Boiler Body - Sime RS Mk. II Serie Manual De Instrucciones

– sealed against products of combu-
stion, waterproof and heat insulated;
– made of materials which can resist
normal mechanical stress, heat and
Flat roof
Tetto piano
Tetto a 30 °
30° roof
45° roof
Tetto a 45°
≤ 1,50 m
TABLE 1
Thermal capacity
kW
RS 129 Mk.II 145,9
RS 151 Mk.II 170,0
RS 172 Mk.II 194,2
RS 194 Mk.II 218,2
RS 215 Mk.II 242, 1
RS 237 Mk.II 266,0
RS 258 Mk.II 290,0
RS 279 Mk.II 313,6
the action of products of combu-
stion and condensation produced by
them over time;
– ver ticall y or ient ed and fr ee of
> 5 m
Volume
tecnico
> 1,30 m
Colmo
≤ 1,30 m
> 1,50 m
Colmo
45°
Flue gas temperature
°C
154
170
173
153
160
143
148
154
≤ 5m
Zona di reflusso
30°
Zona di reflusso
Fig. 4
Flue gas rate of flow
gr/s
109,4
111,7
118,6
160,8
164,2
206,9
213,6
212,5
choking throughout its length;
– adequately insulated to prevent con-
densation or 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
materials and condensation under-
neath the entrance to 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 chimneypot at its top,
the outlet of which must be outside
of the so-called reflux area to pre-
vent formation of counter-pressure
preventing the products of combu-
stion from being freely released into
the atmosphere.
The minimum heights shown in fig. 4
must be complied with;
– without mechanical intake devices
at the top of the flue;
– if the flue passes through or adja-
cent to inhabited rooms, there must
be no over-pressure.
2.5. 1 Flue size
The correct sizing of the flue is an
essential condition for efficient boiler
operation.
The main factors to be taken into con-
sideration for calculating the section
are the heat input of the boiler, the type
of fuel, the percentage of CO
mass flow of smoke at nominal load,
the temperature of the smoke, the rou-
ghness of the internal wall, and the
effect of gravity on the draught pres-
sure, which must take into account the
external temperature and the altitude.
Table 1 shows specific parameters
pertaining to "RS Mk.II" boilers.
2.6

BOILER BODY

The cast iron body is supplied ready
assembled; if it cannot enter the boiler
room assembled, it may be supplied
dismantled.
Follow t he ins tr uctions below t o
assemble the body:
, the
2
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