gebhardtventilatoren - aeolosfans.com · product review 2 “genovent” centrifugal roof unit rda...

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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

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“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

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Technical Description

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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

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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

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“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.

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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).

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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

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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

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Noise

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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



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Noise

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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

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Sample Specifications

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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.


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

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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


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.


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


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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

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Technical Data

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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


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


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


* 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

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Full

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rent

Cap

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Sta

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V· max

L WA

at V·

max

L WA

bei

V·op

t

max

. tem

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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


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

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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

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elec

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Gebhardt genovent

RD

A

Speed selector

Technical Data

16

genoventType rpm kW A IA/IN m3/h dB dB

Sp

eed

max

. ab

sorb

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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



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

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rox.

wei

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mot

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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

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∆p

faef

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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


= V· opt

XXXXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V


= V· opt

XXXXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V


= V· opt

XXXXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V


= V· opt

XXXXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V


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”.


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


= V· opt

XXXXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V


= 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)


a e


Gebhardt genovent

20



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


= V· opt

XXXXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V


= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-2531-5D1)


a e

= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-2531-7D1)


a e


Gebhardt genovent

21



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


= V· opt

XXXXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 Vg = 80 V


= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-3535-5D1)


a e

= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-3535-7D1)


a e


Gebhardt genovent

22



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


= V· opt

XXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 V


XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-3540-5D1)


a e

= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-3540-7D1)


a e

= V· opt


Gebhardt genovent

23



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


= V· opt

XXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 V


= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-3545-5D1)


a e

= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-3545-7D1)


a e

= V· opt


Gebhardt genovent

24



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


= V· opt

XXXXXX

a = 230 Vb = 180 Vc = 160 Vd = 140 Ve = 120 Vf = 100 V


XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-4550-5D1)


a e

= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-4550-7D1)


a e

= V· opt


Gebhardt genovent

25



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


= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-4556-5D1)


a e

= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V

XXRDA 31-4556-7D1)


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


Gebhardt genovent

26



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)


a e

= V· opt= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V


= V· opt

XXXXXXX

a = 400 Vb = 310 Vc = 270 Vd = 235 Ve = 200 Vf = 170 Vg = 140 V


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 31-5671-6D1RDA 31-5671-HD12

= V· opt


Gebhardt genovent

27


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 31-7190-6D

= V· opt

RDA 31-5675-8D 1

= V· opt


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.


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


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.


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


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


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


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


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


Centrifugal Roof Unitswith External Motor

RDMGebhardt genovent

31



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


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


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



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


Gebhardt genovent

35


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


Gebhardt genovent

36


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


Gebhardt genovent

37


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


Gebhardt genovent

38


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


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


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.


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


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


(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


(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













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


3535 ZKE 11–0355 ZKF 11–0355 ZSG 04–0355 ZDR 30–0355 ZKD 01–0355 ILA 01–3535 –







5675 ZKE 11–0710 ZKF 11–0710 ZSG 04–0710 – ZKD 01–0710 ILA 01–5675 –



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


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


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


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


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


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


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


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


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


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


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


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


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


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


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.


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


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

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