Boost ventilation mode with external boost ventilation sensing device 2.2.3
In most cases, boost ventilation sensing devices are mounted in exhaust air rooms such as bathrooms,
W.C.s or kitchens in order to activate temporary maximum ventilation in these rooms for fast discharge of
increased moisture and odours.
When operating this control element, the functional properties and visualisations described for the boost
ventilation mode are generated. The boost ventilation mode is started again at each activation and
interrupts the current operating mode for the duration set. Following this, the device switches back to the
previously active operating mode.
Maintenance by the operator 2.3
Maintenance of the ventilation device and plant by the operator is limited to the periodic change of the
filters and cleaning of the supply and extract air valves. The filter must be checked every 3 months and
changed if necessary, however, at least every 6 months.
In this context, also check other filters available inside the ventilation plant and change them if necessary.
A replacement or cleaning of the filter mats at the extract air valves (e.g. bathroom, kitchen, W.C.s)
should be carried out every 2 – 3 months or at your own discretion when checking the degree of soiling.
If maintenance work is not carried out regularly, this impairs the functioning of the comfort
ventilation in the long term!
Replacement of the filter 2.3.1
The plant must not be operated without filter. During filter replacement and maintenance
work, the ventilation device must be switched off!
Two high-quality original filters of the manufacturer are installed inside the FOCUS. After the
corresponding message of the control panel or after visualisation of a programmed digital output signal,
the filters in the FOCUS shall be checked. In order to do so, proceed as follows:
1. Switch the device to standby mode or disconnect it from the power supply.
2. Press both spring locks A and unlock with it the front plate.
Fig 4: Press of the spring locks
3. Remove the front plate B gradually according to the directions of the arrows. Open the front plate in
a corner from maximally 15 ° and hang them from the tin fold of the housing.
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