74
pipe is installed using the special kit, code
8093020. For kit assembly instructions,
refer to point 2.8.1.
Protect the intake with the optional acces-
sory, code 8089501 (fig. 10). The air/com-
bustion product divider code 8093020 is
supplied with aspiration diaphragm that
must be engaged, depending on the maxi-
mum head loss allowed, as indicated in fig.
8/a.
Maximum flow resistance must be no
more than 9.0 mm H
2
O in vers. “25 BF” -
9.5 mm H
2
O in vers. “30 BF”.
As the maximum pipe length is determined
by adding up the flow resistance of the
various individual accessories installed,
refer to
Table 1
for calculation.
2.10
POSITIONING OF OUTLET
TERMINALS (fig. 11)
The outlet terminals for forced draught
systems may be located on the outer walls
of the building
Table 2
shows approximate,
non-binding minimum distances to be met
for a building of the type shown in fig. 11.
1) Terminals below a practicable balcony must be located in such a
way that the total path of the smoke from its outlet point from
the terminal to its outlet point from the external perimeter of the
balcony, including the height of possible railings, is not less than
2000 mm.
2) When siting terminals, where materials that may be subject
to the action of the combustion products are present in the
vicinity, e.g., eaves, gutters and downspouts painted or made
of plastic material, projecting timberwork, etc., distances of
not less than 1500 mm must be adopted, unless adequate
shielding is provided to guard these materials.
Fig. 11
Cod. 8089501
Fig. 10
TABLE 2
Siting of terminal
Appliances from 7 to 35 kW
(distances in mm)
A - below openable window
600
B - below ventilation opening
600
C - below eaves
300
D - below balcony (1)
300
E - from adjacent window
400
F - from adjacent ventilation opening
600
G - from horizontal or vertical soil or drain pipes (2)
300
H - from corner of building
300
I - from recess in building
300
L - from ground level or other treadable surface
2500
M - between two terminals set vertically
1500
N - between two terminals set horizontally
1000
O - from a surface facing without
openings or terminals
2000
P - as above but with openings and terminals
3000
