Bosch DBB66AF50 User Manual page 21

pressure falls below atmospheric pressure. Toxic gases from
the flue or the extraction shaft are sucked backed into the liv-
ing space.
▶ Always ensure adequate fresh air in the room if the appli-
ance is being operated in exhaust air mode at the same
time as room air-dependent heat-producing appliance is be-
ing operated.
▶ It is only possible to safely operate the appliance if the pres-
sure in the room in which the heating appliance is installed
does not drop more than 4 Pa (0.04 mbar) below atmo-
spheric pressure. This can be achieved whenever the air
needed for combustion is able to enter through openings
that cannot be sealed, for example in doors, windows, in-
coming/exhaust air wall boxes or by other technical means.
An incoming/exhaust air wall box alone will not ensure com-
pliance with the limit.
▶ In any case, consult your responsible chimney sweep. He is
able to assess the house's entire ventilation setup and will
suggest the suitable ventilation measures to you.
▶ Unrestricted operation is possible if the appliance is oper-
ated exclusively in air recirculation mode.
WARNING ‒ Risk of fire!
¡ Fatty deposits in the grease filters may catch fire.
▶ Clean the grease filters roughly every 2 months.
▶ Never work with naked flames close to the appliance (e.g.
flambéing).
Kundendienst en
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