10
Tab. №. 5
Grade of reaction to fire
Grade of reaction to fire
Examples of building materials and products included in the reaction of fire
(extract from ČSN EN 13501-1+A1)
A1
– incombustible
Granite, sandstone, concrete, bricks, ceramic tiles, mortars, fireproof plasters,...
A2
– hardly combustible
Acumin, izumin, heraklit, lignos, boards and basalt felt, fibreglass boards,...
B
– heavily combustible
Beech and oak wood, hobrex boards, plywood, werzalit, umakart, sirkolit,...
C
(D)
–
moderately
combustible
Pinewood, larch, whitewood, chipboard and cork boards, rubber flooring,...
E (F)
– lightly combustible
Asphaltboard, fibreboards, cellulose materials, polyurethane, polystyrene, polyethylene, PVC,...
Positioning of a boiler with regard to the necessary handling
space:
basic environ
ment AA5/AB5 according to ČSN 33 2000-1 ed. 2;
in front of boiler there the handling space at least 1000 mm must be
left;
minimum distance between the rear part of boiler and the wall is
400 mm;
at least from one side part, the space for accessing the rear part of
boiler (minimum 400 mm) must be kept.
Placement of fuel:
to ensure correct combustion in the boiler, it is necessary to
use dry fuel
. The manufacturer recommend that you stock fuel in
basement premises or at least under a shelter;
it is prohibited to lay fuel behind the boiler or stock it near the boiler
in a distance lower than 400 mm;
It is prohibited to store fuel in front of the boiler.
it is prohibited to lay fuel between two boilers in the boiler-room;
the manufacturer recommend that you observe distance between
the boiler and fuel at least 1000 mm or place fuel in other room
than the room where the boiler is situated.
Fig. №. 12 Positioning of boilers in a boiler room
