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FIREPLACES | STOVES | BIO and GARDEN HEATERS | ACCESORRIES
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Figure 7. Simplified diagram of the insert construction with an exemplary location of inspection windows.
6.5.2.
General recommendations concerning the housing:
•
the fireplace insert can be placed anywhere, as long as it is positioned at an appropriate distance from the
insulation and the housing;
•
the supporting structure and the housing of the fireplace insert must be made from non-flammable heat-
resistant materials
;
•
the housing should be made from non-flammable materials;
•
distance between the insulation materials and the insert should be at least 10 cm;
•
there should be a warm air outlet vent in the housing, positioned 80cm from the ceiling (in the case of
flammable materials);
•
during regular use, the housing of the fireplace extends (due to the heat), therefore there should be tiny
gaps between stone, marble or ceramic elements;
•
preferable insulation material should be resistant to temperatures over 500⁰C;
•
preferably, no insulation should be provided for the flue (it will ensure more effective dissipation of heat
into the room);
•
it is recommended to create an isolated decompression chamber with separate ventilation vents. Thanks to
this, the ceiling is better protected against discoloration and cracking;
•
the housing cannot lean on the fireplace;
•
the thickness of the insulation depends on the thermal conductivity coefficient λ (th
e ability of a material to
conduct heat) and heat resistance of a given material;
•
in the housing of the insert, there should be a cold air inlet vent (at the bottom of the encasing) and a
warm air outlet vent;
The λ coefficient is specified by the manufac
turer of the insulation, e.g. for mineral wool it is 0.035-0.045.
The lower the λ coefficient, the better the insulation (“thermal insulation in the room”)
