12
•
Keep the unit surface free from dust.
•
Clean the filters every three months with a vacuum cleaner and replace the filters every year. This may differ per situation depending on internal and external
environmental conditions (fig.8 g-h-i-j-k).
•
Clean the heat exchanger every year with a vacuum cleaner. This may differ per situation depending on internal and external environmental conditions and
on frequency of filter cleaning. To remove the heat exchanger unlock the specific bracket by turning the yellow screw (fig.8 g-h-l-q-r).
•
Clean the fans every year with a vacuum cleaner. This may differ per situation depending on internal and external environmental conditions and on frequency
of filter cleaning. Do not move the balance clips (fig.8 g-h-l-m-n-o-p).
• Check the condensation drainage: remove the front covers and, if necessary, clean the condensation tray. Check the U-bend efficiency.
8.4 Service
WARNING
Make sure that the mains supply to the unit is disconnected before performing any installation, service, maintenance or electrical work!
WARNING
The installation and service of the unit and complete ventilation system must be performed by an authorized installer and in accordance with local rules and
regulations.
Fig. 8.l - max fastening torque 0,4Nm
Fig. 8.m
Fig. 8.k
Fig. 8.j
Fig. 8.i
Fig. 8.g
Fig. 8.h
Fig. 8.n
