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AST 14 C 152/00
7.3 POSITIONING OF TERMINALS
For the wall positioning of the discharge terminals of the boiler, in the cases provided for in
DPR n° 551 dated 29/12/99, observe the distances indicated in the following table:
POSITIONING OF THE TERMINALS – FORCED DRAUGHT
(extract from standard UNI 7129)
POSITION OF THE TERMINAL
Under window
A
600
Under ventilation opening
B
600
Under gutter
C
300
Under balcony (1)
D
300
From an adjacent window
E
400
From an adjacent ventilation opening
F
600
From vertical pipes or discharges (2)
G
300
From the corner of a building
H
300
From the concave part of the building
I
300
At ground level
L
2500
Between two terminals, vertically
M
1500
Between two terminals, horizontally
N
1000
From a frontal surface without openings or terminals within a radius
of 3 metres from the smoke outlet
O
2000
The same, but with openings or terminals within a radius of 3 metres
from the smoke outlet
P
3000
Note:
(1) T erminals under a balcony in use must be positioned in such a position that the total distance of the exhaust fumes, from the exit point of the same from
the terminal to the outlet from the external perimeter of the balcony, including the height of any protective railing, is not less than 2000 mm.
(2) In the positioning of the terminals, distances no shorter than 500 mm must be adopted from materials which are at risk from the action of the combustion
products (for example, gutters made of plastic materials, wooden structures, etc.) without adopting adequate shielding precautions in relation to said
materials.
POSITIONING OF THE TERMINALS
