ENGLISH
the outside of the appliance, c) if the appliance is not to be used for any length of time.
• The room must have an adequate source of replacement air for this appliance to function effectively. In the
event that other non-sealed combustion based appliances (such as water heaters, gas stoves, etc.) are
installed in the same room, check that air replacement is sufficient for all appliances to work effectively
together.
• The appliance must either exhaust directly to the outside or into a short duct (max 400 mm to ensure the
certified technical data; efficiency losses will occur if the appliance is installed in ducting subject to any
appreciable level of back pressure).
• The appliance cannot be used to control water heater switches, heaters, etc.; neither must it expel air into the
hot air ducts of such appliances.
• The air or fumes to be extracted from the room must be clean (i.e. free of grease, soot, chemical and corrosive
agents, and explosive or flammable mixtures) and must not exceed a temperature of 50°C (122°F).
• Keep the appliance's intake and outlet grilles free to ensure an optimum flow of air.
• Specifications for the power supply must correspond to the electrical data on ID plate A (Fig.1)
The appliance must be installed by a professionally qualified
•
electrician.
A multi-pole switch must be used to install the appliance. The contact
•
opening gap must be no less than 3 mm.
Items supplied
The fan unit is enclosed in a plastic cylinder incorporated in the motor carrier, which can be entirely
accommodated in the destination pipe and whose short length makes it perfectly compatible with installation
near elbow bends (90°), typical of pipe fittings. The main parts of the appliance are:
• Motor carrier and front panel, made of ABS thermoplastic, impact resistant and anti-UV resin;
• Centrifugal rotor made of PP resin, designed for high performance, low power consumption and low noise
emissions;
• Motor with shielded poles, equipped with ball bearings and fitted with a thermal fuse.
• PCB (T models).
Installation
Figg. 2 ÷ 13
N.B. whatever the orientation of the appliance, the non-return valve must always be in a vertical position (Fig. 8,
9).
N.B. if the non-return valve should come out of place and/or split into its halves, it will be possible to reposition
it as shown in Fig. 9a, 9b.
Trimmer settings (T models)
There is a trimmer on the PCB which can be used to adjust the duration of the switch-off delay (factory set to 2
minutes). The delay duration can be adjusted up to approximately 20 minutes using the trimmer (Fig. 14).
Use
Basic models
This appliance is operated by switching it on using the power switch.
Timer models
This appliance is operated by switching it on using the power switch. The integrated timer controls the switch-off
delay. After it is switched off by means of the switch, the appliance will therefore continue to run for the set
amount of time.
Electrical connections
Fig. 15 ÷ 16
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