S&P ECOAIR LC Series Manual page 20

main supply with only two wires
(fi g.3). The humidistat causes the ex-
tractor to operate automatically when
the humidity level in the room is hi-
gher than the set level. The extractor
will stop automatically when the hu-
midity 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 (near
the sea) or the ambiance exceeds the
set level for a very long time. To pre-
vent 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 extrac-
tor keeps switched off during the set
time for interval function. If the hu-
midity level is still above the set level
when the time interval is over, the
extract fan switches on again and run
during one hour.
When, on the contrary, the extract fan
never switches on because the humidi-
ty level is always very low or it is impro-
perly installed (above heating applian-
ce, behind a door, in an area with no
air movement) putting the 1 dipswitch
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 func-
tion. This function causes the fan to run
whatever the humidity level.
To select this function put the
dip-switch 1 to position "ON".
20
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 "Auto-
matic 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 se-
lected 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 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 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. If you ex-
ceed 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 dipswitch 8.
This function is selected with
the dip-switch 8.