2 Hints for the operator and the qualified personnel
This section describes how to use the FOCUS.
Product description 2.1
The FOCUS is a ventilation device with heat recovery for healthy, balanced and energy-saving comfort
ventilation. A comfort ventilation system consists in exhausting stale, odorous air for example from the
kitchen, the bathroom, W.C.s and in introducing an equal quantity of fresh air into living rooms, bedrooms
and children’s rooms.
For heat recovery, the FOCUS is equipped with a reverse flow channel heat exchanger of plastic.
Optionally, a summer box is used instead of the heat exchanger as a module for the thermal separation of
the two air streams.The casing is made of powder-coated sheet metal with anthracite colouring. The
internal lining made of high-quality polypropylene provides the necessary heat insulation and device noise
protection.
The FOCUS includes two maintenance-free 230 Vac radial fans with the integrated power supply unit and
electronic commutation. The volume flow constant fans keep the air quantity at a constant speed for each
selected fan rotary speed. The air quantity is also not affected by soiled filters.
One filter each for the intake air and the extract air are installed in the device. They consist of a synthetic
woven filter medium with a frame made of polypropylene. Filters of the filter class F7 in pollen filter
quality can be optionally used for the intake air. Access to the filtering is done on the front plate.
Fig 1: Main components FOCUS
Summer box – module for the thermal separation of the air streams
Housing made of coated steel sheet
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