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Operation
Case 1: Automatic operation (fi g.9).
In automatic operation, the humidistat
causes the extractor to operate automa-
tically 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 hygrostat
by means of the light switch (fi g.8), when
the humidity level in the room is lower
than the selected level. In this case, the
extractor continues to operate for the
selected period set on the timer after the
switch light has been switched off.
ATENTION: When the himidity rate is
above the selected value, the automatic
option takes precedence over the manual
and the unit cannot then be switched off
using a switch.
The desired humidity level is selected by
means of a potentiometer "% Hr" posi-
tioned on the printed circuit board (fi g.10)
and accessible once the grille (1) has been
removed.
− To reduce the humidity setting turn anti-
clockwise (min.60 %).
− To increase the humidity setting turn
clockwise (max. 90 %).
To set the timer, turn the potentiome-
ter "t min." on the printed circuit board
(fi g.10):
− To reduce the "run on" time, turn anti-
clockwise (min. 2 minutes).
− To increase the "run on" time, turn cloc-
kwise (max: 20 minutes).
18
SILENT-100 CHZ 12V
For this models use wiring diagram fi g.13
SILENT-100 CHZ VISUAL (this version is
only available as SILENT-100)
These models are provided with an elec-
tronic humidistat which can be adjusted
between 60, 70, 80 or 90% RH (relative
humidity) and with an automatic run-
on-timer, adjustable between 5, 10 or 20
minutes. The humidistat adjustment can
be made using the corresponding adjust-
ment touch without the need to remove
the front grille of the fan.
HUMIDISTAT
The desired humidity level is selected by
means of an adjustment touch (5 fi g.11)
located on the front grill. The correspon-
ding relative humidity level, 60-70-80 or
90%, is then visually indicated via one of
four neon lights. All models are factory
set as standard to a 90% relative humidity
level.
O VER-RUN TIMER
This product controls automatically the
over-run time, which is proportional to
the time that has been needed to bring the
relative humidity level to the adjusted le-
vel, depending on which the over-run will
range from 2 minutes to a maximum of 20
minutes.
Operation
Case 1: Automatic operation (fi g.9).
In automatic operation, the humidistat
causes the extractor to operate automa-
tically when the humidity level in the room
is higher than the pre-set level. The ex-
tractor will stop automatically when the
humidity drops below the selected level
and after the selected period set on the
over-run timer.
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