71
IT
ES
GB
PT
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 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 le-
ast 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:
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 combu-
stion 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 resi-
stance and a weak thermal conductivity.
– It should be perfectly hermetic in order to
avoid cooling of the flue.
– It should have the most possible verti-
cal 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 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 adja-
cent 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 inter-
nal section should be higher than 10%
compared to the boiler connection one.
– The net section of the flue can be obtai-
ned from the following ratio:
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 atmo-
sphere. For the dimensioning of the
flue you should consider the effecti-
ve height of the chimney in meters,
measured from the flame axis at the
top, diminished with:
– 0,50 m for each direction changing
of the connection tube between
boiler and flue;
– 1,00 m for each horizontal deve-
lopment meter of the connection
itself.
1.2.3
CONNECTION OF THE PLANT
The connections should be easily discon-
nected by means of pipelines with revol-
ving joints. It is always advisable to assem-
ble suitable interception shutters on the
piping of the heating installation.
CAUTION: It is obligatory to assemble safety
valves on the system not included in sup-
ply.
Plant filling
Before starting with the connection of the
boiler it is advisable to let the water circula-
te in the piping, in order to eliminate possi-
ble foreign bodies, which could compromi-
se 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 example,
for a static column of 5 meters, the pre-loa-
ding 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 proceed
in the following way (fig. 3):
– Punch the card of the outer part, betwe-
en the front head and the intermediate
element, using a bit of 10 ø as indicated
in the detail (B).
– Place the back grid (12) in the combu-
stion 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
right side of the boiler body with the
screws (5).
– Hook the tie rod (6) to the seats extracted
from the front and rear grid.
– Place the intermediate grids (11).
– Introduce the ring (4) and the lever (3) on
the hub (9), fixing then everything with
the washer (2) and the screw (1).
Q
S =
100
P
S = K
√H
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
