Electric And Control Cables; Bypass For Kitchen - Swegon CASA W3 Smart Installation, Commissioning And Maintenance Instruction

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 the
modular cable is lengthened within some building ele-
ment (such as in a wall), the cable should be lengthened
in a ∅ 20 mm dia. 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 apartment buildings, a control panel can be used as a
so-called hand-held 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 (3 optional 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 connected to a wall
outlet without obstruction.
We reserve the right to alter specifications.

2.6 Bypass for kitchen

The cooker hood is usually connected to the ordinary
extract air duct. However the cooker hood can be
connected to the ventilation unit's separate extract air
connection, in order to meet national regulations or for
achieving a more effective than normal extract air flow.
The extract air from a compatible Swegon CASA cooker
hood can be conveyed via a duct to an extra duct connec-
tion on the top of the ventilation unit. The duct between
the cooker hood and the ventilation unit must be installed
in such a way that makes it possible to clean it.
The ventilation unit can be controlled from the cooker
hood control panel.
!
The bypass for a kitchen is intended for use
when the air flows from the cooker hood/
kitchen are boosted. The kitchen's general
ventilation must take place via the extract
air duct. If the general ventilation takes
place continuously via the cooker hood, the
supply air and extract air flows through the
heat exchanger will be out of balance, and
this will lower the efficiency and impair
the ventilation unit's anti-freeze protection
functions during the winter.
!
Important
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