R2.060219
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It is important to the ensure the tightness of the vapour
barrier at the penetration collars. We recommend the
use of a mounting frame with vapour barrier designed
for the ventilation unit (accessory, PR085YP) for sealing
the vapour barrier.
2.3.1 Commissioning the bypass for the kitchen
The ventilation unit has extra duct connections for
extract air from the cooker hood on its top and
bottom sides. The extract air from the cooker hood
flows directly out through the unit’s extract air fan and
does not pass the heat exchanger. For this reason, the
kitchen's general ventilation must not take place via the
cooker hood. On delivery, both of the duct outlets that
bypass the heat exchanger are fitted with covers.
If the duct connection designed for bypass from the
kitchen is used, the duct between the cooker hood and
the unit must be installed in such a way that makes it
possible to clean it.
Important
The kitchen bypass 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.
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Dismantle the cover panel on the top of the
ventilation unit
How to open the ventilation unit and remove the guard
plates are described in the section entitled: ”Service”.
• Open the ventilation unit’s inspection door and
remove the guard plates in front of the heat
exchanger.
• Remove the screws of the guard plate that covers the
duct connection.
• Pull out the cover together with its insulation.
• Secure the guard plates for the extract air fan and
the heat exchanger with screws at their positions
and close the inspection door. The duct connection
spigots are now ready for connection to ducting.
Dismantle the cover panel on the bottom of the
ventilation unit
How to open the ventilation unit as well as how to
remove the guard plates and heat exchanger are
described in the Section entitled: ”Service”.
• Open the ventilation unit’s inspection door and
remove the heat exchanger guard plates. Withdraw
the heat exchanger from the unit.
• Remove the screws of the guard plate that covers the
duct connection.
• Pull out the cover together with its insulation.
• Push the heat exchanger back into the unit, secure
the guard plate with screws at its position and close
the inspection door.
