8
3.3 Automatic Control
The control pack is included in the unit package. The
low-voltage cable must be laid between the unit and the
switch unit. See separate manual for automatic control
included in pack.
3.4 External components
See wiring diagram enclosed with unit.
3 Connection of unit and electrical
work
3.1 Connection of unit
• Ensure that the ducts arrive at the right muff coupling. See
the marking on the unit (top/bottom and behind door).
The symbols are explained on page 3 and the location is
shown in the dimensioned drawing in Chap. 5.
• Pull the duct insulation well up to the unit.
• To avoid condensation, it is very important for the outdoor
air duct and the exhaust air duct to have insulation and a
plastic muff pulled right down to the unit.
NB! Use tape to seal the plastic sleeve to the unit
but do not compress the insulation.
• Lay the outdoor air duct with a slight incline towards the
outdoor air cap so that any water that enters drains out
again.
• If there is a short distance between the unit and the
exhaust point, sound insulation must be installed to ensure
that the requirements for the outdoor sound level are met.
• Ducts must have good sound insulation, particularly above
the unit.
3.2 Electrical work
The unit is suppied with a 1.8 m cable with plug.
The cable leaves the top of the unit and is connected to a
230V 50 Hz single-phase earthed power point located within
a convenient distance. The plug must be used as a service
switch.
NB! Make sure the power point for the unit is not boxed in.
See Chap. 13 for fuse sizes.
A low-voltage cable (with connector) leaves the unit for
use on the control panel. It is important to retain easy
access to this plug - in case of any fault or when replac-
ing the unit.
Installation instructions K2R
The unit must be installed with a separate earth
leakage circuit breaker.
The low-voltage cable must be laid minimum
30 cm from the 230 V cable and in the case of
chased mounting be laid in 20 mm electrical
piping.
All electrical work must be carried out by au-
thorised personnel. 1
2
Service
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