA8
in accordance with DIN 45 635, Part 38/BS 848, Part 2)for V· max and V· opt is given in the tables.See also section “Noise”.
Performance curves, see page 34 – 38Dimensions, see page 39Accessories, see page 41 – 59
Mot
or P
rote
ctio
nU
nit
(EU
M 3
3-90
00co
nsis
ting
of2
units
EU
M 3
3)
5 The motor protection units EUM 33– are not spark orexplosion proof rated. They must not be installed inhazardous areas.
Gebhardt genovent
34
In the performance graphs the A-weighted sound powerlevel LWA (= LWA3 = LWA8 in accordance with DIN 45 635,Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDM 31–2528RDM 31–2531
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
volume V·
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
faef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
2528-2D-10
= V· opt
2528-4D-042528-4X-04
= V· opt
2531-4D-052531-4X-05
= V· opt
2528-6D-04
= V· opt
2531-6D-04= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
35
In the performance graphs the A-weighted sound powerlevel LWA (= LWA3 = LWA8 in accordance with DIN 45 635,Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDM 31–3535RDM 31–3540RDM 31–3545
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
volume V·
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
faef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
3535-4D-073535-4X-07
= V· opt
3540-4D -10 13540-JD -11 1 23540-GD-10 1 33540-4X -10 1
= V· opt
3545-4D -11 13545-JD -13 1 23545-GD-13 1 33545-4X -13 1
= V· opt
3535-6D-07
= V· opt
3540-6D-073540-6X-08
= V· opt
3545-6D-0813545-HD-10123545-6X -081
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
36
In the performance graphs the A-weighted sound powerlevel LWA (= LWA3 = LWA8 in accordance with DIN 45 635,Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDM 31–4550RDM 31–4556
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
4550-4D -14 14550-JD -16 1 24550-GD-14 1 34550-4X -14 1
= V· opt
4556-4D -17 14556-JD -19 1 24556-GD-17 1 34556-4X -17 1
= V· opt
4550-6D -10 14550-KD -13 1 24550-HD-13 1 34550-6X -10 1
= V· opt
4556-6D -13 14556-8D -13 14556-KD -16 1 24556-HD-14 1 34556-6X -14 1
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
37
In the performance graphs the A-weighted sound powerlevel LWA (= LWA3 = LWA8 in accordance with DIN 45 635,Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDM 31–5663RDM 31–5671
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
volume V·
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
faef
fect
ive
pre
ssu
re in
crea
se ∆
pfa
5663-8D-14= V· opt
5671-6D -19 15671-KD -24 1 25671-HD-21 1 35671-6X -21 1
= V· opt
5663-6D -16 15663-KD-19 1 25663-HD-19 1 35663-6X -19 1
= V· opt
5671-8D-17
= V· opt
5663-4D -21 15663-ID -23 1 25663-GD-23 1 35663-4X -21 1
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
38
In the performance graphs the A-weighted sound powerlevel LWA (= LWA3 = LWA8 in accordance with DIN 45 635,Part 38/BS 848, Part 2) is given.See also section “Noise”.
RDM 31–7180RDM 31–7190
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
volume V·
volume V·
effe
ctiv
e p
ress
ure
incr
ease
∆p
fa
7180-6D -23 17180-KD -26 1 27180-HD-23 1 37180-6X -24 1
= V· opt
7190-6D -2617190-HD-26127190-6X -281
= V· opt
7180-8D -21 17180-BD-19 2
= V· opt
7190-8D -23 17190-BD-21 2
= V· opt
Reference gas density 1 = 1.15 kg/m3
Gebhardt genovent
Dimensions
39
RDM 31–RDM 32– a Y c d e f Y h i k l m n o α
2528 600 440 32 M6 440 330 12 286 138 138 328 525 6 x 60°2531 600 440 32 M6 440 330 12 286 138 138 328 525 6 x 60°3535 770 600 32 M8 570 450 12 395 216 192 440 675 8 x 45°3540 770 600 32 M8 570 450 12 395 216 192 440 675 8 x 45°3545 770 600 32 M8 570 450 12 395 216 192 440 675 8 x 45°4550 985 750 32 M8 730 590 14 487 282 222 458 760 6 x 60°4556 985 750 32 M8 730 590 14 487 282 222 458 760 6 x 60°5663 1225 940 40 M10 920 750 14 605 317 317 630 970 8 x 45°5671 1225 940 40 M10 920 750 14 605 317 317 630 970 8 x 45°7180 1625 1270 65 M10 1230 1050 14 751 445 500 795 1270 8 x 45°7190 1625 1270 65 M10 1230 1050 14 751 445 500 795 1270 8 x 45°
RDM
Dimensions in mm, we reserve the right to make changes.
Fan type RDM 31–2528 ·/. 7190
Stylish casing manufactured from aluminium.Base frame of galvanised sheet steel.Centrifugal impeller with backward curved blades,assembled to the shaft of a standard motor.
Fan type RDM 32–2528 ·/. 7190
Details as above, but casing also includes sound-absorbing lining.
Accessories, see pages 41–59.
Mains lead
Gebhardt genovent
40
Technical Data, Dimensions
a b Y c d e f Y h i k α approx.weight kg
Roof Cowl
Roof Cowl ZLH 30–0250 ·/. 0710Stylish casing manufactured from aluminium.Base frame of galvanised sheet steel,with aerodynamic outlets.
Roof cowls are for weatherproofing, they protectventilation apertures in the roof, or external ducting ofmachanical ventilation systems.They are suitable for either intake or dischargeapplications.
The flow losses that arise in the roof cowl are shownin their respective diagrams.
Accessories, see pages 41 – 45.
Pressure decrease in roof cowls – discharge mode Pressure decrease in roof cowls – intake mode
ZLH 30–0250 600 330 440 32 M6 440 330 12 286 6 x 60° 7
ZLH 30–0355 770 405 600 32 M8 570 450 12 395 8 x 45° 10
ZLH 30–0450 985 510 750 32 M8 730 590 14 487 6 x 60° 20
ZLH 30–0560 1225 640 940 40 M10 920 750 14 605 8 x 45° 35
ZLH 30–0710 1625 870 1270 65 M10 1230 1050 14 751 8 x 45° 60
Dimensions in mm, we reserve the right to make changes.
ZLHTo
tal p
ress
ure
dec
reas
e P A
Volume V· Volume V·
Pre
ssu
re d
ecre
ase
P A
Total pressure includesthe dynamic loss at thedischarge area
Gebhardt genovent
Accessories – Summary
41
Gebhardt genoventRDA…–2528 ·/. 7190RDM…–2528 ·/. 7190
1 = Flat roof upstand2 = Soaker sheet
(for corrugated roofs)3 = Upstand silencer4 = Inlet flexible connection5 = Mating flange6 = Mesh inlet guard7 = Inlet silencer8 = Flanged inlet cone
Accessories not shownFlat roof upstand-highUpstand for inclined roofConnection plateMotor drive for discharge shutterMotor protection unitSpeed selectorSpeed controllerCorrosion-proofing
Gebhardt genoventRDA 21–1819 ·/. 2225
1 = Flat roof upstand2 = Soaker sheet
(for corrugated roofs)3 = Upstand silencer4 = Inlet flexible connection5 = Mating flange6 = Mesh inlet guard
Accessories not shownFlat roof upstand-highUpstand for inclined roofConnection plateAutomatic inlet shutterMotor protection unitSpeed selectorSpeed controllerCorrosion-proofing
Gebhardt genoventZLH 30–0250 ·/. 0710
1 = Flat roof upstand2 = Soaker sheet
(for corrugated roofs)4 = Inlet flexible connection5 = Mating flange
Accessories not shownFlat roof upstand-highUpstand for inclined roofConnection plate
Gebhardt genovent
Acc
esso
ries
/Z
LH
42
1 The inlet silencer ZDR has been designed for use with ourflat roof upstand ZBS.If other roof upstands are used, the dimensions and fixingsof the silencer are shown on page 47.
2 Shutter actuator ILA 04 is exclusively available for the rangesRDM 31, RDM 32 and RDA 32
For dimensions see following pages.
Accessories
1819 ZBS ..–0031 ZBS ..–0031 ZDS ..–0028 ZBU 01–0028–18 ZBS 09–0031 ZBS 11–0031
1822 ZBS ..–0031 ZBS ..–0031 ZDS ..–0028 ZBU 01–0028–18 ZBS 09–0031 ZBS 11–0031
2225 ZBS ..–0031 ZBS ..–0031 ZDS ..–0028 ZBU 01–0028–22 ZBS 09–0031 ZBS 11–0031
2528 ZBS ..–0040 ZBS ..–0040 ZDS ..–0040 ZBU 01–0040–25 ZBS 09–0040 ZBS 11–0040
2531 ZBS ..–0040 ZBS ..–0040 ZDS ..–0040 ZBU 01–0040–25 ZBS 09–0040 ZBS 11–0040
3535 ZBS ..–0056 ZBS ..–0056 ZDS ..–0056 ZBU 01–0056–35 ZBS 09–0056 ZBS 11–0056
3540 ZBS ..–0056 ZBS ..–0056 ZDS ..–0056 ZBU 01–0056–35 ZBS 09–0056 ZBS 11–0056
3545 ZBS ..–0056 ZBS ..–0056 ZDS ..–0056 ZBU 01–0056–35 ZBS 09–0056 ZBS 11–0056
4550 ZBS ..–0071 ZBS ..–0071 ZDS ..–0071 ZBU 01–0071–45 ZBS 09–0071 ZBS 11–0071
4556 ZBS ..–0071 ZBS ..–0071 ZDS ..–0071 ZBU 01–0071–45 ZBS 09–0071 ZBS 11–0071
5663 ZBS ..–0090 ZBS ..–0090 ZDS ..–0090 ZBU 01–0090–56 ZBS 09–0090 ZBS 11–0090
5671 ZBS ..–0090 ZBS ..–0090 ZDS ..–0090 ZBU 01–0090–56 ZBS 09–0090 ZBS 11–0090
5675 ZBS ..–0090 ZBS ..–0090 ZDS ..–0090 ZBU 01–0090–71 ZBS 09–0090 ZBS 11–0090
7180 ZBS ..–0125 ZBS ..–0125 ZDS ..–0125 ZBU 01–0125–71 ZBS 09–0125 –
7190 ZBS ..–0125 ZBS ..–0125 ZDS ..–0125 ZBU 01–0125–71 ZBS 09–0125 –
gen
ove
ntR
DA
/RD
M
Flat
roo
f up
stan
dZ
BS
01
(alu
.)Z
BS
20
(g.s
.st.)
Flat
roo
f up
stan
d-h
igh
ZB
S 1
3 (a
lu.)
ZB
S 2
3 (g
.s.s
t.)
Up
stan
d s
ilenc
erZ
DS
01
(alu
.)Z
DS
20
(g.s
.st.)
Con
nect
ion
pla
te
1819 ZKE 11–0180 ZKF 11–0180 ZSG 04–0180 – – – ZLK 01–0180
1822 ZKE 11–0180 ZKF 11–0180 ZSG 04–0180 – – – ZLK 01–0180
2225 ZKE 13–0225 ZKF 11–0225 ZSG 04–0225 – – – ZLK 03–0225
2528 ZKE 11–0250 ZKF 11–0250 ZSG 04–0250 ZDR 30–0250 ZKD 01–0250 ILA 01–2528 – 2
2531 ZKE 11–0250 ZKF 11–0250 ZSG 04–0250 ZDR 30–0250 ZKD 01–0250 ILA 01–2531 – 2
3535 ZKE 11–0355 ZKF 11–0355 ZSG 04–0355 ZDR 30–0355 ZKD 01–0355 ILA 01–3535 –
3540 ZKE 11–0355 ZKF 11–0355 ZSG 04–0355 ZDR 30–0355 ZKD 01–0355 ILA 01–3540 – 2
3545 ZKE 11–0355 ZKF 11–0355 ZSG 04–0355 ZDR 30–0355 ZKD 01–0355 ILA 01–3545 – 2
4550 ZKE 11–0450 ZKF 11–0450 ZSG 04–0450 ZDR 30–0450 ZKD 01–0450 ILA 01–4550 –
4556 ZKE 11–0450 ZKF 11–0450 ZSG 04–0450 ZDR 30–0450 ZKD 01–0450 ILA 01–4556 –
5663 ZKE 11–0560 ZKF 11–0560 ZSG 04–0560 ZDR 30–0560 ZKD 01–0560 ILA 01–5663 –
5671 ZKE 11–0560 ZKF 11–0560 ZSG 04–0560 ZDR 30–0560 ZKD 01–0560 ILA 01–5671 –
5675 ZKE 11–0710 ZKF 11–0710 ZSG 04–0710 – ZKD 01–0710 ILA 01–5675 –
7180 ZKE 11–0710 ZKF 11–0710 ZSG 04–0710 ZDR 30–0710 ZKD 01–0710 ILA 01–7180 –
7190 ZKE 11–0710 ZKF 11–0710 ZSG 04–0710 ZDR 30–0710 ZKD 01–0710 ILA 01–7190 –
gen
ove
ntR
DA
/RD
M
Inle
t fle
xib
leco
nnec
tion
Inle
t si
lenc
er
Flan
ged
inle
t co
ne
Mot
or d
rive
for
dis
char
ge s
hutte
r
Aut
omat
ic in
let
shut
ter
(RD
A 2
1–)
Accessories
Accessories
†
Up
stan
d f
orin
clin
ed r
oof
(alu
.)
Soa
ker
shee
t(f
or c
orru
gate
d r
oof)
Inle
t m
atin
g fla
nge
Mes
h in
let
guar
d
Dimensions in mm, we reserve the right to make changes.
Accessories
43
ZKE
ZKE 11–0180 183 213 233 6 x 7 0.7
ZKE 13–0225 229 259 279 6 x 7 1.0
ZKE 11–0250 256 286 306 6 x 7 1.4
ZKE 11–0355 361 395 421 8 x 9.5 2.1
ZKE 11–0450 453 487 513 6 x 9.5 2.7
ZKE 11–0560 569 605 639 8 x 11.5 3.6
ZKE 11–0710 715 751 785 8 x 11.5 5
a b c z x dApprox.weight kg
Inlet connection (flexible) prevents the transmission of vibration to other parts of theinstallation. Standard types are suitable for a temperature of + 120 °C.Flange dimensions are in accordance with DIN 24 155, Sheet 2.
ZSG 04–0180 213 3 x l 7
ZSG 04–0225 259 3 x l 7
ZSG 04–0250 286 3 x l 7
ZSG 04–0355 395 4 x l 9.5
b z x d
ZSG 04–0450 487 3 x l 9.5
ZSG 04–0560 605 4 x l 11.5
ZSG 04–0710 751 4 x l 11.5
b z x d
ZSG Mesh inlet guard, in accordance with DIN 24 167.
ZKF 11–0180 183 213 233 25 6 x l 7 0.3
ZKF 13–0225 229 259 279 25 6 x l 7 0.5
ZKF 11–0250 256 286 306 25 6 x l 7 0.7
ZKF 11–0355 361 395 421 30 8 x l 9.5 0.9
ZKF 11–0450 453 487 513 30 6 x l 9.5 1.2
ZKF 11–0560 569 605 639 35 8 x l 11.5 1.5
ZKF 11–0710 715 751 785 35 8 x l 11.5 2.5
a b c e z x dApprox.weight kg
Mating flange, for joining an internal duct to the roof unit base.Flange dimensions are in accordance with DIN 24 155, Sheet 2.
Automatic shutters for the inlet side of roof unitsRDA 21–1819 ·/· 2225.
ZLK 01–0180 183 213 233 110 125 6 x l 7 1.5
ZLK 03–0225 229 259 279 135 150 6 x l 7 2.8
a b c e f z x dApprox.weight kg
ZLK
ZKF
Dimensions in mm, we reserve the right to make changes.
Accessories
44
11–0031 245 200 920 M 6 1600 Y 275 11
11–0040 330 200 920 M 10 1600 Y 360 11
11–0056 450 200 920 M 10 1600 Y 420 12
11–0071 590 200 1400 M 12 2000 Y 560 29
11–0090 750 200 1400 M 12 2000 Y 720 36
ZBS b c d f g hApprox.weight kg
Soaker sheets WDS, in glass fibre reinforced polyester, solve the problem of fitting aroof unit to a corrugated roof (“Pitch length” of corrugation 177 mm) with up to 25°pitch.
ZBS 11
Attention!ILA must not be used with sparkrated fans types.
Upstand for inclined roof made of aluminium sheet, provided with sound and thermalinsulation, available in steps of 5 degrees from 0 to 45 degrees roof inclination.
Order code (example): ZBS 09-0040-30Upstand for inclined roof for RDA 31–3540–4D, roof inclination 30°.
ZBS a b d f g hApprox.weight kg
09–0031-.. † 290 245 590 M 6 250 150 409–0040-.. † 390 330 690 M 10 250 150 509–0056-.. † 550 450 850 M 10 250 150 609–0071-.. † 700 590 1000 M 12 250 150 909–0090-.. † 890 750 1190 M 12 250 150 1309–0125-.. † 1200 1050 1500 M 12 250 150 18
ZBS 09
† = Indicate standard inclination (α = 05, 10, 15, 20, 25, 30, 35, 40, 45)
ILA Motor drive for discharge shutterThe drive for the discharge shutter consists of a geared motor, connected to theshutter by cables. Switching on the motor opens the shutter to its maximum extent,on motor shutdown it closes by means of a spring-loaded return.The motor can be operated in conjunction with or independent of the fan drive motor,so that ventilation by convection can occur even with the fan switched off.The shutter motor is short circuit proof. If the shutter is open and the armatureblocked, the current stays on.When using variable speed control, the shutter motor must be connected before thecontroller, so that this can always operate at the nominal current.
Technical Data:
Motor for discharge shutter ILA…
Nominal voltage 230 VNominal frequency 50 HzShort-circuit 0.2 Acurrent consumption
Fan drivemotor
Shuttermotor
circuitprotectionfuse 0.63 A
Dimensions in mm, we reserve the right to make changes.
45
Accessories
Alu. g.s.st. Alu. g.s.st.ZBS ZBS a b b1 d1 f kg kg
13–0031 23–0031 278 245 765 518 M 6 5 10
13–0040 23–0040 378 330 650 618 M 10 6 12
13–0056 23–0056 538 450 800 778 M 10 7 14
13–0071 23–0071 688 590 900 988 M 12 10 20
13–0090 23–0090 878 750 900 1178 M 12 16 32
13–0125 23–0125 1226 1050 900 1526 M 12 20 40
Roof fan Approx.RDA/RDM 31/32- ZBU d1 h k z x M weight kg
RDA 21–1819 / 1822 01–0028-18 518 183 213 6 x M 6 2RDA 21–2225 01–0028-22 518 229 259 6 x M 6 22528 / 2531 01–0040-25 618 256 286 6 x M 6 43535 / 3540 / 3545 01–0056-35 778 361 395 8 x M 8 64550 / 4556 01–0071-45 988 453 487 6 x M 8 9.55663 / 5671 01–0090-56 1178 569 605 8 x M 10 175675 01–0090-71 1178 715 751 8 x M 10 177180 / 7190 01–0125-71 1526 715 751 8 x M 10 36
Ready-to-fit Flat roof upstand made of aluminium (ZBS 01) or galvanised sheet steel(ZBS 20), enabling fast and economical fitting of units to flat or up to 25° pitch roofs.
Alu. g.s.st. Alu. g.s.st.ZBS ZBS a a1 b d f Y/øh kg kg
01–0031 20–0031 295 300 245 610 M 6 – 3 601–0040 20–0040 395 400 330 710 M 10 290 4 801–0056 20–0056 555 560 450 870 M 10 395 5 1001–0071 20–0071 705 710 590 1020 M 12 525 8 1601–0090 20–0090 895 900 750 1210 M 12 650 12.5 2501–0125 20–0125 1205 1210 1050 1520 M 12 850 17 34
Any upstand pre-constructed on-site must have an internal opening at least as large as thevalues in column “h” of the table.
Flat roof upstand made of aluminium (ZBS 13) or galvanised sheet steel (ZBS 23), withsound absorbing and thermal lining.
ZBS
Connection plate made of galvanised steel sheet with threaded bolts for fixing a flangedduct.The connection plate has to be integrated into the roof with upstand silencer ZDS 01,ZDS 20 or upstand ZBS 01, ZBS 20, ZBS 13, ZBS 23 in order enable an easy connectionof ductwork.
Connection plate
ZBS 01
Dimensions in mm, we reserve the right to make changes.
Accessories
46
Upstand silencer for the inlet side. The exterior skin is made of aluminium (ZDS 01)or galvanised sheet steel (ZDS 20).ZDS..–0040 and ZDS ..–0056 with removable absorber lining.
Noise reduction values
Average noise Noise reduction in dB at centre frequencies in Hzreduction
ZDS (LWA) dB 63 125 250 500 1000 2000 4000 8000
..–0040 16 3 5 8 13 19 23 21 15
..–0056 16 3 5 8 12 18 21 20 15
..–0063 15 3 5 8 14 19 22 16 15
..–0071 17 3 5 9 13 20 25 22 17
..–0090 15 2 5 8 11 17 21 19 13
..–0100 17 3 6 9 14 21 26 23 17
..–0125 16 3 6 8 14 20 25 23 11
Pressure drop
ZDS
Connection plate ZBU 01For direct connection of a duct to the upstand silencer aconnection plate ZBU is available as an accessory.The connection plate is to be integrated into the roof surface together withthe upstand silencer.
ZDS 01–0028 withinlet shutterZLK 01– 0180 or ZLK 03–0225
AluminiumZDS a b b1 b2 b21 b3 b4 d1 f kg
01–0028 278 245 765 – 250 240 190 518 M 6 1101–0040 378 330 650 115 – 340 270 618 M 10 1301–0056 538 450 800 115 – 500 430 778 M 10 2901–0071 688 590 900 115 – 650 580 988 M 12 5701–0090 878 750 900 115 – 840 770 1178 M 12 7601–0125 1226 1050 900 115 – 1190 1117 1526 M 12 130
galv. steelZDS a b b1 b2 b21 b3 b4 d1 f kg
20–0028 278 245 765 – 250 240 190 518 M 6 1520–0040 378 330 650 115 – 340 270 618 M 10 1820–0056 538 450 800 115 – 500 430 778 M 10 4020–0071 688 590 900 115 – 650 580 988 M 12 7920–0090 878 750 900 115 – 840 770 1178 M 12 10520–0125 1226 1050 900 115 – 1190 1117 1526 M 12 180
Dimensions
ZDS 01- made of aluminium
ZDS 20- made of galvanised sheet steel
volume V·
pres
sure
dro
p p A
Accessories
47
Dimensions in mm, we reserve the right to make changes.
ZDR 30–0250 7 0 3 5 10 14 13 8 7
ZDR 30–0355 8 2 4 6 12 16 14 10 8
ZDR 30–0450 12 2 4 8.5 17 20 15 12 10
ZDR 30–0560 13 3 5 9 17 21 15 12 10
ZDR 30–0710 13 3 5 10 18 22 16 12 10
Average noisereduction
Noise reduction in dB at centre frequencies in Hz
(LWA) dB 63 125 250 500 1000 2000 4000 8000
ZDR 30–0250 0040 286 330 12 256 345 750 6 x M6 12
ZDR 30–0355 0056 395 450 12 361 500 750 8 x M8 17
ZDR 30–0450 0071 487 590 14 453 650 1000 6 x M8 22
ZDR 30–0560 0090 605 750 14 569 770 1000 8 x M8 50
ZDR 30–0710 0125 751 1050 14 715 915 1000 8 x M8 75
b b1 d d1 d2 e z x d kg
ZDR Inlet silencerThe tubular inlet silencer has a square flange on the side nearest to the roof unit,for bolting to the respective flat roof upstand. It slides inside the upstand, while theopposite end can take either additional ducting or an inlet cone.
The exterior skin is made of galvanised sheet steel, and the interior of galvanisedperforated plate, the cavity between them is filled with non-flammable acousticmaterial.There is no central core of material, so that any pressure loss will be insignificant.
ZKD Flanged inlet coneThe flanged inlet cone is for mounting under the inlet silencer, farthest from the unit,if no additional ducting is planned.This improves the intake flow environment and reduces losses.
Noise reduction values
to f
itfla
t ro
of u
pst
and
ZS
BS
01–
app
rox.
wei
ght
ZKD 01–0250 286 422 71 6 x l 7 2.0
ZKD 01–0355 395 515 63 8 x l 9.5 3.5
ZKD 01–0450 487 640 120.5 6 x l 9.5 5.0
ZKD 01–0560 605 785 77.5 8 x l 11.5 7.5
ZKD 01–0710 751 905 175 8 x l 11.5 10
Approx.b d3 ca. e z x d weight kg
Switches, Regulators and Controllers
EUM 33
48
Motor protection unit for three-phasecurrent motors (standard motors)without thermal contacts
DesignPlastic casing in protection class IP 55,permissible ambient temperature +40 °C, 40 – 60 Hz, frontal operation,for wall mounting.Motor protection unit for single-speed,non- variable speed three-phase currentmotors without thermal contacts.
FunctionThe motor protection units must beadjusted on site to the correspondingnominal motor current. In the preset nominal current isexceeded, the device disconnects themotor from the mains supply via athermal overload release.Pressing the “on key” causes the unit toturn on again.
All motor protection units EUM 33-…are also suitable for the protection ofEExe-motors (PTB-Prüfung Gesch-Nr.3.35/386.3060).They must however be mountedoutside of explosion endangered areas,since they are not themselves designedwith explosion protection.
Technical DataContinuous flow Setting range max. rated power AC-3
EUM in A in A in kW
33-0004-8D 0.4 0.24 ·/. 0.4 0.0933-0006-8D 0.6 0.4 ·/. 0.6 0.1233-0010-8D 1.0 0.6 ·/. 1.0 0.2533-0016-8D 1.6 1.0 ·/. 1.6 0.5533-0024-8D 2.4 1.6 ·/. 2.4 0.833-0040-8D 4.0 2.4 ·/. 4.0 1.533-0060-8D 6.0 4.0 ·/. 6.0 2.533-0100-8D 10.0 6.0 ·/. 10.0 4.033-0160-8D 16.0 10.0 ·/. 16.0 7.533-0200-8D 20.0 16.0 ·/. 20.0 9.033-0250-8D 25.0 20.0 ·/. 25.0 12.5
L3PE
L2L1
1 3 5
2 4 6
U1 V1 W1
EUM33
Dimensions in mm, subject to change (without notice)EUM 33
Connection diagramEUM 33
Switches, Regulators and Controllers
Motor protection unit for motors withfitted thermal contacts
DesignBeautifully shaped, two-tone plastic ca-sing made of shock resistant polystyrol,protection class IP 54.All units are suitable for wall mountingand include: hand switches for frontaloperation, operational signal lamp andcontrol safety accessible from outside.Permissible ambient temperature:40 °C.
FunctionShould the motor winding temperaturerise excessively, the imbedded motorwinding thermalcontact will open thecontrol circuit, causing the mains relayto drop out and thus disconnect themotor from the mains supply.The motor will also be turned off in thecase of a mains-side dropout of thecontrol phase, as well as if the contactsfail or if the mains supply is interrupted.The motor protection units are notequipped with an automatic re-power-on after a mains voltage failure and arethus fail-safe.After the motor windings have cooleddown, a lock-out device in the relay cir-cuit prevents the motor from switchingitself on. The hand switch must first bemomentarily turned to the 0-positionand then back to the ‘on’ position.The operational signal lamp indicatesthe operation of the motor. It goes outin the case of a malfunction.The motor protection units are suitablefor group switching, i. e. several motorswith the same switching can be con-nected to a common switchingdevice.The sum of the motors’ rated powermay not exceed the maximal devicerated power. The thermal contacts of allmotors are to be switched in series.
ESM 01
Technical Datamax. Nominal Weightpermissible voltageMotors-rated power
ESM kW Volt kg
01-0020-5E 2.0 230 1.201-0040-8D 4.0 400 1.202-0040-8D 4.0 400 1.203-0040-8D 4.0 400 1.204-0040-8D 4.0 400 1.2
Dimensions in mm,subject to change (without notice)ESM
49
Switches, Regulators and Controllers
Energy-saving transformerswith 7 secondary taps
DesignTransformer according to DIN VDE0550-1 with built-on terminal strip for 7taps, without casing, suitable for controlcabinet installation.Two transformers are necessary forthree-phase current, which are to beconnected in a V-switchingconfiguration (see Wiring diagram).Permissible ambient temperature atnominal current loading max. 35 °C.
ETO 10-…-EPrimary voltage: 230 V/50-60 HzSecondary voltage:230/180/160/140/120/100/80 V
ETO 10-…-DPrimary voltage: 400 V/50-60 HzSecondary voltage:400/310/270/235/200/170/140 V
Technical data/Dimensions in mm, subject to change (without notice)alternating current modelNominal current
ETO A a b c d e øf h kg
10-0018-5E 1.8 78 57 92 68 56 4.8 44 1.510-0040-5E 4 96 76 107 62 84 5.8 60 2.510-0070-5E 7 120 85 126 89 90 5.8 69 4.510-0130-5E 13 135 102 135 103 104 5.8 86 7.010-0220-5E 22 135 150 135 151 104 5.8 134 12.5
Three-phase current modelNominal current
ETO A a b c d e øf h kg
10-0010-8D 1 78 57 92 68 56 4.8 44 1.510-0020-8D 2 96 76 107 62 84 5.8 60 2.510-0040-8D 4 120 85 126 89 90 5.8 69 4.510-0065-8D 6.5 135 102 135 103 104 5.8 86 7.010-0150-8D 15 135 150 135 151 104 5.8 134 12.5
ETO 10
Measurement diagramETO 10
Connection diagramETO 10-….-5E, ETO 10-….-8D
50
Netz MotorL N U1 U2
230
V18
0 V
160
V14
0 V
120
V10
0 V
80 V 0 V
Netz MotorL1 L2 U1 V1
400
V31
0 V
270
V23
5 V
200
V17
0 V
140
V0
V
L3 W1
0 V
140
V17
0 V
200
V23
5 V
270
V31
0 V
400
V
mains motor mains motor
Switches, Regulators and Controllers
Transformerelectronic, stepless
DesignShock-resistant plastic casing (cream-white) in protection class IP 44, withturn knob on the front side.Clearly arranged terminal strip for mainsand motor connection.For use as an integral version in astandard switch box, the speed-regulator with its front plate is simplyremoved from the casing underside.
FunctionThe transformer contains a turn knobfor the variation of the nominal value bymeans of phase-angle control,semiconductor fuse and a responseoutput.The transformer EPH is not equippedwith any motor protection installation!For a thermal contact connection, werecommend our motor protection unitEUM 11/21.
EPH 03
Technical DataNominal current Nominal voltage Frequency Fuse
EPH A V Hz
03-0010-5E 1 230/240 50/60 F 1.0 A03-0020-5E 2 230/240 50/60 F 2.0 A03-0040-5E 4 230/240 50/60 F 4.0 A
Dimensions in mm, subject to change (without notice)EPHSurface mounting version Integral version only
EPH 03-0010-5EEPH 03-0020-5E
Connection diagramEPH
51
L N
N N
Re M
washer
Switches, Regulators and Controllers
Speed setting transformatic5-step, with casing
DesignCompletely plastic casing in protectionclass IP 54, Type: ETH 31 and 35.Painted metal casing in protection classIP 23 from ETH 36-0040-8D and ETH36-0200-5E.All units are suitable for wall mountingand include; speed control via handswitch with 0-position and 5 switchingsteps, operating signal lamp, 230 V-output for e. g. a solenoid valve. An ILA(motor-activated shutter) can even beconnected.(It is activated when the turn switch isturned from position “0” to “1”).
Permissible ambient temperature:–25 °C to +40 °C.
ETH 31These units include no motor protectionunit. Protection switches for thermalcontact connections are to be laid in theconductor between the control deviceand the motor. In Gebhardt externally-mounted rotor motors, the thermalcontacts are already bound into themotor winding.
ETH 35-/ETH 36These units possess a motor protectioninstallation for thermal contactconnection with a supplementarywarning signal lamp, a potential-freeexchanger and a room thermostatconnection (remote on – off).
FunctionFor motors with built-in thermalcontacts, these open the controlcurrent circuit when the permissiblewinding temperature is exceeded. Thiscauses the main fuse to fall out anddisconnect the motor from the mains.After the motor winding has cooleddown (ca. 2 Min.) or after remedying thecause of the malfunction, respectively,turn the main switch temporarily to the0-position and then back to theoperational position.
Technical dataalternating current modelwithout motor protection installation with motor protection installation
ETH Nominal current mains safety ETH Nominal current mains safety
31-0020-5E 2 A 2 AT 35-0040-5E 4 A 6 AT31-0040-5E 4 A 6 AT 35-0070-5E 7 A 8 AT
36-0200-5E 20 A 20 AT
Primary voltage: 230 V; 50-60 HzSecondary voltage: 60/105/130/160/230 V
Three-phase current modelwith motor protection installation
ETH Nominal current mains safety
35-0010-8D 1 A 1 AT35-0020-8D 2 A 2 AT36-0040-8D 4 A 4 AT36-0070-8D 7 A 8 AT36-0140-8D 14 A 16 AT
Primary voltage: 400 V; 50-60 HzSecondary voltage: 90/140/180/230/400 V
ETH
Technical Data/Dimensions in mm, subject to change (without notice)
ETH a b c d e f g kg
31-0020-5E 155 200 150 144 98 6.2 30 431/35-0040-5E 155 200 150 144 98 6.2 30 435-0070-5E 200 254 170 194 140 6.2 30 836-0200-5E 225 305 165 265 188 6.2 30 1735-0010-8D 155 200 150 144 98 6.2 30 635-0020-8D 200 254 170 194 140 6.2 30 836-0040-8D 225 305 165 265 188 6.2 30 1436-0070-8D 225 305 165 265 188 6.2 30 2036-0140-8D 302 385 223 350 265 6.2 30 35
Measurement diagramETH
52
a
f
c g
e
bd
12 3 4
5
0
53
Switches, Regulators and Controllers
ETH
Connection diagrams Further Switches, Regulators and Controllers on request.
alternating currentETH 31-….-5E
alternating currentETH 35/36-….-5E
Three-phase currentETH 35/36-….-8D
TK = Thermal contact of the motorRT = room thermostat or external switch1 = additional outlet e. g. for solenoid valve, ILA, lamp, etc.2 = free contacts for the status signal “Operating/Malfunction”
N NL1 PE U1 U2 PE L1
N NL1 PE U1 U2 PE L1PENetz Motor À
N NL1 PE U1 U2 PE L1PENetz Motor À
1411 12Á
N NL1 PE U1 U2 PE L1 1411 12TK TK RT RT
N NL1 PE U1 V1 PE L1PENetz Motor À
1411 12Á
W1L2 L3
NPE U1 V1 PE L1 1411 12TK TK RT RTW1N L1 L2 L3
Mains
Mains
Mains
Switches, Regulators and Controllers
Transformerelectronic, stepless
Electronic transformer with steplessadjustable output voltage for fans withcontrollable alternating current motors.
DesignEPA 03-….-5ECompletely plastic casing inprotection class IP 54.
FunctionThe Transformer EPA is equipped with amotor protection installation for thermalcontact connection, nominal valueinput, main switch, operating signallamp, semiconductor fuses andadjustment options for minimal andmaximal speed.
Technical Dataprotection max. Current Nominal Frequency Weightclass consumption voltage approx.
EPA IP A V Hz kg
03-0060-5E 54 0.2- 6 230 50/60 1.303-0100-5E 54 0.2-10 230 50/60 1.9
EPA 03
Dimensions in mm, subject to change (without notice)alternating current designEPA 03
Connection diagramEPA 03
54
Switches, Regulators and Controllers
Transformerelectronic, stepless, digital
Electronic transformer with steplessadjustable output voltage for fans withcontrollable three-phase current motors.
DesignEPA 63-….-8DSurface mounting version plastic casingwith die-cast aluminium base-plate inprotection class IP 54.
EPA 62-….-8DFlush mounting version, plastic casingwith die-cast aluminium base-plate inprotection class IP 10, only suitable forcontrol cabinet installation.
FunctionThe transformers EPA are equippedwith a motor protection installation forthermal contact connection, nominalvalue in-put, main switch, operationsignal lamp, integrated semiconductorfuses, output 0–10 V (= motor voltage),potential-free operation and malfunctionsignal contacts, phase monitoring,adjustment options for minimal andmaximal speed, remote on/off viapotential-free contacts, pushbuttonconnection for reset after a motormalfunction, switch-over manual/automatic, cut-off in case of unit over-heating.
Technical Dataprotection max. current Nominal Frequency Weightclass consumption voltage approx.
EPA IP A V Hz kg
Surface mounting version63-0080-8D 54 0.2- 8 400 50/60 1.363-0160-8D 54 0.2-16 400 50/60 1.963-0220-8D 54 0.2-22 400 50/60 1.9
Flush mounting version62-0080-8D 10 0.2- 8 400 50/60 1.962-0160-8D 10 0.2-16 400 50/60 1.962-0250-8D 10 0.2-25 400 50/60 1.9
EPA 62/63
Connection diagramEPA
55
Switches, Regulators and Controllers
Dimensions in mm, subject to change (without notice)Three-phase current design Surface mounting version/Flush mounting versionEPA 63-0080-8DEPA 62-0080-8D EPA 63-0080-8D EPA 62-0080-8D
EPA 62/63
Three-phase current design flush mounting versionEPA 62-0160-8D
Three-phase current design surface mounting versionEPA 63-0160-8DEPA 63-0220-8D
56
Switches, Regulators and Controllers
Technical DataNominal Max. power weight ambient
EPA Input Protection current consumption approx. temperature
92-0060-5E 0–10 V IP 23 6 A 45 W 1.7 kg 0…+40 °C93-0023-5E 0–10 V IP 54 2.3 A 18 W 1.9 kg 0…+40 °C
EPA a c d e
92-0060-5E 168 68 117 15593-0023-5E 155 55 150 140
EPA 92/93
Wiring diagramEPA 92/93
Dimensions in mm, subject to change (without notice)
57
e
a c
d
Main supply1-ph/230V,50/60 Hz
Relayfailure
Motor stop pressureswitch
potentio-meter
tappings for control signals
Electronic, stepless speed regulator
for voltage controlled single phasemotor with capacitor winding
ExecutionSpeed regulator specially designed forcontrol single phase fan drives.Noise reduced operation by highcontrol frequency (19 kHz). Integratedpower factor correction for sinusshaped feed current. Integrated radionoise filter to match EMC regulations.
Function– Speed control: DC 0…10 V (through
external potentiometer or externalDC), can be switch to internal poten-tiometer (nmin)
– Minimum and maximum speed canbe set (nmin, nmax)
– Pressure/temperature control:Digital input with ramp function toachieve a cheap control withpressure/temperature switches
– Motor protection by currentmonitoring and connection of thermocontacts possible. Short circuitprotected, automatic restartingdevice.
Error messages: High temperature ofcontroller, thermo contact, short circuit,1 relais output with switch over contactand reset button.Parametration possible via serial inter-section for user specific use.
Connection and fittingMain 230 V, 50/60 Hz, fitted in verticalposition.Output voltage: 10…98 % of inputvoltage.Radio noise suppression to EMC-Stan-dard EN 5081-1, EN 50082-1.For cable length up to 10 m (shielded).
RecommendationWe recommended the Gebhardtpressure switch EIP 40, because theoverall control precision depends onprecision of the pressure switch.
Switches, Regulators and Controllers
Speed controllerelectronic, stepless, digital
Electronic controller for pressure, air-speed, temperature, with steplessadjustable output voltage for fans withcontrollable alternating current or three-phase current motors respectively.
DesignEPA 83… Surface mounting versionPlastic casing with die-cast aluminiumbase-plate in protection class IP 54.
EPA 82… Flush mounting versionCasing with die-cast aluminium base-plate in protection class IP 00 (8A), IP 10(16+25A).
FunctionThe pressure controller EPA is equippedwith a motor protection installation forthermal contact connection, nominalvalue input, main switch/automatic withbypass-function, actual value input forsensors with 0–10 V signal, for tempe-rature sensor, for sensors with 4–20 mAsignal; operating signal lamp, semi-conductor fuses and adjustment optionsfor minimal and maximal speed,connection for pressure sensor EIP 2*,menu-directed set-up via three functionkeys, output (0–10 V), potential-freeoperation signal contact, externalnominal value preset via potentiometer,integrated semiconductor fuses, phasemonitoring, controller block, reset push-button connection.
EPA 82/83
Dimensions in mm, subject to change (without notice)alternating current design – only surface mounting versionEPA 83-0060-5EEPA 83-0100-5E
58
Technical Dataprotection max. Current Nominal Frequency Weightclass consumption voltage approx.
EPA IP A V Hz kg
alternating current design83-0060-5E 54 0.2- 6 230 50/60 1.383-0100-5E 54 0.2-10 230 50/60 1.5
Three-phase current design83-0080-8D 54 0.2- 8 400 50/60 4.283-0160-8D 54 0.2-16 400 50/60 6.583-0220-8D 54 0.2-22 400 50/60 10.382-0080-8D 00 0.2- 8 400 50/60 4.082-0160-8D 10 0.2-16 400 50/60 6.382-0250-8D 10 0.2-25 400 50/60 10.1
Three-phase current design surface mounting version / flush mounting versionEPA 83-0080-8D EPA 83-0080-8 EPA 82-0080-8DEPA 82-0080-8D
59
Switches, Regulators and Controllers
EPA 82/83
Dimensions in mm, subject to change (without notice)
Three-phase current designSurface mounting version Flush mounting versionEPA 83-0160-8D EPA 82-0160-8DEPA 83-0220-8D EPA 82-0250-8D
Connection diagramThree-phase current designEPA 82/83-….-8D
Connection diagramalternating current designEPA 83-….-5E
Your System-PartnerGebhardtVentilatorenGmbH & Co.
Gebhardtstrasse 19-25D-74638 Waldenburg
Telephone +49 (0)7942 101 0Fax +49 (0)7942 101 170E-Mail info@gebhardt.de
www.gebhardt.de
Fans You Need
genovent® is a registered trademark of GebhardtVentilatoren
top related