Electric And Control Cables - Swegon CASA R3 Smart Installation, Commissioning And Maintenance Instructions

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The supply air duct should be fitted with acoustic insula-
tion along the stretch between the unit duct outlet and
the sound attenuator, so that fan sound will not be
propagated out into the room.
In general, ventilation ducts should be insulated in the
following manner:
• Insulate outdoor air ducts run through warm spaces.
• Exhaust air ducts should always be insulated in ac-
cordance with national regulations. See separate pro-
ject planning instructions (for example Fire resistance
classification requirements).
• Insulate supply air ducts in cold spaces.
• Insulate extract air ducts in cold spaces.
• If the air inside the duct is colder than in the sur-
roundings; the insulation should be protected by a
vapour barrier.
!
Important
Even small gaps in the insulation impair the
sound attenuation and bring about a risk of
condensation and consequential damages.
!
Important
Before commissioning the ventilation sys-
tem, check that the ventilation unit, filters,
condensation drain and ducts are clean and
that there are no loose objects inside them.
The ventilation ducts should be cleaned
regularly and always when the home is
renovated.
!
Important
It is absolutely forbidden to operate the
ventilation system during the construction
period or if dust-raising work is carried out.
Before installing the unit, the ducts should
be blanked off with covers to prevent the
entry of impurities.

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 a modular cable for control on top of the
ventilation unit. There is a modular cable for the cooker
hood located under the cover plate at the bottom of the
ventilation unit.
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The maximum length of the modular cable in the system
is 40 metres. If the modular cable is lengthened within
some building element (such as a wall), the cable should
be lengthened in a ∅ 20 mm dia. tube as a precaution
in case the need should arise to replace it in the future.
!
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.
!
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.
The connection of possible accessories is described in
the wiring diagram in the Section entitled: "Technical
data". The cables for accessories are not included in the
supply.
!
Important
Swegon reserves the right to alter specifications.
R3.051016
!

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