- Switch 1: “Interval” function selection (yes
or no)
- Switches 2 and 3: Interval time settings
between 4, 8, 12 and 24 hours
- Switches 4 and 5: Humidistat settings
between 60, 70, 80 and 90%
- Switches 6 and 7: Over-run timer
settings between 1, 5, 15 and 30 minutes
- Switch 8: Start-up timer function (yes or
no)
Automatic operation:
The extractor is connected to the main
supply with only two wires. (Fig.4) (Fig.6).
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
(-5% or +10%) and after the selected period
set on the over-run timer.
"Interval” functions:
This function is useful when the extract fan
is installed in very wet (near the sea) or the
ambiance exceeds the set level for a very
long time. To prevent the fan to run for
hours without stopping, the "Interval"
function allows the fan to switch off
automatically one hour after it began to run.
The extractor keeps switched off during the
set time for interval function. If the humidity
level is still above the set level when the
time interval is over, the extract fan switches
on again and run during one hour. To select
this function put the dip-switch 1 to position
"ON”
To adjust the set time for interval function,
use the dip-switches 2 and 3.
When, on the contrary, the extract fan never
switches on because the humidity level is
always very low or it is improperly installed
(above heating appliance, behind a door, in
an area with no air movement) putting the 1
dip-switch interval function to position "ON",
the fan switches on automatically during 1
hour and then it keeps switched off during
the set time for interval function. This
function causes the fan to run whatever the
humidity level.
To select this function put the dip-switch 1
to position "ON”
To adjust the pre-set time for interval
function, use the dip-switches 2 and 3.
Automatic operation with external switch to
override the extractor: (Fig.3) (Fig.7)
The extractor is connected to the main
supply with three wires.
Operation as previous “Automatic
operation”, with the facility to override the
humidistat by means of the light switch
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 of time (over-run timer) after
the switch light has been switched off.
ATENTION: When the humidity 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.
Start-up timer function:
In this operation, the “start-up timer
function” allows to delay the extractor start-
up for a period of 50 seconds. So that, for
example, the fan does not switch on if the
usage time of the bathroom is less than 50s.
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