S&P DECOR DESIGN Manuel D'instructions page 17

over-run timer. The timer allows the fan
to continue to operate for the selected
period after the switch has been turned
off (fig.5).
Fig.6 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 anti-
clockwise (min. 1 minutes)
• To increase the "run on" time, turn
clockwise (max: 30 minutes).
DECOR DESIGN CH, CHZ
Models provided with an electronic hu-
midistat which can be adjusted from 60%
to 90 % RH (relative humidity) and with a
timer, adjustable between 2 and 20 mi-
nutes.
SPECIFIC RECOMMENDATIONS
• If changing the settings of the fan you
have to handle the controls located on
the PCB. These adjusters are fragile and
must be handled with care.
• For humidity measurement is correct
we need the fan is installed in an area
where there is good air circulation.
• Do not adjust the humidity outside the
room where the vent should be in-
stalled.
• If the humidity level is consistently
above 90% RH, the fan will not stop.
OPERATION
Case 1: Automatic operation (fig.8). Hu-
midistat 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 hygrostat
by means of the light switch (fig.9), when
the humidity level in the room is lower
than the selected level. In this case, the
extractor continues to operate for the se-
lected period set on the timer after the
switch light has been switched off.
ATENTION: When the humidity rise
above the selected value, the automatic
option takes precedence over the manu-
al and the unit cannot then be switched
off using a switch.
SETTINGS
The fans are set to operate at 60% rela-
tive humidity and with 2 minutes run-on
time.
If the humidity in the room is lower than
60%, the fan will not turn on. If it is high-
er, the fan will operate until the humidity
level drops below 60%RH and then runs
for the length of time set by the timer.
The desired humidity level and time delay
are set by means of adjusters positioned
on the printed circuit board (fig. 10) and
accessible once the grille (1) has been
removed.
The humidity is set by the adjuster "% Hr":
• To reduce the humidity setting turn an-
ticlockwise (min.60 %)
• To increase the humidity setting turn
clockwise (max. 90 %)
EN
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