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6 Technical data
To dehumidify garages, the frost protection func-
tion can be switched off via the DIP switch. To do
this, set the DIP switch to the lower position.
Manual ventilation – button:
The unit switches the fan on and off automatically
and in a manner optimised to demand. When off,
the fan can be switched on manually with button
and manual ventilation therefore takes place.
Manual operation is ended by again pressing but-
ton or automatically after approximately 30
minutes.
The fan cannot be switched off manually using
the button when in the automatic operating mode.
Manual ventilation – external button/switch:
In addition to the button, manual operation can
take place with an external button or switch, see
Wiring diagrams [} 39].
For this purpose, automatic button/switch detec-
tion is carried out during the first actuation, after
power is supplied. A switch is considered to be
connected if the switching contact is active for
more than 3 seconds.
Manual ventilation with an external button is equi-
valent to using the unit's internal button.
If an external switch is connected, manual ventila-
tion is switched on or off in accordance with the
switch setting. When the switch is switched on,
the fan switches off after 30 minutes.
The fan cannot be switched off manually using
the button when in the automatic operating mode.
Manual ventilation is also possible during
frost protection.
NOTICE Damage to the building fabric due to
manual ventilation
Excess manual ventilation can lead to room hu-
midification if the outdoor conditions are humid.
Therefore, you must pay attention to the duration
of ventilation when using an external switch.
6 Technical data
6.1 Ambient conditions
• Permissible maximum temperature of air me-
dium + 40 °C.
• Sufficient supply air intake must be ensured
during operation with air-ventilated fireplaces.
The maximum permitted pressure difference
per residential unit is 4 Pa.
6.2 Technical data table
See rating plate or www.maico-ventilatoren.com.
7 Mounting preparations
Suitable mounting material is to be
provided by the customer.
7.1 Wall
Use mounting material suitable for base and of
sufficient dimensions. Ensure sufficient supply air.
The prescribed minimum distances to the
wall and the ceiling shown in the figure must
be observed.
1. Make sure the housing has a level base.
2. Fit wall breakthrough or drill core hole: Min-
imum diameter, 150 mm.
ð Recommendation: Fit WH 150 wall sleeve.
Fit a wall breakthrough with a minimum dia-
meter of 170 mm.
3. Lay power cable (flush-mounted) up to install-
ation location, see above for spacing. Feed
the power cable at least 110 mm out from
the wall.
7.2 Ceiling
1. Perform installation preparations as described
in Chapter Wall [} 19].
NOTICE Danger of short-circuits and damage
to unit if condensation builds up in the fan
housing.
Thermally insulate ventilation ducts properly. Al-
low for a condensation drain or condensate col-
lector in the riser.
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