IT
ENG
39
1.2
INSTALLATION
1.2.1
BOILER ROOM
Check that the room has the requirements
and features in accordance to the rules in
force. Furthermore, the room should be
aired, in order to have a regular combus-
tion. Therefore it is necessary to practice
some openings in the walls of the room,
which correspond to the following require-
ments:
– They should have a free section of at
least 6 cm
2
for each 1,163 kW (1000
kcal/h). The minimum opening section
shouldn’t be smaller than 100 cm
2
. The
section can also be calculated, using the
following ratio:
Q
S =
100
where “S” is expressed in cm
2
.
“Q” is expressed in kcal/h
– The opening should be situated on the
lower part of an outer wall, preferably
on the opposite of the one for the com-
bustion gas discharge.
1.2.2
CONNECTION TO THE FLUE
A flue should correspond to the following
requirements:
– It should be of waterproof material and
resistant to temperature of smokes and
related condensations.
– It should be of a sufficient mechanical
resistance and a weak thermal conduc-
tivity.
– It should be perfectly hermetic in order
to avoid cooling of the flue.
– It should have the most possible vertical
process and the terminal part should
have a static aspirator, which assures
an efficient and constant discharge of
the combustion product.
– In order to avoid the wind creating a
very high pressure around the chimney-
pot, so that it prevails on the ascension-
al force of the combustion gas, it is nec-
essary that the discharge orifice hangs
over at least 0,4 meters of whatever
structure adjacent the chimney itself
(including the roof ridge) of at least 8
meters.
– The flue shouldn’t have a diameter infe-
rior to the boiler connection; for flues
with square or rectangular sections, the
internal section should be higher than
10% compared to the boiler connection
one.
– The net section of the flue can be
obtained from the following ratio:
P
S = K
√H
S section resulting in cm
2
K reduction coefficient:
– 0,045 for wood
– 0,030 for carbon
P boiler capacity in kcal/h
H height of the chimney in meters
measured from the flame axis at
the exhaust of the chimney in the
atmosphere. For the dimensioning
of the flue you should consider the
effective height of the chimney in
meters, measured from the flame
axis at the top, diminished with:
– 0,50 m for each direction chang-
ing of the connection tube
between boiler and flue;
– 1,00 m for each horizontal devel-
opment meter of the connection
itself.
1.2.3
CONNECTION OF THE PLANT
The connections should be easily discon-
nected by means of pipelines with revolving
joints. It is always advisable to assemble
suitable interception shutters on the piping
of the heating installation.
CAUTION: It is obligatory to assemble
safety valves on the system not included
in supply.
Plant filling
Before starting with the connection of the
boiler it is advisable to let the water cir-
culate in the piping, in order to elimi-
nate possible foreign bodies, which could
compromise the correct operation of the
appliance.
The filling should be carried out slowly
in order to make the air bubbles go out
through the proper outlets, placed on the
heating installation.
The cold loading pressure of the plant and
the pre-blowing pressure of the expan-
sion tank, should correspond or however
shouldn’t be inferior to the height of the
static column of the plant in case of closed
circuit heating installations (for exam-
ple, for a static column of 5 meters, the
pre-loading pressure of the tank and the
loading pressure of the plant should cor-
respond at least to a minimum value of
0,5 bar).
Features of the feed water
THE TREATMENT OF THE WATER USED
FOR THE HEATING INSTALLATION
IS ABSOLUTELY NECESSARY IN THE
FOLLOWING CASES:
– Very vast plants (with high water con-
tents).
– Frequent replenishment water inlets in
the plant.
– If the partial or total emptying of the
plant should be necessary.
1.2.4
BRAZIER GRID ASSEMBLY
(OPTIONAL)
In order to carry out the assembly proceed
in the following way (fig. 3):
– Punch the card of the outer part,
between the front head and the inter-
mediate element, using a bit of 10 ø as
indicated in the detail (B).
– Place the back grid (12) in the combus-
tion chamber.
– Place the front grid (10) and block it to
the hub (9) with the screws (8) and the
nuts (7); block the front grid from the
LEGEND
1 Screw TE M8 x 10
2 Grower washer
3 Grid lever
4 Ring for lever
5 Screw TE M8 x 35
6 Tie rod
7 Nut M 10
8 Screw TE M10 x 50
9 Hub
10 Front grid
11 Intermediate grid
12 Rear grid
Fig. 3
Содержание 8058540
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