Boiler Body Assembly - Sime 1R OF Instrucciones De Instalación Y Mantenimiento

lience and of low heat conductivi-
ty;
– be perfectly sealed to prevent
cooling of the flue itself;
– be as vertical as possible; the ter-
minal section of the flue must be
fitted with a static exhaust device
that ensures constant and effi-
cient extraction of products gene-
rated by combustion;
– to prevent the wind from creating
pressure zones around the chim-
ney top greater than the uplift
force of combustion gases, the
exhaust outlet should be at least
0.4 m higher than structures adja-
cent to the stack (including the
roof top) within 8 m;
– have a diameter that is not inferior
to that of the boiler union: squa-
re or rectangular-section flues
should have an internal section
10% greater than that of the boiler
union;
– the useful section of the flue must
conform to the following formula:
P
S = K
√H
S resulting section in cm
K reduction coefficient for liquid
fuels:
– 0.045 for firewood
– 0.030 for coal
– 0.024 for light oil
– 0.016 for gas
P boiler input in kcal/h
H height of flue in metres, mea-
sured from the flame axis to
the top of the flue reduced by:
– 0.50 m for each change of
direction of the connection
union between boiler and
flue;
– 1.00 m for each metre of
union itself.
2.5

BOILER BODY ASSEMBLY

The boilers "2R OF S" are supplied
with the dismantled cast iron body.
For assembly, proceed as follows:
– remove the tie-rods from the boi-
ler body and also the two upper
front and lower panels;
– prepare the sections, cleaning the
seats of the tapered nipples with
solvent;
– insert the bead of putty (fig. 5)
in the groove provided for fume
tightness, pressing lightly;
– prepare one of the two interme-
diate sections. After cleaning and
lubricating them with boiled lin-
44
2
seed oil, insert the tapered nip-
ples (fig. 6);
– prepare the head, proceeding as
above, and bring it up to the inter-
mediate section. Add only one
section at a time;
– assemble the sections, using the
tools provided consisting of a pair
of staybolts for assembly with the
corresponding accessories (code
6050900 - fig. 7), exerting pressure
simultaneously on the top hub and
on the bottom hub. If, during this
operation, the sections were to slot
together in such a way as not to be
even and parallel, slide a chisel in
the tighter side and, by applying
a little force, bring the two pieces
together so that they are parallel.
The sections can be considered
properly joined together when
their outer edges come into con-
tact;
– insert the bead of putty in the
groove of the section that has just
been assembled, and then pro-
Fig. 5
Fig. 6
Fig. 6/a