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1.3.2
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1.3.3
Safety Appliances and Precautions
The focus cannot be opened without tools;
It must be excluded that the fans can be contacted with the hand. Therefore, air ducts must be
connected to the focus. The minimum length of the pipelines is 900 mm.
Used Symbols
The following symbols are used in this manual:
Caution, special note!
Risk of:
- injury of the user or the installer
- damages to the device
- impairment of the operation of the device if the instructions are not
carried out properly
2 Notes for the User and the Installer
This section describes how to handle focus.
2.1
2.1.1
Brief Description
Limitations of Use
The device is applicable for the ventilation in the living and office area (with restrictions in the industrial
area) at air temperatures of -20°C to +40°C and normal air humidity. Any other type of use is considered
as use for purposes other than intended. It is especially prohibited to use the device for the exhaustion of
flammable and explosive gases. The installation is required in the frost-free area. For pre-heating of the
outside air (in winter), an applicable plant-specific frost protection equipment should be connected
upstream to the device.
2.1.2
Equipment Configuration
The focus is designed and manufactured for controlled home ventilation. The focus 200 in the standard
design has a patented reverse flow channel heat exchanger without moisture recovery. The device model
focus (F) 200 is equipped with a membrane moisture heat exchanger. The compact ventilation device is
designed for the wall fastening or on a mounting frame. The focus is delivered in the versions “RIGHT“ or
“LEFT“. The design type is specified at the identification plate on the device.
The housing consists of the coated sheet, the sidewalls in the colour anthracite, and the detachable hood
in aluminium white. The internal lining made of high-quality polypropylene provides the necessary
insulation and the device noise protection.
2.1.3
Heat Exchanger
The highly efficient reverse flow channel heat exchanger (German and European patent) made of plastic
is designed so that the exhaust air and supply air ducts are arranged in the chequer-board pattern and,
therefore, a duplication of the heat exchange surface can be achieved towards the plate heat
exchangers.
With the moisture heat exchanger also humidity is transmitted besides the heat due to the chemical and
physical properties of the heat exchanger membrane.
The air types that flow past each other are divided for both types of heat exchangers.
2.1.4
Fans
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.
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