• The fan must be installed according to the air direc-
tion label on the fan.
• The fan must be connected to duct or equipped with
a safety grille.
• The fan should be installed in a safe way and make
sure that no foreign objects are left behind.
• The fan should be installed in a way that makes ser-
vice and maintenance easy. N.B.! Consider the
weight and size of the fan.
• The fan should be installed in a way that vibrations
not can be transfused to duct or building. To provi-
de this, use for example a flange.
• Electrical installations must be made by an authori-
zed electrician.
• Electrical installation must be connected to a local-
ly situated isolator switch or by a lockable main
switch.
• Control that the fan is installed and connected elec-
trically in the right way, grounded and with motor
protection.
• For single phase fans a residual current device i
T
used
(type A).
• Wiring diagrams for each product see page 32 and
the Technical Data on page 33.
AC-MOTOR
• For speed regulation of AC motor a transformer or
thyristor can be connected.
• The AC motor has a built-in thermal contact.
EC-MOTOR
• Speed regulating of EC
motor can be done with
the built-in potentio-
meter, 0-10 V.
An external potentio-
meter can be connected
to the terminal if neces-
sary. The internal poten-
tiometer should then
be disconnected.
• The EC motor has tachometer output one pulse per
revolution.
•
EMC-COMPATIBLE INSTALLATION OF EXTERNAL
CONTROL LINES:
The control cable may not be
longer than 30 m. Screened control cables must be
used when the cable length is longer than 20 m.
When using a shielded cable connect the shielding
to one side only, i.e. only to the device with the pro-
tective ground (keep cable short and with as little
inductance as possible!). Pay attention to sufficient
distance from power lines and motor wires to pre-
vent interferences.
Attention!
Ensure correct polarity! Never apply
line voltage to analog inputs!
• The EC motor has electronically thermal-/over-
voltage protection.
31
Mount the junction box on the long side
or outlet side of the fan acc. pictures.
Use the enclosed screws located in the junction box.
I N S T A L L A T I O N