barbas ENERGA 80-50, Installation Instructions Manual, Page: 25 / 76

25
ENERGA 80-50
3 INSTALLATION INSTRUCTIONS
3.1 REQUIREMENTS RELATING TO THE USE OF EXISTING CHIMNEYS
The adapter material for the connection with the chimney must be made of at least 2 mm
thick sheet steel and must be insulated with a heat-resistant material 3 cm in thickness.
Connect the pipes to the existing chimney using a sliding sleeve in the ceiling (niche
pipe). Check all connections for air-tightness. If the smoke outlet leads through parts
containing fl ammable material, such as walls, the adapter must be encased in at least
20 cm of a mineral substance (such as aerated concrete).
Protection of the basic surface (surface)
When fi tting a built-in fi re on a surface containing fl ammable material, the surface must
be fi tted with a covering layer of a non-fl ammable material such as concrete with a
thickness of 6 cm. The concrete plate must be of suffi cient dimensions to act as a
bearing surface. The concrete plate must then be covered with at least 3 cm of heat
insulation.
If a concrete pedestal is not immediately available, a pedestal should be built on the
creeping space. Parquet or wooden fl ooring must not extend to within the chimney
breast.
Protection of the fl oor, in front of the built-in fi re/fi replace
The fl oor, in front of the built-in fi re/fi replace must be made of non-fl ammable material.
The minimum dimensions of these non-fl ammable surfaces must be as follows.
• At the front, the dimensions are determined by the height of the heating area
measured from the bottom plate (h) plus 30 cm (h+30 cm), however no less than
50 cm.
• At the sides, the dimensions are determined by the height of the heating area
measured from the bottom plate (h) plus 20 cm (h+20 cm), however no less than
30 cm.
Construction parts containing fl ammable substances or material and fi tted
furniture within the radiation area of the fi tted fi replace
Any fl ammable materials should be kept outside an imaginary circle with an
150 cm radius centred on the built-in fi re.
Ceiling above the built-in fi re/fi replace
If the hollow space above the fi re reaches as high as the ceiling, it must be protected
if it contains any fl ammable material and/or if it is a bearing structure. Such protection
should be in the form of a 10-cm thick heat-insulating layer.