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1.2
INSTALLATION
1.2.1
BOILER ROOM
Check that the room has the require-
ments and features in accordance to the
rules in force. Furthermore, the room
should be aired, in order to have a regular
combustion. Therefore it is necessary to
practice some openings in the walls of the
room, which correspond to the following
requirements:
– They should have a free section of at
2
least 6 cm
for each 1,163 kW (1000
kcal/h). The minimum opening section
shouldn't be smaller than 100 cm
The section can also be calculated,
using the following ratio:
Q
S =
100
where "S" is expressed in cm
"Q" is expressed in kcal/h
– The opening should be situated on the
lower part of an outer wall, prefer-
ably on the opposite of the one for the
combustion gas discharge.
1.2.2
CONNECTION TO THE FLUE
A flue should correspond to the following
requirements:
– It should be of waterproof mate-
rial 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 ver-
tical process and the terminal part
should have a static aspirator, which
assures an efficient and constant dis-
charge of the combustion product.
– In order to avoid the wind creat-
ing a very high pressure around the
chimneypot, so that it prevails on the
ascensional force of the combustion
gas, it is necessary 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
inferior to the boiler connection; for
flues with square or rectangular sec-
tions, the internal section should be
higher than 10% compared to the boil-
er connection one.
– The net section of the flue can be
obtained from the following ratio:
P
S = K
√H
S section resulting in cm
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 dimension-
ing of the flue you should consider
the effective height of the chim-
ney in meters, measured from the
flame axis at the top, diminished
with:
– 0,50 m for each direction
changing of the connection tube
2
.
between boiler and flue;
– 1,00 m for each horizontal
development meter of the con-
nection itself.
1.2.3
CONNECTION OF THE PLANT
2
.
The connections should be easily dis-
connected 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 includ-
ed in supply.
Plant filling
Before starting with the connection of
the boiler it is advisable to let the water
circulate in the piping, in order to elimi-
nate possible foreign bodies, which could
compromise the correct operation of the
appliance.
2
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
expansion 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 instal-
lations (for example, for a static column
of 5 meters, the pre-loading pressure
of the tank and the loading pressure of
the plant should correspond 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 pro-
ceed 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 com-
bustion chamber.
– Place the front grid (10) and block it to
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
13
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