4
• The device should not be used for applications other than those specified in this manual.
• After removing the product from its packaging, verify its condition. In case of doubt, contact a qualified technician. Do not leave packaging
within the reach of small children or people with disabilities.
• Do not touch the appliance with wet or damp hands/feet.
• The device is not intended for use by persons (including children) with reduced physical, sensory or mental capacities or those with a lack of
experience and knowledge, unless they have been given supervision or instruction concerning use of the device from a person responsible for
their safety.
Children should be supervised to ensure that they do not play with the device.
• Do not use the product in the presence of flammable vapours, such as alcohol, insecticides, gasoline, etc.
• If any abnormalities in operation are detected, disconnect the device from the mains supply and contact a qualified technician immediately. Use
original spare parts only for repairs.
• The electrical system to which the device is connected must comply with regulations.
• Before connecting the product to the power supply or the power outlet, ensure that:
- the data plate (voltage and frequency) correspond to those of the electrical mains
- the electrical power supply/socket is adequate for maximum device power. If not, contact a qualified technician.
• The device should not be used as an activator for water heaters, stoves, etc., nor should it discharge into hot air/fume vent ducts deriving from
any type of combustion unit. It must expel air outside via its own special duct.
• Operating temperature: 0°C up to +50 °C.
• The device is designed to extract clean air only, i.e. without grease, soot, chemical or corrosive agents, or flammable or explosive mixtures.
• Do not leave the device exposed to atmospheric agents (rain, sun, snow, etc.).
• Do not immerse the device or its parts in water or other liquids.
• Turn off the main switch whenever a malfunction is detected or in case of cleaning/maintenance.
• For installation an omnipolar switch should be incorporated in the fixed wiring, in accordance with the wiring regulations, to provide a full
disconnection under overvoltage category III conditions (contact opening distance equal to or greater than 3mm).
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a
hazard.
• Do not obstruct the fan or exhaust grille to ensure optimum air passage.
• Ensure adequate air return into the room in compliance with existing regulations in order to ensure proper device operat
• If the environment in which the product is installed also houses a fuel-operating device (water heater, methane stove etc., that is not a “sealed
chamber” type), it is essential to ensure adequate air intake, to ensure good combustion and proper equipment operation.
• Install the product so that the impeller is not accessible from the air outlet side as verified by contact with the Test Finger in compliance with
the current safety regulations.
PRECAUTIONS FOR INSTALLATION, USE AND MAINTENANCE
OPERATION
VERSIONS
QBX...AC 3V
The unit is equipped with a 3 speed AC motor and back-curved centrifugal impeller.
QBX...EC
The unit is equipped with EC motor, for energy saving and back-curved centrifugal impeller.
QBX...EC PLUS
The unit is equipped with EC motor, for energy saving and forward-curved centrifugal impeller.
QBX...AC 3V
Single speed operation
The unit is activated by means of a remote ON/OFF switch or light switch.
Wiring diagram: Fig.5A
Three speed operation with SEL-3V speed selector (accessory on request)
The unit runs at the speed selected by turning the knob of the SEL-3V speed selector (fig.8).
Wiring diagram: Fig.5B
QBX...EC and QBX..EC PLUS
Single speed operation
The unit runs at the speed set by turning the integral trimmer “V1” in the terminal box.
This is the default factory setting.
Wiring diagram: Fig.6A – Dip switch configuration: 0000 (Fig.6F)
Two speed operation
The unit runs continuously at the speed set by turning the integral trimmer “V1” in the terminal box and can be boosted at high speed, which
is set by turning the integral trimmer “V2” in the terminal box. Boost is activated, when needed, by means of a remote two-position switch (not
supplied) or by means of remote sensors (SEN-HY, SEN-CO2 or SEN-PIR), which are accessories on request.
Wiring diagram: Fig.6B – Dip switch configuration: 1000 (Fig.6F)
