Connecting The Boiler - Sime EKO OF Mode D'emploi

tank must correspond to, and in no case
be less than, the height of the static
column of the heating system (for exam-
ple, in the case of a static column of 5
metres, tank pre-filling pressure and fil-
ling pressure must at least correspond
to a minimum of 0.5 bar).
2.5 FLUE
Combustion waste of natural draught boi-
lers: The flue for evacuation into the envi-
ronment must meet the following requi-
rements:
– be sealed against products of combu-
stion, waterproof and heat insulated;
– made of materials which can resist
normal mechanical stress, heat and
the action of products of combustion
and condensation produced by them
over time;
– vertically oriented and free of choking
throughout its length;
– adequately insulated to prevent con-
densation or the cooling of flue gases,
especially if located outside the buil-
ding or in unheated premises;
– separated from combustible or highly
flammable materials by an air space
or appropriate insulation;
– provided with a chamber at least 500
mm high for collection of solid mate-
rials and condensation underneath
the entrance of the first channel. This
chamber must be accessible through
an opening with a metal door which
does not let air in;
– circular, square or rectangular inter-
nal section; if square or rectangular,
corners must be rounded off with a
radium of no less than 20 mm;
hydraulically equivalent sections are
also permitted;
– fitted with a chimney at the top, the
outlet of which must be outside the
so-called reflux area to prevent for-
mation of counter-pressure preven-
ting the products of combustion from
being freely released into the environ-
ment.
It is thus, necessary to comply with
the minimum heights shown in fig. 4 ;
– without mechanical intake devices at
the top of the flue;
– if the flue passes through or is adja-
cent to inhabited rooms, there must
be no over-pressure.
2.5. 1 Flue size
The correct sizing of the flue is an essen-
tial condition for efficient boiler operation.
The main factors to be taken into consi-
Tetto piano
Flat roof
Tetto a 30 °
30° roof
45° roof
Tetto a 45°
≤ 1,50 m
deration for calculating the section are
the heat input of the boiler, the type of
fuel, the percentage of CO
2
flow of smoke at a nominal load,
the temperature of the smoke, the rou-
ghness of the internal wall, and the effect
of gravity on the draught pressure, which
must take into account the external tem-
> 5 m
Volume
tecnico
> 1,30 m
Colmo
≤ 1,30 m
> 1,50 m
Colmo
45°
perature and the altitude.
, the mass
2.6

CONNECTING THE BOILER

The boiler is provided with an electric
wire which, in the case of replacement,
has to be ordered from SIME.
≤ 5 m
Zona di reflusso
30°
Zona di reflusso
Fig. 4
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