Sime Brava One 40 BF Manuel D'installation Et D'emploi page 16

Split pipe system
The split pipe system is supplied with the combustion air inlet
diaphragm which is to be mounted, after the sections have been
eliminated according to the total load loss which is calculated by
summing the load losses of the inlet ducts to those of the outlet
ducts.
2
1
KEY:
Split pipe system with take-off point
1
2 Inlet diaphragm
Air inlet
3
Smoke outlet
4
Take-off point for smoke analysis
5
Load loss accessory Ø 80 mm
Description
90° curve MF
45° curve MF
Horizontal extension W. 1000
mm
Vertical extension W. 1000 mm
Wall terminal
Condensate recovery Tee
Roof outlet terminal (*)
(*) The losses of the roof outlet terminal at inlet include the
manifold code 8091400.
for the boiler to operate correctly it is necessary that a
NOTE:
minimum distance of 0.50 m of the duct is respected with a 90°
inlet curve.
Example: calculation of the load loss of a Brava One 40 BF boiler.
Accessories Ø 80
Code
mm
Extension W. 1000
8077309
mm (horizontal)
Extension W. 1000
8077309
mm (horizontal)
90° curve 8077410
90° curve 8077410
Wall terminal 8089501
TOTAL
16
3
4
5
Fig. 15
Load loss (mm H
2
Code
Brava One 40 BF
Inlet Outlet
8077410 0,70 1,50
8077411 0,60 1,00
8077309 0,40 0,65
8077309 0,30 0,30
8089501 0,25 2,00
8093300 - 2,20
8091200 4,00 0,40
Load loss (mm H O)
2
Quantity
Inlet Outlet Total
4 4 x 0,40 - 1,60
4 - 4 x 0,65 2,60
2 2 x 0,70 - 1,40
2 - 2 x 1,50 3,00
2 0,25 2,00 2,25
10,85
(installation permitted since the total of the load loss of the
accessories used is less than 15 mmH
With this total load loss, sections 1 to 8 (inclusive) must be
removed from the inlet diaphragm (2).
2
No. of sections to be removed
1 ÷ 2
1 ÷ 4
1 ÷ 5
1 ÷ 6
1 ÷ 7
1 ÷ 8
1 ÷ 10
O) Entire diaphragm
(*) Maximum load loss permitted.
Description
K (mm)
W (mm)
O).
2
Total load loss (mm H
Brava One 40 BF
0 ÷ 2,0
2,0 ÷ 4,0
4,0 ÷ 6,0
6,0 ÷ 8,0
8,0 ÷ 9,0
9,0 ÷ 11,0
11,0 ÷ 13,0
13,0 ÷ 15,0 (*)
L
K
120
Brava One 40 BF
245
450
EN
Fig. 16
O)
2
Fig. 17