3 FOR THE INSTALLER
3.1 GENERAL RULES
To ensure proper operation of the stove, a few
basic rules must be observed concerning the
external air intake, the flue pipe and installation
(ref. standard UNI 10683. The external air intake,
which is required to regenerate the air used by
the stove to create combustion, is indispensable,
especially if you have door and window fixtures
with dual panes and seals. Therefore, make a
hole with a diameter of about 10 cm in an outer
wall (also refer to the technical characteristics
at the end of this manual), preferably behind or
to the side of the unit, and use micro-perforated
mesh as an anti-insect grille. If there is more than
one fireplace in the same room, we suggest you
increase the cross¬section of the external air
intake for each stove to prevent air depression
causing smoke.
The size of the flue must comply with technical
specifications and applicable standards. Use
of insulated flues in refractory material or
stainless steel
with a circular cross-section
and smooth internal walls. Flue pipes with a
square or circular cross section are preferable
to those with a rectangular cross section. The
flue cross section should be kept constant for
all its height. A minimum height of 3.5 metres
is recommended; any height of less than 3
metres should be avoided at all costs. Flue
features should comply with standards UNI-CTI
9615 UNI 9731 and 10683. Deteriorating flues
constructed out of unsuitable materials such as
asbestos cement, galvanised steel, vibration-
compressed cement elements with a rough
or porous internal surface are not compliant
SLOPE OF
DISTANCE BETWEEN RIDGE CAP
ROOF
15°
less than 1.85 m - greater than 1.85 m
30°
less than 1.50 m - greater than 1.50 m
45°
less than 1.30 m - greater than 1.30 m
60°
less than 1.20 m - greater than 1.20 m
AND CHIMNEY (m)
with standards and can jeopardise the correct
operation of the stove. We recommend rectifying
them with stainless steel pipes of an appropriate
diameter and thickness, insulating the remaining
space between the circular pipe and the existing
flue with aggregates. For best stove operation,
the flue pipe must have a minimum draught of
12 Pascal (while the stove is on).
The chimney top must be of a windproof type
with the section of the outlet at least twice that of
the flue pipe. To prevent draught problems, each
stove must have its own independent flue pipe.
If there is more than one flue on the roof, the
others should be situated at a distance of at
least 2 metres and the stove's chimney top
should be at least 40/50 cm ABOVE the others.
If the chimney tops are near each other and at
the same height, install some dividing panels.
(ref. standard UNI 10683. If the flue pipe that
you want to use for installation was previously
connected to other stoves or fireplaces, you will
need to clean it carefully to prevent material that
has not burned and has deposited on the inside
of the flue pipe from catching fire.
It is advisable to clean the flue pipe on a yearly
basis.
Perfect draught is provided mostly by a flue
pipe that is free of obstacles such as narrows
or corners. Any movements of axes must
have a path inclined with a maximum angle
of 45° from the vertical, and only 30° is even
more preferable. Further to standard UNI
10683 (windproof chimney tops, distances and
positioning) the distances shown in the following
table must be complied with:
Minimum height of the chimney measured at the
mouth (m)
0.50 m above the ridge cap - 1.00 metres from roof
0.50 m above the ridge cap - 1.30 metres from roof
0.50 m above the ridge cap - 2.00 metres from roof
0.50 m above the ridge cap - 2.60 metres from roof
17