Maico EVN 22 Mounting & Operating Instructions

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5

Subject to change !

Window fans EVN 22,

EVN 22 P and EVN 22 R

These fans are to be used for extracting air from

offices, business rooms and commercial premises,

restaurants, doctors’ practices etc. The EVN 22 R

model can also be used for ventilating rooms.

•

EVN 22: For air extraction, with airstream-

operated external shutter

•

EVN 22 P: For air extraction, with airstream-

operated external shutter and pull-cord switch

for manual operation

•

EVN 22 R: For air extraction or ventilation, with

reversing mode and electrically operated external

shutter

The fans are designed to be installed vertically.

It is not permitted to install them on ceilings

or on sloping roofs or walls.

MAICO accepts no liability for damage caused by

non-authorised use.

Safety instructions

For your own safety, please read the following

safety instructions carefully before starting

to work with the unit. Please keep these

instructions in a secure place to ensure future

safety of operation.

•

Electrical connection work and repairs should

only be carried out by qualified electricians.

•

During electrical installation, ensure compliance

with the corresponding regulations, in particular

the pertinent sections of DIN VDE 0100. In

rooms with a bath or shower installed, for

example, part 701 is relevant.

•

Danger from rotating impeller: While the unit

is running, do not get too close to it with loose

hair or clothing as they may get caught up in it.

•

Do not insert any objects through the external

grille or the internal housing while the fan is

running as this may cause damage or injury.

•

This device may only be used:

– when correctly installed in flat glass windows

or in wall or wooden panels (see Installation

chapter).

– when there is sufficient space between it and

the window frame, wall or ceiling.

– when the unit is installed complete with external

shutter and internal housing.

– only if the external shutter is operated together

with the EVN-22 internal part.

•

This device may not be used:

– with hinged double-glazed windows.

– in vicinity to inflammable materials, fluids or

gases.

– in areas subject to explosion hazards

•

If the fans are being used with air-ventilated

fireplaces, you must ensure that there is sufficient

flow of supply air. The maximum permitted

pressure difference is 4 Pa.

•

The maximum permitted airstream temperature

is 40°C.

•

The motor has a thermal overload protection,

which switches the unit off in the event of

overheating. Once the unit has cooled down

again, the fan switches back on automatically.

•

Before removing the terminal box cover [4],

disconnect the unit completely from the power

supply. To do this, switch off the mains fuse at

the fuse box.

•

When painting the external shutter, make sure

that this will not have any adverse effect on the

operation of the unit.

•

The device must not be put into operation if it is

damaged.

•

The fan is designed in accordance with the

safety requirements within the framework of the

equipment and product safety act as well as the

pertinent regulations laid down in the EC directives.

•

Modifications and changes to the device are not

permitted and if carried out, they release MAICO

from any and all guarantee commitments or

liability.

Electrical connection:

•

Please refer to the last page for the circuit

diagrams.

•

The fan may only be connected with cabling

between 0.75 and 1.5 mm

2

. This must be fitted

with a mains isolation device that has contact

openings of at least 3.0 mm at each pole.

•

The degree of protection is only guaranteed if the

cabling is fed in correctly through the

corresponding cable grommet [T1] or [T2].

•

The power supply must comply with the rated

voltage stated on the rating plate.

6

Function

The fan is switched on using a switch that must be

supplied by the customer. A reversing switch should

be used with the EVN 22 R.

EVN 22 P fans with pull-cord switch are switched on

and off using the pull-cord.

Overview

Replacement parts are printed bold. When

ordering replacement parts please quote the

instruction document number, see back page),

the unit version and the corresponding position

number.

1 External shutter with flaps, complete

2 Connecting flange, complete

2.1 Motor

2.2 Impeller

3 Internal housing, complete

4 Terminal box cover

5 Gluing points (2 pieces)

6 Screws, M5 x 50 mm (4 pieces)

7 EVN 22 R external shutter connection cable

8 Lock nut

9 Socket spanner size 8, red

10 Tension relief

11 Terminal block (3 or 7 pin)

12 Sealing (Standard and R model)

13 Pull-cord switch (P model)

L Power cable

Installation

Important notes

•

Installation should only be carried out by a

specialist.

•

Danger of injury through cutting: The pane of

glass should not be placed under tension as it

may crack while the unit is being built in. If

necessary, remove the pane and reposition it so

that it is no longer under tension.

•

Glass/wall thickness = 3 - 30 mm.

•

Only install the fan vertically.

•

Under no circumstances should the external

shutter [1] be dismantled.

•

Only install the external shutter on a level surface

in order to ensure correct functioning.

A Lay the power cable [L]. Employ the ser-vices

of an expert to make the cut-out in the

window [S]. Clean the pane thoroughly before

gluing the external shutter into position. In the

case of installation in a wall or wood panel, use

a drill to make the cut-out [S].

B Dismantle the inner part. To do this, hold

the internal housing [3] firmly at the side and

pull the connecting flange [2] on the motor out

of the internal housing.

Remove the terminal box cover [4]. In the case

of wall or wood panel installation, drill through

the connecting flange at the two marked

locations [Y].

In the case of wall or wood panel installation:

With the flaps open, drill through the four

marked locations [Z] in the external shutter [1].

C Install the external shutter [1].

External side of window pane: Insert the four

screws [6] into the eyelets in the external

shutter, until they click into position. Remove

the protective foil from the gluing points [5].

Line the external shutter up in the cut-out and

press it onto the pane. With the EVN 22 R, feed

the connection cable [7] through the cut-out

first.

External side of wall or wood panel: Fix the

external shutter [1] to the wall or wood panel

with suitable material.

D,E Assemble internal part.

Internal side of window pane: Locate the

connecting flange [2] onto the screws [6], line

it up and press lightly on the screws. Tighten

the locking nuts [8] with the socket spanner [9]

by hand.

Please note: Tighten the nuts [8]

carefully so that the unit and the glass

pane are not damaged.

In the case of the EVN 22 R, insert the connection

cable [7] in the connecting flange, as shown in

display detail „E“.

Internal side of wall or wood panel: If required,

fix the connecting flange [2] to the wall or

wood panel with suitable material.

F Carry out the electrical connections. To

do this, make a circular hole in the connecting

flange with the cable grommet [T1], insert the

power cable [L] and attach the tension relief

[10]. Wire the fan up to the terminal block [11]

according to the wiring diagram located on the

last page.

i

Subject to change !

7

EVN 22 R: Feed the connection cable [7] into the

terminal box beforehand and wire it up according

to the wiring diagram.

G Put the terminal box cover [4] on and screw

it into position, ensuring that the sealing [12] is

correctly located. With the EVN 22 P, the pull-

cord must be inserted correctly into both guides.

Locate the internal housing [3] into posi-

tion. To do this, hang the internal housing on

the top of the connecting flange [2] at position

➀, and then click it down into position on the

catch at position ➁. Don’t bend or distort it.

Carry out a function test and you are ready.

With the EVN 22 R, the external shutter opens and

closes with a time delay. The lamella are fully opend

or closed after about 1 to 2 minutes.

Cleaning

•

Remove internal housing [3]: Hold the internal

housing left and right on the bottom edge and

pull it forwards, with the same pressure on each

side as shown in the top display detail in Figure

„B“. Under no circumstances should the internal

housing be pulled from the top or by using the

internal grille.

•

Clean the internal part with a dry cloth or use a

vacuum cleaner if required. Open the flaps

upwards to clean the external shutter.

•

Never use any cleaning agents that may be

injurious to health or that are abrasive or easily

inflammable.

•

Finally, replace the internal housing [3] as shown

in Figure „G“.

Do not clean the internal housing

in a dish washer.

Troubleshooting

A malfunction can occur, for example, if the

airstream temperatures are too high or if the fan

motor is blocked. The overload protection device

reacts and switches the fan off.

Warning

The fan starts up again automatically once

the fan motor has cooled down.

•

If the fan fails to operate, always check whether

mains fuse is switched on. If necessary, have the

fan’s wiring checked by an electrician. Before

starting such work, make sure the fan is com-

pletely disconnected from the mains and wait

until the fan has come to a complete stop.

•

Allow the fan motor to cool down and then the

fan will switch back on automatically (the ther-

mal switch resets automatically).

•

If the unit fails to restart or if it breaks down

again, remove the power and call on the services

of a specialist.

Technical data

See rating plate.

Subject to change !

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Maico EVN 22 Mounting & Operating Instructions

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