UK │ 5. Product information
18
Manual ventilation – external
button/switch:
Optionally to button 2, manual operation can
take place with an external button or switch,
see wiring diagram in Chapter 15.
To achieve this, an automatic button/switch
recognition via the duration of the first
activation after power is supplied. A switch is
recognised when the switching contact is
closed for more than 10 seconds.
Manual ventilation with an external button is
equivalent to using button 2.
If an external switch is connected, manual
ventilation is switched on or off in accordance
with the switch setting. An automatic switch-
off of the manual operating mode does not
exist in this case.
Manual ventilation is also possible
during frost protection and protection
against insufficient humidity.
NOTICE
Damage to the building fabric
due to manual ventilation
Excess manual ventilation can
lead to room humidification if the
outdoor conditions are humid.
Therefore, you must pay
attention to the duration of the
manual ventilation when using an
external switch.
6. Environmental conditions and
operating limits
●
Permissible maximum temperature of air
40 °C.
●
Sufficient supply air intake must be
ensured during operation with air-ventilated
fireplaces. The maximum permitted
pressure difference per living unit is 4 Pa.
7. Technical data
See rating plate or Internet.
8. Installation preparations
8.1 Wall
The prescribed minimum distances
between 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:
Minimum diameter, 105 mm.
Recommendation: Fit WH 100 wall
sleeve Fit wall breakthrough with
minimum diameter 115 mm.
Use ZM 11 mounting plate for
rectangular wall breakthroughs.
3. Lay power cable (recessed) up to place of
installation, see above for spacing.
Feed
the power cable at least 110 mm out
from the wall.
8.2 Ceiling
NOTICE
Danger of short-circuits and
damage to unit if condensation
builds up in the fan housing.
Thermally insulate ventilation
ducts in a professional manner.
Allow for a condensation drain or
condensate collector in the riser.
Perform installation preparations as
described in Chapter 8.1.
