W9
Smart
8
All rights to changes reserved.
2021-09-23
2.5 Electric and control cables
A 1.5 m long cable with earthed plug-in contact is fitted
to the ventilation unit for measuring the voltage. The
cable extends from the top of the unit. The mains plug
serves as the ventilation unit’s main switch and it should
be connected to an electric socket at an easily acces-
sible spot. For power required, see the Section entitled:
“Technical data”.
There is an earthing point on the top surface of the
ventilation unit body.
On top of the ventilation unit are two modular cables
for control of the unit. The maximum connected length
of the modular cable in the system is 40 metres. If you
lengthen the modular cable within some building ele-
ment (e.g. in a wall), you should lengthen the cable in a
∅
20 mm conduit, anticipating a possible later change
of cabling.
When installing the unit, make sure that you provide
adequate access to the connector of each cable (loose
ones as well), e.g. for servicing and adjusting the unit, if
and when the need arises.
In multi-storey buildings, a control panel can be used as
a so-called hand-held micro terminal in conjunction with
service and installation work.
Any accessories are either connected to the ventilation
unit’s four-way connector (2 optional functions) or to
the external connection modules (3optional functions).
Cables are routed via the lead-through openings in the
top of the ventilation unit. The connection of any acces-
sories is described in the section “External connections”.
Cables to connection modules and accessories are not
included in the supply.
Important
If any further electrical wiring is required,
only a qualified electrician shall be allowed
to carry out this work.
The electric and control cables are located
on the upper side of the ventilation unit.
Make sure that the electric cable can be con-
nected to a wall outlet without obstruction.
!
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A
B
C
A. Equipment box cover
B. Cable entry for any accessories
C. Terminal blocks for connection of accessories
