barbas ENERGA 80-50, Installation Instructions Manual

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46
ENERGA 80-50
4.2 BUILDING-IN A FIRE IN GERMANY AND SWITZERLAND
Building-in the fi re against a wall in a casing/fi replace/chimney breast
False wall
is
mandatory
• A false wall is mandatory in the case of protective walls/walls with fl ammable
material. The recommended thickness of the false wall is at least 10 cm.
• The false wall must be of mineral construction, e.g. aerated concrete.
• The false wall must in turn be covered with minimal 10 cm of insulation (see table 1).
• The false wall must at least be built up to the place at which the chimney leaves the
convection area.
False wall not mandatory
• If the existing wall is at least 10 cm thick.
• If the existing wall does not contain fl ammable material.
• If the existing wall is not a bearing concrete or reinforced concrete wall and is at least
10 cm thick. In that case, a minimal 10 cm thick layer of insulation must be used and
the insulation must be closed tightly, and overlapping at the sides.