Boiler Body Assembly - Sime 1R OF Serie Manual De Uso

nal section of the flue must be fitted
with a static exhaust device that
ensures cons t ant and ef ficient
extraction of products generated by
combustion;
– to prevent the wind from creating
pressure zones around the chimney
top greater than the uplift force of
combustion gases, the exhaust
outlet should be at least 0.4 m
higher than structures adjacent to
the stack (including the roof top)
within 8 m;
– have a diameter that is not inferior
to that of the boiler union: square or
rectangular-section flues should
have an internal section 10% grea-
ter 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, measu-
red 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 boiler
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 intermediate
sections. After cleaning and lubrica-
ting them with boiled linseed oil,
insert the tapered nipples (fig. 6);
– prepare the head, proceeding as
above, and bring it up to the inter-
mediate section. Add only one sec-
tion at a time;
– assemble the sections, using the
tools provided consisting of a pair of
44
2
staybolts for assembly with the cor-
r esponding accessor ies (code
6050900 - fig. 7), exerting pressure
simultaneously on the top hub and
on the bottom hub. If, during this ope-
ration, 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 pro-
perly joined together when their
outer edges come into contact;
Fig. 5
Fig. 6
Fig. 6/a