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EDM Axial Extractors
The EDM range extractors have been manufactured to the
rigorous standards of production and quality as laid down
by the international Quality Standards ISO 9001. All the
components have been checked and all the final products
have been tested at the end of the manufacturing process.
We recommend you to check the following when receiving
this product :
-
That it is the correct model.
-
That the details on the rating label are those you
require: voltage, frequency ...
The installation mus be in accordance with the electrical
standards in force in your country.
Installation
IMPORTANT: Before installing and wiring the EDM, ensure
that the main supply is disconnected.
Fig. 1
1 : Protection grille
2 : Cable entry
3 : Connection cover
4 : Fixing screw
The EDM can be installed on wall or ceiling, and the
discharge can be made direct to the outside or to a ducting
( indivifual or shunt, Fig. 2).
The hole to be made on the wall or the ceiling must have
the following diameter 105 mm. If the installation is made to
an individual ducting, use standard ducting 100 mm.
Loosen the screw (4) fixing the grille (1). Bind the adhesive
tape supplied around the outlet (6).
Ensure that there are no obstructions to the airflow and that
the impeller turns freely.
The unit must be fixed in such a way that it is not stressed,
to avoid noise generation or problems in the rotation of the
impeller. Connect the electrical wiring as explained
hereafter and then mount the protection grille and fixed it by
tightening the screw (4).
Electrical connection
The EDM 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 made 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 be introduced to the EDM
through the slot (7) if the wire is within the wall, or through
the cable entry (2) if the installation is with a surface
mounted cable; in this case, the cable must be introduced
as shown on Fig.3.
Once the cable has been introduced, open the connection
cover (3) and proceed to the appropriate electrical wiring
depending on the EDM model. Then close the connection
cover.
EDM models S and C
For these models use the following diagrams:
Fig.5 : Switching the extractor through the light switch.
Fig.6 : To switch the fan through an independent switch.
EDM models T,CT,R,CR and EC
Models fitted with fixed not adjustable timer ( T and CT) or
adjustable (R,CR and EC). The timer enables the extractor
5 : Connection terminals
6 : Outlet
7 : Slot
to continue running during the time delay, after the switch
has been switched off. The diagram on Fig. 7 shows how
to connect a unit fitted with timer using the light switch.
WARNING : Models T and CT require a few second
delay before the extractor operates.
Models R, CR and CE have an adjustable timer.
To adjust the timer, turn the potentiometer on the Printed
Circuit Board (Fig. 8) :
-
To increase the time delay turn it Clockwise (CW).
-
To decrease the time delay turn it Counter Clockwise
(CCW).
EDM models C,CT,EC,CR,CH and M
These models are fitted with automatic shutter.
WARNING: The opening of the shutter is facilited by
means of a thermal system that needs some seconds
to open completely.
EDM models H, CH and VMH
Models H, CH and VMH are provided with an electronic
hygrostat which can be adjusted from 60 to 90 % RH ( %
relative humidity). They are fitted with a pullcord switch (IC)
enabling override of the fan when the relative humidity level
in the room is lower than the set % RH value. A variable %
RH rotary switch on the front of the fan can be adjusted
without removing the grille.
Alternatively, the EDM-H, CH and VMH can be powered by
the light switch in preference to the pull cord switch.
Operation
Case 1 : Automatic operation ( Fig.9)
In this mode the pull cord switch is enclosed behind the
grille, in the "off" position (The pilot lamp will not switch on).
The hygrostat causes the extractor to operate automatically
when the humidity level in the room is higher than the level
shown on the variable rotary switch. Likewise, the extractor
will stop automatically when the humidity level drops below
the selected level.
WARNING : When the extractor is operating by
hygrostat, the red pilot lamp on the grille of the EDM is
not on.
Case 2: Automatic operation with pull cord override facility
(Fig. 10).
Automatic operation as in case 1 with the facility to override
the hygrostat by means of the pull cord when the humidity
level in the room is lower than the selected level on the
rotary switchl. When the pull cord is used to power the fan
the red pilot lamp (L) turns on.
Case 3: Automatic operation with facility to override by
light switch ( Fig. 11)
The operation of the extractor is the same as in case 2
although, the EDM is connected to the light switch (IL)
instead of the pull cord.
In this case leave the pullcord inside the fan in the "off"
position .
WARNING : When the relative humidity level in the
room is higher than the level selected on the rotary
switch, the automatic operation overrides the manual
operations (i.e.pull cord or light switch), that is, the
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