Envirovent ECO dMEV LC, Руководство пользователя

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supply with only two wires (fi g.3). The
humidity sensor 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 ex-
tract fan is installed in very wet con-
ditions (near the sea) or the ambiance
exceeds the set level for a very long
time. To prevent the fan running 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 in-
terval is over, the extract fan switches
on again and runs for one hour.
When, on the contrary, the extract fan
never switches on because the hu-
midity 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 automatica-
lly for 1 hour and then it keeps swit-
ched 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:
The extractor is connected to the
main supply with three wires (fi g.4a
y 4b).
Operation as previous “Automatic
operation”, with the facility to ove-
rride the humidity sensor by means
of the light switch when the humidity
level in the room is lower than the se-
lected level. In this case the extractor
continues to operate for the selected
period of time (over-run timer) after
the light switch has been switched off.
ATTENTION: When the humidity rate
is above the selected value, the auto-
matic 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 you to delay the ex-
tractor start-up for a period of 50 se-
conds. So that, for example, the fan
does not switch on if the usage time
of the bathroom is less than 50s.
If you exceed the 50s, the fan switches
on, and when the light switches off,
runs the time set by the timer.
This function is selected with the dip-
switch 8.