2.8.1
Separate pipe accessories
Kit code 8093000 is supplied for this pur-
pose (fig. 13).
The sectored diaphragm is to be used
according to the maximum head loss
allowed in both pipes, as given in fig. 14.
The complete range of accessories neces-
sary for satisfying all installation require-
ments is reported in fig. 15.
2.8.2
Separate-pipes roof outlet
The roof outlet terminal L. 1390 cannot be
shortened and when positioning the tile, the
minimum distance from the discharge head
terminal must not be less than 700 mm
(fig. 16).
The accessories to be used for this type of
installation and some of the connecting
systems that may be adopted are illustra-
ted in fig. 17.
There is the possibility of doubling the air-
intake and smoke-outlet pipes and then brin-
ging them back together again so as to
obtain a concentric discharge by using the
doubler fitting (7 fig. 17).
In these cases, when assembling, recover
the silicone gasket used on the terminal
adapter (5 fig. 16), which is to be replaced
by the doubler, and insert it into the seat
made in the doubler.
For this type of discharge the sum of the
maximum rectilinear development allowed
for the pipes must not exceed 7.00 mm
H
2
O (“25” vers.) and 11.00 mm H
2
O (“30”
vers.).
When calculating the lengths of pipe,
take into account the parameters given in
the
Table 2
.
80
Fig. 13
120
=
=
ø 80
16
0
KEY
1
Sponge-rubber gasket ø125/95
2
Fixing screw
3
Air-smokes flow splitting unit
with take-off point
4
Sectors of diaphragm ø 38
Fig. 14
Fig. 15
KEY
1
Air-smokes flow plitting unit
with take-off point code 8093000
2a 90° elbow MF (n° 6) code 8077410
2b Isolated 90° elbow MF code 8077408
3a Extension L. 1000 (n° 6) code 8096003
3b Isolated extension L. 1000 code 8077306
3c Extension L. 500 (n° 6) code 8096002
4
Outlet terminal code 8089501
5
Int.-est. ring kit code 8091500
6
Intake terminal code 8089500
7
45° elbow MF (n° 6) code 8077411
8
Condensation outlet L. 135 code 8092800
9
Locking junction (n° 5) code 8092700
SECTOR OF DIAPHRAGM
Sectors of diaphragm
Total head loss
to remove
mm H
2
O
Pa
1
0 ÷ 2
0 ÷ 19,6
2
2 ÷ 3
19,6 ÷ 29,4
4
3 ÷ 4
29,4 ÷ 39,2
6
4 ÷ 5
39,2 ÷ 49,0
Remove diaphragm
5 ÷ 7
49,0 ÷ 68,6
“25 BF” version
Sectors of diaphragm
Total head loss
to remove
mm H
2
O
Pa
1
0 ÷ 1
0 ÷ 9,8
2
1 ÷ 2
9,8 ÷ 19,6
3
2 ÷ 4
19,6 ÷ 39,2
4
4 ÷ 5
39,2 ÷ 49,0
5
5 ÷ 6
49,0 ÷ 58,8
6
6 ÷ 7
58,8 ÷ 68,6
Remove diaphragm
7 ÷ 8
68,6 ÷ 78,4
“25 BF” version B22 type
Sectors of diaphragm
Total head loss
to remove
mm H
2
O
Pa
1
0 ÷ 2
0 ÷ 19,6
2
2 ÷ 3
19,6 ÷ 29,4
3
3 ÷ 4
29,4 ÷ 39,2
4
4 ÷ 5
39,2 ÷ 49,0
5
5 ÷ 6
49,0 ÷ 58,8
6
6 ÷ 7
58,8 ÷ 68,6
Remove diaphragm
7 ÷ 11
68,6 ÷ 107,8
“30 BF” version
