Specifications

Electrical connection
The SILENT is an extractor designed for a single phase supply, with voltage and
frequency as indicated on the rating plate of the unit. The units are manufactured with
double electrical insulation (Class II) and therefore they do not need an earth
connection.
The electrical installation must include a double pole switch with a contact clearance of
at least 3 mm.
The electrical cable must enter the SILENT through the cable entry (4).
The SILENT must be connected to the electrical supply in accordance with local wiring
regulations.
Once the cable has been introduced proceed using the electrical wiring diagram
applicable to the selected model.
SILENT S
For these models use the following diagrams:
Fig.3: Switching the extractor through the light switch.
Fig.4: To switch the fan through an independent switch.
SILENT T
This model is provided with an adjustable over-run timer. The timer allows the fan to
continue to operate for the selected period after the switch has been turned off (fig.6).
Fig.5 shows how to connect the fan with timer utilising the same switch as for the
lighting circuit.
To set the timer, turn the potentiometer on the printed circuit board as (fig. 7).
- To reduce the "run on" time, turn anticlockwise (min. 1 minute)
- To increase the "run on" time, turn clockwise (max: 30 minutes).
SILENT-100 IT (this version is only available as SILENT-100)
This model is provided with an adjustable over-run timer. The timer allows the fan to
continue to operate for the selected period after the switch has been turned off (fig.6).
ATTENTION: The product also includes an over-run timer facility that
starts the fan after the first 50 seconds of non-operation. After these first 50
seconds the fan operates automatically.
SILENT HT
IMPORTANT:
Do not remove the tape covering the humidity sensor located on the reserve
of the grille.
Models provided with an electronic humidistat which can be adjusted from 60% to 90 %
RH (relative humidity) and with a timer, adjustable between 2 and 20 minutes.
Operation
Case 1: Automatic operation (fig.9)
In automatic operation, the humidistat causes the extractor to operate automatically
when the humidity level in the room is higher than the set level. The extractor will stop
automatically when the humidity drops below the selected level and after the selected
period set on the timer.
Case 2: Automatic operation as in case 1 with the facility to override the humidistat by
means of the light switch (fig.8), when the humidity level in the room is lower than the