9
Chart Nr. 4
Grade of reaction to fire
Grade of reaction to fire
Examples of building materials and products included in the reaction to fire
(Extract from EN 13 501-1 + A1)
A1 – incombustible
Granite, sandstone, concrete, bricks, ceramic tiles, mortars, fireproof plasters, …
A2 – combustible with difficulty acumin, izumin, heraklit, lignos, boards and basalt felt, fibreglass boards,...
B – hardly combustible
Beech and oak wood, hobrex boards, plywood, werzalit, umakart, sirkolit,...
C (D) – medium combustible
Pinewood, larch, whitewood, chipboard and cork boards, rubber flooring,...
E (F) – easily combustible
Asphaltboard, fibreboards, cellulose materials, polyurethane, polystyrene,
polyethylene, PVC,…
Section number
3
4
5
6
7
8
9
10
A [mm]
420
515
610
705
800
895
970
1085
Fig. Nr. 4
Bedding dimensions
The boiler placing with respect to the necessary
handling space:
-
basic surroundings of AA5/AB5 according to
Č
SN 33 2000-1 ed. 2
-
handling space of minimum 1000 mm in front of the
boiler must be maintained
-
a minimum distance of 400 mm between the back
part of the boiler and the wall
-
to maintain space for access to the back part of the
boiler of minimum 400 mm at least from one lateral
face
-
a minimum distance of 100 mm from the side wall
Fuel placing:
-
it is disallowed to store fuel behind the boiler or to
unload it beside the boiler in the distance smaller
than 400 mm
-
it is disallowed to store fuel between two boilers in a
boiler room
-
the producer recommends to keep distance of
minimum 1000 mm between the boiler and fuel or to
place the fuel to a another room than that where the
boiler is installed
Fig. No. 5
Boiler placing in a boiler room
