Beretta EXCLUSIVE GREEN HE 25 B.S.I. Installer And User Manual page 8

EXCLUSIVE BOILER GREEN HE B.S.I.
Twin outlets (ø 80) - fi g. 12
The split duct can be aimed in the most suitable direction for instal-
lation needs. The combustion-supporting air intake duct must be
connected to the entrance after having removed the closing cap,
attached with three screws, and having attached a suitable adap-
tor.
The fumes outlet duct must be connected to the fumes outlet after
having installed a suitable adaptor.
For the installation process, follow the instructions supplied with
the kit for the specifi c accessory for condensation boilers.
max. linear length
twin duct ø 80 (m)
25 B.S.I. 32+32
35 B.S.I. 40+40
EXCLUSIVE BOILER GREEN HE 25 B.S.I.
60
55
50
45
40
35
30
25
20
15
10
5
0
0 5 10 15 20 25
LENGTH OF THE INTAKE DUCT (m)
10
CONCENTRIC DUCT
FOR FUMES OUTLET/AIR INTAKE
11
8
pressure drop
for each bend (m)
45°
1
30 35 40 45 50 55 60
FOR FUMES OUTLET/AIR INTAKE
12
Rectilinear length means without bends, outlet ends and
connections.
The fumes outlet duct must slope by 1% towards the conden-
sate collector.
The boiler automatically adapts ventilation according to the
type of installation and the length of the duct. Do not obstruct
or narrow the comburent air inlet duct in any way.
For an indication of the maximum lengths of every single
pipe, refer to the graphs.
Using longer ducts causes a loss in the power of the boiler.
90°
1,5
EXCLUSIVE BOILER GREEN HE 35 B.S.I.
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
65 70 75
0 5 10 15
SPLIT DUCTS
20 25 30 35 40 45 50 55 60 65
LENGTH OF THE INTAKE DUCT (m)
FUMES DUCT FOR INTAKE
IN ENVIRONMENTS
13
70 75 80 85 90 95 100
adaptor
Ø 60-80