Rittal 3238.500 User manual

Assembly and operating instructions
EC fan-and-filter unit
3238.500
3239.500
3240.500
3241.500
3243.500
3244.500
3245.500
3245.510
3245.600

2 Rittal EC fan-and-filter unit assembly and operating instructions
Preface
EN Preface
Dear Customer!
Thank you for choosing a EC fan-and-filter unit from
Rittal.
Yours
Rittal GmbH & Co. KG
Rittal GmbH & Co. KG
Auf dem Stützelberg
35745 Herborn
Germany
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
www.rittal.com
www.rittal.de
We are always happy to answer any technical ques-
tions regarding our entire range of products.

Rittal EC fan-and-filter unit assembly and operating instructions 3
Contents
EN
Contents
1 Notes on documentation......................4
1.1 Other applicable documents............................. 4
1.2 Retention of documents ................................... 4
1.3 Symbols used .................................................. 4
2 Safety instructions................................4
3 Product description..............................4
3.1 Functional description....................................... 4
3.1.1 Main components ............................................ 4
3.1.2 Control ............................................................. 5
3.1.3 Safety equipment ............................................. 5
3.1.4 Filter mats ........................................................ 5
3.2 Intended use .................................................... 5
3.3 Scope of supply ............................................... 5
4 Assembly and connections ..................5
4.1 Choosing the installation site ............................ 5
4.2 Assembly instructions....................................... 5
4.2.1 General ............................................................ 5
4.2.2 Layout of the components in the enclosure ...... 6
4.3 Fitting the EC fan-and-filter unit or outlet filter ... 6
4.3.1 Cutting out the enclosure ................................. 6
4.3.2 Fitting the EC fan-and-filter unit ........................ 6
4.4 Notes on electrical connection.......................... 6
4.4.1 Connection data............................................... 7
4.4.2 Overvoltage protection and supply line load...... 7
4.4.3 PE conductor connection................................. 7
4.4.4 Electromagnetic compatibility (EMC)................. 7
5 Carrying out the electrical connection...7
5.1 Connecting the power supply........................... 7
5.2 Rotating the voltage connection ....................... 7
5.3 Installing the control line ................................... 8
5.4 Changing the direction of airflow....................... 8
6 Commissioning ....................................8
7 Installing and changing the filter............8
7.1 Replacing the chopped-fibre filter ..................... 8
7.2 Replacing the pleated filter ............................... 9
8 Inspection and maintenance ................9
9 Storage and disposal .........................10
10 Technical specifications......................11
11 Cut-out/drilling dimensions.................13
12 EMC fan/outlet filter............................13
13 Accessories .......................................14
14 Connection diagrams.........................16
15 Declaration of conformity....................18

4 Rittal EC fan-and-filter unit assembly and operating instructions
Notes on documentation
EN 1 Notes on documentation
These assembly and operating instructions are aimed
at
– tradespersons who are familiar with assembly and
installation of the EC fan-and-filter unit.
– trained specialists who are familiar with operation of
the EC fan-and-filter unit.
1.1 Other applicable documents
The assembly and operating instructions available as
paper documents for the unit types described here are
included with the equipment.
We cannot accept any liability for damage associated
with failure to observe these instructions. Where appli-
cable, the instructions for any accessories used also
apply.
1.2 Retention of documents
These instructions and all associated documents
constitute an integral part of the product. They must be
given to the plant operator. The operator is responsible
for storage of the documents so they are readily availa-
ble when needed.
1.3 Symbols used
Danger!
Immediate danger to life and limb!
Caution!
Potential threat to the product and its
environment.
Note:
Useful information and special features.
◾ The bullet point indicates an action to be performed.
2 Safety instructions
Please observe the following safety instructions when
assembling and operating the unit:
– Assembly, installation and servicing may only be
performed by properly trained specialists.
– Do not obstruct the air inlet and outlet of the EC fan-
and-filter unit inside and outside the enclosure (see
also section4.2.2 "Layout of the components in the
enclosure", page6).
– The louvres must always have their opening pointing
downwards.
– Use only original spare parts and accessories.
– Do not make any changes to the EC fan-and-filter
unit other than those described in these and other
applicable instructions.
– The EC fan-and-filter unit must only be connected
to the mains with the system de-energised. Connect
the pre-fuse specified on the rating plate.
– Changes to the direction of airflow must only be car-
ried out with the system de-energised.
– Changes to the positioning of the mains connection
must only be carried out with the system de-ener-
gised.
– Never insert your fingers into the rotating fan blade.
– Electrical connection and any repairs may only be
carried out by authorised specialist personnel.
3 Product description
Depending on the model chosen, your EC fan-and-
filter unit may vary in appearance from the illustrations
contained in these instructions. However, the functions
are identical in principle.
1
2
3
4
5
Fig.1: Product description
Key
1 Function logo (to release the louvred grille)
2 Louvred grille
3 Filter box with filter mat
4 Fan housing
5 Variable electrical connection
3.1 Functional description
The EC fan-and-filter unit in conjunction with the cor-
responding outlet filter(s) is used to dissipate heat loss
from enclosures, ventilate the enclosure and protect
temperature-sensitive components. This is achieved
via the direct infeed of ambient air, the temperature
of which must be less than the admissible enclosure
interior temperature. The system is fitted into prepared
cut-outs.
3.1.1 Main components
The EC fan-and-filter unit is comprised of the following
four main components: Fan motor, filter box, louvred
grille with function logo and filter medium.

Rittal EC fan-and-filter unit assembly and operating instructions 5
Assembly and connections
EN
3.1.2 Control
Rittal fan-and-filter units may be controlled more e-
ciently using an enclosure internal thermostat (Model
No. 3110.000), digital temperature display (Model No.
3114.200), temperature-dependent speed control
(Model No. 3235.440, 3235.450) and/or hygrostat
(Model No. 3118.000).
The Rittal EC fan-and-filter units 3240.500 to 3245.510
as well as 3245.600 possess an integrated control
interface (0 – 10V or PWM input and tacho signal out-
put). These units can be connected either via the Rittal
control unit (Model No. 3235.440), the Rittal sensor for
speed control (Model No. 3235.450) or else directly via
a control system (e.g. PLC) provided by the customer,
enabling the speed of the fan to be both controlled and
monitored.
The corresponding connection diagram is to be found
on page16 (fig.13).
3.1.3 Safety equipment
The fan is equipped with thermal winding protection
devices for protection against excess current.
3.1.4 Filter mats
The EC fan-and-filter unit/outlet filter is supplied with
an installed standard chopped-fibre filter mat. The filter
must be checked regularly in accordance with the
level of dust exposure and replaced as necessary. To
increase the protection category and for presence of
dust with a grain size of <10μm, we recommend the
use of IP55 pleated filters.
Note:
The air throughput volume will be reduced.
Special filter mats are required for EMC
fan-and-filter units (see section13 "Acces-
sories").
3.2 Intended use
Rittal EC fan-and-filter units were developed and de-
signed in accordance with the state of the art and the
recognised rules governing technical safety. Never-
theless, if used improperly, they may pose a threat to
life and limb or cause damage to property. The unit is
only intended for ventilating enclosures and electronic
cases. Any other use is deemed improper. The manu-
facturer will not be liable for any damages caused as a
result of improper use, or for incorrect assembly, instal-
lation and use. All risk is borne solely by the user.
Proper usage also includes the observation of all valid
documents and compliance with the inspection and
servicing conditions.
3.3 Scope of supply
The fan is supplied in a packaging unit in a fully assem-
bled state and ready to connect.
◾ Please check the scope of supply for completeness.
Quantity Description
1 EC fan-and-filter unit
4 Mounting screws (not for 3238.5xx
to 3239.5xx)
1 Assembly and operating instructions
1 Drilling template, self-adhesive
1 Standard chopped-fibre filter mat or
EMC filter mat
Tab. 1: Scope of supply
4 Assembly and connections
4.1 Choosing the installation site
When choosing the installation site for the enclosure,
please observe the following:
– The site for the enclosure, and hence the arrange-
ment of the EC fan-and-filter unit, must be carefully
selected so as to ensure good ventilation.
– The site must be free from excessive dirt and mois-
ture.
– EC fan-and-filter units must always be installed on
vertical panels (door or walls).
– The ambient temperature must be lower than the
permissible enclosure interior temperature.
– The mains connection data as stated on the rating
plate of the unit must be guaranteed.
4.2 Assembly instructions
4.2.1 General
– Check the packaging carefully for signs of damage.
Any packaging damage may be the cause of a sub-
sequent functional failure.
– The EC fan-and-filter unit and outlet filter must always
be mounted on an enclosure in order to ensure air
exchange.
Note:
The outlet filter should be at least the same
size as the EC fan-and-filter unit.
– The enclosure must be sealed on all sides (IP54). If
the enclosure has a leak, unfiltered, contaminated air
may enter the enclosure, depending on the direction
of airflow of the fan.
– To allow the louvred grille to be opened without
problem when the EC fan-and-filter units are bayed
vertically, a minimum separation should be observed.
– This is either 15mm measured between drilling tem-
plates or between the associated mounting cut-outs
in accordance with the following table:

6 Rittal EC fan-and-filter unit assembly and operating instructions
Assembly and connections
EN Model No. Separation between two
mounting cut-outs
3238.xxx 39 mm
3239.xxx 42 mm
3240.xxx 46 mm
3241.xxx 46 mm
3243.xxx 46 mm
3244.xxx 46 mm
3245.xxx 46 mm
Tab. 2: Separation between two mounting cut-outs
4.2.2 Layout of the components in the enclosure
Observe the air flows from the internal fans of installed
electronic components. For installation, it is important
to ensure that the airflows of fans and built-in electronic
components do not have a negative influence on one
another (air short-circuit). The corresponding minimum
distances between the fan and component must be
observed in order to ensure unhindered air circulation.
4.3 Fitting the EC fan-and-filter unit or out-
let filter
The EC fan-and-filter unit or outlet filter is mounted on a
vertical panel of the enclosure:
◾ For this purpose, the appropriate door, side or rear
panel must be cut out using the supplied drilling
template.
The EC fan-and-filter unit is generally fitted in the lower
part of the enclosure, and the outlet filter in the upper
part.
4.3.1 Cutting out the enclosure
◾ Stick the self-adhesive drilling template supplied to
the envisaged position on the door, side or rear panel
of the enclosure.
Lines indicating the dimensions of cut-outs and drilling
specifications for mounting and fixing of the fan (only
necessary for sheet metal thickness 2.5mm and
above) are to be found on the drilling template. See
also fig.10 and fig.11, page13.
Risk of injury!
Carefully deburr all cut-outs to prevent
injuries caused by sharp edges.
◾ Make the cut-outs including the line width as per the
drilling template
◾ Deburr the cut-outs.
4.3.2 Fitting the EC fan-and-filter unit
– The fan may be fitted without tools, by simply snap-
ping into the preconfigured mounting cut-out.
– Make sure that the clips have snapped into place
properly to guarantee secure mounting.
– From a sheet metal thickness of 2mm, the clips
should be pressed in individually.
– From a sheet metal thickness of 2.5mm, the EC
fan-and-filter unit must be screwfastened in addition
(tightening torque, see section11 "Cut-out/drilling
dimensions").
– To drill the lower holes, it is necessary to remove the
louvred grille as shown in fig.2.
3238.5xx
3239.5xx
3240.5xx
3241.5xx
3243.5xx
3244.5xx
3245.5xx
3245.6xx
Fig.2: Release the louvred grille
– If transporting, it is necessary that you screw-fasten
the fan to prevent it from falling out of the mounting
cut-out.
– The fan-and-filter unit is a rotating component that
may transfer vibrations and oscillations.
Appropriate measures to decouple vibration must be
taken in advance by the company responsible for the
overall plant or system.
– The protection category can be increased by means
of the following accessories:
– IP55 by using a pleated filter or a hose-proof hood.
– IP56 by using a hose-proof hood.
Note:
To increase the protection category, a pleat-
ed filter or hose-proof hood must be used
for the EC fan-and-filter unit and outlet filter.
4.4 Notes on electrical connection
When performing the electrical connection, it is impor-
tant to observe all valid national and regional regula-

Rittal EC fan-and-filter unit assembly and operating instructions 7
Carrying out the electrical connection
EN
tions as well as the provisions of the responsible power
supply company. Electrical connection must only be
carried out by a qualified electrician who is responsible
for compliance with the existing standards and regula-
tions.
4.4.1 Connection data
– The voltage and frequency of the connection must
correspond to the values stated on the rating plate.
– Electrical connection and any repairs may only be
carried out by authorised specialist personnel.
Use only original spare parts!
– Install the pre-fuse cited on the rating plate (cir-
cuit-breaker or slow fuse) to protect the cable and
fan from short circuits. If several fans are operated on
a single fuse, observe the total connected load.
– The direction of airflow and the direction of rota-
tion are each marked on the motor housing with an
arrow.
4.4.2 Overvoltage protection and supply line
load
The unit does not have its own overvoltage protection.
Measures must be taken by the operator at the supply
end to ensure eective lightning and overvoltage pro-
tection. The mains voltage must not exceed a tolerance
of ±10%.
4.4.3 PE conductor connection
The PE conductor connection must be connected to
the PE conductor system of the overall system.
4.4.4 Electromagnetic compatibility (EMC)
In order to comply with EMC Directive 61000-6-3
(Emission standard for residential, commercial and
light-industrial environments) it may be necessary,
depending on the application, to take the following
interference suppression measures:
◾ Fan type 3245.500 – install an upstream 2mH, 2.5A
interference suppression choke.
5 Carrying out the electrical con-
nection
5.1 Connecting the power supply
◾ Complete the electrical connection by following the
wiring plans.
Note:
For technical data, refer to the rating plate.
◾ Remove the red cover from the electrical connection.
Fig.3: Access the electrical connection
◾ Insert the connection cable of the mains supply with
wire end ferrules into the screwless spring terminals.
Choose an appropriate pre-fuse according to the line
cross-section (2 x 0.75 – 2.5 mm² multi-wire, 2 x 1.5
– 2.5mm² fine-wire soldered).
Caution!
If no wire end ferrules are used, the
insulation of the individual wires should
be stripped to a max. of 9mm (to
comply with clearance and creepage
distances).
◾ Re-attach the electrical connection
5.2 Rotating the voltage connection
If the position of the voltage connection is not ideally
accessible, it may be rotated through 90° and snapped
into position. To this end, press down on the release
button of the bayonet connection at the rear of the fan.
Units 3238.5xx to 3239.xxx are released by pulling out
the clip (see fig.4) of the bayonet connection.
1.
2. 3238.5xx
3239.5xx
Fig.4: Release the bayonet connection
Units 3240.xxx, 3241.xxx, 3243.xxx to 3245.xxx are
released by pressing the release button of the bayonet
connection (see fig.5), located on the opposite corner
from the connection terminal.

8 Rittal EC fan-and-filter unit assembly and operating instructions
Commissioning
EN
1.
2.
Fig.5: Release the bayonet connection
5.3 Installing the control line
To permit control of the EC fan-and-filter units via an
external control unit (e.g. 3235.440 or 3235.450), the
units 3240.5xx to 3245.5xx possess a separate termi-
nal for connection of a control line.
◾ To this end, release and remove the jumper between
the "+10V" and "0 – 10V/PWM" connections.
For this purpose, use a screwdriver with a 3.5 x
0.5mm blade.
◾ Use the screwdriver to open the terminal and insert
the connection cable of the control line in accord-
ance with the connection diagram on page16 (line
cross-section 0.8 – 1.5mm², fine wire).
◾ Remove the screwdriver.
Note:
For operation without control line, the jump-
er must be left in the connection clamp. The
unit is then operated at maximum speed
(see fig.15).
5.4 Changing the direction of airflow
The direction of airflow blows into the enclosure from
the outside as standard.
Should it become necessary to change the direc-
tion of airflow for technical reasons (space, specific
component air routing etc.), this is easily achieved.
Simply release the fan housing and rotate it through
180°. To release, please follow the same procedure
as described under section5.2 "Rotating the voltage
connection", page7.
Please also observe the instructions outlined under
section4.2.1 "General", page5.
6 Commissioning
◾ Once all the assembly and installation work is com-
plete, switch on the power supply to the EC fan-and-
filter unit.
The EC fan-and-filter unit operates automatically, in
other words, the fan will start up once the power has
been switched on.
Note:
EC fan-and-filter units start running with a
delay of approx. 15sec.
7 Installing and changing the filter
The fan-and-filter unit and outlet filter are supplied as
standard with a standard chopped-fibre filter mat for
the pre-filtering of dry coarse dust and lint in the ambi-
ent air.
To increase the protection category and for presence of
dust with a grain size <10μm, we recommend the use
of pleated filters (see section13 "Accessories").
The filter should be checked at regular intervals in
accordance with the level of dust exposure (recom-
mended: at the latest after 2,000 operating hours) and
replaced as necessary.
Note:
Use only original Rittal filters which bear the
Rittal logo in order to safeguard the desig-
nated protection category, air throughout
and operating approvals.
The chopped-fibre filter mat supplied for
the fan-and-filter unit must be removed and
disposed of when a pleated filter is used.
Risk of injury!
Only change the filter mat while the fan
rotor is stationary.
Never insert your fingers into the fan
rotor.
To insert or replace the filter, proceed as follows (direc-
tion of airflow: drawing from outside and blowing into
the enclosure).
7.1 Replacing the chopped-fibre filter
◾ First press the catch of the louvred grille (Rittal logo)
up slightly with one finger (see fig.6).
◾ Once it is released, the louvred grille can be dropped
open by approx. 70° or 90°.
◾ Remove the dirty chopped-fibre filter mat and place
the new chopped-fibre filter mat in the filter housing.
◾ When installing, ensure that the roughened side with
the Rittal logo points inside.
◾ Now push the louvred grille back onto the enclosure
until it snaps audibly into position.

Rittal EC fan-and-filter unit assembly and operating instructions 9
Inspection and maintenance
EN
Fig.6: Release the louvred grille
Note:
If it becomes necessary to change the direc-
tion of the airflow (see section5.4 "Chang-
ing the direction of airflow", page8), the
installation is reversed accordingly.
7.2 Replacing the pleated filter
◾ First press the catch of the louvred grill (Rittal logo)
up slightly with one finger (see fig.6).
◾ Once it is released, the louvred grille can be dropped
open by approx. 70° or 90°.
◾ Remove the standard chopped-fibre filter contained
in the scope of supply; it is not required.
◾ Place the pleated filter in the louvred grille. The "Top"
logo indicates the insertion direction (see fig.7)
Fig.7: Installing the IP54 pleated filter
◾ To seal properly, ensure that the side tabs of the
pleated filter are placed over the ribs of the louvred
grille.
Fig.8: Positioning of the side tabs
◾ For IP55 only: place the IP55 absorbent fleece sup-
plied with the pleated filters on the previously placed
pleated filter (see fig.9). The installation direction of
the absorber is not critical.
Fig.9: Installing the IP55 pleated filter
◾ Now push the louvred grille back onto the enclosure
until it snaps audibly into position.
8 Inspection and maintenance
Risk of electric shock!
The unit is live.
Switch o the power supply before
opening, and take suitable precautions
against it being accidentally switched
back on.
The built-in, maintenance-free fan is mounted on a ball
bearing, and is protected against humidity and dust,
and equipped with a temperature monitor.
The life expectancy is at least 60,000 operating hours
(L10, 40°C). The EC fan-and-filter unit is thus largely
maintenance free.

10 Rittal EC fan-and-filter unit assembly and operating instructions
Storage and disposal
EN
From time to time, the components may need to be
cleaned using a vacuum cleaner or compressed air if
they become visibly dirty.
Any stubborn, oily stains may be removed using a
non-flammable detergent, such as degreaser.
Caution!
Risk of fire!
Never use flammable liquids for clean-
ing.
Sequence of maintenance measures:
– Check the level of dirt.
– Filter soiling?
Replace the filter.
– Fan membranes soiled?
Clean.
– Check the noise generation of the fan.
– Compressed air cleaning
9 Storage and disposal
Caution!
Risk of damage!
The EC fan-and-filter unit must not be
stored at temperatures above +70°C or
below -25°C.
Disposal can be performed at the Rittal plant.
Please contact us for advice.

Rittal EC fan-and-filter unit assembly and operating instructions 11
Technical specifications
EN
10 Technical specifications
– Observe the mains connection data (voltage and
frequency) as per the rating plate.
– Observe the pre-fuse as per the specifications on the
rating plate.
Unit Model No.
Fan-and-filter unit
RAL7035 3238.500 3239.500 3240.500 3241.500 3243.500
Rated operating voltage V
Hz
200 - 240, 1~,
50/60
200 - 240, 1~,
50/60
200 - 240, 1~,
50/60
200 - 240, 1~,
50/60
200 - 240, 1~,
50/60
Rated current max. A 0.05 0.05 0.12 0.17 0.5
Power consumption
(active power) W 6 6 11 16 51
Pre-fuse T A 6 6 6 6 6
Dimensions
Width (B1) x height (H1) mm 148.5 x 148.5 204 x 204 255 x 255 255 x 255 323 x 323
Required mounting cut-
out (B2 x H2) mm 124 x 124 177 x 177 224 x 224 224 x 224 292 x 292
Depth (T1) mm 16 24 25 25 25
Max. installation depth
(T2) mm 58.5 90 107 107 118.5
Air throughput, unimped-
ed airflow with standard
chopped-fibre filter mat
m³/h 52 100 175 225 540
Air throughput, unimped-
ed airflow with pleated
filter
m³/h 63 110 218 272 625
Air throughput with outlet
filter, including standard
chopped-fibre filter mat
m³/h
1 x 3238.200:
36
1 x 3239.200:
74
1 x 3240.200:
130
1 x 3240.200:
171
1 x 3243.200:
405
2 x 3238.200:
46
2 x 3239.200:
84
2 x 3240.200:
159
2 x 3240.200:
200
2 x 3243.200:
475
Air throughput with outlet
filter including pleated filter m³/h
1 x 3238.200:
43
1 x 3239.200:
89
1 x 3240.200:
188
1 x 3240.200:
237
1 x 3243.200:
550
2 x 3238.200:
54
2 x 3239.200:
98
2 x 3240.200:
207
2 x 3240.200:
261
2 x 3243.200:
600
Control interface
(0 – 10V/PWM input and
tacho signal output)
– – ◾ ◾ ◾
Fan Diagonal/EC motor
Noise pressure level dB (A) 49 53 47 52 63
Operating temperature °C -20…+55 -20…+55 -25…+55 -25…+55 -25…+55
Storage temperature °C -30…+70 -30…+70 -25…+70 -25…+70 -25…+70
Protection category (to
IEC 60 529)
IP54 standard
IP54 with
pleated filter
IP56 with
hose-proof
hood
IP54 standard
IP55 with pleated filter
IP56 with hose-proof hood
Tab. 3: Technical specifications Technical modifications reserved.

12 Rittal EC fan-and-filter unit assembly and operating instructions
Technical specifications
EN Unit Model No.
Fan-and-filter unit
RAL7035 3244.500 3245.500 3245.510 3245.600*
Rated operating voltage V
Hz
200 - 240, 1~,
50/60
200 - 240, 1~,
50/60
100 - 130, 1~,
50/60
200 - 240, 1~,
50/60
Rated current max. A 0.7 1.33 2.1 1.33
Rated operating voltage
(active power) W 80 165 165 165
Pre-fuse T A 6 4 6 4
Dimensions
Width (B1) x height (H1) mm 323 x 323 323 x 323 323 x 323 323 x 323
Required mounting cut-
out (B2 x H2) mm 292 x 292 292 x 292 292 x 292 292 x 292
Depth (T1) mm 25 25 25 25
Max. installation depth
(T2) mm 130.5 130.5 130.5 130.5
Air throughput, unimped-
ed airflow with standard
chopped-fibre filter mat
m³/h 700 890 890 890
Air throughput, unimped-
ed airflow with pleated
filter
m³/h 855 1125 1125 1125
Air throughput with outlet
filter, including standard
chopped-fibre filter mat
m³/h
1 x 3243.200: 485 1 x 3243.200: 630 1 x 3243.200: 630 1 x 3243.200: 630
2 x 3243.200: 570 2 x 3243.200: 770 2 x 3243.200: 770 2 x 3243.200: 770
Air throughput with outlet
filter including pleated filter m³/h
1 x 3243.200: 700 1 x 3243.200: 930 1 x 3243.200: 930 1 x 3243.200: 930
2 x 3243.200: 800 2 x 3243.200:
1060
2 x 3243.200:
1060
2 x 3243.200:
1060
Control interface
(0 – 10V/PWM input and
tacho signal output)
◾◾◾◾
Fan Diagonal/EC motor
Noise pressure level dB (A) 64 72 72 72
Operating temperature °C -25…+55 -25…+55 -25…+55 -25…+55
Storage temperature °C -25…+70 -25…+70 -25…+70 -25…+70
Protection category (to
IEC 60 529)
IP54 standard
IP55 with pleated
filter
IP56 with hose-
proof hood
IP51 standard
IP52 with pleated filter
IP56 with hose-proof hood
Tab. 4: Technical specifications Technical modifications reserved.
* EMC version

Rittal EC fan-and-filter unit assembly and operating instructions 13
Cut-out/drilling dimensions
EN
11 Cut-out/drilling dimensions
H2
B2
H1
B1
T2
T1
Fig.10: Cut-out dimensions
B = width, T = depth
Fig.11: Drilling pattern
Note:
The cut-out must be increased by 1mm
each side for wall thickness above 2.5mm
(see accompanying drilling template).
Model No. B2 x H2 mm T2 mm
3238.xxx 124 x 124 58.5
3239.xxx 177 x 177 90
3240.xxx 224 x 224 107
3241.xxx 224 x 224 107
3243.xxx 292 x 292 118.5
3244.xxx 292 x 292 130.5
3245.xxx 292 x 292 130.5
Tab. 5: Cut-out dimensions
Model No. Ø mm F mm Nm
3238.xxx 3.5 132.5 1
3239.xxx 4.5 185 1
3240.xxx 4.5 234 2
3241.xxx 4.5 234 2
3243.xxx 4.5 302 3
3244.xxx 4.5 302 3
3245.xxx 4.5 302 3
Tab. 6: Drilling dimensions and tightening torques
12 EMC fan/outlet filter
To achieve EMC protection, the EMC fans and EMC
outlet filters should be snapped into the mounting
cut-out and screw-fastened using the screws supplied.
Next, the four contact foils should be stuck on all-
round between the EC fan-and-filter unit and the inside
of the enclosure as shown in the following illustration.

14 Rittal EC fan-and-filter unit assembly and operating instructions
Accessories
EN
Fig.12: EMC contact foils
Note:
EMC protection can only be guaranteed
when using original Rittal EMC filter media
(Model No. 3243.066).
13 Accessories
EMC filter mat
To fit Model No. Filter class in accordance
with DIN EN 779
In accordance with
ISO16890 Packs of Model No.
3245.6xx G3 ISO coarse 50% 5 pc(s). 3243.066
Tab. 7: EMC filter mat
Chopped-fibre filter mat for fan-and-filter unit
To fit Model No. Filter class in accordance
with DIN EN 779
In accordance with
ISO16890 Packs of Model No.
3238.xxx G2 ISO coarse 50% 5 pc(s). 3322.700
3239.xxx G3 ISO coarse 50% 5 pc(s). 3171.100
3240.xxx/3241.xxx G3 ISO coarse 50% 5 pc(s). 3172.100
3243.xxx/3244.xxx/3245.xxx G3 ISO coarse 50% 5 pc(s). 3173.100
Tab. 8: Chopped-fibre filter mat for fan-and-filter unit
IP54 pleated filter for fan-and-filter unit
To fit Model No. Filter class in accordance
with DIN EN 779
In accordance with
ISO16890 Packs of Model No.
3238.xxx G4 ISO coarse 70% 5 pc(s). 3322.720
3239.xxx G4 ISO coarse 70% 5 pc(s). 3171.120
3240.xxx/3241.xxx G4 ISO coarse 70% 5 pc(s). 3172.120
3243.xxx/3244.xxx/3245.xxx G4 ISO coarse 70% 5 pc(s). 3173.120
Tab. 9: IP54 pleated filter for fan-and-filter unit

Rittal EC fan-and-filter unit assembly and operating instructions 15
Accessories
EN
IP55 pleated filter for fan-and-filter unit
To fit Model No. Filter class in accordance
with DIN EN 779
In accordance with
ISO16890 Packs of Model No.
3239.xxx G4 ISO ePM10 55% 5 pc(s). 3181.125
3240.xxx/3241.xxx G4 ISO ePM10 55% 5 pc(s). 3182.125
3243.xxx/3244.xxx/3245.xxx G4 ISO ePM10 55% 5 pc(s). 3183.125
Tab. 10: IP55 pleated filter for fan-and-filter unit
Blanking cover for fan-and-filter unit / outlet filter
To fit Model No. IP protection category in accordance with IEC 60529 Packs of Model No.
3238.xxx IP54 2 pc(s). 3238.020
3239.xxx IP54 2 pc(s). 3239.020
3240.xxx/3241.xxx IP54 2 pc(s). 3240.020
3243.xxx/3244.xxx/3245.xxx IP54 2 pc(s). 3243.020
Tab. 11: Blanking cover for fan-and-filter unit / outlet filter
Hose-proof hoods
To fit Model No. W x H x D mm Protection category Packs of Model No.
3238.xxx 176 x 245 x 55 NEMA1, NEMA12, NEMA3, NEMA3R,
NEMA4, NEMA4X 1 pc(s). 3238.080
3239.xxx 233 x 330 x 55 NEMA1, NEMA12, NEMA3, NEMA3R,
NEMA4, NEMA4X 1 pc(s). 3239.080
3240.xxx/3241.xxx 282 x 390 x 85 NEMA1, NEMA12, NEMA3, NEMA3R,
NEMA4, NEMA4X 1 pc(s). 3240.080
3243.xxx/3244.xxx 350 x 480 x 110 NEMA1, NEMA12, NEMA3, NEMA3R,
NEMA4, NEMA4X 1 pc(s). 3243.080
3245.xxx 350 x 480 x 160 NEMA1, NEMA12, NEMA3, NEMA3R 1 pc(s). 3245.080
Tab. 12: Hose-proof hoods

16 Rittal EC fan-and-filter unit assembly and operating instructions
Connection diagrams
EN 14 Connection diagrams
M
EC
1˜
LNPE
0 – 10 V
PWM
+10 V
GND
Speed
M
1~
LNPE
3238.5xx/3239.5xx 3240.5xx/3241.5xx/3243.5xx/
3244.5xx/3245.5xx/.6xx
Fig.13: Connection diagrams
CON10
CON11
CON12
L
N
PE
+10 V
10 V/PWM
GND
Speed
PE 1
I max. = 1.1 mA
I max. = 10 mA
47 k
680 R
ZMM 47
47 k 1 uF
1.6 AT
AC 1
AC 2
P
3
1
2
3
4
3
2
1
3
2
3
2
2
1
10 K
1
2
12 V
15 V
100 % PWM n = max.
10 % PWM n = min.
<10 % PWM n = 0
1
41
42
N
1 – 10 V
10 V n = max.
1 V n = min.
<1 V n = 0
1 2
3 4
3240.5xx/3241.5xx/3243.5xx/3244.5xx/3245.5xx/3245.6xx
Interface/connector Fan/motor
Fig.14: Connection diagram 3240.5xx/3241.5xx/3243.5xx/3244.5xx/3245.5xx/3245.6xx
1Max. speed (as delivered)
2Adjustable speed
3Adjustable speed via PWM 1 – 10 kHz
4Adjustable speed via potentiometer

Rittal EC fan-and-filter unit assembly and operating instructions 17
Connection diagrams
EN
Connection Function/Assignment
L Power supply
N Neutral conductor
PE PE conductor
GND GND connection of the control interface
0…10V/PWM Control input 0…10 V or PWM, galvanically isolated, impedance 100 kΩ
+10 V Voltage output 10 V max. 1.1 mA, galvanically isolated, not short circuit-protected
Speed Speed output Open Collector, 1 pulse per revolution, galvanically isolated
Tab. 13: Explanations to fig.14
Fig.15: Connection clamps

18 Rittal EC fan-and-filter unit assembly and operating instructions
Declaration of conformity
EN 15 Declaration of conformity

Rittal EC fan-and-filter unit assembly and operating instructions 19
Notes

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Phone [phone]
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11.2022/D-0000-00003198-00-EN