Sime FORMAT.zip 4 25 OF Manual Del Instalacion página 75

2.8 INSTALLATION SEPARATE
PIPES ("25 BF" version)
When installing the pipes, follow closely the
requirements of the current standards, as
well as the following practical pointers:
– With direct intake from outside, when
the pipe is longer than 1 m, you are
recommended to insulate the piping so
as to prevent formation of dew on the
outside of the piping during particularly
hard periods of the year.
– With the outlet pipe outside the building
or in cold indoor environments, insulation
is necessary to prevent burner failure in
starting.
In such cases, provide for a condensate-
collector system on the piping.
– If a segment of the flue passes through a
flammable wall, this segment must be
insulated with a glass wool pipe insulator
30 mm t hick, wit h a density of 50
kg/m 3 .
The maximum overall length of the intake
and exhaust ducts depends on the head
losses of the single fittings installed and
must not be greater than 7.60 mm H
For head losses in the fittings, refer to Table
1 and example fig. 6/a.
2
3
N° segments
to remove
none
n° 1
n° 1 e 2
da n° 1 a 3
da n° 1 a 4
da n° 1 a 5
da n° 1 a 6
da n° 1 a 7
da n° 1 a 8
da n° 1 a 9
da n° 1 a 10
without diaphragm
TABLE 1
Accessories ø 80
90° curve MF
45° curve MF
Extension L. 1000 (horizontal)
Extension L. 1000 (vertical)
Outlet terminal
Intake terminal
Manifold
Roof outlet terminal L. 1 390
Condensation collection T
Example of allowable installation calculation in that the sum of the head losses of the single
fittings is less than 7.60 mm H
7 meter horizontal pipe ø 80 x 0.20
7 meter vertical pipe ø 80 x 0.30
n° 2 90° elbows ø 80 x 0.30
n° 2 90° elbows ø 80 x 0.40
n° 1 terminal ø 80
Total head loss
With this total head loss, remove the segments from n. 1 to n. 7 from diaphragm in the intake
pipe.
O.
2.8. 1 Separate
2
flue kit (fig. 8)
The separate flue kit code 8089904 is
1
4
KEY
1 ø125/95 sponge seal
2 Fixing screw
3 Flue outlet flange
4 Inlet air diaphragm
Total load loss mm H
"25 BF"
0 ÷ 0.8
0.8 ÷ 1.6
1.6 ÷ 2.4
2.4 ÷ 3. 1
3. 1 ÷ 3.8
3.8 ÷ 4.5
4.5 ÷ 5.2
5.2 ÷ 5.8
5.8 ÷ 6.4
6.4 ÷ 7.0
-
7.0 ÷ 7.6
Intake
0,30
0,20
0,20
0,30
–
0, 1 0
0,20
–
–
O:
2
Intake
1.40
0.60
0. 1 0
2. 1 0
supplied with an intake diaphragm which
must be used as shown in fig. 8/a, depen-
ding on the maximum load loss permitted
in both flues.
O
2
Load loss (mm H O)
2
"25 BF"
Outlet Roof out. Intake
0,40 –
0,30 –
0,30 –
0,20 –
0,30 –
– –
– –
– 0,50
1,00 –
Outlet
–
– 2. 1 0
–
– 0.80
0.30
+ 3.20 = 5.3 mm H O
2
Fig. 6/a
180
100
Fig. 8
Fig. 8/a
IT
ES
PT
GB
GR
RO
RUS
73