Envirovent ECO dMEV LC Manual

ECO dMEV LC
Instruction leaflet

Fig.1 6
7
2 3 41 5 6 7 8
ON
9
+
-
ON
OFF
4
5
1
23
8

Fig.2

Fig.3
J2
GND
LS’
J1
LS
N
L
+17V
L
N
ECO dMEV LC
KIT ECO dMEV LC + CT-17/18
230Vac
50/60Hz
CT-17/18
L
N230Vac
50/60Hz
0
+17V
DC

Fig.4
J2
GND
LS’
J1
LS
N
L
+17V
KIT ECO dMEV LC + CT-17/18
CT-17/18
230Vac
50/60Hz
L
N
230Vac
50/60Hz
N
L
0
+17V
DC
ECO dMEV LC
230Vac
50/60Hz
L
N
a
b
230Vac
50/60Hz
N
L
b
a

Fig.5
L
N
J2
GND
LS’
J1
LS
N
L
+17V
L
N
KIT ECO dMEV LC + CT-17/18
230Vac
50/60Hz
CT-17/18
230Vac
50/60Hz
0
+17V
DC
ECO dMEV LC

ENGLISH
ECO dMEV LC Centrifugal Extractor
Fans
The ECO dMEV LC extractor fan range
is manufactured to the highest standards
of production and quality as laid down by
the international Quality Standard ISO
9001. All components have been
checked and every one of the final
products will have been individually
tested at the end of the manufacturing
process.
On receipt of the product we recommend
that you to check the following:
1- That it is the correct model.
2- That the details on the rating label are
those you require: voltage, frequency...
The installation must be carried out in
accordance with the electrical standards
in force in your country.
This appliance is not intended for use by
young children or infirm persons unless
they have been adequately supervised
by a responsible person to ensure that
they can use the appliance safely.
Young children should be supervised to
ensure that they do not play with the
appliance
Installation
IMPORTANT: Before installing and
wiring the unit, ensure that the main
supply is disconnected.
Fig. 1:
1: Front grille
2: Protection cover
3: Support
4: Connection terminals
5: Cable entry
6: Dip switches
7:
8: Air filter
Potentiometer for speed adjustment
The ECO dMEV LC is suitable for wall or
ceiling mounting and can either extract
directly to the outside or via an individual
ducting system (see Fig. 2).
Make a hole in the wall or ceiling of
diameter 105 mm.
If the unit is to be installed with individual
ducting, use a standard duct of diameter
100 mm.
Remove the front grille (1) and the
protection cover (2).
The unit can be mounted on the wall or
ceiling using the 4 plastic plugs and the
screws provided.
Ensure that there are no obstructions to
the airflow and that the impeller turns
freely.
Introduce the mains cable through the
cable entry (5) and fix it to the wall.
Connect the electrical wiring as set out
below and then mount the protection
cover and the front grille.
Electrical connection
The ECO dMEV LC is an extractor
designed for a single phase supply, with
voltage and frequency as indicated on
the rating plate of the unit. The units are
manufactured with double electrical
insulation (Class II) and therefore they
do not need an earth connection.
The electrical installation must include a
double pole switch with a contact
clearance of at least 3 mm.
The electrical cable must enter the ECO
dMEV LC through the cable entry (5).
Once the cable has been introduced
proceed using the electrical wiring
diagram applicable to the selected
model.
Operation
The ECO dMEV LC is an extractor fan
designed to operate continuously at low
speed (adjustable) with the facility to be
set to high speed (fixed) through the
following functions depending on the
version: an external switch live or light
switch (S, T and HT versions); the

humidity sensor (HT and HTP
versions); the internal pull cord switch
(HTP version);or the PIR detector (DT
version).
The extractor can also be used for
intermittent operation with adjustable
speed at installation.
In both cases the speed setting is done
when installing the extractor, with the
potentiometer (7) placed on the
electronic PCB (fig.1).
Please commission the fan at 9l/s or
above to meet SAP requirements.
The selection between continuous
operation and intermittent operation is
done with the dip-switch 9:
- Continuous operation: ON
- Intermittent operation: OFF
ATTENTION: In intermittent operation,
mount the backdraft shutter on the fan
outlet.
ECO dMEV S LC
1.Continuous operation only on trickle
setting (Fig. 3).
Once the air volume is set the fan is
connected to the mains and the unit
will operate continuously at this air
volume.
2.Continuous operation on trickle with
ability to boost at high speed.
The ECO dMEV S LC is connected to
an external switch or light switch.
When the switch is closed, the fan
runs at full speed until the switch
opens again (light off):
Fig.4a- Wiring diagram to boost the
fan with the light switch.
Fig.4b- Wiring diagram to boost the
fan with a separate switch
3.Intermittent operation: With dip-switch
9 set to OFF the extractor runs at the
pre-set speed when the switch is
closed:
Fig.4a- Wiring diagram to switch on
the fan with the light switch.
Fig.4b- Wiring diagram to switch on
the fan with a separate switch.
Start-up timer function:
In this operation, the “start-up timer
function” allows you 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 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.
ECO dMEV T LC
This model is provided with an
adjustable over-run timer.
The selection of the run on time is done
with the dip-switches 6 and 7: setting
between 1, 5, 15 and 30 minutes
Factory setting: 1 minute
1.Continuous operation: The timer
allows the fan to continue to operate in
high speed for the selected period
after the switch has been turned off.
Fig.4a- Wiring diagram to boost the
fan with the light switch.
Fig.4b- Wiring diagram to boost the
fan with a separate switch
2.Intermittent operation: The timer
allows the fan to continue to operate
for the selected period after the switch
has been turned off (fig.4a and 4b).

Start-up timer function:
In this operation, the “start-up timer
function” allows the fan to delay the
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 exceed the 50s, the fan
switches on, and when the light
switches off, runs on for the time set
by the timer.
This function is selected with the dip-
switch 8.
ECO dMEV HT LC
Models provided with an electronic
humidity sensor which can be adjusted
from 60% to 90 % RH (relative humidity)
and with a timer, adjustable between 1
and 30 minutes.
The selection of desired humidity level is
done with the dip-switches 4 and 5:
setting between 60, 70, 80 and 90 %RH
The selection of the run on time is done
with the dip-switches 6 and 7: setting
between 1, 5, 15 and 30 minutes
Continuous operation
1.Automatic operation (fig.3): the
extractor is connected to the main
supply with only two wires. The
extractor operates continuously at the
setting trickle speed. When the
humidity level in the room is higher
than the set level the fan is boosted to
high speed. When the humidity drops
below the selected level and after the
selected period set on the timer the
fan automatically returns to trickle.
2.Automatic operation with the facility to
override the humidity sensor and
make the extractor run in boost by
means of an external switch (fig.4a) or
the light switch (fig.4b), when the
humidity level in the room is lower
than the selected level. In this case,
the extractor operates in high speed
for the selected period set on the timer
after the light switch has been
switched off, and then goes back in
low speed unless the humidity level
exceeds the set point.
ATTENTION: When the humidity rate
is above the selected value, the
automatic option takes precedence
over the manual.
Specific recommendations:
- If the humidity is always above 90%
RH, the fan will always run at full
speed.
- If the humidity in the room is always
less than 60%, the fan will only
operate at trickle speed when running
in automatic operation.
If the fan never runs at boost:
- The setting of the humidity sensor is
at maximum. Change the setting
- The level of humidity in the room is
below 60% RH
If the fan always runs at boost
- The setting of the humidity sensor is
at minimum. Change the setting
- The level of humidity in the room is
above 90% RH
Intermittent operation
Automatic operation:
The extractor is connected to the main
supply with only two wires (fig.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 extract
fan is installed in very wet conditions
(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
interval 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 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 for 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:
The extractor is connected to the main
supply with three wires (fig.4a y 4b).
Operation as previous “Automatic
operation”, with the facility to override
the humidity sensor 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 light switch has
been switched off.
ATTENTION: 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 you 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 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.
ECO dMEV HTP LC
ECO dMEV LC version similar to HT
model, fitted with an internal pull cord
switch to operate the boost when the
humidity level is below the set point
(fig.5)
When switching off the internal pull cord
switch, the fan continues to operate on
boost for the time set by the timer, then
runs on trickle speed, unless the
humidity level exceeds the set point.

ECO dMEV DT LC
Models provided with a PIR (passive
infra-red) detector (movement detected
with a maximum distance of 4 metres)
and with an adjustable "run on" timer (1
to 30 minutes).
The selection of the run on time is done
with the dip-switches 6 and 7: setting
between 1, 5, 15 and 30 minutes
1. Continuous operation:
The extractor operates continuously at
the setting trickle speed. When the
extractor detects a movement the fan
is boosted to high speed during the
selected period set by the over-run
timer and then automatically returns to
trickle speed (fig.3).
2. Intermittent operation:
The unit starts automatically when a
movement is detected and the unit
continues to operate for the selected
period set on the over-run timer (fig.3).
Factory settings:
-Interval function: OFF
-Interval time: 4h
-Humidity sensor: 60%HR
-Timer: 1 minute
-Start-up timer function: OFF
-Continuous operation: ON
Maintenance
After Sales Service
We recommend you not to try to
dismantle or remove any other parts
than those mentioned as any tampering
would automatically cancel the
EnviroVentguarantee. If you detect any
fault, contact your EnviroVent dealer.
EnviroVentreserves the right to alter specifications
without notice.
IMPORTANT: DISCONNECT FROM THE
MAINS SUPPLY BEFORE CARRYING
OUT ANY MAINTENANCE
The ECO dMEV extract fan is supplied
with a metallic filter.
Performance depends on cleaning
frequency and thus we recommend
cleaning, minimum every two months, in
accordance with fig 1b.
The ECO dMEV extract fan must always
be operated with the filter fitted.
Using the extract fan without the filter
invalidates the warranty.
The external surface of the fan only
requires periodical cleaning using a cloth
lightly impregnated with a soft detergent.

EnviroVent Ltd
EnviroVent House
Hornbeam Business Park
Harrogate
01423 810 810
www.envirovent.com
HG2 8PA
[email protected]
Ref. 9023045201