Air Inlet - Hegrom STILKAMIN S-460 Instrucciones Para Instalación, Uso Y Mantenimiento

5 - FLUE
The existing duct or the one to be built must comply
with the existing regulations.
Existing duct
• Make sure that it is well sealed.
• Make sure that it is not connected to another
fireplace.
• Make sure that the chimneypot is in good
conditions and that the height and diameter
are correct.
Building of a metal duct
The material to be used is AISI 316 double-walled
stainless steel, with a 4/10 minimum thickness (the
best value would be 1 mm), installed according to
the rules of the manufacturer.
Building a refractory material duct
This duct is built with three concentric layers, each
one with a specific function:
• The first layer of refractory material guarantees
the waterproof nature of the product, air-
tightness and resistance to corrosion and heat.
• The second intermediate layer, apart from the
insulating function, provides for longitudinal
and transverse expansion of the refractory
material with respect to the external wall.
• The third external layer performs insulating,
protecting, guiding and containing functions
typical of refractory material.
This kind of flue is the optimal solution in terms of
functionality and endurance in time.
Chimney
The chimney will be rainproof.
The thermal resistance of chimney walls should be
at least 0.43 m2kw.
The chimney must extend 1.20 m over the ridge of
the roof.
Thermal insulation of the duct
The passage of the duct through a wall of an
inhabited room shall be isolated with fireproof
material in order to avoid fire; the minimum
distance between the duct and all combustible
elements (beams, wooden floors, etc.) will exceed
16 cm.

6 - AIR INLET

• It should be placed directly outside or inside a
ventilated room, with the right dimension and
with the protection of a grid.
• Insulation of the breast wall: insulation is
fundamental for light structures, and it is
also recommended to avoid loss of heat, thus
achieving better thermal efficiency.
• Lifting of the compact fireplace: it is possible up
to the height indicated in the design using, for
example, Gasbeton ® blocks with the suitable
shape.
• Place the marble/stone covering: with the
right shape according to the design. Provide a
stable support at least on three points or, if it
is overhanging, provide suitable hidden metal
supports. The width of the marble/stone top in
front of the fireplace should be more than 30
cm if the floor is made of wood, fitted carpet or
any other inflammable material.
• If there is a wooden lintel, it should be
protected.
• It is compulsory to build the hood with insulating
and fireproof materials. The hood is generally
made of plasterboard; to avoid overheating it
is necessary to create a ventilation system in
the hood through grids, placed in the correct
places, to allow the air to circulate; grids,
however, have to be placed at the highest point,
but never less than 30 cm from the ceiling with
grids with a surface of 600 cm2.
Optimum usage
Do not force the fireplace when used for the first
times; during the first few days use the equipment
at 50% in order for its components to expand
and settle evenly. Always use dry firewood with
a maximum humidity of 15%; always charge ¾
big pieces separated in time, avoid continuously
opening the door to add small pieces of wood
because this increases firewood consumption;
control combustion by means of the primary air
inlet.
Notes on fuels
Allowed: firewood, lignite, compressed logs.
Do not burn: cardboard, wooden pallets, plastic,
alcohol, gas oil or other flammable liquids.
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