Sime FORMAT DGT HE 25/15 Para El Instalador página 88

2.8 INSTALLATION
OF SEPARATE
DUCTS (ø 80 - ø 60)
The kit with dedicated pipes enables to
separate the exhaust fumes pipes from the
air suction pipes (fig. 9):
– for ø 80 pipes, divider code 8093050 is
provided upon request.
– for ø 60 pipes, divider code 8093060 is
provided upon request.
The maximum overall length, resulting
from the sum of all the suction and
discharge pipes, is determined by the
load losses of the single connected acces-
sories and should not exceed 15 mm H
(ATTENTION: the total length of each pipe
should not exceed 50 m, even if the total
loss is below the maximum applicable
loss.)
See Table 1-1/a for information on the
load losses of single accessories and the
example of fig. 9/a for information on how
to calculate load losses.
TABLE 1 - ACCESSORIES ø 80
Accessories ø 80
Air/smoke divider
90° elbow MF
45° elbow MF
Extension L. 1000 (horizontal)
Extension L. 1000 (vertical)
Wall terminal
Wall coaxial exhaust *
Roof outlet terminal *
* The loss of the accessorie in aspiration concludes the collector code 8091400/01
TABLE 1/a - ACCESSORIES ø 60
Accessories ø 80
Air/smoke divider
90° elbow MF
45° elbow MF
Extension L. 1000 (horizontal)
Extension L. 1000 (vertical)
Wall terminal
Wall coaxial exhaust *
Roof outlet terminal *
*
The loss of the accessorie in aspiration concludes the collector code 8091400/01
Example of allowable installation "25/15" calculation in that the sum of the head losses of the single fittings is less than
9 m horizontal pipe ø 80 x 0, 1 5
9 m horizontal pipe ø 80 x 0, 1 5
n° 2 90° elbows ø 80 x 0,20
n° 2 90° elbows ø 80 x 0,25
n° 1 terminal ø 80
Total head loss
88
4
O.
2
215 120
Total head loss (mm H
Inlet
–
0,20
0, 1 5
0, 1 5
0, 1 5
0, 1 0
0,80
Total head loss (mm H
Inlet
2,50
0,40
0,35
0,40
0,40
0,50
0,80
Inlet
1,35
–
0,40
–
0, 1 0
1,85 +
min. 0,50 m
3
KEY
1 Divider with vent
2 Elbow product discharge
3 Air intake bend
CA Inlet
CS Outlet
NOTICE: For correct boiler func-
tioning, with the 90° suction
elbow, it is necessary to
respect a minimum distance of
the duct of 0.50 m.
O)
2
25/15
Outlet
–
0,25
0, 1 5
0, 1 5
0, 1 5
0,25
0, 1 0
O)
2
25/15
Outlet
0,50
0,90
0,70
0,90
0,60
1,20
0, 1 0
Outlet
–
1,35
–
0,50
0,25
2, 1 0 = 3,95 mm H O
2
2
1
Fig. 9
15 mm H O:
2
Fig. 9/a