Sime Format.ZIP Serie Manual De Instrucciones Para El Instalador página 78

the requirements of the current stan-
dards, 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 buil-
ding or in cold indoor environments,
insulation is necessary to prevent bur-
ner failure in starting.
In such cases, provide for a condensa-
te-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 insula-
tor 30 mm thick, with 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 (excluding the doublers) and
must not be greater than 7.50 mm H
vers. "25 BF" e 11 mm H
BF".
For head losses in the fittings, refer to
Table 1.
2
3
6
Model "30 BF"
N° segments
to remove mm H
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
without diaphragm
76
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. 1 240
Condensation collection T
Example of allowable installation calculation in that the sum of the head losses of the single fit-
tings is less than 7.50 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. 8
from diaphragm in the intake pipe.
O
2
O VERS. "30
2
2.8. 1
The separate flue kit code 8089904 is
1
4
Total load loss
O Pa
2
0 ÷ 1 0 ÷ 9,8
1 ÷ 2 9,8 ÷ 19,6
2 ÷ 3 19,6 ÷ 29,4
3 ÷ 4 29,4 ÷ 39,2
4 ÷ 5 39,2 ÷ 49,0
5 ÷ 6 49,0 ÷ 58,8
6 ÷ 7 58,8 ÷ 68,6
7 ÷ 8 68,6 ÷ 78,4
8 ÷ 9 78,4 ÷ 88,2
9 ÷ 10 88,2 ÷ 98,0
10 ÷ 11 98,0 ÷ 107,8
Intake
0,30
0,20
0,20
0,30
–
0, 1 0
0,50
–
–
O
2
Separate
flue kit (fig. 8)
KEY
1 ø125/95 sponge seal
2 Fixing screw
3 Flue outlet flange
4 Inlet air diaphragm
6 Manifold with intakes
25 BF 30 BF
K mm 180 205
Load loss (mm H O)
2
25 BF
Outlet Roof out. Intake Release
0,40 – 0,30
0,30 – 0,20
0,30 – 0,20
0,20 – 0,30
0,30 – –
– – 0, 1 0
1,60 – 0,50
– 0,50 –
1,00 – –
Intake Outlet
1.40 –
– 2. 1 0
0.60 –
– 0.80
0. 1 0 0.30
2. 1 0 + 3.20 = 5.3 mm H 2 O
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.
K
100
Model "25 BF"
N° segments Total load loss
to remove mm H
n° 1 0 ÷ 1
n°
1 e 2 1 ÷ 2
da n° 1 a 4 2 ÷ 3
da n° 1 a 5 3 ÷ 4
da n° 1 a 7 4 ÷ 5
da n° 1 a 8 5 ÷ 6
da n° 1 a 10 6 ÷ 7
without diaphragm 7 ÷ 7,5
30 BF
Outlet Roof out.Intake
0,50 –
0,40 –
0,40 –
0,30 –
0,40 –
– –
1,80 –
– 0,60
1, 1 0 –
Fig. 8
O Pa
2
0 ÷ 9,8
9,8 ÷ 19,6
19,6 ÷ 29,4
29,4 ÷ 39,2
39,2 ÷ 49,0
49,0 ÷ 58,8
58,8 ÷ 68,6
68,6 ÷ 73,5
Fig. 8/a