Sime Format 25, Инструкции по установке

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supply of gas sufficient to cover the maxi-
mum demand, limiting pressure loss
between the gas meter and any apparatus
being used to not greater than:
– 1.0 mbar for family II gases (natural gas);
– 2.0 mbar for family III gases (butane or
propane).
A sticker inside the module includes identifi-
cation and gas type data specific to the
module.
2.3.1 Filter on the gas pipe
The gas valve is supplied ex factory with an
inlet filter, which, however, is not adequate to
entrap all the impurities in the gas or in gas
main pipes.
To prevent malfunctioning of the valve, or in
certain cases even to cut out the safety devi-
ce with which the valve is equipped, install an
adequate filter on the gas pipe.
2.5 SYSTEM FILLING
The filling of the boiler and of the system is
carried out by pressing the filling cock loca-
ted on the bottom of the boiler (fig. 7).
The filling pressure of the system cold must
be 1 bar . Once the filling has been comple-
ted, close the filling cock.
2.6 FLOW REGULATOR
(fig. 7/a)
At the inlet of the hot water a flow regulator
can be installed, (yellow) for the “25/60”
version and (brown) for the “30/60” ver-
sion; the regulator is supplied in the kit of
the connecting taps code 8091805.
2.7 FLUE
The flue for the atmospherical expulsion of
the combustion products from natural
draught appliances must meet the following
requirements:
– Be gas-tight to the combustion products,
waterproof and thermally insulated.
– Be built of materials suitable for keep
resisting to normal mechanical stresses,
heat, and the action of combustion pro-
ducts and their possible condensates.
– Follow a vertical path and not present
any t hr o ttling t hr oughout its entir e
length.
– Be adequately insulated to prevent phe-
nomena of condensation or smokes coo-
ling, in particular if located outside the
building or in unheated ambiences.
– Be set at an adequate distance from
combustible or easily inflammable mate-
rial by means of an air gap or suitable
insulating material.
– Have beneath the mouth of the first
smoke duct a chamber for collecting
solid material and any condensate; the
height of the chamber must be at least
500 mm.
Access to the chamber must be guaran-
teed by means of an opening provided
with an air-tight metal door.
– Have a circular, square, or rectangular
internal cross section; in the case of
square or rectangular sections, the cor-
ners must be rounded off with a radius
o f n o t l e s s t h a n 2 0 m m . H o w e v e r,
hydraulically equivalent cross sections
are allowed.
– Be equipped with a chimney-pot at the
top, which must be outside the so-called
back-flow zone, so as to prevent the for-
mation of back-flow, which prevents free
discharge of the products of combustion
into the atmosphere.
– Be devoid of mechanical means of suc-
tion located at the top of the pipe.
– No overpressure should be present in a
chimney that passes within or close up
to inhabited rooms.
2.7.1 Connecting up flue
Fig. 8 refers to the connection of the boiler
“25/60 OF” to the flue or chimney throu-
gh smoke ducts. When making the con-
nection, in addition to respecting the
dimensions given, you are recommended
to use gas-tight materials capable of resi-
sting over time mechanical stresses and
the smokes heat.
At any point along the smoke duct, the tem-
perature of the combustion products must
be higher than the dew point. More than a
total of three changes of direction must not
be made, including the inlet connection to
the chimney/flue. For any changes of direc-
tion use only curved pipe lengths.
Fig. 8/a shows some applications of drau-
ght terminals that ensure proper expulsion
of the combustion products, in case of
discharge through the wall.
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Fig. 8
Fig. 7
Fig. 7/a
CLOSE
Fig. 8/a